Gas separation module, refrigerator and air conditioning apparatus

Abstract

The application discloses a gas separation module, a refrigerator and an air treatment device, wherein a fan is directly arranged in a membrane shell, external connecting pipelines are omitted, and the overall volume is greatly reduced; air flow generated when the fan operates can fully contact each hollow fiber membrane tube in a hollow fiber membrane bundle, separation area is increased, gas enters the inside of each hollow fiber membrane tube, and then is drawn away through an air port or an air hole, so that more effective gas separation is realized in a small structure size, and separation effect is improved.

Description

Technical Field

[0001] This application relates to the field of air treatment technology, and in particular to a gas separation module, a refrigerator, and an air conditioning device. Background Technology

[0002] Gas separation technology is widely used in food preservation, medical respiration, industrial nitrogen production, and environmental protection. Among these, membrane gas separation has become a rapidly developing separation method in recent years due to its advantages such as compact structure, low energy consumption, no moving parts, and simple maintenance. A typical membrane separation device usually includes a membrane shell, separation membrane modules, and a power system (such as a fan or compressor) to drive the airflow, achieving the separation of gases such as oxygen, nitrogen, and carbon dioxide through the principle of selective permeation.

[0003] However, existing membrane gas separation modules still have shortcomings in their structural design: 1. Traditional devices often separate the fan from the separation chamber and connect them through external pipelines, resulting in a large overall size, complex airflow path, and large pressure loss, which affects the separation efficiency.

[0004] 2. Uneven airflow distribution between the fan and membrane module can easily cause excessively high local flow velocity or dead zones on the membrane surface, reducing membrane utilization efficiency and accelerating membrane aging. Utility Model Content

[0005] The purpose of this application is to provide a gas separation module, a refrigerator, and an air conditioning device to improve at least one of the above-mentioned problems.

[0006] The embodiments of this application can be implemented as follows: In a first aspect, this utility model provides a gas separation module, comprising: The membrane shell has an air inlet and multiple air pores; The fan is located inside the membrane housing; A modified atmosphere membrane module is disposed inside a membrane shell. The modified atmosphere membrane module includes a hollow fiber membrane bundle, which is composed of multiple hollow fiber membrane tubes arranged in a row. One end of the hollow fiber membrane bundle is inserted into the air port.

[0007] In an optional embodiment, the membrane shell is provided with a partition, which divides the internal space of the membrane shell into a separation chamber and an air chamber. The partition is provided with an air inlet and an air outlet that are connected to the separation chamber and the air chamber. The air inlet and the air hole are both connected to the separation chamber.

[0008] In an optional embodiment, the modified atmosphere membrane assembly is located within the separation chamber and simultaneously covers both the air inlet and the air outlet; The fan is located inside the air cavity, and the negative pressure side of the fan faces the air inlet.

[0009] In an optional embodiment, the fan is a centrifugal fan, which is located inside the air cavity near the cavity wall; The air inlet is directly opposite the negative pressure side of the centrifugal fan.

[0010] In an optional embodiment, the air outlet includes multiple elongated holes arranged in parallel.

[0011] In an optional embodiment, the elongated hole extends in a curved, wavy shape along its length.

[0012] In an optional embodiment, the membrane shell further has a partition beam disposed within the air cavity, the partition beam dividing the separation cavity into two independent sub-air cavities; The partition is provided with an air inlet and an air outlet in the area corresponding to each of the sub-cavities; Each of the sub-cavities is equipped with a fan.

[0013] In an optional embodiment, the two sub-air cavities on both sides of one of the partition beams are respectively a first sub-air cavity and a second sub-air cavity; the air inlet and the air outlet connecting the first sub-air cavity are respectively a first air inlet and a first air outlet; the air inlet and the air outlet connecting the second sub-air cavity are respectively a second air inlet and a second air outlet. The first air inlet and the second air inlet are staggered along the length of the partition beam; The first air outlet and the second air outlet are staggered along the length of the partition beam.

[0014] In an optional embodiment, the membrane shell includes a bottom shell and a cover plate detachably connected to the bottom shell, the side wall of the bottom shell is provided with the air vent, and the cover plate is provided with a plurality of air holes; The partition is disposed inside the bottom shell and is parallel to the bottom wall of the bottom shell. The air cavity is formed between the partition and the bottom wall of the bottom shell, and the separation cavity is formed between the partition and the cover plate.

[0015] In an optional embodiment, under the action of the fan, the air inlet can transport the air inside the membrane shell to the outside, and the plurality of air holes can transport the air outside the membrane shell to the inside.

[0016] Secondly, this utility model provides a refrigerator, including the gas separation module described in any of the foregoing embodiments.

[0017] Thirdly, this utility model provides an air conditioning device, including the gas separation module described in any of the foregoing embodiments. The air conditioning device includes an air purifier, an air conditioner, an air system, a fresh air device, a car, a fish tank, a mask, or a water purifier.

[0018] Compared with the prior art, the beneficial effects of the embodiments of this application include, for example: The fan is directly installed inside the membrane housing, eliminating the need for external connecting pipes and significantly reducing the overall size. This makes it easy to embed in space-constrained applications such as cold chain equipment, refrigerated display cases, and medical instruments. The airflow generated by the fan during operation can fully contact each hollow fiber membrane tube in the hollow fiber membrane bundle, increasing the separation area. The gas enters the interior of each hollow fiber membrane tube and is then drawn away through the air inlet or outlet, achieving more effective gas separation with a small structural size and improving the separation effect. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the specific embodiments of this application or the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0020] Figure 1 This is one of the schematic diagrams of the gas separation module in this embodiment; Figure 2 This is the second schematic diagram of the gas separation module in this embodiment; Figure 3 for Figure 2 BB cross-sectional view; Figure 4 This is one of the exploded views of the gas separation module in this embodiment; Figure 5 This is the second exploded view of the gas separation module in this embodiment; Figure 6 To be Figure 1 and Figure 2 A schematic diagram showing the middle cover plate after it has been concealed; Figure 7 To be Figure 6 A schematic diagram showing the partition after it has been concealed; Figure 8 A line graph showing the oxygen concentration-time for the gas separation module used for oxygenation. Figure 9 This is a line graph showing the oxygen concentration over time for the gas separation module used for oxygen removal.

[0021] Icons: 100-Membrane shell; 110-Separation chamber; 120-Air chamber; 121-First sub-air chamber; 122-Second sub-air chamber; 130-Bottom shell; 131-Air inlet; 140-Cover plate; 141-Air vent; 150-Divider beam; 200-Fan; 300-Divider plate; 310-Air inlet; 311-First air inlet; 312-Second air inlet; 320-Air outlet; 321-Elongated hole; 322-First air outlet; 323-Second air outlet; 400-Air shell; 410-Air nozzle. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0023] Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0024] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0025] In the description of this application, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this application is in use. They are only for the convenience of describing this application and 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, and therefore should not be construed as a limitation on this application. In addition, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0026] Furthermore, terms such as "horizontal," "vertical," and "sag" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0027] In the description of this application, it should also be noted that, unless otherwise expressly specified and limited, the terms "set up," "install," "connect," and "link" 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 connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0028] The following detailed description of some embodiments of this application is provided in conjunction with the accompanying drawings. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0029] Nitrogen and oxygen molecules in the atmosphere diffuse at different rates in a dense polymer film due to differences in polarity and molecular size. Therefore, under pressure, if air is forced through a specially designed membrane structure, a significant difference in nitrogen and oxygen concentrations will occur on both sides of the membrane. Utilizing this principle and phenomenon, nitrogen and oxygen can be separated or enriched under normal conditions using membrane materials and the components formed therefrom.

[0030] Based on the above principles, this application discloses a gas separation module that can be applied to refrigerators for oxygen removal or other air handling equipment that requires oxygen control (deoxygenation or oxygenation), such as air purifiers, air conditioners (wall-mounted, ducted, and cabinet units), air systems, fresh air devices, automobiles, fish tanks, masks, water purifiers, and any other equipment that requires oxygenation.

[0031] When deoxygenation is required, the gas separation module is placed inside the chamber where deoxygenation is needed, and its exhaust port is connected to the outside. In this way, the gas inside the chamber can be separated into oxygen-rich gas by the gas separation module and discharged to the outside of the chamber, thus realizing the deoxygenation function of the chamber.

[0032] When oxygenation is needed, the gas separation module is placed outside the oxygenation chamber, and the exhaust port of the gas separation module is connected to the internal space of the chamber. In this way, the oxygen-enriched gas formed after being processed by the gas separation module can be discharged into the chamber to realize the oxygenation function of the chamber.

[0033] For example, after treating the outdoor air or the indoor polluted air (filtering, purifying, and enriching oxygen), the oxygen-rich air is introduced into the room to maintain the indoor oxygen content at a healthy level, or to make the indoor oxygen content slightly higher, thereby improving the mental state of people working and living indoors.

[0034] For example, reducing or removing the oxygen content in the normal atmosphere of a sealed cavity reduces the reaction between the sealed materials, such as vegetables, fruits, important cultural relics, and documents, and the oxygen, thereby avoiding the adverse effects of oxidation on the sealed contents.

[0035] For details, please refer to the following: Figure 1 and Figure 2 The gas separation module mainly includes a membrane housing 100, a fan 200, and a controlled atmosphere membrane assembly (not shown).

[0036] The membrane housing 100 has an air inlet 131 and multiple air pores 141; The blower 200 is installed inside the membrane housing 100; The modified atmosphere membrane module is located inside the membrane shell 100. The modified atmosphere membrane module includes a hollow fiber membrane bundle, which is composed of multiple hollow fiber membrane tubes arranged in a row. One end of the hollow fiber membrane bundle is inserted into the air port 131.

[0037] In this way, the blower 200 is directly installed inside the membrane housing 100, eliminating the need for external connecting pipes and significantly reducing the overall volume. The airflow generated by the blower 200 during operation can fully contact each hollow fiber membrane tube in the hollow fiber membrane bundle, increasing the separation area. The gas enters the interior of each hollow fiber membrane tube and is then drawn away through the air port 131 or the air hole 141, achieving more efficient gas separation with a small structural size and improving the separation effect.

[0038] The membrane housing 100 is provided with a partition 300, which divides the internal space of the membrane housing 100 into a separation chamber 110 and an air chamber 120. The partition 300 is provided with an air inlet 310 and an air outlet 320 that are connected to the separation chamber 110 and the air chamber 120. The air inlet 131 and the air hole 141 are both connected to the separation chamber 110. The modified atmosphere membrane is located in the separation chamber 110 and simultaneously covers the air inlet 310 and the air outlet 320. The fan 200 is located inside the air cavity 120, and the negative pressure side of the fan 200 faces the air inlet 310.

[0039] In this way, the blower 200 is directly installed in the air cavity 120 inside the membrane housing 100 and is connected to the separation chamber 110 through the inlet and outlet 320 on the partition 300. The negative pressure side of the blower 200 faces the inlet 310 directly, which can quickly establish a stable negative pressure in the separation chamber 110, driving the gas to be separated to enter the separation chamber 110 from the air hole 141. At the same time, the modified atmosphere membrane module covers the inlet 310 and the outlet 320, so that the airflow must pass through the surface of the membrane module evenly, avoiding local high-speed scouring or flow dead zones, ensuring that all areas of the membrane surface participate in the separation process, improving the utilization efficiency of the membrane material, and extending its service life.

[0040] It should be noted that the phrase "the modified atmosphere membrane module covers the air inlet 310 and the air outlet 320" mentioned above refers to the modified atmosphere module being located at the positions corresponding to the air inlet 310 and the air outlet 320, and roughly covering them, since the modified atmosphere module is composed of multiple arranged hollow fiber membrane tubes. However, since there are gaps between the multiple arranged hollow fiber membrane tubes, it does not mean that the air inlet 310 and the air outlet 320 are completely covered.

[0041] By setting a partition 300 inside the membrane housing 100 to physically isolate the air cavity 120 from the separation cavity 110, the air cavity 120 and the separation cavity 110 are connected only through the air inlet and outlet 320, which effectively prevents unseparated gas from directly entering the fan 200 or separated gas from flowing back, ensuring separation purity and process controllability.

[0042] It is understood that one of the air inlet 131 or the air vent 141 is used as the air intake side and the other as the air exhaust side. This embodiment does not make specific restrictions on whether the air inlet 131 or 141 is used as the air intake side. In actual use, the air intake side can be flexibly selected according to the needs.

[0043] The membrane housing 100 has a roughly rectangular hollow structure, making it easy to embed into the regular space of equipment such as refrigerators and air conditioners. (Ref.) Figures 3 to 5 The membrane housing 100 includes a bottom shell 130 and a cover plate 140 that is detachably connected (such as by screws, clips or sealing strips) to the open side of the bottom shell 130. The bottom shell 130 is a box-shaped structure with one side open and can be made of metal or engineering plastics (such as ABS, PPS, etc.). An air port 131 is provided on the side wall of the bottom shell 130 to facilitate the intake of air to be treated, the discharge of separated gas, or the injection of oxygen-enriched / nitrogen-enriched gas into the target space. The cover plate 140 is provided with a plurality of air holes 141 for the intake of air to be treated, the discharge of separated gas, or the injection of oxygen-enriched / nitrogen-enriched gas into the target space.

[0044] The partition 300 is disposed inside the bottom shell 130 and is parallel to the bottom wall of the bottom shell 130. A wind cavity 120 is formed between the partition 300 and the bottom wall of the bottom shell 130, and a separation cavity 110 is formed between the partition 300 and the cover plate 140.

[0045] In this way, the membrane housing 100 adopts a detachable connection between the bottom shell 130 and the cover plate 140, which facilitates the independent assembly and subsequent maintenance of each functional component. During production, the fan 200, the baffle 300, and the controlled atmosphere membrane module can be installed sequentially from the bottom shell 130 side; during use, only the cover plate 140 needs to be removed to replace the controlled atmosphere membrane module or clean the air vents 141, without the need to disassemble the entire module, reducing maintenance costs and downtime.

[0046] If the vent 141 is used as the air intake side, then, under the action of the fan 200, the air inlet 131 can transport the air inside the membrane housing 100 to the outside, and the multiple vents 141 can transport the air outside the membrane housing 100 to the inside.

[0047] The air vent 141 is located on the cover plate 140, and the air port 131 is located on the side wall of the bottom shell 130. This top-in and side-out airflow layout separates the air intake and exhaust directions, effectively avoiding airflow short-circuiting or backflow, ensuring that fresh air continuously enters the separation chamber 110, and improving gas exchange efficiency.

[0048] The multiple air holes 141 on the cover plate 140 are arranged in an array (such as a rectangular, rhomboid, or hexagonal array), covering a large area and being evenly distributed. This allows external air to enter the separation chamber 110 simultaneously from multiple symmetrical positions, avoiding localized flow deviation or eddies. This ensures consistent air intake across all areas of the controlled atmosphere membrane module surface, improving the utilization efficiency and separation stability of the controlled atmosphere membrane module. The array-type multi-hole air intake design disperses the total air intake volume into multiple small holes, reducing the air velocity at each individual air hole 141. This reduces the adsorption of dust, hair, and other particles by the high-speed airflow, preventing the air holes 141 from becoming clogged. Simultaneously, it reduces intake noise, improving the quiet operation of the equipment.

[0049] One end of the hollow fiber membrane bundle is sealed to the inner wall of the air inlet 131 (for example, by using a sealing ring or by heat fusion or adhesive bonding to ensure airtightness). In this way, the airflow generated by the blower 200 passing through the controlled atmosphere membrane assembly can fully contact each hollow fiber membrane tube in the hollow fiber membrane bundle, increasing the separation area.

[0050] Optionally, the modified atmosphere membrane module includes multiple hollow fiber membrane bundles, with the portion of each hollow fiber membrane bundle extending into the air port 131 arranged uniformly, so that the gas can fully contact the membrane wall as it travels from the inside of each hollow fiber membrane tube to the air port 131.

[0051] Of course, it is understood that the modified atmosphere membrane module is not limited to the hollow fiber membrane bundles mentioned above. For example, in some embodiments, it can also be a flat sheet membrane, etc.

[0052] Continue to refer to Figures 3 to 5The fan 200 is a centrifugal fan, located inside the air chamber 120 near the chamber wall; the air inlet 310 is directly opposite the negative pressure side of the centrifugal fan 200. In this configuration, the centrifugal fan 200 draws in air along its rotation axis and exits air radially, resulting in a relatively flat volume. Positioning it near the chamber wall within the air chamber 120 fully utilizes the side space of the membrane housing 100, avoiding excessive volume in the central area. This allows for greater design freedom in the layout of the partition 300, air outlet 320, and controlled atmosphere membrane assembly, achieving efficient space utilization and a compact structure. The air inlet 310 is directly opposite the negative pressure side of the fan 200, forming the shortest path negative pressure conduction channel. This allows the fan 200 to quickly establish a stable negative pressure in the separation chamber 110 after startup, driving the gas to be treated to pass quickly through the controlled atmosphere membrane, improving the module's dynamic response speed and processing capacity per unit time. The air flowing out from the positive pressure side (i.e., the outlet side) of the centrifugal fan 200 passes through the air chamber 120 and the air outlet 320 in sequence to flush the controlled atmosphere membrane, achieving continuous separation.

[0053] It should be noted that in some embodiments, the fan 200 is not limited to the centrifugal fan 200 described above. Those skilled in the art can adapt the type of fan 200 according to the specific application scenario, and achieve optimized matching in terms of performance, size, noise, cost, etc., while meeting the gas separation function. For example, an axial flow fan 200 may have a certain gap between its positive pressure side and the bottom wall of the bottom shell 130 so that the airflow can pass smoothly through the air outlet 320.

[0054] refer to Figure 6 The air outlet 320 includes multiple parallel elongated holes 321, forming a large-area air outlet channel. This increases the total effective flow area of ​​the air outlet 320, reduces the flow resistance of gas entering the air chamber 120 from the separation chamber 110, improves the gas processing capacity per unit time, and enhances the separation efficiency. Each elongated hole 321 extends along a certain length, forming a linear air outlet, allowing gas to be evenly discharged from the downstream of the controlled atmosphere membrane module along multiple parallel paths. This avoids the point-like concentrated flow caused by traditional small circular orifice air outlets, effectively eliminates local high-speed zones or stagnant zones, and ensures highly uniform airflow distribution on the membrane module surface.

[0055] The elongated orifice 321 extends in a curved, wavy direction along its length. This allows the gas to be guided slightly along the curved surface of the orifice 321 as it flows out of the air chamber 120, forming an asymmetric, multi-directional micro-vortex mixing effect. This promotes lateral disturbance and uniform mixing of airflow in different areas, avoids laminar stratification or local flow deviation, further improves the uniformity of airflow distribution through the controlled atmosphere membrane, and ensures the stable operation of the controlled atmosphere membrane throughout its entire range.

[0056] Of course, it is understood that in some embodiments, the shape of the elongated orifice 321 is not limited to the aforementioned curved and wavy extension. Those skilled in the art can adapt the extension shape of the elongated orifice 321 according to actual application requirements, while ensuring the flow area and structural strength, in order to achieve different performance focuses or manufacturing process adaptations. For example, straight, arc, zigzag, spiral, swirling, bifurcated (a single elongated orifice 321 branches into multiple branches during the extension process to form a tree-like or mesh-like structure), and variable width elongated orifice 321 (such as narrow at both ends and wide in the middle).

[0057] refer to Figure 3 and Figure 7 The membrane housing 100 also has a partition beam 150 disposed in the air cavity 120, which divides the separation cavity 110 into two independent sub-air cavities 120; the partition plate 300 is provided with an air inlet 310 and an air outlet 320 corresponding to the area of ​​each sub-air cavity 120; and a fan 200 is provided in each sub-air cavity 120.

[0058] Thus, by dividing the membrane into two sub-cavities 120 by the partition beam 150, the size of a single air duct can be reduced, making the working area of ​​each fan 200 more concentrated, the airflow more uniform, and improving the overall utilization rate of the membrane module. At the same time, the partition beam 150, as an internal reinforcing rib, can effectively improve the overall structural strength of the membrane shell 100, reduce shell resonance during the operation of the fan 200, reduce structural noise, and improve quietness performance.

[0059] Two sub-air chambers 120 on both sides of a partition beam 150 are respectively the first sub-air chamber 121 and the second sub-air chamber 122; the air inlet 310 and the air outlet 320 connecting the first sub-air chamber 121 are respectively the first air inlet 311 and the first air outlet 322; the air inlet 310 and the air outlet 320 connecting the second sub-air chamber 122 are respectively the second air inlet 312 and the second air outlet 323. The first air inlet 311 and the second air inlet 312 are staggered along the length of the partition beam 150; The first air outlet 322 and the second air outlet 323 are staggered along the length of the partition beam 150.

[0060] This staggered distribution design separates the air inlet and outlet areas of the two sets of air ducts, promoting lateral flow and local disturbance of gas on the surface of the modified atmosphere membrane (for example, the airflow in the air cavity 120 enters the separation chamber 110 from the first outlet 322, then flows laterally along the thickness direction of the partition beam 150 into the second inlet 312, and then passes through the air cavity 120, the second outlet 323 and the first inlet 311 in sequence). This increases the number of times the airflow circulates through the local area of ​​the modified atmosphere membrane, while preventing dead zones from forming in the edge or corner areas. This ensures that all areas of the large-size membrane can participate efficiently in the separation process, prolongs the flow path of gas in the separation chamber 110, and increases the contact time and contact area between the gas and the modified atmosphere membrane.

[0061] In this embodiment, the length direction of the partition beam 150 and the extension direction of the elongated hole 321 are both along the length direction of the membrane housing 100. This layout makes full use of the long side space of the membrane housing 100 and avoids the width direction crowding caused by lateral occupation. It is particularly suitable for narrow and long installation spaces (such as the side wall of a refrigerator or the edge of an air conditioning duct) to achieve compact integration. Moreover, since the controlled atmosphere membrane module (such as hollow fiber membrane bundle) is usually arranged with its length direction parallel to the long side of the membrane housing 100, the elongated hole 321 extends along the length direction and can be consistent with the direction of the membrane bundle to ensure that the gas is discharged evenly along the length of the membrane. The unidirectional extension of the partition beam 150 also avoids interference with the installation of the membrane module and improves the assembly accuracy.

[0062] It should be noted that although the illustrated embodiment has only one partition beam 150 dividing the air chamber 120 into two sub-air chambers 120, this application is not limited thereto. Those skilled in the art can adaptively adjust the number and layout of the partition beam 150 according to the actual performance requirements of the gas separation module, the installation space dimensions, and the air volume handling capacity.

[0063] For example, in other embodiments, multiple parallel partition beams 150 may be provided in the air cavity 120 to divide the air cavity 120 into three or more independent sub-air cavities 120; each sub-air cavity 120 is provided with a fan 200, an air inlet 310 and an air outlet 320, forming a multi-channel parallel airflow architecture; the partition beams 150 between adjacent sub-air cavities 120 may be distributed at equal or non-equal intervals to adapt to asymmetrical spaces or differentiated air volume requirements.

[0064] In addition, the extension direction of the partition beam 150 is not limited to the length of the membrane shell 100. It can also be arranged along the width or in a grid pattern to form a two-dimensional partition structure, depending on the layout of the fan 200 and the optimization of the airflow path.

[0065] Continue to refer to Figures 1 to 4 In this embodiment, the gas separation module also includes a gas shell 400, which is an independent structural component used to enhance the sealing and connection function of the gas extraction channel.

[0066] Specifically, the bottom shell 130 of the membrane housing 100 has an air port 131 on its side wall, and the side wall extends outward in the area where the air port 131 is located to form a cylindrical or columnar extension. The air housing 400 is fitted onto the extension by an interference fit, a snap-fit ​​structure or fasteners and is sealed to it.

[0067] The air housing 400 is provided with an air nozzle 410, which is coaxially connected with the air port 131 in the extension section to form a continuous air passage from the inside to the outside of the membrane housing 100.

[0068] The air nozzle 410 is used to connect an external air pump (such as a vacuum pump, centrifugal fan 200 or other negative pressure source). When the air pump is running, a negative pressure is established on the permeate side of the modified atmosphere membrane module, driving fast gas components such as oxygen to pass through the membrane wall and be directionally extracted through the hollow fiber membrane bundle, air port 131 and air nozzle 410, so as to realize the continuous discharge of oxygen-enriched gas.

[0069] A sealing ring or gasket can be installed between the gas shell 400 and the extension section to ensure airtightness at the connection and prevent cross-contamination of raw material gas and permeate gas.

[0070] The gas separation module of this embodiment is connected to a compressor. Under the action of driving force, nitrogen and oxygen are separated in the atmosphere by the gas separation module, and the oxygen is enriched and then introduced into an empty room with an area of ​​25 square meters. An oxygen testing device is placed in the room to monitor the indoor oxygen content in real time. After 24 hours, the oxygen concentration in the room reaches approximately 25%; the testing time is extended to 72 hours, and the indoor oxygen content is maintained at around 28% (reference). Figure 8 ).

[0071] A nitrogen-oxygen separation module, driven by a small vacuum pump, was installed in a 30L sealed chamber according to this embodiment. The oxygen content within the sealed chamber was measured in real-time over time using an oxygen concentration monitoring device, resulting in the data shown in the graph above. It can be seen that a small nitrogen-oxygen separation module can reduce the oxygen content to approximately 10% within 2 hours (reference). Figure 9 At this concentration, fruits and vegetables are well preserved inside the chamber.

[0072] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A gas separation module, characterized in that, include: The membrane shell (100) has an air inlet (131) and multiple air pores (141). A fan (200) is disposed inside the membrane housing (100); wherein, the two fans (200) are respectively located on both sides of the central axis of the membrane housing (100) in the longitudinal direction, and the distances between the two fans (200) and the air inlet (131) are different; A modified atmosphere membrane assembly is disposed within the membrane shell (100). The modified atmosphere membrane assembly includes a hollow fiber membrane bundle, which is composed of multiple hollow fiber membrane tubes arranged in a row. One end of the hollow fiber membrane bundle is inserted into the air port (131).

2. The gas separation module according to claim 1, characterized in that, The membrane shell (100) is provided with a partition (300), which divides the internal space of the membrane shell (100) into a separation chamber (110) and an air chamber (120). The partition (300) is provided with an air inlet (310) and an air outlet (320) that are connected to the separation chamber (110) and the air chamber (120). The air inlet (131) and the air hole (141) are both connected to the separation chamber (110).

3. The gas separation module according to claim 2, characterized in that, The modified atmosphere membrane is located in the separation chamber (110) and simultaneously covers the air inlet (310) and the air outlet (320). The fan (200) is located inside the air cavity (120), and the negative pressure side of the fan (200) faces the air inlet (310).

4. The gas separation module according to claim 3, characterized in that, The fan (200) is a centrifugal fan (200), which is located inside the air cavity (120) near the cavity wall; The air inlet (310) is directly opposite the negative pressure side of the centrifugal fan (200).

5. The gas separation module according to claim 4, characterized in that, The air outlet (320) includes multiple elongated holes (321) arranged in parallel.

6. The gas separation module according to claim 5, characterized in that, The elongated hole (321) extends in a curved, wavy shape along its length.

7. The gas separation module according to claim 3, characterized in that, The membrane shell (100) also has a partition beam (150) disposed in the air cavity (120), the partition beam (150) dividing the separation cavity (110) into two independent sub-air cavities (120). The partition (300) is provided with an air inlet (310) and an air outlet (320) in the area corresponding to each of the sub-cavities (120). Each of the sub-cavities (120) is equipped with a fan (200).

8. The gas separation module according to claim 7, characterized in that, The two sub-air chambers (120) on both sides of the partition beam (150) are respectively the first sub-air chamber (121) and the second sub-air chamber (122); the air inlet (310) and the air outlet (320) connecting the first sub-air chamber (121) are respectively the first air inlet (311) and the first air outlet (322); the air inlet (310) and the air outlet (320) connecting the second sub-air chamber (122) are respectively the second air inlet (312) and the second air outlet (323). The first air inlet (311) and the second air inlet (312) are staggered along the length of the partition beam (150); The first air outlet (322) and the second air outlet (323) are staggered along the length of the partition beam (150).

9. The gas separation module according to claim 3, characterized in that, The membrane shell (100) includes a bottom shell (130) and a cover plate (140) detachably connected to the bottom shell (130). The side wall of the bottom shell (130) is provided with the air port (131), and the cover plate (140) is provided with a plurality of air holes (141). The partition (300) is disposed inside the bottom shell (130) and parallel to the bottom wall of the bottom shell (130). The air cavity (120) is formed between the partition (300) and the bottom wall of the bottom shell (130), and the separation cavity (110) is formed between the partition (300) and the cover plate (140).

10. The gas separation module according to claim 1, characterized in that, Under the action of the fan (200), the air inlet (131) can transport the air inside the membrane shell (100) to the outside, and the multiple air holes (141) can transport the air outside the membrane shell (100) to the inside.

11. A refrigerator, characterized in that, Includes the gas separation module according to any one of claims 1-10.

12. An air conditioning device, characterized in that, The air conditioning device includes the gas separation module according to any one of claims 1-10, and includes an air purifier, air conditioner, air system, fresh air device, automobile, fish tank, mask or water purifier.

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