Oxygen outlet system of oxygen generator and oxygen outlet valve of oxygen generator

Abstract

This invention discloses an oxygen generator oxygen output system and an oxygen generator output valve. The system includes an oxygen input module, an oxygen output module, an oxygen flow control module, and an oxygen flow path self-cleaning module. The input and output modules each have a first and a second medium channel with a single opening and arranged in opposite directions. The flow control module connects the two channels via an internal valve to control the oxygen flow. The self-cleaning module delivers clean gas to the flow path during oxygen generator downtime or within a preset cycle to purge impurities and condensate, ensuring the path remains clean. The output valve includes a third component with an internal valve connecting the first and second flow channels and an external mounting hole for stable fixation. This solution improves system adaptability through modular layout, prevents impurity accumulation through self-cleaning, ensures efficient oxygen distribution through precise on / off control of the output valve, and provides a stable overall structure and pure oxygen output, making it suitable for medical oxygen generators.

Description

Technical Field

[0001] This invention belongs to the technical field of oxygen concentrator accessories, and particularly relates to an oxygen concentrator oxygen output system and an oxygen concentrator oxygen output valve. Background Technology

[0002] In the field of medical oxygen concentrators, the oxygen output system is the core component for achieving targeted delivery and precise distribution of oxygen. Its structural rationality and operational stability directly determine the oxygen output efficiency, oxygen purity, and safety of the oxygen concentrator. Currently, oxygen concentrator output systems on the market generally suffer from the following technical challenges:

[0003] On the one hand, traditional oxygen output systems often employ an integrated "single input - single output" structure in their flow path design, with the connections between the flow channel and control components (such as valves) being non-modular. This structure makes it difficult to flexibly adjust the number of input / output units according to the oxygen generator's rated output demand. If an increase in oxygen flow is required, the entire oxygen output system component often needs to be replaced, which not only increases equipment upgrade costs but also reduces the system's adaptability and scalability. On the other hand, the docking accuracy between the flow channel and control components in the integrated structure depends on the overall assembly process. During long-term use, docking deviations can easily occur due to factors such as vibration and temperature changes, leading to oxygen leakage. This reduces oxygen output efficiency and may also affect the performance due to interference from external air quality.

[0004] On the other hand, the layout design of the control components (such as oxygen valves) and installation structure of existing oxygen supply systems lacks coordination. The installation interface of some oxygen valves is close to the docking area between the flow channel and the valve, which can easily interfere with the flow path during installation or maintenance, resulting in a decrease in the sealing performance between the valve and the channel. Moreover, the on / off control of most oxygen valves can only achieve a simple "fully open / fully closed" switch, and cannot dynamically adapt to the operating conditions of the oxygen generator (such as load operation, standby, and flow regulation). This results in oxygen waste when the system has low flow demand, and difficulty in ensuring a stable supply when the flow demand is high. The overall operating energy consumption is high, which cannot meet the oxygen generator's requirements for energy saving and precise control.

[0005] In addition, the selection of materials for components in traditional oxygen supply systems focuses on mechanical strength and does not adequately consider the compatibility with oxygen media. Some components are prone to oxidation and corrosion in long-term contact with high-purity oxygen, which not only shortens the service life of the components, but may also release harmful substances due to material aging, affecting the purity of oxygen and posing safety hazards. Summary of the Invention

[0006] The purpose of this invention is to provide an oxygen generator oxygen output system and an oxygen generator oxygen output valve to solve the problems mentioned in the background art.

[0007] In view of this, the present invention provides an oxygen generator oxygen output system, including an oxygen input module, an oxygen output module, an oxygen flow regulation module, and an oxygen flow path self-cleaning module. The oxygen input module has a single-opening first medium channel, and the oxygen output module has a single-opening second medium channel. The opening directions of the first and second medium channels are arranged in opposite directions. The oxygen flow regulation module is configured as an intermediate execution unit connecting the oxygen input module and the oxygen output module. It integrates a fluid control element with on / off control function. The fluid control element is used to establish a selective connection between the first and second medium channels. The oxygen flow path self-cleaning module forms a flow association with the oxygen input module, the oxygen flow regulation module, and the oxygen output module. It is used to deliver clean gas into the first medium channel, the fluid control element, and the second medium channel during oxygen generator downtime or within a preset cycle to purge and clean impurities and condensate adhering to the inner wall of the flow path, preventing impurities from accumulating and affecting oxygen flow efficiency or contaminating subsequent output oxygen, thereby forming a directional flow path from the oxygen input module to the fluid control element to the oxygen output module, realizing dynamic distribution and on / off management of oxygen during the oxygen generator oxygen output process.

[0008] A further embodiment of the present invention is that the oxygen flow control module adopts a distributed layout, with at least two sets of oxygen flow control modules respectively forming corresponding connections with both ends of the oxygen output module, and each set of oxygen flow control modules is symmetrically distributed about the central reference of the oxygen output module. The number of oxygen input modules matches the number of oxygen flow control modules, and each oxygen input module is connected to the side of the corresponding oxygen flow control module away from the oxygen output module, forming a modular combination structure. This structure can flexibly adjust the combination number of oxygen input modules and oxygen flow control modules based on the rated oxygen output requirement of the oxygen generator, while ensuring the balance and stability of the overall flow path of the system.

[0009] A further embodiment of the present invention is that the oxygen flow control module controls the oxygen flow permission between the first medium channel and the second medium channel by switching the state of its internal fluid control element. When the oxygen generator is in a load operation state, the fluid control element remains in a conducting state, allowing oxygen to flow unidirectionally from the first medium channel into the second medium channel through the fluid control element. When the oxygen generator is in a standby or flow regulation state, the fluid control element can switch to a closed state according to a preset command to block the oxygen flow. Through this dynamic control method, the oxygen output process of the oxygen generator is precisely matched with the operating conditions.

[0010] A further embodiment of the present invention is that the oxygen flow control module is provided with an integrated installation interface on its outer side. The integrated installation interface is adapted to the body support structure or internal fixed frame of the oxygen generator to position and fix the oxygen flow control module in a preset installation position. The location of the integrated installation interface avoids the docking area between the fluid control element and the medium channel to avoid interference with oxygen flow. At the same time, through structural limiting, it prevents the oxygen flow control module from being displaced due to vibration during the operation of the oxygen generator, ensuring the connection accuracy between the first medium channel, the fluid control element, and the second medium channel, and reducing the risk of oxygen leakage.

[0011] A further embodiment of the present invention is that the oxygen input module and the oxygen flow control module, and the oxygen flow control module and the oxygen output module are all connected in a standardized fixed manner. After connection, the relative positions of each module remain locked, ensuring that the docking end of the first medium channel and the fluid control element, and the docking end of the fluid control element and the second medium channel form a sealed connection, avoiding flow gaps caused by docking deviation, ensuring lossless flow of oxygen from input to output, and improving the oxygen output efficiency of the system.

[0012] A further embodiment of the present invention is that the single opening of the first medium channel is configured as a dedicated oxygen input port, and its opening specifications are matched with the interface parameters of the oxygen source output end of the oxygen generator, ensuring that oxygen can be efficiently introduced into the first medium channel through this port without any additional opening causing oxygen to overflow. The single opening of the second medium channel is configured as a dedicated oxygen output port, and its opening specifications are matched with the interface parameters of the oxygen-consuming end of the oxygen generator, ensuring that oxygen regulated by the fluid control element can be directionally delivered to the oxygen-consuming end through this port, realizing closed-loop distribution of oxygen.

[0013] A further embodiment of the present invention is that the materials of the oxygen input module, oxygen output module and oxygen flow control module all meet the requirements for the use of oxygen medium. They are inert materials with anti-oxidation properties and no harmful substances released, so as to avoid the chemical reaction between the materials and oxygen affecting the oxygen purity. At the same time, it ensures that each module maintains structural stability in the long-term oxygen contact environment and prevents the flow channel from deforming or breaking due to material aging.

[0014] An oxygen generator oxygen outlet valve, using any one of the oxygen generator oxygen outlet systems, includes a third component as the main structure of the oxygen outlet valve. The third component integrates a valve with on / off function. The valve is used to establish a selective connection between a first flow channel and a second flow channel of the oxygen generator. One side of the third component is fixedly connected to a second component of the oxygen generator, and the other side is fixedly connected to the first component of the oxygen generator. Both the first and second flow channels are single-opening structures, and their opening directions are arranged in opposite directions to achieve directional flow of oxygen from the first flow channel through the valve to the second flow channel.

[0015] A further embodiment of the present invention is that the third component has a mounting hole on one side of its exterior. The mounting hole is a hole-like structure that penetrates the side wall of the third component and is used to pass fasteners through it to fix the third component to a preset installation position on the oxygen generator. The diameter of the mounting hole is adapted to the size parameters of the fasteners, and its setting position avoids the docking area between the valve and the flow channel, ensuring the structural stability of the third component after it is fixed, avoiding interference with the oxygen flow path, and ensuring the docking accuracy between the valve and the first flow channel and the second flow channel.

[0016] A further embodiment of the present invention is an oxygen generator oxygen outlet valve, the two ends of which are respectively connected to a first flow channel and a second flow channel to form a complete oxygen flow path. When the oxygen generator triggers an oxygen outlet command, the valve switches to the conducting state, and oxygen can flow from the first flow channel into the valve, and then flow through the valve into the second flow channel. When the oxygen generator triggers an oxygen stop command, the valve switches to the closed state, cutting off the oxygen flow path. Through the on / off control of the valve, the core regulation function of the oxygen outlet valve on the oxygen distribution process of the oxygen generator is realized.

[0017] The beneficial effects of this invention are:

[0018] By dividing the oxygen output system into a modular structure consisting of an oxygen input module, an oxygen output module, and an oxygen flow control module, the combination of oxygen input and oxygen flow control modules can be flexibly adjusted based on the rated oxygen output requirements of the oxygen generator (e.g., at least two sets of control modules symmetrically distributed at both ends of the output module). This allows for adaptation and upgrades to the oxygen output flow rate without replacing the entire system, significantly improving system scalability and cost-effectiveness. Simultaneously, standardized fixed connections are used between modules, ensuring that their relative positions remain locked after connection. This guarantees a sealed connection between the first flow channel, valve, and second flow channel, preventing flow gaps caused by assembly deviations. Furthermore, the integrated installation interface of the oxygen flow control module avoids the valve and channel connection areas, further preventing installation interference that could lead to a decrease in sealing performance, effectively reducing the risk of oxygen leakage and ensuring oxygen output efficiency and purity.

[0019] The fluid control element inside the oxygen flow regulation module has precise on / off control capabilities, dynamically adapting to the oxygen generator's operating conditions: when the oxygen generator is under load, the valve remains open, ensuring a stable unidirectional flow of oxygen from the first flow channel to the second flow channel; when the oxygen generator is in standby or low-flow regulation mode, the valve can switch to the closed state according to preset instructions, blocking oxygen flow and avoiding unnecessary oxygen waste. This dynamic regulation method not only achieves precise matching between the oxygen output process and equipment operating conditions, reducing system energy consumption, but also prevents outside air from entering the flow channel during standby, further ensuring oxygen purity upon re-output, making it particularly suitable for medical scenarios with stringent oxygen purity requirements. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of the present invention. Figure 1 ;

[0021] Figure 2 This is a schematic diagram of the overall structure of the present invention. Figure 2 ;

[0022] Figure 3 This is an exploded structural diagram of the present invention. Detailed Implementation

[0023] The technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application are within the scope of protection of this application.

[0024] In the description of this application, 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. 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 drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0025] It should be noted that the terms "first," "second," etc., used in the specification and claims of this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such use of data can be interchanged where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first," "second," etc., are generally of the same class and are not limited in number; for example, a first object can be one or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0026] It should be noted that in the description of this application, the directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application 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. Therefore, they should not be construed as limiting the scope of protection of this application. The directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0027] It should be noted that, in this application, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element. Furthermore, it should be noted that the scope of the methods and apparatuses in the embodiments of this application is not limited to performing functions in the order shown or discussed, but may also include performing functions substantially simultaneously or in the reverse order, depending on the functions involved. For example, the described methods may be performed in a different order than described, and various steps may be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.

[0028] Example 1: This example provides an oxygen generator oxygen output system, including an oxygen input module, an oxygen output module, an oxygen flow regulation module, and an oxygen flow path self-cleaning module. The oxygen input module is the core functional module for oxygen introduction. It has a single-opening first medium channel integrally formed along the axial direction. The inner wall of the channel is precision polished to ensure minimal resistance during oxygen flow. The oxygen output module is the functional module for centralized oxygen output. It also has a single-opening second medium channel constructed along the axial direction. The inner diameter of the second medium channel matches the inner diameter of the first medium channel to ensure stable pressure during oxygen flow. The opening end of the first medium channel faces away from the oxygen output module and serves as the only oxygen input port. The opening end of the second medium channel faces away from the oxygen input module and serves as the only oxygen output port. The opening directions of the two channels are strictly opposite to avoid intersection or interference of oxygen flow paths.

[0029] The oxygen flow control module is configured as an intermediate execution unit connecting the oxygen input module and the oxygen output module. It has a hollow cylindrical structure and integrates a fluid control element with on / off control function through precision assembly. This fluid control element is a valve. The valve core is made of wear-resistant ceramic material, and the valve seat is made of fluororubber sealing structure to ensure good sealing performance even after long-term on / off switching. The inlet end of the valve is precisely connected to the outlet end of the first medium channel, and the outlet end is precisely connected to the inlet end of the second medium channel to establish a selective connection between the first and second medium channels, thereby realizing the on / off control of oxygen flow.

[0030] The oxygen flow path self-cleaning module forms a complete flow path connection with the oxygen input module, oxygen flow control module, and oxygen output module. It includes a clean gas storage tank, a high-pressure delivery pump, a distribution pipeline, and electromagnetic switching valves. The clean gas storage tank stores dried and filtered inert clean gas. The input end of the high-pressure delivery pump is connected to the storage tank, and its output end is sealed to the inlet end of the first medium channel and the outlet end of the second medium channel via the distribution pipeline. Electromagnetic switching valves are installed at key nodes between the distribution pipeline and the main oxygen flow path. The self-cleaning module operates during oxygen generator downtime or at a preset cycle. Upon startup, it first activates through the electromagnetic switching valves. The main oxygen flow path is cut off, while the clean gas delivery path is opened. The high-pressure delivery pump is started to pressurize the clean gas to 0.3-0.5MPa. The pressurized clean gas flows into the first medium channel from the inlet end in the forward direction and into the second medium channel from the outlet end through the diversion pipeline. The inner wall of the first medium channel, the gap between the valve core and valve seat of the valve, and the inner wall of the second medium channel are thoroughly purged and cleaned. The purging time is set to 10-30 seconds to ensure that the attached dust, small impurities and condensate are completely removed. This avoids the accumulation of impurities, which may reduce the cross-sectional area of ​​the channel and affect the oxygen flow efficiency, or the mixing of condensate and oxygen, which may cause the humidity of the subsequent output oxygen to exceed the standard and contaminate the oxygen.

[0031] Through the coordinated operation of the above modules, a directional flow path is formed: "Oxygen input module → First medium channel → Fluid control element → Second medium channel → Oxygen output module". At the same time, a self-cleaning path is superimposed: "Clean gas storage tank → High-pressure delivery pump → Diversion pipeline → First medium channel / Second medium channel → Impurity discharge". This achieves the dual functions of dynamic oxygen distribution, on / off management, and long-term cleanliness of the flow path during the oxygen generator's oxygen output process.

[0032] In this embodiment, the oxygen flow control module adopts a distributed layout. According to the rated oxygen output requirement of the oxygen generator, at least two sets of oxygen flow control modules are configured. The two sets of oxygen flow control modules are respectively fixedly connected to the two end faces of the oxygen output module through a standardized connection structure. After connection, the central axis of the two sets of oxygen flow control modules is collinear with the central axis of the oxygen output module, and they are strictly symmetrically distributed about the central reference plane of the oxygen output module to ensure the overall system is under balanced force.

[0033] The number of oxygen input modules is perfectly matched with the number of oxygen flow control modules, that is, one set of oxygen flow control modules corresponds to one set of oxygen input modules. Each oxygen input module is fixedly connected to the side of the corresponding oxygen flow control module away from the oxygen output module through a sealed connection structure, forming a modular combination structure of "oxygen input module - oxygen flow control module - oxygen output module - oxygen flow control module - oxygen input module".

[0034] The core advantage of this modular structure lies in its flexible adaptability to oxygen concentrators with different rated oxygen output capacities: when the oxygen concentrator has a low rated oxygen output capacity, only one set of oxygen flow control module and one set of oxygen input module can be configured, forming a simplified single-input-single-output structure; when the oxygen concentrator has a high rated oxygen output capacity, the number of oxygen flow control module and oxygen input module combinations can be increased (e.g., three or four sets), and each set of modules is symmetrically distributed about the center of the oxygen output module, ensuring that oxygen from multiple input paths is evenly combined within the oxygen output module, avoiding excessively high local pressure or uneven flow. Simultaneously, this symmetrical modular layout ensures the balance of the overall system flow path, reduces airflow turbulence caused by component assembly deviations, and further improves oxygen flow stability.

[0035] In this embodiment, the oxygen flow control module achieves precise control of the oxygen flow authority between the first medium channel and the second medium channel by switching the state of its internal fluid control element. The control signal of the valve comes directly from the main control unit of the oxygen generator. The main control unit generates corresponding control commands according to the operating conditions of the oxygen generator (load operation, standby, flow regulation).

[0036] When the oxygen concentrator is in a load operation state (i.e., the user turns on the oxygen inhalation mode and the main control unit detects the oxygen demand signal), the main control unit sends a "conduction" command to the valve. The valve core moves to the maximum opening position under the action of the drive component (electromagnetic drive or motor drive), and the maximum flow gap is formed between the valve core and the valve seat. At this time, the fluid control element remains fully conductive, allowing oxygen to flow unidirectionally from the first medium channel through the valve's flow gap into the second medium channel. There is no additional resistance interference during the flow process, ensuring a stable oxygen output flow rate.

[0037] When the oxygen concentrator is in standby mode (the user has not activated the oxygen inhalation mode, and the main control unit has not detected any oxygen demand) or flow regulation mode (the user adjusts the oxygen inhalation flow rate via the control panel), the main control unit sends a "close" or "partially close" command to the valve according to a preset program: In standby mode, the valve core is fully fitted to the valve seat, and the sealing surfaces are in tight contact, blocking oxygen flow; during flow regulation, the valve core moves to the corresponding opening position, adjusting the oxygen flow rate by changing the size of the flow gap, achieving multi-level flow rate regulation from 0.5-5L / min. Through this dynamic control method, the oxygen concentrator's oxygen output process and operating conditions are precisely matched, meeting the flow rate requirements of different oxygen usage scenarios while avoiding oxygen waste during standby.

[0038] In this embodiment, an integrated mounting interface is integrally formed on the outer wall of the oxygen flow control module. The mounting interface is a mounting hole, which is a circular hole structure that penetrates the side wall of the oxygen flow control module radially. The inner wall is provided with an internal thread with a precision of 6H, which is used to adapt to standard fasteners such as bolts and screws.

[0039] The mounting holes precisely correspond to the preset mounting holes on the body support structure or internal fixed frame of the oxygen generator. During assembly, fasteners are passed through the mounting holes and tightened with the body structure to position and fix the oxygen flow control module in the preset mounting position. After fixing, the coaxiality error between the central axis of the oxygen flow control module and the preset installation reference line is ≤0.1mm.

[0040] The mounting holes are precisely designed to avoid the docking areas between the fluid control element and the first and second medium channels. Specifically, the distance from the docking end face is ≥10mm to prevent the structural design of the mounting interface from interfering with oxygen flow. At the same time, the number of mounting holes is set to at least two, and they are evenly distributed along the circumference of the oxygen flow control module. The central angle between two adjacent mounting holes is equal, ensuring that the oxygen flow control module is subjected to uniform force after the fasteners are installed. Through the structural limiting effect, it effectively prevents the oxygen flow control module from axial or radial displacement due to vibration during the operation of the oxygen generator, thereby ensuring the connection accuracy between the first medium channel, valve, and second medium channel and significantly reducing the risk of oxygen leakage.

[0041] In this embodiment, the oxygen input module and the oxygen flow control module, as well as the oxygen flow control module and the oxygen output module, all adopt a standardized fixed connection method. The connection method can be selected from any one of threaded connection, flange connection or snap-fit ​​connection according to actual assembly requirements, and all connection methods are equipped with a dedicated sealing structure.

[0042] If a threaded connection is used, the oxygen input module has an external thread section at the end near the oxygen flow control module, and the corresponding end of the oxygen flow control module has an internal thread hole. A PTFE sealing gasket with a thickness of 2-3mm is fitted at the threaded connection. After tightening, the gasket is compressed to form a sealing surface. If a flange connection is used, both mating ends have flanges with evenly distributed bolt holes. Bolts are passed through the bolt holes and nuts are tightened to achieve fixation. A rubber sealing gasket is sandwiched between the flanges, with the inner diameter of the gasket matching the inner diameter of the channel to avoid obstructing the oxygen flow path. If a snap-fit ​​connection is used, the oxygen flow control module end has an annular groove, and the oxygen input module end has elastic claws. The claws engage with the groove to form an interference fit, and a sealing ring is provided between the claws and the groove, achieving both quick assembly and sealing functions.

[0043] After all connections are completed, the relative positions of each module are checked using specialized tooling to ensure that the relative positions remain locked and there is no possibility of loosening or displacement. Further, the airtightness is verified by airtightness testing (introducing 0.6MPa compressed air, holding the pressure for 30 minutes, and the leakage rate ≤5ml / min) to ensure that the connection between the first medium channel and the valve, and the connection between the valve and the second medium channel, form a completely sealed connection. This avoids flow gaps caused by connection deviations, ensures lossless flow of oxygen from input to output, and maximizes the oxygen output efficiency of the system.

[0044] In this embodiment, the single opening of the first medium channel is configured as a dedicated oxygen input port. The opening specifications of the port (including inner diameter, outer diameter, and interface type) are precisely matched with the interface parameters of the oxygen source output end of the oxygen generator: if the oxygen source output end is a quick connector, the outer periphery of the input port is provided with a corresponding snap-fit ​​groove, the width and depth of which are perfectly matched with the size of the snap-fit ​​claw of the quick connector, and the claw automatically snaps into the groove for fixation after insertion; if the oxygen source output end is a threaded interface, the outer periphery of the input port is provided with a corresponding external thread, and the thread specification is consistent with the internal thread of the oxygen source interface.

[0045] The inner wall of the input port is provided with a 30°-45° inlet chamfer. The chamfer surface is smooth and burr-free, guiding oxygen to flow smoothly into the first medium channel and avoiding turbulence caused by airflow impact. At the same time, there are no additional openings or branches at the port, ensuring that oxygen can only be introduced through this port and that there are no other leakage paths that would cause oxygen to overflow.

[0046] The second medium channel has a single opening configured as a dedicated oxygen output port. Its opening specifications are precisely matched with the interface parameters of the oxygen-using end of the oxygen generator (such as oxygen tubing, oxygen mask interface, ventilator docking interface, etc.): if the oxygen-using end is an internal thread interface, the output port is equipped with a corresponding external thread connector, and the length and pitch of the external thread connector are adapted to the oxygen-using end interface; if the oxygen-using end is a plug-in interface, the output port is equipped with an elastic sealing sleeve, which, after insertion, tightly fits against the inner wall of the oxygen-using end to achieve a seal.

[0047] The output port is equipped with an O-ring groove at its end, in which an O-ring made of nitrile rubber or fluororubber is installed. When connected to the oxygen-consuming end interface, the O-ring is compressed to form a reliable sealing surface, preventing oxygen from leaking from the connection gap. This ensures that oxygen regulated by the fluid control element can be directionally and losslessly delivered to the oxygen-consuming end through this port, achieving closed-loop oxygen distribution.

[0048] In this embodiment, the materials of the oxygen input module, oxygen output module, and oxygen flow control module have all undergone rigorous screening to fully meet the requirements for the use of oxygen media. Specifically, inert materials with excellent resistance to oxygen corrosion and no harmful substances are used, preferably 316L stainless steel or polytetrafluoroethylene, or semiconductor-grade inert materials with excellent chemical stability (purity ≥99.999%) such as high-purity selenium, selenium dioxide, and gallium arsenide. These materials not only have no reactivity with oxygen, but also will not undergo oxidation aging or release harmful substances in long-term contact with high-purity oxygen environments. This avoids chemical reactions between the materials and oxygen that could affect oxygen purity, and also ensures that each module maintains structural stability during long-term use, preventing deformation or damage to the flow channels due to material aging.

[0049] 316L stainless steel has extremely strong corrosion resistance, especially good compatibility with high-purity oxygen. It will not oxidize or rust after long-term contact with oxygen, and the material itself does not release heavy metals or other harmful substances, so it will not affect the purity of oxygen. Polytetrafluoroethylene has excellent chemical stability and does not react with oxygen. It also has good wear resistance and sealing properties, making it suitable for oxygen circulation scenarios with extremely high cleanliness requirements.

[0050] By selecting the aforementioned inert materials, on the one hand, the chemical reaction between the materials and oxygen can be avoided, which would lead to a decrease in oxygen purity and ensure that the output oxygen meets the standards for medical or industrial oxygen. On the other hand, it can ensure that each module maintains structural stability in an environment where it is in contact with oxygen for a long time, and will not cause deformation, damage or sealing failure of the flow channel due to material aging or corrosion, thereby extending the service life of the entire oxygen output system and reducing maintenance costs.

[0051] Example 2: This example is a physical structure of Example 1, specifically an oxygen generator oxygen outlet valve, including a third component 3 as the main structure of the oxygen outlet valve. The third component 3 is a cylindrical valve body, manufactured using an integrated molding process, with high structural strength and good sealing performance. The third component 3 has an integrated valve 31 with on / off function along the axial direction. The valve 31 is the core functional element of the oxygen outlet valve. Its inlet end corresponds to the outlet end of the first flow channel 10 of the oxygen generator (located inside the first component 1), and its outlet end corresponds to the inlet end of the second flow channel 20 of the oxygen generator (located inside the second component 2). It is used to establish a selective connection between the first flow channel 10 and the second flow channel 20 to control the on / off state and flow rate of oxygen.

[0052] One end face of the third component 3 is fixedly connected to the second component 2 of the oxygen concentrator through a standardized fixed connection structure (threaded connection, flange connection, or snap-fit ​​connection). After connection, the relative positions of the third component 3 and the second component 2 are locked, and the outlet end of the valve 31 is precisely aligned with the inlet end of the second flow channel 20. The other end face of the third component 3 is also fixedly connected to the first component 1 of the oxygen concentrator through a fixed connection structure of the same specification. After connection, the inlet end of the valve 31 is precisely aligned with the outlet end of the first flow channel 10, ensuring a smooth oxygen flow path.

[0053] Furthermore, both the first flow channel 10 and the second flow channel 20 are single-opening structures. The opening end of the first flow channel 10 faces away from the third component 3, and the opening end of the second flow channel 20 faces away from the third component 3. The opening directions of the two are arranged in strict opposite directions to avoid backflow or interference during oxygen flow, so as to realize the directional flow of oxygen from the first flow channel 10 through the valve 31 to the second flow channel 20.

[0054] In this embodiment, an installation hole 30 is integrally formed radially on one side outer sidewall of the third component 3. The installation hole 30 is a hole-like structure that penetrates the sidewall of the third component 3. Its inner diameter is determined according to the size of the fasteners of the oxygen generator body fixing structure, usually a standard hole diameter of M4-M8. The inner wall is provided with an internal thread with a precision of 6H, which is used to form a reliable threaded connection with fasteners such as bolts and screws.

[0055] The diameter of the mounting hole 30 is precisely matched with the size parameters of the fastener, that is, the pitch and tooth profile of the internal thread are completely matched with the external thread of the fastener, ensuring that the fastener will not loosen or strip after being screwed in; the number of mounting holes 30 is set to at least one, preferably two, and they are symmetrically distributed about the axis of the third component 3 to ensure that the third component 3 is subjected to balanced force after fixing.

[0056] Furthermore, its placement is precisely planned to avoid the docking area between valve 31 and the first flow channel 10 and the second flow channel 20. This avoids the structural design of the mounting hole 30 affecting the installation accuracy of valve 31 and prevents the fasteners from interfering with the oxygen flow path after installation. After fixing the third component 3 to the preset installation position of the oxygen generator through the mounting hole 30, the radial runout of the third component 3 is measured with a dial indicator and is ≤0.05mm. This ensures the structural stability of the third component 3 after it is fixed, thereby guaranteeing the docking accuracy between valve 31 and the first flow channel 10 and the second flow channel 20, and avoiding oxygen leakage or increased flow resistance due to docking deviation.

[0057] In this embodiment, the two ends of the oxygen generator's oxygen outlet valve 31 are respectively connected to the first flow channel 10 and the second flow channel 20 through a sealing docking structure: the inlet end of the valve 31 is provided with an annular sealing groove, and a fluororubber sealing ring is installed in the groove to form an end face seal with the outlet end of the first flow channel 10; the outlet end of the valve 31 adopts the same sealing docking design to form an end face seal with the inlet end of the second flow channel 20. Through the sealing docking of the two ends, a complete and sealed oxygen flow path is formed.

[0058] When the main control unit of the oxygen concentrator receives an oxygen delivery command triggered by the user (such as pressing the oxygen inhalation start button or remotely sending an oxygen delivery signal), the main control unit sends a conduction signal to the drive component of valve 31. The drive component (electromagnetic coil or micro motor) starts and drives the valve core to move along the axial direction, causing the valve core to separate from the valve seat and form a flow gap. At this time, valve 31 switches to the conduction state. Under the pressure of the oxygen source of the oxygen concentrator, oxygen flows in from the opening end of the first flow channel 10, is delivered to the inlet end of valve 31 through the first flow channel 10, flows into the interior of valve 31 through the flow gap of valve 31, and finally flows out from the outlet end of valve 31 to the second flow channel 20, and is discharged from the opening end of the second flow channel 20 to the oxygen consumption end.

[0059] When the main control unit of the oxygen concentrator receives a user-triggered stop command (such as pressing the stop button, the end of the oxygen inhalation time, or detection of oxygen disconnection), the main control unit sends a closing signal to the actuator of valve 31. The actuator drives the valve core to move in the opposite direction until the valve core and valve seat are fully engaged and the sealing surfaces are in tight contact. At this point, valve 31 switches to the closed state, completely cutting off the oxygen flow path and stopping oxygen output. Through this precise on / off control of valve 31, the oxygen outlet valve achieves the core regulatory function of the oxygen distribution process of the oxygen concentrator, ensuring that oxygen output starts and stops as needed, meeting oxygen demand while avoiding oxygen waste.

[0060] The embodiments of this application have been described above with reference to the accompanying drawings. Unless otherwise specified, the embodiments and features in the embodiments of this application can be combined with each other. This application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of this application without departing from the spirit and scope of the claims, and all of these forms are within the protection scope of this application.

Claims

1. An oxygen outlet system of an oxygen generator, characterized in that, The oxygen input module, the oxygen output module, the oxygen flow regulation module, and the oxygen flow path self-cleaning module are included. The single-opening first medium channel is constructed in the oxygen input module. The single-opening second medium channel is constructed in the oxygen output module. The opening directions of the first medium channel and the second medium channel are arranged in reverse. The oxygen flow regulation module is configured as an intermediate execution unit connected between the oxygen input module and the oxygen output module. The oxygen flow regulation module is internally integrated with a fluid control element with on-off control function. The fluid control element is used to establish a selective communication relationship between the first medium channel and the second medium channel. The oxygen flow path self-cleaning module is in communication with the oxygen input module, the oxygen flow regulation module, and the oxygen output module. The oxygen flow path self-cleaning module is used to transport cleaning gas into the first medium channel, the fluid control element, and the second medium channel during the shutdown gap or the preset period of the oxygen generator to blow and clean the impurities and condensed water attached to the inner wall of the flow path, avoid the accumulation of impurities affecting the oxygen flow efficiency or contaminating the subsequent output oxygen, and form a directional flow path from the oxygen input module to the fluid control element to the oxygen output module to realize the dynamic distribution and on-off management of oxygen during the oxygen output process of the oxygen generator. The oxygen flow regulation module adopts a distributed layout. At least two groups of oxygen flow regulation modules are respectively connected with two ends of the oxygen output module. Each group of oxygen flow regulation modules is symmetrically distributed about the center reference of the oxygen output module. The number of oxygen input modules matches the number of oxygen flow regulation modules. Each oxygen input module is connected with the side of the corresponding oxygen flow regulation module away from the oxygen output module to form a modular combined structure. The modular combined structure can flexibly adjust the combination number of the oxygen input module and the oxygen flow regulation module based on the rated oxygen output demand of the oxygen generator while ensuring the balance and stability of the overall flow path of the system. The oxygen flow regulation module realizes the regulation of the oxygen flow permission between the first medium channel and the second medium channel through the state switching of the internal fluid control element. When the oxygen generator is in a load running state, the fluid control element remains in a conduction state to allow oxygen to flow from the first medium channel to the second medium channel through the fluid control element in one direction. When the oxygen generator is in a standby or flow regulation state, the fluid control element can be switched to a closed state according to a preset instruction to block the oxygen flow. Through dynamic regulation, the oxygen output process and operating conditions of the oxygen generator are accurately matched.

2. The oxygen generator oxygen outlet system of claim 1, wherein, The integrated mounting interface is arranged on the outside of the oxygen flow regulation module. The integrated mounting interface is adaptively connected with the body bearing structure or the internal fixed frame of the oxygen generator to position and fix the oxygen flow regulation module at a preset mounting position. The integrated mounting interface is arranged at a position away from the docking area of the fluid control element and the medium channel to avoid interference with the oxygen flow. At the same time, through the structure limiting effect, the oxygen flow regulation module is prevented from being displaced due to vibration during the operation of the oxygen generator to ensure the communication precision between the first medium channel, the fluid control element, and the second medium channel and reduce the risk of oxygen leakage.

3. The oxygen generator oxygen outlet system of claim 1, wherein, The oxygen input module is connected with the oxygen flow regulation module in a standardized and fixed manner, and the relative positions of the modules are locked after connection, ensuring that the first medium channel, the connecting end of the fluid control element, and the connecting end of the fluid control element and the second medium channel form a sealed communication, avoiding flow gaps due to misalignment, ensuring lossless flow from input to output, and improving the oxygen output efficiency of the system.

4. The oxygen generator oxygen outlet system of claim 1, wherein, The single opening of the first medium channel is configured as an oxygen exclusive input port, and the opening specification matches the interface parameters of the oxygen source output end of the oxygen generator, ensuring that oxygen can be efficiently introduced into the first medium channel through the oxygen exclusive input port, and that no additional openings cause oxygen overflow. The single opening of the second medium channel is configured as an oxygen exclusive output port, and the opening specification matches the interface parameters of the oxygen end of the oxygen generator, ensuring that the oxygen regulated by the fluid control element can be directed to the oxygen end through the oxygen exclusive output port, realizing closed-loop distribution of oxygen.

5. The oxygen generator oxygen outlet system of claim 1, wherein, The materials of the oxygen input module, the oxygen output module, and the oxygen flow regulation module meet the use requirements of oxygen medium, and inert materials with anti-oxygen corrosion performance and no harmful substance precipitation characteristics are used to avoid chemical reaction between the material and oxygen affecting the oxygen purity, while ensuring the structural stability of each module in a long-term oxygen environment, preventing deformation or damage of the flow channel due to material aging.

6. An oxygen outlet valve of an oxygen generator, applied to the oxygen outlet system of the oxygen generator in any one of claims 1-5, characterized in that, The third component, which is the main structure of the oxygen outlet valve, has a valve (31) with on-off function integrated inside. The valve (31) is used to establish a selective communication relationship between the first flow channel (10) and the second flow channel (20) of the oxygen generator. One side of the third component is fixedly connected with the second component (2) of the oxygen generator, and the other side is fixedly connected with the first component (1) of the oxygen generator. The first flow channel (10) and the second flow channel (20) are both single-opening structures, and their opening directions are arranged in opposite directions to realize directional flow of oxygen from the first flow channel (10) to the second flow channel (20) through the valve (31).

7. The oxygen outlet valve of claim 6, wherein, One side of the third component is provided with a mounting hole (30), which is a hole-shaped structure penetrating through the side wall of the third component. The mounting hole (30) is used to pass through a fastener to fix the third component to a predetermined mounting position of the oxygen generator. The hole diameter specification of the mounting hole (30) matches the size parameters of the fastener, and its setting position avoids the connection area of the valve (31) and the flow channel, ensuring the structural stability of the third component after fixation, avoiding interference with the oxygen flow path, and ensuring the connection accuracy of the valve (31) and the first flow channel (10) and the second flow channel (20).

8. The oxygen outlet valve of claim 7, wherein, The two ends of the valve (31) are respectively in corresponding communication with the first flow passage (10) and the second flow passage (20), and form a complete oxygen flow path. When the oxygen generator triggers an oxygen instruction, the valve (31) is switched to a conduction state, oxygen can flow from the first flow passage (10) into the valve (31), and then flow into the second flow passage (20) through the valve (31). When the oxygen generator triggers a stop oxygen instruction, the valve (31) is switched to a closed state, and the oxygen flow path is cut off. Through the on-off control of the valve (31), the core regulation and control function of the oxygen outlet valve on the oxygen distribution process of the oxygen generator is realized.

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