Integrated air passage of oxygen generator, noise reduction shell and oxygen generator

Abstract

The invention provides an oxygen generator integrated air channel, a noise reduction shell and an oxygen generator, the oxygen generator integrated air channel comprises a base body and a plurality of independent air channels arranged on the base body, the plurality of air channels comprise at least two of an air supply air channel, a first distribution air channel, a second distribution air channel and a nitrogen exhaust air channel, the air supply air path comprises a first air inlet communicated with a compressor of the oxygenerator and an air outlet communicated with a distribution valve of the oxygenerator, and the first distribution air path comprises a first overflowing opening communicated with the distribution valve and a second overflowing opening communicated with a first molecular sieve tank of the oxygenerator; the second distribution gas path comprises a third overflowing opening communicated with the distribution valve and a fourth overflowing opening communicated with a second molecular sieve tank of the oxygen generator; and the nitrogen discharging path comprises a nitrogen inlet communicated with the distribution valve and a first nitrogen outlet. By applying the technical scheme provided by the invention, the problem of high failure rate of the oxygen generator in the prior art can be effectively solved.

Description

Technical Field

[0001] This invention relates to the field of medical devices, and more specifically, to an integrated airway, a noise-reducing shell, and an oxygen concentrator. 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 joint, becoming another factor causing product failure. Summary of the Invention

[0007] The main objective of this invention is to provide an integrated airway, a noise-reducing shell, and an oxygen generator for an oxygen concentrator, in order to solve the problem of high failure rate of oxygen concentrators in the prior art.

[0008] To achieve the above objectives, according to one aspect of the present invention, an integrated air passage for an oxygen concentrator is provided, comprising: a substrate and a plurality of independent air passages disposed on the substrate, the plurality of air passages including at least two of: a supply air passage, a first distribution air passage, a second distribution air passage, and a nitrogen exhaust air passage; the supply air passage includes a first air inlet connected to the compressor of the oxygen concentrator and an air outlet connected to the distribution valve of the oxygen concentrator; the first distribution air passage includes a first flow port connected to the distribution valve and a second flow port connected to a first molecular sieve tank of the oxygen concentrator; the second distribution air passage includes a third flow port connected to the distribution valve and a fourth flow port connected to a second molecular sieve tank of the oxygen concentrator; and the nitrogen exhaust air passage includes a nitrogen inlet connected to the distribution valve and a first nitrogen outlet.

[0009] In one embodiment, the air outlet, the first flow port, the third flow port, and the nitrogen inlet are located on the same side of the substrate.

[0010] In one embodiment, the air outlet, the first flow port, the third flow port, and the nitrogen inlet are integrated into the side or middle of one side of the substrate.

[0011] In one embodiment, the air outlet is located on a first side of the substrate, and the first air inlet and / or the first nitrogen outlet are located on a second side of the substrate opposite to the first side.

[0012] In one embodiment, the substrate includes a cover plate and a first extension tube and / or a second extension tube disposed on the cover plate and extending outward, wherein a passage in the first extension tube forms a first distribution gas passage and a passage in the second extension tube forms a second distribution gas passage.

[0013] In one embodiment, the first extension tube includes a first tube body and a first connector and a second connector disposed at both ends of the first tube body. The interface inside the first connector forms a first flow port and the first connector is located on a cover plate. The interface inside the second connector forms a second flow port and the second connector is located outside the cover plate. The second extension tube includes a second tube body and a third connector and a fourth connector disposed at both ends of the second tube body. The interface inside the third connector forms a third flow port and the third connector is located on a cover plate. The interface inside the fourth connector forms a fourth flow port and the fourth connector is located outside the cover plate.

[0014] In one embodiment, the substrate further includes an overlapping structure disposed on the cover plate and extending toward the second connector; and / or, the substrate further includes an overlapping structure disposed on the cover plate and extending toward the fourth connector.

[0015] In one embodiment, the substrate includes a cover plate and a fifth connector disposed on a first side of the cover plate. The cover plate is provided with a connecting hole communicating with the fifth connector. The fifth connector and the channel in the connecting hole form a nitrogen venting path. The interface in the fifth connector forms a nitrogen inlet, and the connecting hole forms a first nitrogen outlet.

[0016] In one embodiment, the substrate includes a cover plate and a third extension tube passing through the cover plate, the passage within the third extension tube forming an air supply passage.

[0017] In one embodiment, the third extension tube includes a sixth connector and a seventh connector respectively disposed on a first side and a second side of the cover plate, and a connecting tube connecting the sixth connector and the seventh connector, wherein the interface in the sixth connector forms an air outlet and the interface in the seventh connector forms a first air inlet.

[0018] In one embodiment, the substrate includes a substrate body and a limiting structure disposed on one side of the substrate body, and the air passage is disposed on the substrate body.

[0019] In one implementation, the substrate is a monolithic structure.

[0020] According to another aspect of the present invention, a noise reduction housing is provided, comprising: a housing body having an installation opening; and an integrated airway cover covering the installation opening, wherein the integrated airway cover is the integrated airway of the oxygen concentrator described above.

[0021] According to another aspect of the present invention, a noise reduction shell is provided, comprising: a shell body having an installation opening; an integrated airway cover covering the installation opening, wherein the integrated airway cover is the integrated airway of the aforementioned oxygen generator, and the limiting structure of the integrated airway cover is in limiting cooperation with the opening wall of the installation opening.

[0022] According to a final aspect of the present invention, an oxygen generator is provided, comprising: a noise-reducing housing, wherein the noise-reducing housing is as described above; a compressor disposed within the housing body of the noise-reducing housing, wherein the air outlet of the compressor is connected to a first air inlet of the air supply passage of the integrated air duct cover of the noise-reducing housing; a gas distribution valve, comprising a second air inlet, a first distribution port, a second distribution port, and a second nitrogen outlet, wherein the second air inlet is connected to the air outlet of the air supply passage, the first distribution port is connected to a first flow port of the first distribution passage of the integrated air duct cover, the second distribution port is connected to a third flow port of the second distribution passage of the integrated air duct cover, and the second nitrogen outlet is connected to the nitrogen inlet of the nitrogen discharge passage of the integrated air duct cover; a first molecular sieve tank connected to a second flow port of the first distribution passage; and a second molecular sieve tank connected to a fourth flow port of the second distribution passage.

[0023] In one embodiment, the gas distribution valve is fixedly connected to the integrated airway cover, and the oxygen generator further includes an oxygen distribution valve, including a third distribution port communicating with the first molecular sieve tank and a fourth distribution port communicating with the second molecular sieve tank. The oxygen distribution valve and the gas distribution valve are press-fitted to press the integrated airway cover onto the housing body.

[0024] Applying the technical solution of this invention, the air discharged from the compressor can be distributed to the first molecular sieve tank or the second molecular sieve tank after passing through the integrated air duct to achieve the purpose of oxygen production; the nitrogen discharged from the first molecular sieve tank or the second molecular sieve tank can be discharged through the integrated air duct via the nitrogen discharge path to achieve the purpose of nitrogen discharge to a predetermined location. In the above structure, by replacing multiple long gas pipe paths with an integrated air duct, on the one hand, gas 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.

[0025] 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

[0026] 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:

[0027] 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;

[0028] Figure 2 It shows Figure 1 A cross-sectional schematic diagram of the integrated airway;

[0029] Figure 3 It shows Figure 1 A bottom view of the integrated airway;

[0030] Figure 4 It shows Figure 1 A longitudinal section schematic diagram of the integrated airway;

[0031] Figure 5 A longitudinal sectional schematic diagram of the noise reduction housing according to the present invention is shown;

[0032] Figure 6 It shows Figure 5 A perspective view of the body of the noise-reducing shell;

[0033] Figure 7 A longitudinal sectional schematic diagram of an oxygen generator according to the present invention is shown;

[0034] Figure 8 It shows Figure 7 A top view of an oxygen concentrator;

[0035] Figure 9 It shows Figure 7 A three-dimensional structural diagram of the oxygen distribution valve of an oxygen concentrator; and

[0036] Figure 10 It shows Figure 7 A three-dimensional structural diagram of the gas distribution valve of an oxygen generator.

[0037] The above figures include the following reference numerals:

[0038] 8b. Third distribution port; 9b. Fourth distribution port; 1c. Gas supply path; 2c. First air inlet; 3c. Air outlet; 1d. First distribution path; 2d. First overflow port; 3d. Second overflow port; 1e. Second distribution path; 2e. Third overflow port; 3e. Fourth overflow port; 1f. Nitrogen venting path; 2f. Nitrogen inlet; 3f. First nitrogen outlet; 20a. First molecular sieve tank; 20b. Second molecular sieve tank; 150. Oxygen distribution valve; 190. Matrix; 191. Cover plate; 192. First extension pipe; 1921. First pipe body; 1922. First connector; 1923. 193. Second connector; 194. Second extension tube; 195. Second tube body; 196. Third connector; 197. Fourth connector; 198. Overlap structure; 199. Fifth connector; 190. Third extension tube; 191. Sixth connector; 192. Seventh connector; 1963. Connecting tube; 1994. Limiting structure; 200. Shell body; 201. Mounting opening; 210. Integrated air passage cover; 220. Noise reduction shell; 230. Compressor; 240. Gas distribution valve; 241. Second air inlet; 242. First distribution port; 243. Second distribution port; 244. Second nitrogen outlet. Detailed Implementation

[0039] 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.

[0040] 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.

[0041] 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.

[0042] 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.

[0043] like Figures 1 to 4 , Figure 7 and Figure 10 As 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 first flow port 2d connected to the distribution valve and a second flow port 3d connected to the first molecular sieve tank of the oxygen concentrator. The second distribution passage 1e includes a third flow port 2e connected to the distribution valve and a fourth flow port 3e connected to the second molecular sieve tank 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.

[0044] Applying the technical solution of this embodiment, the air discharged from the compressor can be distributed to the first molecular sieve tank or the second molecular sieve tank after passing through the integrated air duct to achieve the purpose of oxygen production; the nitrogen discharged from the first molecular sieve tank or the second molecular sieve tank 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.

[0045] The oxygen generator uses its first and second molecular sieve tanks to alternately generate oxygen and release nitrogen. The gas flow path during oxygen generation and nitrogen release is described in detail below:

[0046] When the first molecular sieve tank produces 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 first overflow port 2d. The air in the first distribution path 1d then enters the first molecular sieve tank through the second overflow port 3d to achieve the purpose of oxygen production in the first molecular sieve tank. At the same time, the second molecular sieve tank begins to discharge nitrogen. The nitrogen enters the second distribution path 1e through the fourth overflow port 3e, and then enters the distribution valve through the third 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.

[0047] When the second molecular sieve tank produces 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 through the third overflow port 2e into the second distribution path 1e. The air in the second distribution path 1e then enters the second molecular sieve tank through the fourth overflow port 3e to achieve the purpose of oxygen production in the second molecular sieve tank. At the same time, the first molecular sieve tank begins to discharge nitrogen. The nitrogen enters the first distribution path 1d through the second overflow port 3d, and then enters the distribution valve through the first 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.

[0048] 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.

[0049] like Figure 1 As shown, in this embodiment, the air outlet 3c, the first flow port 2d, the third flow port 2e, and the nitrogen inlet 2f are located on the same side of the base 190. Specifically, the air outlet 3c, the first flow port 2d, the third 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.

[0050] like Figure 1 and Figure 2As shown, in this embodiment, the air outlet 3c, the first flow port 2d, the third 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 first flow port 2d, the third 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 first flow port 2d, the third flow port 2e, and the nitrogen inlet 2f can also be integrated in the middle of the base 190.

[0051] like Figures 1 to 3 As 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.

[0052] like Figures 1 to 3 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 sieve tanks 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.

[0053] like Figures 1 to 3As 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 first flow port 2d, and the first connector 1922 is located on the cover plate 191. The interface inside the second connector 1923 forms a second 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 tank. 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.

[0054] like Figures 1 to 3 As 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 third flow port 2e, and the third connector 1932 is located on the cover plate 191. The interface inside the fourth connector 1933 forms a fourth flow port 3e, and the fourth connector 1933 is located outside the cover plate 191. The above structure is simple and easy to connect with the distribution valve and the molecular sieve tank. 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.

[0055] 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 1 to 4As 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 tank's piping 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 tank's piping structure, so that a portion of the piping overlaps the overlapping structure 194. If the gas pressure is high, causing the molecular sieve tank's piping to tend to detach from the second connector 1923 and the fourth connector 1933, the overlapping structure 194 can prevent the molecular sieve tank's piping from slipping, thereby ensuring that the molecular sieve tank's piping 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.

[0056] like Figure 1 and Figure 4 As 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.

[0057] like Figure 1 and Figure 2 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.

[0058] like Figure 1 and Figure 2As 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.

[0059] 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.

[0060] like Figure 1 and Figure 3 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.

[0061] like Figure 5 and Figure 6 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.

[0062] like Figure 5 and Figure 6 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.

[0063] like Figures 7 to 10 As 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 tank 20a, and a second molecular sieve tank 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 third 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 first 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 tank 20a is connected to the second flow port 3d of the first distribution path 1d. The second molecular sieve tank 20b is connected to the fourth 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.

[0064] like Figures 7 to 9 As shown, in this embodiment, the gas distribution valve 240 is fixedly connected to the integrated airway cover 210. The oxygen generator also includes an oxygen distribution valve 150, which includes a third distribution port 8b communicating with the first molecular sieve tank 20a and a fourth distribution port 9b communicating with the second molecular sieve tank 20b. The oxygen distribution valve 150 and the gas distribution valve 240 are press-fitted to press the integrated airway cover 210 onto the housing body 200. In the above structure, as long as the oxygen distribution valve 150 and the gas distribution valve 240 are assembled, the displacement of the integrated airway cover 210 in the normal direction can be restricted, thereby reducing the assembly process.

[0065] 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.

[0066] 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.

[0067] 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.

[0068] 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 airway for an oxygen concentrator, characterized in that, include: The substrate (190) and a plurality of independent gas passages disposed on the substrate (190), the plurality of gas passages including at least two of the following: a supply gas passage (1c), a first distribution gas passage (1d), a second distribution gas passage (1e), and a nitrogen exhaust gas passage (1f). The supply gas passage (1c) includes a first air inlet (2c) connected to the compressor of the oxygen generator and an air outlet (3c) connected to the distribution valve of the oxygen generator. The first distribution gas passage (1d) includes a first flow port (2d) connected to the distribution valve and a second flow port (3d) connected to the first molecular sieve tank of the oxygen generator. The second distribution gas passage (1e) includes a third flow port (2e) connected to the distribution valve and a fourth flow port (3e) connected to the second molecular sieve tank of the oxygen generator. The nitrogen exhaust gas passage (1f) includes a nitrogen inlet (2f) connected to the distribution valve and a first nitrogen outlet (3f).

2. The integrated airway of the oxygen concentrator according to claim 1, characterized in that, The air outlet (3c), the first flow port (2d), the third flow port (2e), and the nitrogen inlet (2f) are located on the same side of the substrate (190).

3. The integrated airway of the oxygen concentrator according to claim 2, characterized in that, The air outlet (3c), the first flow port (2d), the third flow port (2e), and the nitrogen inlet (2f) are integrated on the side or center of the substrate (190).

4. The integrated airway of the oxygen concentrator according to claim 2, characterized in that, The air outlet (3c) is located on the first side of the substrate (190), and the first air inlet (2c) and / or the first nitrogen outlet (3f) are located on the second side of the substrate (190) opposite to the first side.

5. The integrated airway of the oxygen concentrator according to claim 1, characterized in that, The substrate (190) includes a cover plate (191) and a first extension tube (192) and / or a second extension tube (193) disposed on the cover plate (191) and extending outward, wherein the passage in the first extension tube (192) forms the first distribution air passage (1d) and the passage in the second extension tube (193) forms the second distribution air passage (1e).

6. The integrated airway of the oxygen concentrator according to claim 5, characterized in that, 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 the first flow port (2d) and the first connector (1922) is located on the cover plate (191). The interface inside the second connector (1923) forms the second flow port (3d) and the second connector (1923) is located outside the cover plate (191). 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 in the third connector (1932) forms the third flow port (2e), and the third connector (1932) is located on the cover plate (191). The interface in the fourth connector (1933) forms the fourth flow port (3e), and the fourth connector (1933) is located outside the cover plate (191).

7. The integrated airway of the oxygen concentrator according to claim 6, characterized in that, The substrate (190) further includes an overlapping structure (194) disposed on the cover plate (191) and extending toward the second connector (1923); and / or, the substrate (190) further includes an overlapping structure (194) disposed on the cover plate (191) and extending toward the fourth connector (1933).

8. The integrated airway of the oxygen concentrator according to claim 1, characterized in that, The substrate (190) includes a cover plate (191) and a fifth connector (195) disposed on a first side of the cover plate (191). The cover plate (191) is provided with a communication hole communicating with the fifth connector (195). The fifth connector (195) and the channel in the communication hole form the nitrogen exhaust path (1f). The interface in the fifth connector (195) forms the nitrogen inlet (2f). The communication hole forms the first nitrogen outlet (3f).

9. The integrated airway of the oxygen concentrator according to claim 1, characterized in that, The substrate (190) includes a cover plate (191) and a third extension tube (196) passing through the cover plate (191), the passage in the third extension tube (196) forming the air supply passage (1c).

10. The integrated airway of the oxygen concentrator according to claim 9, characterized in that, The third extension tube (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 tube (1963) connecting the sixth connector (1961) and the seventh connector (1962). The interface in the sixth connector (1961) forms the air outlet (3c), and the interface in the seventh connector (1962) forms the first air inlet (2c).

11. The integrated airway of the oxygen concentrator according to claim 1, characterized in that, 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.

12. The integrated airway of the oxygen concentrator according to any one of claims 1 to 11, characterized in that, The substrate (190) is a single-piece structure.

13. A noise-reducing shell, characterized in that, include: The shell body (200) has a mounting opening (201); An integrated airway cover (210) is provided on the mounting opening (201), and the integrated airway cover (210) is the integrated airway of the oxygen generator according to any one of claims 1 to 12.

14. A noise-reducing shell, characterized in that, include: The shell body (200) has a mounting opening (201); An integrated airway cover (210) is provided on the mounting opening (201). The integrated airway cover (210) is the integrated airway of the oxygen generator according to claim 11. The limiting structure (198) of the integrated airway cover (210) is limited and matched with the opening wall of the mounting opening (201).

15. An oxygen generator, characterized in that, include: Noise-reducing shell (220), wherein the noise-reducing shell (220) is the noise-reducing shell as described in claim 13; The compressor (230) is disposed inside the shell body (200) of the noise reduction shell (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 reduction shell (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 passage (1c). The first distribution port (242) is connected to the first overflow port (2d) of the first distribution passage (1d) of the integrated gas duct cover (210). The second distribution port (243) is connected to the third overflow port (2e) of the second distribution passage (1e) of the integrated gas duct cover (210). The second nitrogen outlet (244) is connected to the nitrogen inlet (2f) of the nitrogen discharge passage (1f) of the integrated gas duct cover (210). The first molecular sieve tank (20a) is connected to the second outlet (3d) of the first distribution gas path (1d); The second molecular sieve tank (20b) is connected to the fourth outlet (3e) of the second distribution gas path (1e).

16. The oxygen generator according to claim 15, characterized in that, The gas distribution valve (240) is fixedly connected to the integrated airway cover (210), and the oxygen generator further includes: The oxygen distribution valve (150) includes a third distribution port (8b) communicating with the first molecular sieve tank (20a) and a fourth distribution port (9b) communicating with the second molecular sieve tank (20b). The oxygen distribution valve (150) is press-fitted with the gas distribution valve (240) to press the integrated gas passage cover (210) onto the housing body (200).

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