Portable oxygen generation device with noise reduction function

Abstract

The invention discloses a portable oxygen generation device with a noise reduction function, and relates to the technical field of oxygen generators, the portable oxygen generation device comprises a shell, a noise reduction unit, a cleaning unit and an oxygen generation unit, the shell is used for mounting and fixing the noise reduction unit, the cleaning unit and the oxygen generation unit, the noise reduction unit is used for reducing noise generated in the device and noise generated by vibration, and the cleaning unit is used for cleaning the oxygen generation unit. The cleaning unit is used for filtering air and self-cleaning a filter plate, the oxygen generation unit is used for separating oxygen in the air, in the oxygen inhalation process of a user, the outside air is filtered through the cleaning unit of the device and then enters the oxygen generation unit to separate the oxygen from the air, and the oxygen is provided for the user; airflow noise generated in the working process of the device and noise generated by vibration are reduced through the noise reduction unit, and normal communication or rest of the user is prevented from being affected.

Description

Technical Field

[0001] This invention relates to the field of oxygen generator technology, specifically a portable oxygen generator with noise reduction function. Background Technology

[0002] With the advancement of modern medical technology and the increasing emphasis on health, portable oxygen generators are finding increasingly widespread applications in various fields such as home healthcare, high-altitude tourism, and outdoor sports. However, noise issues and the maintenance challenges of air filtration systems severely restrict product performance improvement and user experience optimization during their use.

[0003] When portable oxygen concentrators are in operation, their internal key components, such as compressors and fans, inevitably vibrate. This vibration propagates to the surrounding environment through the device's casing, connecting pipes, and other structural components, causing significant noise problems. Especially in relatively quiet indoor environments or situations requiring concentration, excessive noise can severely interfere with users, affecting rest, relaxation, and normal communication. It may even damage the user's hearing health due to prolonged exposure to noise.

[0004] Traditional portable oxygen generators generate noise due to vibrations during operation of their internal structure. Due to the lack of effective vibration reduction measures, a large amount of vibration energy from key components is still transmitted to the outside, resulting in very limited noise reduction and making it difficult to meet the increasingly stringent requirements of the operating environment. At the same time, the noise generated by the internal pulsation of airflow cannot be solved simultaneously.

[0005] Secondly, an air filtration system is an essential component to ensure that the oxygen generator can provide pure and safe oxygen. Its main function is to filter out tiny particulate impurities such as dust, pollen, bacteria, and viruses from the air before it enters the core oxygen generator components. Most existing portable oxygen generators use disposable paper or fiber filter plates as the key element of their air filtration.

[0006] Over time, a large amount of impurities accumulate on the filter plates, causing a sharp increase in their air resistance. This not only significantly reduces the air intake of the oxygen generator, lowering its efficiency and affecting the output and concentration stability of oxygen, but also forces components such as the compressor to increase their workload, further exacerbating vibration and noise problems, creating a vicious cycle. Furthermore, when the filter plates become clogged to a certain extent, airflow may be impeded, preventing the oxygen generator from functioning properly and potentially damaging internal components due to abnormal pressure. Summary of the Invention

[0007] The purpose of this invention is to provide a portable oxygen generator with noise reduction function to solve the problems mentioned in the prior art.

[0008] To achieve the above objectives, the present invention provides the following technical solution: The portable oxygen generator with noise reduction function includes a shell, a noise reduction unit, a cleaning unit, and an oxygen generation unit. The shell is placed on a horizontal base. The noise reduction unit is fixedly installed inside the shell. The cleaning unit is slidably connected to the noise reduction unit. The cleaning unit has the function of changing the noise reduction capability of the noise reduction unit. The cleaning unit is fixedly installed inside the shell and has a self-cleaning function. The oxygen generation unit is fixedly connected to the noise reduction unit and rotatably connected to the cleaning unit. The oxygen generation unit is fixedly installed inside the shell.

[0009] The outer casing is used to install and fix the noise reduction unit, cleaning unit, and oxygen generation unit. The noise reduction unit is used to reduce the noise generated inside the device and the noise caused by vibration. The cleaning unit is used for air filtration and self-cleaning of the filter plate. The oxygen generation unit is used for separating oxygen from the air. During the user's oxygen inhalation process, the outside air is filtered through the device's cleaning unit and then enters the oxygen generation unit to separate oxygen from the air and provide it to the user. The airflow noise and vibration noise generated during the device's operation are reduced by the noise reduction unit to avoid affecting the user's normal communication or rest.

[0010] Furthermore, the outer casing is equipped with a controller, a handle is provided at the end of the outer casing away from the horizontal foundation, heat dissipation holes are provided on the outer casing, control buttons are provided on the outer casing, a filter plate is provided on the outer casing, and an air intake is provided on the outer casing.

[0011] The controller starts the air compressor to provide oxygen to the user; the handle is for easy carrying; the heat dissipation vents are for dissipating internal heat when the air compressor is working to protect the internal mechanism; the control button is used to control the opening and closing of the oxygen outlet channel; and the filter disc is used for the initial filtration of external gas.

[0012] Furthermore, the noise reduction unit includes a flexible silencing platform, a push rod, a vertical plate, a fixed rod, a telescopic spring, a connecting rod, a slip ring, a vent pipe, a telescopic baffle, an electromagnet, a magnet, an electric telescopic rod, and a silencing plate. The flexible silencing platform is fixedly installed on the inner surface of the outer shell near the horizontal foundation. One end of the push rod is fixedly connected to the oxygen generation unit, and the other end is fixedly connected to the vertical plate near the flexible silencing platform. The vertical plate is rotatably installed on the fixed rod. Both ends of the fixed rod are fixedly connected to the inner walls of both sides of the outer shell. One end of the telescopic spring is fixedly connected to the vertical plate near the horizontal foundation, and the other end is fixedly connected to the inner surface of the outer shell near the horizontal foundation. One end of the connecting rod is rotatably connected to the vertical plate, and the other end is connected to... A slip ring is fixedly connected and slidably connected to the cleaning unit. One end of the ventilation pipe is fixedly connected to the oxygen generating unit, and the other end is slidably connected to the cleaning unit. There are multiple sets of telescopic baffles. In the vertical direction, multiple sets of telescopic baffles are fixedly installed on the inner walls of both sides of the ventilation pipe parallel to the vertical axis. An electromagnet is fixedly installed on one end of the telescopic baffle near the inner wall of the ventilation pipe. One end of the magnet is connected to the electromagnet through a spring, and the other end is fixedly installed on the telescopic part of the telescopic baffle. The electromagnet is electrically connected to the cleaning unit. The fixed end of the electric telescopic rod is fixedly installed on the inner wall of the outer shell. The telescopic end of the electric telescopic rod is fixedly connected to the sound-absorbing plate. The electric telescopic rod is electrically connected to the cleaning unit.

[0013] When the controller starts the air compressor, the air compressor will generate a combination of vertical and horizontal vibrations during operation, resulting in noise. When the air compressor vibrates vertically, the flexible silencing platform helps to eliminate the noise. As the air compressor moves downward, it pushes the push rod, causing the upright plate to rotate clockwise around the fixed rod and stretching the telescopic spring. When the air compressor vibrates upward, the telescopic spring contracts under its own restoring force, causing the upright plate to swing on the fixed rod. This, in turn, drives the slip ring to push the bent rod to rotate under the action of the connecting rod, thereby driving the cleaning unit to work.

[0014] Furthermore, the cleaning unit includes a bent rod, a filter cone, an inductor coil, a conductive rod, a guide post, a filter plate, a cleaning rod, and a magnetic block. One end of the bent rod is rotatably connected to the oxygen generation unit, and the other end passes through the filter cone and is fixedly connected to the filter plate. The bent rod is slidably connected to a slip ring. One end of the filter cone is slidably connected to the air pipe, and the other end is fixedly connected to the inner wall of the outer shell. A buffer spring is built into the end of the filter cone away from the air pipe. The inductor coil is uniformly fixedly installed on the outer surface of the filter cone and is electrically connected to an electromagnet. One end of the conductive rod is fixedly installed on the outer surface of the filter cone, and the other end is slidably installed on the guide post. The conductive rod is electrically connected to an electric telescopic rod. The guide post is fixedly installed on the inner wall of the outer shell, and a drive coil is uniformly wound on the surface of the guide post. The cleaning rod is fixedly installed on the inner wall of the outer shell, and multiple sets of bristles are provided on the side of the cleaning rod near the filter plate. The magnetic block is fixedly installed on the side of the filter plate near the cleaning rod.

[0015] As the bending rod rotates, it drives the filter plate to rotate inside the filter cone. When the air compressor vibrates left and right, its movement pushes the vent pipe, causing the filter cone to move. This movement simultaneously moves the conductive rod along the guide post. When the air compressor vibrates significantly, the conductive rod contacts the drive coil on the guide post. The effective number of turns in the drive coil gradually decreases, reducing its resistance. The current supplied to the conductive ring and finally to the electric telescopic rod gradually increases, causing the electric telescopic rod to extend a certain distance. This pushes the silencer plate to prevent large vibrations from the air compressor and absorb the generated noise, thus achieving noise reduction. Simultaneously, when the air compressor vibrates left and right, it pushes the bending rod, causing the filter plate to contact the cleaning rod. During the filter plate's rotation, its left and right movement contacts the bristles on the cleaning rod, which then rub against the filter plate surface. While cleaning the accumulated dust, the brush bristles clear clogged filter holes during the filter plate's movement, achieving self-cleaning and improving air filtration efficiency. This prevents clogging and ensures usability. Simultaneously, as the air compressor pushes the curved rod, moving the magnetic blocks on the filter plate left and right, the magnetic flux in the inductor coil changes. This generates positive and negative currents in the inductor coil, supplying them to the electromagnet. When the electromagnet receives a positive current, it exhibits the same polarity as the magnet, pushing the magnet to extend the telescopic baffle. When the electromagnet receives a reverse current, it exhibits the opposite polarity, pulling the magnet to retract the telescopic baffle. The extension and retraction of the baffle alters the gas flow, dividing the previously continuous noise propagation medium. When noise comes into contact with the baffle, it is reflected, scattered, and absorbed, effectively reducing noise propagation and achieving noise reduction.

[0016] Furthermore, the oxygen generating unit includes an air compressor, an intake branch pipe, a separator pipe, an outlet branch pipe, and a solenoid valve. The air compressor is rotatably connected to a bent rod and is placed on the surface of the flexible silencing platform away from the horizontal foundation. The air compressor inlet is fixedly connected to a ventilation pipe, and the end of the air compressor near the horizontal foundation is fixedly connected to a push rod. One end of the intake branch pipe is fixedly connected to the air compressor outlet, and the other end is conductively connected to one end of the separator pipe. The intake branch pipe is equipped with an exhaust pipe, and a solenoid valve is installed on the exhaust pipe of the intake branch pipe. The other end of the separator pipe is conductively connected to one end of the outlet branch pipe. A separator screen is placed inside the separator pipe. The other end of the outlet branch pipe is conductively connected to the outlet of the outer casing, and a solenoid valve is installed on the exhaust pipe of the outlet branch pipe.

[0017] When the air compressor draws in filtered air and compresses it, it delivers the air to the separator tube through the intake manifold. The separator screen blocks nitrogen in the air at the bottom of the separator tube, while oxygen passes through the separator screen and enters the outlet of the outer casing through the outlet manifold, making it convenient for users to inhale oxygen. When the separator screen in one separator tube is blocked, the opening and closing of the solenoid valve is controlled to allow oxygen to enter the other separator tube. The oxygen then flushes out the nitrogen inside the blocked separator tube and discharges it through the exhaust port, thus achieving recycling.

[0018] Furthermore, the multiple sets of telescopic baffles have different lengths, and the surfaces of the multiple sets of telescopic baffles are provided with multiple sets of recessed holes.

[0019] When continuous airflow passes through the ventilator, the varying lengths of the telescopic baffles cause different reflection and refraction paths as the airflow passes through them, thus dispersing the noise generated by the airflow. This dispersed noise is more perceptible than continuous noise of a single frequency, thereby reducing the perceived noise intensity. The multiple sets of concave holes on the surface of the telescopic baffles create vortices as the airflow passes through. When the airflow enters these concave holes, the spatial constraints and boundary conditions within the holes create small vortex structures. These vortex structures continuously interact with the surrounding airflow, generating friction and collisions, which dissipate the airflow's energy and further reduce noise.

[0020] Furthermore, the length ratio of the upright plate near the flexible anechoic platform to the upright plate away from the flexible anechoic platform is 1:4 to 1:10.

[0021] In order to amplify the vertical vibration amplitude of the air compressor, the connecting rod and slip ring push the bent rod to rotate, thereby causing the filter plate to rotate. When the air compressor vibrates left and right, the cleaning rod works in conjunction with the filter plate to achieve self-cleaning and improve the air filtration effect.

[0022] Furthermore, the ventilation pipe has a recessed portion in the middle that matches the shape of the bent rod.

[0023] To prevent interference during the rotation of the bending rod and thus avoid damage to the device, and to ensure the airflow direction of the vent pipe is optimized, the diameter of the central section decreases. When the pipe size changes, the size and frequency of the vortex in the airflow also change under the action of the telescopic baffle. This disperses the noise energy that was originally concentrated in a certain frequency band into multiple frequency bands. From the perspective of human hearing characteristics, this frequency dispersion reduces the sensitivity of the human ear to noise, thus achieving a certain noise reduction effect.

[0024] Furthermore, the end of the drive coil on the guide column furthest from the air compressor is the current input port.

[0025] In order to reduce the resistance of the drive coil on the guide column when the air compressor vibrates significantly from side to side, sufficient current can be provided to the electric telescopic rod to suppress the vibration of the air compressor, thereby reducing the noise caused by the vibration of the device.

[0026] Furthermore, the controller is electrically connected to the solenoid valve and to the drive coil on the guide column.

[0027] To achieve automated control and timely response of the device, the extension of the electric telescopic rod can be adjusted according to the amplitude of the left and right vibration of the air compressor, thereby effectively suppressing the vibration of the air compressor, reducing noise, and avoiding damage to other components caused by excessive vibration.

[0028] Compared with the prior art, the beneficial effects of the present invention are: 1. The present invention uses multiple sets of telescopic baffles of different lengths and with multiple sets of concave holes on their surfaces to disperse the noise generated by the airflow. At the same time, the space inside the concave holes causes the airflow to form small vortex structures inside the concave holes, which interact with the surrounding airflow, generating friction and collision, thereby consuming the energy of the airflow and further reducing the noise of the airflow.

[0029] 2. In this invention, when the air compressor vibrates vertically, it pushes the push rod, causing the upright plate to rotate clockwise around the fixed rod while simultaneously stretching the telescopic spring. When the air compressor vibrates upwards, the telescopic spring contracts under its own restoring force, causing the upright plate to swing on the fixed rod. This, in turn, drives the slip ring to rotate the bent rod under the action of the connecting rod. When the air compressor vibrates left and right, its movement pushes the vent pipe, causing the filter cone to move. Simultaneously, the contact between the conductive rod and the drive coil on the guide column causes the electric telescopic rod to extend a predetermined distance, pushing the silencer plate to prevent large vibrations from the air compressor and absorb the generated noise, thus achieving noise reduction. On the other hand, when the air compressor vibrates left and right, it pushes the curved rod to make the filter plate contact with the cleaning rod. The bristles clean the dust accumulated on the surface of the filter plate and remove the blocked filter holes, realizing the self-cleaning of the filter plate, thereby improving the air filtration efficiency and avoiding blockage that would affect its use. At the same time, as the magnetic block on the filter plate moves left and right, the magnetic flux in the inductor coil changes, thereby generating positive and negative currents in the inductor coil and supplying them to the electromagnet. This causes the electromagnet to be energized and present different polarities, pushing the magnet to move the telescopic baffle to extend and retract, changing the gas flow state and dividing the continuous noise propagation medium. When the noise comes into contact with the telescopic baffle, it is reflected, scattered, and absorbed, thereby effectively reducing the propagation of noise and achieving the purpose of noise reduction.

[0030] 3. In this invention, when the separation screen in one of the separation tubes is blocked, oxygen is allowed to enter the other separation tube by controlling the opening and closing of the solenoid valve. The oxygen then flushes out the nitrogen inside the blocked separation tube and discharges it through the exhaust port, thereby achieving recycling. Attached Figure Description

[0031] Figure 1 This is a schematic diagram of the overall appearance structure of a portable oxygen generator with noise reduction function according to the present invention. Figure 2 This is a top view structural schematic diagram of a portable oxygen generator with noise reduction function according to the present invention; Figure 3 This invention relates to a portable oxygen generator with noise reduction function. Figure 2 Cross-sectional view of section AA; Figure 4 This is a schematic diagram of the internal structure of the outer shell of a portable oxygen generator with noise reduction function according to the present invention. Figure 5 This invention relates to a portable oxygen generator with noise reduction function. Figure 4 A magnified view of the structure at point B in the middle; Figure 6 This is a schematic diagram of the internal appearance structure of the outer shell of a portable oxygen generator with noise reduction function according to the present invention from another perspective. Figure 7 This is a schematic diagram of the installation positions of the upright plate, telescopic spring, and connecting rod of a portable oxygen generator with noise reduction function according to the present invention. Figure 8 This invention relates to a portable oxygen generator with noise reduction function. Figure 7 A partial enlarged view of the structure at point C; Figure 9 This is a schematic diagram of the internal structure of the telescopic baffle of a portable oxygen generator with noise reduction function according to the present invention.

[0032] In the diagram: 1. Outer shell; 11. Controller; 12. Handle; 13. Heat dissipation vent; 14. Control button; 15. Filter plate; 2. Noise reduction unit; 21. Flexible silencing platform; 22. Push rod; 23. Vertical plate; 24. Fixing rod; 25. Telescopic spring; 26. Connecting rod; 27. Slip ring; 28. Vent pipe; 29. ​​Telescopic baffle; 210. Electromagnet; 211. Magnet; 212. Electric telescopic rod; 213. Silencer plate; 3. Cleaning unit; 31. Bent rod; 32. Filter cone; 33. Inductor coil; 34. Conductive rod; 35. Guide column; 36. Filter plate; 37. Cleaning rod; 38. Magnetic block; 4. Oxygen generating unit; 41. Air compressor; 42. Inlet branch pipe; 43. Separator pipe; 44. Outlet branch pipe; 45. Solenoid valve. Detailed Implementation

[0033] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0034] Example: Figures 1-9 As shown, the present invention provides a technical solution: like Figure 1 , 3 As shown, a portable oxygen generator with noise reduction function includes a shell 1, a noise reduction unit 2, a cleaning unit 3, and an oxygen generation unit 4. The shell 1 is placed on a horizontal base. The noise reduction unit 2 is fixedly installed inside the shell 1. The cleaning unit 3 is slidably connected to the noise reduction unit 2 and has the function of changing the noise reduction capability of the noise reduction unit 2. The cleaning unit 3 is fixedly installed inside the shell 1 and has a self-cleaning function. The oxygen generation unit 4 is fixedly connected to the noise reduction unit 2 and rotatably connected to the cleaning unit 3. The oxygen generation unit 4 is fixedly installed inside the shell 1.

[0035] The outer casing 1 is used for mounting and fixing the noise reduction unit 2, the cleaning unit 3 and the oxygen generation unit 4. The noise reduction unit 2 is used to reduce the noise generated inside the device and the noise caused by vibration. The cleaning unit 3 is used for air filtration and self-cleaning of the filter plate 36. The oxygen generation unit 4 is used for separating oxygen from the air. During the user's oxygen inhalation process, the outside air is filtered through the device's cleaning unit 3 and then enters the oxygen generation unit 4 to separate oxygen from the air and provide it to the user. The airflow noise and vibration noise generated during the device's operation are reduced by the noise reduction unit 2 to avoid affecting the user's normal communication or rest.

[0036] like Figure 1 As shown, the outer casing 1 is equipped with a controller 11, a handle 12 is provided at the end of the outer casing 1 away from the horizontal foundation, a heat dissipation hole 13 is provided on the outer casing 1, a control button 14 is provided on the outer casing 1, a filter plate 15 is provided on the outer casing 1, and an air intake is provided on the outer casing 1.

[0037] The controller 11 controls the start of the air compressor 41 to provide oxygen to the user. The handle 12 is for easy carrying by the user. The heat dissipation hole 13 is for dissipating internal heat when the air compressor 41 is working and protecting the internal mechanism. The control button 14 is used to control the opening and closing of the oxygen outlet channel. The filter plate 15 is used for the initial filtration of external gas.

[0038] like Figure 3 , 4As shown in Figures 5, 6, 7, 8, and 9, the noise reduction unit 2 includes a flexible silencing platform 21, a push rod 22, a vertical plate 23, a fixed rod 24, a telescopic spring 25, a connecting rod 26, a slip ring 27, a ventilation pipe 28, a telescopic baffle 29, an electromagnet 210, a magnet 211, an electric telescopic rod 212, and a silencing plate 213. The flexible silencing platform 21 is fixedly installed on the inner surface of the outer shell 1 near the horizontal foundation. One end of the push rod 22 is fixedly connected to the oxygen generating unit 4, and the other end is fixedly connected to the vertical plate 23 near the flexible silencing platform 21. The vertical plate 23 is rotatably installed on the fixed rod 24. Both ends of the fixed rod 24 are fixedly connected to the inner walls of both sides of the outer shell 1. One end of the telescopic spring 25 is fixedly connected to the vertical plate 23 near the horizontal foundation, and the other end is fixedly connected to the inner surface of the outer shell 1 near the horizontal foundation. One end of the connecting rod 26 is fixedly connected to the vertical plate 23 near the horizontal foundation. Plate 23 is rotatably connected, and the other end is fixedly connected to slip ring 27. Slip ring 27 is slidably connected to cleaning unit 3. One end of ventilation pipe 28 is fixedly connected to oxygen generating unit 4, and the other end is slidably connected to cleaning unit 3. There are multiple sets of telescopic baffles 29. In the vertical direction, multiple sets of telescopic baffles 29 are fixedly installed on the inner walls of both sides of ventilation pipe 28 parallel to the vertical axis. Electromagnet 210 is fixedly installed on one end of telescopic baffle 29 near the inner wall of ventilation pipe 28. One end of magnet 211 is connected to electromagnet 210 through spring, and the other end is fixedly installed on the telescopic part of telescopic baffle 29. Electromagnet 210 is electrically connected to cleaning unit 3. The fixed end of electric telescopic rod 212 is fixedly installed on the inner wall of outer shell 1. The telescopic end of electric telescopic rod 212 is fixedly connected to soundproof plate 213. Electric telescopic rod 212 is electrically connected to cleaning unit 3.

[0039] When the controller 11 starts the air compressor 41, the air compressor 41 will generate a combination of vertical and horizontal vibrations during operation, which will produce noise. When the air compressor 41 vibrates vertically, the noise generated by the vibration is eliminated by the flexible silencing platform 21. During the downward movement of the air compressor 41, the push rod 22 is pushed, which causes the upright plate 23 to rotate clockwise around the fixed rod 24 and stretch the telescopic spring 25. When the air compressor 41 vibrates upward, it contracts under the action of the self-restoring force of the telescopic spring 25, which causes the upright plate 23 to swing on the fixed rod 24. Under the action of the connecting rod 26, the slip ring 27 drives the bent rod 31 to rotate, thereby driving the cleaning unit 3 to work.

[0040] like Figure 5 , 8As shown, the cleaning unit 3 includes a bent rod 31, a filter cone 32, an inductor coil 33, a conductive rod 34, a guide post 35, a filter plate 36, a cleaning rod 37, and a magnetic block 38. One end of the bent rod 31 is rotatably connected to the oxygen generating unit 4, and the other end passes through the filter cone 32 and is fixedly connected to the filter plate 36. The bent rod 31 is slidably connected to the slip ring 27. One end of the filter cone 32 is slidably connected to the air pipe 28, and the other end is fixedly connected to the inner wall of the outer casing 1. A buffer spring is built into the end of the filter cone 32 away from the air pipe 28. The inductor coil 33 is evenly fixed in place. An inductor coil 33 is electrically connected to an electromagnet 210 and mounted on the outer surface of a filter cone 32. One end of a conductive rod 34 is fixedly mounted on the outer surface of the filter cone 32, and the other end is slidably mounted on a guide post 35. The conductive rod 34 is electrically connected to an electric telescopic rod 212. The guide post 35 is fixedly mounted on the inner wall of the outer casing 1. A drive coil is evenly wound on the surface of the guide post 35. A cleaning rod 37 is fixedly mounted on the inner wall of the outer casing 1. Multiple sets of bristles are provided on the side of the cleaning rod 37 near the filter plate 36. A magnetic block 38 is fixedly mounted on the side of the filter plate 36 near the cleaning rod 37.

[0041] As the bent rod 31 rotates, it drives the filter plate 36 to rotate within the filter cone 32. When the air compressor 41 vibrates left and right, its movement pushes the vent pipe 28, causing the filter cone 32 to move. Simultaneously, this movement drives the conductive rod 34 to move on the guide post 35. When the air compressor 41 vibrates significantly, the conductive rod 34 contacts the drive coil on the guide post 35. The effective number of turns in the drive coil gradually decreases, and the resistance gradually decreases. The current supplied to the conductive ring via the drive coil gradually increases, ultimately increasing the current supplied to the electric telescopic rod 212. This causes the electric telescopic rod 212 to extend a certain distance, pushing the silencer plate 213 to prevent large vibrations of the air compressor 41 and absorb the generated noise, thus achieving noise reduction. Furthermore, when the air compressor 41 vibrates left and right, it pushes the bent rod 31, causing the filter plate 36 to contact the cleaning rod 37. During the rotation of the filter plate 36, it moves left and right, contacting the bristles on the cleaning rod 37. The bristles then contact the filter plate... While cleaning the dust accumulated on the surface of the filter plate 36, the brush bristles clear the clogged filter holes during the movement of the filter plate 36, achieving self-cleaning, thereby improving the air filtration efficiency and preventing clogging that would affect use. At the same time, as the air compressor 41 pushes the bent rod 31 to move the magnetic block 38 on the filter plate 36 left and right, the magnetic flux in the inductor coil 33 changes, thereby generating positive and negative currents in the inductor coil 33 and supplying them to the electromagnet 210. When the electromagnet 210 receives a positive current, it exhibits the same polarity as the magnet 211, thereby pushing the magnet 211 to extend the telescopic baffle 29. When the electromagnet 210 receives a reverse current, it exhibits the opposite polarity to the magnet 211, thereby pulling the magnet 211 to retract the telescopic baffle 29. During the extension and retraction of the telescopic baffle 29, the gas flow state is changed, dividing the originally continuous noise propagation medium. When the noise comes into contact with the telescopic baffle 29, it undergoes reflection, scattering, and absorption, thereby effectively reducing the propagation of noise and achieving the purpose of noise reduction.

[0042] like Figure 4 , 6As shown, the oxygen generating unit 4 includes an air compressor 41, an intake branch pipe 42, a separator pipe 43, an outlet branch pipe 44, and a solenoid valve 45. The air compressor 41 is rotatably connected to the bent rod 31. The air compressor 41 is placed on the surface of the flexible silencing platform 21 away from the horizontal foundation. The air inlet of the air compressor 41 is fixedly connected to the ventilation pipe 28. The end of the air compressor 41 near the horizontal foundation is fixedly connected to the push rod 22. One end of the intake branch pipe 42 is fixedly connected to the air outlet of the air compressor 41, and the other end is connected to one end of the separator pipe 43. The intake branch pipe 42 is provided with an exhaust pipe, and a solenoid valve 45 is provided on the exhaust pipe of the intake branch pipe 42. The other end of the separator pipe 43 is connected to one end of the outlet branch pipe 44. A separator screen is placed inside the separator pipe 43. The other end of the outlet branch pipe 44 is connected to the air outlet of the outer casing 1. The outlet branch pipe 44 is provided with an exhaust pipe, and a solenoid valve 45 is provided on the exhaust pipe of the outlet branch pipe 44.

[0043] When the air compressor 41 draws in filtered air and compresses it, it is delivered to the inside of the separator 43 through the intake branch pipe 42. Under the action of the separator screen, the nitrogen in the air is blocked at the bottom of the separator 43, while the oxygen passes through the separator screen and enters the outlet of the outer casing 1 through the outlet branch pipe 44, making it convenient for users to breathe oxygen. When the separator screen in one of the separators 43 is blocked, the opening and closing of the solenoid valve 45 is controlled to allow oxygen to enter the other separator 43. The oxygen then flushes out the nitrogen inside the blocked separator 43 and discharges it from the exhaust port, thus achieving recycling.

[0044] like Figure 8 As shown, the multiple sets of telescopic baffles 29 have different lengths, and the surfaces of the multiple sets of telescopic baffles 29 are provided with multiple sets of recessed holes.

[0045] When continuous airflow passes through the vent 28, the varying lengths of the telescopic baffles 29 cause different reflection and refraction paths as the airflow passes through them, thus dispersing the noise generated by the airflow. This dispersed noise is more perceptible than continuous noise of a single frequency, thereby reducing the perceived noise intensity. The multiple sets of concave holes on the surface of the telescopic baffles 29 create vortices as the airflow passes through. When the airflow enters the concave holes, due to the spatial constraints and boundary conditions within the holes, small vortex structures form inside. These vortex structures continuously interact with the surrounding airflow, generating friction and collisions, thereby dissipating the airflow's energy and further reducing noise.

[0046] like Figure 4 As shown, the length ratio of the upright plate 23 of the fixed rod 24 near the flexible silencing platform 21 to the length of the upright plate 23 away from the flexible silencing platform 21 is 1:4 to 1:10.

[0047] In order to amplify the vertical vibration amplitude of the air compressor 41, the connecting rod 26 and the slip ring 27 push the bent rod 31 to rotate, thereby causing the filter plate 36 to rotate. When the air compressor 41 vibrates left and right, it works with the cleaning rod 37 to achieve self-cleaning of the filter plate 36 and improve the air filtration effect.

[0048] like Figure 8 As shown, the ventilation pipe 28 has a recess in the middle that matches the shape of the bent rod 31.

[0049] To prevent interference during the rotation of the bent rod 31 and avoid damage to the device, and to ensure the airflow direction of the vent pipe 28 is optimized, the diameter of the middle section decreases. When the pipe size changes, the size and frequency of the vortex in the airflow also change under the action of the telescopic baffle 29. This disperses the noise energy that was originally concentrated in a certain frequency band to multiple frequency bands. From the perspective of human hearing characteristics, this frequency dispersion reduces the sensitivity of the human ear to noise and achieves a certain noise reduction effect.

[0050] like Figure 5 As shown, the end of the drive coil on the guide column 35 away from the air compressor 41 is the current input port.

[0051] In order to reduce the size of the drive coil on the guide column 35 and lower its resistance when the air compressor 41 vibrates significantly, so as to provide sufficient current to the electric telescopic rod 212 to suppress the vibration of the air compressor 41 and thus reduce the noise caused by the vibration of the device.

[0052] like Figure 1 As shown, controller 11 is electrically connected to solenoid valve 45, and controller 11 is electrically connected to drive coil on guide post 35.

[0053] In order to achieve automated control and timely response of the device, the extension of the electric telescopic rod 212 can be changed according to the amplitude of the left and right vibration of the air compressor 41, thereby effectively suppressing the vibration of the air compressor 41, reducing noise, and avoiding damage to other components caused by excessive vibration amplitude.

[0054] Working principle of the invention: When the controller 11 starts the air compressor 41, the air compressor 41 will generate a combination of vertical and horizontal vibrations during operation, thus producing noise. When the air compressor 41 vibrates vertically, the flexible silencing platform 21 eliminates the noise generated by the vibration. Simultaneously, as the air compressor 41 moves downward, it pushes the push rod 22, causing the vertical plate 23 to rotate clockwise around the fixed rod 24 while stretching the telescopic spring 25. When the air compressor 41 vibrates upward, the telescopic spring 25 contracts under its own restoring force, causing the vertical plate 23 to swing on the fixed rod 24, thus facilitating the movement of the connecting rod 26. The lower sliding ring 27 drives the bent rod 31 to rotate. During the rotation of the bent rod 31, the filter plate 36 rotates inside the filter cone 32. When the air compressor 41 vibrates in the left and right directions, the air compressor 41 moves, pushing the air pipe 28 to move the filter cone 32. During this process, the conductive rod 34 moves on the guide post 35. When the vibration amplitude of the air compressor 41 is large, the conductive rod 34 contacts the drive coil on the guide post 35. The effective number of turns of the drive coil gradually decreases, and the resistance gradually decreases. The current transmitted through the drive coil to the conductive ring and finally to the electric telescopic rod 212 gradually increases, thereby causing the electric telescopic rod 212 to extend. At a fixed distance, the damping plate 213 is pushed to prevent large vibrations of the air compressor 41 and absorb the generated noise, thereby achieving noise reduction. On the other hand, when the air compressor 41 vibrates left and right, it pushes the bent rod 31 to drive the filter plate 36 to contact the cleaning rod 37. During the rotation of the filter plate 36, it moves left and right and contacts the bristles on the cleaning rod 37. The bristles clean the dust accumulated on the surface of the filter plate 36, and at the same time, the bristles clear the blocked filter holes during the movement of the filter plate 36, thereby improving the air filtration efficiency and preventing clogging that would affect use. At the same time, as the air compressor 41 pushes the bent rod 31 to drive the magnetic block 38 on the filter plate 36 to move left and right, the filter plate 36 also experiences a self-cleaning process. The magnetic flux in the inductor coil 33 changes, thereby generating positive and negative currents in the inductor coil 33 and supplying them to the electromagnet 210. When the electromagnet 210 receives a positive current, it exhibits the same polarity as the magnet 211, thereby pushing the magnet 211 to extend the telescopic baffle 29. When the electromagnet 210 receives a reverse current, it exhibits the opposite polarity to the magnet 211, thereby pulling the magnet 211 to retract the telescopic baffle 29. During the extension and retraction of the telescopic baffle 29, the gas flow state is changed, which divides the originally continuous noise propagation medium. When the noise comes into contact with the telescopic baffle 29, it is reflected, scattered, and absorbed, thereby effectively reducing the propagation of noise and achieving the purpose of noise reduction.

[0055] When the air compressor 41 draws in filtered air and compresses it, it is delivered to the inside of the separator 43 through the intake branch pipe 42. Under the action of the separator screen, the nitrogen in the air is blocked at the bottom of the separator 43, while the oxygen passes through the separator screen and enters the outlet of the outer casing 1 through the outlet branch pipe 44, making it convenient for users to breathe oxygen. When the separator screen in one of the separators 43 is blocked, the opening and closing of the solenoid valve 45 is controlled to allow oxygen to enter the other separator 43. The oxygen then flushes out the nitrogen inside the blocked separator 43 and discharges it from the exhaust port, thus achieving recycling.

[0056] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A portable oxygen generator with noise reduction function, characterized in that: The portable oxygen generator with noise reduction function includes a shell (1), a noise reduction unit (2), a cleaning unit (3) and an oxygen generation unit (4). The shell (1) is placed on a horizontal base. The noise reduction unit (2) is fixedly installed inside the shell (1). The cleaning unit (3) is slidably connected to the noise reduction unit (2). The cleaning unit (3) has the function of changing the noise reduction capability of the noise reduction unit (2). The cleaning unit (3) is fixedly installed inside the shell (1). The cleaning unit (3) has a self-cleaning function. The oxygen generation unit (4) is fixedly connected to the noise reduction unit (2). The oxygen generation unit (4) is rotatably connected to the cleaning unit (3). The oxygen generation unit (4) is fixedly installed inside the shell (1). A controller (11) is provided on the shell (1). The noise reduction unit (2) includes a vent pipe (28), a telescopic baffle (29), an electromagnet (210), a magnet (211), an electric telescopic rod (212), and a sound-absorbing plate (213). There are multiple sets of telescopic baffles (29). In the vertical direction, multiple sets of telescopic baffles (29) are fixedly installed on the inner walls of both sides of the vent pipe (28) parallel to the vertical axis. The electromagnet (210) is fixedly installed on one end of the telescopic baffle (29) near the inner wall of the vent pipe (28). One end of the magnet (211) is connected to the electromagnet (210) through a spring, and the other end is fixedly installed on the telescopic part of the telescopic baffle (29). The electromagnet (210) is electrically connected to the cleaning unit (3). The fixed end of the electric telescopic rod (212) is fixedly installed on the inner wall of the outer shell (1). The telescopic end of the electric telescopic rod (212) is fixedly connected to the sound-absorbing plate (213). The electric telescopic rod (212) is electrically connected to the cleaning unit (3). The cleaning unit (3) includes a bent rod (31), a filter cone (32), an inductor coil (33), a conductive rod (34), a guide column (35), a filter plate (36), a cleaning rod (37), and a magnetic block (38). One end of the bent rod (31) is rotatably connected to the oxygen generating unit (4), and the other end passes through the filter cone (32) and is fixedly connected to the filter plate (36). The inductor coil (33) is evenly and fixedly installed on the outer surface of the filter cone (32). The inductor coil (33) is electrically connected to the electromagnet (210). The conductive rod (34) One end is fixedly installed on the outer surface of the filter cone (32), and the other end is slidably installed on the guide post (35). The conductive rod (34) is electrically connected to the electric telescopic rod (212). The guide post (35) is fixedly installed on the inner wall of the outer shell (1). The surface of the guide post (35) is evenly wound with a drive coil. The cleaning rod (37) is fixedly installed on the inner wall of the outer shell (1). The cleaning rod (37) is provided with multiple sets of bristles on the side near the filter plate (36). The magnetic block (38) is fixedly installed on the side of the filter plate (36) near the cleaning rod (37).

2. The portable oxygen generator with noise reduction function according to claim 1, characterized in that: The outer shell (1) has a handle (12) at the end away from the horizontal foundation, a heat dissipation hole (13) on the outer shell (1), a control button (14) on the outer shell (1), a filter plate (15) on the outer shell (1), and an air intake on the outer shell (1).

3. A portable oxygen generator with noise reduction function according to claim 1, characterized in that: The noise reduction unit (2) also includes a flexible silencing platform (21), a push rod (22), a vertical plate (23), a fixed rod (24), a telescopic spring (25), a connecting rod (26), and a slip ring (27). The flexible silencing platform (21) is fixedly installed on the inner surface of the outer shell (1) near the horizontal foundation. One end of the push rod (22) is fixedly connected to the oxygen generating unit (4), and the other end is fixedly connected to the vertical plate (23) near the flexible silencing platform (21). The vertical plate (23) is rotatably installed on the fixed rod (24). The rod (24) is fixedly connected to the inner walls of both sides of the outer shell (1). The extension spring (25) is fixedly connected to the vertical plate (23) near the horizontal foundation at one end, and fixedly connected to the inner surface of the outer shell (1) near the horizontal foundation at the other end. The connecting rod (26) is rotatably connected to the vertical plate (23) at one end, and fixedly connected to the slip ring (27) at the other end. The slip ring (27) is slidably connected to the cleaning unit (3). The ventilation pipe (28) is fixedly connected to the oxygen generating unit (4) at one end, and slidably connected to the cleaning unit (3) at the other end.

4. A portable oxygen generator with noise reduction function according to claim 3, characterized in that: The bent rod (31) is slidably connected to the slip ring (27), one end of the filter cone (32) is slidably connected to the vent pipe (28), and the other end is fixedly connected to the inner wall of the outer shell (1). A buffer spring is built into the end of the filter cone (32) away from the vent pipe (28).

5. A portable oxygen generator with noise reduction function according to claim 4, characterized in that: The oxygen generating unit (4) includes an air compressor (41), an intake branch pipe (42), a separator pipe (43), an outlet branch pipe (44), and a solenoid valve (45). The air compressor (41) is rotatably connected to a bent rod (31). The air compressor (41) is placed on the surface of the flexible silencing platform (21) away from the horizontal foundation. The air inlet of the air compressor (41) is fixedly connected to the ventilation pipe (28). The end of the air compressor (41) near the horizontal foundation is fixedly connected to a push rod (22). One end of the intake branch pipe (42) is connected to the air compressor. (41) The air outlet is fixedly connected, and the other end is connected to one end of the separation pipe (43). The air inlet branch pipe (42) is provided with an exhaust pipe. The exhaust pipe of the air inlet branch pipe (42) is provided with a solenoid valve (45). The other end of the separation pipe (43) is connected to one end of the air outlet branch pipe (44). A separation screen is placed inside the separation pipe (43). The other end of the air outlet branch pipe (44) is connected to the air outlet of the outer shell (1). The air outlet branch pipe (44) is provided with an exhaust pipe. The exhaust pipe of the air outlet branch pipe (44) is provided with a solenoid valve (45).

6. A portable oxygen generator with noise reduction function according to claim 3, characterized in that: The multiple sets of telescopic baffles (29) have different lengths, and the surfaces of the multiple sets of telescopic baffles (29) are provided with multiple sets of concave holes.

7. A portable oxygen generator with noise reduction function according to claim 3, characterized in that: The length ratio of the upright plate (23) of the fixed rod (24) near the flexible silencing platform (21) to the upright plate (23) away from the flexible silencing platform (21) is 1:4 to 1:

10.

8. A portable oxygen generator with noise reduction function according to claim 1, characterized in that: The ventilation pipe (28) has a recessed part in the middle that matches the shape of the bent rod (31).

9. A portable oxygen generator with noise reduction function according to claim 5, characterized in that: The end of the drive coil on the guide column (35) away from the air compressor (41) is the current input port.

10. A portable oxygen generator with noise reduction function according to claim 5, characterized in that: The controller (11) is electrically connected to the solenoid valve (45), and the controller (11) is electrically connected to the drive coil on the guide post (35).

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