Gas control valve module, molecular sieve module and portable oxygen generator

Abstract

The application provides a gas control valve module, a molecular sieve module and a portable oxygen generator, the gas control valve module comprising a molecular sieve support plate, the molecular sieve support plate having an assembly side, the molecular sieve support plate being provided with a combined vent hole; a control valve, the control valve having an inner end face for docking a gas path and an outer end face opposite to the inner end face, the inner end face of the control valve being arranged on the assembly side of the molecular sieve support plate and being docked with the combined vent hole; a protection support plate, the protection support plate being arranged on the assembly side of the molecular sieve support plate; the protection support plate being arranged in abutment with the control valve; at least a part of the protection support plate extending beyond the outer contour line of the control valve relative to the assembly side of the molecular sieve support plate to form a protruding part, so as to reduce the possibility of the control valve being dislocated and loosened when the portable oxygen generator encounters bumps and collisions. When directly colliding, the protection support plate can provide a buffering and protection effect.

Description

Technical Field

[0001] This utility model belongs to the field of oxygen production technology. Specifically, this utility model relates to a gas control valve module, a molecular sieve module, and a portable oxygen generator for a portable oxygen generator. Background Technology

[0002] Oxygen concentrators are commonly used equipment in modern medical technology centers and are widely used in medical facilities such as hospitals, emergency centers, and geriatric wards. With the gradual development and integration of medical technology and humanistic care, there is a trend towards miniaturization and portability of oxygen concentrators, so that users can use them at home or when they are out and about, rather than having to use them only in hospitals and nursing homes.

[0003] The technology behind oxygen concentrators is relatively mature. They typically consist of a compressor, gas tank, adsorption tank, and valve body, using solenoid valves to control the gas path and achieve functions such as air adsorption, oxygen storage, and oxygen supply. In oxygen concentrators, the solenoid valve and valve body are key functional components. With the trend towards miniaturization and portability in oxygen concentrators, their internal structure has become more compact, with closer proximity between the outer casing and internal components. This design trend has impacted the safety and stability of internal components. During assembly, handling, and transportation, collisions and bumps can cause damage to components such as the solenoid valve and valve body, leading to misalignment or damage and severely affecting the performance of the oxygen concentrator.

[0004] In the existing technology, there is a lack of structural design to protect solenoid valves, and it is necessary to improve and optimize this. Utility Model Content

[0005] This invention provides a new technical solution for a gas control valve module, a molecular sieve module, and a portable oxygen generator.

[0006] According to a first aspect of the present invention, a gas control valve module for a portable oxygen concentrator is provided, comprising:

[0007] A molecular sieve support plate, the molecular sieve support plate having an assembly side, and the molecular sieve support plate being provided with combined ventilation holes;

[0008] A control valve having an inner end face for connecting to a gas passage and an outer end face opposite to the inner end face, the inner end face of the control valve being disposed on the assembly side of the molecular sieve support plate and connecting to the combined vent hole.

[0009] A protective support plate is disposed on the assembly side of the molecular sieve support plate; the protective support plate is disposed in contact with the control valve;

[0010] Relative to the mounting side of the molecular sieve support plate, at least a portion of the protective support plate extends beyond the outer contour of the control valve to form a protrusion.

[0011] Optionally, the protective support plate is vertically disposed on the molecular sieve support plate.

[0012] Optionally, the control valve is a gas distribution valve for supplying and venting gas to and from the molecular sieve in the oxygen generator.

[0013] Optionally, the system includes two control valves, which are respectively disposed on both sides of the protective support plate.

[0014] Optionally, the protrusion extends beyond the outer end face of the control valve.

[0015] Optionally, the protrusion extends beyond the solenoid valve terminal of the control valve.

[0016] Optionally, the molecular sieve support plate includes an end plate and a valve body plate;

[0017] The valve body plate is disposed on one side of the end plate, and the side of the end plate on which the valve body plate is disposed is the assembly side of the molecular sieve support plate.

[0018] The end plate is configured to cover the mating surface of the molecular sieve;

[0019] The combined vent is provided on the end plate and the valve body plate;

[0020] A slotted area is formed on the valve body plate, and the slotted area and the protective support plate together limit the movement of the control valve.

[0021] Optionally, the gas control valve module includes a protective bracket, the protective support plate is formed on the protective bracket, and the protective bracket is disposed on the assembly side of the molecular sieve support plate;

[0022] The protective bracket is fixedly connected to the end plate. A bearing portion is formed on the protective bracket. The bearing portion is flush with the slot area. The inner end face of the control valve covers the slot area and the bearing portion.

[0023] Optionally, the supporting part abuts against the valve body plate.

[0024] Optionally, the protective bracket has a connecting rod, which is fixedly connected to the end plate, and the connecting rod is spaced apart from the bearing part, and a mounting groove is formed on the connecting rod;

[0025] The control valve includes a solenoid valve body and a solenoid valve terminal. The solenoid valve body covers the slot area and the support portion, and the solenoid valve terminal extends to the mounting slot.

[0026] Optionally, the connecting rod extends along a direction perpendicular to the protective support plate and extends to both sides of the protective support plate, and the connecting rod has the mounting groove formed on both sides of the protective support plate;

[0027] The protective bracket has the bearing portion formed on both sides of the protective support plate.

[0028] Optionally, multiple limiting strips are provided at intervals on both sides of the protective support plate, and the limiting strips abut against the control valve.

[0029] According to a second aspect of the present invention, a molecular sieve module for a portable oxygen generator is provided, comprising:

[0030] A molecular sieve cylinder having a mating surface and an air inlet port on the mating surface;

[0031] In the gas control valve module described in the first aspect, the side of the molecular sieve support plate opposite to the assembly side is the docking side, the docking side of the molecular sieve support plate is fixedly covered on the docking surface of the molecular sieve, and the air inlet interface is docked with the combined vent hole.

[0032] According to a third aspect of this utility model, a portable oxygen concentrator is provided, comprising:

[0033] An oxygen generator body, the oxygen generator body having a frame structure and a molecular sieve chamber formed in the frame structure;

[0034] In the second aspect, the molecular sieve module has the molecular sieve cylinder inserted into the molecular sieve chamber, and the molecular sieve support plate fixedly connected to the frame structure.

[0035] The gas control valve module for a portable oxygen concentrator provided by this utility model offers a molecular sieve support plate for the control valve's mounting and includes a protective support plate to reduce the possibility of misalignment or loosening of the control valve when the portable oxygen concentrator encounters bumps or collisions. The protective support plate protrudes from the control valve, providing cushioning and protection in the event of a direct impact.

[0036] Other features and advantages of the present invention will become clear from the following detailed description of exemplary embodiments of the present invention with reference to the accompanying drawings. Attached Figure Description

[0037] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments of the present invention and, together with their description, serve to explain the principles of the present invention.

[0038] Figure 1 This is an internal schematic diagram of a portable oxygen concentrator provided in one embodiment of the present invention;

[0039] Figure 2 for Figure 1 A magnified view of a portion of the image;

[0040] Figure 3 A schematic diagram of a gas control valve module provided in one embodiment of the present invention;

[0041] Figure 4 A schematic diagram of a gas control valve module (excluding the control valve) provided for one embodiment of the present invention;

[0042] Figure 5 A schematic diagram of a molecular sieve support plate for a gas control valve module provided in one embodiment of this utility model;

[0043] Figure 6 A schematic diagram of an end plate of a gas control valve module provided in one embodiment of this utility model;

[0044] Figure 7 A schematic diagram of the internal airflow path of a molecular sieve support plate for a gas control valve module provided in one embodiment of this utility model;

[0045] Figure 8 This is a schematic diagram of the cooperation between a protective bracket and a protective support plate for a gas control valve module according to one embodiment of the present invention.

[0046] Wherein: A0, Gas control valve module; A1, Molecular sieve support plate; A11, First air inlet; A12, Second air inlet; A13, End plate; A131, First through hole; A132, Second through hole; A14, Valve body plate; A141, Slot area; A142, First edge; A143, Second edge; A144, Air inlet channel; A1441, First air inlet section; A1442, Second air inlet section; A145, Exhaust channel; A1451, First exhaust section; A1452, Second exhaust section; A15, First switching hole; A16, First exhaust hole; A17, Second switching hole; A18, Second exhaust hole;

[0047] A2, Protective bracket; A21, Connecting rod; A210, Mounting slot; A211, First mounting slot; A212, Second mounting slot; A23, Bearing component;

[0048] A22, Protective support plate; A221, Limiting strip; A222, Protrusion;

[0049] A3, Control valve; A301, Solenoid valve body; A302, Solenoid valve terminal; A31, First control valve; A311, First valve body; A312, First adapter; A32, Second control valve; A321, Second valve body; A322, Second adapter;

[0050] 400. Molecular sieve cylinder. Detailed Implementation

[0051] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that, unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps set forth in these embodiments do not limit the scope of the present invention.

[0052] The embodiments of this application will now be described in detail, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0053] The terms "first" and "second" in the specification and claims of this application may explicitly or implicitly include one or more of the features. In the description of this application, unless otherwise stated, "multiple" means two or more. Furthermore, "and / or" in the specification and claims indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0054] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0055] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0056] It should be noted that similar labels and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be discussed further in subsequent figures.

[0057] See Figure 1 and Figure 2 This application provides a gas control valve module for a portable oxygen concentrator, the gas control valve module A0 comprising:

[0058] Molecular sieve support plate A1, molecular sieve support plate A1 has an assembly side, and combined ventilation holes are provided on molecular sieve support plate A1.

[0059] Control valve A3 has an inner end face for connecting to the gas passage and an outer end face opposite to the inner end face. The inner end face of control valve A3 is located on the assembly side of molecular sieve support plate A1 and connects to the combined vent hole.

[0060] Protective support plate A22 is installed on the assembly side of molecular sieve support plate A1; protective support plate A22 is abutting against control valve A3;

[0061] Relative to the mounting side of the molecular sieve support plate A1, at least a portion of the protective support plate A22 extends beyond the outer contour of the control valve A3 to form a protrusion A222.

[0062] In the above embodiments, the molecular sieve support plate A1 can be a flat plate or a plate-like structure close to a flat plate. The two sides of the molecular sieve support plate A1 can be the assembly side and the docking side, respectively. The assembly side of the molecular sieve support plate A1 can be used to assemble components such as the control valve A3 and the protective support plate A22. The docking side of the molecular sieve support plate A1 can be matched with the molecular sieve cylinder 400.

[0063] See Figure 5 and Figure 6The combined vent on the molecular sieve support plate A1 connects the assembly side and the docking side of the molecular sieve support plate A1 to facilitate the intake and exhaust of the molecular sieve cylinder 400. Furthermore, by providing the combined vent, the gas path can be connected to the inner end face of the control valve A3, ensuring the gas path connectivity required for the oxygen generator's oxygenation function. In addition, the rigid structure of the molecular sieve support plate A1 stably supports the control valve A3, preventing gas path connection failure due to overall module deformation and ensuring the overall structural stability of the gas control valve module A0.

[0064] The surface of control valve A3 closest to the assembly side of molecular sieve support plate A1 can be considered its inner end face, while the surface of control valve A3 furthest from the assembly side of molecular sieve support plate A1 can be considered its outer end face. Control valve A3 connects to the combined vent hole of molecular sieve support plate A1 via its inner end face, enabling precise control of the gas path by solenoid valves or pneumatic valves, such as controlling air adsorption and nitrogen release, thus ensuring the oxygen production efficiency of the oxygen generator.

[0065] See Figure 1 , Figure 2 and Figure 4 The protective support plate A22 can be a flat plate structure or have a raised part of the surface but be a flat plate structure overall. The surface of the protective support plate A22 connected between the inner end face and the outer end face can abut against the control valve A3. The protective support plate A22, together with the assembly side of the molecular sieve support plate A1, forms a fixed structure for the control valve A3. The control valve A3 is abutted in this fixed structure, which can reduce the risk of displacement of the control valve A3 due to vibration or collision, ensure the reliability of the oxygen generator gas circuit switching, and help to realize the compact setting of the miniaturized oxygen generator.

[0066] It is worth noting that the protective support plate A22 is installed on the assembly side of the molecular sieve support plate A1. The protective support plate A22 can be directly installed on the assembly side of the molecular sieve support plate A1, or it can be indirectly installed on the assembly side of the molecular sieve support plate A1 through other components. Both methods can ensure the stability of the control valve A3.

[0067] See Figures 1 to 4 The outer contour of control valve A3 can be the contour of control valve A3 away from the assembly side of molecular sieve support plate A1, that is, the contour of the outer end face of control valve A3; at least a part of the protective support plate A22 extends beyond the outer contour of control valve A3 and forms a protrusion A222. When control valve A3 is subjected to external impact, the protrusion A222, as a buffer structure, can withstand the impact force before control valve A3, thereby dispersing or absorbing the impact energy, avoiding direct force on control valve A3, thereby reducing the risk of damage to control valve A3 or failure of gas circuit connection, and significantly improving the impact resistance of gas control valve module A0 under compact structure.

[0068] The gas control valve module A0 for a portable oxygen concentrator provided in this application embodiment provides a molecular sieve support plate A1 for supporting the control valve A3, and designs a protective support plate A22 to provide protection, reducing the possibility of misalignment or loosening of the control valve A3 when the portable oxygen concentrator encounters bumps or collisions. The protective support plate A22 protrudes from the control valve A3, and can provide buffering and protection in the event of a direct collision.

[0069] In some embodiments, see Figure 4 The protective support plate A22 is vertically installed on the molecular sieve support plate A1.

[0070] In the above embodiments, when the protective support plate A22 abuts against the control valve A3, the protective support plate A22 is vertically set on the molecular sieve support plate A1 to form an "L-shaped" or "right-angled" support structure, which enhances the fixing strength of the control valve A3 on the assembly side of the molecular sieve support plate A1, prevents the control valve A3 from loosening or misaligning in the vertical direction (such as the bottom impact when the oxygen generator falls) and the horizontal direction (such as the side collision), and ensures the assembly stability of the control valve A3.

[0071] In some embodiments, control valve A3 is a gas distribution valve for supplying and venting gas to and from the molecular sieve in the oxygen generator. By connecting the inner end face of control valve A3 with the combined vent hole of the molecular sieve support plate A1, the supply of compressed air to the molecular sieve (such as air intake during the pressurized adsorption stage) and the venting of nitrogen from the molecular sieve (such as venting during the depressurized desorption stage) are precisely controlled, thereby realizing the efficient oxygen production function of the molecular sieve.

[0072] In some embodiments, control valve A3 is a pressure equalization valve used to achieve pressure balance of the molecular sieves in the oxygen generator. The inner end face of control valve A3 is connected to the combined vent hole of molecular sieve support plate A1, which can precisely control the gas flow sequence in the two molecular sieves. For example, after the pressure adsorption stage of one molecular sieve is completed, a high-pressure molecular sieve is formed, and after the decompression desorption stage of the other molecular sieve is completed, a low-pressure molecular sieve is formed. At this time, the pressure equalization valve is opened to allow the high-pressure molecular sieve to exhaust gas to the low-pressure molecular sieve, thereby achieving pressure balance. This improves the pressure balance efficiency during the molecular sieve switching process, reduces energy consumption, and also reduces noise.

[0073] In some embodiments, see Figure 1 and Figure 2 The gas control valve module A0 includes two control valves A3, which are respectively located on both sides of the protective support plate A22.

[0074] In the above embodiment, the two control valves A3 can control the air intake and exhaust sequence of the two molecular sieves respectively, so as to alternately complete the pressure balance of the adsorption-desorption stage and improve the operating efficiency of the oxygen generator.

[0075] See Figure 1 and Figure 2 By having a protective support plate A22 simultaneously abut against the control valves on both sides, the stability of the two control valves on the molecular sieve support plate assembly side can be enhanced. While simplifying the structure, it prevents the control valves from loosening, misaligning or tilting due to vibration or collision, and ensures the sealing of the multi-air circuit connection.

[0076] In some embodiments, see Figures 1 to 3 At least one protrusion A222 extends beyond the outer end face of the control valve A3. For example, the protrusion A222 includes a first protrusion that extends beyond the outer end face of the control valve A3.

[0077] In the above embodiment, the surface of control valve A3 closest to the assembly side of molecular sieve support plate A1 can be the inner end face of control valve A3, and the surface of control valve A3 furthest from the assembly side of molecular sieve support plate A1 can be the outer end face of control valve A3. Protective support plate A22 extends from the inner end face of control valve A3 to the outer end face of control valve A3, and the protrusion A222 protrudes beyond the outer end face of control valve A3, further expanding the protection range of control valve A3 provided by protective support plate A222. The protrusion A222 can preferentially withstand lateral impacts from outside the module, thereby guiding the impact force to protective support plate A22 and molecular sieve support plate A1, preventing direct force on the outer end face of control valve and gas connection points, thus reducing the risk of loosening of control valve components and gas leakage, and ensuring the functional integrity of control valve in multi-gas-path collaborative operation.

[0078] In some embodiments, see Figures 1 to 3 At least one protrusion A222 extends beyond the solenoid valve terminal of the control valve A3, for example, protrusion A222 includes a second protrusion that extends beyond the solenoid valve terminal of the control valve A3.

[0079] In the above embodiments, the control valve A3 can be connected to the electronic control component through the solenoid valve terminal at its upper or lower part. The protrusion A222 extends beyond the solenoid valve terminal of the control valve A3, and the protrusion A222 can protect the solenoid valve terminal of the control valve A3, preventing the solenoid valve terminal of the control valve A3 from being directly subjected to external impact.

[0080] Furthermore, by cooperating with the protrusion A222 extending beyond the outer end face of the control valve A3 and the protrusion A222 extending beyond the solenoid valve terminal of the control valve A3, the protection range of the protrusion A222 is extended beyond the outer end face of the control valve and the solenoid valve terminal, forming a multi-faceted or even fully enclosed protective structure. When the gas control valve module suffers an external impact, the protective support plate can preferentially withstand the impact force from multiple directions and disperse the energy to the molecular sieve support plate through a rigid structure, avoiding direct force on the control valve and reducing the risk of gas connection leakage or internal structural damage.

[0081] In some embodiments, see Figure 5 and Figure 6 The molecular sieve support plate A1 includes an end plate A13 and a valve body plate A14;

[0082] Valve body plate A14 is located on one side of end plate A13, and the side of end plate A13 on which valve body plate A14 is located is the assembly side of molecular sieve support plate A1.

[0083] End plate A13 is configured to cover the mating surface of the molecular sieve;

[0084] The combined vent is located on end plate A13 and valve body plate A14;

[0085] A groove area A141 is formed on the valve body plate A14. The groove area A141 and the protective support plate A22 together limit the control valve A3.

[0086] In the above embodiment, by decomposing the molecular sieve support plate A1 into an end plate A13 and a valve body plate A14, the molecular sieve support plate A1 is functionally partitioned. The mating side of the molecular sieve support plate A1 on the end plate A13 is used to mate with the mating surface of the molecular sieve. The end plate A13 is directly covered on the mating surface of the molecular sieve, ensuring the sealing between the molecular sieve and the molecular sieve support plate A1. The valve body plate A14 on the mounting side of the end plate A13 is used to control the installation of the valve and the connection with the gas path, reducing the processing complexity of the molecular sieve support plate A1 and facilitating the maintenance or replacement of the molecular sieve support plate A1.

[0087] See Figure 5 The slot area A141 formed on the valve body plate A14 works together with the protective support plate A22 to limit the control valve A3 on both sides, preventing the control valve from sliding or tilting due to vibration or collision, thus improving the assembly stability and vibration resistance of the control valve.

[0088] In some embodiments, see Figure 5The slot area A141 has a first edge A142 and a second edge A143. The first control valve A31 includes a first valve body A311, which is engaged between the first edge A142 and one side of the protective support plate A22. The second control valve A32 includes a second valve body A321, which is engaged between the second edge A143 and the other side of the protective support plate A22.

[0089] In the above embodiment, the first air inlet A11 and the second air inlet A12 are positioned in the slot area A141, allowing the control valve A3 to directly correspond to the two air inlets. This facilitates precise control of the air intake and makes the airflow channel more compact, which is beneficial for the miniaturization design of the gas control valve module. The first edge A142 and the second edge A143 provide positioning for the control valve A3, clearly defining its installation position within the slot area A141. This ensures the relative positional accuracy between the control valve A3 and the air inlets, thereby ensuring that the control valve A3 can effectively control the opening and closing of the air inlets, thus achieving precise airflow regulation.

[0090] See Figure 3 and Figure 5 The first valve body A311 is snapped between the first edge A142 and one side of the protective support plate A22, ensuring that the first control valve A31 is securely fixed in the gas control valve module. This prevents loosening or displacement due to vibration or external force during oxygen generator operation, guaranteeing the stability and reliability of the first control valve A31. Simultaneously, by snapping the second control valve A32 between the second edge A143 and the other side of the protective support plate A22, the second control valve A32 can be stably installed in the gas control valve module. The second control valve A32 cooperates with the first control valve A31, and the protective support plate A22 separates the first valve body A311 and the second valve body A321, enabling independent control of the two air inlets. Furthermore, the snap-fit ​​method facilitates the maintenance and replacement of the control valves, reducing maintenance costs and time.

[0091] In some embodiments, see Figures 5 to 7 The valve body plate A14 has a first switching hole A15 and a first exhaust hole A16. The first air inlet hole A11, the first switching hole A15 and the first exhaust hole A16 are arranged in sequence at intervals. The first switching hole A15 can be connected to the molecular sieve cylinder 400 through the first through hole A131 of the end plate A13.

[0092] When the gas control valve module is in the intake state, the first control valve A31 can control the first intake port A11 and the first switching port A15 to be open, so that air can enter through the first switching port A15. At this time, the first exhaust port A16 and the first switching port A15 are disconnected. When the gas control valve module is in the exhaust state, the first control valve A31 can control the first exhaust port A16 and the first switching port A15 to be open, so that air can be exhausted through the first switching port A15. At this time, the first intake port A11 and the first switching port A15 are disconnected.

[0093] In the above embodiment, the first air inlet A11, the first switching port A15, and the first exhaust port A16 are arranged linearly at intervals to facilitate communication between the first switching port A15 and either the first air inlet A11 or the first exhaust port A16. Specifically, the first switching port A15 is used to switch the gas flow direction under different operating conditions, realizing the conversion between air intake and exhaust functions, while the first exhaust port A16 is used to discharge nitrogen from the molecular sieve cylinder 400, improving the separation efficiency of oxygen and nitrogen and ensuring the normal operation of the oxygen generator.

[0094] During the intake phase, the first control valve A31 precisely controls the opening of the first intake port A11 and the first switching port A15, allowing external gas to enter through the first intake port A11. The gas then passes through the first switching port A15 and the first through hole A131 of the end plate A13 into the molecular sieve cylinder 400 for oxygen production. Simultaneously, the first control valve A31 controls the opening of the first exhaust port A16 and the first switching port A15, preventing gas from escaping through the first exhaust port A16 and ensuring that all gas enters the molecular sieve cylinder 400, thus improving both intake efficiency and oxygen production efficiency.

[0095] During exhaust, the first control valve A31 switches the control mode, opening the first exhaust port A16 and the first switching port A15. The separated nitrogen gas inside the molecular sieve cylinder 400 can then be discharged from the gas control valve module through the first switching port A15 and the first exhaust port A16. Simultaneously, the first control valve A31 disconnects the first inlet port A11 and the first switching port A15 to prevent external gas from entering, ensuring a smooth exhaust process and timely discharge of nitrogen gas from the molecular sieve cylinder 400. This prepares for the next oxygen intake cycle and maintains the normal operation of the oxygen generator.

[0096] In some embodiments, see Figures 5 to 7 The valve body plate A14 has a second switching hole A17 and a second exhaust hole A18. The second air inlet hole A12, the second switching hole A17 and the second exhaust hole A18 are arranged in sequence at intervals. The second switching hole A17 can be connected to the molecular sieve cylinder 400 through the second through hole A132 of the end plate A13.

[0097] When the gas control valve module is in the intake state, the second control valve A32 can control the second intake port A12 and the second switching port A17 to be open, so that air can enter through the second switching port A17. At this time, the second exhaust port A18 and the second switching port A17 are disconnected. When the gas control valve module is in the exhaust state, the second control valve A32 can control the second exhaust port A18 and the second switching port A17 to be open, so that air can be exhausted through the second switching port A17. At this time, the second intake port A12 and the second switching port A17 are disconnected.

[0098] In some embodiments, the second air inlet A12, the second switching port A17, and the second exhaust port A18 are arranged linearly at intervals to allow the second switching port A17 to communicate with either the second air inlet A12 or the second exhaust port A18. The second switching port A17 is used to switch the gas flow direction under different operating conditions, realizing the conversion between air intake and exhaust functions; the second exhaust port A18 is used to discharge nitrogen gas, ensuring that the gas can be smoothly discharged from the gas control valve module in the exhaust state. The second switching port A17 and the second exhaust port A18, together with the first switching port A15 and the first exhaust port A16, improve the oxygen generation efficiency of the oxygen generator.

[0099] In the intake state, the second control valve A32 precisely controls the opening of the second intake port A12 and the second switching port A17, allowing external gas to enter through the second intake port A12. After passing through the second switching port A17, the gas enters the molecular sieve cylinder 400 through the second through hole A132 of the end plate A13 for oxygen production. Simultaneously, the second control valve A32 controls the opening of the second exhaust port A18 and the second switching port A17, preventing gas from escaping through the second exhaust port A18 and ensuring that gas can effectively enter the molecular sieve cylinder 400, thus improving intake efficiency and oxygen production efficiency. The control functions of the second control valve A32 and the first control valve A31 in the intake state work together to achieve flexible intake and exhaust of the oxygen generator, improving its oxygen production capacity.

[0100] During exhaust, the second control valve A32 switches its control mode, opening the second exhaust port A18 and the second switching port A17. Nitrogen gas separated within the molecular sieve cylinder 400 can then be discharged from the gas control valve module through the second switching port A17 and the second exhaust port A18. Simultaneously, the second control valve A32 disconnects the second air inlet port A12 and the second switching port A17 to prevent external gas from entering, ensuring a smooth exhaust process and preparing for the next oxygen generation cycle, thus maintaining the normal operation of the oxygen generator.

[0101] See Figure 7 The valve body plate A14 has an intake channel A144 and an exhaust channel A145. The intake channel A144 is connected to the first intake port A11 and the second intake port A12, and the exhaust channel A145 is connected to the first exhaust port A16 and the second exhaust port A18.

[0102] In the above embodiment, the intake channel A144 connects the first intake port A11 and the second intake port A12. After entering the intake channel A144, external gas can enter the gas control valve module through the first intake port A11 and the second intake port A12 respectively, increasing the independence of the intake channel and the intake flow rate, and improving the intake efficiency. The exhaust channel A145 connects to the first exhaust port A16 and the second exhaust port A18, enabling the collection and discharge of nitrogen gas generated after processing by the molecular sieve cylinder 400. During oxygen production, the molecular sieve cylinder 400 separates waste gases such as nitrogen. The exhaust channel A145 gathers the nitrogen gas discharged from the first exhaust port A16 and the second exhaust port A18 together, forming a concentrated nitrogen gas flow, facilitating the discharge of nitrogen gas from the gas control valve module and ensuring the continuity and stability of the oxygen production process.

[0103] In some embodiments, see Figure 5 The intake passage A144 includes a first intake section A1441 and a second intake section A1442 that are perpendicular to each other, and the exhaust passage A145 includes a first exhaust section A1451 and a second exhaust section A1452 that are perpendicular to each other.

[0104] One end of the first intake section A1441 has an air inlet, and the other end of the first intake section A1441 is connected to the second intake section A1442. One end of the first exhaust section A1451 has an exhaust port, and the other end of the first exhaust section A1451 is connected to the second exhaust section A1452. The first intake section A1441 and the first exhaust section A1451 are parallel to each other.

[0105] The second intake section A1442 is connected to the first intake port A11 and the second intake port A12, and the second exhaust section A1452 is connected to the first exhaust port A16 and the second exhaust port A18 and is arranged vertically parallel to the second intake section A1442.

[0106] In the above embodiment, the first intake section A1441 and the second intake section A1442 are perpendicular to each other, allowing the intake channel A144 to better adapt to the internal spatial structure of the valve body plate A14, improving space utilization and making the overall structure of the oxygen generator more compact. Furthermore, the first intake section A1441 can buffer and initially guide the gas, allowing it to enter the second intake section A1442 at a suitable speed, and then evenly distribute it to the first intake port A11 and the second intake port A12, improving intake efficiency and the uniformity of gas distribution.

[0107] See Figure 5The first exhaust section A1451 and the second exhaust section A1452 are perpendicular to each other. The second exhaust section A1452 can quickly collect the separated nitrogen gas and then discharge the nitrogen gas through the first exhaust section A1451, thereby reducing the accumulation time of nitrogen gas in the molecular sieve cylinder 400 and improving the exhaust efficiency.

[0108] See Figure 3 The air inlet is connected to the outlet of the compression assembly, allowing the compressed gas to effectively enter the first air inlet section A1441. The connection between the first air inlet section A1441 and the second air inlet section A1442 ensures that the gas flows along a predetermined path, providing a stable airflow supply for the oxygen production process. Simultaneously, the exhaust port is directly connected to the outside. Through the connection between the first exhaust section A1451 and the second exhaust section A1452, nitrogen generated by the molecular sieve cylinder 400 can be smoothly discharged from the exhaust port, preventing nitrogen accumulation inside the oxygen generator and thus avoiding impact on oxygen production efficiency.

[0109] See Figure 5 The first intake section A1441 and the first exhaust section A1451 are parallel to each other, which can make full use of the space of the valve body plate A14, reduce mutual interference between the intake and exhaust airflows, ensure the independence and stability of the intake and exhaust processes, and simplify the layout of the intake and exhaust channels. The second intake section A1442 and the second exhaust section A1452 are arranged vertically parallel to each other, which can separate the intake and exhaust airflows in space, reduce mutual interference, and improve the overall integration and performance of the oxygen concentrator.

[0110] In some embodiments, see Figure 2 and Figure 8 The gas control valve module includes a protective bracket A2, a protective support plate A22 formed on the protective bracket A2, and the protective bracket A2 is arranged on the assembly side of the molecular sieve support plate A1.

[0111] The protective bracket A2 is fixedly connected to the end plate A13. A bearing part A23 is formed on the protective bracket A2. The bearing part A23 is flush with the slot area A141. The inner end face of the control valve A3 is covered on the slot area A141 and the bearing part A23.

[0112] In the above embodiments, the protective bracket A2 serves as an integrated carrier for the protective support plate A22 and the load-bearing part A23, reducing the use of additional components, optimizing space utilization, and adapting to the miniaturization requirements of portable oxygen concentrators. Furthermore, by being fixedly connected to the end plate A13, the protective bracket A2 enhances the rigidity of the assembly side of the molecular sieve support plate A1, reducing local deformation of the molecular sieve support plate A1 due to vibration or collision, and ensuring the stability of the control valve A3 and the gas circuit connection.

[0113] See Figure 4 and Figure 8The bottom surface of the bearing part A23 is flush with the bottom surface of the slot area A141. The bearing part A23 and the valve body plate A14 can abut against each other, or the bearing part A23 and the valve body plate A14 can be in clearance fit. In either case, the bearing part A23 and the slot area A141 together can provide a flat support surface for the inner end face of the control valve A3. While ensuring the load-bearing stability of the control valve A3, it also ensures the sealed connection between the inner end face of the control valve and the combined vent hole, eliminating the gap caused by uneven mounting surface and improving the sealing performance of the air circuit.

[0114] In one embodiment, the molecular sieve support plate A1 has a first air inlet A11 and a second air inlet A12 on its assembly side. The control valve A3 includes a first control valve A31 and a second control valve A32. The first control valve A31 is used to control the opening and closing of the first air inlet A11, and the second control valve A32 is used to control the opening and closing of the second air inlet A12.

[0115] In the above embodiments, see Figure 4 The first air inlet A11 and the second air inlet A12 are formed on the assembly side of the molecular sieve support plate A1, creating a channel for external gas to enter the molecular sieve cylinder 400 through the gas control valve module A0, ensuring the air intake requirements of the molecular sieve cylinder 400. Simultaneously, the molecular sieve support plate A1 is fixed to the mating surface of the molecular sieve cylinder 400, allowing the gas control valve module A0 and the molecular sieve cylinder 400 to be tightly integrated, forming a complete oxygen-generating flow channel. Airflow enters through the first air inlet A11 and the second air inlet A12 on the assembly side of the molecular sieve support plate A1, and then enters the molecular sieve cylinder 400 from the mating side of the molecular sieve support plate A1. This ensures that the gas entering through the air inlets can smoothly enter the molecular sieve cylinder 400 for subsequent oxygen generation and separation processes, enhancing the overall integrity and stability of the entire oxygen generator's internal structure.

[0116] See Figure 2In this embodiment, the protective bracket A2 is connected to the molecular sieve support plate A1 to construct the frame structure of the gas control valve module A0, allowing the protective bracket A2 and the molecular sieve support plate A1 to be integrated in an orderly manner, providing structural support for the subsequent installation of control valves and other components. Furthermore, the first and second mounting cavities separated by the protective bracket A22 provide independent installation spaces for the first control valve A31 and the second control valve A32 in the control valve A3, respectively. The independent spaces formed by the first and second mounting cavities not only facilitate the installation and layout of the control valve A3, preventing interference between the first control valve A31 and the second control valve A32, but also provide physical protection for the first control valve A31 and the second control valve A32. During transportation, when encountering external forces such as compression, the mounting cavities can buffer the external forces, preventing the first control valve A31 and the second control valve A32 from being directly impacted and shaking, thereby effectively preventing gas leakage caused by shaking of the first control valve A31 and the second control valve A32, ensuring the normal operation and oxygen production efficiency of the gas control valve module A0.

[0117] In the above embodiments, by controlling the on / off states of the first control valve A31 and the second control valve A32 respectively, independent control of the first air inlet A11 and the second air inlet A12 can be achieved, thereby meeting the requirements of the oxygen generator for air intake rate and air intake flow under different operating conditions, and improving the performance and adaptability of the oxygen generator.

[0118] In some embodiments, see Figure 4 The bearing part A23 abuts against the valve body plate A14.

[0119] In the above embodiment, the support portion A23 directly abuts against the valve body plate A14, forming a single unit between the protective bracket A2 and the valve body plate A14. This reduces bending deformation of the valve body plate A14 due to the weight of the control valve A3 or external impacts, maintains the shape accuracy of the slot area A141, and thus ensures the limiting effect of the control valve A3. Furthermore, by simultaneously covering both the slot area A141 and the support portion A23, the inner end face of the control valve A3 achieves a precise sealing connection between the control valve A3 and the combined vent hole, reducing the risk of leakage due to installation errors or vibration.

[0120] In some embodiments, see Figure 4 and Figure 8 The protective bracket A2 has a connecting rod A21, which is fixedly connected to the end plate A13. The connecting rod A21 and the bearing part A23 are arranged at intervals, and the connecting rod A21 has an installation groove A210 formed on it.

[0121] See Figure 1 and Figure 2The control valve A3 includes a solenoid valve body A301 and a solenoid valve terminal A302. The solenoid valve body A301 covers the slot area A141 and the support part A23, and the solenoid valve terminal A302 extends to the mounting slot A210.

[0122] In the above embodiment, the connecting rod A21 is fixedly connected to the end plate A13, so that the protective bracket A2 is stably set on the assembly side of the molecular sieve support plate A1; moreover, the connecting rod A21 and the bearing part A23 are arranged at intervals to form an I-shaped protective bracket A2, which enhances the rigidity of the overall structure of the gas control valve module.

[0123] See Figure 8 The mounting slot A210 constrains the movement of the solenoid valve terminal A302 by matching its shape. While providing space for the solenoid valve terminal A302, it prevents the solenoid valve terminal A302 from shifting or tilting due to vibration of the oxygen generator or external impact, thereby reducing the risk of terminal breakage, loosening or short circuit.

[0124] See Figure 1 and Figure 2 The solenoid valve body A301, while snapping into the slot area A141, is supported by the bearing part A23, achieving a precise sealing connection between the solenoid valve body A301 and the combined vent hole, reducing the risk of leakage due to installation errors or vibration. The solenoid valve terminal A302 extends to the mounting groove A210. Through the fixation and protection of the mounting groove, damage to the terminal caused by collision, pulling, or vibration is avoided, ensuring the stability of the solenoid valve's signal transmission.

[0125] In some embodiments, see Figure 4 and Figure 8 The connecting rod A21 extends along a direction perpendicular to the protective support plate A22 and extends to both sides of the protective support plate A22. The connecting rod A21 has a mounting groove A210 on both sides of the protective support plate A22.

[0126] The protective bracket A2 has a load-bearing part A23 on both sides of the protective support plate A22.

[0127] In the above embodiment, the connecting rod A21 extends perpendicularly to the protective support plate A22, forming a cross-shaped support structure through a vertical intersecting design. This enhances the overall rigidity of the protective bracket A2, allowing the connecting rod A21 and the protective support plate A22 to support each other under stress. This effectively disperses external impact forces, reduces the risk of deformation or breakage of the protective bracket A2 due to stress, and ensures the stability of the connection between the control valve A3 and the air circuit. Furthermore, the vertically arranged connecting rod A21 and protective support plate A22 make full use of three-dimensional space, facilitating the installation and fixation of the protective bracket A2.

[0128] See Figure 8The mounting grooves A210 on both sides of the protective support plate A22 of the connecting rod A21 are respectively the first mounting groove A211 and the second mounting groove A212. The two control valves A3 on both sides of the protective support plate A22 can be respectively the first control valve A31 and the second control valve A32. The first control valve A31 includes a first adapter A312, which is assembled in the first mounting groove A211. The second control valve A32 includes a second adapter A322, which is assembled in the second mounting groove A212. The first mounting groove A211 and the second mounting groove A212 provide clear positioning references for the installation of the first adapter A312 and the second adapter A322, respectively.

[0129] During installation, operators can accurately place the control valve adapters into the corresponding mounting slots, avoiding problems such as component interference and poor sealing caused by inaccurate installation positions, thus improving installation accuracy and efficiency. Furthermore, the first mounting slot A211 and the second mounting slot A212, in conjunction with the protective support plate A22, ensure a tight fit between the first adapter A312 and the second adapter A322 and the connecting rod A21, increasing the stability of the adapter installation.

[0130] See Figure 8 In this embodiment, the first mounting groove A211 and the second mounting groove A212 are arranged on both sides of the protective support plate A22, so that the first adapter A312 and the second adapter A322 can be located on both sides of the protective support plate A22 respectively, so as to make full use of the internal space of the oxygen generator, make the layout between various components more compact, and facilitate the miniaturization and integration of the oxygen generator equipment.

[0131] In the above embodiment, the bearing portions A23 on both sides of the protective support plate A22 of the protective bracket A2 can respectively support the first valve body A311 of the first control valve A31 and the second valve body A321 of the second control valve A32. The first adapter A312 enables electrical connection between the first control valve A31 and the control board in the oxygen generator, facilitating signal transmission and control. When the first valve body A311 is engaged between the first edge A142 and one side of the protective bracket A2, the first adapter A312 is fixed by the first mounting groove A211, ensuring relative fixation between the first adapter A312 and the first valve body A311, thus achieving stable installation of the first control valve A31. In this embodiment, the second adapter A322 ensures that the second control valve A32 accurately receives and responds to control signals. When the second valve body A321 is engaged between the second edge A143 and the other side of the protective bracket A2, the second adapter A322 is fixed by the second mounting groove A212, ensuring the relative fixation of the second adapter A322 and the second valve body A321.

[0132] In some embodiments, see Figure 8 Multiple limit strips A221 are provided at intervals on both sides of the protective support plate A22, and the limit strips A221 abut against the control valve A3.

[0133] In the above embodiment, multiple limiting strips A221 are spaced apart on both sides of the protective support plate A22. The limiting strips A221 increase the structural strength of the protective support plate A22, preventing stress concentration. Furthermore, the limiting strips A221 on one side of the protective support plate A22 abut against the first control valve A31, both positioning the first control valve A31 and effectively limiting its swaying and displacement. Similarly, the limiting strips A221 on the other side of the protective support plate A22 abut against the second control valve A32, both positioning the second control valve A32 and effectively limiting its swaying and displacement.

[0134] In this embodiment, the multiple limiting strips A221 on both sides of the protective support plate A22 are in close contact with the control valve A3. The limiting strips A221 can provide sufficient restraint to keep the control valve A3 in a stable position, thereby ensuring and improving the reliability and stability of the oxygen generator equipment.

[0135] See Figure 1 and Figure 2 This application provides a molecular sieve module for a portable oxygen concentrator. The molecular sieve module includes:

[0136] Molecular sieve cylinder 400 has a mating surface and an air inlet on the mating surface;

[0137] The gas control valve module A0 mentioned above has a mating side on the molecular sieve support plate A1 opposite to the assembly side. The mating side of the molecular sieve support plate A1 is fixedly covered on the mating surface of the molecular sieve cylinder 400, and the air inlet interface and the combined vent hole are mated together.

[0138] In the above embodiments, the molecular sieve cylinder 400 can selectively adsorb nitrogen and release oxygen through the internal zeolite molecular sieve material, ensuring oxygen production efficiency. The air inlet on the mating surface of the molecular sieve cylinder 400 is precisely aligned with the combined vent of the gas control valve module, achieving efficient operation of the adsorption-desorption cycle. The mating side of the molecular sieve support plate A1 is covered on the mating surface of the molecular sieve cylinder 400 by a planar seal or sealing ring structure to prevent gas leakage from the gap between the mating surfaces, ensuring the efficiency of the adsorption and desorption cycle.

[0139] This application provides a portable oxygen concentrator, which includes:

[0140] The main body of the oxygen generator has a frame structure and a molecular sieve chamber formed in the frame structure;

[0141] In the aforementioned molecular sieve module, the molecular sieve cylinder 400 is inserted into the molecular sieve chamber, and the molecular sieve support plate A1 is fixedly connected to the frame structure.

[0142] In the above embodiments, the frame structure provides a stable mounting reference for components such as the compressor and molecular sieve module, and also resists external impacts. The molecular sieve chamber provides space for the molecular sieve module, and the shape-matching limiting structure enables rapid positioning and fixation of the molecular sieve module, balancing the portability requirements of the oxygen concentrator with functional stability.

[0143] Although specific embodiments of the present invention have been described in detail by way of examples, those skilled in the art should understand that the above examples are for illustrative purposes only and are not intended to limit the scope of the present invention. Those skilled in the art should understand that modifications can be made to the above embodiments without departing from the scope and spirit of the present invention. The scope of the present invention is defined by the appended claims.

Claims

1. A gas control valve module for a portable oxygen concentrator, characterized in that, include: A molecular sieve support plate (A1) has an assembly side and is provided with combined ventilation holes. A control valve (A3) has an inner end face for connecting to a gas passage and an outer end face opposite to the inner end face. The inner end face of the control valve (A3) is disposed on the assembly side of the molecular sieve support plate (A1) and connects to the combined vent hole. A protective support plate (A22) is disposed on the assembly side of the molecular sieve support plate (A1); the protective support plate (A22) is disposed in contact with the control valve (A3); Relative to the mounting side of the molecular sieve support plate (A1), at least a portion of the protective support plate (A22) extends beyond the outer contour of the control valve (A3) to form a protrusion (A222).

2. The gas control valve module according to claim 1, characterized in that, The protective support plate (A22) is vertically mounted on the molecular sieve support plate (A1).

3. The gas control valve module according to claim 2, characterized in that, The control valve (A3) is a gas distribution valve used to supply and exhaust gas to the molecular sieve in the oxygen generator.

4. The gas control valve module according to claim 3, characterized in that, It includes two control valves (A3), which are respectively disposed on both sides of the protective support plate (A22).

5. The gas control valve module according to claim 1, characterized in that, The protrusion (A222) extends beyond the outer end face of the control valve (A3).

6. The gas control valve module according to claim 1, characterized in that, The protrusion (A222) extends beyond the solenoid valve terminal of the control valve (A3).

7. The gas control valve module according to claim 1, characterized in that, The molecular sieve support plate (A1) includes an end plate (A13) and a valve body plate (A14); The valve body plate (A14) is disposed on one side of the end plate (A13), and the side of the end plate (A13) on which the valve body plate (A14) is disposed is the assembly side of the molecular sieve support plate (A1). The end plate (A13) is configured to cover the mating surface of the molecular sieve; The combined vent is provided on the end plate (A13) and the valve body plate (A14); A slot area (A141) is formed on the valve body plate (A14), and the slot area (A141) and the protective support plate (A22) together limit the control valve (A3).

8. The gas control valve module according to claim 7, characterized in that, The gas control valve module includes a protective bracket (A2), a protective support plate (A22) is formed on the protective bracket (A2), and the protective bracket (A2) is disposed on the assembly side of the molecular sieve support plate (A1); The protective bracket (A2) is fixedly connected to the end plate (A13). A bearing portion (A23) is formed on the protective bracket (A2). The bearing portion (A23) is flush with the slot area (A141). The inner end face of the control valve (A3) covers the slot area (A141) and the bearing portion (A23).

9. The gas control valve module according to claim 8, characterized in that, The bearing portion (A23) abuts against the valve body plate (A14).

10. The gas control valve module according to claim 8, characterized in that, The protective bracket (A2) has a connecting rod (A21), which is fixedly connected to the end plate (A13). The connecting rod (A21) is spaced apart from the bearing part (A23), and a mounting groove (A210) is formed on the connecting rod (A21). The control valve (A3) includes a solenoid valve body (A301) and a solenoid valve terminal (A302). The solenoid valve body (A301) covers the slot area (A141) and the support part (A23). The solenoid valve terminal (A302) extends to the mounting groove (A210).

11. The gas control valve module according to claim 10, characterized in that, The connecting rod (A21) extends along a direction perpendicular to the protective support plate (A22) and extends to both sides of the protective support plate (A22). The connecting rod (A21) has the mounting groove (A210) formed on both sides of the protective support plate (A22). The protective bracket (A2) has the bearing portion (A23) formed on both sides of the protective support plate (A22).

12. The gas control valve module according to claim 1, characterized in that, Multiple limiting strips (A221) are provided at intervals on both sides of the protective support plate (A22), and the limiting strips (A221) abut against the control valve (A3).

13. A molecular sieve module for a portable oxygen concentrator, characterized in that, include: Molecular sieve cylinder (400) has a mating surface, on which an air inlet is provided. ； The gas control valve module (A0) according to any one of claims 1 to 12, wherein the side of the molecular sieve support plate (A1) opposite to the assembly side is the docking side, the docking side of the molecular sieve support plate (A1) is fixedly covered on the docking surface of the molecular sieve, and the air inlet interface is docked with the combined vent hole.

14. A portable oxygen concentrator, characterized in that, include: An oxygen generator body, the oxygen generator body having a frame structure and a molecular sieve chamber formed in the frame structure; The molecular sieve module of claim 13, wherein the molecular sieve cylinder (400) is inserted into the molecular sieve chamber, and the molecular sieve support plate (A1) is fixedly connected to the frame structure.

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