VRAC vacuum regeneration cycle adsorption type oxygen generator

Abstract

The invention relates to the technical field of oxygen generators, in particular to a VRAC vacuum regeneration cycle adsorption type oxygen generator which comprises a shell, an oxygen generation assembly arranged in the shell, a winding mechanism and a sealing mechanism. By arranging the sealing mechanism composed of the two-way lead screw, the sliding block and the arc-shaped block, the arc-shaped block can be precisely attached to the external connection pipe to achieve sealing, and therefore the effects of improving the sealing reliability of a pipeline connector, avoiding oxygen leakage and eliminating potential safety hazards are achieved; the winding mechanism with the pressing rod, the elastic piece and the limiting structure is arranged, the pressing rod presses and fixes one end of the external pipe and then winds the external pipe, and meanwhile, the positioning effect of the limiting block and the limiting groove is matched, so that the effects that the external pipe is stored in order, winding, bending and damage are avoided, the service life of the pipeline is prolonged, the storage space is saved, and the portability of equipment is improved are achieved.

Description

Technical Field

[0001] This invention relates to the field of oxygen generator technology, specifically to a VRAC vacuum regeneration cycle adsorption oxygen generator. Background Technology

[0002] With the increasing demand for portable and efficient oxygen generators in the healthcare sector, vacuum regenerative adsorption oxygen generators, thanks to their high-efficiency oxygen production characteristics based on the molecular sieve adsorption separation principle, are widely used in home care, outdoor work, and primary healthcare settings. However, existing oxygen generators still face many problems that urgently need to be addressed in practical applications.

[0003] Regarding pipeline sealing, traditional oxygen concentrators often use simple threaded connections or rubber ring seals for their oxygen delivery pipeline interfaces, resulting in poor sealing reliability. Oxygen leaks easily occur after prolonged use or even slight vibrations, reducing the efficiency of the oxygen concentrator and posing safety hazards. Furthermore, existing equipment generally lacks dedicated winding and storage mechanisms for the pipelines. When not in use, the external oxygen delivery pipes are prone to tangling, bending, or even breakage, affecting the pipeline's lifespan and occupying additional storage space, hindering the portable storage of the equipment. Based on these shortcomings of existing technologies, there is an urgent need to develop a VRAC vacuum regeneration circulating adsorption oxygen concentrator with reliable sealing, convenient winding and storage, and higher oxygen production stability to overcome the deficiencies of current technologies. Summary of the Invention

[0004] The purpose of this invention is to provide a VRAC vacuum regeneration cycle adsorption oxygen generator to solve the problems mentioned in the background art.

[0005] The technical solution adopted by this application to solve its technical problem is: VRAC vacuum regeneration cycle adsorption oxygen generator, including: a shell, an oxygen generating component is provided inside the shell, and also includes: a winding mechanism and a sealing mechanism;

[0006] The winding mechanism is disposed on the side wall of the outer shell. The winding mechanism includes a fixed shaft fixedly disposed on the side wall of the outer shell, a rotating disk rotatably disposed on the fixed shaft, a winding groove is provided on the rotating disk, and a pressure rod is movably disposed in the winding groove. The winding mechanism is used to wind up and seal the pipeline interface.

[0007] The sealing mechanism is located at the front end of the housing. The sealing mechanism includes a fixing block fixedly installed at the front end of the housing. The fixing block has a groove, and sliding blocks are symmetrically slidably installed in the groove. The sealing mechanism is used to seal the pipeline interface during use.

[0008] Preferably, the oxygen generating assembly includes an oxygen storage tank, a molecular sieve bed, a solenoid valve, an air filter, a compressor, a flow controller, and a fan, all of which are located within the outer shell cavity.

[0009] Preferably, the molecular sieve bed is connected to an oxygen storage tank, the air filter is connected to a fan for air intake, the air filter is connected to a compressor, the solenoid valve is connected to the molecular sieve bed, the oxygen storage tank is connected to a flow controller to regulate the flow rate of output oxygen, and the molecular sieve bed is connected to a fan for exhaust, so that separated nitrogen and other waste gases are discharged outside the equipment.

[0010] Preferably, the oxygen storage tank is connected to an output pipe, and the outer surface of the output pipe is connected to an external connecting pipe.

[0011] Preferably, the rotating disk on the outer surface of the fixed shaft is rotatably connected to the fixed shaft while also being slidably connected. A handle is fixedly provided on the outer surface of the rotating disk, and a through groove is provided on the side of the rotating disk near the handle. A fixed rod is fixedly provided in the through groove.

[0012] Preferably, an elastic element is sleeved on the outer surface of the fixing rod, the fixing rod is slidably connected to the pressure rod, and the elastic element is located on the side of the pressure rod away from the center of the rotating disk.

[0013] Preferably, a limiting groove is formed on the rotating disk, and a limiting block is fixedly provided on the outer shell, with the limiting block and the limiting groove being mutually compatible.

[0014] Preferably, a limit ring is fixedly provided at the end of the fixed shaft, and the limit ring is used to restrict the rotating disk to prevent it from falling off.

[0015] Preferably, the fixing block is symmetrically provided with cylindrical grooves, the cylindrical grooves are connected to the grooves, the cylindrical grooves are threadedly connected to a bidirectional lead screw, and the outer surface of the bidirectional lead screw is threadedly connected to the sliding block.

[0016] Preferably, each of the sliding blocks has an arc-shaped block fixedly provided on its opposite surface, and the arc of the arc-shaped block is adapted to the outer pipe.

[0017] The beneficial effects of this application are:

[0018] The VRAC vacuum regeneration circulating adsorption oxygen generator provided in this application uses a sealing mechanism consisting of a bidirectional lead screw, a sliding block, and an arc-shaped block. This allows the arc-shaped block to precisely fit the external pipe to achieve a seal, thereby improving the reliability of the pipe interface seal, preventing oxygen leakage, and eliminating safety hazards.

[0019] The VRAC vacuum regeneration circulating adsorption oxygen generator provided in this application uses a winding mechanism with a pressure bar, elastic element and limiting structure. The pressure bar first presses and fixes one end of the outer pipe before winding. At the same time, the positioning function of the limiting block and limiting groove is used to achieve the effect of orderly storage of the outer pipe, avoid tangling, bending and damage, extend the service life of the pipeline, save storage space and improve the portability of the equipment.

[0020] In addition to the purposes, features, and advantages described above, this application has other purposes, features, and advantages. These will be further described in detail below with reference to figures. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0022] Figure 2 This is a schematic diagram of the inner cavity structure of the outer shell of the present invention;

[0023] Figure 3 This is a cross-sectional view of the winding mechanism of the present invention;

[0024] Figure 4 This is a schematic diagram of the winding mechanism of the present invention during operation;

[0025] Figure 5 This is a schematic diagram of the sealing mechanism of the present invention;

[0026] Figure 6 This is a cross-sectional schematic diagram of the sealing mechanism of the present invention.

[0027] Drawing number explanation:

[0028] 1. Outer shell; 2. Oxygen storage tank; 3. Molecular sieve bed; 4. Solenoid valve; 5. Air filter; 6. Compressor; 7. Flow controller; 8. Fan; 9. Output pipe; 10. External pipe; 11. Fixed shaft; 12. Rotating disk; 13. Rewinding groove; 14. Handle; 15. Through groove; 16. Fixed rod; 17. Elastic element; 18. Pressure rod; 19. Limiting groove; 20. Limiting block; 21. Limiting ring; 22. Fixed block; 23. Groove; 24. Columnar groove; 25. Bidirectional lead screw; 26. Sliding block; 27. Arc block. Detailed Implementation

[0029] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0030] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present application.

[0031] Please refer to Figures 1 to 6 The VRAC vacuum regeneration cycle adsorption oxygen generator includes: a housing 1, an oxygen generating component is provided inside the housing 1, and also includes: a winding mechanism and a sealing mechanism.

[0032] The oxygen generating assembly includes an oxygen storage tank 2, a molecular sieve bed 3, a solenoid valve 4, an air filter 5, a compressor 6, a flow controller 7, and a fan 8. All these components are housed within the outer casing 1. The molecular sieve bed 3 is connected to the oxygen storage tank 2. The air filter 5 is connected to the fan 8 for air intake and to the compressor 6. The solenoid valve 4 is connected to the molecular sieve bed 3. The oxygen storage tank 2 is connected to the flow controller 7, which regulates the output oxygen flow rate. The molecular sieve bed 3 is connected to the fan 8 for exhaust, allowing separated nitrogen and other waste gases to be discharged outside the equipment. An output pipe 9 is connected to the oxygen storage tank 2, and an external connecting pipe 10 is connected to the outer surface of the output pipe 9.

[0033] This embodiment discloses a VRAC vacuum regeneration cycle adsorption oxygen generator, whose core structure includes a shell 1, an oxygen generating component, a winding mechanism, and a sealing mechanism. The components work together to achieve oxygen generation, pipeline sealing, and storage functions. The specific structural arrangement is as follows: the shell 1 serves as the mounting carrier for the entire device, and its inner cavity is used to accommodate the oxygen generating component. The side walls and front end provide mounting references for the winding mechanism and the sealing mechanism, respectively. The oxygen generating assembly is integrated into the inner cavity of the outer shell 1 and consists of an oxygen storage tank 2, a molecular sieve bed 3, a solenoid valve 4, an air filter 5, a compressor 6, a flow controller 7, and a fan 8. The components are connected in sequence through pipelines: one end of the air filter 5 is connected to the fan 8 for air intake, and the other end is connected to the compressor 6. The output end of the compressor 6 is connected to the molecular sieve bed 3. The solenoid valve 4 is connected in series in the air path of the molecular sieve bed 3 to control the on / off state. The molecular sieve bed 3 is simultaneously connected to the oxygen storage tank 2 and the fan 8 for exhaust. The output end of the oxygen storage tank 2 is connected to the flow controller 7, which is used to regulate the flow rate of the output oxygen. An output pipe 9 is also connected to the oxygen storage tank 2, and an external pipe 10 is further connected to the outer surface of the output pipe 9, serving as the final output channel for oxygen.

[0034] Please refer to Figure 1 as well as Figures 3 to 6The VRAC vacuum regeneration circulating adsorption oxygen generator also includes: a winding mechanism, which is set on the side wall of the outer shell 1. The winding mechanism includes a fixed shaft 11 fixedly set on the side wall of the outer shell 1, a rotating disk 12 rotatably set on the fixed shaft 11, a winding groove 13 opened on the rotating disk 12, and a pressure rod 18 movably set in the winding groove 13. The winding mechanism is used to wind up and seal the pipeline interface.

[0035] The rotating disk 12 on the outer surface of the fixed shaft 11 is rotatably connected to the fixed shaft 11 and slidably connected to it. A handle 14 is fixedly installed on the outer surface of the rotating disk 12. A through groove 15 is opened on the side of the rotating disk 12 near the handle 14, and a fixed rod 16 is fixedly installed in the through groove 15. An elastic element 17 is sleeved on the outer surface of the fixed rod 16. The fixed rod 16 is slidably connected to the pressure rod 18, and the elastic element 17 is located on the side of the pressure rod 18 away from the center of the rotating disk 12. A limit groove 19 is opened on the rotating disk 12, and a limit block 20 is fixedly installed on the outer shell 1. The limit block 20 and the limit groove 19 are mutually adapted. A limit ring 21 is fixedly installed at the end of the fixed shaft 11 to limit the rotating disk 12 and prevent it from falling off.

[0036] In the above embodiment, the winding mechanism is fixedly installed on the side wall of the outer casing 1, and mainly consists of a fixed shaft 11, a rotating disk 12, a pressure rod 18, a fixed rod 16, an elastic element 17, a limiting block 20, and a limiting ring 21. The fixed shaft 11 is fixedly installed on the side wall of the outer casing 1, and the rotating disk 12 is sleeved on the outer surface of the fixed shaft 11, forming both a rotating connection and a sliding connection with the fixed shaft 11. A handle 14 for easy operation is fixedly provided on the outer surface of the rotating disk 12, and a winding groove 13 for winding the pipeline is opened on its disk surface. The pressure rod 18 is movably installed in the winding groove 13. A through groove 15 is opened on the side of the rotating disk 12 near the handle 14, and a fixed rod 16 is fixedly installed in the through groove 15. The faceplate is provided with an elastic element 17, which is slidably connected to the pressure rod 18. The elastic element 17 is located on the side of the pressure rod 18 away from the center of the rotating disk 12, and is used to provide elastic pressure to the pressure rod 18 toward the winding groove 13. A limit groove 19 is correspondingly provided on the rotating disk 12. A limit block 20 adapted to the limit groove 19 is fixedly provided on the side wall of the outer shell 1, which is used to limit the rotation angle of the rotating disk 12. A limit ring 21 is fixedly provided at the end of the fixed shaft 11 to prevent the rotating disk 12 from falling off the fixed shaft 11.

[0037] Please refer to Figure 1 as well as Figures 5 to 6The VRAC vacuum regeneration circulating adsorption oxygen generator also includes a sealing mechanism. The sealing mechanism is located at the front end of the outer casing 1 and includes a fixed block 22 fixedly mounted at the front end of the outer casing 1. A groove 23 is formed on the fixed block 22, and sliding blocks 26 are symmetrically slidably arranged within the groove 23. The sealing mechanism is used to seal the pipeline interface during use. Arc-shaped blocks 27 are fixedly mounted on opposite sides of the sliding blocks 26, and the curvature of the arc-shaped blocks 27 is adapted to the outer pipe 10.

[0038] In the above embodiment, the sealing mechanism is installed at the front end of the outer casing 1 and includes a fixing block 22, a bidirectional lead screw 25, a sliding block 26, and an arc-shaped block 27. The fixing block 22 is fixedly disposed at the front end of the outer casing 1, and a groove 23 is provided inside it. Cylindrical grooves 24 communicating with the groove 23 are symmetrically provided on both sides of the groove 23. The bidirectional lead screw 25 is threadedly connected to the cylindrical grooves 24. The sliding blocks 26 are symmetrically slidably disposed in the grooves 23, and their outer surfaces are threadedly connected to the bidirectional lead screw 25. Arc-shaped blocks 27 are fixedly provided on the opposite surfaces of the sliding blocks 26. The curvature of the arc-shaped blocks 27 is adapted to the shape of the outer pipe 10. The rotation of the bidirectional lead screw 25 can drive the two sliding blocks 26 to move closer or further away from each other, thereby causing the arc-shaped blocks 27 to clamp or loosen the outer pipe 10. Cylindrical grooves 24 are symmetrically arranged on the fixed block 22. The cylindrical grooves 24 are connected to the grooves 23. A two-way lead screw 25 is threadedly connected to the cylindrical grooves 24. The outer surface of the two-way lead screw 25 is threadedly connected to the sliding block 26.

[0039] Based on all the above embodiments, the working principle of the present invention is as follows:

[0040] After the oxygen production operation starts, the intake fan 8 operates first, drawing in outside air and delivering it to the air filter 5. After being filtered by the air filter 5 to remove dust, impurities, and other pollutants, the air enters the compressor 6 for compression, forming high-pressure air. This high-pressure air is then delivered to the molecular sieve bed 3, which uses adsorption separation to separate and screen gases such as oxygen and nitrogen from the high-pressure air. During this process, the solenoid valve 4 controls the airflow through the molecular sieve bed 3 in real time according to the process requirements of the vacuum regeneration cycle, ensuring a stable and efficient separation process. The oxygen separated by the molecular sieve bed 3 is delivered to the oxygen storage tank 2 for storage, while the separated nitrogen and other waste gases are discharged outside the equipment via the exhaust fan 8. When oxygen needs to be output, the oxygen in the oxygen storage tank 2 is delivered to the external pipe 10 via the output pipe 9. The flow controller 7 operates synchronously, adjusting the oxygen output flow rate according to actual usage requirements, completing the entire oxygen production and delivery process.

[0041] When the equipment is in use, and the external pipe 10 needs to remain connected and prevent oxygen leakage, the pipeline is sealed by adjusting the sealing mechanism. Specifically, rotating the bidirectional lead screw 25 on the fixed block 22 causes the two sliding blocks 26 to slide relative to each other along the groove 23, as the bidirectional lead screw 25 is threadedly connected to the sliding block 26 and the sliding block 26 is limited by the groove 23 and cannot rotate synchronously with the lead screw. The rotational motion of the bidirectional lead screw 25 is converted into the relative sliding of the two sliding blocks 26 along the groove 23. The sliding block 26 drives the arc-shaped block 27 on its opposite surface to move closer synchronously until the arc-shaped block 27 is tightly fitted with the outer surface of the external pipe 10. The arc of the arc-shaped block 27 and the external pipe 10 are adapted to form a complete seal, preventing oxygen from leaking from the pipeline interface during oxygen delivery.

[0042] When the equipment is not in use and the external connecting pipe 10 needs to be stored and sealed, the process consists of four steps: unlocking, pressing, winding, and positioning. First, rotate the bidirectional lead screw 25 in the reverse direction, causing the sliding block 26 to move the arc-shaped block 27 away from the external connecting pipe 10, thus releasing the sealing constraint on the external connecting pipe 10. Second, pull the handle 14 of the rotating disk 12, causing the rotating disk 12 to slide along the fixed shaft 11, and then move the pressure rod 18. At this time, the elastic element 17 is compressed, and simultaneously, the limiting groove 19 on the rotating disk 12 disengages from the limiting block 20 on the outer casing 1. Place the free end of the external connecting pipe 10 between the winding groove 13 of the rotating disk 12 and the pressure rod 18, and rotate the handle 14 to press and fix one end of the external connecting pipe 10 into the winding groove 13. Third, hold the handle 14 and rotate the... The rotating disk 12 rotates around the fixed shaft 11. Since one end of the outer pipe 10 has been pressed and fixed by the pressure rod 18, the rotating disk 12 can orderly wind the outer pipe 10 into the winding groove 13 during rotation, realizing pipe storage. In the fourth step, after winding is completed, the rotating disk 12 is pushed to make the limiting groove 19 re-engage with the limiting block 20 on the outer shell 1, realizing the angular positioning of the rotating disk 12. At the same time, the limiting ring 21 at the end of the fixed shaft 11 can restrict the axial movement of the rotating disk 12, preventing it from falling off the fixed shaft 11. The pressure rod 18 is always pressed tightly against the wound outer pipe 10 under the action of the elastic element 17, ensuring the stability and sealing of the pipe after storage. It should be noted that when the limiting groove 19 of the rotating disk 12 re-engages with the limiting block 20 on the outer shell 1, its outer surface is provided with a protective cover to prevent external impurities from contaminating the outer pipe 10.

[0043] Those skilled in the art should understand that the discussion of any of the above embodiments is merely exemplary. Under the framework of this invention, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of the different aspects of the invention as described above, which are not provided in detail for the sake of brevity.

[0044] This invention is intended to cover all such substitutions, modifications, and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this invention should be included within the scope of protection of this invention.

Claims

1. VRAC vacuum regeneration circulating adsorption oxygen generator, including: The outer shell (1) is provided with an oxygen generating component inside the outer shell (1), characterized in that it further includes a winding mechanism and a sealing mechanism; The winding mechanism is located on the side wall of the outer shell (1). The winding mechanism includes a fixed shaft (11) fixedly located on the side wall of the outer shell (1). A rotating disk (12) is rotatably arranged on the fixed shaft (11). A winding groove (13) is opened on the rotating disk (12). A pressure rod (18) is movably arranged in the winding groove (13). The winding mechanism is used to wind up and seal the pipeline interface. The sealing mechanism is located at the front end of the outer shell (1). The sealing mechanism includes a fixing block (22) fixedly located at the front end of the outer shell (1). A groove (23) is provided on the fixing block (22). A sliding block (26) is symmetrically slidably arranged in the groove (23). The sealing mechanism is used to seal the pipeline interface during use.

2. The VRAC vacuum regeneration circulating adsorption oxygen generator according to claim 1, characterized in that, The oxygen generating assembly includes an oxygen storage tank (2), a molecular sieve bed (3), a solenoid valve (4), an air filter (5), a compressor (6), a flow controller (7), and a fan (8). The oxygen storage tank (2), molecular sieve bed (3), solenoid valve (4), air filter (5), compressor (6), flow controller (7), and fan (8) are all located inside the outer shell (1).

3. The VRAC vacuum regeneration circulating adsorption oxygen generator according to claim 2, characterized in that, The molecular sieve bed (3) is connected to the oxygen storage tank (2), the air filter (5) is connected to the fan (8) for air intake, the air filter (5) is connected to the compressor (6), the solenoid valve (4) is connected to the molecular sieve bed (3), the oxygen storage tank (2) is connected to the flow controller (7) and adjusts the flow rate of output oxygen, the molecular sieve bed (3) is connected to the fan (8) for exhaust, and the separated nitrogen and other waste gases are discharged outside the equipment.

4. The VRAC vacuum regeneration circulating adsorption oxygen generator according to claim 3, characterized in that, The oxygen storage tank (2) is connected to an output pipe (9), and the outer surface of the output pipe (9) is connected to an external pipe (10).

5. The VRAC vacuum regeneration circulating adsorption oxygen generator according to claim 1, characterized in that, The rotating disk (12) on the outer surface of the fixed shaft (11) is rotatably connected to the fixed shaft (11) while slidingly connected. A handle (14) is fixedly provided on the outer surface of the rotating disk (12). A through groove (15) is provided on the side of the rotating disk (12) near the handle (14). A fixed rod (16) is fixedly provided in the through groove (15).

6. The VRAC vacuum regeneration circulating adsorption oxygen generator according to claim 5, characterized in that, The outer surface of the fixed rod (16) is fitted with an elastic element (17), the fixed rod (16) is slidably connected to the pressure rod (18), and the elastic element (17) is located on the side of the pressure rod (18) away from the center of the rotating disk (12).

7. The VRAC vacuum regeneration circulating adsorption oxygen generator according to claim 6, characterized in that, A limiting groove (19) is provided on the rotating disk (12), and a limiting block (20) is fixedly provided on the outer shell (1). The limiting block (20) and the limiting groove (19) are adapted to each other.

8. The VRAC vacuum regeneration circulating adsorption oxygen generator according to claim 1, characterized in that, A limit ring (21) is fixedly provided at the end of the fixed shaft (11), and the limit ring (21) is used to limit the rotating disk (12) to prevent it from falling off.

9. The VRAC vacuum regeneration circulating adsorption oxygen generator according to claim 8, characterized in that, The fixed block (22) is symmetrically provided with cylindrical grooves (24), which are connected to the groove (23). A two-way lead screw (25) is threadedly connected to the cylindrical groove (24), and the outer surface of the two-way lead screw (25) is threadedly connected to the sliding block (26).

10. The VRAC vacuum regeneration circulating adsorption oxygen generator according to claim 9, characterized in that, The sliding block (26) has an arc-shaped block (27) fixedly installed on its opposite surface, and the arc of the arc-shaped block (27) is adapted to the outer pipe (10).

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