Decompression structure for portable fill-type air respirator

Abstract

The present invention relates to a decompression structure for a portable fill-type air respirator, the air respirator supplying oxygen or air to a patient in case of a fire evacuation or emergency, and having improved decompression ability to stably supply air at a pressure comfortable for a user to breathe by decompressing the compressed air again at the time of discharge. Specifically, without a separate decompression structure, air is rapidly supplied using a built-in decompression structure, the high-pressure compressed air being decompressed in multiple stages, and a separate discharge decompression unit being provided for decompression at the time of discharge to stably control air pressure. 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 decompression in multi-stages and decompression at discharge.

Description

Pressure reduction structure for portable rechargeable air breathing apparatus

[0001] The present invention relates to a pressure reduction structure for a portable refillable air breathing apparatus, and more specifically, to a pressure reduction structure for a portable refillable air breathing apparatus that is easy for the user to carry and can provide oxygen or 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, and by further depressurizing the air discharged before the user uses oxygen-containing air, thereby supplying air at a stable pressure to the user.

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

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

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

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

[0009] In addition, supplying oxygen immediately to athletes during or after a game that requires severe physical strength helps them recover quickly to a normal physical condition, and supplying oxygen to help them recover quickly while or after a fire.

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

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

[0012] In order to obtain a portable refillable air breathing apparatus, a container must be developed that can safely withstand high internal pressure and external shocks, and sufficient pressure reduction performance must be integrated within the air breathing apparatus to sufficiently reduce high-pressure air and supply it to the user at a stable pressure, and sufficient air must be supplied for the user to breathe. Only by satisfying these conditions can a compact and refillable air breathing apparatus be obtained. As high-pressure air is filled, the pressure reduction step and pressure reduction ratio to a pressure suitable for breathing must increase, and thus, an air breathing apparatus that supplies stable pressure with minimal pressure change is required.

[0013] The objective of the present invention is to supply high-quality air to a user at a pressure state that allows the user to breathe comfortably and safely by improving the multi-stage pressure reduction capability of high-pressure air.

[0014] Another objective is to provide a container that safely holds high-pressure air, and to make the air breathing apparatus convenient to use by miniaturizing it so that it is easy for the user to carry and can be filled to high pressure.

[0015] Another objective is to achieve miniaturization of the air breathing apparatus by improving the depressurization capability to safely reduce high-pressure air, thereby enabling the filling of a large volume of high-pressure air into a container of a fixed size and supplying stable air pressure and volume, making it easy for the user to carry.

[0016] A pressure reduction structure for a portable refillable air breathing device according to the present invention for solving the above-mentioned problem comprises: a main pressure reduction unit that reduces the pressure of high-pressure air inside a high-pressure container to a pressure within a range usable by the user; and a discharge volume control unit configured such that when an operator presses a discharge volume control unit to supply an appropriate amount of air, the high-pressure air inside the high-pressure container passes through the main pressure reduction unit, is reduced in pressure, and is discharged, and the discharge volume is adjusted in proportion to the operating displacement of pressing the discharge volume control unit, and the air is supplied through a discharge port passage formed inside.

[0017] The present invention has the effect of being miniaturized for easy portability by filling high-pressure air containing oxygen into a container that withstands high internal pressure, and has the effect of supplying very stable oxygen-containing air by depressurizing the high-pressure air through several stages to a stable pressure suitable for the user to breathe and supplying it to the user.

[0018] In addition, since the depressurized air is depressurized again when discharged to supply air with stable pressure, it provides high-pressure air containing oxygen in a state where the user can breathe comfortably, thereby having the effect of providing a highly efficient high-pressure air breathing device to the user.

[0019] In addition, since high-pressure air can be safely depressurized, a large volume of air can be filled into a container of a fixed size, and a stable pressure air and a sufficient amount of air for breathing can be supplied, which has the effect of enabling the miniaturization of the air breathing device so that it is easy for the user to carry.

[0020] FIG. 1 is an exploded perspective view showing the overall configuration of a portable refillable air breathing apparatus for life rescue purposes with a built-in multi-stage depressurization structure of the present invention.

[0021] FIG. 2 is a cross-sectional view showing the entire interior and the structure with the interior and exterior reinforced according to the present invention.

[0022] FIG. 3 shows the entire interior of the present invention and a cross-sectional view with the lid closed,

[0023] FIG. 4 is a cross-sectional view in which the discharge volume control unit (50) is not operated,

[0024] FIG. 5 is a cross-sectional view showing the path in which air is discharged in the direction of the arrow when the discharge volume control unit (50) presses the nozzle member (120).

[0025] FIG. 6 is a cross-sectional view showing the path in which air is discharged in the direction of the arrow when the discharge volume control part (50) is fully opened by pressing the nozzle member (120).

[0026] FIG. 7 is a cross-sectional view showing the internal configuration of the main pressure reduction unit (90) by the discharge volume control unit (50) pressing the nozzle member (120).

[0027] FIG. 8 is a cross-sectional view illustrating the first pressure reduction section of the main pressure reduction unit (90),

[0028] FIG. 9 is a cross-sectional view illustrating the second pressure reduction section of the main pressure reduction unit (90).

[0029] FIG. 10 is a cross-sectional view illustrating the third pressure reduction section of the main pressure reduction unit (90).

[0030] FIG. 11 is a cross-sectional view illustrating the fourth pressure reduction section of the main pressure reduction unit (90).

[0031] FIG. 12 is a cross-sectional view illustrating the fifth pressure reduction section of the main pressure reduction unit (90).

[0032] FIG. 13 is a cross-sectional view illustrating the sixth pressure reduction section of the main pressure reduction unit (90).

[0033] FIG. 14 is a cross-sectional view of a combined state illustrating an interlocking structure configured to withstand high internal pressure formed between a bottom filling cover part (60) and a high-pressure container (10).

[0034] FIG. 15 is a cross-sectional view of a combined state illustrating an interlocking structure configured to withstand high internal pressure formed between the bottom filling cover portion (60) and the upper cap portion (40).

[0035] FIG. 16 is a cross-sectional view illustrating the contact relationship between the 6th pressure reduction section of the main pressure reduction section (90) and the discharge amount control section (50).

[0036] FIG. 17 is a cross-sectional view illustrating the discharge pressure reduction section 1 (470) and discharge pressure reduction section 2 (480) of the discharge pressure reduction section (80).

[0037] FIG. 18 is an exploded perspective view showing the configuration of the upper discharge pressure reduction part (810) and the lower discharge pressure reduction part (830) of the discharge pressure reduction part (80) of the present invention.

[0038] FIG. 19 is an exploded perspective view showing the configuration of the discharge pressure reduction upper part (810) and the discharge pressure reduction lower part (830) of the discharge pressure reduction unit (80) of the present invention from a different perspective.

[0039] FIG. 20 is a cross-sectional view of a combined state illustrating an interlocking structure configured to withstand high internal pressure formed between a bottom filling cover part (60) and a high-pressure container (10).

[0040] FIG. 21 is a cross-sectional view of the combined state illustrating an interlocking structure configured to withstand high internal pressure formed between the bottom filling cover part (60) and the upper cap part (40).

[0041] Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the attached drawings.

[0042] The present invention relates to a pressure reduction structure for a portable and refillable air breathing device, which is easy to carry and refillable, wherein air containing oxygen necessary for breathing is filled at high pressure in a cylindrical high-pressure container (10), depressurized in multiple stages, and depressurized again before air is supplied to a user to provide air that is suitable for breathing, and supplied in a sufficient amount of air to supply air to a person who has difficulty breathing on their own or who requires emergency care due to hypoxia.

[0043] The air breathing device of the present invention comprises a cylindrical high-pressure container (10), a bottom filling cover part (60), an upper cap part (40), a main pressure reduction part (90), a discharge pressure reduction part (80), a pressure display part (70), a discharge amount control part (50), a push button cover part (30), and a lid (31). The present invention aims to provide a high-pressure air breathing device with improved pressure reduction capability by providing a discharge pressure reduction part (80) that performs pressure reduction again before supplying to the user after passing through a pressure reduction structure that performs pressure reduction in multiple stages, thereby reducing the high-pressure air to a pressure suitable for breathing and supplying it.

[0044] The ability to depressurize high-pressure air is an essential technology for obtaining a lightweight, portable, and stable air breathing device in a method of filling a container with oxygen-containing air.

[0045] The method of depressurizing high-pressure air involves moving high-pressure air through a passage with a narrow cross-sectional area into a space with a wide cross-sectional area. Since increasing the depressurization ratio can result in uneven and unstable fluctuations in the depressurized air, it is very unsafe to use such air with unstable pressure for breathing. Therefore, it is desirable to design an air breathing apparatus by gradually lowering the pressure through several stages.

[0046] The bottom filling cover (60) is assembled at the bottom of the high-pressure container (10), and the bottom is sealed with a cover to safely contain high-pressure air filled in the interior (10a) of the high-pressure container (10), and includes a configuration for filling high-pressure air containing oxygen at high pressure from the bottom into the interior (10a) of the high-pressure container (10).

[0047] The upper cap portion (40) is assembled on the upper part of the high-pressure container (10) and performs the role of sealing the upper part with the upper cap portion (40) to safely contain high-pressure air filled in the interior (10a) of the high-pressure container (10) and organically connecting with other components.

[0048] Inside the upper cap portion (40), a main pressure reducing portion (90) and a discharge pressure reducing portion (80) are housed, and a pressure display portion (70) is coupled.

[0049] The main pressure reduction unit (90) reduces the pressure of the high-pressure air inside (10a) of the high-pressure container (10) to a pressure range that the user can use, and the discharge pressure reduction unit (80) further reduces the pressure of the air discharged through the main pressure reduction unit (90) to a pressure suitable for the user to use, and the pressure display unit (70) displays the pressure of the high-pressure air filled inside the high-pressure container (10) to inform the user of how much extra air pressure remains, thereby helping the user make a judgment on the situation.

[0050] On the upper cap portion (40) and the upper discharge pressure reduction portion (80), a discharge amount control portion (50), a push button cover portion (30), and a lid (31) are formed.

[0051] The discharge volume control unit (50) is configured such that when an operator presses a push button (512) with a finger to supply an appropriate amount of air, the high-pressure air inside (10a) of the high-pressure container (10) passes through a main pressure reduction unit (90), is reduced in pressure and discharged, and passes through a discharge pressure reduction unit (80) that is reduced in pressure again, and supplies air while adjusting the discharge volume in proportion to the operating displacement of the operator pressing the push button (512) with a finger. The push button cover unit (30) is configured to surround the push button (512) to protect the discharge volume control unit (50) and to support and guide the push button (512), and the lid (31) is configured to cover the push button cover unit (30) and to protect the discharge volume control unit (50) from contamination by foreign substances.

[0052] The elements constituting the above air breathing device have been described, and in this invention, a multi-stage pressure reduction structure for a portable refillable air breathing device mounted inside the air breathing device is described.

[0053] The pressure reduction structure for a portable inflatable air breathing apparatus is the most critical component of the apparatus, and pressure reduction performance must be provided to stably supply high-pressure air at a pressure suitable for the user or patient to breathe. High pressure reduction performance allows for a larger volume of air to be filled into a container of a given capacity and enables the supply of high air pressure by reducing it, thereby making it possible to miniaturize and lighten the weight.

[0054] In addition, the decompression steps must be performed multiple times so that progressive decompression, rather than rapid decompression, is achieved, allowing the user or patient to receive a sufficient and stable supply of air.

[0055] In summary, the present invention relates to a structure in which high-pressure air breathing apparatus, in which oxygen-containing air is filled at high pressure, is subjected to depressurization to a pressure suitable for breathing, and a structure in which the depressurization of the discharged air is performed again when oxygen-containing air for use in the high-pressure air breathing apparatus is depressurized and discharged, thereby supplying safe air to the user. The invention is characterized by comprising a main depressurization unit (90) that depressurizes the high-pressure air inside (10a) of the high-pressure container (10) to reduce the air pressure to a pressure within a range that the user can use, and a discharge volume control unit (50) configured such that when an operator presses the discharge volume control unit (50) to supply an appropriate amount of air, the high-pressure air inside (10a) of the high-pressure container (10) passes through the main depressurization unit (90), is depressurized and discharged, and the discharge volume is adjusted in proportion to the operating displacement of pressing the discharge volume control unit (50), and the air is supplied through a discharge port passage formed inside.

[0056] The present invention describes the components necessary for the air breathing device to operate properly. The high-pressure air breathing device comprises: a cylindrical high-pressure container (10) that stores air containing oxygen for breathing at high pressure; a bottom filling cover part (60) assembled at the bottom of the high-pressure container (10), which seals the bottom with a cover to safely contain the high-pressure air filled inside the high-pressure container (10), and fills the high-pressure air from the bottom into the high-pressure container (10); and an upper cap part (40) assembled at the top of the high-pressure container (10), which seals the top with a cap to safely contain the high-pressure air filled inside the high-pressure container (10), and supplies the high-pressure air from inside the high-pressure container (10) to a discharge volume control part (50). Inside the upper cap part (40), the high-pressure air inside (10a) of the high-pressure container (10) is depressurized to reduce the air pressure to a pressure within a range that the user can use. The device is characterized by comprising a main pressure reduction unit (90) that reduces pressure in multiple stages, a discharge pressure reduction unit (80) that further reduces the pressure of the air discharged after being reduced through the main pressure reduction unit (90) to a pressure suitable for use by the user, and a pressure display unit (70) that displays the pressure of the high-pressure air filled inside the high-pressure container (10). The upper cap unit (40) and the upper part of the discharge pressure reduction unit (80) are configured to include a discharge amount control unit (50) configured such that when an operator presses a push button (512) with a finger to supply an appropriate amount of air, the high-pressure air inside (10a) of the high-pressure container (10) passes through the main pressure reduction unit (90), is reduced and discharged, and passes through the discharge pressure reduction unit (80) which is further reduced, and the discharge amount is adjusted and air is supplied in proportion to the operating displacement of the operator pressing the push button (512) with a finger.

[0057] The components required for using the air breathing device of the present invention include, in the present invention, an upper cap portion (40) assembled to supply high-pressure air from the inside (10a) of the high-pressure container (10) to a discharge volume control portion (50) by sealing the top with a cap so as to safely contain high-pressure air filled in the inside (10a) of the high-pressure container (10), a pressure display portion (70) configured to indicate the pressure of the high-pressure air filled in the inside (10a) of the high-pressure container (10), a push button cover portion (30) configured to protect the discharge volume control portion (50) and support and guide a push button (512), and a lid (31) configured to cover the push button cover portion (30) and protect the discharge volume control portion (50) from contamination by foreign substances.

[0058] With reference to FIG. 2, the airtightness of the upper part of the high-pressure container (10) is maintained by forming a female screw (14) on the upper part of the container on the upper inner surface of the high-pressure container (10) and coupling with a male screw (422) on the upper cap part (40), and above where the male screw (422) on the upper cap part is formed, an upper sealing ring (15a) of the upper cap container is fitted into the upper sealing ring groove (15ah) of the upper cap part (40), which is an outer groove of the upper cap part (40), and below where the male screw (422) on the upper cap part is formed, an upper sealing ring (15b) of the upper cap container is fitted into the lower sealing ring groove (15bh) of the upper cap part (40), which is an outer groove of the upper cap part (40), thereby maintaining airtightness. The airtightness of the lower part of the high-pressure container (10) is maintained by forming a female screw (15) on the lower part of the container on the lower inner surface of the high-pressure container (10) and coupling with the outer surface of the bottom filling cover part (60). A bottom filling cover coupling screw (604) is coupled, 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 an 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 an outer groove of the bottom filling cover part (60), thereby maintaining airtightness. The reinforcing means of the high-pressure container (10) is formed by contacting the inner wall surface of the inner central part so as to protrude towards the center, and is configured to protrude in a circular shape into the interior of the high-pressure 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 a reinforcing flange (12) having a hole formed in the center to allow the high-pressure filled air to communicate is formed, and one or of the high-pressure It is characterized by having a reinforcing means that improves durability by reinforcing the high-pressure container (10) to respond to the increasing pressure as the pressure of the filled air increases, and by being composed of a homogeneous material in the shape of a metal rod to withstand high-pressure air pressure.

[0059] 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) of the upper cap container, 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 upper sealing ring groove (15bh) of the upper cap container, which is the outer groove of the upper cap part (40), thereby maintaining airtightness.

[0060] 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 (604) formed on the outer surface of the bottom filling cover part (60). Above the bottom cover coupling screw (604), a container bottom upper sealing ring (15c) is fitted into the container bottom upper sealing ring groove (15ch), which is the outer groove of the bottom filling cover part (60), and below the bottom cover coupling screw (604), a container bottom lower sealing ring (15d) is fitted into the container bottom lower sealing ring groove (15dh), which is the outer groove of the bottom filling cover part (60), thereby maintaining airtightness.

[0061] Even when the air breathing device of the present invention is heated by flames at a fire scene, the O-rings incorporated and coupled within the high-pressure container (10), such as the upper cap container upper sealing ring (15a), upper cap container lower sealing ring (15b), container bottom upper sealing ring (15c), and container bottom lower sealing ring (15d), do not melt due to the heat, causing the internal high-pressure air to leak out through the screw threads and thus preventing the high-pressure container (10) from exploding.

[0062] The pressure of the compressed air used in the high-pressure container in the present invention is 250 to 300 ba, and the compressed air is injected into the container and stored at a pressure 250 to 300 times that of atmospheric pressure. Therefore, the high-pressure container (10) must be structured to be safe despite external influences such as external shock or temperature rise, and pressures 250 to 300 times higher.

[0063] 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 inside (10a) 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.

[0064] 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.

[0065] With this high-pressure container (10), high-pressure air containing oxygen can be injected, so the size of the air breathing device can be reduced relative to the amount of air required, thereby providing a portable air breathing device that is lightweight, safe, and has an increased usage time.

[0066] 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.

[0067] 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).

[0068] In order to fill the high-pressure container (10) with air containing high-pressure compressed oxygen, the high-pressure container (10) must be configured to withstand high-pressure air sufficiently and to be safe even if external impact occurs. This is to explain the configuration for reinforcing to withstand internal pressure. 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) so that the high-pressure container (10) is reinforced to ensure safety even under increasing pressure, thereby improving durability. Furthermore, 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), the container of the high-pressure container (10) Since cutting is performed to form the upper female screw (14) and the lower female screw (15) of the container, the high-pressure container (10) becomes 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 container (10).

[0069] 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.

[0070] The interlocking structure is designed to prevent the screw-connected structure from expanding and the O-rings maintaining the airtight seal from being pushed out and bursting as the high-pressure container (10) swells due to internal pressure, by having the bottom filling cover part (60) and the upper cap part (40) interlock and hold the screw-connected portion of the high-pressure container (10) so that the connected screws maintain the connected state. In the present invention, the bottom filling cover part (60) is assembled by screw-connecting the container bottom female screw (15) formed at the bottom of the high-pressure container (10) and the bottom filling cover connecting screw (604) formed on the outer periphery of the bottom filling cover part (60). The structure in which the bottom filling cover part (60) interlocks with the lower edge of the high-pressure container (10) to withstand the high internal pressure (10ap) of the high-pressure container is the 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 (608) of the bottom filling cover part (60), 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 (609) of the bottom filling cover part (60), and the container bottom coupling projection (18) formed on the lower edge of the high-pressure container (10) is coupled with the bottom filling cover coupling projection groove (608) of the bottom filling cover part (60), so that the bottom filling cover restraining projection (607) restrains the container bottom coupling projection (18) to withstand the high-pressure internal pressure (10ap) of the high-pressure container in order to prevent the high-pressure container (10) from swelling up and exploding due to the high-pressure internal pressure (10ap).

[0071] In the present invention, an upper cap portion (40) is assembled by screw coupling with a female screw (14) formed on the upper part of the high-pressure container (10) and a male screw (422) formed on the outer periphery of the upper cap portion (40), and the structure in which the upper cap portion (40) engages with the upper edge of the high-pressure container (10ap) to withstand the internal pressure (10ap) of the high-pressure container is such that a container upper coupling projection (16) protruding upward from the upper edge of the high-pressure container (10) engages with the upper cap portion coupling projection groove (412) of the upper cap portion (40), and a container upper joining surface (17) formed on the upper edge of the high-pressure container (10) contacts the upper cap portion joining surface (414) of the upper cap portion (40), and the container upper coupling projection (16) formed on the upper edge of the high-pressure container (10) is the upper cap portion of the upper cap portion (40). The upper cap restraining protrusion (413) is configured to restrain the upper cap connecting protrusion (16) to withstand the high pressure internal pressure (10ap) of the high pressure container, thereby preventing the high pressure container (10) from swelling and exploding due to the high pressure internal pressure (10ap) of the high pressure container by combining with the connecting protrusion groove (412).

[0072] A structure has been described in which, due to the unique connection between the upper cap (40) and the high-pressure container (10), high-pressure air containing oxygen is injected at a high pressure, and the container is not deformed due to internal pressure and can be safely stored. The upper cap (40) is equipped with a main pressure reduction unit (90), a discharge pressure reduction unit (80), and a pressure display unit (70).

[0073] In the present invention, the upper cap portion (40) is configured to be coupled to the upper part of a cylindrical high-pressure container (10) to withstand the pressure of high-pressure air, and the upper cap portion (40) to be coupled is equipped with the main pressure reducing portion (90), the discharge pressure reducing portion (80), and the pressure display portion (70). The lower part of the main pressure reducing portion (90) is in communication with the interior (10a) of the high-pressure container (10), and the upper part of the main pressure reducing portion (90) is in contact with and in communication with the discharge pressure reducing portion (80). The discharge pressure reducing portion (80) is configured to press the discharge pressure reducing portion (80) according to the up-and-down movement of the discharge amount control portion (50), and to press the main pressure reducing portion (90) which is in contact with and linked with the discharge pressure reducing portion (80) so that air is discharged. The pressure display portion (70) is formed to be in communication with the interior (10a) of the high-pressure container (10). It is characterized by displaying the pressure on the pressure display surface (710) the pressure transmitted through the pressure gauge flow hole (722) and connected through the pressure gauge coupling hole (47) of the cap part (40).

[0074] In the present invention, the discharge amount control unit (50) is characterized by being composed of a push block (51), a push button (512), a push block guide (53), and a push button cover unit (30), which is configured to guide the push button (512) to the push block guide (53) and move the push block (51) up and down to press the nozzle member (120) of the main pressure reducing member (100) up and down so that air containing oxygen is supplied to the user through the air discharge hole (519).

[0075] The discharge volume control unit (50) of the present invention plays the role of increasing or decreasing the discharge volume of air as the discharge volume control unit (50) is displaced up and down, and the discharge pressure reduction unit (80) is normally connected to an external space at a pressure equal to atmospheric pressure, but when high-pressure air is discharged according to the up and down displacement of the discharge volume control unit (50), it passes through a section where a pressure reduction phenomenon occurs in the main pressure reduction unit (90) and then a section that generates pressure reduction again, so that air containing oxygen passes through the discharge pressure reduction unit (80) and the discharge volume control unit (50) and is supplied to the user through the air discharge hole (519).

[0076] To explain the operational relationship between the push button (512) of the discharge volume control unit (50) of the present invention and the main pressure reduction unit (90), in the present invention, when the push button (512) of the discharge volume control unit (50) is not operated and is in a standby state, the first pressure reduction section (410) to the third pressure reduction section (430) is equal to the internal pressure of the high-pressure container (10), and the fourth pressure reduction section (440) to the sixth pressure reduction section (460), which is the section behind the locked sealing projection (132) and the sealing member 2 (118), is equal to the atmospheric pressure. When the push button (512) of the discharge volume control unit (50) is operated and is in a usage state, the pressure is gradually reduced from the internal pressure of the high-pressure container (10) to the first pressure reduction section (410) to the sixth pressure reduction section (460), and the open sealing projection (132) and It is characterized by being supplied to the user by passing through the sealing member 2 (118).

[0077] This explains the interaction relationship between the discharge volume control unit (50) and the main pressure reduction unit (90) of the present invention. In the present invention, the main pressure reduction unit (90) is configured to withstand the pressure of high-pressure air by being coupled to the upper part of a cylindrical high-pressure container (10), and is provided with a discharge pressure reduction unit (80) and a pressure display unit (70) inside the cap unit (40) which is sealed and coupled, and is coupled to the main pressure reduction member installation space (102). The lower part of the main pressure reduction unit (90) is in communication with the interior (10a) of the high-pressure container (10) and is in contact with high-pressure air containing oxygen, and the upper part is in contact with and communicates with the discharge pressure reduction unit (80). The discharge pressure reduction unit (80) moves up and down in conjunction with the up and down movement of the discharge volume control unit (50) push button (512), and the main pressure reduction unit (80) that is in contact with and interacts with the discharge pressure reduction unit (80) The nozzle member (120) of the pressure reduction unit (90) is configured to move up and down in conjunction with the pressure reduction unit (90) so that air is discharged, discharge is reduced, or is submerged, and the pressure reduction of the air inside the high-pressure container (10) (10a) containing high-pressure oxygen is performed in multiple stages.

[0078] The interaction relationship between the discharge volume control unit (50) and the main pressure reduction unit (90) of the present invention is explained in more detail. In the present invention, the main pressure reduction unit (90) is composed of a nozzle guide member (110), a nozzle member (120), a movable nozzle member (130), and a locking pressure control pressure reduction member (140). A sealing member 1 (116) is inserted into the hollow nozzle guide (112), which is an external protrusion of the nozzle guide member (110), and coupled to the groove. A sealing member 2 (118) is coupled to the groove inside the nozzle guide member (110). A nozzle member (120) is integrally formed at the tip of the movable nozzle member (130), and the nozzle member (120) is inserted into the interior of the nozzle guide member (110) so that it can move up and down, and the locking pressure control pressure reduction member (140) is coupled while surrounding the nozzle guide member (110). It is configured to be coupled to the lower part of the discharge pressure reduction unit (80) which is coupled to the discharge volume control unit (50) according to the up-and-down movement of the push button (512), and comprises a nozzle member (120) coupled to the upper part of a movable nozzle member (130) capable of up-and-down movement, a nozzle guide member (110) that guides the movable nozzle member (130), a movable nozzle member (130) coupled to be able to move up-and-down according to the control of the discharge volume control unit (50) inside the nozzle guide member (110), and a locking pressure control pressure reduction member (140) coupled to the nozzle guide member (110), which controls the locking pressure by the rotation of a screw, restrains and combines the nozzle guide member (110) to reduce the pressure of high-pressure air containing oxygen, and comprises the nozzle member (120) and the movable nozzle member (130) in the internal space formed by the nozzle guide member (110) and the pressure control pressure reduction member (140) discharge volume It is characterized by being movably embedded according to the control of the control unit (50), and configured so that the amount of air discharged is proportional to the vertical movement distance of the discharge amount control unit (50).

[0079] The above main pressure reduction unit (90) includes a scope-oriented meaning, and the main pressure reduction member (100) means that each component is gathered together; substantially, the above main pressure reduction unit (90) can be seen as meaning the main pressure reduction member (100).

[0080] In the present invention, the main pressure reduction section (90) refers to the main pressure reduction member (100), and the main pressure reduction member (100) is composed of a plurality of pressure reduction sections (400), the first pressure reduction section (410) is composed of a first gap section (310) and a first pressure reduction space section (210), the second pressure reduction section (420) is composed of a second gap section (320) and a second pressure reduction space section (220), the third pressure reduction section (430) is composed of a third gap section (330) and a third pressure reduction space section (230), the fourth pressure reduction section (440) is composed of a fourth gap section (340) and a fourth pressure reduction space section (240), and the fifth pressure reduction section (450) is composed of a fifth gap section (350) and a fifth pressure reduction space section (250), so that the sixth The pressure reduction section (460) is composed of a sixth gap section (360) and a sixth pressure reduction space section (260), and is composed of an air supply section (50) that supplies reduced air to the user so that the pressure of the high-pressure filled air inside the high-pressure container (10) (10a) is gradually reduced in sequential sections to allow the user to breathe comfortably. Each of the pressure reduction sections is characterized by the ability to perform pressure reduction by omitting the space section of the corresponding section.

[0081] 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.

[0082] In the principle of depressurization, the pressure of a fluid drops as it moves from a narrow gap to a wider area, and the narrower the gap, the greater the degree of depressurization.

[0083] Therefore, each of the above-mentioned depressurization sections can change the depressurization rate by changing the ratio of the cross-sectional area of ​​the space portion of the section where high-pressure air flows to the cross-sectional area of ​​the gap portion.

[0084] The main pressure reducing member (100), which is the main pressure reducing section (90) above, includes several stages of pressure reduction sections, and pressure reduction proceeds continuously in each section, and is a single stage section in which pressure is reduced sequentially and the flow rate is not reduced so as to proceed with gradual pressure reduction. In the present invention, the first pressure reduction section is a section in which high-pressure filled air inside (10a) of the high-pressure container (10) is first reduced, and pressure reduction proceeds as high-pressure filled air inside (10a) of the high-pressure container (10) flows through a narrow space, the first gap section (310), and is composed of the first gap section (310) and the first pressure reduction space section (210), and the first gap section (310) is formed inside the cylindrical main pressure reducing member installation space (102) inside the upper cap section (40) and the locking pressure control pressure reducing member (140). It is configured so that high-pressure air flows through the gap between the threads and grooves formed by the gap female screw (142) and the gap female screw (144) by combining with the gap female screw (144) formed on the outer side, and the first pressure reduction space (210) is configured such that the gap female screw (142) is omitted by passing through the gap female screw (142) formed inside the cylindrical main pressure reduction member installation space (102) inside the upper cap part (40) at the point where the path of the first gap part (310) ends, and the gap female screw (144) is omitted by passing through the gap female screw (144) formed on the outer side of the locking pressure control pressure reduction member (140), and the gap between the outer surface of the nozzle guide member (110) and the inner wall of the main pressure reduction member (100) installation space inside the pressure reduction valve block (20) is sealed through the sealing member 1 (116). It is characterized by being composed of a section in which the pressure is reduced by passing through the first gap section (310) inside the high-pressure vessel (10) (10a) and reaching the first pressure reduction section (210), which is a space having an expanded cross-sectional area.

[0085] In the present invention, the second pressure reduction section is a section in which the pressure reduced after passing through the first pressure reduction section is further reduced. High-pressure filled air inside (10a) of the high-pressure container (10) flows through a narrow space, and the air that has undergone pressure reduction reaches the first pressure reduction space (210). From the first pressure reduction space (210), it passes through the second gap section (320) and reaches the second pressure reduction space (220), which is an expanded space, and pressure reduction is performed therein. The second gap section (320) is composed of the second gap section (320) and the second pressure reduction space (220). The second gap section (320) forms a gap penetration hole (322) that penetrates from the outer surface to the inner surface of the locking pressure control pressure reduction member (140) forming the first pressure reduction space (210) to form a gap, and the outer surface of the nozzle guide member (110) and the inner surface of the locking pressure control pressure reduction member (140) form The second pressure reduction space (220) is formed with a connecting gap (324) and is composed of an internal space (222) in which the interior 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), a connecting space 2 (226) in which the movable nozzle member (130) is connected to the nozzle guide member (110) and the remaining space, and a connecting space 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 an expanded space.

[0086] In the present invention, the third pressure reduction section is a section in which pressure is further reduced so that the user can conveniently use the pressure reduced after passing through the second pressure reduction section. High-pressure filled air inside (10a) of the high-pressure container (10) passes through a narrow space and reaches the second pressure reduction space (220), which is an expanded space, where pressure reduction is performed. From the second pressure reduction space (220), pressure reduction is performed by passing through the third gap section (330) and reaching the third pressure reduction space (230), which is an expanded space. The third pressure reduction space (220) is composed of the second pressure reduction space (220), the third gap section (330), and the third pressure reduction space (230). The third gap section (330) is 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 the high-pressure air present in the second pressure reduction space (220) passes. The pressure reduction space (230) is composed of a space formed between the outer circumferential cutting surface (136) formed on the central outer circumferential surface of the movable nozzle member (130) and the inner circumferential surface of the nozzle guide member (110), where the path of the third gap section (330) ends and the space expands, and is characterized by being composed of a section in which pressure reduction proceeds as it passes through the third gap section (330) from the second pressure reduction space (220) and reaches the third pressure reduction space (230), which is an expanded space.

[0087] In the present invention, the fourth pressure reduction section is a section in which further pressure reduction is performed to make it convenient for the user to use the pressure reduced after passing through the third pressure reduction section. High-pressure filled air inside (10a) of the high-pressure container (10) passes through a narrow space and reaches the third pressure reduction space (230), which is an expanded space, where pressure reduction is performed. From the third pressure reduction space (230), pressure reduction is performed as the air passes through the fourth gap section (340) and reaches the fourth pressure reduction space (240), which is an expanded space. The fourth pressure reduction space (240) is composed of the third pressure reduction space (230), the fourth gap section (340), and the fourth pressure reduction space (240). The fourth gap section (340) consists 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 existing in the third pressure reduction space (230) passes, and a nozzle guide A circular sealing member 2 (118) formed at the front end of the inner hole of the member (110) and a circular sealing projection (132) formed on the front surface of the movable nozzle member (130) are in close contact with each other to maintain airtightness of the high-pressure filled air inside (10a) of the high-pressure container (10), and an upper surface gap (345) formed between the lower surface of the sealing member 2 (118) and the upper surface (139) of the movable nozzle member (130) are formed. When the nozzle head (126) of the nozzle member (120) is pressed downward by the discharge volume control part (50), the gap between the sealing member 2 (118) and the sealing projection (132) increases according to the distance of pressing, so the discharged air increases and moves upward, and the gap between the sealing member 2 (118) and the sealing projection (132) decreases. As the discharged air decreases and the compression disappears, the gap between the sealing member 2 (118) and the sealing projection (132) disappears, so the discharged air is formed to be submerged, and the fourth pressure reduction space (240) is composed of a space 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), where the path of the fourth gap section (340) ends and the space expands.It is characterized by being composed of a section in which pressure reduction proceeds as it passes through the third pressure reduction space (230), the fourth gap section (340), and reaches the expanded space, the fourth pressure reduction space (240).

[0088] In the present invention, the fifth pressure reduction section is a section in which further pressure reduction is performed to make it convenient for the user to use the pressure reduced after passing through the fourth pressure reduction section. High-pressure filled air inside (10a) of the high-pressure container (10) passes through a narrow space and reaches the fourth pressure reduction space (240), which is an expanded space, where pressure reduction is performed. From the fourth pressure reduction space (240), pressure reduction is performed as the air passes through the fifth gap section (350) and reaches the fifth pressure reduction space (250), which is an expanded space. The fifth pressure reduction space (250) is composed of the fourth pressure reduction space (240), the fifth gap section (350), and the fifth pressure reduction space (250). The fifth gap section (350) is formed as a single body at the tip of the movable nozzle member (130) through which the high-pressure air present in the fourth pressure reduction space (240) passes, and the nozzle tapered stem (124) of the nozzle member (120) and the nozzle guide The nozzle tapered stem groove (114) formed by the inner surface of the hollow nozzle guide (112) of the member (110) and the tapered stem gap (346) formed therein are formed, and when the nozzle head (126) of the nozzle member (120) is pressed downward by the discharge amount control part (50), the gap of the tapered stem gap (346) expands according to the distance of pressing, increasing the discharged air, and when it moves upward, the gap of the tapered stem gap (346) contracts, decreasing the discharged air, and when the pressing disappears, the gap between the sealing member 2 (118) and the sealing projection (132) disappears, so the discharged air is submerged, and the fifth pressure reduction space part (250) is formed along the circumference of the nozzle machined 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.

[0089] In the present invention, the sixth pressure reduction section is a section in which pressure is further reduced so that the user can conveniently use the pressure reduced after passing through the fifth pressure reduction section. High-pressure filled air inside (10a) of the high-pressure container (10) passes through a narrow space and reaches the fifth pressure reduction space (250), which is an expanded space, and pressure reduction is performed. From the fifth pressure reduction space (250), pressure reduction is performed as the air passes through the sixth gap section (360) and reaches the sixth pressure reduction space (260), which is an expanded space. The sixth pressure reduction space (250) is composed of the fifth pressure reduction space (250), the sixth gap section (360), and the sixth pressure reduction space (260). The sixth gap section (360) is 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 existing in the fifth pressure reduction space (250) passes. When the nozzle head (126) of the nozzle member (120) is pressed downward by the discharge volume control part (50), the gap between the tapered stem gap (346) expands according to the distance of pressing, increasing the discharged air, and when it moves upward, the gap between the tapered stem gap (346) contracts, decreasing the discharged air, and when the pressing disappears, the gap between the sealing member 2 (118) and the sealing projection (132) disappears, so the discharged air is formed to be submerged, and the sixth pressure reduction space part (260) is formed such that the path of the sixth gap part (360) ends and the space expands, the nozzle head (126), which is the tip of the nozzle member (120), protrudes, and the lower surface (435) of the discharge pressure reduction member coupling hole (433), which is a circular installation space within the upper cap part (40) where the discharge pressure reduction part (80) is installed, and the discharge It is characterized by being composed of a space formed by the lower surface (831) of the discharge pressure reduction lower piece, which is the lower surface of the pressure reduction member (800), and a section in which pressure reduction proceeds by passing through the 6th gap section (360) from the 5th pressure reduction space section (250) and reaching the 6th pressure reduction space section (260), which is an expanded space.

[0090] In the present invention, each pressure increase / decrease section related to the main pressure reduction member (100) of the main pressure reduction unit (90) has been described. The discharge volume control unit (50) is configured to perform the role of supplying air for use while pressure reduction is being performed. The discharge volume control unit (50) moves to control the amount of air discharged, and the interaction relationship of the detailed components of the discharge volume control unit (50) that discharge air, namely the push block (51), push button (512), push block guide (53), and push button cover unit (30), is described. The push block (51) of the discharge volume control unit (50) is composed of a push button (512), a push block body (52), a push block guide unit (518), a push block push rod (516), and a push block tip (514). The push block (51) is configured on the upper part of the push block (51), which is integrally formed with the push block body (52), and causes the push block (51) to move up and down as it is pressed by hand or pressure is removed. A push block body (52) having a discharge port coupling hole (26) formed horizontally on one side of a button (512) and a push block (51), and a discharge passage (27) formed vertically in communication, and a discharge passage (517) formed inside that is connected to a push block guide part (518), a push block push rod (516), and a push block tip (514); a push block guide part (518) whose outer surface is connected to guide the push block (51) by being connected to the inside of a push block guide groove (536); a push block push rod (516) which is integrally formed at the bottom of the push block guide part (518), is connected to be movable up and down by passing through a push block push rod penetration hole (538) inside the push block guide groove (536), and has a discharge pressure reducing member (600) connected to the push block tip (514) at the bottom; and contacting the discharge pressure reducing member (600). It is characterized by being composed of a push block tip (514) that pushes the discharge pressure reducing member (600) up and down according to the movement of the push button (512).

[0091] In the present invention, the push button (512) of the discharge amount control unit (50) is formed with an arc-shaped groove on the upper side and straight irregularities (513) formed to prevent fingers from slipping and to facilitate pressing the button, and a push button coupling hole (392) for coupling the push button (512) is drilled on the upper side of the push button cover (39), and push button stopper protrusions (394) are installed on both sides downward from the push button coupling hole (392) and corresponding button side protrusions (515) formed on both sides of the push button (512). When the push button (512) is pressed with a finger, the push block (51) is pressed, causing high-pressure air to be discharged, and when the pressing force is removed, the push block (51) moves upward due to the internal pressure of the high-pressure container (10), and the corresponding button side protrusions (515) formed on both sides of the push button (512) are pushed. It is characterized by being configured so that the air containing oxygen being discharged is locked by being caught on the push button stopper projection (394) of the cover (39).

[0092] In the present invention, the push block guide (53) of the discharge amount control unit (50) comprises a push block guide groove (536) in which the outer surface of the push block guide (518) contacts and is coupled to guide the push block (51), a push block push rod penetration hole (538) in which the push block push rod (516) passes through and is coupled inside the push block guide groove (536), a push block push rod circular guide (539) formed extending from the lower part of the push block push rod penetration hole (538) to guide the push block push rod (516) when it moves up and down, a push block guide fixing bolt hole (532) for fixing the push block guide (53) to the upper part of the upper cap unit (40) with a bolt, a guide coupling groove (534) of the push block guide (53) in which a coupling projection (36) formed on the lower part of the push button cover (39) is coupled to a groove formed on both side corners of the guide fixing bolt hole (532), and an upper It is characterized by being composed of a coupling projection groove (426) of the cap portion (40) and a pressure indicator member coupling groove (535) in which the pressure indicator member (700) is screw-coupled to the upper cap portion (40) and the pressure indicator surface (710) of the pressure indicator member (700) protrudes.

[0093] In the present invention, the push button cover portion (30) of the discharge amount control portion (50) is interconnected with and operates with the push button (512). A push button coupling hole (392) is provided in the center of the push button cover portion (30) so that the push button (512) is coupled from the bottom to the top of the push button cover portion (30). When the push button (512) moves up and down, the push button coupling hole (392) guides the push button (512) so that it does not move out. The coupling projection (36) of the push button cover portion (30) is coupled to the guide coupling groove (534) of the push block guide (53) and the coupling projection groove (426) of the upper cap portion (40) to position the push button stopper projection (394) and the button side protrusion projection (515) so that they correspond to each other. A reinforcing flange (34) is formed at the bottom of the push button cover portion (30) so that the button cover fixing ring (54) is positioned for fixing the button cover. A reinforcing flange (34) is engaged with an internal projection (542) to rotate the button cover fixing ring (54), thereby connecting the button cover fixing ring fixing female screw (544) and the button cover fixing ring fixing male screw (424) to secure it. A push button coupling hole (392) for coupling a push button (512) is drilled in the upper part of the push button cover (39), and a push button stopper projection (394) is installed on both sides downward from the push button coupling hole (392) to form corresponding button side protrusions (515) on both sides of the push button (512). When the push button (512) is pressed with a finger, the push block (51) is pressed, causing high-pressure air to be depressurized and discharged. When the pressing force is removed, the push block (51) moves upward due to the internal pressure of the high-pressure container (10), and the corresponding button side protrusions (515) formed on both sides of the push button (512) are pushed It is characterized by being configured so that the air containing oxygen that is discharged is locked by being caught on the push button stopper projection (394) of the button cover (39).

[0094] 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) of the upper cap part is formed, an upper sealing ring (15a) of the upper cap container is fitted into the upper sealing ring groove (15ah) of the upper cap container, which is an outer groove of the upper cap part (40), and below where the male screw (422) of the upper cap part is formed, an upper sealing ring (15b) of the upper cap container is fitted into the lower sealing ring groove (15bh) of the upper cap container, which is an outer groove of the upper cap part (40), thereby maintaining a seal. The lower seal of the high-pressure container (10) is maintained by forming a female screw (15) on the lower inner surface of the high-pressure container (10) and coupling with the bottom filling cover formed on the outer surface of the bottom filling cover part (60). A sealing ring (15c) is formed on the upper side where the bottom cover sealing screw (604) is formed, and is fitted into the sealing ring groove (15ch) on the outer edge of the bottom filling cover part (60), and a sealing ring (15d) on the lower side where the bottom cover sealing screw (604) is formed, and is fitted into the sealing ring groove (15dh) on the outer edge of the bottom filling cover part (60), thereby maintaining airtightness. The reinforcing means of the high-pressure container (10) is formed by contacting the inner wall surface of the inner central part so as to protrude towards the center, and is configured to protrude in a circular shape into the interior of the high-pressure 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 a reinforcing flange (12) having a hole formed in the center to allow the high-pressure filled air to pass through is formed in one or the high-pressure filled air It is characterized by having a reinforcing means that improves durability by reinforcing the high-pressure vessel (10) to respond to the increasing pressure as the pressure increases, and by being composed of a homogeneous material in the shape of a metal rod to withstand high-pressure air pressure.

[0095] A plurality of external reinforcing protrusions (13) are formed at regular intervals on the exterior 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 a plurality of external reinforcing protrusions (13) so that the high-pressure container (10) is reinforced to reinforce the high-pressure container (10) so that it is safe even under increasing pressure, thereby improving durability. However, due to the bottom filling cover part (60) assembled on the bottom of the high-pressure container (10) and the upper cap part (40) assembled on the top of the high-pressure container (10), cutting is performed to form the upper female screw (14) and the lower female screw (16) of the high-pressure container (10), so the high-pressure container (10) becomes vulnerable to pressure, and there is a limitation on the installation position of the reinforcing flange (12) due to the assembly location, the external on the exterior of the high-pressure container (10) It is characterized by having multiple reinforcing protrusions (13) distributed therein.

[0096] A bottom filling cover portion (60) is assembled by screwing a bottom filling cover portion (60) formed on the lower part of the high-pressure container (10) with a bottom filling cover connecting screw (604) formed on the outer periphery of the bottom filling cover portion (60), and the structure in which the bottom filling cover portion (60) engages with the lower edge of the high-pressure container (10) to withstand high internal pressure is such that a bottom filling cover connecting projection (18) protruding downward from the lower edge of the high-pressure container (10) engages with the bottom filling cover connecting projection groove (608) of the bottom filling cover portion (60), and a bottom filling cover joining surface (19) formed on the lower edge of the high-pressure container (10) contacts the bottom filling cover joining surface (609) of the bottom filling cover portion (60), and the bottom filling cover connecting projection (18) formed on the lower edge of the high-pressure container (10) The bottom filling cover restraining protrusion (607) is coupled with the bottom filling cover coupling protrusion groove (608) of the bottom filling cover part (60) to prevent the high-pressure container (10) from swelling and exploding due to high internal pressure, and the bottom filling cover restraining protrusion (607) restrains the container bottom coupling protrusion (18) to withstand high internal pressure. The upper cap part (40) is assembled on the upper part of the high-pressure container (10) by screw coupling with the container upper female screw (14) formed on the upper part of the high-pressure container (10) and the upper cap part male screw (422) formed on the outer periphery of the upper cap part (40). The structure in which the upper cap part (40) engages with the upper edge of the high-pressure container (10) to withstand high internal pressure is such that the container upper coupling protrusion (16), which protrudes upward from the upper edge of the high-pressure container (10), is the upper cap part of the upper cap part (40). 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) is in contact with the upper cap joint surface (414) of the upper cap part (40).The container upper connecting projection (16) formed on the upper edge of the high-pressure container (10) is coupled with the upper cap part connecting projection groove (412) of the 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, thereby preventing the high-pressure container (10) from swelling up and exploding due to the high internal pressure.

[0097] Meanwhile, regarding the main pressure reduction unit (100) and the discharge pressure reduction unit (80) that perform the role of pressure reduction in the present invention, the roles are explained. In the present invention, the main pressure reduction unit (90) is configured to withstand the pressure of high-pressure air by being coupled to the upper part of a cylindrical high-pressure container (10), and is equipped with a discharge pressure reduction unit (80) and a pressure display unit (70) inside the cap unit (40) which is sealed and coupled, and is coupled to the main pressure reduction member installation space (102). The lower part of the main pressure reduction unit (90) is connected to the inside of the high-pressure container (10) and is in contact with high-pressure air containing oxygen, and the upper part is connected to and in contact with the discharge pressure reduction unit (80). The discharge pressure reduction unit (80) moves up and down in conjunction with the up and down movement of the discharge amount control unit (50) push button (512), and the discharge The nozzle member (120) of the main pressure reduction unit (90), which is in contact with and linked with the pressure reduction unit (80), moves up and down in conjunction with the main pressure reduction unit (90) so that air is discharged, discharge is reduced, or is submerged, and is characterized by depressurizing the air inside the high-pressure container (10) containing high-pressure oxygen in multiple stages.

[0098] In the present invention, the discharge pressure reduction unit (80) is normally exposed to an external space at a pressure equal to atmospheric pressure, and when high-pressure air is discharged while the nozzle head (126) of the nozzle member (120) belonging to the main pressure reduction unit (90) is pressed downward due to the discharge pressure reduction unit (80) in contact with the discharge amount control unit (50), it is a section where pressure reduction occurs again after passing through the section where the pressure reduction phenomenon of the main pressure reduction unit (90) occurs. It is installed in the discharge pressure reduction member installation space (802), which is a circular installation space within the upper cap unit (40), and the discharge pressure reduction upper piece (810) is connected to and linked with the push block tip (58), which is the lower end of the discharge amount control unit (50), and is installed in contact with the lower part of the discharge pressure reduction upper piece (810) in the discharge pressure reduction member installation space (802), which is a circular installation space within the upper cap unit (40), and the main It is characterized by being composed of a discharge pressure reduction lower piece (830) that is in contact with and linked to the upper surface (128) of the nozzle head of the pressure reduction unit (90), and is exposed to the external space at a pressure equal to atmospheric pressure, and then, when the push button (512) is pressed, the pressure reduction of the main pressure reduction unit (90) occurs and then the pressure reduction is performed again, and the discharge pressure reduction upper piece (810) and the discharge pressure reduction lower piece (830) form a discharge pressure reduction 1 section (470) and a discharge pressure reduction 2 section (480).

[0099] This explains the interaction relationship between the discharge volume control unit (50) and the main pressure reduction unit (90) of the present invention. In the present invention, the main pressure reduction unit (90) is connected to the lower part of the discharge pressure reduction unit (80) which is connected to the discharge volume control unit (50) according to the up-and-down movement of the push button (512), and is composed of a nozzle member (120) connected to the upper part of a movable nozzle member (130) capable of up-and-down movement, a nozzle guide member (110) that guides the movable nozzle member (130), a movable nozzle member (130) connected to the inside of the nozzle guide member (110) so as to be able to move up-and-down according to the control of the discharge volume control unit (50), and a locking pressure control pressure reduction member (140) that is connected to the nozzle guide member (110), adjusts the locking pressure by the rotation of a screw, restrains and connects the nozzle guide member (110) to reduce high-pressure air containing oxygen, and the nozzle guide The nozzle member (120) and the movable nozzle member (130) are housed in the internal space formed by the member (110) and the pressure-regulating depressurizing member (140) so as to be movable according to the control of the discharge volume control unit (50), and are configured so that the amount of air discharged is proportional to the vertical movement distance of the discharge volume control unit (50).

[0100] This explains that the pressure reduction section of the discharge pressure reduction unit (80) is composed of a discharge pressure reduction section 1 (470) and a discharge pressure reduction section 2 (480). In the present invention, the pressure reduction section of the discharge pressure reduction unit (80) is composed of a discharge pressure reduction upper part (810) and a discharge pressure reduction lower part (830). The detailed configuration is a discharge pressure reduction section 1 (470) in which pressure reduction is performed by arriving at the discharge pressure reduction space 1 (270), which is a space composed of the inner surface (813) of the pressure reduction upper part, the inner wall surface (812) of the pressure reduction upper part, the protruding surface (835) of the pressure reduction lower part, and the wall surface (839) of the lower circular protruding tube, through the discharge pressure reduction 1 gap (370), which is a pressure reduction lower part connection hole (837) from the 6th pressure reduction space (260). From the discharge pressure reduction space 1 (270), the lower It is characterized by being composed of a discharge pressure reduction 2 section (480) in which pressure reduction proceeds by passing through a discharge pressure reduction 2 gap (380), which is a gap formed between a circular protruding projection (846) and the inner surface (813) of the upper pressure reduction piece, and arriving at a discharge pressure reduction 2 space (280), which is a space formed by a lower circular protruding tube groove (842) and the inner surface (813) of the upper pressure reduction piece.

[0101] This explains that pressure reduction proceeds while passing through the main pressure reduction member (90) and continues to proceed while passing through the discharge pressure reduction section 1 (470) among the pressure reduction sections of the discharge pressure reduction section (80). In the present invention, the discharge pressure reduction section 1 (470) is a section where pressure reduction is further performed through the discharge pressure reduction section (80) so that the pressure reduced after passing through the 6th pressure reduction section (460) is convenient for the user to use. The pressure reduction of one stage is completed while passing through the main pressure reduction member (100) which reduces high-pressure filled air inside the high-pressure container (10). It is an expanded space through the 6th gap section (360), which is a gap formed between the lower surface of the nozzle head (126) and the hollow inner wall of the hollow nozzle guide (112), and the lower surface (831) of the discharge pressure reduction lower part (830) of the discharge pressure reduction section (80) and the discharge pressure reduction member The first stage of pressure reduction is completed by reaching the sixth pressure reduction space (260), which is formed by the space between the lower surface (804) of the installation space (802); for the second stage of pressure reduction, the pressure reduction lower part connecting hole (837), formed by the narrow hole of the discharge pressure reduction lower part (830) of the discharge pressure reduction section (80) in the sixth pressure reduction space (260), acts as the discharge pressure reduction 1 gap (370); passing through the discharge pressure reduction 1 gap (370), it reaches the discharge pressure reduction 1 space (270), which is a wide space formed by the inner surface (813) of the pressure reduction upper part, the inner wall surface (812) of the pressure reduction upper part, the protruding surface (835) of the pressure reduction lower part, and the wall surface (839) of the lower circular protruding tube; thereby completing the discharge pressure reduction 1 section (470) and achieving pressure reduction, and discharge from the sixth pressure reduction space (260) It is characterized by being composed of a section in which pressure reduction proceeds as it passes through a pressure reduction gap (370) and reaches an expanded space, a discharge pressure reduction space (270).

[0102] This explains that pressure reduction proceeds while passing through the main pressure reduction member (90), and continues to proceed by passing through the discharge pressure reduction section 1 (470) among the pressure reduction sections of the discharge pressure reduction section (80) and then passing through the discharge pressure reduction section 2 (480). In the present invention, the discharge pressure reduction section 2 (480) is a section where pressure reduction is further performed through the discharge pressure reduction section (80) so that the pressure reduced after passing through the discharge pressure reduction section 1 (470) is convenient for the user to use. As the second step of the two-stage pressure reduction, it passes through the discharge pressure reduction section 2 gap (380), which is a gap formed between the lower circular protrusion (846) formed at a narrow interval in the discharge pressure reduction section 1 (270) and the inner surface (813) of the pressure reduction upper piece, and then passes through the discharge pressure reduction section 2, which is a space formed by the lower circular protrusion tube groove (842) and the inner surface (813) of the pressure reduction upper piece. It is characterized by being composed of a section in which pressure reduction proceeds as it reaches the 2nd space (280) and the 2nd discharge pressure reduction section (480) is completed and pressure reduction is performed, and the discharge pressure reduction section (280), which is an expanded space, is reached from the 1st discharge pressure reduction space (270) through the 2nd discharge pressure reduction gap (380).

[0103] This explains the operational relationship between the discharge pressure reduction unit (80) and the discharge volume control unit (50). It explains the operational relationship in which, when the push button (512) is pressed, the discharge volume control unit (50), which is a single body, is pressed, and the nozzle head (126) of the nozzle member (120) is pressed, causing air to be discharged. In the present invention, the discharge pressure reduction unit (80) is normally exposed to the external space at a pressure equal to atmospheric pressure, and is a section where a pressure reduction phenomenon occurs only when the nozzle head (126) of the nozzle member (120) is pressed downward by the discharge volume control unit (50) and discharges. It is installed in a circular installation space, which is the internal space of the upper cap unit (40), and the discharge pressure reduction upper piece (810) which contacts and interacts with the lower end of the discharge volume control unit (50), and the main pressure reduction member (100) which is installed in a circular installation space, which is the internal space of the upper cap unit (40). It is composed of a discharge pressure reduction lower part (830) that is in contact with and interlocked with the upper surface (128) of the nozzle head, and the discharge pressure reduction upper part (810) and the discharge pressure reduction lower part (830) are configured to be in contact while maintaining airtightness, and the amount of air discharged is increased or decreased through the upper surface (128) of the nozzle head of the main pressure reduction member (100) that is in contact with the lower end of the intermediate discharge pressure reduction part (80) according to the movement of the discharge amount control part (50), and the lower end of the discharge amount control part (50), which is the lower end of the push block tip (58), contacts the discharge passage (817) of the discharge pressure reduction upper part (810) and pushes downward, and the discharge pressure reduction lower part (830) that is in close contact with the lower side of the discharge pressure reduction upper part (810) is pushed downward, and the upper surface (128) of the nozzle head that is in contact with the lower surface of the discharge pressure reduction lower part (830) It is characterized by being configured such that the main pressure relief member (100) is opened by being pressed, allowing high-pressure air to be discharged.

[0104] This explains the mutual configuration and operational relationship between the discharge pressure reduction unit (80), the upper cap unit (40), and the discharge amount control unit (50). In the present invention, the discharge pressure reduction unit (80) is installed in the discharge pressure reduction member installation space (802), which is a circular installation space within the upper cap unit (40), and is composed of a discharge pressure reduction upper piece (810) that is in contact with and interlocked with the lower end of the discharge amount control unit (50), and a discharge pressure reduction lower piece (830) that is installed in the discharge pressure reduction member installation space (802), which is a circular installation space within the upper cap unit (40), and is in contact with and interlocked with the nozzle head upper surface (128) of the main pressure reduction member (100). Pressure reduction is achieved through the discharge pressure reduction 1 space (270) and discharge pressure reduction 2 space (280) formed by the discharge pressure reduction upper piece (810) and the discharge pressure reduction lower piece (830). It is provided with a configuration in which a pressure-reducing upper piece (810) is provided with a pressure-reducing upper piece O-ring (811) on the outer surface of the pressure-reducing upper piece (810), and a passage is connected to the discharge port (29) and the discharge passage (27) of the push block (51) in the center of the upper surface of the pressure-reducing upper piece (810), and a discharge passage (817) is formed penetrating from the inner surface of the pressure-reducing upper piece (810), and the inner surface of the pressure-reducing upper piece (810) is formed with two steps protruding from the flat inner surface (813) of the pressure-reducing upper piece to form a pressure-reducing upper piece middle surface (815) and an upper airtight contact surface (816), and the upper airtight contact surface (816), which is the end step surface of the pressure-reducing upper piece (810), contacts the lower airtight contact surface (836) of the pressure-reducing lower piece (830) to maintain airtightness, and the pressure-reducing upper piece A plurality of discharge pressure reduction gaps (370), which are discharge pressure reduction lower part connecting holes (837) that connect an air passage from the lower surface of the discharge pressure reduction lower part (830) to the discharge pressure reduction lower part protruding surface (835), are formed by penetrating the middle step surface (815) of the upper part (810) and the protruding surface (835) of the discharge pressure reduction lower part (830) to maintain airtightness.A discharge pressure reduction space (270) is formed at the point where the discharge pressure reduction lower part connection hole (837) ends, and the discharge pressure reduction space (270) is composed of the inner surface (813) of the pressure reduction upper part, the inner wall surface (812) of the pressure reduction upper part, the protruding surface (835) of the pressure reduction lower part, and the wall surface (839) of the lower circular protruding tube, and the lower surface (831) of the discharge pressure reduction lower part (830) is configured to be in contact with the upper surface (128) of the nozzle head of the main pressure reduction member (100).

Claims

1. In a structure for reducing pressure to a pressure suitable for breathing in a high-pressure air breathing apparatus filled with oxygen-containing air at high pressure, A main pressure reduction unit (90) that reduces the pressure of high-pressure air inside (10a) of a high-pressure container (10) to a pressure within a range usable by the user, and when the operator presses the discharge amount control unit (50) to supply an appropriate amount of air, High-pressure air inside (10a) of the above-mentioned high-pressure container (10) passes through the main pressure reduction unit (90), is reduced in pressure, and discharged, and the discharge amount is adjusted in proportion to the operating displacement of pressing the discharge amount control unit (50). It includes a discharge volume control unit (50) configured to supply air through a discharge passage formed inside, and The above-mentioned high-pressure air breathing device is, A cylindrical high-pressure container (10) that stores air containing oxygen for breathing by filling it at high pressure, and a lower portion of the high-pressure container (10) that is assembled thereon. The lower part is sealed with a cover to safely contain high-pressure air filled inside the high-pressure container (10), and a bottom filling cover part (60) for filling high-pressure air from the bottom inside the high-pressure container (10), and The upper part of the high-pressure container (10) is sealed with a cap to safely contain high-pressure air filled inside the high-pressure container (10), and the upper cap part (40) is assembled to supply high-pressure air from inside the high-pressure container (10) to a discharge volume control part (50). Inside the upper cap portion (40), A main pressure reduction unit (90) that reduces the pressure of high-pressure air inside (10a) of the above-mentioned high-pressure container (10) to a pressure range usable by the user in multiple stages, and A discharge pressure reduction unit (80) that further reduces the pressure of the air discharged after being depressurized through the main pressure reduction unit (90) to a pressure suitable for use by the user, and It is composed of a pressure display unit (70) that displays the pressure of high-pressure air filled inside the high-pressure container (10), and On the upper part of the upper cap portion (40) and the discharge pressure reduction portion (80), When an operator presses a push button (512) with a finger to supply an appropriate amount of air, the high-pressure air inside (10a) of the high-pressure container (10) passes through a main pressure reduction section (90), is reduced in pressure and discharged, and passes through a discharge pressure reduction section (80) that is reduced in pressure again, and a discharge amount control section (50) configured to supply air while adjusting the discharge amount in proportion to the operating displacement of the operator pressing the push button (512) with a finger, and A push button cover part (30) configured to protect the discharge amount control part (50) and to support and guide the push button (512), and A pressure reduction structure for a portable refillable air breathing device, characterized by including a lid (31) that covers the above-mentioned push button cover portion (30) and protects the above-mentioned discharge volume control portion (50) from contamination by foreign substances.

2. In Paragraph 1, The above discharge amount control unit (50) guides the push block guide (53) by adjusting the push button (512) and moves the push block (51) up and down, A nozzle member (120) of a main pressure reducing member (100) is pressed up and down to supply oxygen-containing air to the user through an air discharge hole (519), configured to A pressure reduction structure for a portable refillable air breathing device, characterized by being composed of a push block (51), a push button (512), a push block guide (53), and a push button cover part (30).

3. In Paragraph 2, A pressure reduction structure for a portable refillable air breathing device, characterized in that when the push button (512) of the discharge volume control unit (50) is not operated in the standby state, the first pressure reduction section (410) to the third pressure reduction section (430) is equal to the internal pressure of the high-pressure container (10), and the fourth pressure reduction section (440) to the sixth pressure reduction section (460), which is the section behind the locked sealing protrusion (132) and the sealing member 2 (118), is equal to the atmospheric pressure, and when the push button (512) of the discharge volume control unit (50) is operated in the usage state, the pressure is gradually reduced from the internal pressure of the high-pressure container (10) to the first pressure reduction section (410) to the sixth pressure reduction section (460), so as to be supplied to the user by passing between the open sealing protrusion (132) and the sealing member 2 (118).

4. In Paragraph 1, The upper cap portion (40) is configured to be coupled to the upper part of a cylindrical high-pressure container (10) to withstand the pressure of high-pressure air, and is coupled. The upper cap portion (40) is equipped with the main pressure reducing portion (90), the discharge pressure reducing portion (80), and the pressure display portion (70). The lower part of the main pressure reducing unit (90) is connected to the inside (10a) of the high-pressure container (10), and The upper part of the main pressure reduction unit (90) is in contact with and connected to the discharge pressure reduction unit (80), and The above discharge pressure reduction unit (80) presses the discharge pressure reduction unit (80) according to the up and down movement of the discharge amount control unit (50), and The main pressure reduction unit (90), which is in contact with and linked to the discharge pressure reduction unit (80), is pressed to discharge air, and is configured to do so. The pressure display part (70) is connected through the pressure gauge coupling hole (47) of the upper cap part (40) formed to communicate within the high-pressure container (10) (10a), and the pressure transmitted through the pressure transmission microhole (474) is displayed on the pressure display surface (710) through the pressure gauge flow hole (722). This describes a pressure reduction structure for a portable refillable air breathing device.

5. In Paragraph 1, The main pressure reduction unit (90) is configured to withstand the pressure of high-pressure air by being coupled to the upper part of a cylindrical high-pressure container (10), and is equipped with a discharge pressure reduction unit (80) and a pressure display unit (70) inside the upper cap unit (40) which is sealed and coupled, and is coupled to the main pressure reduction member installation space (102). The lower part of the main pressure reduction unit (90) is connected to the interior (10a) of the high-pressure container (10) and is in contact with high-pressure air containing oxygen, and the upper part is connected to and in contact with the discharge pressure reduction unit (80). The discharge pressure reduction unit (80) moves up and down in conjunction with the up and down movement of the discharge amount control unit (50) push button (512), and moves up and down in conjunction with the nozzle member (120) of the main pressure reduction unit (90) which is in contact with and in conjunction with the discharge pressure reduction unit (80) so that air is discharged, or A pressure reduction structure for a portable refillable air breathing device, configured to reduce or submerge discharge, and characterized by depressurizing the air inside (10a) of a high-pressure container (10) containing high-pressure oxygen in multiple stages.

6. In Paragraph 1, The above main pressure reduction unit (90) is, It is composed of a nozzle guide member (110), a nozzle member (120), a movable nozzle member (130), and a locking pressure control pressure reducing member (140). A sealing member 1 (116) is inserted into the hollow nozzle guide (112), which is an external protrusion of the nozzle guide member (110), and coupled to the groove. A sealing member 2 (118) is coupled to the groove inside the nozzle guide member (110), and A nozzle member (120) is integrally formed at the tip of a movable nozzle member (130), and the nozzle member (120) is inserted into the interior of a nozzle guide member (110) so as to be movable up and down so as to be coupled to the hollow of a hollow nozzle guide (112). It is configured by wrapping the nozzle guide member (110) and combining the locking pressure regulating pressure reducing member (140). A nozzle member (120) coupled to the upper part of a movable nozzle member (130) capable of vertical movement, which is coupled to the lower part of a discharge pressure reduction unit (80) that is coupled to the discharge volume control unit (50) in accordance with the vertical movement of a push button (512), and a nozzle guide member (110) that guides the movable nozzle member (130). A movable nozzle member (130) coupled to be able to move up and down according to the control of the discharge amount control part (50) inside the nozzle guide member (110), and coupled to the nozzle guide member (110). It is composed of a locking pressure regulating pressure reducing member (140) that 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 pressure reduction structure for a portable refillable air breathing device, characterized in that a nozzle member (120) and a movable nozzle member (130) are housed in the internal space formed by the nozzle guide member (110) and the pressure regulating pressure reduction member (140) so as to be movable according to the control of the discharge volume control unit (50), and the air discharge volume is discharged in proportion to the vertical movement distance of the discharge volume control unit (50).

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

8. In Paragraph 7, The above first depressurization section is a section where the high-pressure air filled inside (10a) of the high-pressure container (10) is first depressurized. High-pressure filled air inside (10a) of the above-mentioned high-pressure container (10) flows through the first gap section (310), which is a narrow space, and pressure reduction proceeds. It is composed of a first gap section (310) and a first pressure reduction space section (210), and The first gap portion (310) is combined with a gap female screw (142) formed inside the cylindrical main pressure reducing member installation space (102) inside the upper cap portion (40) and a gap male screw (144) formed on the outside of the locking pressure adjusting pressure reducing member (140), High-pressure air is configured to flow through the gap between the threads and grooves formed by the gap female screw (142) and the gap male screw (144), and The first pressure reduction space (210) is composed of a space formed by passing through a gap female screw (142) formed inside a cylindrical main pressure reduction member installation space (102) inside an upper cap part (40) at the point where the path of the first gap part (310) ends, and a space formed by passing through a gap male screw (144) formed on the outer side of a locking pressure adjustment 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 pressure reduction structure for a portable refillable air breathing device, characterized by being composed of a section in which pressure reduction proceeds, passing through a first gap section (310) inside the high-pressure container (10) (10a) and reaching a first pressure reduction space section (210) having an expanded cross-sectional area.

9. In Paragraph 7, The above-mentioned second depressurization section is a section in which the pressure reduced after passing through the first depressurization section is further reduced. High-pressure filled air inside (10a) of the high-pressure container (10) flows through a narrow space, and the air that has undergone depressurization reaches the first depressurization space (210). From the first depressurization space (210), it passes through the second gap section (320) and reaches the second depressurization space (220), which is an expanded space, where depressurization is performed. The second gap section (320) is composed of the second gap section (320) and the second depressurization space (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 regulating depressurization member (140) forming the first depressurization space (210) to form a gap, and the outer surface of the nozzle guide member (110) and the inner surface of the locking pressure regulating depressurization member (140) form A pressure reduction structure for a portable refillable air breathing device, characterized in that a connection gap (324) is formed, and the second pressure reduction space (220) is composed of an internal 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 inter-space 2 (226) which is the space remaining after the movable nozzle member (130) is connected to the nozzle guide member (110), and an inter-space 1 (224) between the nozzle guide member (110), the rear end, and the locking pressure control pressure reduction member (140), and 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.

10. In Paragraph 7, The above-mentioned 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 (10a) of the above high-pressure container (10) passes through a narrow space and reaches a second depressurization space (220), which is an expanded space, and depressurization proceeds. It is composed of a second pressure reduction space (220) and a third gap section (330) and a third pressure reduction space (230), through which pressure reduction proceeds as it passes through the third gap section (330) from the second pressure reduction space (220) and reaches the third pressure reduction space (230), which is an expanded space. The third gap portion (330) is formed as a gap between the inner surface of the nozzle guide member (110) and the lower outer surface (134) of the movable nozzle member (130), through which high-pressure air existing in the second depressurization space portion (220) passes. The third depressurization space (230) is composed of a space formed between the outer circumferential cutting surface (136) formed on the central outer circumferential surface of the movable nozzle member (130) and the inner circumferential surface of the nozzle guide member (110), where the path of the third gap section (330) ends and the space expands. A pressure reduction structure for a portable refillable air breathing device, characterized by being composed of a section in which pressure reduction proceeds as it passes through a third gap section (330) from a second pressure reduction space (220) and reaches a third pressure reduction space (230), which is an expanded space.

11. In Paragraph 7, 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 (10a) of the above 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. The fourth gap section (340) is composed of a third pressure reduction space (230), a fourth gap section (340), and a fourth pressure reduction space (240). The fourth gap section (340) is composed of an upper gap (342) between the inner surface of a nozzle guide member (110) and the upper outer surface (134) of a movable nozzle member (130), through which high-pressure air present in the third pressure reduction space (230) passes; an upper surface protrusion gap (344) formed by maintaining airtightness of high-pressure filled air inside (10a) of a high-pressure container (10) by the sealing member 2 (118) formed in a circular shape at the front end of the inner hole of the nozzle guide member (110) and a sealing projection (132) formed in a circular shape on the front surface of the movable nozzle member (130) being in close contact with each other; and a gap between the lower surface of the sealing member 2 (118) and the upper surface (139) of the movable nozzle member (130). It is formed as an upper gap (345), and When the nozzle head (126) of the nozzle member (120) is pressed downward by the discharge volume control part (50), the gap between the sealing member 2 (118) and the sealing projection (132) increases according to the distance of pressing, As the discharged air increases and moves upward, the gap between the sealing member 2 (118) and the sealing projection (132) becomes smaller, so the discharged air decreases, and When the pressure disappears, the gap between the sealing member 2 (118) and the sealing projection (132) disappears, so the discharged air is formed to be submerged, and The fourth depressurization space (240) is composed of a space formed by a wall surface formed along the circumference of the lower outer surface of the nozzle member (120), the upper surface (139) of the movable nozzle member, the lower surface (115) of the nozzle tapered stem hole, and one side surface of the sealing member 2 (118), where the path of the fourth gap section (340) ends and the space expands. A pressure reduction structure for a portable refillable air breathing device, characterized by being composed of a section in which pressure reduction proceeds as it passes through the third pressure reduction space (230), the fourth gap section (340), and reaches the fourth pressure reduction space (240), which is an expanded space.

12. In Paragraph 7, 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 (10a) of the above high-pressure container (10) passes through a narrow space and reaches the fourth depressurization space (240), which is an expanded space, and depressurization proceeds. It is composed of a fourth pressure reduction space (240), a fifth gap section (350), and a fifth pressure reduction space (250), wherein pressure reduction proceeds as it passes through the fifth gap section (350) from the fourth pressure reduction space (240) and reaches the fifth pressure reduction space (250), which is an expanded space. The above-mentioned fifth gap portion (350) is formed by a taper stem gap (346) which is a gap formed between the nozzle taper stem (124) of the nozzle member (120) formed as a single body at the tip of the movable nozzle member (130), through which high-pressure air existing in the fourth depressurization space portion (240) passes, and the nozzle taper stem groove (114) formed by the inner surface of the hollow nozzle guide (112) of the nozzle guide member (110). When the nozzle head (126) of the nozzle member (120) is pressed downward by the discharge volume control part (50), the gap between the tapered stem gap (346) expands according to the distance of pressing, increasing the discharged air, and when it moves upward, the gap between the tapered stem gap (346) contracts, decreasing the discharged air. When the pressure disappears, the gap between the sealing member 2 (118) and the sealing projection (132) disappears, so the discharged air is formed to be submerged, and The fifth pressure reduction space (250) is composed of a space formed between the inner surface of a hollow nozzle guide (112) and a circumferential groove (122) of a nozzle machined along the circumference at the center of the outer circumferential surface of the nozzle member (120), where the path of the fifth gap section (350) ends and the space expands. A pressure reduction structure for a portable refillable air breathing device, characterized by being composed of a section in which pressure reduction proceeds as it passes through the fourth pressure reduction space (240), the fifth gap section (350), and reaches the fifth pressure reduction space (250), which is an expanded space.

13. In Paragraph 7, 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 (10a) of the above 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, and 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 high-pressure air existing in the fifth depressurization space section (250) passes, and When the nozzle head (126) of the nozzle member (120) is pressed downward by the discharge volume control part (50), the gap between the tapered stem gap (346) expands according to the distance of pressing, increasing the discharged air, and when it moves upward, the gap between the tapered stem gap (346) contracts, decreasing the discharged air. When the pressure disappears, the gap between the sealing member 2 (118) and the sealing projection (132) disappears, so the discharged air is formed to be submerged, and The sixth pressure reduction space (260) is composed of a space formed by the lower surface (435) of the discharge pressure reduction member coupling hole (433), which is a circular installation space within the upper cap part (40) where the discharge pressure reduction member (80) is installed and the nozzle head (126), which is the tip of the nozzle member (120), protrudes and the path of the sixth gap part (360) ends and the space expands, and the lower surface (831) of the discharge pressure reduction lower piece, which is the lower surface of the discharge pressure reduction member (800). A pressure reduction structure for a portable refillable air breathing device, characterized by being composed of a section in which pressure reduction proceeds as it passes through the 6th gap section (360) from the 5th pressure reduction space (250) and reaches the 6th pressure reduction space (260), which is an expanded space.

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

15. In Paragraph 1, A plurality of external reinforcing protrusions (13) are formed at regular intervals on the outside of the high-pressure vessel (10) to reinforce the high-pressure vessel (10) so as to be safe even under increasing pressure, thereby improving durability, or Alternatively, the thickness of the high-pressure vessel (10) is formed with sufficient thickness, and a portion is cut off to retain multiple external reinforcing protrusions (13), thereby reinforcing the high-pressure vessel (10) to ensure safety even under increasing pressure and improving durability. Due to the bottom filling cover part (60) assembled at the bottom of the high-pressure container (10) and the upper cap part (40) assembled at the top of the high-pressure container (10), cutting is performed to form the upper female screw (14) and the lower female screw (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 pressure reduction structure for a portable refillable air breathing device, characterized by dispersing multiple external reinforcing protrusions (13) on the outside of the high-pressure container (10).

16. In Paragraph 1, A bottom filling cover portion (60) is assembled at the bottom of the high-pressure container (10) by screw coupling with a container bottom female screw (15) formed at the bottom of the high-pressure container (10) and a bottom filling cover coupling screw (604) formed on the outer circumference of the bottom filling cover portion (60). The 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 (600), and are screw-coupled with the lower female screw (15) of the high-pressure container (10) and the bottom filling cover coupling screw (604). The structure in which the bottom filling cover part (60) is engaged with the lower edge of the high-pressure container (10) to withstand high internal pressure is such that the container bottom connecting projection (18) protruding downward from the lower edge of the high-pressure container (10) is coupled with the bottom filling cover connecting projection groove (608) of the bottom filling cover part (60). The 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 (609) of the bottom filling cover part (60), and The container bottom coupling projection (18) formed on the lower edge of the high-pressure container (10) is coupled with the bottom filling cover coupling projection groove (608) of the bottom filling cover part (60), so that when the high-pressure container (10) swells and deforms due to the high pressure internal pressure (10ap) of the high-pressure container, the bottom filling cover restraining projection (607) restrains the container bottom coupling projection (18) to withstand the high pressure internal pressure (10ap). 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 A main pressure reducing member (100) and a discharge pressure reducing member (600) are combined in the upper cap portion (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 the high-pressure vessel (10) to withstand the internal pressure (10ap) of the high-pressure vessel 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 pressure reduction structure for a portable refillable air breathing device, 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) when the high-pressure container (10) swells and deforms due to the high-pressure internal pressure (10ap), thereby allowing it to withstand the high-pressure internal pressure (10ap).

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