Portable oxygen generator and cover component thereof

Abstract

The embodiment of the utility model provides a portable oxygen generator and a cover part thereof, the portable oxygen generator comprises an oxygen generation part and the cover part connected with the oxygen generation part, the oxygen generation part comprises a cylindrical inner molecular sieve cylinder and a cylindrical outer molecular sieve cylinder, the inner molecular sieve cylinder is provided with a first opening, the outer molecular sieve cylinder is provided with a second opening, and the cover part is located on one axial side of the inner molecular sieve cylinder and the outer molecular sieve cylinder. The first end hole is formed in the bottom of the cover component and is communicated with the space in the inner molecular sieve cylinder; the second end hole is formed in the bottom of the cover component and is communicated with a space between the inner molecular sieve cylinder and the outer molecular sieve cylinder; the inner cylinder channel is connected with the first end hole; the outer cylinder channel is connected with the second end hole; the air inlet is communicated with a compressed air source; the exhaust port is communicated with the external environment of the oxygen generation part; the air inlet channel is used for connecting the air inlet with the inner cylinder channel and the outer cylinder channel; and an exhaust passage connecting the exhaust port with the inner cylinder passage and the outer cylinder passage. Therefore, the assembly time is reduced, and the portability of the oxygen generator is improved.

Description

Technical Field

[0001] The present application relates to the technical field of oxygen production, and in particular to a portable oxygen concentrator and a cover component thereof. Background Art

[0002] Oxygen inhalation can not only relieve the patient's symptoms, but also help healthy people improve their physical functions.

[0003] Traditional oxygen concentrators have the advantages of stable oxygen flow and oxygen supply concentration, but are not easy to transport and carry. Usually people can only breathe oxygen indoors, and they cannot meet people's needs for oxygen breathing at any time when they go out.

[0004] In order to meet people's oxygen needs, portable oxygen concentrators have developed rapidly. Portable oxygen concentrators usually use the principle of pressure swing adsorption (PSA) to separate nitrogen and oxygen in the air in the oxygen concentrator chamber to obtain oxygen-rich gas, and then lead the oxygen-rich gas out of the oxygen concentrator chamber through a pipeline for people to use. It has the advantages of small size, light weight and easy to carry.

[0005] It should be noted that the above introduction to the technical background is only for the convenience of providing a clear and complete description of the technical solutions of the present application and for the convenience of understanding by those skilled in the art. It cannot be considered that the above technical solutions are well known to those skilled in the art simply because they are described in the background technology section of the present application. Utility Model Content

[0006] The inventors found that the existing portable oxygen concentrators are connected to the oxygen production chamber through various hoses, which requires a lot of man-hours to assemble, and due to the complexity of the pipelines, manual connection is prone to errors; in addition, the pipelines occupy a large space, which is not conducive to further miniaturization of the portable oxygen concentrator.

[0007] In order to solve at least one of the above problems or other similar problems, the embodiments of the present application provide a portable oxygen concentrator and a cover component thereof to reduce assembly time and help improve the portability of the oxygen concentrator.

[0008] A first aspect of an embodiment of the present application provides a cover component of a portable oxygen concentrator, the portable oxygen concentrator comprising an oxygen concentrator and a cover component connected to the oxygen concentrator, the oxygen concentrator comprising a cylindrical first molecular sieve cartridge and a cylindrical second molecular sieve cartridge sleeved on the radially outer side of the first molecular sieve cartridge, the first molecular sieve cartridge having a first opening, the second molecular sieve cartridge having a second opening,

[0009] The cover component is located on one axial side of the first molecular sieve cartridge and the second molecular sieve cartridge,

[0010] The cover member has:

[0011] a first end hole disposed at the bottom of the cover component and communicating with the space in the first molecular sieve cartridge;

[0012] a second end hole disposed at the bottom of the cover component and communicating with the space between the first molecular sieve cartridge and the second molecular sieve cartridge;

[0013] an inner cylinder passage connected to the first end hole;

[0014] an outer cylinder channel connected to the second end hole;

[0015] an air inlet in communication with a source of compressed gas;

[0016] an exhaust port communicating with an external environment of the oxygen production unit;

[0017] an air inlet passage connecting the air inlet with the inner tube passage and the outer tube passage; and

[0018] An exhaust passage connects the exhaust port with the inner tube passage and the outer tube passage.

[0019] In addition, optionally, the axial projection of the first end hole is located within the range covered by the axial projection of the first opening, and the axial projection of the second end hole is located within the range between the radial outside of the axial projection of the first opening and the radial inside of the axial projection of the second opening.

[0020] In addition, optionally, the air intake passage and the air exhaust passage extend along the circumferential direction of the cover component and are arranged opposite to each other in the radial direction of the cover component.

[0021] In addition, optionally, the air intake passage includes a first air intake passage connecting the air intake port and the inner tube passage and a second air intake passage connecting the air intake port and the outer tube passage.

[0022] The exhaust passage includes a first exhaust passage connecting the exhaust port and the inner tube passage and a second exhaust passage connecting the exhaust port and the outer tube passage.

[0023] In addition, optionally, the cover component further includes a first three-way valve arranged on the inner tube channel side and a second three-way valve arranged on the outer tube channel side.

[0024] The first flow channel of the first three-way valve is connected to the inner tube channel, the second flow channel of the first three-way valve is connected to the first intake channel, and the third flow channel of the first three-way valve is connected to the first exhaust channel;

[0025] The first flow channel of the second three-way valve is connected to the outer tube channel, the second flow channel of the second three-way valve is connected to the second intake channel, and the third flow channel of the second three-way valve is connected to the second exhaust channel.

[0026] In addition, optionally, the cover component further includes a sound-absorbing structure disposed in the exhaust passage, and the sound-absorbing structure includes a plurality of sound-absorbing holes disposed on a side wall or a bottom of the exhaust passage.

[0027] In addition, optionally, the sound-absorbing structure also includes sound-absorbing cotton filled in the exhaust passage.

[0028] In addition, optionally, the cover component further has a positioning portion arranged at the bottom of the cover component, and the positioning portion protrudes from the bottom of the cover component toward the first molecular sieve cartridge and abuts against the inner wall of the first molecular sieve cartridge.

[0029] In addition, optionally, the cover component further comprises a sealing component arranged at the bottom of the cover component, and the sealing component is located between the bottom of the cover component and the ends of one axial side of the first molecular sieve cartridge and the second molecular sieve cartridge.

[0030] A second aspect of an embodiment of the present application provides a portable oxygen concentrator, comprising the cover component of the portable oxygen concentrator according to the first aspect.

[0031] One of the beneficial effects of the embodiments of the present application is that the connection between the air intake and exhaust paths of the oxygen generator is achieved through a simple structure. Compared with the connection through a hose, the modular cover component can be assembled more quickly and conveniently, reducing the assembly time, and occupies less space than a hose, which is conducive to improving the portability of the oxygen generator.

[0032] With reference to the following description and accompanying drawings, the specific embodiments of the present application are disclosed in detail, indicating the way in which the principles of the present application can be adopted. It should be understood that the embodiments of the present application are not limited in scope. Within the scope of the terms of the appended claims, the embodiments of the present application include many changes, modifications and equivalents.

[0033] Features described and / or illustrated with respect to one embodiment may be used in the same or similar manner in one or more other embodiments, combined with features in other embodiments, or substituted for features in other embodiments.

[0034] It should be emphasized that the term “include / comprises” when used herein refers to the presence of features, integers, steps or components, but does not exclude the presence or addition of one or more other features, integers, steps or components. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] The elements and features described in one figure or one implementation of the present application embodiment may be combined with the elements and features shown in one or more other figures or implementations. In addition, in the accompanying drawings, similar reference numerals represent corresponding parts in several figures and can be used to indicate corresponding parts used in more than one implementation.

[0036] The included drawings are used to provide a further understanding of the embodiments of the present application, which constitute a part of the specification, are used to illustrate the implementation methods of the present application, and together with the text description, explain the principles of the present application. Obviously, the drawings described below are only some embodiments of the present application, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0037] In the attached picture:

[0038] Figure 1 is a three-dimensional diagram of a portable oxygen concentrator according to an embodiment of the present application;

[0039] Figure 2 is a cross-sectional view of a portion of the oxygen concentrator and the cover component of the portable oxygen concentrator according to an embodiment of the present application along the axial direction;

[0040] Figure 3 is a three-dimensional diagram of an implementation of a cover component of an embodiment of the present application;

[0041] Figure 4 is a top view of a cover component of a portable oxygen concentrator according to an embodiment of the present application;

[0042] Figure 5 is a three-dimensional diagram of another embodiment of the cover component of the embodiment of the present application;

[0043] Figure 6 is a schematic diagram for explaining the air intake process of the first air intake passage of the cover member;

[0044] Figure 7 is a schematic diagram for explaining the exhaust process of the first exhaust passage of the cover member;

[0045] Figure 8 is a schematic diagram for explaining the air intake process of the second air intake passage of the cover member;

[0046] Fig. 9 It is a schematic diagram for explaining the exhaust process of the second exhaust passage of the cover component.

[0047] Tag Name

[0048] 1: Portable oxygen concentrator;

[0049] 10: Oxygen production unit;

[0050] 101: first molecular sieve cartridge;

[0051] 102: second molecular sieve cartridge;

[0052] 111: First opening;

[0053] 121: Second opening;

[0054] 20: cover part;

[0055] 20': cover part;

[0056] 201: first end hole;

[0057] 202: second end hole;

[0058] 203: air inlet;

[0059] 204: Exhaust port;

[0060] 205: inner tube channel;

[0061] 206: outer tube channel;

[0062] 207: air intake passage;

[0063] 208: Exhaust channel;

[0064] 209: three-way valve;

[0065] 21: Central part;

[0066] 210: three-way valve;

[0067] 211: first flow channel;

[0068] 212: second flow channel;

[0069] 213: third flow channel;

[0070] 22: outer ring part;

[0071] 220: positioning unit;

[0072] 271: first air intake passage;

[0073] 272: second air intake passage;

[0074] 280: Noise-absorbing structure;

[0075] 281: first exhaust passage;

[0076] 282: second exhaust passage;

[0077] 283: Cover plate;

[0078] 284: muffler hole;

[0079] 285: sound-absorbing cotton;

[0080] 291: first flow channel;

[0081] 292: second flow channel;

[0082] 293: third flow channel;

[0083] 321: first molecular sieve cartridge;

[0084] 322: second molecular sieve cartridge;

[0085] OO: Central axis. DETAILED DESCRIPTION

[0086] With reference to the accompanying drawings, the above and other features of the present application will become apparent through the following description. In the specification and the accompanying drawings, specific embodiments of the present application are specifically disclosed, which show some embodiments in which the principles of the present application can be adopted. It should be understood that the present application is not limited to the described embodiments. On the contrary, the present application includes all modifications, variations and equivalents that fall within the scope of the attached claims.

[0087] In the embodiments of the present application, the terms "first", "second", etc. are used to distinguish different elements in terms of title, but do not indicate the spatial arrangement or temporal order of these elements, etc., and these elements should not be limited by these terms. The term "and / or" includes any one and all combinations of one or more of the associated listed terms. The terms "comprising", "including", "having", etc. refer to the presence of the stated features, elements, components or components, but do not exclude the presence or addition of one or more other features, elements, components or components.

[0088] In the embodiments of the present application, the singular forms "a", "the", etc. may include plural forms and should be broadly understood as "a kind" or "a type" rather than being limited to the meaning of "one"; in addition, the term "said" should be understood to include both singular and plural forms, unless the context clearly indicates otherwise. In addition, the term "according to" should be understood as "at least in part according to...", and the term "based on" should be understood as "at least in part based on...", unless the context clearly indicates otherwise.

[0089] The embodiments of the present application will be described below with reference to the accompanying drawings.

[0090] The embodiment of the present application provides a cover component of a portable oxygen concentrator, and the cover component can be applied to the portable oxygen concentrator. Figure 1 is a three-dimensional diagram of a portable oxygen concentrator according to an embodiment of the present application. Figure 2It is a cross-sectional view of a part of the oxygen generator and the cover component of the portable oxygen concentrator according to the embodiment of the present application along the axial direction.

[0091] like Figure 2 As shown, the portable oxygen concentrator 1 (such as Figure 1 The oxygen generator 10 includes an oxygen production unit 10 and a cover member 20 connected to the oxygen production unit 10. The oxygen production unit 10 includes a cylindrical first molecular sieve cartridge 101 and a cylindrical second molecular sieve cartridge 102 sleeved radially outside the first molecular sieve cartridge 101. The first molecular sieve cartridge 101 has a first opening 111, and the second molecular sieve cartridge 102 has a second opening 121. In addition, the first molecular sieve cartridge 321 and the second molecular sieve cartridge 322 may be filled with an adsorbent ( Figure 2 (not shown), such as zeolite, produces oxygen-rich gas by variable adsorption. In addition, the first molecular sieve cartridge 321 and the second molecular sieve cartridge 322 can be controlled to circulate oxygen production, thereby achieving continuous oxygen production. The specific implementation method can refer to the relevant technology, and the embodiment of the present application is not limited to this.

[0092] In the embodiment of the present application, the direction along the central axis OO of the first molecular sieve cartridge 101 or the direction parallel to the central axis OO is referred to as "axial", the radial direction centered on the central axis OO is referred to as "radial", the direction radially away from the central axis OO is referred to as "radial outer side", the direction radially close to the central axis OO is referred to as "radial inner side", and the circumferential direction centered on the central axis OO is referred to as "circumferential direction". In addition, for the convenience of explanation, Figure 2 The direction from bottom to top in the figure shown is called "up". Figure 2 The direction from top to bottom in the illustrated drawings is referred to as "bottom", the surface located above is referred to as the "upper surface", and the surface located below is referred to as the "lower surface". Those skilled in the art should understand that the "upper" and "lower" described in the embodiments of the present application are only used to distinguish different elements in terms of names, but do not represent the spatial arrangement of these elements.

[0093] like Figure 2 As shown, the cover component 20 is located at one axial side of the first molecular sieve cartridge 101 and the second molecular sieve cartridge 102 , for example, the cover component 20 is located at the axial lower side of the first molecular sieve cartridge 101 and the second molecular sieve cartridge 102 .

[0094] Figure 3 is a three-dimensional diagram of an implementation of a cover component of an embodiment of the present application, Figure 4 4 is a top view of the cover component of the portable oxygen concentrator according to an embodiment of the present application.

[0095] like Figure 2 and Figure 3 As shown, the bottom of the cover member 20 is provided with a first end hole 201 and a second end hole 202. Figure 2 As shown, the first end hole 201 is connected to the space in the first molecular sieve cartridge 101 , and the second end hole 202 is connected to the space between the first molecular sieve cartridge 101 and the second molecular sieve cartridge 102 .

[0096] like Figure 3 As shown, the cover member 20 also has an air inlet 203 connected to a compressed gas source and an exhaust port 204 connected to an external environment. The compressed gas source is, for example, an air compressor, and the external environment is, for example, the environment where the portable oxygen concentrator 1 is located, which is not limited in the present embodiment.

[0097] like Figure 4 As shown, the cover component 20 also has an inner cylinder channel 205 connected to the first end hole 201, an outer cylinder channel 206 connected to the second end hole 202, an intake channel 207 connecting the intake port 203 with the inner cylinder channel 205 and the outer cylinder channel 206, and an exhaust channel 208 connecting the exhaust port 204 with the inner cylinder channel 205 and the outer cylinder channel 206.

[0098] Thus, the connection between the air intake path and the exhaust path is achieved by the cover component arranged on the lower side of the molecular sieve cylinder. Compared with the connection through a hose, the modular cover component can be assembled more quickly and conveniently, reduces the assembly time, and occupies a smaller space, which is conducive to improving the portability of the oxygen concentrator.

[0099] In some embodiments, the axial projection of the first end hole 201 is located within the range covered by the axial projection of the first opening 111, and the axial projection of the second end hole 202 is located within the range between the radial outer side of the axial projection of the first opening 111 and the radial inner side of the axial projection of the second opening 121. Figure 4 As shown, the first end hole 201 is located between the cover member 20 and the first molecular sieve cartridge 101 ( Figure 4 The central portion 21 corresponding to the space not marked in the figure, the second end hole 202 is located at the cover member 20 and the first molecular sieve cartridge 101 and the second molecular sieve cartridge 102 ( Figure 4 The space between (not marked) corresponds to the outer ring portion 22.

[0100] In addition, the number of the first end holes 201 may be one or more, and the number of the inner tube channels 205 is the same as the number of the first end holes 201; the number of the second end holes 202 may be one or more, and the number of the outer tube channels 206 is the same as the number of the second end holes 202. Figure 4As shown, the number of the first end hole 201 is one, the number of the inner cylinder channel 205 is also one, the number of the second end holes 202 is two, and the number of the outer cylinder channel 206 is also two. In addition, optionally, when there are multiple second end holes 202, the multiple second end holes 202 can be evenly distributed in the circumferential direction, so that the second molecular sieve cylinder 102 can be quickly inflated or exhausted.

[0101] In addition, optional, such as Figure 4 As shown, the intake passage 207 and the exhaust passage 208 extend along the circumferential direction of the cover member 20 and are arranged opposite to each other in the radial direction of the cover member 20. Thus, the structure of the cover member 20 is made compact, thereby reducing the volume of the cover member 20.

[0102] In some embodiments, Figure 4 As shown, the intake passage 207 includes a first intake passage 271 connecting the intake port 203 and the inner tube passage 205 and a second intake passage 272 connecting the intake port 203 and the outer tube passage 206, and the exhaust passage 208 includes a first exhaust passage 281 connecting the exhaust port 204 and the inner tube passage 205 and a second exhaust passage 282 connecting the exhaust port 204 and the outer tube passage 206.

[0103] Figure 5 is a three-dimensional diagram of another embodiment of the cover component of the embodiment of the present application, Figure 6 is a schematic diagram for explaining the air intake process of the first air intake passage of the cover component. Figure 7 is a schematic diagram for explaining the exhaust process of the first exhaust channel of the cover component. Figure 8 is a schematic diagram for explaining the air intake process of the second air intake passage of the cover component. Fig. 9 It is a schematic diagram for explaining the exhaust process of the second exhaust passage of the cover component.

[0104] In some embodiments, the cover component may further include a valve body, through which the on / off of each gas path is controlled. Figure 5 As shown, the cover component 20' may include a channel 205 ( Figure 5 The first three-way valve 209 on the side of the outer tube channel 206 (not shown) and the Figure 5 The first three-way valve 209 and the second three-way valve 210 may be solenoid valves.

[0105] like Figure 6 and Figure 7 As shown, the first flow channel 291 of the first three-way valve 209 is connected to the inner tube channel 205 , the second flow channel 292 of the first three-way valve 209 is connected to the first intake channel 271 , and the third flow channel 293 of the first three-way valve 209 is connected to the first exhaust channel 281 .

[0106] like Figure 8 and Fig. 9 As shown, the first flow channel 211 of the second three-way valve 210 is connected to the outer tube channel 206 , the second flow channel 212 of the second three-way valve 210 is connected to the second intake channel 272 , and the third flow channel 213 of the second three-way valve 210 is connected to the second exhaust channel 282 .

[0107] Combine the following Figures 6 to 8 The process of supplying air into the oxygen generator through the cover member and the process of exhausting air from the oxygen generator will be described.

[0108] When it is necessary to supply air to the oxygen production unit 10, Figure 6 As shown by the arrow, high-pressure air can enter the first air inlet channel 271 through the air inlet 203, and then enter the first flow channel 291 through the second flow channel 292 of the first three-way valve 209, thereby entering the inner cylinder channel 205, and then enter the first molecular sieve cylinder 101 through the inner cylinder channel 205 and the first end hole 201; Figure 8 As shown by the arrow, high-pressure air can enter the second air inlet channel 272 through the air inlet 203, and then enter the first flow channel 211 through the second flow channel 212 of the second three-way valve 210, thereby entering the outer cylinder channel 206, and then through the outer cylinder channel 206 and the second end hole 202 (such as Figure 2 As shown) enters between the second molecular sieve cartridge 102 and the first molecular sieve cartridge 101.

[0109] When the oxygen production unit 10 needs to be exhausted, Figure 7 As shown by the arrow, the first molecular sieve cartridge 101 ( Figure 7 The gas in the first three-way valve 209 (not shown) enters the first flow channel 291 through the inner tube channel 205, and then enters the third flow channel 293 from the first flow channel 291, and then enters the first exhaust channel 281, and then is discharged through the exhaust port 204; Fig. 9 As shown by the arrow, the second molecular sieve cartridge 102 ( Fig. 9 The gas in the second three-way valve 209 (not shown) enters the first flow channel 211 through the outer tube channel 206, and then enters the third flow channel 213 from the first flow channel 211, and then enters the second exhaust channel 282, and then is discharged through the exhaust port 204.

[0110] In the above example, when the first flow channel 291 of the first three-way valve 209 is connected to one of the second flow channel 292 and the third flow channel 293, it is not connected to the other. When the first flow channel 211 of the second three-way valve 210 is connected to one of the second flow channel 212 and the third flow channel 213, it is not connected to the other. Therefore, by controlling the first three-way valve 209 and the second three-way valve 210, the first molecular sieve cartridge 101 and the second molecular sieve cartridge 102 can alternately intake and exhaust air, that is, the first molecular sieve cartridge 101 and the second molecular sieve cartridge 102 can produce oxygen in turn, thereby realizing continuous oxygen production.

[0111] In addition, optional, such as Figure 2 As shown, the cover member 20 further includes a sound-absorbing structure 280 disposed in the exhaust passage 208. The sound-absorbing structure 280 includes a plurality of sound-absorbing holes 284 disposed on the side wall of the exhaust passage 208. Figure 3 As shown, a matrix of muffler holes 284 is formed on the side wall of the exhaust channel 208. The arrangement of the muffler holes 284 is not limited thereto, and other arrangements may also be adopted. The embodiment of the present application does not limit this. In addition, the muffler holes 284 may also be arranged at the bottom of the exhaust channel 208.

[0112] In addition, the silencer hole 284 can also play an exhaust function, that is, the exhaust port 204 includes at least one silencer hole 284. Thus, the exhaust gas discharged from the molecular sieve cartridge is silenced through the silencer hole 284 and then discharged into the external environment, which is conducive to reducing the noise during oxygen production.

[0113] In addition, optional, such as Figure 2 As shown, the noise reduction structure 280 may further include noise reduction cotton 285, which is filled in the exhaust passage 208 to further reduce the noise during exhaust. Figure 2 As shown, the silencing structure 280 may also include a cover plate 283 disposed on the upper side of the exhaust channel 208, so as to seal the exhaust channel 208 and fix the silencing cotton 285, so that the exhaust gas discharged from the molecular sieve cartridge enters the silencing cotton 285 and then is discharged to the external environment through the silencing hole 284, thereby reducing the exhaust noise as much as possible. The implementation of the silencing cotton 285 can refer to the relevant technology, and the embodiment of the present application does not limit this.

[0114] In addition, optional, such as Figure 2 and Figure 5 As shown, the cover member 20 or 20' may also have a first molecular sieve cartridge 101 ( Figure 5 The positioning portion 220 is provided at the bottom of the cover member 20 or 20'. Figure 2As shown, the positioning portion 220 protrudes from the bottom of the cover part 20 toward the first molecular sieve cartridge 101 and abuts against the inner wall of the first molecular sieve cartridge 101, thereby, when the first molecular sieve cartridge is installed on the cover part, it is convenient to align the central axis of the first molecular sieve cartridge with the center of the cover part, thereby ensuring that the first end hole and the second end hole are aligned with the two molecular sieve cartridges.

[0115] In addition, optionally, the cover member 20 or 20' may also have a sealing member, which is located between the bottom of the cover member 20 or 20' and the axial lower end of the first molecular sieve cartridge 101 and the second molecular sieve cartridge 102. The sealing member may be a sealing gasket or a sealing film formed by coating a sealing material, which is not limited in the embodiment of the present application. Thus, the gas channel in the cover member and the space between the two molecular sieve cartridges are sealed to improve the oxygen production efficiency.

[0116] According to the cover component of the embodiment of the present application, the connection between the air intake path and the exhaust path of the oxygen generator is achieved through a simple structure. Compared with the connection through a hose, the modular cover component can be assembled more quickly and conveniently, reducing the assembly time, and occupies less space than a hose, which is conducive to improving the portability of the oxygen generator.

[0117] An embodiment of the present application further provides a portable oxygen concentrator, which includes the cover component described in any of the aforementioned embodiments. Since the structure of the cover component has been described in detail before, its content is incorporated here and the description is omitted here.

[0118] The portable oxygen concentrator of the embodiment of the present application may also include other components, for example, it may also include a pipeline for leading the oxygen-enriched gas from the oxygen-generating unit and an oxygen storage unit for storing the oxygen-enriched gas. Optionally, an upper end cap may be provided on the axial upper side of the first molecular sieve cartridge 101 and the second molecular sieve cartridge 102, and a channel connecting the first molecular sieve cartridge 101 and the second molecular sieve cartridge 102 is formed in the upper end cap to replace the pipeline of the hose.

[0119] In some embodiments, the upper end cover may include, for example, a hole connected to the upper opening of the first molecular sieve cylinder 101 and the second molecular sieve cylinder 102, and an oxygen outlet channel, a pressure equalizing channel, a backflush channel, etc. connected to the hole. The oxygen storage section is connected to the oxygen outlet channel, for example, through a one-way valve, so that the oxygen-rich gas can only flow from the oxygen outlet channel to the oxygen storage section in one direction and cannot flow in the opposite direction. For example, a pressure equalizing valve is provided in the pressure equalizing channel, and the pressure equalization of the two molecular sieve cylinders is achieved by controlling the pressure equalizing valve. The embodiment of the present application does not limit how to control the pressure equalizing valve, and reference may be made to related technologies. The backflush channel, for example, connects the first molecular sieve cylinder 101 and the second molecular sieve cylinder 102, and uses the oxygen-rich gas generated by one molecular sieve cylinder to backflush the other molecular sieve cylinder, thereby reducing the nitrogen proportion in the other molecular sieve cylinder.

[0120] In addition, the portable oxygen concentrator of the embodiment of the present application may also include a muffler, a nasal oxygen tube, etc. The embodiment of the present application does not limit the specific structure of the portable oxygen concentrator, and it can be designed according to actual needs. The specific structure of other components can refer to the relevant technology.

[0121] It is worth noting that the above only describes the components or modules related to the present application, but the present application is not limited thereto. The portable oxygen concentrator and its cover component of the embodiment of the present application may also include other components or modules, and the specific contents of these components or modules may refer to the relevant technology.

Claims

1. A cover component of a portable oxygen concentrator, characterized in that: The portable oxygen concentrator comprises an oxygen concentrator and a cover member connected to the oxygen concentrator, wherein the oxygen concentrator comprises a first molecular sieve cartridge in a cylindrical shape and a second molecular sieve cartridge in a cylindrical shape sleeved on the radially outer side of the first molecular sieve cartridge, wherein the first molecular sieve cartridge has a first opening, and the second molecular sieve cartridge has a second opening. The cover component is located on one axial side of the first molecular sieve cartridge and the second molecular sieve cartridge, The cover member has: a first end hole disposed at the bottom of the cover component and communicating with the space in the first molecular sieve cartridge; a second end hole disposed at the bottom of the cover component and communicating with the space between the first molecular sieve cartridge and the second molecular sieve cartridge; an inner cylinder passage connected to the first end hole; an outer cylinder channel connected to the second end hole; an air inlet in communication with a source of compressed gas; an exhaust port communicating with an external environment of the oxygen production unit; an air inlet passage connecting the air inlet with the inner tube passage and the outer tube passage; as well as An exhaust passage connects the exhaust port with the inner tube passage and the outer tube passage.

2. The cover member of the portable oxygen concentrator according to claim 1, characterized in that: The axial projection of the first end hole is located within the range covered by the axial projection of the first opening, and the axial projection of the second end hole is located within the range between the radial outside of the axial projection of the first opening and the radial inside of the axial projection of the second opening.

3. The cover member of the portable oxygen concentrator according to claim 1, characterized in that: The intake passage and the exhaust passage extend along a circumferential direction of the cover member and are disposed opposite to each other in a radial direction of the cover member.

4. The cover member of the portable oxygen concentrator according to claim 1, characterized in that: The air intake passage includes a first air intake passage connecting the air intake port and the inner tube passage and a second air intake passage connecting the air intake port and the outer tube passage. The exhaust passage includes a first exhaust passage connecting the exhaust port and the inner tube passage and a second exhaust passage connecting the exhaust port and the outer tube passage.

5. The cover member of the portable oxygen concentrator according to claim 4, characterized in that: The cover member further includes a first three-way valve disposed on the inner tube channel side and a second three-way valve disposed on the outer tube channel side. The first flow channel of the first three-way valve is connected to the inner tube channel, the second flow channel of the first three-way valve is connected to the first intake channel, and the third flow channel of the first three-way valve is connected to the first exhaust channel; The first flow channel of the second three-way valve is connected to the outer tube channel, the second flow channel of the second three-way valve is connected to the second intake channel, and the third flow channel of the second three-way valve is connected to the second exhaust channel.

6. The cover member of the portable oxygen concentrator according to claim 1, characterized in that: The cover component further includes a sound-absorbing structure disposed in the exhaust passage, wherein the sound-absorbing structure includes a plurality of sound-absorbing holes disposed on a side wall or a bottom of the exhaust passage.

7. The cover member of the portable oxygen concentrator according to claim 6, characterized in that: The noise reduction structure also includes noise reduction cotton filled in the exhaust passage.

8. The cover member of the portable oxygen concentrator according to claim 1, characterized in that: The cover component further includes a positioning portion disposed at the bottom of the cover component. The positioning portion protrudes from the bottom of the cover component toward the first molecular sieve cartridge and abuts against an inner wall of the first molecular sieve cartridge.

9. The cover member of the portable oxygen concentrator according to claim 1, characterized in that: The cover component further includes a sealing component disposed at the bottom of the cover component, and the sealing component is located between the bottom of the cover component and ends of one axial side of the first molecular sieve cartridge and the second molecular sieve cartridge.

10. A portable oxygen concentrator, characterized in that: The portable oxygen concentrator comprises the cover member of the portable oxygen concentrator according to any one of claims 1 to 9.

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