Oxygen-enriched membrane bag and oxygen-enriched module

Abstract

The utility model discloses an oxygen -enriched membrane bag and oxygen -enriched module relates to oxygen filter field, including support and the bag body made of oxygen -enriched membrane, the bag body is closed and defines the inner chamber, the support includes support assembly and the air pipe, the support assembly sets up in the inner chamber of bag body, the support assembly is used to open bag body from the inner chamber of bag body, a portion of air pipe is located in the inner chamber, another part of air pipe penetrates bag body and extends to bag body outside, the intersection of air pipe and bag body is sealed, and air pipe is used for communicating bag body inner chamber and bag body outside space. The utility model discloses convenient manufacture and maintenance replacement.

Description

Technical Field

[0001] This utility model relates to the field of oxygen filtration technology, specifically to an oxygen-enriched membrane bag and an oxygen-enriched module. Background Technology

[0002] The oxygen-enriched membrane module is an important component of an oxygen generator. The oxygen-enriched membrane separates oxygen and nitrogen in the air by utilizing the differences in the solubility and diffusion rate of different gases in a specific polymer membrane material, thereby obtaining oxygen-enriched air on the low-pressure side of the membrane.

[0003] In related technologies, the outlet pipe of the oxygen-enriched membrane assembly typically passes through the center of multiple oxygen-enriched membranes simultaneously. This setup requires sealing structures on both sides of each oxygen-enriched membrane, resulting in a complex assembly structure. Furthermore, the replacement of the oxygen-enriched membranes is inconvenient during use. Utility Model Content

[0004] This utility model aims to solve one of the technical problems in related technologies to a certain extent. Therefore, this utility model provides an oxygen-enriched membrane bag and an oxygen-enriched module, which are convenient to manufacture and replace during use.

[0005] To achieve the above objectives, the first aspect of this utility model discloses an oxygen-enriched membrane bag, including a support frame and a bag body made of an oxygen-enriched membrane. The bag body is closed and defines an inner cavity. The support frame includes a support component and an air outlet pipe. The support component is disposed in the inner cavity of the bag body and is used to open the bag body from the inner cavity. A portion of the air outlet pipe is located in the inner cavity, and another portion of the air outlet pipe penetrates the bag body and extends to the outside of the bag body. The intersection of the air outlet pipe and the bag body is sealed, and the air outlet pipe is used to connect the inner cavity of the bag body with the external space of the bag body.

[0006] In this technical solution, part of the air outlet pipe of the oxygen-enriched membrane bag is located inside the bag body, and the other part extends out of the bag body. During the production process, only the mating parts of the bag body and the part of the air outlet pipe extending out of the bag body need to be sealed, which simplifies the sealing structure. Moreover, when the oxygen-enriched membrane bags form an oxygen-enriched module, multiple oxygen-enriched membrane bags can form a parallel structure, which facilitates the replacement of individual oxygen-enriched membrane bags.

[0007] Furthermore, the support assembly includes multiple support plates, which are spaced apart along the extension direction of the air outlet pipe. The first end of each support plate is fixedly connected to the air outlet pipe, and the second end of each support plate extends toward the side of the bag body.

[0008] Furthermore, the multiple support plates are divided into two groups, and the two groups of support plates are respectively arranged on opposite sides of the air outlet pipe. The second end of the support plate extends to the side of the corresponding side of the bag body. The inner cavity of the air outlet pipe is formed as an air outlet channel. A through hole communicating with the air outlet channel is formed on the side wall of the air outlet pipe. The through hole is arranged in the interval between adjacent support plates.

[0009] Furthermore, along the direction of the two opposite surfaces of the bag body, the thickness of the first end of the support plate is greater than the thickness of the second end of the support plate, so as to stretch the bag body to a structure in which the middle area of ​​the bag body bulges out relative to the side area.

[0010] Furthermore, the support component includes a wire mesh plate with a wavy cross-section.

[0011] Furthermore, along the direction of the two opposite surfaces of the bag body, the amplitude of the middle part of the wire mesh plate is greater than the amplitude of the two sides of the wire mesh plate, so as to stretch the bag body to a structure in which the middle area of ​​the bag body bulges out relative to the side area.

[0012] Furthermore, the support assembly also includes a guard edge, which surrounds the outer edge of the wire mesh plate, and the air outlet pipe is fixedly connected to the guard edge.

[0013] Furthermore, the bag body includes a first side and a second side opposite to each other along a first direction, and a third side and a fourth side opposite to each other along a second direction. The first direction and the second direction intersect. The first end of the air outlet pipe passes through the first side. The support assembly is fixedly connected to the air outlet pipe. The four edges of the support assembly extend toward the first side, the second side, the third side and the fourth side, respectively.

[0014] Furthermore, the bag body is formed by folding an oxygen-enriched membrane. The first side of the bag body is formed by folding the oxygen-enriched membrane in half, and the second, third, and fourth sides are respectively sealed and connected by the edges of the folded and stacked oxygen-enriched membranes to form a closed inner cavity of the bag body.

[0015] Furthermore, the oxygen-enriched membrane bag includes a sealing element, which is threadedly connected to the portion of the air outlet pipe extending out of the bag body to seal the intersection of the air outlet pipe and the bag body.

[0016] The second aspect of this utility model discloses an oxygen-enriched module, including a manifold and multiple oxygen-enriched membrane bags. The oxygen-enriched membrane bags are the oxygen-enriched membrane bags described in the first aspect. A manifold cavity is formed in the manifold, and an air outlet communicating with the manifold cavity and multiple connecting ports are provided on the cavity wall of the manifold. Each of the multiple connecting ports corresponds to one of the oxygen-enriched membrane bags. The air outlet pipe is connected to the manifold through the connecting ports, and the air outlet is used to connect to a gas collection component.

[0017] The oxygen-enriched module disclosed in the second aspect of this utility model has similar beneficial effects to the oxygen-enriched membrane bag disclosed in the first aspect, and will not be described again here.

[0018] These features and advantages of this utility model will be disclosed in detail in the following specific embodiments and accompanying drawings. The preferred embodiments or means of this utility model will be shown in detail in conjunction with the accompanying drawings, but this is not intended to limit the technical solution of this utility model. In addition, each of these features, elements and components appearing in the following text and drawings is multiple and is labeled with different symbols or numbers for convenience, but all represent parts with the same or similar structure or function. Attached Figure Description

[0019] The present invention will be further described below with reference to the accompanying drawings:

[0020] Figure 1 This is an exploded view of the structure of an oxygen-enriched membrane bag according to one embodiment of the present invention;

[0021] Figure 2 This is an overall outline view of an oxygen-enriched membrane bag according to one embodiment of the present invention;

[0022] Figure 3 This is a cross-sectional schematic diagram of an oxygen-enriched membrane bag according to one embodiment of the present invention;

[0023] Figure 4 This is a structural diagram of a support component according to one embodiment of the present invention;

[0024] Figure 5 This is a schematic diagram of the diaphragm structure according to one embodiment of the present invention;

[0025] Figure 6 This is a schematic diagram of the alignment state during the installation process of the diaphragm and the bracket according to one embodiment of the present invention;

[0026] Figure 7 This is a schematic diagram of the assembly process of the diaphragm and the support in one embodiment of the present invention;

[0027] Figure 8 This is a schematic diagram of the oxygen-enriched module structure according to one embodiment of the present invention;

[0028] Figure 9 This is a schematic diagram of the structure of an oxygen-enriched membrane assembly in a related technology.

[0029] in,

[0030] 1. Oxygen-enriched membrane bag;

[0031] 10. Bag body; 11. First side; 12. Second side; 13. Third side; 14. Fourth side; 15. Membrane; 151. Through hole;

[0032] 20. Bracket; 21. Air outlet pipe; 211. Through hole; 212. Air outlet channel; 22. Support assembly; 221. Support plate; 222. Wire mesh plate; 223. Edge protector; 23. Seal; 24. Silicone gasket;

[0033] 30. Manifold; 31. Manifold hole; 32. Air outlet. Detailed Implementation

[0034] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described are intended to explain this utility model and should not be construed as limiting it.

[0035] The terms "an embodiment," "example," or "trademark" used in this specification refer to a particular feature, structure, or characteristic described in connection with the embodiment itself that may be included in at least one embodiment disclosed in this utility model. The phrase "in an embodiment" appearing in various places throughout the specification does not necessarily refer to the same embodiment.

[0036] See appendix Figures 1 to 8 The first aspect of this utility model discloses an oxygen-enriched membrane bag 1, including a support 20 and a bag body 10 made of an oxygen-enriched membrane. The bag body 10 is closed and defines an inner cavity. The support 20 includes a support component 22 and an air outlet pipe 21. The support component 22 is disposed in the inner cavity of the bag body 10 and is used to open the bag body 10 from the inner cavity. A portion of the air outlet pipe 21 is located in the inner cavity, and another portion of the air outlet pipe passes through the bag body 10 and extends to the outside of the bag body 10. The intersection of the air outlet pipe and the bag body 10 is sealed. The air outlet pipe 21 is used to connect the inner cavity of the bag body 10 with the external space of the bag body 10.

[0037] The oxygen-enriched membrane bag 1 in this embodiment is generally used in oxygen generators or high-altitude oxygen supplementation equipment.

[0038] The oxygen-enriched membrane bag 1 is a bag body 10 structure with a closed cavity made of oxygen-enriched membrane sheet 15. In actual installation, external air is filtered through the oxygen-enriched membrane bag 1 to form oxygen-enriched air, which is then taken from the inner cavity of the bag body 10.

[0039] During use, the air outlet 212 of the oxygen-enriched membrane bag 1 is typically connected to the inhalation component of an oxygen concentrator or supplemental oxygen equipment. Under suction, negative pressure easily forms inside the bag body 10. Without the support component 22, the two surfaces of the flexible bag body 10 would stick together, hindering gas absorption. In this embodiment, the oxygen-enriched membrane bag 1 includes a support 20 and a bag body 10. The support 20 includes a support component 22 and an air outlet pipe 21. The support component 22 is used to expand the bag body 10. Through its structure, the support component 22 keeps the inner cavity of the bag body 10 in an expanded state, which helps improve inhalation efficiency.

[0040] In this embodiment, a portion of the air outlet pipe 21 is disposed within the inner cavity of the bag body 10, and the other portion of the air outlet pipe 21 extends out of the bag body 10, as shown in the attached figure. Figure 2 As shown, compared to the structure of the oxygen-enriched membrane bag 1 in the related technology that penetrates through the center of the two opposite surfaces of the membrane bag, the oxygen-enriched membrane bag 1 in this embodiment only needs to set a sealing structure at the position where the air outlet pipe 21 penetrates through the bag body 10. However, the structure of the air outlet channel 212 penetrating through the two opposite surfaces of the membrane bag requires sealing structures to be set at the penetration points of the two surfaces, which is more complicated.

[0041] Furthermore, in related technologies, the air outlet channel 212 penetrates the two opposite surfaces of the membrane bag. When there are multiple membrane bags, the connection between the multiple membrane bags is a series structure. See Appendix. Figure 9 As shown, when one of the film bags needs to be replaced (for example, when the film bag in the middle needs to be replaced), it may be necessary to remove multiple film bags at the same time, which is quite cumbersome.

[0042] In this embodiment, the air outlet channel 212 is located on the side of the membrane bag. When there are multiple oxygen-enriched membrane bags 1, the multiple oxygen-enriched membrane bags 1 can form as shown in the attached figure. Figure 8 The parallel structure shown makes it easier to replace individual membrane bags in actual setups without affecting the normal operation of other membrane bags, thus improving replacement efficiency.

[0043] It should be noted that the location of the air outlet tube extending out of the bag body mentioned in this embodiment is not specifically limited (the bag body in this embodiment is generally a flat structure). In actual installation, the air outlet tube 21 can extend from the surface of the bag body 10 or from the side. In addition, when it extends from the side, it can be the longer side or the shorter side of the bag body 10. For example, when the bag body 10 is circular, the air outlet tube 21 can be set at any position on the edge of the bag body 10.

[0044] Furthermore, in this embodiment, there is no specific limitation on the exact location of the air outlet pipe 21 on the first side 11. For example, it can be located in the middle of the first side 11 or in other locations away from the middle.

[0045] In this embodiment, there is no specific limitation on how the bag body 10 made of oxygen-enriched membrane is formed. In actual setting, the bag body 10 in this embodiment can be formed by connecting two membrane sheets 15 together, or it can be formed by folding and connecting one membrane sheet 15.

[0046] This embodiment does not specifically limit the specific structure of the bracket 20. The present invention describes the specific structure of the support component 22 in detail through the following two specific embodiments of the bracket 20.

[0047] First, see appendix. Figure 1 The vent pipe 21 is configured as a tube structure with a certain length, wherein the second end of the vent pipe 21 extends toward the second side 12 in the inner cavity of the bag body 10, the second side 12 is opposite to the first side 11, and the vent cavity 212 passes through the first end and the second end of the vent pipe 21. The support assembly 22 includes a plurality of support plates 221, which are spaced apart along the extension direction of the vent pipe 21. The first end of the support plate 221 is fixedly connected to the vent pipe 21, and the second end of the support plate 221 extends toward the side of the bag body 10.

[0048] In this embodiment, the bag body 10 is supported by multiple support plates 221. The multiple support plates 221 are arranged at intervals along the extension direction of the air outlet pipe 21. On the other hand, the structure of each support plate 221 has a certain extension direction. In this way, the multiple support plates 221 together form a structure with a certain coverage area (generally matching the size of the inner cavity of the bag body 10). The bag body 10 is sleeved on the outside of the multiple support plates 221 and supported.

[0049] In this embodiment, the multiple support plates 221 can be divided into two groups, see Appendix Figure 1 Two sets of support plates 221 are respectively arranged on opposite sides of the air outlet pipe 21 (in actual installation, the two sets of support plates 221 can be arranged symmetrically or staggered, and there is no specific limitation). The second end of the support plate 221 extends to the side of the bag body 10 on the corresponding side. A through hole 211 communicating with the air outlet cavity 212 is formed on the side wall of the air outlet pipe 21. The through hole 211 is arranged in the interval between adjacent support plates 221.

[0050] In this embodiment, by opening a through hole 211 on the air outlet pipe 21, the filtered air in different areas of the bag body 10 can quickly enter the air outlet channel 212 through the through hole 211 at the corresponding position during the air intake process, thereby improving the air intake efficiency.

[0051] In actual installation, along the direction of the two opposite surfaces of the bag body 10, the thickness of the first end of the support plate 221 is greater than the thickness of the second end of the support plate 221, so as to support the bag body 10 to a structure in which the middle region of the bag body 10 bulges outwards from the opposite side region. See Appendix Figure 1 By setting the support plate 221 structure, a sloping support structure is formed from the side to the middle of the bag body 10. This reduces the space that the side of the bag body 10 is supported, making it easier for the two oxygen-enriched membrane surfaces of the bag body 10 to come together and making the connection more convenient.

[0052] Second, see appendix. Figure 4 The support component 22 includes a wire mesh plate 222, the cross-section of which is wavy. In actual installation, it can also be set to other shapes, such as serrated or other undulating structures.

[0053] Furthermore, along the direction of the two opposite surfaces of the bag body 10, the amplitude of the middle part of the wire mesh plate 222 is greater than the amplitude of the two sides of the wire mesh plate 222, so as to stretch the bag body 10 to a structure in which the middle region of the bag body 10 bulges out relative to the side region.

[0054] The support assembly 22 also includes a guard 223, which is arranged around the outer edge of the wire mesh plate 222, and the air outlet pipe 21 is fixedly connected to the guard 223.

[0055] In this embodiment, the wire mesh 222 is generally a structure with gaps formed by steel wire weaving, which helps the flow of the cavity inside the bag body 10. The wire mesh 222 is set as a wavy structure. At the crests and troughs of the wave, the wire mesh 222 abuts against the inner surface of the bag body 10 to form support. In order to avoid damaging the oxygen-enriched membrane, the crests and troughs of the wire mesh 222 can be set as arc-shaped transition structures to achieve a better support effect.

[0056] In addition, in order to ensure that the sides of the bag body 10 can be easily fixed, the wavy structure of the wire mesh plate 222 along the two opposite surfaces of the bag body 10 also forms a structure in which the thickness in the middle is greater than the thickness on the side (the thickness here refers to the distance between the crest and the trough).

[0057] As one embodiment of this utility model, see the appendix. Figure 1 , 2 The bag body 10 includes a first side 11 and a second side 12 opposite to each other along a first direction, and a third side 13 and a fourth side 14 opposite to each other along a second direction. The first direction and the second direction intersect. The first end of the air outlet pipe 21 passes through the first side 11. The support plate 221 is fixedly connected to the air outlet pipe 21. The four edges of the support assembly 22 extend toward the first side 11, the second side 12, the third side 13 and the fourth side 14 respectively.

[0058] In this embodiment, the air outlet pipe 21 is located on the first side, as shown in the attached figure. Figure 2 As shown, this helps to reduce space and facilitate the arrangement of oxygen-enriched modules when forming them.

[0059] Furthermore, the vent pipe 21 can be located at the center of the first side 11, or it can be located at a position offset from the center of the first side 11. (See attached image) Figure 2 As shown, this is an embodiment in which the air outlet pipe 21 is located in the middle of the first side 11. In this way, the overall structure of the oxygen-enriched membrane bag 1 is more symmetrical and aesthetically pleasing. The support component 22 can also be set as a symmetrical structure, so the support plate 221 can be set to the same specification, which is convenient for production. The four edges of the support component 22 correspond to the four sides of the bag body 10, which can better support the bag body 10.

[0060] In one embodiment of the present invention, the bag body 10 is formed by folding an oxygen-enriched membrane 15. The first side 11 of the bag body 10 is formed by folding the oxygen-enriched membrane 15 in half. The second side 12, the third side 13 and the fourth side 14 are respectively sealed and connected by the edges of the folded and stacked oxygen-enriched membrane 15 to form a sealed inner cavity of the bag body 10.

[0061] In this embodiment, the air outlet channel 212 of the oxygen-enriched membrane bag 1 is located on the side, which also makes the forming of the bag body 10 more convenient. Specifically, see attached... Figure 5 As shown, the raw material for forming the bag body 10 is a membrane sheet 15 (generally square). A through hole 151 is provided in the center of the membrane sheet 15. During production, the support 20 is placed on one side of the surface of the membrane sheet 15, and the air outlet pipe 21 passes through the membrane sheet 15 through this through hole 151. See Appendix Figure 6 The membrane 15 is wrapped around the support assembly 22. The first side 11 of the bag body 10 is formed by folding the membrane 15 in half. No fixing is required between the two layers. After folding the membrane 15 (usually in the middle), the membrane 15 forms two layers (located on the top and bottom sides of the support assembly 22, respectively). See attached diagram. Figure 7 After the two layers of membrane 15 are wrapped around the support component 22, the corresponding edge positions (second side 12, third side 13 and fourth side 14) are fixedly connected to form a bag structure 10 that wraps the support component 22.

[0062] The connection between the edges of the upper and lower membranes 15 can be fixed by bonding, welding or pressing, as long as a circumferentially closed sealed connection structure can be formed.

[0063] In this embodiment, the air outlet 212 of the oxygen-enriched membrane bag 1 is located on the side. When forming the membrane bag, it can be prepared by using a single membrane sheet 15 using the above method. Compared with the related technology, which requires two membrane sheets 15 connected to their four sides respectively, this simplifies the production process and improves production efficiency.

[0064] As one embodiment of this utility model, see the appendix. Figure 3 , 4 The oxygen-enriched membrane bag 1 includes a sealing element, which is sealed to the first end of the air outlet pipe 21 to seal the gap between the air outlet pipe 21 and the mating part of the bag body 10.

[0065] In this embodiment, the sealing element is used to seal the mating gap where the air outlet pipe 21 passes through the bag body 10. In actual installation, the sealing element can be set as a sealing nut. In actual installation, the sealing structure can also include a silicone gasket 24. A threaded structure that cooperates with the sealing nut is provided on the outer wall of the air outlet pipe 21. The sealing nut and the first end of the air outlet pipe 21 are threadedly connected, and the silicone gasket 24 is pressed tightly onto the diaphragm 15.

[0066] Of course, it is conceivable that in actual settings, other sealing structures can be used, such as compression sealing, radial sealing, etc.

[0067] In addition, in actual installation, a sealing mating step can be set on the air outlet pipe 21. The sealing nut presses a part of the diaphragm 15 and the silicone gasket 24 tightly onto the sealing mating step to improve the sealing effect.

[0068] See appendix Figure 8 The second aspect of this utility model discloses an oxygen-enriched module. The oxygen-enriched membrane bag 1 adopts the oxygen-enriched membrane bag 1 of the second aspect. The manifold 30 has a mating interface, a manifold hole 31 and an air outlet 32 ​​formed on it. The air outlet 32 ​​and the mating interface are connected through the manifold hole 31. The mating interface is used to connect with the air outlet pipe 21. The air outlet 32 ​​is used to connect with the gas collection component. The manifold 30 is connected to the air outlet pipes 21 of a plurality of oxygen-enriched membrane bags 1 respectively. The air outlet cavity 212 of the air outlet pipe 21 is connected to the manifold hole 31.

[0069] In this embodiment, the manifold 30 has a manifold hole 31, an air outlet 32, and multiple connection ports. Each connection port corresponds to one oxygen-enriched membrane bag 1. In this way, multiple oxygen-enriched membrane bags 1 are connected into one unit through the manifold 30, as shown in the attached figure. Figure 8 As shown, the multiple oxygen-enriched membrane bags 1 are connected in parallel, so that a single oxygen-enriched membrane bag 1 can be replaced individually without affecting the operation of other oxygen-enriched membrane bags 1. For the interface where no oxygen-enriched membrane bag 1 is connected, it can be sealed with a cap.

[0070] In this embodiment, the manifold 30 gathers the gas from multiple oxygen-enriched membrane bags 1 into one channel through the manifold hole 31, which helps to improve the oxygen extraction efficiency.

[0071] The above are merely specific embodiments of this utility model, but the scope of protection of this utility model is not limited thereto. Those skilled in the art should understand that this utility model includes, but is not limited to, the contents described in the accompanying drawings and the specific embodiments above. Any modifications that do not depart from the functional and structural principles of this utility model will be included within the scope of the claims.

Claims

1. An oxygen-enriched membrane bag, comprising a support (20) and a bag body (10) made of an oxygen-enriched membrane, said bag body (10) closing and defining an inner cavity, characterized in that, The bracket (20) includes a support assembly (22) and an air outlet pipe (21). The support assembly (22) is disposed in the inner cavity of the bag body (10) and is used to open the bag body (10) from the inner cavity. A part of the air outlet pipe (21) is located in the inner cavity, and the other part of the air outlet pipe passes through the bag body (10) and extends to the outside of the bag body (10). The intersection of the air outlet pipe and the bag body (10) is sealed. The air outlet pipe (21) is used to connect the inner cavity of the bag body (10) with the external space of the bag body (10).

2. The oxygen-enriched membrane bag according to claim 1, characterized in that, The support assembly (22) includes multiple support plates (221), which are spaced apart along the extension direction of the air outlet pipe (21). The first end of the support plate (221) is fixedly connected to the air outlet pipe (21), and the second end of the support plate (221) extends toward the side of the bag body (10).

3. The oxygen-enriched membrane bag according to claim 2, characterized in that, The multiple support plates (221) are divided into two groups, and the two groups of support plates (221) are respectively arranged on opposite sides of the air outlet pipe (21). The second end of the support plate (221) extends to the side of the bag body (10) on the corresponding side. The inner cavity of the air outlet pipe (21) is formed as an air outlet channel (212). A through hole (211) communicating with the air outlet channel (212) is formed on the side wall of the air outlet pipe (21). The through hole (211) is arranged in the interval between adjacent support plates (221).

4. The oxygen-enriched membrane bag according to claim 2, characterized in that, Along the direction of the two opposite surfaces of the bag body (10), the thickness of the first end of the support plate (221) is greater than the thickness of the second end of the support plate (221) to support the bag body (10) to a structure in which the middle region of the bag body (10) bulges out relative to the side region.

5. The oxygen-enriched membrane bag according to claim 1, characterized in that, The support component (22) includes a wire mesh plate (222) with a wavy cross section.

6. The oxygen-enriched membrane bag according to claim 5, characterized in that, Along the direction of the two opposite surfaces of the bag body (10), the amplitude of the middle part of the wire mesh plate (222) is greater than the amplitude of the two sides of the wire mesh plate (222), so as to stretch the bag body (10) to a structure in which the middle region of the bag body (10) bulges out relative to the side region.

7. The oxygen-enriched membrane bag according to any one of claims 1 to 6, characterized in that, The bag body (10) includes a first side (11) and a second side (12) opposite to each other along a first direction, and a third side (13) and a fourth side (14) opposite to each other along a second direction. The first direction and the second direction intersect. The first end of the air outlet pipe (21) passes through the first side (11). The support assembly (22) is fixedly connected to the air outlet pipe (21). The four edges of the support assembly (22) extend toward the first side (11), the second side (12), the third side (13) and the fourth side (14) respectively.

8. The oxygen-enriched membrane bag according to claim 7, characterized in that, The bag body (10) is formed by folding an oxygen-enriched membrane (15). The first side (11) of the bag body (10) is formed by folding the oxygen-enriched membrane (15) in half. The second side (12), the third side (13) and the fourth side (14) are respectively sealed and connected by the edges of the folded and stacked oxygen-enriched membrane (15) to form a closed inner cavity of the bag body (10).

9. The oxygen-enriched membrane bag according to any one of claims 1 to 6, characterized in that, The oxygen-enriched membrane bag (1) includes a sealing element (23), which is threadedly connected to the portion of the air outlet pipe (21) extending out of the bag body (10) to seal the intersection of the air outlet pipe (21) and the bag body (10).

10. An oxygen-enriched module, comprising a manifold (30) and a plurality of oxygen-enriched membrane bags (1), characterized in that, The oxygen-enriched membrane bag (1) is the oxygen-enriched membrane bag (1) according to any one of claims 1 to 9. A manifold (30) is formed in the manifold cavity (31). The cavity wall of the manifold is provided with an air outlet (32) communicating with the manifold cavity (31) and a plurality of interfaces. The plurality of interfaces correspond one-to-one with the oxygen-enriched membrane bag (1). The air outlet pipe (21) is connected to the manifold (30) through the interfaces. The air outlet (32) is used to connect to the gas collection component.

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