Oxygen tank structure of portable oxygen generator

Abstract

The oxygen tank structure comprises a tank body, a one-way valve and a connecting piece, an oxygen inlet and an oxygen outlet are formed in the tank body, the one-way valve is arranged in the oxygen inlet, an annular inserting opening is formed in the connecting piece, a first connecting pipe and a second connecting pipe are arranged on the connecting piece, the annular inserting opening is inserted into the oxygen inlet, and the first connecting pipe is connected with the second connecting pipe. And the annular insertion port, the first connecting pipe and the second connecting pipe are communicated pairwise. The oxygen tank structure disclosed by the utility model is arranged in the oxygen generator, so that the nitrogen removal efficiency of the separation tower A and the separation tower B in the oxygen generator can be improved, the concentration of oxygen output by the separation tower A and the separation tower B can be improved, and the stability of the oxygen output flow of the separation tower A and the separation tower B is improved; the service lives of the molecular sieves in the separation tower A and the separation tower B can be prolonged.

Description

Technical Field

[0001] This utility model relates to the field of oxygen generators, and in particular to an oxygen tank structure for a portable oxygen generator. Background Technology

[0002] Portable oxygen concentrators are small devices designed for users who need oxygen therapy. With their portability, ease of use, and stability, they provide great convenience to users, especially those who need long-term oxygen therapy or outdoor activities, and can significantly improve their quality of life.

[0003] In existing portable oxygen concentrators, the gas paths between the two separation towers and the oxygen storage tank are basically independent. That is, the oxygen produced by the two separation towers enters the oxygen storage tank of the oxygen concentrator independently. This also means that the nitrogen discharge of the two separation towers is independent and does not affect each other. To a certain extent, this will lead to low nitrogen discharge efficiency of the two separation towers, resulting in a decrease in the concentration of oxygen output from the two separation towers and unstable oxygen output flow. It will also reduce the adsorption capacity of the molecular sieves in the two separation towers and shorten the service life of the separation sieves. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of the prior art and provide an oxygen tank structure for a portable oxygen generator.

[0005] According to one aspect of the present invention, an oxygen tank structure for a portable oxygen concentrator is provided, comprising:

[0006] The tank body is equipped with an oxygen inlet and an oxygen outlet.

[0007] One-way valve, the one-way valve is located in the oxygen inlet; and

[0008] The connector has an annular insertion interface and a first connecting pipe and a second connecting pipe for connecting to two oxygen outlet pipes on the separation tower respectively. The annular insertion interface is inserted into the oxygen inlet, and the annular insertion interface, the first connecting pipe, and the second connecting pipe are connected to each other.

[0009] The oxygen tank structure of this invention is installed in an oxygen generator. A first connecting pipe and a second connecting pipe are respectively connected to two oxygen outlet pipes on the separation tower in the oxygen generator. Oxygen produced by separation tower A in the oxygen generator can enter the tank for storage through the first connecting pipe, annular connector, and oxygen inlet. Oxygen produced by separation tower B in the oxygen generator can enter the tank for storage through the second connecting pipe, annular connector, and oxygen inlet. A one-way valve in the oxygen inlet allows oxygen to enter the tank but prevents oxygen in the tank from flowing back into the annular connector. When separation tower A in the oxygen generator is producing oxygen, separation tower B discharges nitrogen. The oxygen produced by separation tower A enters the tank for storage through the first connecting pipe, annular connector, and oxygen inlet. Simultaneously, a portion of the oxygen produced by separation tower A enters separation tower B through the first connecting pipe and the second connecting pipe. In this process, the oxygen entering separation tower B can assist separation tower B in discharging nitrogen, thereby improving the nitrogen discharge efficiency of separation tower B. When separation tower B in the oxygen generator is producing oxygen, separation tower A discharges nitrogen. The oxygen produced by separation tower B enters the tank for storage through the second connecting pipe, the annular connector, and the oxygen inlet. At the same time, a portion of the oxygen produced by separation tower B enters separation tower A through the second connecting pipe and the first connecting pipe. The oxygen entering separation tower A can assist separation tower A in discharging nitrogen, thereby improving the nitrogen discharge efficiency of separation tower A. In this way, the nitrogen discharge efficiency of both separation tower A and separation tower B can be improved, thereby increasing the concentration of oxygen output from separation tower A and separation tower B, improving the stability of oxygen output flow rate from separation tower A and separation tower B, and extending the service life of the molecular sieves in separation tower A and separation tower B.

[0010] Furthermore, it also includes a sealing ring, with an annular step on the inner wall of the oxygen inlet, the sealing ring being fitted onto the outer periphery of the one-way valve, the sealing ring being housed in the oxygen inlet and abutting against the annular step.

[0011] Therefore, the sealing ring can improve the sealing between the annular connector and the oxygen inlet, preventing oxygen from leaking out.

[0012] Furthermore, the outer diameter of the annular connector is smaller than the inner diameter of the port of the sealing ring near the annular connector, and the annular connector is accommodated in the port of the sealing ring near the annular connector.

[0013] Therefore, the annular connector being housed within the port of the sealing ring further ensures the seal between the annular connector and the oxygen inlet.

[0014] Furthermore, the first connecting tube and the second connecting tube are symmetrically distributed about the annular insertion interface.

[0015] Therefore, this ensures the consistency of oxygen output from separator A and separator B of the oxygen generator, preventing fluctuations in the oxygen concentration of the mixed output from separator A and separator B. It also avoids sudden changes in pressure or flow rate when separator A and separator B switch operations, achieving seamless connection and ensuring the continuity and stability of oxygen output.

[0016] Furthermore, the tank body is provided with a positioning post, and the connecting part is provided with a positioning cylinder that is adapted to the positioning post, with the positioning post inserted into the positioning cylinder.

[0017] Therefore, during assembly, placing the positioning sleeve on the connector onto the positioning post on the tank body ensures that the annular insertion port on the connector is accurately inserted into the oxygen inlet on the tank body, thus improving assembly efficiency.

[0018] Furthermore, there are two positioning posts and two positioning cylinders. The two positioning posts are located on both sides of the oxygen inlet, and the two positioning cylinders are located on both sides of the annular insertion interface. The two positioning posts are inserted into the two positioning cylinders respectively.

[0019] Therefore, during assembly, by placing the two positioning cylinders on the connector onto the two positioning posts on the tank body, the annular insertion interface on the connector can be accurately inserted into the oxygen inlet on the tank body, thus improving assembly efficiency.

[0020] Furthermore, a recessed section is provided on the outer wall of the tank, and the oxygen inlet and positioning column are both located on the recessed section.

[0021] Therefore, since the oxygen inlet and the positioning column are both located on the sunken part, the connector can also be located on the sunken part when it is installed on the tank body. This can effectively reduce the overall height of the tank body and the connector, and reduce the space occupied by the oxygen tank structure in the oxygen generator.

[0022] Furthermore, the connector includes a base and a cover plate. An annular insertion port is provided on the cover plate. A first connecting pipe and a second connecting pipe are provided on the base. A T-shaped air passage is provided on the base. The first connecting pipe is connected to the annular insertion port through the T-shaped air passage. The first connecting pipe is connected to the second connecting pipe through the T-shaped air passage. The second connecting pipe is connected to the annular insertion port through the T-shaped air passage. The cover plate is placed on the base to cover the T-shaped air passage.

[0023] Therefore, the connector is assembled from the base and the cover plate, which is easy to process and shape. The base and the cover plate together enclose and form a T-shaped air passage, which is also easy to process and shape.

[0024] Furthermore, it also includes an adapter, the side of which is provided with a first insertion pipe and a second insertion pipe. The first connecting pipe is inserted into the first insertion pipe, and the second connecting pipe is inserted into the second insertion pipe. The adapter is provided with two third insertion pipes for communicating with two oxygen outlet pipes on the separation tower respectively. One third insertion pipe is connected to the first insertion pipe, and the other third insertion pipe is connected to the second insertion pipe.

[0025] Therefore, the two third connectors on the adapter are connected to the oxygen outlet pipes of the two separation towers in the oxygen generator, respectively. The oxygen generated by the two separation towers in the oxygen generator enters the tank through the adapter and connector. The existence of the adapter facilitates the spatial layout of the separation towers and tank inside the oxygen generator, and effectively utilizes the space inside the oxygen generator.

[0026] Furthermore, the adapter is provided with fixing holes.

[0027] Therefore, screws can be used to fix the adapter to the inner top of the oxygen concentrator to prevent the adapter from shaking. Attached Figure Description

[0028] Figure 1 This is a structural diagram of the oxygen tank structure of a portable oxygen generator according to the present invention;

[0029] Figure 2 for Figure 1 A schematic diagram showing the disassembled structure of the oxygen tank;

[0030] Figure 3 for Figure 2 A structural schematic diagram of the oxygen tank structure from another perspective;

[0031] Figure 4 for Figure 1 The diagram shows the structure of the oxygen tank after concealing the connecting parts and adapters.

[0032] Figure 5 for Figure 1 The diagram shows the structure of the oxygen tank after the tank body has been concealed.

[0033] Figure 6 for Figure 5 The diagram shows the disassembled structure of the connector and adapter. Detailed Implementation

[0034] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0035] In the description of this invention, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. In the description of this invention, unless otherwise stated, "a plurality of" means two or more. It should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "connected," "linked," and "set up" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two elements.

[0036] See Figures 1 to 6 An oxygen tank structure for a portable oxygen generator includes a tank body 1, a one-way valve 2, a connector 3, a sealing ring 4, and an adapter 5.

[0037] See Figures 1 to 4 The tank 1 has an oxygen inlet 11 and an oxygen outlet 12 formed on it. The tank 1 is used to store the oxygen produced by the separation tower of the oxygen generator. A valve can be installed on the oxygen outlet 12 to output oxygen.

[0038] See Figures 2 to 4 An annular step 111 is formed on the inner wall of the oxygen inlet 11. A one-way valve 2 is installed in the oxygen inlet 11, and a sealing ring 4 is fitted around the outer periphery of the one-way valve 2. The sealing ring 4 is housed within the oxygen inlet 11. (See reference...) Figure 2 The bottom of the sealing ring 4 abuts against the annular step 111, see reference. Figure 2 and Figure 4 The sealing ring 4 is submerged in the oxygen inlet 11. The one-way valve 2 allows oxygen to enter the tank 1 through the oxygen inlet 11 and does not allow oxygen in the tank 1 to flow back out through the oxygen inlet 11.

[0039] See Figure 3 , Figure 5 and Figure 6The connector 3 has an annular insertion interface 31 formed on it, and a first connecting pipe 32 and a second connecting pipe 33 formed on it. The axes of the first connecting pipe 32 and the second connecting pipe 33 are arranged perpendicular to the axis of the annular insertion interface 31. The annular insertion interface 31, the first connecting pipe 32, and the second connecting pipe 33 are connected in pairs. The first connecting pipe 32 is connected to the annular insertion interface 31, the second connecting pipe 33 is connected to the annular insertion interface 31, and the first connecting pipe 32 is connected to the second connecting pipe 33. The first connecting pipe 32 and the second connecting pipe 33 are used to connect to the two oxygen outlet pipes on the separation tower in the oxygen generator.

[0040] See Figure 2 and Figure 3 The first connecting pipe 32 and the second connecting pipe 33 are symmetrically distributed about the annular connector 31. That is, the arrangement of the flow channels from the first connecting pipe 32 to the annular connector 31 is symmetrical about the annular connector 31 as is the arrangement of the flow channels from the second connecting pipe 33 to the annular connector 31. This ensures the consistency of oxygen output from the separator A and separator B in the oxygen generator, and prevents fluctuations in the oxygen concentration output from the mixed separator A and separator B. It also avoids sudden changes in pressure or flow rate when the separator A and separator B switch operations, achieving seamless connection and ensuring the continuity and stability of oxygen output.

[0041] See Figures 1 to 3 The annular connector 31 on the connector 3 is inserted into the oxygen inlet 11. The outer diameter of the annular connector 31 is smaller than the inner diameter of the port of the sealing ring 4 near the annular connector 31. When the annular connector 31 on the connector 3 is inserted into the oxygen inlet 11, the annular connector 31 is accommodated in the port of the sealing ring 4 near the annular connector 31. The sealing ring 4 can improve the sealing between the annular connector 31 and the oxygen inlet 11 and prevent oxygen from leaking out. The annular connector 31 being accommodated in the port of the sealing ring 4 can further ensure the sealing between the annular connector 31 and the oxygen inlet 11.

[0042] See Figure 2 The tank body 1 has positioning posts 13 formed on it, and the connector 3 has positioning cylinders 34 formed at corresponding positions to fit the positioning posts 13. The positioning posts 13 are inserted into the positioning cylinders 34. In this embodiment, there are two positioning posts 13 and two positioning cylinders 34. The two positioning posts 13 are located on both sides of the oxygen inlet 11, and the two positioning cylinders 34 are located on both sides of the annular insertion interface 31. The two positioning posts 13 are inserted into the two positioning cylinders 34. When assembling the connector 3 and the tank body 1, the two positioning cylinders 34 on the connector 3 are respectively fitted onto the two positioning posts 13 on the tank body 1, which ensures that the annular insertion interface 31 on the connector 3 is accurately inserted into the oxygen inlet 11 on the tank body 1, thus improving the assembly efficiency. In other embodiments, the number of positioning posts 13 and positioning cylinders 34 can be adjusted according to the assembly requirements to ensure that the number of positioning posts 13 and positioning cylinders 34 is the same and their positions correspond.

[0043] See Figure 4 The outer wall of the tank body 1 is formed with a recessed portion 14. The oxygen inlet 11 and the positioning post 13 are both located on the recessed portion 14. Since the oxygen inlet 11 and the positioning post 13 are both located on the recessed portion 14, the connector 3 can also be located on the recessed portion 14 when it is installed on the tank body 1. Figure 1 (as shown in the diagram), which can effectively reduce the overall height of the tank 1 and the connecting parts 3, and reduce the space occupied by the oxygen tank structure in the oxygen generator.

[0044] See Figure 5 and Figure 6 In this embodiment, the connector 3 includes a base 301 and a cover plate 302. An annular insertion port 31 is disposed on the cover plate 302. A first connecting pipe 32 and a second connecting pipe 33 are disposed on the base 301. A T-shaped air passage 3011 is formed on the base 301. The first connecting pipe 32 communicates with the annular insertion port 31 through the T-shaped air passage 3011. The first connecting pipe 32 communicates with the second connecting pipe 33 through the T-shaped air passage 3011. The second connecting pipe 33 communicates with the annular insertion port 31 through the T-shaped air passage 3011. The cover plate 302 covers the base 301 to cover the T-shaped air passage 3011. The connector 3 is assembled from the base 301 and the cover plate 302, which is convenient for processing and forming. The base 301 and the cover plate 302 together enclose and form the T-shaped air passage 3011, which is convenient for processing and forming the T-shaped air passage 3011.

[0045] See Figure 6 The base 301 has a snap-fit ​​groove 3012 formed on it, and the T-shaped air passage 3011 is located in the snap-fit ​​groove 3012. The cover plate 302 has a plug-in protrusion (not shown) that is adapted to the snap-fit ​​groove 3012. The cover plate 302 is connected to the base 301 through the plug-in protrusion and the snap-fit ​​groove 3012. The base 301 and the cover plate 302 can be heat-fused together by ultrasonic pressing.

[0046] See Figures 1 to 6The adapter 5 has a first insertion pipe 51 and a second insertion pipe 52 formed on its side. The first connecting pipe 32 on the connector 3 is inserted and fixed in the first insertion pipe 51, and the second connecting pipe 33 on the connector 3 is inserted and fixed in the second insertion pipe 52. The adapter 5 has two third insertion pipes 53 formed on its side. The two third insertion pipes 53 are used to connect to the two oxygen outlet pipes on the separation tower A and separation tower B in the oxygen generator. One third insertion pipe 53 is connected to the first insertion pipe 51, and the other third insertion pipe 53 is connected to the second insertion pipe 52. The oxygen generated by the two separation towers in the oxygen generator can enter the tank 1 through the adapter 5 and the connector 3. The axis of the third insertion pipe 53 is arranged perpendicular to the axis of the first connecting pipe 32 and the second connecting pipe 33, and the axis of the third insertion pipe 53 is arranged parallel to the axis of the annular insertion interface 31. The existence of the adapter 5 facilitates the spatial layout of the separation towers and the tank 1 inside the oxygen generator and effectively utilizes the space inside the oxygen generator.

[0047] See Figure 3 The adapter 5 has a fixing hole 54 formed on it. A screw can be passed through the fixing hole 54 and screwed onto the inner top of the oxygen concentrator to fix the adapter 5 onto the inner top of the oxygen concentrator and prevent the adapter 5 from shaking.

[0048] See Figures 1 to 6The oxygen tank structure of this utility model is installed in an oxygen generator. The two third connectors 53 on the adapter 5 are respectively connected to the two oxygen outlet pipes on separation tower A and separation tower B in the oxygen generator. Oxygen generated by separation tower A in the oxygen generator can enter the tank 1 for storage through a third connector 53, a first connector 51, a first connecting pipe 32, a T-shaped airway 3011, an annular connector 31, a one-way valve 2, and an oxygen inlet 11. Oxygen generated by separation tower B in the oxygen generator can enter the tank 1 for storage through another third connector 53, a second connector 52, a second connecting pipe 33, a T-shaped airway 3011, an annular connector 31, a one-way valve 2, and an oxygen inlet. Oxygen enters the tank 1 through inlet 11 and is stored therein. The one-way valve 2 in inlet 11 allows oxygen to enter the tank 1 but prevents backflow of oxygen from the tank 1 into the annular connector 31. When the oxygen generator's separator A produces oxygen, separator B discharges nitrogen. The oxygen produced by separator A enters the tank 1 through a third connector 53, a first connector 51, a first connecting pipe 32, a T-shaped air passage 3011, an annular connector 31, one-way valve 2, and inlet 11. Simultaneously, a portion of the oxygen produced by separator A enters through the third connector 53, the first connector 51, the first connecting pipe 32, the T-shaped air passage 3011, the second connecting pipe 33, and the second... Connector 52 and another third connector 53 enter the separation tower B. The oxygen entering the separation tower B can assist in the nitrogen removal of the separation tower B, thereby improving the nitrogen removal efficiency of the separation tower B. When the separation tower B in the oxygen generator is producing oxygen, the separation tower A removes nitrogen. The oxygen produced by the separation tower B enters the tank 1 for storage through another third connector 53, a second connector 52, a second connecting pipe 33, a T-shaped air passage 3011, an annular connector 31, a one-way valve 2, and an oxygen inlet 11. At the same time, a portion of the oxygen produced by the separation tower B will enter the tank 1 for storage through the third connector 53, the second connector 52, the second connecting pipe 33, the T-shaped air passage 3011, and the first connecting pipe 3. 2. The first connector 51 and the third connector 53 enter the separation tower A. The oxygen entering the separation tower A can assist the separation tower A in nitrogen removal, thereby improving the nitrogen removal efficiency of the separation tower A. This can improve the nitrogen removal efficiency of both the separation tower A and the separation tower B of the oxygen generator, thereby increasing the concentration of oxygen output from the separation tower A and the separation tower B, improving the stability of the oxygen output flow rate of the separation tower A and the separation tower B, and extending the service life of the molecular sieves in the separation tower A and the separation tower B. In addition, the existence of the adapter 5 facilitates the spatial layout of the separation tower A, the separation tower B and the tank 1 inside the oxygen generator, effectively utilizing the space inside the oxygen generator.

[0049] The above descriptions are merely some embodiments of this utility model, intended to illustrate the technical means of this utility model, and are not intended to limit the technical scope of this utility model. Any obvious improvements made to this utility model by those skilled in the art in conjunction with existing common knowledge fall within the protection scope of this utility model.

Claims

1. An oxygen tank structure for a portable oxygen concentrator, characterized in that, include: The tank body is equipped with an oxygen inlet and an oxygen outlet. One-way valve, said one-way valve being located in the oxygen inlet; and The connector is provided with an annular insertion interface, and is provided with a first connecting pipe and a second connecting pipe for communicating with two oxygen outlet pipes on the separation tower respectively. The annular insertion interface is inserted into the oxygen inlet, and the annular insertion interface, the first connecting pipe and the second connecting pipe are connected to each other.

2. The oxygen tank structure according to claim 1, characterized in that, It also includes a sealing ring, and the inner wall of the oxygen inlet is provided with an annular step. The sealing ring is sleeved on the outer periphery of the one-way valve, and the sealing ring is housed in the oxygen inlet and abuts against the annular step.

3. The oxygen tank structure according to claim 2, characterized in that, The outer diameter of the annular connector is smaller than the inner diameter of the port of the sealing ring near the annular connector, and the annular connector is accommodated in the port of the sealing ring near the annular connector.

4. The oxygen tank structure according to claim 1, characterized in that, The first connecting pipe and the second connecting pipe are symmetrically distributed about the annular insertion interface.

5. The oxygen tank structure according to claim 1, characterized in that, The tank body is provided with a positioning post, and the connector is provided with a positioning cylinder adapted to the positioning post, with the positioning post inserted into the positioning cylinder.

6. The oxygen tank structure according to claim 5, characterized in that, The number of positioning posts and positioning cylinders is two. The two positioning posts are located on both sides of the oxygen inlet, and the two positioning cylinders are located on both sides of the annular insertion interface. The two positioning posts are inserted into the two positioning cylinders respectively.

7. The oxygen tank structure according to claim 5, characterized in that, The outer wall of the tank is provided with a recessed section, and the oxygen inlet and positioning column are both located on the recessed section.

8. The oxygen tank structure according to claim 1, characterized in that, The connector includes a base and a cover plate. The annular insertion port is located on the cover plate. The first connecting pipe and the second connecting pipe are located on the base. The base is provided with a T-shaped air passage. The first connecting pipe is connected to the annular insertion port through the T-shaped air passage. The first connecting pipe is connected to the second connecting pipe through the T-shaped air passage. The second connecting pipe is connected to the annular insertion port through the T-shaped air passage. The cover plate is placed on the base to cover the T-shaped air passage.

9. The oxygen tank structure according to any one of claims 1 to 8, characterized in that, It also includes an adapter, the side of which is provided with a first connector and a second connector. The first connecting pipe is inserted into the first connector, and the second connecting pipe is inserted into the second connector. The adapter is provided with two third connectors for communicating with two oxygen outlet pipes on the separation tower respectively. One third connector is connected to the first connector, and the other third connector is connected to the second connector.

10. The oxygen tank structure according to claim 9, characterized in that, The adapter is provided with fixing holes.

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