Portable oxygen generator

Abstract

The utility model relates to a portable oxygenerator, which comprises a base, an oxygen generation assembly, an oxygen output pulse assembly and an oxygen concentration sensor, an oxygen generation airway, an oxygen output airway and an oxygen supply airway which are communicated in sequence are formed in the base, and the tail end of the oxygen supply airway is connected with an oxygen output nozzle. Oxygen can be discharged from the oxygen outlet nozzle through communicating air channels in the oxygen generation air channel, the oxygen outlet air channel and the oxygen supply air channel in sequence; the oxygen generation airway comprises an oxygen generation chamber and an oxygen storage chamber, the oxygen generation assembly is connected to an air inlet of the oxygen generation chamber, and the oxygen generation chamber is communicated with the oxygen outlet airway and is communicated with the oxygen storage chamber through a gas tank throttle valve; the oxygen outlet pulse assembly is arranged in the oxygen outlet channel, and the oxygen concentration sensor is arranged between the oxygen outlet channel and the oxygen feeding channel. According to the portable oxygen generator provided by the invention, the oxygen generation airway, the oxygen outlet airway and the oxygen supply airway are integrated, so that the size of the portable oxygen generator can be reduced, and oxygen leakage is effectively prevented.

Description

Technical Field

[0001] This utility model relates to the field of oxygen generator technology, and in particular to a portable oxygen generator. Background Technology

[0002] With advancements in medical technology and increasing health demands, portable oxygen concentrators are finding wider application in home healthcare, outdoor activities, and high-altitude travel. Traditional oxygen concentrators are typically large and complex, with insufficient oxygen output stability, failing to meet users' needs for portability and efficient oxygen supply. Most existing portable oxygen concentrators employ a design where oxygen generation, output, and delivery are relatively independent. This separate structure has several technical drawbacks. For example, because the oxygen generation, storage, and delivery gas paths are independent, additional connecting pipes and buffer chambers are required between modules, leading to redundant equipment structure, hindering miniaturization and weight reduction, and decreasing portability. The independent gas path design requires oxygen to undergo multiple diversions and reversals during transmission, increasing airflow resistance, causing oxygen pressure loss, affecting the adsorption and desorption efficiency of the oxygen generation components, and thus reducing the overall oxygen generation rate. Furthermore, due to the separate gas paths, the lack of real-time monitoring and feedback adjustment mechanisms during oxygen delivery results in significant fluctuations in output oxygen concentration, making it difficult to maintain medical-grade standards and impacting treatment effectiveness. Therefore, there is an urgent need for a highly integrated and easy-to-maintain portable oxygen concentrator. Utility Model Content

[0003] Based on this, this application provides a portable oxygen concentrator with an integrated structure design that combines the oxygen generation channel, oxygen outlet channel, and oxygen delivery channel into one unit, which can reduce the size of the portable oxygen concentrator and effectively prevent oxygen leakage.

[0004] A portable oxygen concentrator includes a base, an oxygen generation component, an oxygen pulse component, and an oxygen concentration sensor. The base forms an oxygen generation channel, an oxygen output channel, and an oxygen delivery channel that are connected in sequence. The end of the oxygen delivery channel is connected to an oxygen outlet. Oxygen can pass through the connecting air passages in the oxygen generation channel, the oxygen output channel, and the oxygen delivery channel in sequence and be discharged from the oxygen outlet.

[0005] The oxygen generating channel includes an oxygen generating chamber and an oxygen storage chamber. The oxygen generating component is connected to the air inlet of the oxygen generating chamber. The oxygen generating chamber is connected to the oxygen outlet channel and is also connected to the oxygen storage chamber through a gas cylinder throttle valve. The oxygen outlet pulse component is located in the oxygen outlet channel, and the oxygen concentration sensor is located between the oxygen outlet channel and the oxygen delivery channel.

[0006] The portable oxygen concentrator described above uses a series of interconnected gas passages—one for oxygen generation, one for oxygen dispensing, and one for oxygen delivery—to discharge oxygen from the outlet. The oxygen flow path within the device is clearly defined: oxygen is first generated through the oxygen generation passage, then its flow is regulated through the oxygen dispensing passage, and finally, it is stably output through the oxygen delivery passage. An oxygen concentration sensor positioned between the oxygen dispensing and delivery passages monitors the oxygen concentration in real time. This integrated design of the oxygen generation, dispensing, and delivery passages reduces the size of the portable oxygen concentrator, minimizes external piping connections in the oxygen generation process, and effectively prevents oxygen leakage.

[0007] In one embodiment, the oxygen supply channel includes a pulse valve inlet chamber and a pulse valve outlet chamber. The oxygen supply chamber is connected to the pulse valve inlet chamber via a pipe, and the pulse valve inlet chamber is connected to the pulse valve outlet chamber via the oxygen supply pulse assembly.

[0008] In one embodiment, the pulse valve outlet chamber is connected to one end of the oxygen concentration sensor via a throttle valve, and the other end of the oxygen concentration sensor is connected to the oxygen supply channel.

[0009] In one embodiment, the oxygen supply channel has a pump port for connecting to the oxygen concentration sensor. The oxygen supply channel is provided with an anti-backflow check valve bracket, a reset member, and a sealing member. The reset member is connected between the anti-backflow check valve bracket and the sealing member. The reset member applies pressure to the sealing member to drive the sealing member to detachably block the pump port.

[0010] In one embodiment, the reset member includes a telescopic spring, the sealing member includes a silicone cap, one end of the telescopic spring is connected to the anti-backflow check valve bracket, and the other end is connected to the silicone cap, the diameter of the silicone cap being larger than the diameter of the pump port.

[0011] In one embodiment, the oxygen supply channel is connected to the oxygen outlet via an oxygen supply pipe, and the oxygen supply pipe is equipped with a filter.

[0012] In one embodiment, a cylinder head is also included. The base is integrally formed, and the oxygen generating passage, the oxygen outlet passage, and the oxygen delivery passage are exposed on the same side of the base. The oxygen generating passage, the oxygen outlet passage, and the oxygen delivery passage are separated by a partition. The cylinder head is fitted onto the base to seal the oxygen generating passage, the oxygen outlet passage, and the oxygen delivery passage.

[0013] In one embodiment, the oxygen pulse assembly and the oxygen concentration sensor are detachably mounted on the side of the base away from the cylinder head.

[0014] In one embodiment, the oxygen generating assembly includes a molecular sieve A tower and a molecular sieve B tower, both of which are connected to the oxygen generating chamber via a one-way valve.

[0015] In one embodiment, the base has a boss that surrounds and forms the oxygen generating chamber, and a portion of the oxygen storage chamber surrounds the boss. Attached Figure Description

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein:

[0017] Figure 1 This is a schematic diagram of the structure of a portable oxygen concentrator according to one embodiment;

[0018] Figure 2 This is a schematic diagram of a portion of the structure of a portable oxygen concentrator according to an embodiment.

[0019] Figure 3 This is a schematic diagram of a portion of the structure of a portable oxygen concentrator according to an embodiment.

[0020] Figure 4 This is a schematic diagram of the oxygen flow direction of a portable oxygen concentrator according to one embodiment;

[0021] Figure 5 An exploded view of a portion of the structure of a portable oxygen concentrator according to an embodiment;

[0022] Figure 6 This is a schematic diagram of a portion of the structure of a portable oxygen concentrator according to an embodiment.

[0023] Figure 7 This is a cross-sectional view of a portion of the structure of a portable oxygen concentrator according to an embodiment.

[0024] Reference numerals: Portable oxygen concentrator 10; Base 20; Oxygen supply channel 21; Oxygen supply chamber 211; Air inlet 2110; Molecular sieve A tower interface 2110a; Molecular sieve B tower interface 2110b; Oxygen storage chamber 212; Oxygen outlet channel 22; Pulse valve inlet chamber 221; Throttling valve 2210; Pulse valve outlet chamber 222; Oxygen delivery channel 23; Oxygen outlet nozzle 231; Pump port 232; Anti-backflow check valve bracket 233; Reset component 234; Telescopic spring 2340; Sealing component 235; Silicone cap 2351; Oxygen delivery pipeline 236; Filter 2361; Gas tank throttle valve 24; Boss 25; Oxygen pulse assembly 40; Oxygen concentration sensor 50; Cylinder head 60; Partition 70 Detailed Implementation

[0025] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0026] In the description of this utility model, "multiple" means two or more; "greater than," "less than," and "exceeding" are understood to exclude the stated number; "above," "below," and "within" are understood to include the stated number. The use of "first" and "second" in the description is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly specifying the number of indicated technical features or their sequential relationship.

[0027] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0028] In this utility model, unless otherwise explicitly defined, the terms "setting," "installing," and "connecting" should be interpreted broadly. For example, they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to a fixed connection, a detachable connection, or an integral molding; they can refer to a mechanical connection; they can refer to the internal connection of two components or the interaction between two components. Those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0029] With advancements in medical technology and increasing health demands, portable oxygen concentrators are finding wider application in home healthcare, outdoor activities, and high-altitude travel. Traditional oxygen concentrators are typically large and complex, with insufficient oxygen output stability, failing to meet users' needs for portability and efficient oxygen supply. Most existing portable oxygen concentrators employ a design where oxygen generation, output, and delivery are relatively independent. This separate structure has several technical drawbacks. For example, because the oxygen generation, storage, and delivery gas paths are independent, additional connecting pipes and buffer chambers are required between modules, leading to redundant equipment structure, hindering miniaturization and weight reduction, and reducing portability. The independent gas path design requires oxygen to undergo multiple diversions and reversals during transmission, increasing airflow resistance, causing oxygen pressure loss, affecting the adsorption and desorption efficiency of the oxygen generation components, and thus reducing the overall oxygen generation rate. Furthermore, due to the separate gas paths, the lack of real-time monitoring and feedback adjustment mechanisms during oxygen delivery results in significant fluctuations in output oxygen concentration, making it difficult to maintain medical-grade standards and impacting treatment effectiveness. Therefore, there is an urgent need for a highly integrated portable oxygen concentrator with precise gas path linkage and easy maintenance.

[0030] See Figures 1 to 7 To address the aforementioned problems, this application provides a portable oxygen concentrator 10. Figure 1 This is a schematic diagram of the structure of a portable oxygen concentrator 10 according to one embodiment; Figure 2 , Figure 3 , Figure 5 and Figure 6 This is a schematic diagram of a portion of the structure of a portable oxygen concentrator 10 according to an embodiment; Figure 4 A schematic diagram of the oxygen flow direction of a portable oxygen concentrator 10 according to an embodiment; Figure 7 This is a cross-sectional view of a portion of the structure of a portable oxygen concentrator 10 according to an embodiment. The portable oxygen concentrator 10 includes a base 20, an oxygen generating component, an oxygen pulse component 40, and an oxygen concentration sensor 50. The base 20 forms an oxygen generating channel 21, an oxygen discharging channel 22, and an oxygen delivery channel 23 connected in sequence. The end of the oxygen delivery channel 23 is connected to an oxygen outlet 231. Oxygen can pass through the connecting air passages in the oxygen generating channel 21, the oxygen discharging channel 22, and the oxygen delivery channel 23 in sequence and be discharged from the oxygen outlet 231. The oxygen generating channel 21 includes an oxygen generating chamber 211 and an oxygen storage chamber 212. The oxygen generating component is connected to the air inlet 2110 of the oxygen generating chamber 211. The oxygen generating chamber 211 is connected to the oxygen discharging channel 22 and is connected to the oxygen storage chamber 212 through a gas cylinder throttle valve 24. The oxygen pulse component 40 is disposed in the oxygen discharging channel 22, and the oxygen concentration sensor 50 is disposed between the oxygen discharging channel 22 and the oxygen delivery channel 23.

[0031] See Figures 1 to 7In the portable oxygen concentrator 10 provided in this application, the portable oxygen concentrator 10 includes a base 20, an oxygen generation component, an oxygen output pulse component 40, and an oxygen concentration sensor 50. The base 20 serves as the basic support structure of the device and integrates a complete set of continuous gas channel structures. The gas channel structure includes three functional gas paths connected in sequence: an oxygen generation channel 21, an oxygen output channel 22, and an oxygen delivery channel 23. The end of the oxygen delivery channel 23 is connected to an oxygen outlet 231, through which oxygen is provided to the user. Specifically, oxygen flows sequentially through the interconnected gas paths in the oxygen generation channel 21, the oxygen output channel 22, and the oxygen delivery channel 23 to be discharged from the oxygen outlet 231. The flow path of oxygen inside the device is clear and reasonable. First, oxygen is prepared through the oxygen generation channel 21, then the flow rate is regulated through the oxygen output channel 22, and finally, it is stably output through the oxygen delivery channel 23.

[0032] The oxygen generating channel 21 includes an oxygen generating chamber 211 and an oxygen storage chamber 212. The oxygen generating component is connected to the air inlet 2110 of the oxygen generating chamber 211 and is responsible for separating and extracting oxygen from the air. The oxygen generating chamber 211 is not only connected to the oxygen outlet channel 22, but also connected to the oxygen storage chamber 212 through a specially designed gas cylinder throttle valve 24. This dual connection structure design ensures both a continuous supply of oxygen and reasonable storage of oxygen. In the portable oxygen concentrator 10, oxygen is generated by the oxygen generating component and enters the oxygen generating channel 21, with most of the oxygen stored in the oxygen storage chamber 212.

[0033] In some embodiments, the oxygen generating component is connected to the air inlet 2110 of the oxygen generating chamber 211. The oxygen generating component can employ molecular sieve dual-tower pressure swing adsorption (PSA) technology. Specifically, the oxygen generating component includes a molecular sieve A tower and a molecular sieve B tower, which can alternately generate oxygen. Continuous and stable oxygen production is achieved through the alternating operation of molecular sieve A tower and molecular sieve B tower. When molecular sieve A tower is in the adsorption state, compressed air enters from the bottom of the tower. Nitrogen molecules in the air are selectively adsorbed by the molecular sieve, while oxygen passes smoothly to become the product gas, which then enters the oxygen generating chamber 211 through the air inlet 2110. Simultaneously, tower B tower is in the desorption and regeneration stage, rapidly depressurizing to release the adsorbed nitrogen, completing the regeneration preparation of the molecular sieve. In some implementations, a smart control system can precisely time the process, allowing the molecular sieve A tower and molecular sieve B tower to periodically alternate their operating states. Molecular sieve A tower transitions from adsorption to desorption, discharging nitrogen-rich waste gas, while molecular sieve B tower transitions from regeneration to adsorption, initiating oxygen production. This ensures continuous and uninterrupted oxygen output, providing users with a stable and continuous supply of medical-grade oxygen. In some implementations, both molecular sieve A tower and molecular sieve B tower are connected to the oxygen-generating chamber 211 via one-way valves, ensuring that oxygen flows unidirectionally from the oxygen-generating components into the oxygen-generating chamber 211 without backflow, thus guaranteeing a continuous and stable oxygen supply for users.

[0034] The oxygen generating chamber 211 is connected to the oxygen outlet duct 22, allowing oxygen to smoothly enter the outlet duct 22 from the oxygen generating chamber 21. The oxygen generating chamber 211 is connected to the oxygen storage chamber 212 via a gas cylinder throttle valve 24. The gas cylinder throttle valve 24 controls the oxygen flow rate, preventing oxygen from directly impacting the oxygen storage chamber 212 and maintaining the working gas pressure of the portable oxygen concentrator 10 within a safe and reasonable range, thus protecting the components of the portable oxygen concentrator 10. At the same time, the gas cylinder throttle valve 24 can also reasonably throttle and reduce unnecessary oxygen consumption.

[0035] An oxygen pulse assembly 40 is located in the oxygen outlet channel 22. This assembly controls the oxygen output rhythm and intelligently adjusts the oxygen output pulse according to the user's breathing rate, ensuring that oxygen delivery is synchronized with the user's breathing and significantly improving oxygen utilization. An oxygen concentration sensor 50 is located between the oxygen outlet channel 22 and the oxygen delivery channel 23, monitoring the concentration of the oxygen to be output in real time to ensure that every breath of oxygen received by the user meets medical standards. This integrated design of the oxygen generating channel 21, oxygen outlet channel 22, and oxygen delivery channel 23, with each functional component working collaboratively, reduces the size of the portable oxygen concentrator 10, minimizes external piping connections in the oxygen generation process, and effectively prevents oxygen leakage.

[0036] The oxygen supply channel 22 includes a pulse valve inlet chamber 221 and a pulse valve outlet chamber 222. The oxygen generating chamber 211 is connected to the pulse valve inlet chamber 221 via a pipe, allowing the prepared oxygen to enter the oxygen supply channel 22. The pulse valve inlet chamber 221 serves as an oxygen buffer storage space, smoothing airflow fluctuations and providing a stable gas source for subsequent pulsed oxygen supply. The oxygen pulse assembly 40 is connected between the pulse valve inlet chamber 221 and the pulse valve outlet chamber 222, with the pulse valve inlet chamber 221 connected to the pulse valve outlet chamber 222 via the oxygen pulse assembly 40. The oxygen pulse assembly 40 can intelligently adjust the timing and flow rate of oxygen delivery according to the user's breathing rate and oxygen demand. When the oxygen pulse assembly 40 is activated, oxygen passes orderly from the pulse valve inlet chamber 221 and enters the pulse valve outlet chamber 222 for output; during the interval, it remains closed, achieving precise throttling.

[0037] The pulse valve outlet chamber 222 is connected to one end of the oxygen concentration sensor 50 via a throttle valve 2210. The throttle valve 2210 converts the high-speed pulsed airflow into a stable and gentle detection airflow, ensuring the accuracy of the oxygen concentration sensor 50 while avoiding the impact of a large flow of air on the sensor, allowing the sensor to continuously monitor oxygen concentration under optimal operating conditions. The other end of the oxygen concentration sensor 50 is connected to the oxygen delivery channel 23, which can monitor the quality of the oxygen to be delivered to the user in real time, ensuring that the breathing is of standard medical-grade oxygen. The integration of the pulse valve outlet chamber 222, the throttle valve 2210, the oxygen concentration sensor, and the oxygen delivery channel 23 increases the integration of the portable oxygen concentrator 10, reduces unnecessary gas pipelines, reduces oxygen leakage, and improves the oxygen production efficiency of the portable oxygen concentrator 10.

[0038] Oxygen enters the primary oxygen storage chamber sequentially through molecular sieve A tower and molecular sieve B tower, passing through molecular sieve A tower interface 2110a and molecular sieve B tower interface 2110b respectively. Each molecular sieve A tower interface 2110a and molecular sieve B tower interface 2110b is equipped with a one-way valve to allow oxygen to flow unidirectionally into the oxygen generating chamber 211. Then, the oxygen is divided into two paths. One path enters the oxygen storage chamber 212 through the air inlet 2110 on the side wall of the oxygen generating chamber 211. In some embodiments, the pressure sensor interface on the side wall of the oxygen storage chamber 212 is connected to a pressure sensor through a silicone tube. The pressure sensor can accurately measure the oxygen pressure inside the oxygen storage chamber 212. Another oxygen supply route passes through the silicone tubing on the side wall of the oxygen storage chamber 212 to the inlet chamber of the oxygen pulse valve. The oxygen then enters the outlet chamber 222 of the pulse valve via a pulsed flow through the outlet solenoid valve, and then passes through the throttle valve 2210 at the inlet of the oxygen concentration sensor 50 to the inlet end of the sensor. Finally, it enters the breathing sensor trigger chamber from the outlet end of the sensor, while the oxygen concentration sensor 50 calculates the oxygen concentration. The oxygen supply duct 23 has a pump port 232 for connecting to the oxygen concentration sensor 50. In some embodiments, the oxygen supply duct 23 includes an anti-backflow check valve bracket 233, a reset component 234, and a sealing component 235. The anti-backflow check valve bracket 233 provides support. The reset component 234 continuously provides a stable rebound force, ensuring that the sealing component 235 is always in a ready-to-use state. The shape of the sealing element 235 can fit into the pump port 232 to achieve an airtight seal. Specifically, the reset element 234 is connected between the anti-backflow check valve bracket 233 and the sealing element 235. The reset element 234 applies pressure to the sealing element 235 to drive it to detachably block the pump port 232. When the oxygen generator is not working, the pressure applied by the reset element 234 makes the sealing element 235 tightly fit the pump port 232, forming a reliable seal. When the oxygen generator is working, the force generated by the oxygen will cause the sealing element 235 to temporarily detach from the pump port 232, allowing oxygen to pass through. After the test is completed, the reset element 234 immediately resets the sealing element 235, resealing the pump port 232. The above structure has the function of preventing oxygen backflow, while maintaining good sealing performance of the oxygen supply channel 23, thus preventing oxygen leakage.

[0039] In some embodiments, the first end of the anti-backflow check valve bracket 233 extends out of the oxygen generator, and the second end of the anti-backflow check valve bracket 233 is threaded into the oxygen supply channel 23. By rotating the first end of the anti-backflow check valve bracket 233, the pressure applied by the reset member 234 to the sealing cover can be controlled, thereby enabling manual tightening or loosening of the reset member 234 to adjust the force of the reset member 234, thereby preventing the sealing member 235 from pressing too tightly against the pump port 232, resulting in insufficient oxygen output.

[0040] In some embodiments, the reset member 234 includes a telescopic spring 2340, and the sealing member 235 includes a silicone cap 2351. One end of the spring is firmly connected to the anti-backflow check valve bracket 233, and the other end is tightly fixed to the silicone cap 2351, ensuring that the spring can always provide a uniform clamping force to the silicone cap 2351, making the sealing effect lasting and stable. The diameter of the silicone cap 2351 is larger than the diameter of the pump port 232, ensuring that the silicone cap 2351 can completely cover the edge of the pump port 232, forming an all-round sealing protection when the oxygen generator is not working. The soft properties of the silicone material allow it to perfectly conform to the irregular surface of the pump port 232, effectively preventing oxygen leakage.

[0041] The oxygen delivery channel 23 and the oxygen outlet 231 are connected by an oxygen delivery pipe 236. The oxygen delivery pipe 236 contains a filter 2361, which effectively intercepts fine particulate matter, ensuring the purity of the output oxygen. In some embodiments, the filter 2361 can have a detachable structure for easy regular cleaning and replacement, ensuring filtration effectiveness over long-term use. The base 20 has a one-piece molded structure, providing good structural stability and airtightness. The surface of the base 20 forms three main functional air passages: the oxygen generating channel 21, the oxygen outlet channel 22, and the oxygen delivery channel 23. All air passages are arranged on the same working surface of the base 20. This centralized layout saves space, facilitates installation and maintenance, reduces unnecessary air passages to prevent oxygen leakage, and improves the oxygen generation efficiency of the portable oxygen concentrator 10. The air passages are physically isolated by partitions 70, effectively preventing cross-flow interference and ensuring the specificity of the oxygen delivery path. In some embodiments, the portable oxygen concentrator 10 also includes a cylinder head 60, which has a sealing function. When the cylinder head 60 is closed, it is tightly connected to the base 20 through evenly distributed fastening points, so that a relatively closed air passage space is formed inside the oxygen concentrator. This not only prevents gas leakage, but also effectively isolates external pollutants and ensures the cleanliness of the oxygen.

[0042] In some embodiments, the oxygen pulse assembly 40 and the oxygen concentration sensor 50 are detachably mounted on the side of the base 20 opposite to the cylinder head 60. This detachable structure facilitates installation and maintenance. Simultaneously, mounting the oxygen pulse assembly 40 and the oxygen concentration sensor 50 on the same side allows for centralized arrangement of electrical components, facilitating routine maintenance and improving the overall structural compactness. In some embodiments, the base 20 has a boss 25 that surrounds an oxygen-generating chamber 211. A portion of the oxygen storage chamber 212 surrounds the boss 25, shortening the oxygen transmission path from generation to storage, reducing the risk of oxygen leakage, and minimizing unnecessary gas paths, thus improving the oxygen generation efficiency of the portable oxygen concentrator 10. Furthermore, the surrounding structure enhances space utilization, maintaining a compact size while accommodating a larger oxygen storage capacity.

[0043] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A portable oxygen concentrator, characterized in that, It includes a base, an oxygen generating component, an oxygen pulse component, and an oxygen concentration sensor. The base forms an oxygen generating channel, an oxygen output channel, and an oxygen delivery channel that are connected in sequence. The end of the oxygen delivery channel is connected to an oxygen outlet. Oxygen can pass through the connecting air passages in the oxygen generating channel, the oxygen output channel, and the oxygen delivery channel in sequence and be discharged from the oxygen outlet. The oxygen generating channel includes an oxygen generating chamber and an oxygen storage chamber. The oxygen generating component is connected to the air inlet of the oxygen generating chamber. The oxygen generating chamber is connected to the oxygen outlet channel and is also connected to the oxygen storage chamber through a gas cylinder throttle valve. The oxygen outlet pulse component is located in the oxygen outlet channel, and the oxygen concentration sensor is located between the oxygen outlet channel and the oxygen delivery channel.

2. The portable oxygen concentrator according to claim 1, characterized in that, The oxygen supply channel includes a pulse valve inlet chamber and a pulse valve outlet chamber. The oxygen supply chamber is connected to the pulse valve inlet chamber via a pipe, and the pulse valve inlet chamber is connected to the pulse valve outlet chamber via the oxygen supply pulse assembly.

3. The portable oxygen concentrator according to claim 2, characterized in that, The pulse valve outlet chamber is connected to one end of the oxygen concentration sensor via a throttle valve, and the other end of the oxygen concentration sensor is connected to the oxygen supply channel.

4. The portable oxygen concentrator according to claim 1, characterized in that, The oxygen supply channel has a pump port for connecting to the oxygen concentration sensor. The oxygen supply channel is equipped with an anti-backflow check valve bracket, a reset component, and a sealing component. The reset component is connected between the anti-backflow check valve bracket and the sealing component. The reset component applies pressure to the sealing component to drive the sealing component to detachably block the pump port.

5. The portable oxygen concentrator according to claim 4, characterized in that, The reset component includes a telescopic spring, and the sealing component includes a silicone cap. One end of the telescopic spring is connected to the anti-backflow check valve bracket, and the other end is connected to the silicone cap. The diameter of the silicone cap is larger than the diameter of the pump port.

6. The portable oxygen concentrator according to claim 1, characterized in that, The oxygen supply channel is connected to the oxygen outlet via an oxygen supply pipe, and the oxygen supply pipe is equipped with a filter.

7. The portable oxygen concentrator according to claim 1, characterized in that, It also includes a cylinder head, the base is integrally formed, the oxygen generating passage, the oxygen outlet passage and the oxygen delivery passage are exposed on the same side of the base, the oxygen generating passage, the oxygen outlet passage and the oxygen delivery passage are separated by a partition, and the cylinder head is fitted onto the base to seal the oxygen generating passage, the oxygen outlet passage and the oxygen delivery passage.

8. The portable oxygen concentrator according to claim 7, characterized in that, The oxygen pulse assembly and the oxygen concentration sensor are detachably mounted on the side of the base away from the cylinder head.

9. The portable oxygen concentrator according to claim 1, characterized in that, The oxygen generating assembly includes a molecular sieve A tower and a molecular sieve B tower, both of which are connected to the oxygen generating chamber via a one-way valve.

10. The portable oxygen concentrator according to claim 1, characterized in that, The base has a boss, which surrounds and forms the oxygen generating chamber, and part of the oxygen storage chamber surrounds the boss.

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