Portable oxygen generator

Abstract

The portable oxygen generator comprises a base, an oxygen generation assembly, an oxygen output pulse assembly and an oxygen concentration sensor, an oxygen generation air channel, an oxygen output air channel and an oxygen supply air channel which are sequentially communicated are formed in the base, and the tail end of the oxygen supply air channel 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] The present invention relates to the technical field of oxygen generators, and particularly to a portable oxygen generator. Background Art

[0002] With the progress of medical technology and the improvement of people's health needs, portable oxygen generators are increasingly widely used in scenarios such as home medical care, outdoor activities, and plateau travel. Traditional oxygen generation equipment is usually large in volume, complex in structure, and insufficient in oxygen output stability, making it difficult to meet users' requirements for portability and efficient oxygen supply. Most of the existing portable oxygen generators adopt a design mode in which the oxygen generation, oxygen outlet, and oxygen supply air paths are relatively independent. This separated structure has many technical defects. For example, since the oxygen generation, storage, and delivery air paths are independent of each other, additional connecting pipes and buffer chambers are required between each module, resulting in redundant equipment structure, making it difficult to achieve miniaturization and lightweight, and reducing portability; the independent air path design makes oxygen need to be shunted and redirected multiple times during transmission, increasing the air flow resistance, resulting in oxygen pressure loss, affecting the adsorption and desorption efficiency of the oxygen generation component, and thus reducing the overall oxygen generation rate; due to the separation of the air paths, there is a lack of real-time monitoring and feedback adjustment mechanism during the oxygen delivery process, resulting in large fluctuations in the output oxygen concentration, making it difficult to maintain at the medical-grade standard and affecting the treatment effect. Therefore, there is an urgent need for a portable oxygen generator with high integration and easy maintenance. Summary of the Invention

[0003] Based on this, the present application provides a portable oxygen generator, which adopts an integrated structural design of the oxygen generation airway, the oxygen outlet airway, and the oxygen supply airway, can reduce the volume of the portable oxygen generator, and effectively prevent oxygen leakage.

[0004] A portable oxygen generator includes a base, an oxygen generation component, an oxygen outlet pulse component, and an oxygen concentration sensor. A sequentially connected oxygen generation airway, an oxygen outlet airway, and an oxygen supply airway are formed in the base. The end of the oxygen supply airway is connected with an oxygen outlet nozzle, and oxygen can sequentially pass through the connected air paths in the oxygen generation airway, the oxygen outlet airway, and the oxygen supply airway to be discharged from the oxygen outlet nozzle;

[0005] The oxygen generation airway includes an oxygen generation chamber and an oxygen storage chamber. The oxygen generation component is connected to the air inlet of the oxygen generation chamber. 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 component is arranged in the oxygen outlet airway, and the oxygen concentration sensor is arranged between the oxygen outlet airway and the oxygen supply airway.

[0006] In the above portable oxygen generator, oxygen sequentially passes through the oxygen-making airway, the oxygen outlet airway, and the air connection path in the oxygen supply airway to be discharged from the oxygen outlet nozzle. The flow path of oxygen inside the device is clear. First, oxygen is prepared through the oxygen-making airway, then the flow rate is adjusted via the oxygen outlet airway, and finally, it is stably output through the oxygen supply airway. The oxygen concentration sensor is arranged between the oxygen outlet airway and the oxygen supply airway to monitor the oxygen concentration about to be output in real time. The integrated structural design of the oxygen-making airway, the oxygen outlet airway, and the oxygen supply airway reduces the volume of the portable oxygen generator and reduces the external additional pipeline connections in the oxygen-making process, effectively preventing oxygen leakage.

[0007] In one embodiment, the oxygen outlet airway includes a pulse valve intake chamber and a pulse valve outlet chamber. The oxygen-making chamber is connected to the pulse valve intake chamber through a pipeline, and the pulse valve intake chamber is connected to the pulse valve outlet chamber through the oxygen outlet pulse assembly.

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

[0009] In one embodiment, the oxygen supply airway is provided with a pump port to connect the oxygen concentration sensor. The oxygen supply airway is provided with a check valve support for preventing backflow, a reset member, and a plugging member. The reset member is connected between the check valve support for preventing backflow and the plugging member, and the reset member applies pressure to the plugging member to drive the plugging member to detachably block the pump port.

[0010] In one embodiment, the reset member includes a telescopic spring, and the plugging member includes a silica gel cover. One end of the telescopic spring is connected to the check valve support for preventing backflow, and the other end is connected to the silica gel cover. The diameter of the silica gel cover is larger than the diameter of the pump port.

[0011] In one embodiment, the oxygen supply airway is connected to the oxygen outlet nozzle through an oxygen supply pipeline, and a filter is provided in the oxygen supply pipeline.

[0012] In one embodiment, it further includes a cylinder head, which is integrally formed with the base. The oxygen-making airway, the oxygen outlet airway, and the oxygen supply airway are exposed on the same side of the base. The oxygen-making airway, the oxygen outlet airway, and the oxygen supply airway are separated by a partition. The cylinder head is covered on the base to seal the oxygen-making airway, the oxygen outlet airway, and the oxygen supply airway.

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

[0014] In one embodiment, the oxygen generation component includes a molecular sieve A tower and a molecular sieve B tower, and both the molecular sieve A tower and the molecular sieve B tower are communicated with the oxygen generation chamber through check valves.

[0015] In one embodiment, a boss is provided in the base, the boss surrounds and forms the oxygen generation chamber, and part of the oxygen storage chamber surrounds the boss. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0017] Figure 1 is a schematic structural diagram of a portable oxygen generator according to an embodiment;

[0018] Figure 2 is a schematic diagram of a partial structure of a portable oxygen generator according to an embodiment;

[0019] Figure 3 is a schematic diagram of a partial structure of a portable oxygen generator according to an embodiment;

[0020] Figure 4 is a schematic diagram of the oxygen flow direction of a portable oxygen generator according to an embodiment;

[0021] Figure 5 is an exploded view of a partial structure of a portable oxygen generator according to an embodiment;

[0022] Figure 6 is a schematic diagram of a partial structure of a portable oxygen generator according to an embodiment;

[0023] Figure 7 is a cross-sectional view of a partial structure of a portable oxygen generator according to an embodiment.

[0024] Reference numerals: Portable oxygen generator 10; Base 20; Oxygen generation airway 21; Oxygen generation chamber 211; Air inlet 2110; Molecular sieve A tower interface 2110a; Molecular sieve B tower interface 2110b; Oxygen storage chamber 212; Oxygen outlet airway 22; Pulse valve intake chamber 221; Throttle valve 2210; Pulse valve outlet chamber 222; Oxygen delivery airway 23; Oxygen outlet nozzle 231; Pump port 232; Anti-backflow check valve bracket 233; Reset member 234; Telescopic spring 2340; Sealing member 235; Silicone cover 2351; Oxygen delivery pipe 236; Filter 2361; Gas tank throttle valve 24; Boss 25; Oxygen outlet pulse assembly 40; Oxygen concentration sensor 50; Cylinder head 60; Partition plate 70 DETAILED DESCRIPTION OF THE EMBODIMENTS

[0025] This section will describe in detail specific embodiments of the present invention. Preferred embodiments of the present invention are shown in the accompanying drawings. The function of the drawings is to supplement the description in the text part of the specification, enabling people to intuitively and vividly understand each technical feature and the overall technical solution of the present invention. However, it should not be construed as a limitation on the protection scope of the present invention.

[0026] In the description of the present invention, the meaning of "a plurality of" is more than two. Understandings such as "greater than", "less than", "exceeding", etc. do not include the recited number, and understandings such as "above", "below", "within", etc. include the recited number. If there is a description of "first" and "second", it is only for the purpose of distinguishing technical features and cannot be construed as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features or implicitly indicating the sequence relationship of the indicated technical features.

[0027] In the present invention, unless otherwise clearly specified and limited, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on" the second feature may be that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature is at a higher horizontal height than the second feature. The first feature being "under", "beneath" and "under" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature is at a lower horizontal height than the second feature.

[0028] In the present invention, unless otherwise clearly defined, terms such as "arranged", "installed", "connected", etc. should be understood in a broad sense. For example, they can be directly connected, or indirectly connected through an intermediate medium; they can be fixedly connected, or detachably connected, or integrally formed; they can be mechanically connected; they can be the communication inside two elements or the interaction relationship between two elements. Those skilled in the art can reasonably determine the specific meanings of the above terms in the present invention in combination with the specific content of the technical solution.

[0029] With the progress of medical technology and the increasing demand for health among people, portable oxygen generators are being increasingly widely used in scenarios such as home medical care, outdoor activities, and high-altitude travel. Traditional oxygen generation equipment is usually large in size, complex in structure, and insufficient in the stability of oxygen output, making it difficult to meet users' requirements for portability and efficient oxygen supply. Most of the existing portable oxygen generators adopt a design mode in which the oxygen generation, oxygen outlet, and oxygen delivery gas paths are relatively independent. This separated structure has many technical defects. For example, since the oxygen generation, storage, and delivery gas paths are independent of each other, additional connecting pipes and buffer chambers are required between each module, resulting in a redundant device structure, making it difficult to achieve miniaturization and lightweight, and reducing portability; the independent gas path design enables oxygen to undergo multiple shunts and turns during transmission, increasing the airflow resistance, resulting in oxygen pressure loss, affecting the adsorption and desorption efficiency of the oxygen generation components, and thus reducing the overall oxygen generation rate; due to the separation of the gas paths, there is a lack of real-time monitoring and feedback adjustment mechanism during the oxygen delivery process, resulting in large fluctuations in the output oxygen concentration, making it difficult to maintain at the medical-grade standard and affecting the treatment effect. Therefore, there is an urgent need for a portable oxygen generator with high integration, precise gas path linkage, and easy maintenance.

[0030] Referring to Figures 1 to 7 , to solve the above problems, an embodiment of the present application provides a portable oxygen generator 10, Figure 1 which is a schematic structural diagram of the portable oxygen generator 10 according to an embodiment; Figure 2 , Figure 3 , Figure 5 and Figure 6 are schematic diagrams of partial structures of the portable oxygen generator 10 according to an embodiment; Figure 4 is a schematic diagram of the oxygen flow direction of the portable oxygen generator 10 according to an embodiment; Figure 7 is a cross-sectional view of a partial structure of the portable oxygen generator 10 according to an embodiment. The portable oxygen generator 10 includes a base 20, an oxygen generation component, an oxygen outlet pulse component 40, and an oxygen concentration sensor 50. A sequentially connected oxygen generation airway 21, an oxygen outlet airway 22, and an oxygen delivery airway 23 are formed in the base 20. The end of the oxygen delivery airway 23 is connected with an oxygen outlet nozzle 231. Oxygen can sequentially pass through the connected gas paths in the oxygen generation airway 21, the oxygen outlet airway 22, and the oxygen delivery airway 23 to be discharged from the oxygen outlet nozzle 231; the oxygen generation airway 21 includes an oxygen generation chamber 211 and an oxygen storage chamber 212. The oxygen generation component is connected to the air inlet 2110 of the oxygen generation chamber 211. The oxygen generation chamber 211 is communicated with the oxygen outlet airway 22 and is communicated with the oxygen storage chamber 212 through a gas tank throttle valve 24; the oxygen outlet pulse component 40 is arranged in the oxygen outlet airway 22, and the oxygen concentration sensor 50 is arranged between the oxygen outlet airway 22 and the oxygen delivery airway 23.

[0031] Referring to Figures 1 to 7, in the portable oxygen generator 10 provided by the present application, the portable oxygen generator 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 continuously connected gas channel structures inside. The gas channel structure includes three major functional gas paths: an oxygen generation airway 21, an oxygen output airway 22, and an oxygen delivery airway 23, which are connected in sequence. The end of the oxygen delivery airway 23 is connected with an oxygen outlet nozzle 231, and oxygen is provided for the user through the oxygen outlet nozzle 231. Specifically, oxygen sequentially passes through the connected gas paths in the oxygen generation airway 21, the oxygen output airway 22, and the oxygen delivery airway 23 to be discharged from the oxygen outlet nozzle 231. The flow path of oxygen inside the device is clear and reasonable. First, oxygen preparation is completed through the oxygen generation airway 21, then the flow rate is adjusted via the oxygen output airway 22, and finally, stable output is achieved through the oxygen delivery airway 23.

[0032] The oxygen generation airway 21 includes an oxygen generation chamber 211 and an oxygen storage chamber 212. The oxygen generation component is connected to the air inlet 2110 position of the oxygen generation chamber 211 and is responsible for separating and extracting oxygen from the air. The oxygen generation chamber 211 is not only connected to the oxygen output airway 22 but also connected to the oxygen storage chamber 212 through a specially designed gas tank throttle valve 24. The dual connection structure design not only ensures the continuous supply of oxygen but also realizes the reasonable storage of oxygen. In the portable oxygen generator 10, after oxygen is generated by the oxygen generation component, it enters the oxygen generation airway 21, and most of the oxygen is stored in the oxygen storage chamber 212.

[0033] In some embodiments, the oxygen generation component is connected to the air inlet 2110 of the oxygen generation chamber 211. The oxygen generation component can adopt the molecular sieve dual tower pressure swing adsorption technology to generate oxygen. Specifically, the oxygen generation component includes a molecular sieve A tower and a molecular sieve B tower. The molecular sieve A tower and the molecular sieve B tower can alternately generate oxygen, and continuous and stable oxygen production is achieved through the alternating operation of the molecular sieve A tower and the molecular sieve B tower. When the molecular sieve A tower is in the adsorption state, compressed air enters from the bottom of the tower, and nitrogen molecules in the air are selectively adsorbed by the molecular sieve, while oxygen passes through smoothly to become the product gas, and then enters the oxygen generation chamber 211 through the air inlet 2110 of the oxygen generation chamber 211. At the same time, the B tower is in the desorption and regeneration stage, and the adsorbed nitrogen is released by rapid depressurization to complete the regeneration preparation of the molecular sieve. In some embodiments, precise timing can be achieved through an intelligent control system to regularly alternate the working states of the molecular sieve A tower and the molecular sieve B tower. The molecular sieve A tower changes from adsorption to desorption, discharging nitrogen-rich waste gas, and the molecular sieve B tower changes from regeneration to adsorption and starts to produce oxygen to ensure continuous oxygen output without interruption and provide a continuous and stable medical-grade oxygen supply for users. In some embodiments, both the molecular sieve A tower and the molecular sieve B tower are connected to the oxygen generation chamber 211 through one-way valves to ensure that oxygen enters the oxygen generation chamber 211 unidirectionally from the oxygen generation component without backflow, thereby ensuring a continuous and stable oxygen supply for users.

[0034] The oxygen generation chamber 211 is connected to the oxygen outlet channel 22 so that oxygen can smoothly enter the oxygen outlet channel 22 from the oxygen generation channel 21. The oxygen generation chamber 211 is connected to the oxygen storage chamber 212 through a gas tank throttle valve 24. The gas tank throttle valve 24 can control the flow rate of oxygen, prevent oxygen from directly impacting the oxygen storage chamber 212, maintain the working air pressure of the portable oxygen generator 10 within a safe and reasonable range, and protect the safety of the components of the portable oxygen generator 10. At the same time, the gas tank throttle valve 24 can also reasonably throttle to reduce unnecessary oxygen loss.

[0035] The oxygen outlet pulse assembly 40 is arranged in the oxygen outlet channel 22. The oxygen outlet pulse assembly 40 can control the oxygen output rhythm. The oxygen outlet pulse assembly 40 can intelligently adjust the oxygen output pulse according to the breathing frequency of the user, ensure that the oxygen delivery is synchronized with the user's breathing, and greatly improve the oxygen utilization rate. The oxygen concentration sensor 50 is arranged between the oxygen outlet channel 22 and the oxygen supply channel 23 and can real-time monitor the oxygen concentration about to be output to ensure that each breath of oxygen obtained by the user meets the medical standard. Through the integrated design of the oxygen generation channel 21, the oxygen outlet channel 22, and the oxygen supply channel 23, the above structure enables the functional components to work together, can reduce the volume of the portable oxygen generator 10, reduce the external additional pipeline connections in the oxygen generation process, and can effectively prevent oxygen leakage.

[0036] The oxygen outlet channel 22 includes a pulse valve inlet chamber 221 and a pulse valve outlet chamber 222. The oxygen generation chamber 211 is connected to the pulse valve inlet chamber 221 through a pipeline, enabling the prepared oxygen to enter the oxygen outlet channel 22. The pulse valve inlet chamber 221 serves as an oxygen buffer storage space, which can suppress the airflow fluctuation and provide a stable gas source for subsequent pulse oxygen supply. The oxygen outlet pulse assembly 40 is connected between the pulse valve inlet chamber 221 and the pulse valve outlet chamber 222, and the pulse valve inlet chamber 221 is connected to the pulse valve outlet chamber 222 through the oxygen outlet pulse assembly 40. The oxygen outlet pulse assembly 40 can intelligently adjust the timing and flow rate of oxygen delivery according to the breathing frequency and oxygen consumption demand of the user. When the oxygen outlet pulse assembly 40 is activated, oxygen orderly passes through from the pulse valve inlet chamber 221 and enters the pulse valve outlet chamber 222 for preparation of output; during the intermittent period, it remains in the closed state to achieve precise throttling.

[0037] The air outlet chamber 222 of the pulse valve is communicated with one end of the oxygen concentration sensor 50 through the throttle valve 2210. The throttle valve 2210 can convert the high-speed pulsed air flow into a stable and gentle detection air flow, which not only ensures the accuracy of the detection by the oxygen concentration sensor 50, but also avoids the impact of the large-flow air flow on the oxygen concentration sensor 50, enabling the sensor to continuously monitor the oxygen concentration in the best working state. The other end of the oxygen concentration sensor 50 is communicated with the oxygen supply channel 23, and the quality of the oxygen to be delivered to the user can be monitored in real time to ensure that the breathed oxygen is medical-grade oxygen meeting the standards. Integrating the air outlet chamber 222 of the pulse valve, the throttle valve 2210, the oxygen concentration sensor and the oxygen supply channel 23 organically increases the integration degree of the portable oxygen generator 10, reduces unnecessary gas pipelines, can reduce the leakage of oxygen, and improves the oxygen generation efficiency of the portable oxygen generator 10.

[0038] Oxygen enters the primary oxygen storage cavity successively and alternately through the molecular sieve A tower interface 2110a and the molecular sieve B tower interface 2110b of the molecular sieve A tower and the molecular sieve B tower. A check valve is respectively provided at the molecular sieve A tower interface 2110a and the molecular sieve B tower interface 2110b to make oxygen flow into the oxygen generation chamber 211 unidirectionally. Then the oxygen is divided into two paths. One path enters the oxygen storage chamber 212 reciprocally through the air inlet 2110 on the side wall of the oxygen generation chamber 211. In some embodiments, the pressure sensor interface on the side wall of the oxygen storage chamber 212 is connected to the pressure sensor through a silica gel tube, and the pressure sensor can accurately measure the oxygen pressure in the oxygen storage chamber 212. The other path of oxygen reaches the inlet cavity of the oxygen outlet pulse valve through the silica gel tube on the side wall of the oxygen storage chamber 212. The oxygen passes through the oxygen outlet pulse solenoid valve and enters the pulse valve outlet chamber 222 in a pulsed manner, then enters the inlet end of the oxygen concentration sensor 50 through the throttle valve 2210 at the inlet of the oxygen concentration sensor 50, and enters the respiratory induction trigger cavity from the outlet end of the oxygen concentration sensor 50. At the same time, the oxygen concentration sensor 50 measures the oxygen concentration. The oxygen supply channel 23 is provided with a pump port 232, and the pump port 232 is used to connect to the oxygen concentration sensor 50. In some embodiments, an anti-backflow check valve bracket 233, a reset member 234 and a plugging member 235 are provided in the oxygen supply channel 23. The anti-backflow check valve bracket 233 has a certain supporting effect. The reset member 234 can continuously provide a stable return spring force to ensure that the plugging member 235 is always in a standby state. The shape of the plugging member 235 can fit with the pump port 232 to achieve airtight sealing. Specifically, the reset member 234 is connected between the anti-backflow check valve bracket 233 and the plugging member 235, and the reset member 234 applies pressure to the plugging member 235 to drive the plugging member 235 to detachably block the pump port 232. When the oxygen generator is not working, the pressure applied by the reset member 234 makes the plugging member 235 closely fit the pump port 232 to form a reliable seal. When the oxygen generator is working, the impact force generated by the oxygen will make the plugging member 235 temporarily detach from the pump port 232 to allow oxygen to pass through. After the detection is completed, the reset member 234 immediately resets the plugging member 235 to re-seal the pump port 232. The above structure has the function of preventing oxygen from flowing back, and at the same time keeps the oxygen supply channel 23 having good sealing performance and can avoid 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 threadedly connected to the oxygen supply channel 23. By rotating the first end of the anti-backflow check valve bracket 233, the magnitude of the pressure applied by the reset member 234 to the plugging cover can be controlled, and thus the reset member 234 can be manually tightened or loosened to adjust the force of the reset member 234, so as to prevent the plugging member 235 from pressing the pump port 232 too tightly resulting in insufficient oxygen output.

[0040] In some embodiments, the reset member 234 includes a telescopic spring 2340, and the blocking member 235 includes a silicone cover 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 cover 2351, ensuring that the spring can always provide uniform compression force for the silicone cover 2351, so that the sealing effect is long-lasting and stable. The diameter of the silicone cover 2351 is larger than the diameter of the pump port 232, ensuring that the silicone cover 2351 can completely cover the edge of the pump port 232, forming a full range of sealing protection when the oxygen generator is not working, and the softness of the silicone material enables it to perfectly fit the irregular surface of the pump port 232, effectively preventing oxygen leakage.

[0041] The oxygen supply channel 23 is connected to the oxygen outlet nozzle 231 through an oxygen supply pipe 236. A filter 2361 is provided in the oxygen supply pipe 236, which can effectively intercept tiny particles and ensure the purity of the output oxygen. In some embodiments, the filter 2361 can be a detachable structure, which is convenient for regular cleaning and replacement to ensure the filtering effect during long-term use. The base 20 is an integrated structure with good structural stability and air tightness. The surface of the base 20 forms three functional gas paths, namely, the oxygen production channel 21, the oxygen outlet channel 22 and the oxygen supply channel 23. All gas paths are arranged on the same working surface of the base 20. The centralized layout saves space and is easy to install and maintain. Reducing unnecessary gas paths can avoid oxygen leakage and improve the oxygen production efficiency of the portable oxygen concentrator 10. Physical isolation is achieved between the gas paths through a partition 70, which effectively prevents cross-interference of airflow and ensures the specificity of the oxygen delivery path. In some embodiments, the portable oxygen concentrator 10 further includes a cylinder cover 60, which has a sealing function. When the cylinder cover 60 is closed, it is tightly combined with the base 20 through evenly distributed fastening points, so that a relatively closed gas path space is formed inside the oxygen concentrator, which can not only prevent gas leakage, but also effectively isolate external pollutants to ensure the cleanliness of 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 away from the cylinder head 60. The detachable structure is convenient for installation and maintenance. At the same time, the oxygen pulse assembly 40 and the oxygen concentration sensor 50 are installed on the same side, and the electrical components are centrally arranged, which is convenient for daily maintenance and improves the compactness of the overall structure. In some embodiments, a boss 25 is provided in the base 20, and the boss 25 is surrounded to form an oxygen production chamber 211. Part of the oxygen storage chamber 212 surrounds the boss 25, which can shorten the transmission path of oxygen from oxygen production to storage, reduce the risk of oxygen leakage, reduce unnecessary gas paths, and improve the oxygen production efficiency of the portable oxygen concentrator 10. At the same time, the surround structure can improve space utilization, maintain a small size while having a larger oxygen storage capacity.

[0043] The above-described embodiments merely represent several implementation manners of the present invention. The description is relatively specific and detailed, but it should not be construed as a limitation on the scope of the invention patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several variations and improvements can still be made, and these all fall within the protection scope of the present invention. Therefore, the protection scope of the present invention patent shall be subject to the appended claims.

Claims

1. A portable oxygen generator, characterized in that, The oxygen generator comprises a base, an oxygen production component, an oxygen outlet pulse component and an oxygen concentration sensor. The base is formed with an oxygen production channel, an oxygen outlet channel and an oxygen supply channel which are connected in sequence. The end of the oxygen supply channel is connected with an oxygen outlet nozzle. Oxygen can be discharged from the oxygen outlet nozzle through the connecting gas paths in the oxygen production channel, the oxygen outlet channel and the oxygen supply channel in sequence. The oxygen production passage comprises an oxygen production chamber and an oxygen storage chamber, the oxygen production component is connected to the air inlet of the oxygen production chamber, the oxygen production chamber is communicated with the oxygen outlet passage and is communicated with the oxygen storage chamber through a gas tank throttle valve; the oxygen outlet pulse component is arranged in the oxygen outlet passage, and the oxygen concentration sensor is arranged between the oxygen outlet passage and the oxygen supply passage.

2. The portable oxygen generator according to claim 1, wherein, The oxygen outlet passage comprises a pulse valve air inlet chamber and a pulse valve air outlet chamber. The oxygen production chamber is connected with the pulse valve air inlet chamber through a pipeline. The pulse valve air inlet chamber is connected with the pulse valve air outlet chamber through the oxygen outlet pulse assembly.

3. The portable oxygen generator according to claim 2, characterized in that, The pulse valve air outlet chamber is communicated with one end of the oxygen concentration sensor through a throttle valve, and the other end of the oxygen concentration sensor is communicated with the oxygen supply passage.

4. The portable oxygen generator according to claim 1, characterized in that, The oxygen supply passage is provided with a pump port for connecting the oxygen concentration sensor, and an anti-backflow one-way valve bracket, a reset component and a blocking component are provided in the oxygen supply passage. The reset component is connected between the anti-backflow one-way valve bracket and the blocking component, and the reset component applies pressure to the blocking component to drive the blocking component to detachably block the pump port.

5. The portable oxygen generator according to claim 4, wherein, The reset member includes a telescopic spring, and the blocking member includes a silicone cover. One end of the telescopic spring is connected to the anti-backflow one-way valve bracket, and the other end is connected to the silicone cover. The diameter of the silicone cover is larger than the diameter of the pump port.

6. The portable oxygen generator according to claim 1, wherein, The oxygen supply passage is connected to the oxygen outlet nozzle through an oxygen supply pipeline, and a filter is arranged in the oxygen supply pipeline.

7. The portable oxygen generator according to claim 1, wherein It also includes a cylinder head, the base is integrally formed, the oxygen production passage, the oxygen outlet passage and the oxygen supply passage are exposed on the same side of the base, the oxygen production passage, the oxygen outlet passage and the oxygen supply passage are separated by a partition, and the cylinder head is covered on the base to seal the oxygen production passage, the oxygen outlet passage and the oxygen supply passage.

8. The portable oxygen generator according to claim 7, wherein The oxygen pulse assembly and the oxygen concentration sensor are detachably mounted on a side of the base facing away from the cylinder head.

9. The portable oxygen generator according to claim 1, wherein, The oxygen production component includes a molecular sieve A tower and a molecular sieve B tower, and the molecular sieve A tower and the molecular sieve B tower are both connected to the oxygen production chamber through a one-way valve.

10. The portable oxygen generator according to claim 1, characterized in that, A boss is arranged in the base, the boss surrounds the oxygen production chamber, and a part of the oxygen storage chamber surrounds the boss.

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