Integrated airway of oxygen generator and oxygen generator

Abstract

The invention provides an oxygen generator and an integrated air passage thereof, the integrated air passage of the oxygen generator comprises an air passage shell, the air passage shell is internally provided with at least two of a purging cavity, an oxygen storage cavity and an oxygen outlet cavity which are not communicated with each other, and under the condition that the air passage shell comprises the purging cavity, the oxygen storage cavity is communicated with the oxygen outlet cavity; a first air outlet, a second air outlet and a first air inlet which are communicated with the purging cavity and the outside atmosphere are formed in the air channel shell; under the condition that the air passage shell comprises the oxygen storage cavity, a second air inlet, a third air inlet, a third air outlet and a fourth air outlet which are communicated with the external atmosphere and the oxygen storage cavity are formed in the air passage shell; under the condition that the air passage shell comprises the oxygen outlet cavity, a fourth air inlet and a fifth air outlet which are communicated with the external atmosphere and the oxygen outlet cavity are formed in the air passage shell. By applying the technical scheme provided by the invention, the problem that an oxygen generator product in the prior art is easy to fail can be effectively solved.

Description

Technical Field

[0001] This invention relates to the field of medical devices, and more specifically, to an integrated airway for an oxygen concentrator and the oxygen concentrator itself. Background Technology

[0002] Portable oxygen concentrators use physical pressure swing adsorption (PSA) technology. The principle of oxygen production is mainly to use an air compressor to pass oxygen and nitrogen in the air through a molecular sieve. By utilizing the difference in the adsorption capacity of the molecular sieve for nitrogen and oxygen in the air, nitrogen and oxygen are separated, thereby extracting a high concentration of oxygen.

[0003] Miniaturization and lightweight design are the development trends of portable oxygen concentrators, and also reflect the growing consumer demand. However, this trend towards miniaturization and lightweight design has also brought about a series of problems.

[0004] Defects and shortcomings of existing technology:

[0005] 1. During the operation of the portable oxygen concentrator, the two molecular sieve tanks alternately generate oxygen and expel nitrogen. Because the airflow control is complex, many air pipes are required to meet the technical requirements. The air pipe paths are long and the air paths need to bend. Bending can easily cause air path blockage, which becomes one of the factors causing product failure.

[0006] 2. During the operation of a portable oxygen concentrator, the airflow in the airway is mainly high-pressure gas. High-pressure gas requires high sealing performance, and the air tube is easy to detach from the connector, becoming another factor causing product failure. Summary of the Invention

[0007] The main objective of this invention is to provide an integrated airway and oxygen generator for an oxygen concentrator, in order to solve the problem of easy failure in existing oxygen concentrator products.

[0008] To achieve the above objectives, according to one aspect of the present invention, an integrated airway for an oxygen generator is provided, comprising: an airway shell, wherein at least two of a purge chamber, an oxygen storage chamber, and an oxygen outlet chamber are disposed therewith, wherein, when the airway shell includes a purge chamber, the airway shell is provided with a first outlet, a second outlet, and a first inlet communicating with the purge chamber and the outside atmosphere; when the airway shell includes an oxygen storage chamber, the airway shell is provided with a second inlet, a third inlet, a third outlet, and a fourth outlet communicating with the outside atmosphere and the oxygen storage chamber; when the airway shell includes an oxygen outlet chamber, the airway shell is provided with a fourth inlet and a fifth outlet communicating with the outside atmosphere and the oxygen outlet chamber.

[0009] In one embodiment, the first air outlet, the second air outlet, the third air outlet, the first air inlet, the second air inlet, the third air inlet, and the fourth air inlet are located on the shell wall on the same side of the air passage shell.

[0010] In one embodiment, when the airway shell includes a purge chamber and an oxygen storage chamber, a first air outlet and a second air outlet are arranged at intervals along a first direction n to form a first flow port group, a second air inlet and a third air inlet are arranged at intervals along the first direction n to form a second flow port group, and a first air inlet and a third air outlet are arranged at intervals along the first direction n to form a third flow port group. The first flow port group, the second flow port group and the third flow port group are arranged at intervals along a second direction m perpendicular to the first direction n.

[0011] In one embodiment, the second direction m is the vertical direction, and the first flow port group, the second flow port group, and the third flow port group are arranged sequentially from top to bottom.

[0012] In one embodiment, if the airway shell also includes an oxygen outlet chamber, the fourth air inlet is located below the third flow port group.

[0013] In one embodiment, the airway shell includes a main body and an extension. If the airway shell includes an oxygen outlet chamber, the oxygen outlet chamber is located within the main body and the extension. The purge chamber and / or the oxygen storage chamber is located within the main body. A fourth air inlet is provided on the main body, and a fifth air outlet is provided on the extension.

[0014] In one embodiment, the main body includes a box body with an opening and a partition plate, the extension includes an extension body and a box cover disposed at the opening, and the partition plate is sandwiched between the box bottom plate of the box body and the box cover, wherein the box cover and the main body are integral structures; or, the box cover, the opening of the box body, and the partition plate are sealed together so that the multiple cavities in the airway shell are not interconnected.

[0015] In one embodiment, the first air outlet, the second air outlet, the third air outlet, the first air inlet, the second air inlet, the third air inlet and the fourth air inlet are located on the bottom plate of the box, and the fourth air outlet is located on the lid of the box.

[0016] In one embodiment, the airway shell is provided with at least one detection hole, which is connected to the outside atmosphere and the oxygen outlet chamber.

[0017] In one embodiment, the integrated airway further includes a first mounting structure for mounting a display device and / or a circuit board.

[0018] According to another aspect of the present invention, an oxygen generator is provided, comprising: a first molecular sieve; a second molecular sieve; a distribution valve assembly having a first outlet and a second outlet communicating with the first and second molecular sieves; and an integrated air passage, wherein the integrated air passage is the integrated air passage of the oxygen generator described above, wherein, when the air passage housing includes a purge chamber, the distribution valve assembly is further provided with a fifth inlet connected to a first outlet, a sixth inlet connected to a second outlet, and a sixth outlet connected to the first inlet; when the air passage housing includes an oxygen storage chamber, the distribution valve assembly is further provided with a seventh outlet connected to the second inlet, an eighth outlet connected to a third inlet, and a seventh inlet connected to the third outlet; and when the air passage housing includes an oxygen outlet chamber, the distribution valve assembly is further provided with a ninth outlet connected to a fourth inlet.

[0019] In one embodiment, a first one-way valve is provided between the first air outlet and the fifth air inlet, a second one-way valve is provided between the second air outlet and the sixth air inlet, a third one-way valve is provided between the second air inlet and the seventh air outlet, and a fourth one-way valve is provided between the third air inlet and the eighth air outlet.

[0020] Applying the technical solution of this invention, when it is necessary to store the oxygen produced by the oxygen concentrator in the oxygen storage tank, the newly produced oxygen from the molecular sieve enters the oxygen storage chamber through the second or third air inlet via the distribution valve assembly, and then flows into the oxygen storage tank through the fourth air outlet, thereby realizing the oxygen storage function of the oxygen concentrator. When it is necessary to provide the oxygen produced by the oxygen concentrator to the user, the newly produced oxygen enters the oxygen outlet chamber through the fourth air inlet via the distribution valve assembly, and then flows out through the fifth air outlet, thereby realizing the function of directly providing oxygen to the user. When one of the molecular sieves needs to be purged of nitrogen, oxygen enters the purge chamber through the first air inlet via the distribution valve assembly, and then the oxygen in the purge chamber flows into the corresponding molecular sieve through the second or first air outlet, thereby purging the nitrogen in the molecular sieve, thus realizing the nitrogen purging function. That is, the portable oxygen concentrator separates oxygen through the molecular sieve body, controls the airflow path through the distribution valve assembly, and connects the integrated air passage to the distribution valve assembly to guide the airflow to the corresponding position to realize the functions of oxygen storage, oxygen supply, and nitrogen purging. In the above structure, by integrating the airway to replace multiple long air pipes, it is possible to effectively avoid airway blockage and reduce the probability of product failure. On the other hand, it can reduce the number of parts, thereby reducing the assembly process.

[0021] In addition to the objectives, features, and advantages described above, the present invention has other objectives, features, and advantages. The invention will now be described in further detail with reference to the figures. Attached Figure Description

[0022] The accompanying drawings, which form part of this specification, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an undue limitation of the invention. In the drawings:

[0023] Figure 1 A three-dimensional structural schematic diagram of an embodiment of the integrated airway of an oxygen generator according to the present invention is shown from one angle.

[0024] Figure 2 It shows Figure 1 A three-dimensional structural diagram of the integrated airway from another angle;

[0025] Figure 3 It shows Figure 1 A cross-sectional view of the integrated airway, in which Figure 3 The purge chamber, oxygen storage chamber, and oxygen outlet chamber are shown.

[0026] Figure 4 It shows Figure 1 A top view of the integrated airway;

[0027] Figure 5 It shows Figure 4 A cross-sectional view of the integrated airway along the AA direction;

[0028] Figure 6 A front view of a partial structure of an oxygen generator according to an embodiment of the present invention is shown;

[0029] Figure 7 It shows Figure 6 A top view of an oxygen concentrator;

[0030] Figure 8 It shows Figure 7 A cross-sectional view of the oxygen concentrator along the BB direction;

[0031] Figure 9 It shows Figure 6 A side view of part of the structure of an oxygen concentrator;

[0032] Figure 10 It shows Figure 9 A cross-sectional view of the oxygen concentrator along the CC direction;

[0033] Figure 11 It shows Figure 9 A three-dimensional structural diagram of the distribution valve assembly of an oxygen concentrator;

[0034] Figure 12 It shows Figure 6 Front view of the distribution valve assembly of an oxygen concentrator equipped with a one-way valve;

[0035] Figure 13 It shows Figure 6A three-dimensional structural diagram of the molecular sieve component of an oxygen generator;

[0036] Figure 14 It shows Figure 13 A magnified structural diagram of point A of the molecular sieve component;

[0037] Figure 15 It shows Figure 13 A schematic diagram of the exploded structure of a molecular sieve component;

[0038] Figure 16 It shows Figure 13 A schematic diagram of the longitudinal section of the molecular sieve assembly;

[0039] Figure 17 It shows Figure 16 A magnified structural diagram of point B of the molecular sieve component;

[0040] Figure 18 It shows Figure 16 A magnified structural diagram of the molecular sieve assembly at point C;

[0041] Figure 19 It shows Figure 13 A schematic diagram of the cross-sectional structure of the molecular sieve assembly;

[0042] Figure 20 It shows Figure 6 A three-dimensional structural diagram of the main unit of an oxygen concentrator;

[0043] Figure 21 A three-dimensional structural schematic diagram of an embodiment of an oxygen generator according to the present invention is shown;

[0044] Figure 22 It shows Figure 21 A schematic diagram of the exploded structure of an oxygen concentrator;

[0045] Figure 23 It shows Figure 21 A three-dimensional structural diagram of the integrated airway on the noise reduction shell of an oxygen concentrator;

[0046] Figure 24 It shows Figure 23 A cross-sectional schematic diagram of the integrated airway;

[0047] Figure 25 It shows Figure 23 A bottom view of the integrated airway;

[0048] Figure 26 It shows Figure 23 A longitudinal section schematic diagram of the integrated airway;

[0049] Figure 27 It shows Figure 21 A longitudinal section diagram of the noise reduction casing of an oxygen concentrator;

[0050] Figure 28 It shows Figure 27 A perspective view of the body of the noise-reducing shell;

[0051] Figure 29 It shows Figure 21 A longitudinal section diagram of an oxygen concentrator;

[0052] Figure 30 It shows Figure 29 A top view of an oxygen concentrator;

[0053] Figure 31 It shows Figure 12 A sectional view of the distribution valve assembly along the DD direction;

[0054] Figure 32 It shows Figure 29 A three-dimensional structural diagram of the gas distribution valve of an oxygen generator.

[0055] Figure 33 It shows Figure 21 A cross-sectional schematic diagram of the one-way valve of an oxygen concentrator;

[0056] Figure 34 It shows Figure 33 A three-dimensional structural diagram of the valve body of a one-way valve; and

[0057] Figure 35 It shows Figure 21 A front view schematic diagram of part of the structure of an oxygen concentrator.

[0058] The above figures include the following reference numerals:

[0059] 1a. First air outlet; 1b. Fifth air inlet; 1c. Air supply path; 1d. First distribution path; 1e. Second distribution path; 1f. Nitrogen exhaust path; 2a. Second air outlet; 2b. Sixth air inlet; 2c. First air inlet; 2d. Fifth overflow port; 2e. Seventh overflow port; 2f. Nitrogen inlet; 3a. First air inlet; 3b. Sixth air outlet; 3c. Air outlet; 3d. Sixth overflow port; 3e. Eighth overflow port; 3f. First nitrogen outlet; 4a. Second air inlet; 4b. Seventh air outlet; 5a. Third air inlet; 5b. Eighth air outlet; 6a. Third air outlet; 6b. Seventh air inlet; 7a. Fourth air outlet; 7b. Ninth air outlet; 8a. Fourth air inlet; 8b. First 9a, Fifth outlet; 9b, Second outlet; 10a, First flow port group; 11a, Second flow port group; 12a, Third flow port group; 1, Adsorption space; 2, First flow port; 3, Second flow port; 4, Third flow port; 5, Fourth flow port; 6, Purge chamber; 7, Oxygen storage chamber; 8, Oxygen outlet chamber; 10, Mounting shell; 11, Guide structure; 12, Clearance hole; 13, Handle; 14, Limiting groove; 20, Molecular sieve; 20a, First molecular sieve; 20b, Second molecular sieve; 21, Molecular sieve shell; 211, Partition plate; 212, Positioning protrusion; 22, Base; 221, Air inlet; 23, Sealing structure; 30, Detachable structure; 40, Elastic structure; 50, Main unit; 51, Main unit Body; 511. Mounting and fitting structure; 512. Guiding and fitting structure; 513. Limiting flange; 52. Baffle; 53. Exhaust pipe; 60. Molecular sieve assembly; 70. Sealing ring; 80. Battery assembly; 90. Outer shell; 91. Flow hole; 911. Inlet channel; 912. Exhaust channel; 92. Annular groove; 93. Chamfer; 100. Valve body; 101. Throttling orifice; 102. Receiving groove; 103. Mounting hole; 110. Elastic valve plate; 120. Fixing handle; 130. One-way valve; 130a. First one-way valve; 130b. Second one-way valve; 130c. Third one-way valve; 130d. Fourth one-way valve; 140. Air passage shell; 141. Main body; 1411. Box body; 1412. Divider plate ; 142. Extension section; 1421. Extension section body; 1422. Cover; 143. Detection hole; 144. First mounting structure; 145. Second mounting structure; 150. Distributor valve assembly; 160. Integrated air passage; 170. Differential pressure sensor; 180. Display device; 190. Base; 191. Cover plate; 192. First extension tube; 1921. First tube body; 1922. First connector; 1923. Second connector; 193. Second extension tube; 1931. Second tube body; 1932. Third connector; 1933. Fourth connector; 194. Overlap structure; 195. Fifth connector; 196. Third extension tube; 1961. Sixth connector; 1962. Seventh connector; 1963. Connecting tube;198. Limiting structure; 200. Housing body; 201. Mounting opening; 210. Integrated air duct cover; 220. Noise reduction housing; 230. Compressor; 240. Gas distribution valve; 241. Second air inlet; 242. First distribution port; 243. Second distribution port; 244. Second nitrogen outlet. Detailed Implementation

[0060] It should be noted that, unless otherwise specified, the embodiments and features described in the present invention can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0061] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present invention.

[0062] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this invention are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such terms can be used interchangeably where appropriate for the embodiments of the invention described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0063] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0064] like Figures 1 to 10As shown, in this embodiment, the integrated airway of the oxygen generator includes: an airway shell 140, which contains a purge chamber 6, an oxygen storage chamber 7, and an oxygen outlet chamber 8 that are not interconnected; the airway shell 140 is provided with a first outlet 1a, a second outlet 2a, and a first inlet 3a that connect the purge chamber 6 to the outside atmosphere; the airway shell 140 is provided with a second inlet 4a, a third inlet 5a, a third outlet 6a, and a fourth outlet 7a that connect the outside atmosphere to the oxygen storage chamber 7; and the airway shell 140 is provided with a fourth inlet 8a and a fifth outlet 9a that connect the outside atmosphere to the oxygen outlet chamber 8.

[0065] Applying the technical solution of this embodiment, when it is necessary to store the oxygen generated by the oxygen generator in the oxygen storage tank, the newly produced oxygen from the molecular sieve enters the oxygen storage chamber 7 through the second inlet 4a or the third inlet 5a via the distribution valve assembly 150, and then flows into the oxygen storage tank through the fourth outlet 7a, thereby realizing the oxygen storage function of the oxygen generator. When it is necessary to provide the oxygen generated by the oxygen generator to the user, the newly produced oxygen enters the oxygen outlet chamber 8 through the fourth inlet 8a via the distribution valve assembly 150, and then flows out through the fifth outlet 9a, thereby realizing the function of directly providing oxygen to the user. When one of the molecular sieves needs to be purged of nitrogen, oxygen enters the purge chamber 6 through the first inlet 3a via the distribution valve assembly 150, and then the oxygen in the purge chamber 6 flows into the corresponding molecular sieve through the second outlet 2a or the first outlet 1a, thereby purging the nitrogen in the molecular sieve, thus realizing the nitrogen purging function. In other words, the portable oxygen concentrator separates oxygen through a molecular sieve, and the airflow path is controlled by a distribution valve assembly 150. The integrated airway is connected to the distribution valve assembly 150 to guide the airflow to the appropriate location to achieve the functions of oxygen storage, oxygen supply, and nitrogen removal. In the above structure, replacing multiple long air pipes with an integrated airway can effectively avoid airway blockage and reduce the probability of product failure; on the other hand, it can reduce the number of parts, thereby reducing assembly steps.

[0066] Of course, in other embodiments not shown in the figure, the airway shell 140 is provided with a purge chamber 6 and an oxygen storage chamber 7 that are not interconnected; or, the airway shell 140 is provided with a purge chamber 6 and an oxygen outlet chamber 8 that are not interconnected; or, the airway shell 140 is provided with an oxygen storage chamber 7 and an oxygen outlet chamber 8 that are not interconnected.

[0067] like Figures 1 to 3 and Figure 8 As shown, in this embodiment, the first air outlet 1a, the second air outlet 2a, the third air outlet 6a, the first air inlet 3a, the second air inlet 4a, the third air inlet 5a, and the fourth air inlet 8a are located on the same side of the shell wall of the air passage housing 140. This structure facilitates docking with the distribution valve assembly 150, thereby improving assembly efficiency; furthermore, this structure can shorten the length of each air passage.

[0068] like Figure 1 and Figure 3 As shown, in this embodiment, when the airway shell 140 includes a purge chamber 6 and an oxygen storage chamber 7, the first air outlet 1a and the second air outlet 2a are arranged at intervals along the first direction n to form a first flow port group 10a; the second air inlet 4a and the third air inlet 5a are arranged at intervals along the first direction n to form a second flow port group 11a; the first air inlet 3a and the third air outlet 6a are arranged at intervals along the first direction n to form a third flow port group 12a; and the first flow port group 10a, the second flow port group 11a, and the third flow port group 12a are arranged at intervals along a second direction m perpendicular to the first direction n. Preferably, in this embodiment, the first direction n is... Figure 3 The left and right directions, the second direction m is Figure 3 The structure described above concentrates the first flow port group 10a, the second flow port group 11a, and the third flow port group 12a on the left side of the integrated air passage, facilitating docking and connection with the distribution valve assembly 150, thereby improving assembly efficiency. Furthermore, this structure can shorten the length of each air passage. Of course, in other embodiments not shown in the figure, the first direction n can also be vertical, and the second direction m can also be horizontal. The specific arrangement of the first air outlet 1a, the second air outlet 2a, the third air outlet 6a, the first air inlet 3a, the second air inlet 4a, the third air inlet 5a, and the fourth air inlet 8a can be adjusted according to the actual situation of the distribution valve assembly 150.

[0069] like Figure 3 As shown, in this embodiment, the second direction m is the vertical direction, and the first flow port group 10a, the second flow port group 11a, and the third flow port group 12a are arranged sequentially from top to bottom. The arrangement of the flow port groups minimizes the length of each gas path.

[0070] like Figure 1 and Figure 3 As shown, in this embodiment, when the airway housing 140 also includes an oxygen outlet chamber 8, the fourth air inlet 8a is located below the third flow port group 12a. This structure integrates all air inlets and outlets on the airway housing 140 on the left side of the airway housing 140 for easy docking with the distribution valve assembly 150, thereby improving assembly efficiency; furthermore, this structure can shorten the length of each air passage.

[0071] like Figures 1 to 5As shown, in this embodiment, the airway housing 140 includes a main body 141 and an extension 142. When the airway housing 140 includes an oxygen outlet chamber 8, the oxygen outlet chamber 8 is located within the main body 141 and the extension 142. The purge chamber 6 and the oxygen storage chamber 7 are located within the main body 141. A fourth air inlet 8a is disposed on the main body 141, and a fifth air outlet 9a is disposed on the extension 142. This structure allows the fifth air outlet 9a to be positioned at any location within the oxygen generator according to actual conditions, meeting design requirements.

[0072] like Figures 1 to 5 As shown, in this embodiment, the main body 141 includes a box body 1411 with an opening and a partition plate 1412. The extension 142 includes an extension body 1421 and a lid 1422 covering the opening. The partition plate 1412 is sandwiched between the bottom plate of the box body 1411 and the lid 1422. The lid 1422 is sealed to the opening of the box body 1411 and the partition plate 1412 to prevent the multiple cavities within the airway shell 140 from communicating with each other. The above structure is simple and easy to manufacture. Preferably, in this embodiment, the lid 1422 is ultrasonically welded to the opening of the box body 1411 and the partition plate 1412 to ensure sealing. Of course, in other embodiments not shown in the figure, the lid 1422 can also be sealed to the opening of the box body 1411 and the partition plate 1412 in other ways. Alternatively, in other embodiments not shown in the figure, the lid 1422 and the main body 141 are an integral structure (e.g., obtained by 3D printing). The above structure can also achieve a sealing effect.

[0073] like Figures 1 to 3 As shown, in this embodiment, the first air outlet 1a, the second air outlet 2a, the third air outlet 6a, the first air inlet 3a, the second air inlet 4a, the third air inlet 5a, and the fourth air inlet 8a are located on the bottom plate of the box, and the fourth air outlet 7a is located on the box cover 1422. This structure facilitates docking with the distribution valve assembly 150, thereby improving assembly efficiency; furthermore, this structure can shorten the length of each air path. It should be noted that in this embodiment, a protruding connector is provided at the fourth air outlet 7a.

[0074] like Figure 1 , Figure 4 and Figure 5 As shown, in this embodiment, a detection hole 143 is provided on the airway shell 140, which connects to the outside atmosphere and the oxygen supply chamber 8. In this embodiment, the detection hole 143 includes holes that avoid the receiving end of the oxygen concentration sensor and holes that avoid the receiving end of the differential pressure sensor 170. It should be noted that when the differential pressure sensor detects a value reaching a predetermined range, the oxygen generator begins supplying oxygen.

[0075] like Figures 1 to 5As shown, in this embodiment, the airway shell 140 includes a vertically arranged main body 141 and a horizontally arranged extension 142 on the top of one side of the main body 141. The main body 141 and the extension 142 together form an L-shape. The extension 142 includes an outlet shell and an extension beam disposed between the outlet shell and the main body 141. The channel in the extension beam and the space in the main body of the extension 142 form a partial oxygen outlet chamber 8. A fifth outlet 9a is disposed on the outlet shell, and a detection hole is provided on the extension beam for detecting pressure difference.

[0076] like Figures 1 to 5 and Figure 7 As shown, in this embodiment, the integrated airway further includes a first mounting structure 144 for mounting the display device 180 and the circuit board. Specifically, in this embodiment, the first mounting structure 144 at the top of the integrated airway is used to mount the display device 180 for user viewing and operation. The first mounting structure 144 on the side of the integrated airway is used to mount the circuit board. This structure, on the one hand, allows the integrated airway to function as both an integrated airway and a fixture for the display device 180 and the circuit board, serving multiple purposes and reducing the production cost of the oxygen concentrator; on the other hand, the integrated airway, display device 180, and circuit board are integrated together to form a single mounting module, facilitating the overall installation of the oxygen concentrator.

[0077] like Figure 2 As shown, in this embodiment, the integrated airway further includes a second mounting structure 145, through which the integrated airway is installed into the oxygen generator.

[0078] like Figures 1 to 5 As shown, in this embodiment, connectors are provided at the first air outlet 1a, the second air outlet 2a, the first air inlet 3a, the second air inlet 4a, the third air inlet 5a, the third air outlet 6a, the fourth air outlet 7a, and the fourth air inlet 8a. The above structure is simple and easy to install. Preferably, in this embodiment, protruding connectors are provided at the first air outlet 1a, the second air outlet 2a, the second air inlet 4a, and the third air inlet 5a, while concave connectors are provided at the first air inlet 3a, the third air outlet 6a, and the fourth air inlet 8a. The above structure is simple and easy to install and process.

[0079] like Figures 6 to 12As shown, this application also provides an oxygen concentrator. An embodiment of the oxygen concentrator according to this application includes: a first molecular sieve 20a, a second molecular sieve 20b, a distribution valve assembly 150, and an integrated air passage 160. The distribution valve assembly 150 has a first port 8b and a second port 9b communicating with the first molecular sieve 20a and the second molecular sieve 20b; the integrated air passage 160 is the integrated air passage of the aforementioned oxygen concentrator; the distribution valve assembly 150 is further provided with a fifth air inlet 1b connected to the first air outlet 1a, a sixth air inlet 2b connected to the second air outlet 2a, and a sixth air outlet 3b connected to the first air inlet 3a; the distribution valve assembly 150 is further provided with a seventh air outlet 4b connected to the second air inlet 4a, an eighth air outlet 5b connected to the third air inlet 5a, and a seventh air inlet 6b connected to the third air outlet 6a; the distribution valve assembly 150 is further provided with a ninth air outlet 7b connected to the fourth air inlet 8a. Since the integrated airway 160 has the advantage of effectively avoiding airway blockage and reducing the probability of product failure, oxygen concentrators with it also have the above advantages.

[0080] like Figure 10 , Figure 12 and Figure 31 As shown, a first one-way valve 130a is installed between the first air outlet 1a and the fifth air inlet 1b; a second one-way valve 130b is installed between the second air outlet 2a and the sixth air inlet 2b; a third one-way valve 130c is installed between the second air inlet 4a and the seventh air outlet 4b; and a fourth one-way valve 130d is installed between the third air inlet 5a and the eighth air outlet 5b. This structure can limit the flow direction of the incoming and outgoing airflow, preventing backflow problems.

[0081] In addition, such as Figure 1 and Figure 11 As shown, in this embodiment, connectors are actually provided at the first air outlet 1a, the second air outlet 2a, the first air inlet 3a, the second air inlet 4a, the third air inlet 5a, the third air outlet 6a, the fourth air outlet 7a, and the fourth air inlet 8a; and connectors are provided at the fifth air inlet 1b, the sixth air inlet 2b, the sixth air outlet 3b, the seventh air outlet 4b, the eighth air outlet 5b, the seventh air inlet 6b, and the ninth air outlet 7b. That is, the distribution valve assembly 150 and the integrated air passage 160 are connected by a plug. This structure further avoids the use of flexible air tubing, preventing the tubing from falling off and thus reducing the probability of product malfunction.

[0082] Preferably, such as Figure 11As shown, in this embodiment, the distribution valve assembly 150 includes, from top to bottom, a pressure equalization valve, a purge valve, and a pulse valve. The pressure equalization valve is provided with a fifth air inlet 1b, a sixth air inlet 2b, a seventh air outlet 4b, and an eighth air outlet 5b. The fifth air inlet 1b, the seventh air outlet 4b, and the second through port 9b are normally open, as are the sixth air inlet 2b, the eighth air outlet 5b, and the first through port 8b. The purge valve is provided with a first air inlet 3a and a third air outlet 6a. The pulse valve is provided with a ninth air outlet 7b.

[0083] The following is a detailed description of the gas path switching of the oxygen concentrator in this embodiment:

[0084] When it is necessary to store the oxygen generated by the oxygen generator in the oxygen storage tank, the oxygen generated by the first molecular sieve 20a enters the equalizing valve through the first port 8b, and then enters the oxygen storage chamber 7 through the eighth outlet 5b and the third inlet 5a. The oxygen in the oxygen storage chamber 7 then enters the oxygen storage tank through the fourth outlet 7a, thus achieving the purpose of storing the oxygen generated by the first molecular sieve 20a in the oxygen storage tank. After the first molecular sieve 20a has been working for a period of time, the second molecular sieve 20b is switched on. The oxygen generated by the second molecular sieve 20b enters the equalizing valve through the second port 9b, and then enters the oxygen storage chamber 7 through the seventh outlet 4b and the second inlet 4a. The oxygen in the oxygen storage chamber 7 then enters the oxygen storage tank through the fourth outlet 7a, thus achieving the purpose of storing the oxygen generated by the second molecular sieve 20b in the oxygen storage tank. This cycle continues until the purpose of continuous oxygen storage is achieved.

[0085] When oxygen needs to be supplied to the user, the pulse valve is opened. Since the oxygen in the storage tank is connected to one of the valve chambers of the purge valve, when the pulse valve is opened, the oxygen in the storage tank first passes through the purge valve chamber and then flows into the pulse valve. Then, it flows through the fourth inlet 8a into the outlet chamber 8, and the gas in the outlet chamber 8 then flows to the customer through the fifth outlet 9a, thus achieving a continuous oxygen supply to the user. It should be noted that since the oxygen supplied to the user is provided by the storage tank, the flow direction of the oxygen remains unchanged regardless of whether the first molecular sieve 20a or the second molecular sieve 20b is operating.

[0086] When nitrogen purging is required, if the first molecular sieve 20a produces oxygen, then the second molecular sieve 20b simultaneously purges nitrogen. A portion of the oxygen produced by the first molecular sieve 20a flows through 6a to the purge valve. When the purge valve opens, the oxygen enters the purge chamber through the sixth outlet 3b and the first inlet 3a, and then flows into the second molecular sieve 20b through the first outlet 1a and the second passage 9b, thus purging nitrogen from the second molecular sieve 20b. Conversely, if the second molecular sieve 20b produces oxygen, then the first molecular sieve 20a simultaneously purges nitrogen. A portion of the oxygen produced by the second molecular sieve 20b flows through 6a to the purge valve. When the purge valve opens, the oxygen enters the purge chamber through the sixth outlet 3b and the first inlet 3a, and then flows into the first molecular sieve 20a through the second outlet 2a and the first passage 8b, thus purging nitrogen from the first molecular sieve 20a. This cycle continues, ultimately achieving the goal of alternating nitrogen purging by the two molecular sieves.

[0087] For a period of time before switching molecular sieves, the pressure equalization valve can be opened to connect the first molecular sieve 20a and the second molecular sieve 20b. At this time, the gas in the first molecular sieve 20a (second molecular sieve 20b) can flow into the second molecular sieve 20b (first molecular sieve 20a) quickly, causing the pressure in the second molecular sieve 20b (first molecular sieve 20a) to rise rapidly. This allows the compressor to reach the ideal pressure in the second molecular sieve 20b (first molecular sieve 20a) in a shorter time, thereby achieving the effect of saving energy.

[0088] like Figures 13 to 16 and Figure 20 As shown, the molecular sieve assembly of the oxygen concentrator in this embodiment includes: a mounting shell 10, a molecular sieve 20, and a detachable structure 30. The mounting shell 10 has a receiving space and an opening. The molecular sieve 20 has two independent adsorption spaces 1, each filled with adsorbent material. Each adsorption space 1 is provided with a first flow port 2 and a second flow port 3. The molecular sieve 20 is installed in the receiving space of the mounting shell 10, with the first flow port 2 and the second flow port 3 located outside the mounting shell 10. The detachable structure 30 is disposed on the mounting shell 10 or on the portion of the molecular sieve 20 located outside the mounting shell 10, for detachable connection to the main unit 50 of the oxygen concentrator.

[0089] By applying the technical solution of this embodiment, when disassembling the old molecular sieve assembly, the detachable structure 30 is directly disconnected from the main unit 50 of the oxygen concentrator, allowing the molecular sieve assembly to be directly removed from the main unit 50. When replacing the new molecular sieve assembly, the first flow port 2 is aligned with the fourth flow port 5 of the main unit 50, and the second flow port 3 is aligned with the third flow port 4 of the main unit 50. The detachable structure 30 is then aligned with the main unit 50, allowing the new molecular sieve assembly to be installed on the main unit 50. The above structure is simple, making it easy for users to replace the molecular sieve assembly of the oxygen concentrator themselves, thereby effectively reducing maintenance costs. In addition, since the molecular sieve 20 is housed within the mounting shell 10, the mounting shell 10 can protect the molecular sieve 20 during use and transportation, preventing damage from impacts that could affect its use.

[0090] It should be noted that, in this embodiment, since the molecular sieve 20 has two independent adsorption spaces 1, the left and right spaces can alternately generate oxygen and release nitrogen during the operation of the oxygen generator, thereby ensuring the oxygen generation efficiency of the oxygen generator. Specifically, when the adsorption space 1 on the left side of the figure is generating oxygen, the adsorption space 1 on the right side is releasing nitrogen, and vice versa.

[0091] The following describes the airflow direction for oxygen production and nitrogen removal in detail:

[0092] When the adsorption space 1 on the left is generating oxygen, air enters from the fourth outlet 5 on the left side of the main unit 50 into the first outlet 2 on the left side of the molecular sieve assembly. It then flows upward to ensure sufficient contact with the adsorbent material. As the gas flows upward, the nitrogen component is adsorbed by the adsorbent material, while the oxygen component continues to flow upward, eventually flowing into the main unit 50 through the second outlet 3 and the third outlet 4 on the left side, thus achieving the oxygen generation function. Simultaneously, the adsorption space on the right begins to vent nitrogen. Some oxygen in the main unit 50 flows into the adsorption space 1 on the right side through the third outlet 4 and the second outlet 3 on the right side, purging the nitrogen adsorbed in the adsorbent material on the right. The nitrogen then flows into the main unit 50 through the first outlet 2 and the fourth outlet 5 on the right side, achieving the nitrogen venting function. The flow path for oxygen generation on the right and nitrogen venting on the left is the opposite of the aforementioned direction and will not be described further here.

[0093] In other embodiments not shown in the figure, the first flow port 2 and the second flow port 3 are not necessarily located outside the mounting housing 10. As long as the mounting housing 10 has a clearance opening to avoid the first flow port 2 and the second flow port 3, it is sufficient to ensure that the first flow port 2 can communicate with the fourth flow port 5 of the host 50 and the second flow port 3 can communicate with the third flow port 4 of the host 50.

[0094] like Figure 13 , Figure 15 and Figure 20 As shown, in this embodiment, the detachable structure 30 is a snap-fit ​​structure. Specifically, in this embodiment, the detachable structure 30 is a slot, and the main unit 50 of the oxygen concentrator is provided with a buckle that engages with the slot. The buckle has a snap-fit ​​position that engages with the slot and a release position that disengages from the slot. When the buckle is aligned with the slot, the buckle automatically springs into the snap-fit ​​position. When the buckle receives external force, it can move to the release position. Of course, in other embodiments not shown in the figure, the detachable structure can also be the buckle described above, with a corresponding slot provided on the main unit of the oxygen concentrator. Alternatively, in other embodiments not shown in the figure, the detachable structure is a magnetic structure, and the molecular sieve assembly is magnetically attached to the main unit.

[0095] When replacing the molecular sieve assembly, the first flow port 2 needs to be aligned with the fourth flow port 5 of the main unit 50, and the second flow port 3 needs to be aligned with the third flow port 4 of the main unit 50. To further facilitate user alignment, such as... Figure 13 , Figure 15 and Figure 20 As shown, in this embodiment, the mounting housing 10 is provided with a guide structure 11 for installation guidance. This structure can shorten the time required for the user to align the air inlet and outlet, thereby further facilitating the user to replace the molecular sieve assembly of the oxygen generator themselves.

[0096] like Figure 13 , Figure 15 and Figure 20 As shown, in this embodiment, the second flow port 3 and the first flow port 2 are respectively located at the top and bottom of the mounting shell 10, and the guide structure 11 is a guide groove extending vertically. Specifically, the main unit 50 of the oxygen concentrator is provided with a guide rail that cooperates with the guide groove. During installation, the end of the guide groove is aligned with the guide rail, and then the molecular sieve assembly is moved in the direction of the guide rail extension. Under the guiding cooperation of the guide rail and the guide groove, the molecular sieve assembly can move in a preset direction so that the first flow port 2 automatically aligns with the fourth flow port 5 of the main unit 50, and the second flow port 3 automatically aligns with the third flow port 4 of the main unit 50. When the molecular sieve assembly moves to the preset position, the first flow port 2 communicates with the fourth flow port 5 of the main unit 50, the second flow port 3 communicates with the third flow port 4 of the main unit 50, and the detachable structure 30 is detachably connected to the main unit 50. The above structure is simple, allowing the user to replace the molecular sieve assembly simply by sliding it, thus making it easier for the user to replace the molecular sieve assembly of the oxygen concentrator themselves. Of course, in other embodiments not shown in the figure, the guide structure 11 can also be a guide rail, and the host is provided with a guide groove that cooperates with the guide rail.

[0097] like Figure 13 , Figures 15 to 17 and Figure 20As shown, in this embodiment, the molecular sieve 20 includes a molecular sieve shell 21 with an internal partition 211 and a base 22. The base 22 covers the lower opening of the molecular sieve shell 21 to form two adsorption spaces 1 in the molecular sieve 20. Two air inlets 221, each communicating with one of the two adsorption spaces 1, are provided on the base 22. A first flow port 2 is formed inside the air inlet 221. The guide structure 11 is a guide groove, and the air inlet 221 extends to the bottom of the guide groove. Specifically, in this embodiment, the main unit 50 is provided with two air outlet pipes 53. The air outlet of the air outlet pipe 53 forms a fourth flow port 5. The air outlet pipe 53 is inserted into the air inlet 221 so that the fourth flow port 5 communicates with the first flow port 2. Since the air inlet 221 is located at the bottom of the guide groove, part of the air outlet pipe 53 can be accommodated within the guide groove. The above structure allows the guide groove to serve both a guiding function and to utilize the space inside the guide groove to accommodate the air pipe 53 and the air inlet cylinder 221, thereby reducing the size of the molecular sieve assembly and the oxygen generator, achieving a miniaturized design, and improving the portability of the oxygen generator.

[0098] like Figure 13 and Figure 15 As shown, in this embodiment, the guide structure 11 and the detachable structure 30 are both located on the same side surface of the mounting shell 10. This structure ensures that both the guide structure 11 and the detachable structure 30 are located on the mounting side of the mounting shell 10. After the molecular sieve assembly is installed, the detachable structure 30 and the guide structure 11 are hidden, thus making the structure of the oxygen generator more concise.

[0099] Preferably, such as Figure 13 and Figure 15 As shown, in this embodiment, there are two guide grooves arranged at intervals, and the detachable structure 30 is a slot located between the two guide grooves. The above structure reasonably arranges the positions of the guide structure 11 and the detachable structure 30, while improving guiding performance, connection reliability, and miniaturization.

[0100] like Figures 13 to 15 As shown, in this embodiment, the guide groove includes two oppositely arranged groove walls and a groove bottom between the two groove walls. A limiting groove 14 extending along its extension direction is provided on the groove wall, and a corresponding limiting protrusion 513 is provided on the guide rail of the main unit 50. This structure ensures that the guide rail cooperating with the guide groove will not dislodge from the guide groove, guaranteeing that the guide structure 11 always plays a guiding role.

[0101] Preferably, such as Figure 13 As shown, in this embodiment, limiting grooves 14 are provided on the groove walls of both guide grooves.

[0102] Of course, in other embodiments not shown in the figure, a limiting flange may also be provided on the wall of the guide groove, or the guide structure 11 may be a guide rail, and a limiting groove or limiting flange may be provided on the side of the guide rail.

[0103] like Figure 13 , Figure 15 , Figure 16 and Figure 18 As shown, in this embodiment, the molecular sieve 20 is provided with a positioning protrusion 212, and the second flow port 3 is provided on the positioning protrusion 212. The mounting shell 10 has a clearance hole 12 at a position corresponding to the positioning protrusion 212 to avoid the positioning protrusion 212. This structure ensures that the second flow port 3 will not wobble after the molecular sieve 20 and mounting shell 10 are installed, thus ensuring that the second flow port 3 is more easily aligned and installed with the third flow port 4 when replacing the molecular sieve assembly. Preferably, in this embodiment, the molecular sieve 20 is provided with two positioning protrusions 212, and each positioning protrusion 212 is provided with a second flow port 3. This structure can reduce the volume of the positioning protrusion 212 and lower costs.

[0104] like Figure 16 and Figure 18 As shown, in this embodiment, the opening of the mounting shell 10 is located at the bottom of the mounting shell 10. Due to processing requirements, after installation, there is a small gap between the top of the mounting shell 10 and the top of the molecular sieve 20. Because of this gap, the molecular sieve 20 may wobble inside the mounting shell 10 under external force, thus producing abnormal noise. To solve the above problem, as... Figure 13 As shown, in this embodiment, the molecular sieve assembly of the oxygen generator further includes an elastic structure 40, sandwiched between the top of the mounting shell 10 and the top of the molecular sieve 20. This structure ensures that the gap is filled by the elastic structure 40, preventing the molecular sieve 20 from shaking within the mounting shell 10, thereby preventing abnormal noise from the molecular sieve assembly under external force.

[0105] like Figure 16 , Figure 17 and Figure 19 As shown, in this embodiment, the molecular sieve 20 includes a molecular sieve shell 21 with an internal partition 211, a base 22, and a sealing structure 23. The base 22 covers the lower opening of the molecular sieve shell 21 to form two adsorption spaces 1 in the molecular sieve 20. The sealing structure 23 is sandwiched between the bottom of the molecular sieve shell 21 and the base 22. The above structure can ensure airtightness, preventing the gas in the two adsorption spaces 1 from flowing between each other, and preventing the gas in the adsorption spaces 1 from leaking into the outside atmosphere.

[0106] like Figure 13 and Figure 15 As shown, in this embodiment, the mounting housing 10 is provided with a handle 13. This structure facilitates the user's assembly and disassembly of the molecular sieve assembly. Of course, in other embodiments not shown in the figures, the mounting housing is provided with a handle.

[0107] like Figure 20 As shown, this application also provides a main unit for an oxygen concentrator. An embodiment of the main unit of the oxygen concentrator according to this application includes: a housing and a mounting structure 511. The housing is provided with two third flow ports 4 and two fourth flow ports 5 corresponding one-to-one with the two third flow ports 4. The mounting structure 511 allows the molecular sieve assembly 60 of the oxygen concentrator to be detachably mounted on the housing.

[0108] By applying the technical solution of this embodiment, when disassembling the old molecular sieve assembly, the molecular sieve assembly is directly decoupled from the mounting structure 511 of the oxygen concentrator's main unit, allowing it to be directly removed from the main unit 50. When replacing the new molecular sieve assembly, the first flow port 2 is aligned with the fourth flow port 5 of the main unit 50, and the second flow port 3 is aligned with the third flow port 4 of the main unit 50. The molecular sieve assembly is then fitted with the mounting structure 511, allowing the new molecular sieve assembly to be installed on the main unit 50. This structure is simple and allows users to easily replace the molecular sieve assembly of the oxygen concentrator themselves, effectively reducing maintenance costs.

[0109] It should be noted that in this embodiment, "the casing is provided with two third flow ports 4 and two fourth flow ports 5 corresponding to the two third flow ports 4" means that the two third flow ports 4 include a left third flow port and a right third flow port, and the two fourth flow ports include a left fourth flow port and a right fourth flow port. Gas flowing out of the left fourth flow port can only flow to the left third flow port; gas flowing out of the right fourth flow port can only flow to the right third flow port. That is, when the oxygen concentrator is working, the gas flowing out of the left fourth flow port enters the left adsorption space 1 for oxygen production, and oxygen can only enter the main unit through the left third flow port. The gas flowing out of the right fourth flow port enters the right adsorption space 1 for nitrogen removal, and nitrogen can only enter the main unit through the right third flow port. Therefore, when the oxygen concentrator is working, oxygen production and nitrogen removal can alternate between the left and right sides, thereby ensuring the oxygen production efficiency of the oxygen concentrator.

[0110] Preferably, in this embodiment, the mounting structure 511 is a buckle that engages with the aforementioned slot. The buckle has an engaging position that engages with the slot and a disengaging position that disengages from the slot. When the buckle is aligned with the slot, it automatically springs into the engaging position. When the buckle receives external force, it can move to the disengaging position.

[0111] More preferably, the latch includes a hook portion, a pressing portion, and an elastic element that mate with the latch slot. When the user presses the pressing portion, the latch can move to the disengaged position. When the user stops pressing, the latch returns to the engaged position under the restoring force of the elastic element. Of course, in other embodiments shown in the figure, the position switching of the latch can also be achieved by electric drive of a drive device.

[0112] When replacing the molecular sieve assembly, the first flow port 2 needs to be aligned with the fourth flow port 5 of the main unit 50, and the second flow port 3 needs to be aligned with the third flow port 4 of the main unit 50. To further facilitate user alignment, such as... Figure 20 As shown, in this embodiment, the main unit further includes a guide and mating structure 512 disposed on the housing for guiding the installation of the molecular sieve assembly 60. This structure can shorten the time required for the user to align the inlet and outlet air ports, thereby further facilitating the user to replace the molecular sieve assembly of the oxygen generator themselves.

[0113] In this embodiment, the main unit further includes a compressor for compressing air. The compressed air can flow through the fourth outlet 5 and the first outlet 2 into the molecular sieve assembly for oxygen production.

[0114] In this embodiment, the main unit further includes an airflow control valve, which controls the airflow direction to perform alternating oxygen production and nitrogen removal on the left and right sides. Specifically, "alternating oxygen production and nitrogen removal on the left and right sides" means that after oxygen production on the left side and nitrogen removal on the right side for a period of time, the system switches to nitrogen removal on the left side and oxygen production on the right side.

[0115] like Figure 21 and Figure 22 As shown, this application also provides an oxygen concentrator. An embodiment of the oxygen concentrator according to this application includes: a main unit 50 and a molecular sieve assembly 60. The main unit 50 has two third flow ports 4 and two fourth flow ports 5. The molecular sieve assembly 60 is the molecular sieve assembly of the aforementioned oxygen concentrator. The two third flow ports 4 are respectively connected to the two second flow ports 3 of the molecular sieve assembly 60, and the two fourth flow ports 5 are respectively connected to the two first flow ports 2 of the molecular sieve assembly 60. The main unit 50 is provided with an installation mating structure 511 that mates with the detachable structure 30 of the molecular sieve assembly 60.

[0116] By applying the technical solution of this embodiment, when disassembling the old molecular sieve assembly, the detachable structure 30 is directly disconnected from the mounting structure 511 of the oxygen concentrator's main unit, allowing the molecular sieve assembly to be directly removed from the main unit 50. When replacing the new molecular sieve assembly, the first flow port 2 is aligned with the fourth flow port 5 of the main unit 50, and the second flow port 3 is aligned with the third flow port 4 of the main unit 50. The detachable structure 30 is then fitted with the mounting structure 511, allowing the new molecular sieve assembly to be installed on the main unit 50. This structure is simple and allows users to easily replace the molecular sieve assembly of the oxygen concentrator themselves, effectively reducing maintenance costs.

[0117] like Figure 20As shown, in this embodiment, the connection between the fourth flow port 5 and the first flow port 2 is sealed by a sealing ring 70, and the connection between the third flow port 4 and the second flow port 3 is also sealed by a sealing ring 70. This structure ensures the sealing at the connection points of the fourth flow port 5 and the first flow port 2, and the third flow port 4 and the second flow port 3. Of course, in other embodiments not shown in the figure, a sealing ring may be provided only at one of the connection points: the fourth flow port 5 and the first flow port 2, and the third flow port 4 and the second flow port 3.

[0118] like Figure 21 and Figure 22 As shown, in this embodiment, the oxygen concentrator further includes a battery assembly 80 disposed at the bottom of the main unit 50 and the molecular sieve assembly 60. The battery assembly 80 is electrically connected to the main unit 50 to supply power to the main unit 50. Preferably, in this embodiment, the battery assembly 80 is slidably connected to the main unit 50, and the battery assembly 80 contacts the main unit 50 to supply power. Specifically, when disassembling the old molecular sieve assembly, the battery assembly 80 is first slidably removed horizontally, and then the detachable structure 30 is disengaged from the mounting and fitting structure 511 of the main unit of the oxygen concentrator, allowing the molecular sieve assembly to be directly removed from the main unit 50. After replacing the new molecular sieve assembly, the battery assembly 80 is slidably installed at the bottom of the main unit 50 and the molecular sieve assembly 60. When the battery assembly 80 slides into place, it is electrically connected to the main unit 50, at which point the oxygen concentrator can begin normal operation. It should be noted that the battery assembly 80 not only provides power but also supports the molecular sieve assembly, ensuring the service life of the detachable structure 30 and the mounting and fitting structure 511.

[0119] Furthermore, it should be noted that in this embodiment, the host 50, the molecular sieve assembly 60, and the battery assembly 80 are three independent entities, and each can be designed with different colors and appearance effects according to appearance requirements.

[0120] Preferably, such as Figure 13 and Figure 20 As shown, in this embodiment, the second flow port 3 and the first flow port 2 are respectively disposed at the top and bottom of the mounting shell 10, and the guide structure 11 is a guide groove extending vertically. The main unit 50 is provided with a guide mating structure 512 that cooperates with the guide structure 11 of the molecular sieve assembly 60, and the guide mating structure 512 is a guide rail. The above structure is simple and easy to assemble. Of course, in other embodiments not shown in the figure, the guide structure can be a guide rail extending vertically, and the guide mating structure 512 can be a guide groove extending vertically.

[0121] like Figure 13 , Figures 20 to 22As shown, in this embodiment, the host 50 includes a host body 51 and a baffle 52 located on the top of the mounting side of the host body 51. The third flow port 4 is disposed at the bottom of the baffle 52. The guide fitting structure 512 is located on the side wall of the mounting side of the host body 51, and the mounting fitting structure 511 is located at the bottom of the side wall of the mounting side of the host body 51. Specifically, during replacement, the end opening of the guide groove is aligned with the guide rail, and then the molecular sieve assembly is moved in the direction of the guide rail extension. Under the guiding action of the guide rail and the guide groove, the molecular sieve assembly can move in a preset direction so that the first flow port 2 automatically aligns with the fourth flow port 5 of the host 50, and the second flow port 3 automatically aligns with the third flow port 4 of the host 50. When the molecular sieve assembly is stopped by the baffle 52, it means that the molecular sieve assembly has moved to the preset position. At this time, the first flow port 2 is connected to the fourth flow port 5 of the host 50, the second flow port 3 is connected to the third flow port 4 of the host 50, and the detachable structure 30 is detachably connected to the mounting and mating structure 511.

[0122] like Figure 20 As shown, in this embodiment, the main unit 50 includes two air outlet pipes 53, the air outlets of the air outlet pipes 53 forming a fourth flow port 5, and the guide rail has a receiving space, with part of the air outlet pipes 53 located inside the guide rail. In the above structure, by placing part of the air outlet pipes 53 inside the guide rail, the space occupied by the guide rail can be fully utilized, thereby reducing the space occupied by the air outlet pipes 53 in the main unit 50, thus achieving a miniaturized design.

[0123] As can be seen from the above description, the embodiments of the present invention achieve the following technical effects:

[0124] This invention solves the problem that the molecular sieve tank of portable oxygen concentrators can only be replaced by professionals. Users only need to have the molecular sieve assembly mailed to them, eliminating the need to return the entire machine to the factory for repair. This significantly reduces shipping and labor costs for repairs. Users can prepare a set of molecular sieve assemblies in advance, so that when the molecular sieve assembly reaches the end of its service life, it can be replaced immediately, facilitating continuous use and avoiding a period of inaccessibility due to molecular sieve assembly failure.

[0125] like Figures 23 to 26 , Figure 29 and Figure 32As shown, in this embodiment, the integrated air duct of the oxygen concentrator includes: a base 190 and multiple independent air passages disposed on the base 190. The multiple air passages include: an air supply passage 1c, a first distribution passage 1d, a second distribution passage 1e, and a nitrogen discharge passage 1f. The air supply passage 1c includes a first air inlet 2c connected to the compressor of the oxygen concentrator and an air outlet 3c connected to the distribution valve of the oxygen concentrator. The first distribution passage 1d includes a fifth flow port 2d connected to the distribution valve and a sixth flow port 3d connected to the first molecular sieve of the oxygen concentrator. The second distribution passage 1e includes a seventh flow port 2e connected to the distribution valve and an eighth flow port 3e connected to the second molecular sieve of the oxygen concentrator. The nitrogen discharge passage 1f includes a nitrogen inlet 2f connected to the distribution valve and a first nitrogen outlet 3f.

[0126] Applying the technical solution of this embodiment, the air discharged by the compressor can be distributed to the first molecular sieve or the second molecular sieve after passing through the integrated air duct to achieve the purpose of oxygen production; the nitrogen discharged by the first molecular sieve or the second molecular sieve can be discharged through the integrated air duct via the nitrogen discharge path 1f to achieve the purpose of nitrogen discharge to a predetermined location. In the above structure, by replacing multiple long air pipe paths with an integrated air duct, on the one hand, air path blockage can be effectively avoided, reducing the probability of product failure; on the other hand, it can reduce the number of parts, thereby reducing assembly processes.

[0127] The oxygen concentrator uses its first and second molecular sieves to alternately generate oxygen and expel nitrogen. The gas flow path during oxygen generation and nitrogen expulsion is explained in detail below:

[0128] When the first molecular sieve generates oxygen, the compressor supplies air to the air supply path 1c through the first air inlet 2c. The air flows from the air outlet 3c to the distribution valve of the oxygen generator. Through the distribution valve, the air flows into the first distribution path 1d through the fifth overflow port 2d. The air in the first distribution path 1d then enters the first molecular sieve through the sixth overflow port 3d to achieve the purpose of oxygen generation by the first molecular sieve. At the same time, the second molecular sieve begins to discharge nitrogen. The nitrogen enters the second distribution path 1e through the eighth overflow port 3e, and then enters the distribution valve through the seventh overflow port 2e. Through the distribution valve, the nitrogen is discharged into the nitrogen discharge path 1f, and finally discharged from the first nitrogen outlet 3f.

[0129] When the second molecular sieve generates oxygen, the compressor supplies air to the air supply path 1c through the first air inlet 2c. The air flows from the air outlet 3c to the distribution valve of the oxygen generator. Through the distribution valve, the air flows into the second distribution path 1e through the seventh overflow port 2e. The air in the second distribution path 1e then enters the second molecular sieve through the eighth overflow port 3e to achieve the purpose of oxygen generation by the second molecular sieve. At the same time, the first molecular sieve begins to discharge nitrogen. Nitrogen enters the first distribution path 1d through the sixth overflow port 3d, and then enters the distribution valve through the fifth overflow port 2d. Through the distribution valve, the nitrogen is discharged into the nitrogen discharge path 1f, and finally discharged from the first nitrogen outlet 3f.

[0130] Of course, in other embodiments not shown in the figure, the integrated air passage may include only any two or any three of the following: supply air passage 1c, first distribution air passage 1d, second distribution air passage 1e, and nitrogen venting air passage 1f. The above structures all achieve, to a certain extent, the goal of reducing the probability of product failure and reducing assembly steps.

[0131] like Figure 23 As shown, in this embodiment, the air outlet 3c, the fifth flow port 2d, the seventh flow port 2e, and the nitrogen inlet 2f are located on the same side of the base 190. Specifically, the air outlet 3c, the fifth flow port 2d, the seventh flow port 2e, and the nitrogen inlet 2f are all flow ports connected to the distribution valve of the oxygen generator, so placing them on the same side of the base 190 makes it easier to connect them to the distribution valve.

[0132] like Figure 23 and Figure 24 As shown, in this embodiment, the air outlet 3c, the fifth flow port 2d, the seventh flow port 2e, and the nitrogen inlet 2f are integrated on one side of the base 190. This structure allows the air outlet 3c, the fifth flow port 2d, the seventh flow port 2e, and the nitrogen inlet 2f, which are connected to the distribution valve, to be designed together. This allows the distribution valve to be directly plugged into the integrated air passage without the need for a short pipe connection, thus facilitating connection to the distribution valve and further reducing assembly steps. Of course, in other embodiments not shown in the figure, the air outlet 3c, the fifth flow port 2d, the seventh flow port 2e, and the nitrogen inlet 2f can also be integrated in the middle of the base 190.

[0133] like Figures 23 to 25As shown, in this embodiment, the air outlet 3c is located on the first side of the base 190, and the first air inlet 2c and the first nitrogen outlet 3f are located on the second side of the base 190 opposite to the first side. Specifically, in this embodiment, the compressor is located on the second side of the integrated air duct. Placing the first air inlet 2c on the second side of the base 190 facilitates connection with the compressor's outlet. Furthermore, the compressor has a sound-insulating housing with an opening, and the integrated air duct is essentially a cover over the opening, serving as the housing's cover. Since nitrogen discharge generates noise, placing the first nitrogen outlet 3f on the second side of the base 190 allows the nitrogen discharged from the first nitrogen outlet 3f to enter the sound-insulating housing, thereby achieving a certain degree of noise reduction and improving the user experience. Of course, in other embodiments not shown in the figure, the second side of the base 190 may only have either the first air inlet 2c or the first nitrogen outlet 3f.

[0134] like Figures 23 to 25 As shown, in this embodiment, the substrate 190 includes a cover plate 191 and a first extension tube 192 and a second extension tube 193 disposed on the cover plate 191 and extending outward. The passage in the first extension tube 192 forms a first distribution gas path 1d, and the passage in the second extension tube 193 forms a second distribution gas path 1e. This structure allows for more flexible placement of the first and second molecular sieves relative to the integrated gas channel. Of course, in other embodiments not shown in the figure, only the first extension tube 192 or the second extension tube 193 may be provided.

[0135] like Figures 23 to 25 As shown, in this embodiment, the first extension tube 192 includes a first tube body 1921 and a first connector 1922 and a second connector 1923 disposed at both ends of the first tube body 1921. The interface inside the first connector 1922 forms a fifth flow port 2d, and the first connector 1922 is located on the cover plate 191. The interface inside the second connector 1923 forms a sixth flow port 3d, and the second connector 1923 is located outside the cover plate 191. The above structure is simple and easy to connect with the distribution valve and the molecular sieve. It should be noted that in this embodiment, the first tube body 1921 is actually divided into a first upper tube wall and a first lower tube wall that interlock with each other. The channel between the first upper tube wall and the first lower tube wall forms part of the first distribution gas path 1d. The first upper tube wall and the first connector 1922 are integrally formed, and the first lower tube wall, the second connector 1923, and the cover plate 191 are integrally formed. In actual processing, the first upper tube wall and the first lower tube wall can be connected together by ultrasonic welding (any connection method that can achieve a seal is acceptable) to ensure sealing. Of course, in other embodiments not shown in the figures, the first extension tube 192 and the cover plate 191 can be integrally formed by 3D printing.

[0136] like Figures 23 to 25As shown, in this embodiment, the second extension tube 193 includes a second tube body 1931 and a third connector 1932 and a fourth connector 1933 disposed at both ends of the second tube body 1931. The interface inside the third connector 1932 forms a seventh flow port 2e, and the third connector 1932 is located on the cover plate 191. The interface inside the fourth connector 1933 forms an eighth flow port 3e, and the fourth connector 1933 is located outside the cover plate 191. The above structure is simple and facilitates connection with the distribution valve and molecular sieve. It should be noted that in this embodiment, the second tube body 1931 is actually divided into a second upper tube wall and a second lower tube wall that interlock with each other. The channel between the second upper tube wall and the second lower tube wall forms part of the second distribution gas path 1e. The second upper tube wall and the third connector 1932 are integrally formed structures, and the second lower tube wall, the fourth connector 1933, and the cover plate 191 are integrally formed structures. In actual processing, the second upper tube wall and the second lower tube wall can be connected together by ultrasonic welding (any connection method that can achieve a seal is acceptable) to ensure sealing. Of course, in other embodiments not shown in the figures, the second extension tube 193 and the cover plate 191 can be integrally formed by 3D printing.

[0137] Because the airflow in the airway is primarily high-pressure gas, high-pressure gas requires high sealing performance, and the air tube can easily detach from the connector. For example... Figures 23 to 26 As shown, in this embodiment, the substrate 190 further includes an overlapping structure 194 disposed on the cover plate 191 and extending towards the second connector 1923. The substrate 190 also includes an overlapping structure 194 disposed on the cover plate 191 and extending towards the fourth connector 1933. After the molecular sieve tubing is connected to the second connector 1923 and the fourth connector 1933, the overlapping structure 194 is located below a portion of the molecular sieve tubing structure, so that a portion of the tubing overlaps the overlapping structure 194. If the gas pressure is high, causing the molecular sieve tubing to tend to detach from the second connector 1923 and the fourth connector 1933, the overlapping structure 194 can prevent the molecular sieve tubing from slipping, thereby ensuring that the molecular sieve tubing remains connected to the second connector 1923 and the fourth connector 1933. Of course, in other embodiments not shown in the figures, the overlapping structure 194 may be provided only towards the second connector 1923, or only towards the fourth connector 1933.

[0138] like Figure 23 and Figure 26As shown, in this embodiment, the base 190 includes a cover plate 191 and a fifth connector 195 disposed on the first side of the cover plate 191. The cover plate 191 has a communicating hole communicating with the fifth connector 195. The fifth connector 195 and the channel in the communicating hole form a nitrogen venting path 1f, the interface in the fifth connector 195 forms a nitrogen inlet 2f, and the communicating hole forms a first nitrogen outlet 3f. The above structure is simple and easy to connect with a distribution valve and a nitrogen silencer. It should be noted that in this embodiment, the fifth connector 195 and the cover plate 191 are ultrasonically connected (any connection method that can achieve a seal is acceptable) to connect the fifth connector 195 and the cover plate 191 together to ensure sealing. Of course, in other embodiments not shown in the figure, the fifth connector 195 and the cover plate 191 can be integrally formed by 3D printing.

[0139] like Figure 23 and Figure 24 As shown, in this embodiment, the base 190 includes a cover plate 191 and a third extension pipe 196 passing through the cover plate 191. The passage in the third extension pipe 196 forms an air supply passage 1c. The above structure allows the third extension pipe 196 to effectively avoid the compressor (without interfering with the compressor) while ensuring that the air outlet 3c can be smoothly connected to the distribution valve.

[0140] like Figure 23 and Figure 24 As shown, in this embodiment, the third extension pipe 196 includes a sixth connector 1961 and a seventh connector 1962 respectively disposed on the first and second sides of the cover plate 191, and a connecting pipe 1963 connecting the sixth connector 1961 and the seventh connector 1962. The interface in the sixth connector 1961 forms an air outlet 3c, and the interface in the seventh connector 1962 forms a first air inlet 2c. The above structure is simple and easy to connect with a compressor and a distribution valve. It should be noted that in this embodiment, the connecting pipe 1963 is actually divided into a third upper pipe wall and a third lower pipe wall that interlock with each other. The channel between the third upper pipe wall and the third lower pipe wall forms part of the air supply path 1c. The third upper pipe wall and the sixth connector 1961 are integrally formed, and the third lower pipe wall, the seventh connector 1962, and the cover plate 191 are integrally formed. In actual processing, the third upper pipe wall and the third lower pipe wall can be connected together by ultrasonic welding (any connection method that can achieve a seal is acceptable) to ensure sealing. Of course, in other embodiments not shown in the figures, the third extension tube 196 and the cover plate 191 can be integrally formed by 3D printing.

[0141] Preferably, in this embodiment, the first connector 1922, the first upper pipe wall, the fifth connector 195, the third connector 1932, the second upper pipe wall, the sixth connector 1961, and the third upper pipe wall are integrally formed to form an integrated airway upper cover; the second connector 1923, the first lower pipe wall, the fourth connector 1933, the second lower pipe wall, the third lower pipe wall, the seventh connector 1962, and the cover plate 191 are integrally formed to form an integrated airway lower cover; the integrated airway upper cover and the integrated airway lower cover are connected by ultrasonic welding for sealing. Of course, in other embodiments not shown in the figures, the integrated airway can be an integrally formed structure.

[0142] like Figure 23 and Figure 25 As shown, in this embodiment, the substrate 190 includes a substrate body and a limiting structure 198 disposed on one side of the substrate body, and the air passage is disposed on the substrate body. Specifically, the component for mounting the integrated air passage has a mating structure that cooperates with the limiting structure 198, so that the integrated air passage is limited to the aforementioned component.

[0143] like Figure 27 and Figure 28 As shown, this application also provides a noise-reducing housing. An embodiment of the noise-reducing housing according to this application includes: a housing body 200 and an integrated air duct cover 210. The housing body 200 has an installation opening 201. The integrated air duct cover 210 is disposed over the installation opening 201, and the integrated air duct cover 210 is the integrated air duct of the aforementioned oxygen concentrator. Since the aforementioned integrated air duct has the advantages of reducing the probability of product failure and reducing assembly processes, the noise-reducing housing having it also has the aforementioned advantages.

[0144] like Figure 27 and Figure 28 As shown, in this embodiment, the limiting structure 198 of the integrated airway cover 210 engages with the opening wall of the mounting opening 201. This structure limits the integrated airway cover 210 to the mounting opening 201. Preferably, in this embodiment, the limiting structure 198 is a mounting flange, the shape of which is adapted to the shape of the mounting opening 201. The opening wall of the mounting opening 201 is located outside the side wall of the mounting flange to restrict the displacement of the integrated airway cover 210 within the plane of the mounting opening 201.

[0145] like Figures 29 to 32As shown, this application also provides an oxygen generator. An embodiment of the oxygen generator according to this application includes: a noise-reducing housing 220, a compressor 230, a gas distribution valve 240, a first molecular sieve 20a, and a second molecular sieve 20b. The noise-reducing housing 220 is the aforementioned noise-reducing housing. The compressor 230 is disposed within the housing body 200 of the noise-reducing housing 220, and the air outlet of the compressor 230 is connected to the first air inlet 2c of the air supply passage 1c of the integrated air passage cover 210 of the noise-reducing housing 220. The gas distribution valve 240 includes a second air inlet 241, a first distribution port 242, a second distribution port 243, and a second nitrogen outlet 244. The second air inlet 241 is connected to the air outlet 3c of the gas supply path 1c. The first distribution port 242 is connected to the seventh flow port 2e of the second distribution path 1e of the integrated gas duct cover 210. The second distribution port 243 is connected to the fifth flow port 2d of the first distribution path 1d of the integrated gas duct cover 210. The second nitrogen outlet 244 is connected to the nitrogen inlet 2f of the nitrogen discharge path 1f of the integrated gas duct cover 210. The first molecular sieve 20a is connected to the sixth flow port 3d of the first distribution path 1d. The second molecular sieve 20b is connected to the eighth flow port 3e of the second distribution path 1e. Because the aforementioned noise reduction housing has the advantages of reducing the probability of product failure and reducing assembly processes, the oxygen generator with it also has the aforementioned advantages.

[0146] like Figure 11 , Figures 29 to 31 As shown, in this embodiment, the gas distribution valve 240 is fixedly connected to the integrated air passage cover 210. The oxygen generator also includes an oxygen distribution valve (i.e., the aforementioned distribution valve assembly 150), comprising a third distribution port (i.e., the aforementioned first through port 8b) communicating with the first molecular sieve 20a and a fourth distribution port (i.e., the aforementioned second through port 9b) communicating with the second molecular sieve 20b. The oxygen distribution valve and the gas distribution valve 240 are press-fitted to press the integrated air passage cover 210 onto the housing body 200. In the above structure, as long as the oxygen distribution valve and the gas distribution valve 240 are assembled, the displacement of the integrated air passage cover 210 in the normal direction can be restricted, thereby reducing the assembly process.

[0147] like Figure 33 and Figure 34As shown, the one-way valve of this embodiment includes: a housing 90, a valve body 100, and a resilient valve plate 110. The housing 90 has a flow-through orifice 91. The valve body 100 is disposed within the flow-through orifice 91 to divide the channel within the flow-through orifice 91 into an inlet channel 911 and an outlet channel 912. A throttling orifice 101 is provided on the valve body 100, connecting the inlet channel 911 and the outlet channel 912. The resilient valve plate 110 is disposed on the valve body 100 and located on the side of the throttling orifice 101 closer to the outlet channel 912. The resilient valve plate 110 has a throttling position with the throttling orifice 101 open and a closed position with the throttling orifice 101 closed. The resilient valve plate 110 can switch between the throttling position and the closed position under the action of gas pressure.

[0148] Using the technical solution of this embodiment, fluid enters the one-way valve from the inlet channel 911, then passes through the throttling orifice 101. The throttling orifice 101 controls the fluid flow rate, and the fluid pressure pushes the elastic valve plate 110 open to the throttling position, allowing the fluid to flow into the outlet channel 912, thus achieving the throttling function. Conversely, when fluid flows from the outlet channel 912, the elastic valve plate 110, under the action of fluid pressure, tightly adheres to the valve body 100, achieving a seal. Fluid cannot enter the inlet channel 911 through the outlet channel 912, thus realizing the one-way valve function. Therefore, using the technical solution of this embodiment, the one-way valve contains only three components, each of which is relatively simple, easy to process and assemble, and the overall size can be adjusted according to the connector style. It is convenient to use, its size is comparable to that of the connector, and it can be integrated into the pipeline, greatly reducing the space occupied by the valve body and lowering production costs.

[0149] In this embodiment, the diameter of the throttling orifice 101 is between 0.1 and 1 mm. If the orifice diameter is too small, it will affect the smooth flow of fluid; if the orifice diameter is too large, it will not achieve the throttling effect. It should be noted that the diameter of the throttling orifice 101 can be machined according to actual needs, and the machining accuracy can be determined according to the flow control requirements. Its position should not be obstructed by the outer casing 90 to ensure smooth fluid flow.

[0150] In this embodiment, the valve body 100 is made of metal. The valve body 100 is made of a hard material such as metal to ensure the machining accuracy of the throttling orifice 101, thereby making the fluid flow rate easier to control.

[0151] like Figure 33 and Figure 34As shown, in this embodiment, a receiving groove 102 is provided on the side of the valve body 100 near the exhaust passage 912. The elastic valve plate 110 is always located within the receiving groove 102, and the throttling orifice 101 is located at the bottom of the receiving groove 102. Specifically, "the elastic valve plate 110 is always located within the receiving groove 102" means that the elastic valve plate 110 is always located within the receiving groove 102, regardless of whether it is in the throttling position or the closed position. This structure can prevent the elastic valve plate 110 from interfering with the inner wall of the housing 90 when changing position, thereby avoiding any impact on the exhaust.

[0152] like Figure 33 and Figure 34 As shown, in this embodiment, the valve body 100 further includes a mounting hole 103 spaced apart from the throttling orifice 101. The one-way valve also includes a fixing handle 120, which passes through the mounting hole 103, and the elastic valve plate 110 is fixed to the valve body 100 through the fixing handle 120. The above structure is simple and easy to install.

[0153] like Figure 33 As shown, in this embodiment, the fixing handle 120 is snapped onto the valve body 100. The above structure is simple and easy to install.

[0154] like Figure 33 As shown, in this embodiment, the fixing handle 120 and the elastic valve plate 110 are an integral structure, and both are made of rubber or silicone. Specifically, the fixing handle 120 has a protrusion. During installation, the fixing handle 120 is inserted into the mounting hole 103. Due to the elasticity of the fixing handle 120, when the protrusion protrudes from the mounting hole 103, the protrusion expands outward, causing the fixing handle to engage with the mounting hole 103. This structure allows the elastic valve plate 110 to be easily installed on the valve body 100 while ensuring a tight seal at the mounting hole 103. It should be noted that the mounting hole 103 is generally located at the center of the valve body 100 (which can be adjusted according to requirements), and the hole diameter is machined according to the fixing handle 120.

[0155] In this embodiment, the housing 90 is made of rubber or silicone. This structure allows the one-way valve to be easily connected to an external connector (which can be a rigid connector) while ensuring airtightness.

[0156] like Figure 33 and Figure 34 As shown, in this embodiment, an annular groove 92 is provided on the inner wall of the outer casing 90, and the annular groove 92 is interference-fitted with the valve body 100. This structure ensures that the valve body 100 is fixed in the snap-fit ​​position, preventing the valve body 100 from moving axially in the outer casing 90, thus achieving a tight fit between the outer casing 90 and the valve body 100 and achieving a seal. Of course, in other embodiments not shown in the figure, the outer casing 90 can also be directly injection-molded onto the valve body 100, resulting in even better sealing.

[0157] like Figure 33 As shown, the connection between the channel wall of the air outlet channel 912 and the annular groove 92 is chamfered at 93; the connection between the channel wall of the air inlet channel 911 and the annular groove 92 is also chamfered at 93. This structure facilitates the installation of the valve body 100.

[0158] like Figure 35 As shown, this application also provides an oxygen concentrator. An embodiment of the oxygen concentrator according to this application includes a one-way valve 130, which is the one-way valve described above. Since the one-way valve has advantages such as simple structure, small size, ability to achieve throttling function, ease of processing, and low cost, the oxygen concentrator having it also possesses these advantages.

[0159] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps set forth in these embodiments do not limit the scope of the invention. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following figures denote similar items; therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.

[0160] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0161] In the description of this invention, it should be understood that the orientation or positional relationship indicated by directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" is generally based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this invention and simplifying the description. Unless otherwise stated, these directional terms 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 the scope of protection of this invention; the directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0162] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. An integrated air passage of an oxygen generator, characterized by, include: The airway shell (140) contains at least two of the following non-communicating chambers: a purge chamber (6), an oxygen storage chamber (7), and an oxygen outlet chamber (8). When the airway shell (140) includes the purge chamber (6), the airway shell (140) is provided with a first air outlet (1a), a second air outlet (2a) and a first air inlet (3a) that connect the purge chamber (6) with the outside atmosphere; When the airway shell (140) includes the oxygen storage chamber (7), the airway shell (140) is provided with a second air inlet (4a), a third air inlet (5a), a third air outlet (6a) and a fourth air outlet (7a) that connect the outside atmosphere to the oxygen storage chamber (7); When the airway shell (140) includes the oxygen outlet chamber (8), the airway shell (140) is provided with a fourth air inlet (8a) and a fifth air outlet (9a) that connect the outside atmosphere to the oxygen outlet chamber (8).

2. The integrated gas passage of the oxygen generator according to claim 1, wherein The first air outlet (1a), the second air outlet (2a), the third air outlet (6a), the first air inlet (3a), the second air inlet (4a), the third air inlet (5a), and the fourth air inlet (8a) are located on the shell wall of the air passage shell (140) on the same side.

3. The integrated gas passage of the oxygen generator according to claim 2, wherein When the airway shell (140) includes the purge chamber (6) and the oxygen storage chamber (7), the first air outlet (1a) and the second air outlet (2a) are arranged at intervals along the first direction n to form a first flow port group (10a), the second air inlet (4a) and the third air inlet (5a) are arranged at intervals along the first direction n to form a second flow port group (11a), the first air inlet (3a) and the third air outlet (6a) are arranged at intervals along the first direction n to form a third flow port group (12a), and the first flow port group (10a), the second flow port group (11a) and the third flow port group (12a) are arranged at intervals along a second direction m perpendicular to the first direction n.

4. The integrated gas passage of the oxygen generator according to claim 3, wherein The second direction m is the up-down direction, and the first flow port group (10a), the second flow port group (11a) and the third flow port group (12a) are arranged from top to bottom.

5. The integrated airway of the oxygen concentrator according to claim 4, characterized in that, In the case where the airway shell (140) also includes the oxygen outlet chamber (8), the fourth air inlet (8a) is located below the third flow port group (12a).

6. The integrated airway of the oxygen concentrator according to claim 1, characterized in that, The airway shell (140) includes a main body (141) and an extension (142). When the oxygen outlet chamber (8) is included in the airway shell (140), the oxygen outlet chamber (8) is located in the main body (141) and the extension (142). The purge chamber (6) and / or the oxygen storage chamber (7) are located in the main body (141). The fourth air inlet (8a) is provided on the main body (141), and the fifth air outlet (9a) is provided on the extension (142).

7. The integrated airway of the oxygen concentrator according to claim 6, characterized in that, The main body (141) includes a box body (1411) with an opening and a partition plate (1412). The extension (142) includes an extension body (1421) and a box cover (1422) covering the opening. The partition plate (1412) is sandwiched between the bottom plate of the box body (1411) and the box cover (1422). The lid (1422) and the main body (141) are an integral structure; or, The lid (1422) is sealed to the opening of the box body (1411) and the partition plate (1412) so that the multiple cavities in the airway shell (140) are not interconnected.

8. The integrated airway of the oxygen concentrator according to claim 7, characterized in that, The first air outlet (1a), the second air outlet (2a), the third air outlet (6a), the first air inlet (3a), the second air inlet (4a), the third air inlet (5a) and the fourth air inlet (8a) are located on the bottom plate of the box, and the fourth air outlet (7a) is located on the lid (1422).

9. The integrated airway of the oxygen concentrator according to claim 1, characterized in that, The airway shell (140) is provided with at least one detection hole (143), which is connected to the outside atmosphere and the oxygen outlet chamber (8).

10. The integrated airway of the oxygen concentrator according to claim 1, characterized in that, The integrated airway also includes: A first mounting structure (144) is used to mount a display device (180) and / or a circuit board.

11. An oxygen generator, characterized in that, include: First molecular sieve (20a); Second molecular sieve (20b); The distribution valve assembly (150) has a first port (8b) and a second port (9b) communicating with the first molecular sieve (20a) and the second molecular sieve (20b); An integrated airway (160), wherein the integrated airway (160) is the integrated airway of the oxygen concentrator according to any one of claims 1 to 10, wherein, When the airway housing (140) includes the purge chamber (6), the distribution valve assembly (150) is further provided with a fifth air inlet (1b) connected to the first air outlet (1a), a sixth air inlet (2b) connected to the second air outlet (2a), and a sixth air outlet (3b) connected to the first air inlet (3a). When the airway housing (140) includes the oxygen storage chamber (7), the distribution valve assembly (150) is further provided with a seventh air outlet (4b) connected to the second air inlet (4a), an eighth air outlet (5b) connected to the third air inlet (5a), and a seventh air inlet (6b) connected to the third air outlet (6a). In the case where the airway housing (140) includes the oxygen outlet chamber (8), the distribution valve assembly (150) is also provided with a ninth outlet (7b) connected to the fourth air inlet (8a).

12. The oxygen generator according to claim 11, characterized in that, A first one-way valve (130a) is provided between the first air outlet (1a) and the fifth air inlet (1b), a second one-way valve (130b) is provided between the second air outlet (2a) and the sixth air inlet (2b), a third one-way valve (130c) is provided between the second air inlet (4a) and the seventh air outlet (4b), and a fourth one-way valve (130d) is provided between the third air inlet (5a) and the eighth air outlet (5b).

Images