Small-sized system for producing, storing, supplying, saving and using oxygen

Abstract

The utility model relates to the field of oxygen supply, in particular to a small-sized oxygen system for producing, storing, supplying and saving, which comprises a PSA (Pressure Swing Adsorption) oxygen production unit, an emergency oxygen production unit, a low-pressure buffer tank, an oxygen supercharger, a high-pressure oxygen storage tank, a master control module and a portable oxygen supply device. The master control module can detect and control all the functional module sets and intelligently control the working states of the oxygen generation system and the pressurization system by detecting the pressure, concentration and flow of gas in a pipeline, the PSA oxygen generation set and the medicament oxygen generation set can generate oxygen in different modes, and the oxygen generation efficiency is improved. The output low-pressure oxygen enters the low-pressure buffer tank to be temporarily stored and can be changed into high-pressure oxygen after passing through the oxygen supercharger, and the high-pressure oxygen is stored in the high-pressure oxygen storage tank and filled into the portable oxygen supply device to be used by an oxygen uptake person. The system can realize various forms of oxygen preparation, storage, supply and the like, and can meet oxygen supply requirements of different scenes.

Description

Technical Field

[0001] The utility model relates to the field of oxygen supply, and particularly relates to a small-sized oxygen generation, storage, supply and conservation oxygen system. Background Art

[0002] Oxygen has always been important both in plain areas and plateau areas. In daily life, regular oxygen inhalation can relax nerves, relieve nerve fatigue, improve the oxygen supply condition of the brain, and regulate the functions of the brain nervous system to a certain extent. Regular oxygen inhalation will also reduce the stress responses of the respiratory system, circulatory system, digestive system, and nervous system to varying degrees.

[0003] At present, most of the oxygen supply systems on the market are made of containers, which are relatively large in size, inconvenient for transportation and installation, and there are still certain drawbacks in the oxygen replenishment equipment. If a fault occurs in the oxygen generation equipment during use, the maintenance period is long, the efficiency is slow, and the cost is very high.

[0004] Some oxygen generators on the market currently lack a storage device, and their operation mode is continuous oxygen supply, that is, regardless of whether we inhale or not, the machine always outputs oxygen. The oxygen utilization rate of this oxygen supply method is relatively low and can only be used in the oxygen-using environment at home. If it is in places such as troops, hospitals, first aid stations, and sanatoriums in high-altitude areas or areas with underdeveloped transportation, the plan of centralized oxygen supply using an oxygen generator becomes unrealistic. Content of the Utility Model

[0005] In order to alleviate or solve at least one aspect or at least one point of the above problems, the present utility model is proposed.

[0006] A small-sized oxygen generation, storage, supply and conservation oxygen system of the present utility model includes: a PSA oxygen generation group (1), an emergency oxygen generation group (2), a low-pressure buffer tank (3), an oxygen booster (4), a high-pressure oxygen storage tank (5), a filling device and a portable oxygen supply device (7);

[0007] The oxygen outlet interfaces of the PSA oxygen generation group (1) and the emergency oxygen generation group (2) are connected in parallel and then connected to the air inlet of the low-pressure buffer tank (3) through a first pipeline;

[0008] The air outlet of the low-pressure buffer tank (3) is connected to the air inlet of the oxygen booster (4) through a second pipeline, and the air outlet of the oxygen booster (4) is connected to the air inlet of the high-pressure oxygen storage tank (5) through a third pipeline;

[0009] The air outlet of the high-pressure oxygen storage tank (5) is communicated with the filling device (8);

[0010] The filling device (8) is used to fill high-pressure oxygen into the portable oxygen supply device (7).

[0011] Preferably, it further includes a master control module, which is respectively connected to the PSA oxygen generation group (1), the emergency oxygen generation group (2), the low-pressure buffer tank (3), the oxygen booster (4), and the high-pressure oxygen storage tank (5) for control connection.

[0012] Preferably, a low-pressure sensor (31) is provided on the low-pressure buffer tank (3); a high-pressure sensor (51) is provided on the high-pressure oxygen storage tank (5); an oxygen concentration monitor (154) is provided at the oxygen outlet of the PSA oxygen generation group (1).

[0013] Preferably, the PSA oxygen generation group (1) includes a compressor (11), a switching valve (12), and a molecular sieve group (13); the molecular sieve group (13) includes a molecular sieve tower a (131) and a molecular sieve tower b (132);

[0014] The switching valve (12) includes an air inlet (121), an air outlet a (122), an air outlet b (123), and a return air port (124);

[0015] The air inlet (121) of the switching valve (12) is communicated with the air outlet of the compressor (11);

[0016] The switching valve can be switched between a first working state and a second working state;

[0017] In the first working state, the air outlet a (122) of the switching valve (12) is communicated with the air inlet end of the molecular sieve tower a (131); the air outlet b (123) of the switching valve (12) is communicated with the air inlet end of the molecular sieve tower b (132) and the return air port (124);

[0018] In the second working state, the air outlet b (123) of the switching valve (12) is communicated with the air inlet end of the molecular sieve tower b (132), and the air outlet a (122) of the switching valve (12) is communicated with the air inlet end of the molecular sieve tower a (131) and the return air port (124).

[0019] Preferably, the air outlet ends of the molecular sieve tower a (131) and the molecular sieve tower b (132) are connected in parallel and then communicated with the low-pressure buffer tank (3) through an oxygen delivery pipeline (15);

[0020] One-way valves (151) are provided at the air outlet ends of the molecular sieve tower a (131) and the molecular sieve tower b (132). A reversing valve (153) is provided on the oxygen delivery pipeline (15). The air outlet of the reversing valve (153) is communicated with the low-pressure buffer tank, and the return air port of the reversing valve (153) is communicated with an exhaust pipeline (152).

[0021] Preferably, the emergency oxygen generation group (2) is a chemical agent oxygen generation group (2a); it includes an oxygen generation water tank (2a1), a chemical agent bin (2a2), and an oxygen filter box a (2a3);

[0022] The medicament bin (2a2) is communicated with the oxygen - making water tank (2a1), and the oxygen - filtering box a (2a3) is used for filtering the oxygen at the outlet of the oxygen - making water tank (2a1).

[0023] Preferably, the medicament bin (2a2) includes an oxygen - making agent bin (2a21), a catalyst bin (2a22) and a discharge port (2a23); the oxygen - making agent bin (2a21) and the catalyst bin (2a22) are separated by a partition board, and are respectively communicated with the discharge port (2a23) through their respective openable and closable baffle plates (2a24).

[0024] Preferably, the feed port (2a12) of the oxygen - making water tank (2a1) is hermetically connected to the discharge port (2a23) at the bottom of the medicament bin (2a2); the oxygen outlet (2a13) of the oxygen - making water tank (2a1) is hermetically connected to the box body (2a31) of the oxygen - filtering box a (2a3).

[0025] Preferably, a recessed part is formed on the box body of the oxygen - making water tank (2a1), and a plurality of holes are formed at the bottom of the recessed part, and the plurality of holes form the oxygen outlet (2a13) of the oxygen - making water tank (2a1);

[0026] The oxygen - filtering box a (2a3) includes a box body (2a31), a first filter element (2a32) and an oxygen outlet connector a (2a33). A protruding part matched with the recessed part is formed at the bottom of the box body (2a31), and a plurality of holes are formed on the bottom surface of the protruding part.

[0027] Preferably, the emergency oxygen - making group (2) is a chemical oxygen candle oxygen - making group (2b); the chemical oxygen candle oxygen - making group (2b) includes an oxygen - making box (2b1), an oxygen candle body (2b2), a starter (2b3) and an oxygen - filtering box b (2b4);

[0028] The oxygen candle body (2b2) is placed inside the oxygen - making box (2b1); the starter is located outside the oxygen - making box and is connected to the oxygen candle body (2b2) through a wire; the oxygen - filtering box b (2b4) is placed at the air outlet position of the oxygen - making box (2b1) and is hermetically sealed. A second filter element (2b41) is arranged inside the oxygen - filtering box b (2b4), and an oxygen outlet connector b (2b42) is arranged at the top.

[0029] A small - sized or micro - sized oxygen - making, storing, supplying and saving oxygen system of the utility model integrates oxygen - making, oxygen - storing, oxygen - supplying, oxygen - saving and oxygen - using. It has a small volume, high space utilization rate, and has multiple oxygen - making schemes, and can realize the emergency oxygen - supplying scheme in case of special situations. And the system will store a certain amount of oxygen under normal circumstances for emergencies.

[0030] In addition, the system also adds the function of oxygen - saving during the use of oxygen. Only when we inhale, the oxygen can start to supply oxygen, reducing the waste of continuous oxygen supply, and also increasing the more comfortable oxygen - inhalation experience for oxygen - inhalers.

[0031] Compared with the prior art, the beneficial technical effects of the present utility model are as follows:

[0032] First, the system is small in size and high in space utilization rate.

[0033] Second, the system adopts multiple oxygen generation schemes to address the problem of oxygen supply in case of sudden failures.

[0034] Third, the system greatly reduces the technical limitations and costs of oxygen filling.

[0035] It solves the problem of waste of oxygen during use. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 It is a structural block diagram of a small-sized oxygen generation, storage, supply, and conservation system according to an exemplary embodiment of the present utility model.

[0037] Figure 2 It is a schematic diagram of the principle of a small-sized oxygen generation, storage, supply, and conservation system according to an exemplary embodiment of the present utility model.

[0038] Figure 3 It is Figure 2 an enlarged schematic diagram of the PSA oxygen generation group in

[0039] Figure 4 It is a three-dimensional schematic diagram of a small-sized oxygen generation, storage, supply, and conservation system according to an exemplary embodiment of the present utility model.

[0040] Figure 5 It is a structural schematic diagram of chemical reagent oxygen generation according to an exemplary embodiment of the present utility model.

[0041] Figure 6 It is a structural schematic diagram of chemical oxygen candle oxygen generation according to an exemplary embodiment of the present utility model.

[0042] Figure 7 It is a schematic diagram of the working process of a PSA oxygen generation and emergency oxygen generation combined oxygen supply system according to an exemplary embodiment of the present utility model.

[0043] Wherein: 1 - PSA oxygen generation group, 11 - compressor, 12 - switching valve, 121 - air inlet, 122 - outlet a, 123 - outlet b, 124 - return air port, 13 - molecular sieve group, 131 - molecular sieve tower a, 132 - molecular sieve tower b, 14 - exhaust muffler, 15 - oxygen delivery pipeline, 151 - check valve, 152 - exhaust pipeline, 153 - reversing valve, 154 - oxygen concentration monitor;

[0044] 2 - Emergency oxygen generation group, 2a - Chemical agent oxygen generation group, 2a1 - Oxygen generation water tank, 2a11 - Box body, 2a12 - Feed inlet, 2a13 - Oxygen outlet, 2a2 - Chemical agent bin, 2a21 - Oxygen generation agent bin, 2a22 - Catalyst bin, 2a23 - Discharge outlet, 2a24 - Baffle plate, 2a25 - Switch, 2a3 - Oxygen filter box a, 2a31 - Box body, 2a32 - First filter element, 2a33 - Oxygen outlet joint a, 2a34 - Check valve, 2b - Chemical oxygen candle oxygen generation group, 2b1 - Oxygen generation box, 2b2 - Oxygen candle body, 2b3 - Starter, 2b4 - Oxygen filter box b, 2b41 - Second filter element, 2b42 - Oxygen outlet joint b;

[0045] 3 - Low - pressure buffer tank, 31 - Low - pressure sensor, 32 - Overflow valve, 4 - Oxygen booster, 5 - High - pressure oxygen storage tank, 51 - High - pressure sensor, 52 - High - pressure pressure relief mechanism, 6 - Total control module, 7 - Portable oxygen supply device, 71 - Bottle body, 72 - Oxygen - saving outlet, 73 - High - pressure inflation joint, 8 - Filler. Detailed implementation manners

[0046] The following description of the embodiments of the present invention with reference to the drawings is intended to explain the overall inventive concept of the present invention and should not be construed as a limitation on the present invention. In the present invention, the same reference numerals represent the same or similar components.

[0047] The features described herein can be implemented in different forms and should not be construed as limited to the examples described herein. On the contrary, the examples provided herein are only to illustrate some of the many feasible ways of implementing the methods, devices, and / or systems described herein, and many other feasible ways will be apparent after understanding the disclosure of the present invention.

[0048] Although terms such as "first", "second", and "third" may be used herein to describe various components, assemblies, regions, layers, or parts, these components, assemblies, regions, layers, or parts should not be limited by these terms. On the contrary, these terms are only used to distinguish one component, assembly, region, layer, or part from another component, assembly, region, layer, or part.

[0049] In the specification, when an element (such as a layer, region, or substrate) is described as "on" another element, "connected to" or "bonded to" another element, the element can be directly "on" the other element, directly "connected to" or "bonded to" the other element, or there can be one or more other elements in between. On the contrary, when an element is described as "directly on" another element, "directly connected to" or "directly bonded to" another element, there can be no other elements in between.

[0050] The terms used herein are for describing various examples only and are not intended to limit the disclosure. Unless the context clearly indicates otherwise, the singular forms are also intended to include the plural forms. The terms "comprising", "including" and "having" specify the presence of the recited features, quantities, operations, components, elements and / or combinations thereof, but do not preclude the presence or addition of one or more other features, quantities, operations, components, elements and / or combinations thereof.

[0051] In order to enable those skilled in the art to use the content of the present utility model, the following exemplary embodiments may be given in combination with specific application scenarios, parameters of specific systems, devices and components, and specific connection methods hereinafter. However, for those skilled in the art, these embodiments are only examples, and the general principles defined herein can be applied to other embodiments and application scenarios without departing from the spirit and scope of the present utility model.

[0052] According to an exemplary embodiment of the present utility model: as Figure 1-6 shown, an oxygen-making, storing, supplying and saving system, as Figure 1 , shown in FIG. 4, includes a PSA oxygen-making unit 1, an emergency oxygen-making unit 2, a low-pressure buffer tank 3, an oxygen booster 4, a high-pressure oxygen storage tank 5, a total control module 6 and a portable oxygen supply device 7 that can be fixed on an equipment rack. The oxygen-making, storing, supplying and saving system is micro or small.

[0053] As Figure 2 shown, the oxygen outlet interfaces of the PSA oxygen-making unit 1 and the chemical oxygen-making unit 2 are connected in parallel and then connected to the inlet of the low-pressure buffer tank 3 through a first pipeline. The inlet of the oxygen booster 4 is connected to the outlet of the low-pressure buffer tank 3 through a second pipeline, and the outlet is connected to the inlet of the high-pressure oxygen storage tank 5 through a third pipeline. A filling device 8 is arranged at the outlet of the high-pressure oxygen storage tank 5, and the filling device 8 is used to fill high-pressure oxygen into the portable oxygen supply device 7.

[0054] As Figure 2 , shown in FIG. 3, the PSA oxygen-making unit 1 of the present utility model includes a compressor 11, a switching valve 12 and a molecular sieve group 13. The switching valve 12 includes an inlet 121, an outlet a 122, an outlet b 123 and a return air port 124. The inlet 121 of the switching valve 12 is connected to the outlet of the compressor 11, and the outlet a 122 and the outlet b 123 of the switching valve 12 are respectively connected to the inlet ends of the molecular sieve towers a 131 and b 132 of the molecular sieve group 13.

[0055] The switching valve can be switched between the first working state and the second working state; in the first working state, the air outlet a (122) of the switching valve (12) is communicated with the air inlet end of the molecular sieve tower a (131); the air outlet b (123) of the switching valve (12) is communicated with the air inlet end of the molecular sieve tower b (132) and the return air port (124); that is, the air inlet end of the molecular sieve tower b (132) is communicated with the air outlet b (123), and further communicated with the return air port (124).

[0056] In the second working state, the air outlet b (123) of the switching valve (12) is communicated with the air inlet end of the molecular sieve tower b (132), and the air outlet a (122) of the switching valve (12) is communicated with the air inlet end of the molecular sieve tower a (131) and the return air port (124). That is, the air inlet end of the molecular sieve tower a (122) is communicated with the air outlet a (122), and further communicated with the return air port (124).

[0057] As Figure 2 , as shown in Figure 3, the air outlet ends of the molecular sieve tower a (131) and the molecular sieve tower b (132) are connected in parallel and then communicated with the low-pressure buffer tank (3) through the oxygen delivery pipeline (15); check valves (151) are provided at the air outlet ends of the molecular sieve tower a (131) and the molecular sieve tower b (132), a reversing valve (153) is arranged on the oxygen delivery pipeline (15), the air outlet of the reversing valve (153) is communicated with the low-pressure buffer tank, and the return air port of the reversing valve (153) is communicated with the exhaust pipeline (152). The other end of the exhaust pipeline 152 is connected to the return air port 124 of the switching valve 12.

[0058] As Figure 2 shown, the oxygen outlet joint a2a33 of the oxygen filter box a2a3 is connected to the low-pressure buffer tank 3 through a pipeline, and a check valve 2a34 is provided therebetween to prevent gas backflow.

[0059] As Figure 1 , as shown in Figure 2, a low-pressure sensor 31 is arranged on the low-pressure buffer tank 3 for monitoring the internal air pressure; a high-pressure sensor 51 is arranged on the high-pressure oxygen storage tank 5 for monitoring the internal air pressure.

[0060] An oxygen concentration monitor 154 is arranged between the reversing valve 153 of the oxygen delivery pipeline 15 and the air outlet of the molecular sieve group 13 for monitoring the oxygen concentration. The total control module 6 controls the working states of the PSA oxygen generation group 1 and the oxygen supercharger 4 through the monitoring and signal feedback of the low-pressure sensor 31, the high-pressure sensor 51 and the oxygen concentration monitor 154.

[0061] As Figure 1, as shown in Figure 2, the oxygen supercharger 4 can boost the oxygen with a pressure of 0.05 - 0.2 MPa in the low-pressure buffer tank 3 to 10 - 30 Mpa for storage. An overflow valve 32 is provided on the low-pressure buffer tank 3; a high-pressure pressure relief mechanism 52 is provided on the high-pressure oxygen storage tank 5, and the overflow valve and the high-pressure pressure relief mechanism ensure the internal air pressure safety.

[0062] As Figure 1 , as shown in Figure 2, the portable oxygen supply device 7 includes a bottle body 71, an oxygen-saving air outlet 72 and a high-pressure inflation joint 73; the oxygen-saving air outlet 72 is placed at the top of the bottle body 71, and the oxygen-saving air outlet 72 controls the opening and closing of the internal components through the micro-negative pressure generated by the inhaler's inhalation to achieve synchronous breathing-triggered pulsed oxygen supply; the high-pressure inflation joint 73 is placed at the bottom of the bottle body 71 and is a high-pressure one-way intake structure. The charger 8 adopts a high-pressure quick-insert self-locking form and is connected to the high-pressure inflation joint 73 at the bottom of the portable oxygen supply device 7 for filling; when the charger 8 is connected to the high-pressure inflation joint 73, air is conducted, and the air flow is blocked after the connection is disconnected; the number of chargers 8 can be one or more, and multiple portable oxygen supply devices 7 can be filled simultaneously. The portable oxygen supply device 7 and the charger 8 adopt existing structures and will not be elaborated here.

[0063] According to an exemplary embodiment of the present invention, as Figure 5 shown, the emergency oxygen generation group 2 is driven without electricity and is a chemical agent oxygen generation group 2a. It includes an oxygen generation water tank 2a1, a medicine bin 2a2 and an oxygen filter box a2a3. The oxygen generation water tank 2a1 includes a box body 2a11, a feed inlet 2a12 and an oxygen outlet 2a13 at the top. The medicine bin 2a2 is communicated with the oxygen generation water tank 2a1, and the oxygen filter box a2a3 is used to filter the oxygen at the outlet of the oxygen generation water tank 2a1.

[0064] The medicine bin 2a2 includes an oxygen generation agent bin 2a21, a catalyst bin 2a22 and a discharge port 2a23; the oxygen generation agent bin 2a21 and the catalyst bin 2a22 are separated by a partition board and are respectively communicated with the discharge port 2a23 through their respective openable and closable baffle plates 2a24. The feed inlet 2a12 of the oxygen generation water tank 2a1 is hermetically connected to the discharge port 2a23 at the bottom of the medicine bin 2a2; the oxygen outlet 2a13 of the oxygen generation water tank 2a1 is hermetically connected to the box body 2a31 of the oxygen filter box a2a3.

[0065] As Figure 5 shown, a recessed part is formed on the box body of the oxygen generation water tank 2a1, and a plurality of holes are formed at the bottom of the recessed part, and the plurality of holes form the oxygen outlet 2a13 of the oxygen generation water tank 2a1; the oxygen filter box a2a3 includes a box body 2a31, a first filter element 2a32 and an oxygen outlet joint a2a33, and a protruding part matching with the recessed part is formed at the bottom of the box body 2a31, and a plurality of holes are formed on the bottom surface of the protruding part.

[0066] As Figure 5As shown in the figure, the feed inlet 2a12 of the oxygen - making water tank 2a1 is connected to the discharge outlet 2a23 at the bottom of the chemical agent bin 2a2 and sealed around. The oxygen outlet 2a13 of the oxygen - making water tank 2a1 is connected to the box body 2a31 of the oxygen filter box a2a3 and sealed around. The oxygen - making agent bin 2a21 and the catalyst bin 2a22 of the chemical agent bin 2a2 are arranged above the discharge outlet 2a23 and are arranged longitudinally side by side. A baffle plate 2a24 is provided between the bottoms of the oxygen - making agent bin 2a21 and the catalyst bin 2a22 and the discharge outlet 2a23. The opening and closing of the baffle plate 2a24 are mechanically controlled by a switch 2a25.

[0067] According to an exemplary embodiment of the present invention, as Figure 6 shown, in addition to the above - mentioned embodiment, the emergency oxygen - making group 2 can also be a chemical oxygen candle oxygen - making group 2b; the chemical oxygen candle oxygen - making group 2b includes an oxygen - making box 2b1, an oxygen candle body 2b2, a starter 2b3 and an oxygen filter box b2b4; the oxygen candle body 2b2 is placed inside the oxygen - making box 2b1; the starter 2b3 is connected to the inside of the oxygen candle body 2b2 and is fixed on the outer box body of the oxygen - making box 2b1.

[0068] The oxygen filter box b2b4 is placed at the air outlet position of the oxygen - making box 2b1 and is sealed with each other. A second filter element 2b41 is provided inside the oxygen filter box b2b4, and an oxygen outlet joint b2b42 is provided at the top.

[0069] As Figure 6 shown, a recessed part is formed on the box body of the oxygen - making box 2b1. A plurality of holes are formed at the bottom of the recessed part, and the plurality of holes form the oxygen outlet of the oxygen - making box 2b1; the oxygen filter box a2a3 includes a box body 2a31, a first filter element 2a32 and an oxygen outlet joint a2a33. A protruding part matching with the recessed part is formed at the bottom of the box body 2a31, and a plurality of holes are formed on the bottom surface of the protruding part.

[0070] According to an exemplary embodiment of the present invention, as Figure 1-7 shown, a method for realizing micro - scale oxygen production, storage, supply and conservation includes the following steps:

[0071] Step 1: Under normal circumstances, the system is powered on and starts working. The master control module 6 issues an instruction to start the PSA oxygen - making group 1 to start producing oxygen. The oxygen supercharger 4 is in a closed state, and the emergency oxygen - making group 2 does not produce oxygen.

[0072] Step 2: The intake port of the compressor 11 of the PSA oxygen - making group 1 obtains air from the outside. After being pressurized, the high - pressure air passes through the intake port 121 of the switching valve 12 and is communicated with one of the outlet ports a122 and the molecular sieve tower a131, and the other outlet port b123 is communicated with the molecular sieve tower b132 and the return air port 124.

[0073] High-pressure air enters the molecular sieve tower a131 and is pressurized to the adsorption pressure. This process includes the pressurization of high-pressure air intake and the reverse pressurization of the molecular sieve tower b132. Among them, one air inlet and two air outlets of the switching valve 12 are connected for a very short period during the switching process. At this time of connection, the gas in the molecular sieve tower with high pressure will fill the molecular sieve tower with low pressure, that is, reverse pressurization is formed.

[0074] After the pressure of the molecular sieve tower a131 reaches the adsorption pressure, the molecular sieve selectively adsorbs nitrogen molecules in the high-pressure air, thereby separating oxygen and nitrogen. After the nitrogen molecules are adsorbed, the oxygen molecules flow out from the air outlet of the molecular sieve tower a131. When the air pressure in the molecular sieve tower a131 reaches the set pressure value and the adsorbed nitrogen reaches a certain saturation, it enters the process of pressure reduction and desorption. Through the switching of the switching valve 12, the adsorbed nitrogen in the molecular sieve tower a131 is discharged through the return air port 124 of the switching valve 12. At the same time, the molecular sieve tower a131 conducts a certain amount of reverse pressurization on the molecular sieve tower b132. This process is carried out alternately in cycles.

[0075] Step 3: The oxygen concentration monitor 154 in the PSA oxygen generation unit 1 monitors the oxygen concentration at the air outlet of the molecular sieve group 13 in real time and feeds back the signal to the master control module 6. When the oxygen concentration is lower than 90%, the master control module 6 controls the reversing valve 153 to act, and discharges the low-concentration oxygen together with nitrogen from the return air port of the switching valve 12 through the exhaust pipeline 152. When the oxygen concentration monitor 154 monitors that the outlet oxygen reaches more than 90%, it promptly feeds back the signal to the master control module 6, controls the reversing valve 153 to act, and transports the qualified oxygen into the low-pressure buffer tank 3.

[0076] Step 4: After the oxygen enters the low-pressure buffer tank 3 for caching, the low-pressure sensor 31 monitors the internal air pressure of the tank. When the internal pressure reaches the preset pressurization value, the low-pressure sensor 31 feeds back the signal to the master control module 6. The master control module 6 issues an instruction to start the oxygen booster 4 to pressurize the oxygen inside the low-pressure buffer tank 3 and then input it into the high-pressure oxygen storage tank 5. When the low-pressure sensor 31 monitors that the air pressure in the pressure buffer tank 3 reaches the set maximum safety value, it feeds back the signal to the master control module 6. The master control module 6 issues an instruction to the PSA oxygen generation unit 1 to pause oxygen generation until the internal air pressure decreases, and the PSA oxygen generation unit 1 will restart oxygen generation.

[0077] Step 5: The oxygen pressurized by the oxygen booster 4 enters the high-pressure oxygen storage tank 5 for storage. When the oxygen is not used temporarily and the internal pressure of the high-pressure oxygen storage tank 5 reaches the preset high pressure value, the high-pressure sensor 51 will feed back the signal to the master control module 6. The master control module 6 issues an instruction to turn off the operation of the oxygen booster 4. When the oxygen is used and the internal pressure decreases, the oxygen booster 4 restarts to work.

[0078] Step 6: Connect the portable oxygen supply device 7 to the filling device 8 at the outlet end of the high-pressure oxygen storage tank 5 through the high-pressure inflation joint 73 at the bottom for oxygen filling. After the oxygen filling is completed, simply disconnect the connection; the filling device 8 is in the form of a high-pressure quick-insert self-locking type, which allows air to pass through when connected to the high-pressure inflation joint 73, and the air flow is blocked after the connection is disconnected; the system can simultaneously fill multiple portable oxygen supply devices 7.

[0079] Step 7: When the oxygen user uses oxygen, connect the oxygen-saving outlet 72 of the portable oxygen supply device 7 to the oxygen inhalation tube. During normal breathing, the oxygen-saving outlet 72 controls the opening and closing of the internal components through the micro-negative pressure generated by the oxygen user's inhalation to achieve synchronous breathing-triggered pulsed oxygen supply.

[0080] Step 8: When an abnormal situation occurs and the PSA oxygen generation unit 1 fails to generate oxygen, oxygen can be generated by the emergency oxygen generation unit 2 and continue to be supplied to the low-pressure buffer tank 3.

[0081] According to an exemplary embodiment of the present invention, the emergency oxygen generation unit (2) can generate oxygen through two embodiments;

[0082] ① Oxygen generation by chemical reagent method: The oxygen generation water tank 2a1 of the chemical reagent oxygen generation group 2a contains pure water, and the two chambers of the reagent bin 2a2 are respectively filled with oxygen generation agent and catalyst. When oxygen generation is required, manually press the switch 2a25, and the baffle plates 2a24 at the bottoms of the oxygen generation agent bin 2a21 and the catalyst bin 2a22 open. The oxygen generation agent and the catalyst fall off from the discharge port 2a23 and enter the oxygen generation water tank 2a1, dissolve and fuse in water, and start to generate oxygen. After the oxygen generation agent and the catalyst enter the oxygen generation water tank 2a1, the baffle plate 2a24 automatically resets and closes. Exemplarily, the baffle plate 2a24 can be hinged, one end can be hinged and fixed on the box body, and the other end is a free end that abuts against the baffle. The reset can be achieved by a torsion spring, and the torsion spring can be fixed on the hinge shaft to keep the baffle plate 2a24 in the initial position. The oxygen generated by the chemical reaction of the oxygen generation agent and the catalyst in water passes through the oxygen filtration box a2a3, is filtered by the first filter element 2a32, and is output from the oxygen outlet joint a2a33 and enters the low-pressure buffer tank 3.

[0083] ② Oxygen generation by chemical oxygen candle method: The oxygen generation box 2b1 of the chemical oxygen candle oxygen generation group 2b is equipped with an oxygen candle body 2b2. When oxygen generation is required, manually press the starter 2b3 on the outer box body of the oxygen generation box 2b1. The starter 2b3 is internally connected to the oxygen candle body 2b2, and the front end generates heat by friction with the metal powder fuel inside and starts a chemical reaction. The heat released during the chemical reaction can cause the chlorate inside the oxygen candle body 2b2 to release oxygen; the oxygen passes through the oxygen filtration box b2b4 at the outlet of the oxygen generation box 2b1, is filtered by the second filter element 2b41, and is output from the oxygen outlet joint b2b42 and enters the low-pressure buffer tank 3.

[0084] The micro oxygen generation, storage, supply and conservation system of the present utility model and its implementation method mainly include a PSA oxygen generation group, an emergency oxygen generation group, a low-pressure buffer tank, an oxygen booster, a high-pressure oxygen storage tank, a master control module and a portable oxygen supply device, etc. The master control module can detect and control each functional module group, and intelligently control the working states of the oxygen generation system and the booster system by detecting the pressure, concentration and flow rate of the gas in the pipeline. The PSA oxygen generation group and the chemical oxygen generation group can generate oxygen in different ways. The output low-pressure oxygen enters the low-pressure buffer tank for temporary storage, and can become high-pressure oxygen after passing through the oxygen booster, and is stored in the high-pressure oxygen storage tank and filled into the portable oxygen supply device for oxygen users. This system can realize various forms such as oxygen generation, storage, supply and conservation, can meet the oxygen supply requirements in different scenarios, has reliable performance, simple operation, and low failure rate, and is an ideal device for medical oxygen generation in high-altitude areas or areas with underdeveloped transportation.

[0085] Although the embodiments of the present utility model have been shown and described, for those of ordinary skill in the art, it can be understood that these embodiments can be changed and element combinations can be made without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A small-scale oxygen production, storage and supply saving system, characterized by: include: PSA oxygen generator (1), emergency oxygen generator (2), low-pressure buffer tank (3), oxygen booster (4), high-pressure oxygen storage tank (5), filler (8) and portable oxygen supply device (7); The oxygen outlet interfaces of the PSA oxygen production group (1) and the emergency oxygen production group (2) are connected in parallel and then connected to the air inlet of the low-pressure buffer tank (3) through a first pipeline; The air outlet of the low-pressure buffer tank (3) is connected to the air inlet of the oxygen booster (4) via a second pipeline, and the air outlet of the oxygen booster (4) is connected to the air inlet of the high-pressure oxygen storage tank (5) via a third pipeline; The gas outlet of the high-pressure oxygen storage tank (5) is connected to the filler (8); The filler (8) is used to fill the portable oxygen supply device (7) with high-pressure oxygen.

2. The oxygen system according to claim 1, characterized in that: It also includes a master control module (6), which is respectively connected to the PSA oxygen production group (1), the emergency oxygen production group (2), the low-pressure buffer tank (3), the oxygen booster (4), and the high-pressure oxygen storage tank (5).

3. The oxygen system according to claim 2, characterized in that: A low-pressure sensor (31) is provided on the low-pressure buffer tank (3); a high-pressure sensor (51) is provided on the high-pressure oxygen storage tank (5); and an oxygen concentration monitor (154) is provided at the oxygen outlet of the PSA oxygen production group (1).

4. The oxygen system according to claim 1, characterized in that: The PSA oxygen production group (1) comprises a compressor (11), a switching valve (12) and a molecular sieve group (13); the molecular sieve group (13) comprises a molecular sieve tower a (131) and a molecular sieve tower b (132); The switching valve (12) comprises an air inlet (121), an air outlet a (122), an air outlet b (123) and an air return port (124); The air inlet (121) of the switching valve (12) is in communication with the air outlet of the compressor (11); The switching valve can switch between a first working state and a second working state; In the first working state, the gas outlet a (122) of the switching valve (12) is connected to the gas inlet end of the molecular sieve tower a (131); the gas outlet b (123) of the switching valve (12) is connected to the gas inlet end and the gas return port (124) of the molecular sieve tower b (132); In the second working state, the gas outlet b (123) of the switching valve (12) is connected to the gas inlet end of the molecular sieve tower b (132), and the gas outlet a (122) of the switching valve (12) is connected to the gas inlet end and the gas return port (124) of the molecular sieve tower a (131).

5. The oxygen system according to claim 4, characterized in that: The gas outlet ends of the molecular sieve tower a (131) and the molecular sieve tower b (132) are connected in parallel and are connected to the low-pressure buffer tank (3) through an oxygen supply pipeline (15); A one-way valve (151) is provided at the gas outlet end of the molecular sieve tower a (131) and the molecular sieve tower b (132), and a reversing valve (153) is provided on the oxygen supply pipeline (15), the gas outlet of the reversing valve (153) is connected to the low-pressure buffer tank, and the gas return port of the reversing valve (153) is connected to the exhaust pipeline (152).

6. The oxygen system according to claim 1, characterized in that: The emergency oxygen production group (2) is a chemical agent oxygen production group (2a); it includes an oxygen production water tank (2a1), a chemical agent bin (2a2) and an oxygen filter box a (2a3); The medicine bin (2a2) is connected to the oxygen-generating water tank (2a1), and the oxygen filter box a (2a3) is used to filter oxygen at the outlet of the oxygen-generating water tank (2a1).

7. The oxygen utilization system according to claim 6, characterized in that: The reagent bin (2a2) comprises an oxygen generator bin (2a21), a catalyst bin (2a22) and a discharge port (2a23); the oxygen generator bin (2a21) and the catalyst bin (2a22) are separated by a partition plate, and are respectively connected to the discharge port (2a23) via respective openable and closable baffle plates (2a24).

8. The oxygen utilization system according to claim 7, characterized in that: The feed inlet (2a12) of the oxygen-generating water tank (2a1) is sealedly connected to the discharge port (2a23) at the bottom of the medicine bin (2a2); and the oxygen outlet (2a13) of the oxygen-generating water tank (2a1) is sealedly connected to the box body (2a31) of the oxygen filter box a (2a3).

9. The oxygen utilization system according to claim 8, characterized in that: A recessed portion is formed on the box body of the oxygen-producing water tank (2a1), and a plurality of holes are formed at the bottom of the recessed portion, and the plurality of holes form an oxygen outlet (2a13) of the oxygen-producing water tank (2a1); The oxygen filter box a (2a3) comprises a box body (2a31), a first filter element (2a32) and an oxygen outlet connector a (2a33); a protrusion that matches the recessed portion is formed at the bottom of the box body (2a31); and a plurality of holes are formed on the bottom surface of the protrusion.

10. The oxygen utilization system according to claim 1, characterized in that: The emergency oxygen production group (2) is a chemical oxygen candle oxygen production group (2b); the chemical oxygen candle oxygen production group (2b) comprises an oxygen production box (2b1), an oxygen candle body (2b2), a starter (2b3) and an oxygen filter box b (2b4); The oxygen candle body (2b2) ​​is placed inside the oxygen production box (2b1); the starter is located outside the oxygen production box and is connected to the oxygen candle body (2b2) ​​via a wire; the oxygen filter box b (2b4) is placed at the gas outlet of the oxygen production box (2b1) and is sealed with each other; a second filter element (2b41) is provided inside the oxygen filter box b (2b4) and an oxygen outlet connector b (2b42) is provided on the top.

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