A backpack-type simple oxygen concentrator

Abstract

The utility model discloses a backpack-type simple oxygen concentrator, comprising a backpack box, a compressor, a filter and a mobile power supply; the backpack box is provided with an air inlet, an oxygen outlet and an exhaust gas outlet; the filter comprises a primary filter cartridge and a secondary filter cartridge, and a molecular sieve is provided in the secondary filter cartridge; the primary filter cartridge is provided with a first air inlet and a first exhaust portion, and the secondary filter cartridge is provided with a second air inlet and a second exhaust portion; the first exhaust portion and the second air inlet are connected, and the second exhaust portion discharges oxygen and is connected with the oxygen outlet; the air inlet of the compressor is connected with the air inlet or the first air inlet; when the air inlet of the compressor is connected with the first air inlet, the exhaust port of the compressor is connected with the exhaust gas outlet. The backpack-type simple oxygen concentrator of the utility model has a simple structure, realizes intermittent analysis through pipeline control, does not require complicated valve control, has low cost and low failure rate, is conducive to the further popularization of oxygen concentrators, and meets the use of more people.

Description

Technical Field

[0001] The utility model relates to the technical field of medical instruments or medical auxiliary equipment, in particular to a backpack-type simple oxygen concentrator. Background Art

[0002] Molecular sieve oxygen generator is a device used to extract oxygen from the air. Its working principle is based on molecular sieve technology, which uses the characteristics of molecular sieve materials, such as adsorption properties, to separate oxygen and other components in the air, such as nitrogen, carbon dioxide, etc. In this process, the molecular sieve material can selectively adsorb or filter nitrogen and other impurities, thereby extracting pure oxygen and obtaining high-purity oxygen.

[0003] The main function of molecular sieve oxygen generator is to provide high concentration of oxygen for medical, industrial, aerospace and other fields. In the industrial and aerospace fields, it can be used to provide oxygen to support the production process or provide oxygen supply under special circumstances. In the medical field, molecular sieve oxygen generator is often used to treat respiratory diseases and provide oxygen therapy.

[0004] With the research and development of molecular sieve oxygen concentrators, the manufacturing cost of molecular sieve oxygen concentrators has been reduced, and the size of molecular sieve oxygen concentrators has been diversified. Therefore, in the existing technology, molecular sieve oxygen concentrators are no longer exclusive to the aerospace and medical fields. In the existing technology, molecular sieve oxygen concentrators have entered ordinary households, which is beneficial to assist

[0005] With the research and development of molecular sieve oxygen concentrators and the continuous advancement of molecular sieve technology, the cost of molecular sieves has been reduced, and the manufacturing cost of molecular sieve oxygen concentrators has also been greatly reduced. In addition, the shapes and volumes of molecular sieve oxygen concentrators are becoming more and more diverse. Molecular sieve oxygen concentrators are no longer just exclusive equipment in the aviation or medical fields. Molecular sieve oxygen concentrators have entered rehabilitation institutions, general medical institutions, factories, community hospitals, laboratories, and ordinary families or individuals.

[0006] In the prior art, oxygen concentrators are used by ordinary families or individuals mainly for assisted breathing, such as for the elderly, people in plateau areas, mountain climbers, and people working in areas with severe environmental pollution.

[0007] In the prior art, oxygen generators usually produce oxygen while analyzing it, and are usually controlled by complex valves or multi-directional distribution valves. The control process is cumbersome, the valves are easily damaged, and the cost is high, which restricts the use of molecular sieve oxygen generators. Utility Model Content

[0008] In order to overcome at least one of the defects of the above-mentioned prior art, the utility model provides a backpack-type simple oxygen concentrator with a simple structure. It can realize intermittent analysis through pipeline control, does not require complicated valve control, has low cost and low failure rate, and is conducive to the further popularization of oxygen concentrators to meet the needs of more people.

[0009] The technical solution adopted by the utility model to solve the problem is:

[0010] A backpack-type simple oxygen concentrator comprises a backpack box, a compressor installed in the backpack box, a filter and a mobile power supply for supplying power to the compressor at least;

[0011] The backpack box is provided with an air inlet, an oxygen outlet and an exhaust gas outlet;

[0012] The filter comprises a primary filter cartridge and a secondary filter cartridge, wherein a molecular sieve is arranged in the secondary filter cartridge; a first air inlet and a first air outlet are arranged on the primary filter cartridge, and a second air inlet and a second air outlet are arranged on the secondary filter cartridge; the first air outlet is connected to the second air inlet, and the second air outlet discharges oxygen and is connected to the oxygen outlet;

[0013] The air inlet of the compressor is in communication with the air inlet or the first air intake portion;

[0014] When the air inlet of the compressor is in communication with the air inlet, the exhaust port of the compressor is in communication with the first air inlet;

[0015] When the air inlet of the compressor is communicated with the first air inlet portion, the air outlet of the compressor is communicated with the exhaust gas outlet.

[0016] Preferably, a first air duct and a second air duct are connected to the air inlet of the compressor, the other ends of the first air duct and the second air duct are respectively connected to the air inlet and the first air intake part, and a first solenoid valve and a second solenoid valve are respectively provided on the first air duct and the second air duct;

[0017] A third air duct and a fourth air duct are connected to the exhaust port of the compressor, the other ends of the third air duct and the fourth air duct are connected to the exhaust gas outlet and the first air intake part respectively, and a third solenoid valve and a fourth solenoid valve are respectively provided on the third air duct and the fourth air duct; the first solenoid valve, the second solenoid valve, the third solenoid valve and the fourth solenoid valve are all powered by the mobile power supply.

[0018] Preferably, the primary filter cartridge is sleeved outside the secondary filter cartridge, and the primary filter cartridge comprises a first cartridge body, and a first cartridge bottom and a first cartridge cover respectively connected to the bottom end and the top end of the first cartridge body;

[0019] A plurality of first through holes are arranged on the bottom of the first cylinder, and a first interlayer area communicating with the first through holes is arranged below the bottom of the first cylinder, the first interlayer area and the first through holes form the first air inlet, and the exhaust port of the compressor and the air inlet of the compressor are both communicated with the first interlayer area;

[0020] The first cartridge cover is provided with a plurality of second through holes, and the second through holes are communicated with the secondary filter cartridge.

[0021] Preferably, primary filter particles are filled between the first cartridge bottom and the first cartridge cover.

[0022] Preferably, the secondary filter cartridge comprises a second cartridge body and a second cartridge bottom and a second cartridge cover respectively connected to the bottom end and the top end of the second cartridge body; a partition is provided between the second cartridge bottom and the second cartridge cover;

[0023] The second cylinder cover and the partition plate are respectively provided with a plurality of third through holes and a fourth through hole;

[0024] The third through hole is connected to the primary filter cartridge, a second interlayer area is formed between the partition and the second cartridge bottom, the fourth through hole is connected to the second interlayer area, the oxygen outlet is connected to the second interlayer area, and the molecular sieve is arranged between the second cartridge cover and the partition.

[0025] Preferably, the backpack box includes a box body and a box cover, the compressor, the filter and the mobile power source are all placed in the box body; the box cover sealing cover is arranged at the upper opening of the box cover;

[0026] An outer connecting wall and an inner connecting wall are arranged on the side of the box cover facing the box body, and the outer connecting wall is sealed and fixedly connected to the box body;

[0027] A third interlayer area is formed between the side of the box cover facing the box body and the first cylinder cover, and the second through hole is connected to the third interlayer area;

[0028] A fourth interlayer area is formed between the side of the box cover facing the box body and the second cylinder cover, and the third through hole is connected to the fourth interlayer area;

[0029] The end of the inner connecting wall away from the inner side surface of the box cover is pressed against the filter and connects the third interlayer area and the fourth interlayer area.

[0030] Preferably, the box body includes a first box body and a second box body connected in sequence, the first box body is located at the bottom of the second box body, the compressor and the mobile power supply are both placed in the first box body, the filter is placed in the second box body, the second box body has a box bottom cover, and the first cylinder bottom and the bottom cover form the first interlayer area.

[0031] Preferably, a circuit board is disposed in the first housing, the circuit board is electrically connected to the mobile power source, and a control switch is disposed on an outer surface of the first housing, the control switch is electrically connected to the circuit board.

[0032] Preferably, the backpack box has an arc-shaped cross-section that is ergonomically adapted to the human back. A shoulder strap is provided on the side of the backpack box facing the human back. The air inlet, oxygen outlet and exhaust gas outlet are all provided on the side of the backpack box away from the human back when the backpack is carried on the back.

[0033] In summary, the backpack-type simple oxygen concentrator provided by the utility model has the following technical effects:

[0034] 1. The air inlet of the compressor is connected to the air inlet or the first air inlet. When the air inlet of the compressor is connected to the air inlet, the exhaust port of the compressor is connected to the first air inlet to achieve oxygen production. When the air inlet of the compressor is connected to the first air inlet, the exhaust port of the compressor is connected to the exhaust gas outlet to achieve molecular sieve analysis. This backpack-type simple oxygen generator has the functions of oxygen production and analysis, and it is intermittent analysis, that is, the analysis time is controlled to start and the analysis time is controlled according to the needs, which prolongs the service life of the molecular sieve and ensures the oxygen production efficiency.

[0035] 2. The backpack-type simple oxygen concentrator of the present technical solution has a simple structure, does not require a distribution valve with a complex structure to achieve control, has low cost, and has a low failure rate when the oxygen concentrator is working, which is conducive to the further popularization of oxygen concentrators.

[0036] 3. The primary filter cartridge and the secondary filter cartridge of the oxygen generator are set to achieve multi-stage filtration, remove water vapor and impurities in the air, extend the service life of the molecular sieve, and obtain high-purity oxygen. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 The utility model is a structural schematic diagram of an embodiment of a backpack-type simple oxygen concentrator.

[0038] Figure 2 for Figure 1 Schematic diagram of the internal structure.

[0039] Figure 3 for Figure 2 Schematic diagram of the cross section along AA direction.

[0040] Figure 4for Figure 2 Schematic diagram of the cross section along the BB direction.

[0041] The meanings of the reference numerals are as follows:

[0042] 10. Backpack box; 1. Box cover; 11. External connecting wall; 12. Internal connecting wall; 13. Third interlayer area; 14. Fourth interlayer area; 2. First cylinder body; 20. Filter; 21. Primary filter cartridge; 22. First cylinder bottom; 23. First interlayer area; 24. First cylinder cover; 25. Primary filter particles; 26. Secondary filter cartridge; 27. Second cylinder cover; 28. Second cylinder bottom; 29. ​​Partition; 201. Molecular sieve; 202. Second interlayer area; 3. First box body; 4. Air inlet; 5. Exhaust gas outlet; 6. Oxygen outlet; 7. Control button; 8. Compressor; 81. First air duct; 82. First solenoid valve; 83. Second air duct; 84. Second solenoid valve; 85. Fourth air duct; 86. Fourth solenoid valve; 87. Third air duct; 88. Third solenoid valve; 9. Mobile power supply; 91. Battery cover; 92. Circuit board. DETAILED DESCRIPTION

[0043] For better understanding and implementation, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0044] In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0045] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

[0046] See also Figure 1 and Figure 2 The utility model discloses a structural schematic diagram of an embodiment of a backpack-type simple oxygen concentrator.

[0047] A backpack-type simple oxygen concentrator comprises a backpack box 10, a compressor 8 installed in the backpack box 10, a filter 20 and a mobile power supply 9 for supplying power to at least the compressor 8, wherein the mobile power supply supplies power to the compressor to ensure the compressor works.

[0048] The backpack box 10 is provided with an air inlet 4, an oxygen outlet 6 and an exhaust gas outlet 5. The air inlet inputs the air to be filtered, the oxygen outlet discharges the prepared oxygen and delivers the oxygen to the oxygen-using position, and the exhaust gas outlet discharges the exhaust gas remaining in the filter after the filter produces oxygen.

[0049] The filter 20 includes a primary filter cartridge 21 and a secondary filter cartridge 26. A molecular sieve 201 is disposed in the secondary filter cartridge 26, and the molecular sieve separates oxygen molecules from the mixed gas to prepare high-purity oxygen.

[0050] The primary filter cartridge 21 is provided with a first air intake and a first exhaust portion, and the secondary filter cartridge 26 is provided with a second air intake and a second exhaust portion. The first exhaust portion is connected to the second air intake portion, and the second exhaust portion discharges oxygen and is connected to the oxygen outlet 6.

[0051] The air inlet of the compressor 8 is connected to the air inlet 4 or the first air inlet. When the air inlet of the compressor 8 is connected to the air inlet 4, the exhaust port of the compressor 8 is connected to the first air inlet, the compressor delivers air to the filter, and the filter prepares oxygen. When the air inlet of the compressor 8 is connected to the first air inlet, the exhaust port of the compressor 8 is connected to the exhaust gas outlet 5, the compressor reversely sucks the gas in the filter to reduce the pressure in the filter, and analyzes the filter, and reversely discharges the exhaust gas (nitrogen, carbon dioxide, etc.) adsorbed in the filter, to analyze the molecular sieve, so that the molecular sieve is revived, and at the same time, the filter structure in the first filter cartridge 21 can be backwashed and revived.

[0052] In the above scheme, in a backpack simple oxygen concentrator, the mobile power supply supplies power to the compressor, the compressor compresses air and delivers it to the filter, the filter filters the air to obtain oxygen, and the backpack simple oxygen concentrator produces oxygen. Alternatively, the compressor works to reversely suck the primary filter cartridge 21 and the secondary filter cartridge 26, reduce the pressure inside the primary filter cartridge 21 and the secondary filter cartridge 26, and realize the analysis, backwashing or revival of the filter combination inside the primary filter cartridge 21 and the secondary filter cartridge 26.

[0053] In the above-mentioned backpack-type simple oxygen concentrator, when the compressor reversely sucks the gas in the primary filter cartridge 21 and the secondary filter cartridge 26, most of the nitrogen in the secondary filter cartridge is sucked out, and the sucked nitrogen passes through the primary filter cartridge 21 to backwash and revive the filter structure in the primary filter cartridge 21.

[0054] In the above-mentioned scheme, a simple backpack oxygen concentrator draws gas from different positions through a compressor to achieve oxygen production and analysis. Oxygen production and analysis are achieved through different working states of the compressor, which simplifies the structure of the entire oxygen concentrator, avoids the use of a large number of complex valves, such as gas distribution valves, pilot valves, etc., avoids the use of motors, etc. to achieve complex control of valves, effectively reduces the manufacturing cost of the oxygen concentrator, and effectively reduces the probability of failure of the oxygen concentrator during operation.

[0055] In the above scheme, in a simple backpack oxygen concentrator, the air inlet of the compressor is connected to the air inlet or the first air inlet. When the air inlet of the compressor is connected to the air inlet, the exhaust port of the compressor is connected to the first air inlet to achieve oxygen production. When the air inlet of the compressor is connected to the first air inlet, the exhaust port of the compressor is connected to the exhaust gas outlet to achieve molecular sieve analysis. This simple backpack oxygen concentrator has oxygen production and analysis functions, and it is intermittent analysis, that is, the analysis time is started and the analysis duration is controlled according to needs, thereby extending the service life of the molecular sieve and ensuring the oxygen production efficiency.

[0056] In the above scheme, a backpack-type simple oxygen generator is provided with a primary filter cartridge 21 and a secondary filter cartridge 26 to achieve multi-stage filtration, remove water vapor and impurities in the air, extend the service life of the molecular sieve, and obtain high-purity oxygen. A molecular sieve is provided in the secondary filter cartridge 26, and the secondary filter cartridge achieves primary filtration, reduces impurities in the gas entering the secondary filter cartridge, especially dust, water vapor, etc., extends the service life of the molecular sieve, and improves the oxygen production efficiency of the molecular sieve.

[0057] In the technical solution of the utility model, the air inlet of the compressor 8 is connected with a first air duct 81 and a second air duct 83. The other ends of the first air duct 81 and the second air duct 83 are respectively connected with the air inlet 4 and the first air intake part, and the first air duct 81 and the second air duct 83 are respectively provided with a first solenoid valve 82 and a second solenoid valve 84.

[0058] The exhaust port of the compressor 8 is connected to a third air duct 87 and a fourth air duct 85. The other ends of the third air duct 87 and the fourth air duct 85 are connected to the exhaust gas outlet 5 and the first air intake portion, respectively. The third air duct 87 and the fourth air duct 85 are provided with a third solenoid valve 88 and a fourth solenoid valve 86, respectively.

[0059] The first solenoid valve 82 , the second solenoid valve 84 , the third solenoid valve 88 and the fourth solenoid valve 86 are all powered by the mobile power source 9 .

[0060] In the above-mentioned scheme, a backpack-type simple oxygen concentrator is provided, through the setting of the first air duct 81, the second air duct 83, the third air duct 87 and the fourth air duct 85 and the first solenoid valve 82, the second solenoid valve 84, the third solenoid valve 88 and the fourth solenoid valve 86, to control the position of the compressor suction gas and realize the control of oxygen production and molecular sieve analysis.

[0061] In the above scheme, the first solenoid valve 82 and the fourth solenoid valve 86 are opened, the first air duct 81 and the fourth air duct 85 are opened, and the compressor inputs high-pressure air into the filter. The high-pressure air passes through the primary filter cartridge 21 and the secondary filter cartridge 26 in sequence, and oxygen is discharged from the second exhaust part of the secondary filter cartridge 26. The second exhaust part is connected to the oxygen outlet 6, and the oxygen discharged from the second exhaust part is transported to the oxygen use position through the oxygen outlet 6.

[0062] In the above scheme, the compressor works continuously, and high-pressure air is continuously input into the primary filter cartridge 21 and the secondary filter cartridge 26. The oxygen is discharged from the second exhaust part on the secondary filter cartridge 26, so that oxygen use and oxygen production are carried out simultaneously. Of course, if oxygen is not needed temporarily, that is, oxygen is not discharged from the oxygen outlet temporarily, the oxygen separated by the secondary filter cartridge 26 will be temporarily stored in the secondary filter cartridge 26, and the air pressure in the secondary filter cartridge 26 will increase slightly. When the air pressure in the secondary filter cartridge 26 increases to a certain value, the compressor can be temporarily turned off to suspend oxygen production, so as to avoid gas leakage caused by excessive air pressure in the secondary filter cartridge 26, and to avoid damaging the sealing performance of the secondary filter cartridge 26 or the oxygen generator as a whole. The oxygen temporarily stored in the secondary filter cartridge 26 can be used directly. When the oxygen in the secondary filter cartridge 26 is exhausted or the gas pressure in the secondary filter cartridge 26 drops to a certain value, the compressor can be started again to start the oxygen production operation.

[0063] In the above scheme, the second solenoid valve 84 and the third solenoid valve 88 are opened, the second air duct 83 and the third air duct 87 are connected, the compressor draws gas from the filter and discharges it through the waste gas outlet 5, so as to draw out the waste gas whose main component is nitrogen from the primary filter cartridge 21 and the secondary filter cartridge 26, and realize the analysis and revival of the primary filter cartridge 21 and the secondary filter cartridge 26. The compressor draws gas from the filter, the air pressure in the filter is reduced, and the gas absorbed in the filter is released, so as to realize the analysis and revival of the filter.

[0064] In this solution, the solenoid valve is used to control the conduction state of the pipeline, realize the compressor suction gas position control, and realize the control of oxygen production and analysis of the oxygen generator. The control process has a simple structure, low cost, concise control process and low failure rate.

[0065] Based on the above scheme, by controlling each solenoid valve, the oxygen production and analysis process of the oxygen concentrator are carried out alternately as needed or set, such as analysis after a period of oxygen production, or when the oxygen concentrator temporarily does not need to produce or output oxygen.

[0066] In the technical solution of the present utility model, the primary filter cartridge 21 is sleeved on the outside of the secondary filter cartridge 26, which reduces the volume of the oxygen generator, maximizes the utilization of the internal space of the oxygen generator, increases the cross-sectional area of ​​the primary filter cartridge 21 and the secondary filter cartridge 26, increases the cross-sectional area of ​​the filter structure inside the primary filter cartridge 21 and the secondary filter cartridge 26, and increases the oxygen production efficiency and instantaneous oxygen production.

[0067] The primary filter cartridge 21 has a first cartridge body 2, and a first cartridge bottom 22 and a first cartridge cover 24 respectively connected to the bottom and top ends of the first cartridge body 2. The first cartridge bottom 22 is provided with a plurality of first through holes, and a first interlayer area 23 communicating with the first through holes is provided below the first cartridge bottom 22. The first interlayer area 23 and the first through holes form the first air inlet portion, and the exhaust port of the compressor 8 and the air inlet of the compressor 8 are both communicated with the first interlayer area 23. The first cartridge cover 24 is provided with a plurality of second through holes, and the second through holes are communicated with the secondary filter cartridge 26.

[0068] Based on the above technical solution, the setting of the first interlayer area, the first cylinder bottom 22 and the first through holes arranged on the first cylinder bottom 22 can increase the instantaneous air intake of the first air intake portion, so that after the compressor delivers high-pressure air to the first interlayer area, it can quickly diffuse and pass through the first cylinder bottom through a large number of first through holes and enter the primary filter cylinder 21, increasing the instantaneous air intake on the primary filter cylinder 21, and the high-pressure air can enter the primary filter cylinder 21 more evenly, improving the filtering efficiency of the primary filter cylinder 21 for gas. The gas passing through the primary filter cylinder 21 is quickly discharged from the second through hole on the first cylinder cover 24 and enters the secondary filter cylinder 26.

[0069] In this solution, the first cartridge bottom 22 and the first cartridge cover 24 are filled with primary filter particles 25, which include one or a mixture of activated carbon particles and filter adsorption particles. The primary filter particles 25 are mainly used to filter impurities in the air, such as lint, dust, dirt, water vapor, etc. After the impurities in the air are filtered by the primary filter particles 25, the gas entering the molecular sieve is relatively clean, which prolongs the service life of the molecular sieve and the oxygen production efficiency of the molecular sieve.

[0070] In this solution, the first air inlet portion is arranged at the bottom of the primary filter cartridge 21. After the air enters the primary filter cartridge 21, as the air goes up, impurities in the air, such as lint, dust, dirt, water vapor, etc., are mostly blocked in the primary filter particles 25 in the lower half of the primary filter cartridge 21 due to their large weight, while the primary filter particles 25 in the upper half of the primary filter cartridge 21 can remain relatively clean. In this way, the primary filter particles 25 in the upper half of the primary filter cartridge 21 can be further filtered again by the relatively clean air, thereby improving the cleanliness of the air passing through the primary filter cartridge 21.

[0071] When the compressor realizes the analysis of the oxygen generator, the nitrogen in the molecular sieve is transported in reverse, enters from the top of the primary filter cartridge 21, and is output from the bottom of the primary filter cartridge 21, so that the primary filter particles 25 in the primary filter cartridge 21 can be backwashed. Originally, when oxygen is produced, most of the dust in the primary filter particles 25 in the lower half of the primary filter cartridge 21 will be carried out by the reverse flowing nitrogen and output from the bottom of the primary filter cartridge 21.

[0072] In this solution, the secondary filter cartridge 26 has a second cartridge body and a second cartridge bottom 28 and a second cartridge cover 27 connected to the bottom and top of the second cartridge body, respectively. A partition plate 29 is provided between the second cartridge bottom 28 and the second cartridge cover 27.

[0073] The second cartridge cover 27 and the partition plate 29 are respectively provided with a plurality of third through holes and a fourth through hole. The third through hole is communicated with the primary filter cartridge 21. A second interlayer area 202 is formed between the partition plate 29 and the second cartridge bottom 28, the fourth through hole is communicated with the second interlayer area 202, and the oxygen outlet 6 is communicated with the second interlayer area 202. The molecular sieve 201 is arranged between the second cartridge cover 27 and the partition plate 29.

[0074] Based on the above scheme, the clean air that passes through the primary filter cartridge 21 and is discharged from the second through hole on the first cartridge cover 24 of the primary filter cartridge 21 enters the secondary filter cartridge 26 through the third through hole on the second cartridge cover 27, and is filtered by the molecular sieve in the secondary filter cartridge 26. The air enters the secondary filter cartridge 26, and as the airflow goes down, oxygen passes through the molecular sieve, and other gases in the air, such as nitrogen and carbon dioxide, are absorbed by the molecular sieve and retained in the molecular sieve. Due to the airflow going up, nitrogen, carbon dioxide, etc. are mainly retained in the molecular sieve in the upper half of the secondary filter cartridge 26, while oxygen enters the lower half of the space of the secondary filter cartridge 26, so as to separate the oxygen and also realize oxygen storage.

[0075] Based on the above scheme, in order to increase the storage capacity of oxygen, a partition 29 is provided, and a second interlayer area 202 is formed between the partition and the second cylinder bottom 28. Oxygen is stored in the second interlayer area 202. When a large amount of oxygen is needed, the oxygen stored in the second interlayer area 202 can be quickly discharged to meet a large instantaneous oxygen demand.

[0076] When oxygen is not needed temporarily, the oxygen generator continues to produce oxygen, and the produced oxygen is first stored in the second interlayer area 202. After the pressure in the second interlayer area 202 increases to a certain value, if the oxygen generator continues to produce oxygen, the oxygen will be stored in the molecular sieve in the lower half of the secondary filter cartridge 26. When using oxygen, the oxygen in the second interlayer area 202 is first exhausted and used, and at the same time, the oxygen in the molecular sieve in the lower half of the secondary filter cartridge 26 will flow downward and enter the second interlayer area 202.

[0077] During analysis, the compressor sucks the gas in the secondary filter cartridge 26, and the residual oxygen in the second interlayer area 202 and the oxygen in the molecular sieve in the lower half of the secondary filter cartridge 26 will go up to achieve backwashing of the molecular sieve. At the same time, the nitrogen, carbon dioxide and other gases adsorbed in the molecular sieve will be desorbed and precipitated from the molecular sieve to achieve analysis and resurrection of the molecular sieve. The molecular sieve has a good analysis effect, which extends the service life of the molecular sieve and ensures the oxygen production efficiency of the molecular sieve.

[0078] In this solution, the backpack box 10 includes a box body and a box cover 1, and the compressor 8, the filter 20 and the mobile power supply 9 are all placed in the box body. The sealing cover of the box cover 1 is arranged at the upper opening of the box cover 1.

[0079] An outer connecting wall 11 and an inner connecting wall 12 are provided on the side of the box cover 1 facing the box body, and the outer connecting wall 11 is sealed and fixedly connected to the box body.

[0080] A third sandwich area 13 is formed between the side of the box cover 1 facing the box body and the first cylinder cover 24 , and the second through hole is communicated with the third sandwich area 13 .

[0081] A fourth interlayer area 14 is formed between the side of the box cover 1 facing the box body and the second cylinder cover 27 , and the third through hole is communicated with the fourth interlayer area 14 .

[0082] The end of the inner connecting wall 12 away from the inner side surface of the box cover 1 presses against the filter 20 and connects the third interlayer area 13 and the fourth interlayer area 14 .

[0083] Based on the above technical solution, the setting of the box cover 1 realizes the fixation and installation of the primary filter cartridge and the secondary filter cartridge in the box body, avoiding the problems of shaking of the primary filter cartridge and the secondary filter cartridge during the use of the oxygen generator.

[0084] In the above scheme, the third interlayer area 13 and the fourth interlayer area 14 are provided to increase the connection area between the first exhaust part and the second air intake part, increase the efficiency of the gas entering the secondary filter cartridge through the primary filter cartridge, improve the instantaneous flow rate of the gas, improve the oxygen production efficiency, and at the same time ensure that the intake air can enter the molecular sieve in the secondary filter cartridge more evenly, improve the utilization rate of the molecular sieve in the secondary filter cartridge, and improve the oxygen production efficiency.

[0085] In this solution, the box body includes a first box body 3 and a second box body connected in sequence, and the first box body 3 is located at the bottom of the second box body. The compressor 8 and the mobile power supply 9 are both placed in the first box body 3, and the filter 20 is placed in the second box body. The second box body has a box bottom cover, and the first cylinder bottom 22 and the bottom cover form the first interlayer area 23.

[0086] In the above scheme, the first box body 3 and the second box body are respectively used to install the compressor 8, the mobile power supply 9 and the filter 20, so as to realize partition installation, facilitate the installation layout and installation operation of each part, increase the filter area of ​​the filter, and improve the filtering efficiency. At the same time, it is also convenient to repair and maintain the compressor 8, the mobile power supply 9 and the filter 20. A battery cover plate 91 is set on the top of the first box body to further fix and install the mobile power supply. On the one hand, it ensures the installation of the mobile power supply, and on the other hand, it realizes heat insulation to prevent the heat generated by the mobile power supply and the compressor from affecting the temperature and air pressure in the filter, and avoids affecting the gas filtering efficiency in the filter.

[0087] In this solution, a circuit board 92 is provided in the first box body 3, and the circuit board 92 is electrically connected to the mobile power supply 9. A control switch is provided on the outer surface of the first box body 3, and the control switch is electrically connected to the circuit board 92. The circuit board 92 can be a circuit board in the prior art that can meet the requirements of this solution. The circuit board 92 of this solution includes a switching circuit and a voltage control circuit to control the working state of the compressor, to control the output air pressure of the compressor, and to control the on and off of each solenoid valve. The circuit board also includes a charging circuit to control the charging of the mobile power supply 9, so as to realize the charging and replenishing operations of the mobile power supply 9. A control switch is provided on the outer surface of the first box body 3, so that the operator can operate and control the oxygen concentrator when it is carried on the back, which is simple and convenient to operate.

[0088] In this solution, the cross section of the backpack box 10 is arc-shaped, which is adapted to the human back engineering. The side of the backpack box 10 facing the back of the human body is provided with a shoulder strap, which is suitable for carrying. The air inlet 4, the oxygen outlet 6 and the exhaust gas outlet 5 are all arranged on the side of the backpack box 10 away from the back of the human body, which is convenient for pipe connection and air suction from the outside, or exhaust gas release to the outside.

[0089] The technical means disclosed in the solution of the utility model are not limited to the technical means disclosed in the above-mentioned implementation mode, but also include technical solutions composed of any combination of the above technical features. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the utility model, and these improvements and modifications are also regarded as the protection scope of the utility model.

Claims

1. A backpack-type simple oxygen concentrator, characterized in that: It comprises a backpack box, a compressor installed in the backpack box, a filter and a mobile power supply for supplying power to the compressor at least; The backpack box is provided with an air inlet, an oxygen outlet and an exhaust gas outlet; The filter comprises a primary filter cartridge and a secondary filter cartridge, wherein a molecular sieve is arranged in the secondary filter cartridge; a first air inlet and a first air outlet are arranged on the primary filter cartridge, and a second air inlet and a second air outlet are arranged on the secondary filter cartridge; the first air outlet is connected to the second air inlet, and the second air outlet discharges oxygen and is connected to the oxygen outlet; The air inlet of the compressor is in communication with the air inlet or the first air intake portion; When the air inlet of the compressor is in communication with the air inlet, the exhaust port of the compressor is in communication with the first air inlet; When the air inlet of the compressor is communicated with the first air inlet portion, the air outlet of the compressor is communicated with the exhaust gas outlet.

2. The backpack-type simple oxygen concentrator according to claim 1, characterized in that: The air inlet of the compressor is connected to a first air duct and a second air duct, the other ends of the first air duct and the second air duct are respectively connected to the air inlet and the first air intake part, and the first air duct and the second air duct are respectively provided with a first solenoid valve and a second solenoid valve; A third air duct and a fourth air duct are connected to the exhaust port of the compressor, the other ends of the third air duct and the fourth air duct are connected to the exhaust gas outlet and the first air intake part respectively, and a third solenoid valve and a fourth solenoid valve are respectively provided on the third air duct and the fourth air duct; the first solenoid valve, the second solenoid valve, the third solenoid valve and the fourth solenoid valve are all powered by the mobile power supply.

3. The backpack-type simple oxygen concentrator according to claim 1, characterized in that: The primary filter cartridge is sleeved outside the secondary filter cartridge, and the primary filter cartridge comprises a first cartridge body, and a first cartridge bottom and a first cartridge cover respectively connected to the bottom end and the top end of the first cartridge body; A plurality of first through holes are arranged on the bottom of the first cylinder, and a first interlayer area communicating with the first through holes is arranged below the bottom of the first cylinder, the first interlayer area and the first through holes form the first air inlet, and the exhaust port of the compressor and the air inlet of the compressor are both communicated with the first interlayer area; The first cartridge cover is provided with a plurality of second through holes, and the second through holes are communicated with the secondary filter cartridge.

4. The backpack-type simple oxygen concentrator according to claim 3, characterized in that: The first cartridge bottom and the first cartridge cover are filled with primary filter particles.

5. The backpack-type simple oxygen concentrator according to claim 3, characterized in that: The secondary filter cartridge comprises a second cartridge body, and a second cartridge bottom and a second cartridge cover respectively connected to the bottom end and the top end of the second cartridge body; a partition is arranged between the second cartridge bottom and the second cartridge cover; The second cylinder cover and the partition plate are respectively provided with a plurality of third through holes and a fourth through hole; The third through hole is connected to the primary filter cartridge, a second interlayer area is formed between the partition and the second cartridge bottom, the fourth through hole is connected to the second interlayer area, the oxygen outlet is connected to the second interlayer area, and the molecular sieve is arranged between the second cartridge cover and the partition.

6. The backpack-type simple oxygen concentrator according to claim 5, characterized in that: The backpack box includes a box body and a box cover, the compressor, the filter and the mobile power supply are all placed in the box body; the box cover sealing cover is arranged at the upper opening of the box cover; An outer connecting wall and an inner connecting wall are arranged on the side of the box cover facing the box body, and the outer connecting wall is sealed and fixedly connected to the box body; A third interlayer area is formed between the side of the box cover facing the box body and the first cylinder cover, and the second through hole is connected to the third interlayer area; A fourth interlayer area is formed between the side of the box cover facing the box body and the second cylinder cover, and the third through hole is connected to the fourth interlayer area; The end of the inner connecting wall away from the inner side surface of the box cover is pressed against the filter and connects the third interlayer area and the fourth interlayer area.

7. The backpack-type simple oxygen concentrator according to claim 6, characterized in that: The box body includes a first box body and a second box body connected in sequence, the first box body is located at the bottom of the second box body, the compressor and the mobile power supply are both placed in the first box body, the filter is placed in the second box body, the second box body has a box bottom cover, and the first cylinder bottom and the bottom cover form the first interlayer area.

8. The backpack-type simple oxygen concentrator according to claim 7, characterized in that: A circuit board is disposed in the first box body, and the circuit board is electrically connected to the mobile power source. A control switch is disposed on the outer surface of the first box body, and the control switch is electrically connected to the circuit board.

9. The backpack-type simple oxygen concentrator according to claim 1, characterized in that: The cross-section of the backpack box is arc-shaped and adapts to the ergonomics of the human back. A shoulder strap is arranged on the side of the backpack box facing the human back. The air inlet, oxygen outlet and exhaust gas outlet are all arranged on the side of the backpack box away from the human back.

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