Portable oxygen generator

Abstract

A portable oxygen generator (1), the portable oxygen generator (1) comprising a housing (10), and an air inlet (11) and an oxygen outlet (12) being defined on the housing (10). A filter mechanism (20) communicates with the air inlet (11), and the oxygen outlet (12) communicates with an outlet of an oxygen storage mechanism (70). An oxygen generation mechanism (50) comprises at least two molecular sieve units, and the molecular sieve units each comprise a first port (511) and a second port (512). A first gas path module (40) comprises a first inlet (41), a first outlet (42), and at least two first communication ports (43). The first inlet (41) communicates with an outlet of a compression mechanism (30), and a first communication port (43) communicates with a first port (511) of a molecular sieve unit. The first gas path module (40) can control the first inlet (41) to be in communication with one of the first communication ports (43) and control the other first communication port (43) to be in communication with the first outlet (42). A second gas path module (60) comprises a second outlet and at least two second communication ports. The second outlet communicates with an inlet of the oxygen storage mechanism (70), and a second communication port communicates with a second port (512) of a molecular sieve unit.

Description

Portable oxygen concentrator

[0001] This application claims priority to the Chinese patent application filed with the China Patent Office on January 10, 2024, with application number 202420068438.2 and invention name “Portable Oxygen Concentrator”, the entire contents of which are incorporated by reference into this application. Technical Field

[0002] The present application relates to the technical field of oxygen concentrators, and in particular to a portable oxygen concentrator. Background Art

[0003] With the development of society, the number of elderly people is gradually increasing, and the incidence of diseases such as chronic obstructive pulmonary disease, heart disease, pulmonary fibrosis, and asthma is also increasing accordingly. Oxygen inhalation can effectively alleviate and treat the above diseases.

[0004] With the improvement of medical standards and people's deeper understanding of diseases, more and more people are paying attention to home healthcare, and oxygen concentrators are becoming increasingly popular. Traditional home oxygen concentrators are large and heavy, usually indoors or in fixed locations, requiring users to go to a specific location to inhale oxygen.

[0005] When people who need oxygen go out or travel, they cannot carry home oxygen concentrators with them, which brings great inconvenience to them. Usually, the internal structure of portable oxygen concentrators is relatively compact, and each device is connected by an additional small air tube, which affects the compactness of the portable oxygen concentrator and has poor oxygen production efficiency.

[0006] Application Contents

[0007] The present application provides a portable oxygen concentrator to solve the problems of the portable oxygen concentrator in the prior art such as its non-compact structure and poor oxygen production efficiency.

[0008] According to the portable oxygen concentrator of the present application, it includes a shell, the shell defines an air inlet and an oxygen outlet, and the shell is provided with a plurality of filtering mechanisms, a compression mechanism, a first air path module, an oxygen production mechanism, a second air path module and an oxygen storage mechanism that are connected in sequence. The filtering mechanism is connected to the air inlet, and the oxygen outlet is connected to the outlet of the oxygen storage structure. The oxygen production mechanism includes at least two molecular sieve units, and the molecular sieve unit includes a first port and a second port. The first air path module includes a first inlet, a first outlet and at least two first communication ports. The first inlet is connected to the outlet of the compression mechanism, and the first communication port is connected to the first port of the molecular sieve unit. The first air path module can control the first inlet to be connected to one of the first communication ports and the other first communication port to be connected to the first outlet.

[0009] The second gas circuit module includes a second outlet and at least two second connecting ports, the second outlet is connected to the inlet of the oxygen storage mechanism, and the second connecting port is connected to the second port of the molecular sieve unit. The second gas circuit module can control the second outlet to be connected to one of the second connecting ports and two of the second connecting ports.

[0010] According to the portable oxygen concentrator of the present application, the oxygen production mechanism and the compression mechanism are arranged side by side, the oxygen storage mechanism is arranged above the compression mechanism, the first port and the second port are respectively arranged at the two ends of the height direction of the molecular sieve unit, and the second gas path module is arranged above the first gas path module.

[0011] Optionally, the portable oxygen concentrator further includes a cooling fan, the oxygen storage mechanism is arranged above the compression mechanism, the second air path module, the compression mechanism and the oxygen storage mechanism jointly define an installation space, and the cooling fan is located in the installation space.

[0012] Optionally, a silent cover is provided in the shell, the compression mechanism is provided in the silent cover, and a first mounting position, a second mounting position, a third mounting position and a fourth mounting position are provided on the outer wall of the silent cover, the first mounting position and the second mounting position are provided on the outer wall of the silent cover on the side close to the oxygen production mechanism, the third mounting position is provided on the outer wall of the silent cover on the side away from the oxygen production mechanism, and the fourth mounting position is provided at the top of the silent cover, the first air path module is fixed to the first mounting position, the second air path module is fixed to the second mounting position, the filter mechanism is fixed to the third mounting position, and the cooling fan is fixed to the fourth mounting position.

[0013] Optionally, the portable oxygen concentrator also includes a main control board, the compression mechanism, the first air path module and the second air path module are all electrically connected to the main control board, and a plurality of support columns are provided on the front outer wall of the silent cover, and the plurality of support columns are mechanically connected to the main control board.

[0014] Optionally, the shell includes a base and a support seat that are clamped to each other, a power cavity is defined in the base, a power module is provided in the power cavity, a first conductive plate electrically connected to the power module is provided on the base, a second conductive plate is provided on the support seat, and the main control board, the second conductive plate and the first conductive plate are in contact with each other and electrically conductive in sequence.

[0015] Optionally, a bracket is provided on the support seat, and the oxygen-generating mechanism is respectively clamped with the support seat and the bracket. A rotatable handle is provided at the bottom of the oxygen-generating mechanism, and a receiving groove is also provided at the bottom of the oxygen-generating mechanism. The handle can be rotated to a position embedded in the receiving groove and a position outside the receiving groove.

[0016] Optionally, the first air path module also includes a guide pipe, which includes a second guide port, a third guide port and the first inlet, the first inlet is connected to the inlet of the compression mechanism, and the guide pipe can control the connection between the first inlet and the second guide port and the connection between the second guide port and the first outlet. The first air path module is provided with a locking assembly and at least two movable pipes, the two ends of the movable pipe are respectively sealed with the first port of the molecular sieve unit and the guide pipe, and the movable pipe can be moved in the axial direction, the locking assembly is transmission-connected to the movable pipe, and the locking assembly has a locking position and an unlocking position. When the locking assembly is in the locking position, the movable pipe is clamped or plugged with the first port of the molecular sieve unit, and when the locking assembly is in the unlocking position, the movable pipe is separated from the first port of the molecular sieve unit.

[0017] Optionally, the first outlet is located inside the soundproof cover.

[0018] Optionally, a silencer is provided in the diversion pipeline, and the silencer is located at the first outlet.

[0019] The above technical solution provided by the embodiment of the present application has the following advantages compared with the prior art:

[0020] The portable oxygen concentrator provided by the embodiment of the present application comprises a filtering mechanism, a compression mechanism, a first air circuit module, an oxygen concentrator, a second air circuit module and an oxygen storage mechanism which are connected in sequence, wherein the compression mechanism forms a negative pressure at the inlet of the filtering mechanism to draw air into the filtering mechanism, the filtering mechanism is used to filter the air and remove particles such as tiny dust, the purified air enters the first air circuit module through the first inlet after being pressurized by the compression mechanism, the first air circuit module controls the first inlet to be connected to a first connecting port, the compressed air enters the molecular sieve unit through the first connecting port and the first port for adsorption filtration, thereby becoming high-concentration oxygen, and the oxygen passes through the first connecting port and the first port to be adsorbed and filtered. The oxygen flows out from the second port and enters the second gas path module through the second connecting port. The oxygen is divided in the second gas path module. Part of the oxygen enters the oxygen storage mechanism through the second connecting port and the second outlet, and part of the oxygen enters another molecular sieve unit through the second connecting port and another second connecting port, flushing the waste gas generated by the molecular sieve unit in the previous round of oxygen production, and the remaining waste gas is discharged through the first port and the first outlet of the flushed molecular sieve unit. In this way, the entire oxygen production cycle can be completed with fewer components and the oxygen production waste gas can be flushed at the same time. The structure is compact and the volume is small while the oxygen production quality is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The accompanying drawings are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present invention, and together with the description, serve to explain the principles of the present invention.

[0022] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0023] One or more embodiments are exemplarily illustrated by pictures in the corresponding drawings. These exemplifications do not constitute limitations on the embodiments. Elements with the same reference numerals in the drawings are represented as similar elements. Unless otherwise stated, the figures in the drawings do not constitute proportional limitations.

[0024] FIG1 is a cross-sectional view of a portable oxygen concentrator provided in an embodiment of the present application;

[0025] FIG2 is an exploded view of a portable oxygen concentrator provided in an embodiment of the present application;

[0026] FIG3 is a perspective view of a partial structure of a portable oxygen concentrator provided in an embodiment of the present application;

[0027] FIG4 is a cross-sectional view of a partial structure of a portable oxygen concentrator provided in an embodiment of the present application;

[0028] FIG5 is a cross-sectional view of a first gas circuit module of a portable oxygen concentrator provided in an embodiment of the present application;

[0029] FIG6 is a cross-sectional view of an oxygen-generating mechanism of a portable oxygen concentrator provided in an embodiment of the present application;

[0030] FIG7 is a perspective view of an oxygen storage mechanism of a portable oxygen concentrator provided in an embodiment of the present application;

[0031] FIG8 is a cross-sectional view of an oxygen storage mechanism of a portable oxygen concentrator provided in an embodiment of the present application;

[0032] FIG9 is a perspective view of a base of a portable oxygen concentrator provided in an embodiment of the present application;

[0033] FIG10 is a cross-sectional view of a base of a portable oxygen concentrator provided in an embodiment of the present application.

[0034] Description of the accompanying drawings: Portable oxygen concentrator 1, housing 10, air inlet 11, filter 111, oxygen outlet 12, base 13, support seat 14, bracket 15, filter mechanism 20, filter seat 21, filter cotton 22, filter cover 23, compression mechanism 30, silent cover 31, support column 311, air inlet pipe 32, first air path module 40, first inlet 41, first outlet 42, first connecting port 43, guide pipe 45, second guide port 452, silencer 454, locking assembly 46, movable pipe 47, air pipe fixing plate 48, oxygen generating mechanism 50, handle 51, first port 511, second port 512, oxygen generating adsorbent 52, spring 53, adsorbent pressing plate 54, first adsorbent filter 55, adsorbent cartridge 56, second air path module 60, air path diversion module 63, control module 64, Oxygen storage mechanism 70 , oxygen storage tank 71 , oxygen sensor 72 , cooling fan 80 , main control board 90 , power module 91 , first conductive plate 92 , second conductive plate 93 , display circuit board 94 , key film 95 . DETAILED DESCRIPTION

[0035] To make the purpose, technical solutions, and advantages of the embodiments of this application more clear, the technical solutions in the embodiments of this application will be clearly and completely described below in conjunction with the drawings in the embodiments of this application. Obviously, the described embodiments are part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0036] The following disclosure provides many different embodiments or examples for implementing different structures of the present invention. To simplify the disclosure of the present invention, the components and configurations of specific examples are described below. Of course, these are merely examples and are not intended to limit the present invention. In addition, the present invention may repeat reference numbers and / or letters in different examples. This repetition is for the purpose of simplicity and clarity and does not in itself indicate the relationship between the various embodiments and / or configurations discussed.

[0037] For ease of description, spatially relative terms may be used herein to describe the relative position or movement of one element or feature relative to another element or feature as shown in the figures, such as "inside," "outside," "inside," "outside," "below," "beneath," "above," "above," "front," "back," and the like. Such spatially relative terms are intended to include different orientations of the device in use or operation other than the orientation depicted in the figures. For example, if the device in the figures undergoes a positional flip or a change in posture or a change in motion, then these directional indications will also change accordingly. For example, an element described as "below" or "below" another element or feature will subsequently be oriented as "above" or "above" another element or feature. Thus, the example term "below" can include both above and below orientations. The device may be oriented otherwise (rotated 90 degrees or in other orientations) and the spatially relative descriptors used herein will be interpreted accordingly.

[0038] As shown in Figures 1, 2, 3 and 7, a portable oxygen concentrator according to an embodiment of the present application includes a housing 10, which defines an air inlet 11 and an oxygen outlet 12. The housing 10 is provided with a plurality of filter mechanisms 20, a compression mechanism 30, a first air path module 40, an oxygen production mechanism 50, a second air path module 60 and an oxygen storage mechanism 70 that are connected in sequence. The filter mechanism 20 is connected to the air inlet 11, and the oxygen outlet 12 is connected to the outlet of the oxygen storage structure. The oxygen production mechanism 50 includes at least two molecular sieve units, and the molecular sieve unit includes a first port 511 and a second port 512.

[0039] The first gas circuit module 40 includes a first inlet 41, a first outlet 42 and at least two first connecting ports 43. The first inlet 41 is connected to the outlet of the compression mechanism 30, and the first connecting port 43 is connected to the first port 511 of the molecular sieve unit. The first gas circuit module 40 can control the first inlet 41 to be connected to one of the first connecting ports 43 and the other first connecting port 43 to be connected to the first outlet 42.

[0040] The second gas circuit module 60 includes a second outlet and at least two second connecting ports. The second outlet is connected to the inlet of the oxygen storage mechanism 70, and the second connecting port is connected to the second port 512 of the molecular sieve unit. The second gas circuit module 60 can control the second outlet to be connected to one of the second connecting ports and the two second connecting ports.

[0041] In detail, the filter mechanism 20, the compression mechanism 30, the first gas path module 40, the oxygen production mechanism 50, the second gas path module 60 and the oxygen storage mechanism 70 are connected in sequence, wherein the compression mechanism 30 forms a negative pressure at the inlet of the filter mechanism 20, and draws air into the filter mechanism 20. The filter mechanism 20 is used to filter the air and remove particles such as fine dust. The purified air enters the compression mechanism 30 and is pressurized and then enters the first gas path module 40 through the first inlet 41. The first gas path module 40 controls the first inlet 41 to be connected to a first connecting port 43. The compressed air enters the molecular sieve unit through the first connecting port 43 and the first port 511. Adsorption filtration is performed to form high-concentration oxygen, and the oxygen flows out through the second port 512 and enters the second gas path module 60 through the second connecting port. The oxygen is split in the second gas path module 60, and part of the oxygen enters the oxygen storage mechanism 70 through the second connecting port and the second outlet, and part of the oxygen enters another molecular sieve unit through the second connecting port and another second connecting port, flushing the waste gas generated by the molecular sieve unit in the previous round of oxygen production, and discharging the remaining waste gas through the first port 511 and the first outlet 42 of the flushed molecular sieve unit. In this way, the efficiency of the molecular sieve in oxygen production can be improved when it produces oxygen next time.

[0042] It is understandable that the first gas circuit module 40 and the second gas circuit module 60 control the communication between the ports, which can be achieved through one or more three-way valves or a combination of two-way valves.

[0043] In addition, at least two molecular sieve units are used to produce oxygen alternately. After one molecular sieve unit finishes producing oxygen, another molecular sieve unit produces oxygen and uses the produced oxygen to flush the molecular sieve unit that produced oxygen on the previous one, flushing out the waste gas generated by the sample preparation to improve the efficiency of the molecular sieve unit in producing oxygen next time. Since the portable oxygen concentrator is small in size, the volume of the molecular sieve unit is correspondingly limited. Increasing the oxygen production efficiency of each molecular sieve unit can greatly improve the oxygen production efficiency of the portable oxygen concentrator. For example, the molecular sieve units can be two, three, four, five, six, etc. In the embodiment shown in Figure 1, the number of molecular sieve units is two.

[0044] According to the portable oxygen concentrator of the embodiment of the present application, it is possible to complete the entire oxygen production cycle with fewer components and at the same time flush the oxygen production exhaust gas, thereby improving the oxygen production quality while achieving a compact structure and a smaller volume.

[0045] As shown in Figures 1, 2, 3, and 7, in one specific embodiment, the filter mechanism 20 includes a filter seat 21, filter cotton 22, and a filter cover 23. The filter seat 21 and filter cover 23 are detachably connected, including but not limited to snap-fit ​​connections, threaded connections, fastener connections, and magnetic connections. The filter cotton 22 is sandwiched between the filter seat 21 and the filter cover 23. The filter mechanism 20 is located between the inlet of the compression mechanism 30 and the air inlet 11 of the housing 10, so that all air entering the compression mechanism 30 is filtered.

[0046] As shown in Figures 1, 2 and 6, in a specific embodiment, the molecular sieve unit includes an adsorbent cylinder 56, which defines at least two chambers, each of which is filled with an oxygen-generating adsorbent 52. An adsorbent pressure plate 54 is provided below the oxygen-generating adsorbent 52, and a spring 53 is provided between the adsorbent pressure plate 54 and the adsorbent cylinder 56. The spring 53 is in a compressed state, so that the oxygen-generating adsorbent 52 is always in a compressed state, ensuring efficient gas separation.

[0047] As shown in Figures 1, 2 and 6, in a specific embodiment, a first adsorbent filter 55 is further provided in the adsorbent cylinder 56. The first adsorbent filter 55 is provided between the oxygen-generating adsorbent 52 and the second port 512. Since the oxygen-generating adsorbent 52 will be pulverized during use, and the particle size of the pulverized molecular sieve is relatively small, the provision of the first adsorbent filter 55 can filter the adsorbent and improve the cleanliness of the oxygen.

[0048] In a specific embodiment, a second adsorbent filter is provided in the adsorbent cartridge 56 or upstream of the first outlet 42 in the first gas path module 40 to filter the powdered molecular sieve that may be carried in the flushed exhaust gas.

[0049] As shown in Figures 7 and 8, in a specific embodiment, the oxygen storage mechanism 70 includes a gas storage tank, which is connected to the second outlet and the oxygen outlet 12. When the oxygen produced by the oxygen production mechanism 50 enters the gas storage tank, the gas storage tank can store gas and maintain pressure. In order to make the overall structure of the portable oxygen concentrator more compact, the shape of the oxygen storage tank 71 is configured to imitate the remaining installation space. For example, in the present application, the shape of the oxygen storage tank 71 is configured to be similar to an inverted cone to more efficiently utilize the space in the shell 10.

[0050] As shown in FIG8 , in a specific embodiment, an oxygen sensor 72 is provided at the outlet of the gas storage tank for detecting the oxygen flow rate of the oxygen outlet 12 , so as to detect whether the oxygen flow rate reaches a user-set value.

[0051] As shown in FIG. 1 and FIG. 2 , in a specific embodiment, the second gas path module 60 includes a gas path diversion module 63 and a control module 64 that are interconnected.

[0052] As shown in FIG. 1 , FIG. 2 and FIG. 4 , in a specific embodiment, a filter screen 111 is provided at the air inlet 11 , and the compression mechanism 30 has an air inlet pipe 32 , which connects the air inlet 11 and the compression mechanism 30 .

[0053] As shown in Figures 1 and 2, according to the portable oxygen concentrator of the embodiment of the present application, the oxygen production mechanism 50 and the compression mechanism 30 are arranged side by side, the oxygen storage mechanism 70 is arranged above the compression mechanism 30, the first port 511 and the second port 512 are respectively arranged at the two ends of the height direction of the molecular sieve unit, and the second gas path module 60 is arranged above the first gas path module 40. In this way, the positions of various components can be reasonably arranged, making the overall structure of the portable oxygen concentrator more compact.

[0054] As shown in Figures 1 and 2, in a specific embodiment, the oxygen outlet 12 is provided at the top of the shell 10, and the air inlet 11 is provided on the side wall of the shell 10. The air inlet 11 includes one or more air inlets. In order to save the movement path of air in the shell 10, the air inlet 11 is located on the same side wall of the shell 10 when it is one or more.

[0055] It is understandable that, in order to fit the filter mechanism 20 , the shape of the air inlet 11 is made according to the appearance of the filter mechanism 20 , so that the air inlet 11 is fully fitted with the filter mechanism 20 to avoid air leakage.

[0056] As shown in Figures 1 and 2, in some embodiments, the portable oxygen concentrator further includes a cooling fan 80, the oxygen storage mechanism 70 is arranged above the compression mechanism 30, the second air path module 60, the compression mechanism 30 and the oxygen storage mechanism 70 jointly define an installation space, and the cooling fan 80 is located in the installation space.

[0057] In detail, the cooling fan 80 is used to dissipate heat for the compression mechanism 30 and other heat-generating components in the housing 10. The oxygen storage mechanism 70 is arranged above the compression mechanism 30. The second gas path module 60, the compression mechanism 30 and the oxygen storage mechanism 70 jointly define an installation space. The cooling fan 80 is located in the installation space. In this way, the internal structure layout of the portable oxygen concentrator is reasonable and the overall structure layout is more compact.

[0058] As shown in Figures 1 to 3, in some embodiments, a silent cover 31 is provided in the shell 10, and the compression mechanism 30 is provided in the silent cover 31. The outer wall of the silent cover 31 is provided with a first mounting position, a second mounting position, a third mounting position and a fourth mounting position. The first mounting position and the second mounting position are provided on the outer wall of the silent cover 31 on the side close to the oxygen production mechanism 50, the third mounting position is provided on the outer wall of the silent cover 31 on the side away from the oxygen production mechanism 50, and the fourth mounting position is provided at the top of the silent cover 31. The first mounting position is fixed with the first air path module 40, the second mounting position is fixed with the second air path module 60, the third mounting position is fixed with the filter mechanism 20, and the fourth mounting position is fixed with the cooling fan 80.

[0059] In detail, a silent cover 31 is provided in the housing 10, and the compression mechanism 30 is provided in the silent cover 31. In this way, the silent cover 31 can muffle the noise generated by the operation of the compression mechanism 30, thereby ensuring that the user can be in a relatively comfortable and quiet recuperation environment. The filter mechanism 20 is fixed to the third installation position. Specifically, the filter seat 21 is detachably connected to the silent cover 31. The first air path module 40 and the second air path module 60 are located on the side of the silent cover 31 close to the oxygen production mechanism 50, which can shorten the connection path between the first air path module 40 and the second air path module 60 and the oxygen production mechanism 50, thereby shortening the length of the connecting pipeline and reducing the volume occupied by the mechanism.

[0060] As shown in Figures 1 to 3, in some embodiments, the portable oxygen concentrator also includes a main control board 90, the compression mechanism 30, the first gas circuit module 40 and the second gas circuit module 60 are all electrically connected to the main control board 90, and a plurality of support columns 311 are provided on the front outer wall of the silent cover 31, and the plurality of support columns 311 are mechanically connected to the main control board 90.

[0061] In detail, the main control board 90 is arranged on the side of the silent cover 31, which can reasonably utilize the space for layout, and at the same time shorten the distance between the main control board 90 and various control components, shorten the wiring, and make the overall structure of the portable oxygen concentrator more compact.

[0062] As shown in Figures 1 and 2, in a specific embodiment, the portable oxygen concentrator also includes a display circuit board 94 and a key film 95. The display circuit board 94 is arranged in the shell 10 and is located above the second gas path diversion module 63 and the oxygen storage mechanism 70. The key film 95 is located outside the shell 10. The key film 95 is electrically connected to the display circuit board 94, and the display circuit board is electrically connected to the main control board 90.

[0063] As shown in Figures 2, 9, and 10, in some embodiments, the housing 10 includes a base 13 and a support base 14 that are interlocked. The base 13 defines a power cavity, which contains a power module 91. The base 13 is provided with a first conductive plate 92 electrically connected to the power module 91, and the support base 14 is provided with a second conductive plate 93. The main control board 90, the second conductive plate 93, and the first conductive plate 92 are sequentially in contact and electrically conductive. In this arrangement, the first conductive plate 92 and the second conductive plate 93 can be used to connect the main control board 90 and the power module 91.

[0064] In a specific embodiment, a first wiring port is provided on the first conductive plate 92, a second wiring port and a third wiring port are provided on the second conductive plate 93, and a fourth wiring port is provided on the main control board 90. The first wiring port and the second wiring port are plugged in, and the third wiring port and the fourth wiring port are plugged in. This arrangement can reduce the difficulty of line connection, avoid wiring, and facilitate disassembly, maintenance, and updating of parts.

[0065] As shown in Figures 2 and 6, in some embodiments, a bracket 15 is provided on the support seat 14, and the oxygen production mechanism 50 is respectively clamped with the support seat 14 and the bracket 15. A rotatable handle 51 is provided at the bottom of the oxygen production mechanism 50, and a receiving groove is also provided at the bottom of the oxygen production mechanism 50. The handle 51 can be rotated to a position embedded in the receiving groove and a position outside the receiving groove.

[0066] In detail, a bracket 15 is provided on the support base 14, and the oxygen-generating mechanism 50 is respectively engaged with the support base 14 and the bracket 15. A rotatable handle 51 is provided at the bottom of the oxygen-generating mechanism 50. When the various components in the portable oxygen concentrator are assembled in place, the handle 51 is rotated to a position embedded in the receiving groove. When the portable oxygen concentrator needs to be disassembled for repair and replacement of accessories, after the support base 14 and the oxygen-generating mechanism 50 are disassembled, the handle 51 is rotated to a position outside the receiving groove. With the handle 51 as the fulcrum, the user can grasp the handle 51 to pull the oxygen-generating mechanism 50 out of the bracket 15, thereby facilitating the removal of the oxygen-generating mechanism 50.

[0067] As shown in Figures 3-5, in some embodiments, the first gas path module 40 also includes a guide pipe 45, which includes a second guide port 452, a third guide port and a first inlet 41. The first inlet 41 is connected to the inlet of the compression mechanism 30. The guide pipe 45 can control the connection between the first inlet 41 and the second guide port 452 and the connection between the second guide port 452 and the first outlet 42. The first gas path module 40 is provided with a locking assembly 46 and at least two movable pipes 47. The two ends of the movable pipe 47 are respectively sealed with the first port 511 of the molecular sieve unit and the guide pipe 45, and the movable pipe 47 can move in the axial direction. The locking assembly 46 is transmission-connected to the movable pipe 47. The locking assembly 46 has a locking position and an unlocking position. When the locking assembly 46 is in the locking position, the movable pipe 47 is clamped or plugged with the first port 511 of the molecular sieve unit. When the locking assembly 46 is in the unlocking position, the movable pipe 47 is separated from the first port 511 of the molecular sieve unit.

[0068] Among them, the first air circuit module 40 is provided with a locking assembly 46 and at least two movable pipelines 47, wherein the number of locking assemblies 46 is not limited here, that is, one locking assembly 46 corresponds to at least two movable pipelines 47, or the locking assembly 46 and the movable pipelines 47 correspond one to one.

[0069] In addition, the flow conduit 45 can control the connection between the first inlet 41 and the second flow conduit 452, as well as the connection between the second flow conduit 452 and the first outlet 42. That is, the flow conduit 45 can control the connection between the first inlet 41 and the second flow conduit 452, or the connection between the second flow conduit 452 and the first outlet 42, at the same time. When exhaust gas enters the second flow conduit 452 through the movable conduit 47, the second flow conduit 452 is connected to the first outlet 42 to discharge the exhaust gas. When the movable conduit 47 provides compressed air to the molecular sieve unit, the first inlet 41 is connected to the second flow conduit 452, and the compressed air enters the molecular sieve unit via the first inlet 41, the second flow conduit 452, the movable conduit 47, and the first port 511.

[0070] As shown in FIG3-FIG5 , in a specific embodiment, multiple movable pipelines 47 are fixed on the trachea fixing plate 48 , and the locking assembly 46 is connected to the trachea fixing plate 48 to achieve the movement of multiple movable pipelines 47 driven by one locking assembly 46 .

[0071] In some specific embodiments, the locking assembly 46 is configured as a screw assembly or a connecting rod assembly to achieve the movement of the trachea fixing plate 48.

[0072] In detail, when the oxygen production mechanism 50 needs to be disassembled to replace the oxygen production adsorbent 52 or the first adsorbent filter 55 or the second adsorbent filter therein, it is only necessary to control the locking component 46 to be in the unlocked position to move the movable pipeline 47 to be separated from the first port 511 of the molecular sieve unit. After the oxygen production mechanism 50 is updated, the oxygen production mechanism 50 is installed in place. It is only necessary to control the locking component 46 to be in the locked position to move the movable pipeline 47 to be clamped or plugged into the first port 511 of the molecular sieve unit, which simplifies the pipeline setting connecting the molecular sieve unit and the compression mechanism 30 and reduces the difficulty of disassembling and assembling the pipeline.

[0073] As shown in Figures 3-5, in some embodiments, the first outlet 42 is located in the silent cover 31. The second guide port 452 is connected to the first outlet 42 to discharge the exhaust gas into the silent cover 31, thereby reducing the exhaust volume and achieving a silencing effect.

[0074] As shown in Figures 3 to 5, in some embodiments, a silencer 454 is provided in the guide pipe 45, and the silencer 454 is located at the first outlet 42. In this way, the silencer 454 can further silence the exhaust gas discharge and provide the user with a more comfortable and quiet recuperation environment.

[0075] It should be understood that the terms used herein are for the purpose of describing specific example embodiments only and are not intended to be limiting. Unless the context clearly indicates otherwise, the singular forms "one", "an", and "" as used herein may also be meant to include plural forms. The terms "comprise", "include", "contain", and "have" are inclusive and therefore specify the presence of the stated features, steps, operations, elements, and / or parts, but do not exclude the presence or addition of one or more other features, steps, operations, elements, parts, and / or combinations thereof. The method steps, processes, and operations described herein are not to be construed as necessarily requiring them to be performed in the specific order described or illustrated, unless the order of execution is clearly indicated. It should also be understood that additional or alternative steps may be used.

[0076] Although the terms first, second, third, etc. can be used in the text to describe multiple elements, components, regions, layers and / or sections, these elements, components, regions, layers and / or sections should not be limited by these terms. These terms can only be used to distinguish an element, component, region, layer or section from another region, layer or section. Unless the context clearly indicates otherwise, terms such as "first", "second" and other numerical terms do not imply order or sequence when used in the text. Therefore, the first element, component, region, layer or section discussed below can be referred to as the second element, component, region, layer or section without departing from the teaching of the example embodiments.

[0077] The above are merely specific embodiments of the present invention, intended to enable those skilled in the art to understand and implement the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not limited to the embodiments shown herein, but is intended to conform to the broadest scope consistent with the principles and novel features claimed herein.

Claims

1. A portable oxygen generator, characterized in that, The invention comprises a shell, wherein an air inlet and an oxygen outlet are defined on the shell, and a plurality of filter mechanisms, a compression mechanism, a first gas path module, an oxygen production mechanism, a second gas path module and an oxygen storage mechanism which are connected in sequence are arranged in the shell, wherein the filter mechanism is connected with the air inlet, and the oxygen outlet is connected with the outlet of the oxygen storage structure, and the oxygen production mechanism comprises at least two molecular sieve units, and the molecular sieve unit comprises a first port and a second port, and the first gas path module comprises a first inlet, a first outlet and at least two first connecting ports, wherein the first inlet is connected with the outlet of the compression mechanism, and the first connecting port is connected with the first port of the molecular sieve unit, and the first gas path module can control the first inlet to be connected with one of the first connecting ports and the other first connecting port to be connected with the first outlet, The second gas circuit module includes a second outlet and at least two second connecting ports, the second outlet is connected to the inlet of the oxygen storage mechanism, the second connecting port is connected to the second port of the molecular sieve unit, and the second gas circuit module can control the second outlet to be connected to one of the second connecting ports and two of the second connecting ports.

2. The portable oxygen generator according to claim 1, wherein The oxygen production mechanism is arranged side by side with the compression mechanism, the oxygen storage mechanism is arranged above the compression mechanism, the first port and the second port are respectively arranged at two ends of the height direction of the molecular sieve unit, and the second gas path module is arranged above the first gas path module.

3. The portable oxygen generator according to claim 2, wherein It also includes a heat dissipation fan. The oxygen storage mechanism is arranged above the compression mechanism. The second air path module, the compression mechanism and the oxygen storage mechanism jointly define an installation space. The heat dissipation fan is located in the installation space.

4. The portable oxygen generator according to claim 3, wherein A silent cover is provided in the shell, the compression mechanism is provided in the silent cover, a first mounting position, a second mounting position, a third mounting position and a fourth mounting position are provided on the outer wall of the silent cover, the first mounting position and the second mounting position are provided on the outer wall of the silent cover on the side close to the oxygen-generating mechanism, the third mounting position is provided on the outer wall of the silent cover on the side away from the oxygen-generating mechanism, the fourth mounting position is provided at the top of the silent cover, the first mounting position is fixed with the first air path module, the second mounting position is fixed with the second air path module, the third mounting position is fixed with the filtering mechanism, and the fourth mounting position is fixed with the cooling fan.

5. The portable oxygen generator according to claim 4, wherein, It also includes a main control board, and the compression mechanism, the first air path module and the second air path module are all electrically connected to the main control board. A plurality of support columns are provided on the front outer wall of the silent cover, and the plurality of support columns are mechanically connected to the main control board.

6. The portable oxygen generator according to claim 5, characterized in that, The shell includes a base and a support seat that are clamped together. A power cavity is defined in the base. A power module is provided in the power cavity. A first conductive plate electrically connected to the power module is provided on the base. A second conductive plate is provided on the support seat. The main control board, the second conductive plate and the first conductive plate are in contact with each other and electrically conductive in sequence.

7. The portable oxygen generator according to claim 6, characterized in that, A bracket is provided on the support seat, and the oxygen-generating mechanism is respectively clamped with the support seat and the bracket. A rotatable handle is provided at the bottom of the oxygen-generating mechanism, and a receiving groove is also provided at the bottom of the oxygen-generating mechanism. The handle can be rotated to a position embedded in the receiving groove and a position located outside the receiving groove.

8. The portable oxygen generator according to claim 7, characterized in that, The first gas path module also includes a guide pipeline, which includes a second guide port, a third guide port and the first inlet, the first inlet is connected to the inlet of the compression mechanism, and the guide pipeline can control the connection between the first inlet and the second guide port and the connection between the second guide port and the first outlet. The first gas path module is provided with a locking assembly and at least two movable pipelines, the two ends of the movable pipeline are respectively sealed and connected to the first port of the molecular sieve unit and the guide pipeline, and the movable pipeline can move in the axial direction, the locking assembly is transmission-connected to the movable pipeline, the locking assembly has a locking position and an unlocking position, when the locking assembly is in the locking position, the movable pipeline is clamped or plugged with the first port of the molecular sieve unit, and when the locking assembly is in the unlocking position, the movable pipeline is separated from the first port of the molecular sieve unit.

9. The portable oxygen generator according to claim 8, characterized in that, The first outlet is located in the soundproof cover.

10. The portable oxygen generator according to claim 9, wherein, A silencer is provided in the flow guiding pipeline, and the silencer is located at the first outlet.

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