Oxygen enriched membrane module and oxygen enriched device

Abstract

The utility model relates to an oxygen production technical field especially relates to a kind of oxygen-enriched membrane component and oxygen-enriched device, oxygen-enriched membrane component includes oxygen-enriched membrane, oxygen-enriched membrane is formed with the tubular structure with cross section being wave shape around;First end cover, first end cover is wave-shaped and with the one end cooperation of oxygen-enriched membrane, the one end of oxygen-enriched membrane is sealedly connected with first end cover, and gas passage is set up on first end cover;Second end cover, second end cover is wave-shaped and with the other end cooperation of oxygen-enriched membrane, and oxygen-enriched membrane is sealedly connected with second end cover.The utility model can reduce the gathering of nitrogen-rich air, guarantee oxygen-enriched efficiency.

Description

Technical Field

[0001] This utility model relates to the field of oxygen production technology, and in particular to an oxygen-enriched membrane module and an oxygen-enriched device. Background Technology

[0002] In the field of civilian oxygen production, oxygen enrichment devices have a wide range of applications. For example, tourists and construction workers in Tibet need portable oxygen enrichment devices to alleviate altitude sickness. Elderly people at home can use them to improve their breathing. Car oxygen enrichment can also improve the comfort of people in the car. Oxygen-enriched air conditioners can increase the oxygen concentration in enclosed spaces and maintain stable blood oxygen concentration.

[0003] The oxygen-enriched membrane module is a core component in an oxygen-enriched device. Traditional oxygen-enriched membrane modules are mostly spiral wound modules, which require film winding and adhesive application, as well as a custom-made outer shell, resulting in a complex structure and high manufacturing costs. The above statements are only used to provide background information related to this application and do not necessarily constitute prior art. Utility Model Content

[0004] The purpose of this invention is to provide an oxygen-enriched membrane component and an oxygen-enriched device that can reduce the accumulation of nitrogen-enriched air and ensure oxygen-enrichment efficiency.

[0005] To achieve this objective, the present invention adopts the following technical solution:

[0006] Oxygen-enriched membrane module, including:

[0007] An oxygen-enriched membrane sheet, wherein the oxygen-enriched membrane sheet is arranged in a cylindrical structure with a wavy cross-section;

[0008] The first end cap is wavy and matches one end of the oxygen-enriched membrane. One end of the oxygen-enriched membrane is sealed to the first end cap. The first end cap has an air vent.

[0009] The second end cap is wavy and mates with the other end of the oxygen-enriched membrane, and the oxygen-enriched membrane is sealed to the second end cap.

[0010] In some embodiments, a support body is further included, which passes through the cylindrical structure and communicates with the vent, and the support body has a hollow structure.

[0011] In some embodiments, the hollow structure is a spiral structure.

[0012] In some embodiments, the first end cap has a first positioning groove with a wave pattern, and the crest of the oxygen-enriched membrane is inserted into the first positioning groove; the second end cap has a second positioning groove with a wave pattern, and the crest of the other end of the oxygen-enriched membrane is inserted into the second positioning groove.

[0013] In some embodiments, a connecting pipe is further included, the connecting pipe being disposed on the side of the first end cap away from the oxygen-enriched membrane, and the connecting pipe communicating with the vent.

[0014] In some embodiments, the connecting pipe is a tapered pipe, and the diameter of the connecting pipe gradually decreases along the direction away from the vent.

[0015] In some embodiments, a first positioning ring is provided at one end of the first end cap facing the oxygen-enriched membrane, and one end of the support body cooperates with the first positioning ring; a second positioning ring is provided at one end of the second end cap facing the oxygen-enriched membrane, and the other end of the support body cooperates with the second positioning ring.

[0016] In some embodiments, a support strip is further included, one end of which is connected to the first end cap and the other end of which is connected to the second end cap. Multiple support strips are spaced apart at the crests of the oxygen-enriched membrane to support the crests of the oxygen-enriched membrane and prevent them from collapsing.

[0017] In some embodiments, the peak height of the oxygen-enriched membrane is not less than 10 mm.

[0018] An oxygen enrichment device includes a vacuum pump and an oxygen enrichment membrane assembly as described above, wherein the vacuum pump is in communication with a vent in a first end cap of the oxygen enrichment membrane assembly.

[0019] The beneficial effects of this utility model are:

[0020] This utility model provides an oxygen-enriched membrane assembly, in which the oxygen-enriched membrane sheet is arranged in a corrugated shape to form a cylindrical structure. A first end cap is corrugated and mates with one end of the oxygen-enriched membrane sheet, sealing the first end cap with the first end cap. A second end cap is corrugated and mates with the other end of the oxygen-enriched membrane sheet, sealing the second end cap with the oxygen-enriched membrane sheet. During oxygen production using the oxygen-enriched membrane assembly, outside air passes through the oxygen-enriched membrane sheet to separate oxygen. The separated oxygen is discharged through a vent. Because the oxygen-enriched membrane sheet is arranged in a corrugated shape to form a cylindrical structure, sufficient membrane area is ensured for oxygen separation, and the cylindrical design saves space. By rationally designing both the first and second end caps to be corrugated, they can fit well with the oxygen-enriched membrane sheet, eliminating gaps between the membrane sheet and the first and second end caps, thereby preventing the accumulation of nitrogen-enriched air and ensuring oxygen enrichment efficiency.

[0021] The present invention provides an oxygen enrichment device, including a vacuum pump and an oxygen enrichment membrane assembly as described above, which can reduce the accumulation of nitrogen-enriched air and ensure oxygen enrichment efficiency. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments of this utility model will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the content of the embodiments of this utility model and these drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of removing part of the oxygen-enriching membrane sheet in an oxygen-enriching membrane assembly according to the present invention;

[0024] Figure 2 This is a schematic diagram of the support body in an oxygen-enriched membrane assembly according to this utility model;

[0025] Figure 3 This is a schematic diagram of the first end cap in an oxygen-enriched membrane assembly according to the present invention;

[0026] Figure 4 This is a schematic diagram of the second end cap and support strip in an oxygen-enriched membrane assembly according to this utility model.

[0027] In the picture:

[0028] 1. Oxygen-enriched membrane; 11. Crest; 12. Trough; 2. Support body; 21. Spiral groove; 3. First end cap; 31. First positioning groove; 32. Vent; 33. Connecting pipe; 34. First positioning ring; 35. First crest; 36. First trough; 4. Second end cap; 41. Second positioning groove; 42. Second positioning ring; 43. Second crest; 44. Second trough; 5. Support strip. Detailed Implementation

[0029] Before explaining any implementation of this application in detail, it should be understood that this application is not limited to its application to the structural details and component arrangements set forth in the following description or shown in the above drawings.

[0030] In this application, the terms "comprising," "including," "having," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element.

[0031] In this application, the terms "connection," "combination," "coupling," and "installation" can refer to direct connection, combination, coupling, or installation, or indirect connection, combination, coupling, or installation. For example, a direct connection refers to two parts or components being connected together without the need for an intermediary, while an indirect connection refers to two parts or components each being connected to at least one intermediary, with the connection achieved through the intermediary. Furthermore, "connection" and "coupling" are not limited to physical or mechanical connections or couplings, but can also include electrical connections or couplings.

[0032] In this application, those skilled in the art will understand that the function performed by a component can be performed by one component, multiple components, one part, or multiple parts. Similarly, the function performed by a part can also be performed by one part, one component, or a combination of multiple parts.

[0033] In this application, the directional terms "upper," "lower," "left," "right," "front," and "rear" are used to describe the orientation and positional relationships shown in the accompanying drawings and should not be construed as limiting the embodiments of this application. Furthermore, in the context, it should be understood that when an element is mentioned as being connected "upper" or "lower" to another element, it can be directly connected to the other element "upper" or "lower," or indirectly connected through an intermediate element. It should also be understood that directional terms such as upper side, lower side, left side, right side, front side, and rear side not only represent positive orientation but can also be understood as lateral orientation. For example, "below" can include directly below, lower left, lower right, lower front, and lower rear.

[0034] Oxygen-enriched membrane modules, employing a design similar to air filter cartridges, eliminate the need for a central tube and custom-designed housing. This addresses the issues of complex manufacturing processes and small membrane area inherent in traditional oxygen-enriched membrane modules. However, their circular end cap design introduces a dead zone for gas flow, causing nitrogen-enriched air to accumulate at the membrane-end cap connection point and become impossible to purge, severely impacting oxygen enrichment efficiency. Furthermore, the lack of central support in these cartridge-based oxygen-enriched membrane modules means that under strong negative pressure, the folded membranes deform and compress inwards into the permeate side space, resulting in a simultaneous decrease in both oxygen flux and concentration.

[0035] When using oxygen-enriched membrane modules for oxygen separation, in order to reduce the accumulation of nitrogen-enriched air, ensure oxygen enrichment efficiency, and improve pressure resistance under strong negative pressure, such as... Figures 1-4 As shown, this utility model provides an oxygen-enriched membrane assembly. The oxygen-enriched membrane assembly includes an oxygen-enriched membrane sheet 1, a first end cap 3, and a second end cap 4.

[0036] The oxygen-enriched membrane 1 is arranged in a corrugated cross-section to form a cylindrical structure. The first end cap 3 is corrugated and mates with one end of the oxygen-enriched membrane 1, sealing one end of the membrane. The first end cap 3 has a vent 32 that communicates with the support body 2. The second end cap 4 is corrugated and mates with the other end of the oxygen-enriched membrane 1, sealing the membrane. Specifically, the corrugated membrane 1 has peaks 11, with troughs 12 formed between adjacent peaks 11. The first end cap 3 has a first peak 35, with a first trough 36 formed between adjacent first peaks 35. The second end cap 4 has a second peak 43, with a second trough 36 formed between adjacent second peaks 43. The engagement of one end of the oxygen-enriched membrane 1 with the first end cap 3 means that the trough 12 of the oxygen-enriched membrane 1 corresponds to the first trough 36 of the first end cap 3, forming a channel along the axial direction of the oxygen-enriched membrane assembly. Similarly, the engagement of the other end of the oxygen-enriched membrane 1 with the second end cap 4 means that the trough 12 of the oxygen-enriched membrane 1 corresponds to the second trough 44 of the second end cap 4, forming a channel along the axial direction of the oxygen-enriched membrane assembly. When nitrogen gas located around the oxygen-enriched membrane assembly is discharged along the axial direction of the oxygen-enriched membrane assembly, the nitrogen gas can flow and be discharged along the axial channel formed by the first trough 36 and the second trough 44, preventing nitrogen gas from accumulating between the oxygen-enriched membrane 1 and the first end cap 3, and between the oxygen-enriched membrane 1 and the second end cap 4, thus ensuring the efficiency of nitrogen purging.

[0037] Because the oxygen-enriched membrane 1 is arranged in a wave-like cylindrical structure, it can ensure sufficient membrane area for oxygen separation, and the cylindrical design saves space. Through the rational design of the first end cap 3 and the second end cap 4, the first trough 36 and the second trough 44 that cooperate with the oxygen-enriched membrane 1 are both wave-like, which can effectively cooperate with the oxygen-enriched membrane 1, eliminating gaps between the oxygen-enriched membrane 1 and the first end cap 3 and the second end cap 4, and forming a channel for nitrogen gas passage in the axial direction of the oxygen-enriched component, thereby avoiding the accumulation of nitrogen-enriched air and ensuring oxygen enrichment efficiency.

[0038] It should be noted that the cross-section of the oxygen-enriched membrane 1 refers to the plane that is sealed and connected to the first end cap 3 or the second end cap 4. A waveform refers to a shape unit composed of multiple peaks 11 and multiple troughs 12, which can also be understood as a shape unit with multiple protrusions and grooves. The shapes of the peaks 11 (protrusions) and troughs 12 (grooves) can be arc-shaped (fan-shaped), have a certain angle, or be other shapes. For example, the peaks 11 may be arc-shaped (fan-shaped), and the troughs 12 may form an acute angle; or both peaks 11 and troughs 12 may be arc-shaped (fan-shaped); or both peaks 11 and troughs 12 may form an acute angle; or both peaks 11 and troughs 12 may form an obtuse angle, etc. The shapes of the multiple peaks 11 in the waveform can be completely identical or different, and the shapes of the multiple troughs 12 in the waveform can be completely identical or different.

[0039] The cylindrical structure formed by the oxygen-enriched membrane 1 is not particularly limited and can be a cylindrical structure, a quadrilateral cylindrical structure, a pentagonal cylindrical structure, a hexagonal cylindrical structure, etc.

[0040] In some embodiments, the first end cap 3, the second end cap 4, and the oxygen-enriched membrane 1 can be sealed together by adhesive bonding. Precise adhesive sealing improves the convenience and accuracy of assembly while ensuring a tight seal.

[0041] In some embodiments, the oxygen-enriched membrane assembly further includes a support body 2, which is inserted into the cylindrical structure and communicates with the vent 32, and the support body 2 has a perforated structure. The support body 2 helps to strengthen the support for the oxygen-enriched membrane 1, enhance the pressure-bearing capacity of the oxygen-enriched membrane 1 under strong negative pressure, and the perforated structure of the support body 2 ensures the flow of oxygen to the vent 32.

[0042] In some embodiments, the perforated structure is spiral-shaped. The spiral structure acts as a guide, allowing the separated oxygen to smoothly enter the vent 32 along the spiral structure.

[0043] In some embodiments, the spiral structure is a single or multiple spiral grooves 21.

[0044] In some embodiments, the spiral structure comprises multiple spiral grooves 21, which are spaced apart along the axial direction of the support 2. The spiral grooves 21 serve to guide airflow, allowing oxygen separated by the oxygen-enriching membrane 1 to smoothly enter the support 2 and, under the action of the vacuum pump, flow unidirectionally along the spiral grooves 21 to the vent 32, preventing oxygen backflow from affecting the oxygen enrichment efficiency. Furthermore, the spiral grooves 21 reduce the weight of the support 2.

[0045] In some embodiments, the first end cap 3 has a wave-shaped first positioning groove 31, and the second end cap 4 has a wave-shaped second positioning groove 41. The crest 11 of the oxygen-enriched membrane 1 is inserted into the first positioning groove 31, and similarly, the crest 11 of the other end of the oxygen-enriched membrane 1 is inserted into the second positioning groove 41. By providing the first positioning groove 31 and the second positioning groove 41, it is convenient to position and install the first end cap 3 and the second end cap 4 with the oxygen-enriched membrane 1, and the accuracy and stability of the first end cap 3 and the second end cap 4 after being joined with the oxygen-enriched membrane 1 can be guaranteed.

[0046] In some embodiments, the oxygen-enriched membrane assembly further includes a connecting pipe 33, which is fixedly disposed on the side of the first end cap 3 facing away from the oxygen-enriched membrane sheet 1, and the connecting pipe 33 communicates with the vent 32. By providing the connecting pipe 33, it is convenient to connect to the vacuum pump later, thereby achieving rapid assembly.

[0047] In some embodiments, the connecting pipe 33 is a tapered tube, with its diameter gradually decreasing along the direction away from the vent 32. Specifically, the connecting pipe 33 is 10mm-20mm higher than the first end cap 3, and its diameter gradually decreases along the direction away from the center of the first end cap 3, facilitating connection with the vacuum pump and ensuring sealing under negative pressure. To further improve the stability of the connection with the vacuum pump, the vacuum pump's suction port is connected to the connecting pipe 33 via a flexible hose. The outer circumferential surface of the connecting pipe 33 has barbed protrusions to ensure that the hose and connecting pipe 33 do not easily separate after connection.

[0048] In some embodiments, a first positioning ring 34 is fixedly disposed at the end of the first end cap 3 facing the oxygen-enriched membrane 1, and one end of the support body 2 cooperates with the first positioning ring 34. By providing the first positioning ring 34 to cooperate with the support body 2, it is convenient to position and install the support body 2. Specifically, the support body 2 can be inserted into the first positioning ring 34 or sleeved on the first positioning ring 34; no further restrictions are imposed. Furthermore, by providing the first positioning ring 34, it is possible to prevent glue from clogging the vent 32. A second positioning ring 42 is fixedly disposed at the end of the second end cap 4 facing the oxygen-enriched membrane 1, and the other end of the support body 2 cooperates with the second positioning ring 42. By providing the second positioning ring 42 to cooperate with the support body 2, it is convenient to position and install the support body 2. Specifically, the support body 2 can be inserted into the second positioning ring 42 or sleeved on the second positioning ring 42; no further restrictions are imposed.

[0049] In some embodiments, the oxygen-enriched membrane 1 includes a membrane body and a supporting substrate, wherein the membrane body and the supporting substrate are combined. This configuration allows the membrane body to be supported by a strong supporting substrate, thereby ensuring that the oxygen-enriched membrane 1 has good oxygen enrichment efficiency and impact resistance. The supporting substrate, which does not have gas separation properties, can be a material with a certain degree of rigidity, such as PP mesh, filter paper, or non-woven fabric.

[0050] In some embodiments, the oxygen-enriched membrane assembly further includes support bars 5, one end of which is connected to the first end cap 3, and the other end of which is connected to the second end cap 4. Multiple support bars 5 are spaced apart at the crests 11 of the cylindrical oxygen-enriched membrane sheet 1 to support the crests 11 of the oxygen-enriched membrane sheet 1 and prevent them from collapsing. By providing support bars 5, the oxygen-enriched membrane sheet 1 can be supported, thereby further enhancing the pressure resistance of the oxygen-enriched membrane sheet 1 under high negative pressure.

[0051] In some embodiments, the height of the crest 11 of the oxygen-enriched membrane 1 is not less than 10 mm. The height of the crest 11 is the maximum vertical distance from the crest 11 to the line connecting two adjacent troughs 12. This configuration ensures that the oxygen-enriched membrane 1 has a large membrane area, thereby guaranteeing oxygen separation efficiency.

[0052] The working principle of this oxygen-enriched membrane module is as follows:

[0053] Outside air enters the oxygen-enriched membrane module as the raw material gas source. Driven by a vacuum pump, oxygen permeates through the folded oxygen-enriched membrane 1 and flows out through the vent 32 of the first end cap 3, achieving oxygen enrichment. Because the first end cap 3 and the second end cap 4 fit perfectly with the shape of the oxygen-enriched membrane 1, gas can flow smoothly on the outer surface of the membrane 1, avoiding dead zones and preventing the accumulation of nitrogen-enriched air. Simultaneously, the precise alignment and sealing of the oxygen-enriched membrane 1 with the first end cap 3 and the second end cap 4 ensure good sealing and assembly of the oxygen-enriched membrane module.

[0054] This embodiment also provides an oxygen enrichment device, which includes a vacuum pump and an oxygen enrichment membrane assembly as described above. The vacuum pump is connected to the vent 32 of the first end cap 3 in the oxygen enrichment membrane assembly, which can reduce the accumulation of nitrogen-enriched air, ensure oxygen enrichment efficiency, and improve the pressure resistance under strong negative pressure.

[0055] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. An oxygen-enriched membrane module, characterized in that, include: Oxygen-enriched membrane (1), wherein the oxygen-enriched membrane (1) is arranged in a cylindrical structure with a wavy cross section; The first end cap (3) is wavy and matches one end of the oxygen-enriched membrane (1). One end of the oxygen-enriched membrane (1) is sealed to the first end cap (3). The first end cap (3) has an air vent (32). The second end cap (4) is wavy and matches the other end of the oxygen-enriched membrane (1), and the oxygen-enriched membrane (1) is sealed to the second end cap (4).

2. The oxygen-enriched membrane module according to claim 1, characterized in that, It also includes a support body (2), which is inserted into the cylindrical structure and communicates with the vent (32), and the support body (2) has a hollow structure.

3. The oxygen-enriched membrane module according to claim 2, characterized in that, The hollow structure is spiral-shaped.

4. The oxygen-enriched membrane module according to claim 1, characterized in that, The first end cap (3) has a first positioning groove (31) in the shape of a wave, and the crest (11) of the oxygen-enriched membrane (1) is inserted into the first positioning groove (31); The second end cap (4) has a wave-shaped second positioning groove (41), and the peak (11) of the other end of the oxygen-enriched membrane (1) is inserted into the second positioning groove (41).

5. The oxygen-enriched membrane module according to claim 1, characterized in that, It also includes a connecting pipe (33), which is disposed on the side of the first end cap (3) away from the oxygen-enriched membrane (1), and the connecting pipe (33) is connected to the vent (32).

6. The oxygen-enriched membrane module according to claim 5, characterized in that, The connecting pipe (33) is a tapered pipe, and the diameter of the connecting pipe (33) gradually decreases along the direction away from the vent (32).

7. The oxygen-enriched membrane module according to claim 2, characterized in that, The first end cap (3) is provided with a first positioning ring (34) at one end facing the oxygen-enriched membrane (1), and one end of the support (2) is engaged with the first positioning ring (34); the second end cap (4) is provided with a second positioning ring (42) at one end facing the oxygen-enriched membrane (1), and the other end of the support (2) is engaged with the second positioning ring (42).

8. The oxygen-enriched membrane module according to claim 1, characterized in that, It also includes support strips (5), one end of which is connected to the first end cap (3), and the other end of which is connected to the second end cap (4). Multiple support strips (5) are spaced apart at the crests (11) of the oxygen-enriched membrane (1) to support the crests (11) of the oxygen-enriched membrane (1) and prevent them from collapsing.

9. The oxygen-enriched membrane module according to claim 1, characterized in that, The height of the peak (11) of the oxygen-enriched membrane (1) is not less than 10 mm.

10. An oxygen-enriching device, characterized in that, Includes a vacuum pump and an oxygen-enriched membrane assembly as described in any one of claims 1-9, wherein the vacuum pump is connected to a vent (32) of the first end cap (3) in the oxygen-enriched membrane assembly.

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