Oxygen generator

Abstract

The utility model provides an oxygen generator which comprises a machine body, a main control device, an oxygen generation device and an air suction terminal, the machine body is provided with a control panel, and the control panel is provided with keys and a parameter setting assembly; the main control device is arranged on the machine body and is in communication connection with the control panel; the main control device is provided with a Bluetooth communication component and a circuit board; the Bluetooth communication component is in communication connection with external mobile equipment; the oxygen generating device is arranged on the machine body and is electrically connected to the circuit board so as to respond to the signal and start to generate oxygen; the inspiration terminal is communicated with the oxygen generation device through a flow regulating valve, the inspiration terminal comprises a personal oxygen supply terminal and a dispersion oxygen supply terminal, and the personal oxygen supply terminal is connected with a ventilation assembly; the inspiration terminal is further electrically connected to the circuit board so as to respond to the signal to start one of the personal oxygen supply terminal and the dispersion oxygen supply terminal and close the other one of the personal oxygen supply terminal and the dispersion oxygen supply terminal, and then the personal oxygen supply terminal enables the user to inhale oxygen through the ventilation assembly, or the dispersion oxygen supply terminal enables the oxygen to be dispersed to the current surrounding environment of the oxygenerator so that multiple users can inhale the oxygen.

Description

Technical Field

[0001] The utility model relates to the technical field of oxygen concentrators, in particular to an oxygen concentrator. Background Art

[0002] Most existing portable oxygen concentrators are designed for single-user use and lack a diffuse oxygen supply function, making them unable to effectively increase the oxygen concentration in the surrounding environment to support multiple users simultaneously. Furthermore, most existing portable oxygen concentrators lack Bluetooth modules, making them unable to achieve wireless connection and remote operation with vehicle-mounted systems or mobile devices. Utility Model Content

[0003] In view of this, it is necessary to propose an oxygen concentrator.

[0004] In a first aspect, an embodiment of the present invention provides an oxygen concentrator, which includes a body, a main control device, an oxygen concentrator and an inhalation terminal. The body is provided with a control panel, the control panel is provided with a button for selecting an oxygen supply mode, and a parameter setting component electrically connected to the button; the button generates a corresponding signal when the user operates to select the oxygen supply mode, and the parameter setting component allows the user to set the oxygen supply parameters of the corresponding oxygen supply mode under the signal, and the oxygen supply parameters include oxygen concentration and oxygen supply time; the main control device is provided on the body and is communicatively connected to the control panel, the main control device is provided with a Bluetooth communication component, and a circuit board communicatively connected to the Bluetooth communication component; the Bluetooth communication component is communicatively connected to an external mobile device so that the user can remotely input the signal and set the oxygen supply parameters of the corresponding oxygen supply mode under the signal, and the circuit board receives the control panel or the external the oxygen generator is arranged in the machine body and electrically connected to the circuit board, so as to start producing oxygen in response to the signal received by the main control device; the inhalation terminal is connected to the oxygen generator through a flow regulating valve, and the inhalation terminal includes a personal oxygen supply terminal and a diffuse oxygen supply terminal, and the personal oxygen supply terminal is connected to a ventilation component; the flow regulating valve is electrically connected to the circuit board, so as to adjust the oxygen flowing into the inhalation terminal in response to the oxygen supply parameters of the corresponding oxygen supply mode; the inhalation terminal is also electrically connected to the circuit board, so as to enable one of the personal oxygen supply terminal and the diffuse oxygen supply terminal and disable the other in response to the signal, thereby enabling the personal oxygen supply terminal to provide the user with inhalation of the oxygen through the ventilation component, or enabling the diffuse oxygen supply terminal to diffuse the oxygen into the current surrounding environment of the oxygen generator for multiple users to inhale.

[0005] Optionally, the oxygen supply mode includes a personal oxygen supply mode and a diffuse oxygen supply mode, the buttons include a first button corresponding to the personal oxygen supply mode and a second button corresponding to the diffuse oxygen supply mode, and the signals include a first signal corresponding to the first button and a second signal corresponding to the second button; when the first signal and the second signal are responded to, the personal oxygen supply terminal and the diffuse oxygen supply terminal are respectively enabled.

[0006] Optionally, the oxygen concentrator further includes a data acquisition device, which is communicatively connected to the main control device. The data acquisition device includes a first oxygen concentration sensor and a pressure sensor. The first oxygen concentration sensor is used to sense the oxygen concentration of the current surrounding environment, and the pressure sensor is used to sense the pressure of the current surrounding environment.

[0007] Optionally, the body is provided with an air inlet; the oxygen production device includes a filter, a compressor, a sieve tower assembly and an oxygen tank; the filter is connected to the air inlet to filter the air entering the oxygen concentrator from the air inlet; the compressor is connected to the filter and electrically connected to the circuit board to compress the filtered air in response to the signal; the sieve tower assembly is connected to the compressor to adsorb the compressed air and output the oxygen; the oxygen tank is connected to the sieve tower assembly to store the oxygen.

[0008] Optionally, the sieve tower assembly includes a first sieve tower and a second sieve tower, and the circuit board is electrically connected to the first sieve tower and the second sieve tower through a first solenoid valve and a second solenoid valve, respectively, to alternately control the activation of the first solenoid valve and the second solenoid valve so that the first sieve tower and the second sieve tower alternately adsorb the compressed air.

[0009] Optionally, a first muffler is provided between the filter and the compressor to reduce the noise of the air entering the oxygen concentrator; one of the first sieve tower and the second sieve tower is connected to the oxygen tank, and the other is connected to the second muffler to reduce the noise of the adsorbed air.

[0010] Optionally, a third solenoid valve and a second oxygen concentration sensor electrically connected to the circuit board are further provided between the oxygen tank and the inhalation terminal; the third solenoid valve is located between the oxygen tank and the flow regulating valve, and the second oxygen concentration sensor is located between the flow regulating valve and the inhalation terminal to sense the oxygen concentration supplied to the user.

[0011] Optionally, the control panel is provided with an indicator light, and the main control device is also provided with a speaker; the indicator light and the speaker are respectively electrically connected to the circuit board to issue an alarm when the oxygen concentration received from the current surrounding environment or the oxygen concentration supplied to the user does not meet the preset conditions.

[0012] Optionally, the oxygen concentrator further includes a display screen, which is communicatively connected to the control panel to display the oxygen supply mode, the oxygen supply parameters, the oxygen concentration of the current ambient environment, and the oxygen concentration supplied to the user.

[0013] Optionally, the control panel is further provided with a switch control, and the switch control is operated by the user to start or shut down the oxygen concentrator.

[0014] The above-mentioned oxygen concentrator sets the oxygen supply mode of the oxygen concentrator through the Bluetooth communication component in the control panel or the main control device and communicates with an external mobile device. After the oxygen concentrator produces oxygen, the required oxygen supply terminal is activated according to the oxygen supply mode to supply oxygen to the user, thereby expanding the application scenarios of the oxygen concentrator and improving the convenience and flexibility of using the oxygen concentrator. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0016] Figure 1 This is a structural diagram of an oxygen concentrator provided in an embodiment of the utility model.

[0017] Figure 2 A three-dimensional diagram of an oxygen concentrator provided in accordance with an embodiment of the utility model.

[0018] Figure 3 The present invention provides a schematic diagram of the principle of an oxygen concentrator.

[0019] Component numbers

[0020]

[0021] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0022] In the description of the present invention, it is necessary to understand that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship described in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0023] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or the number of technical features indicated. Thus, a feature specified as "first" or "second" may explicitly or implicitly include one or more of such features. In the description of this utility model, "plurality" means two or more, unless otherwise specifically defined.

[0024] In this utility model, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection; direct connection, indirect connection through an intermediate medium, internal communication between two components, or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0025] To provide a clearer and more accurate understanding of the present invention, the following detailed description is provided with reference to the accompanying drawings. The accompanying drawings illustrate exemplary embodiments of the present invention, with like reference numerals representing like elements. It should be understood that the scales shown in the accompanying drawings are not those of the actual implementation of the present invention. These scales are for illustrative purposes only and are not drawn to scale.

[0026] Please see Figure 1 and Figure 2 , Figure 1 This is a schematic diagram of the structure of the oxygen concentrator provided in the embodiment of the utility model. Figure 2 A perspective view of an oxygen concentrator provided in an embodiment of the utility model. This application provides an oxygen concentrator 100 that can supply oxygen to users in a variety of ways and provides remote control capabilities, thereby expanding the application scenarios of the oxygen concentrator 100 and improving the convenience and flexibility of the oxygen concentrator 100. The specific features of each component of the oxygen concentrator 100 are described in detail below.

[0027] like Figure 1 and Figure 2As shown, the oxygen concentrator 100 includes a body 1, a main control device 2, an oxygen concentrator 3 and an inhalation terminal 4. The body 1 is provided with a control panel 10 for the user to set various parameters of the oxygen concentrator 100. Specifically, the control panel 10 is provided with a button 11 for selecting the oxygen supply mode, and a parameter setting component 12 electrically connected to the button 11. The button 11 generates a corresponding signal when the user operates to select the oxygen supply mode. The parameter setting component 12 can be a button combination containing a series of digital inputs, so that the user can set the oxygen supply parameters of the corresponding oxygen supply mode under the signal. The oxygen supply parameters include oxygen concentration and oxygen supply time. The oxygen concentration is the oxygen concentration that meets the user's inhalation needs. The oxygen supply time is the supply time supplied to the user by the inhalation terminal 4.

[0028] Furthermore, the oxygen supply mode includes a personal oxygen supply mode and a diffuse oxygen supply mode. The button 11 includes a first button 111 corresponding to the personal oxygen supply mode and a second button 112 corresponding to the diffuse oxygen supply mode. The signal includes a first signal corresponding to the first button 111 and a second signal corresponding to the second button 112. Whenever the user operates different buttons 11, the oxygen concentrator 100 can distinguish the different oxygen supply modes selected by the user through the different signals received, and when the same button 11 or different buttons 11 are operated continuously within a time period, only the signal input first within the time period can be sent to the main control device 2. Accordingly, the user can be informed by printing a corresponding prompt pattern (not shown) or receiving a corresponding prompt message on an external mobile device that only the signal input first within a time period can be sent to the main control device 2, so as to reduce the possibility of user misoperation.

[0029] In this embodiment, the main control device 2 is mounted on the main body 1 and communicatively connected to the control panel 10. The main control device 2 includes a Bluetooth communication component 21 and a circuit board 22 communicatively connected to the Bluetooth communication component 21. The Bluetooth communication component 21 is communicatively connected to an external mobile device (not shown) to allow a user to remotely input signals and set the oxygen supply parameters for the corresponding oxygen supply mode based on these signals. The external mobile device can be a portable mobile device, a vehicle with communication capabilities, or the like, further expanding the application scenarios of the oxygen concentrator 100. The circuit board 22 receives signals sent from the control panel 10 or an external mobile device, along with the oxygen supply parameters for the corresponding oxygen supply mode, to facilitate subsequent control of the oxygen concentrator 3 and the inhalation terminal 4.

[0030] In this embodiment, the oxygen generator 3 is disposed in the housing 1 and electrically connected to the circuit board 22 to start producing oxygen in response to a signal received by the main control device 2. Specific features of the oxygen generator 3 will be described in detail below.

[0031] In this embodiment, the inhalation terminal 4 is connected to the oxygen generator 3 via a flow control valve (not shown). The inhalation terminal 4 includes a personal oxygen supply terminal 41 and a diffuse oxygen supply terminal 42. The personal oxygen supply terminal 41 is connected to a ventilation assembly 411. The flow control valve is electrically connected to the circuit board 22 to regulate the oxygen flow into the inhalation terminal 4 in response to the oxygen supply parameters of the corresponding oxygen supply mode. The inhalation terminal 4 is also electrically connected to the circuit board 22 to activate different oxygen supply terminals based on different signals received. Specifically, in the present application, when the first signal and the second signal are responded to, the personal oxygen supply terminal 41 and the diffuse oxygen supply terminal 42 are respectively activated, so as to respond to the signals and activate one of the personal oxygen supply terminal 41 and the diffuse oxygen supply terminal 42, and turn off the other, so that the personal oxygen supply terminal 41 allows the user to inhale oxygen through the ventilation component 411, or the diffuse oxygen supply terminal 42 diffuses oxygen to the current surrounding environment of the oxygen concentrator 100 for multiple users to inhale, thereby realizing different ways of providing oxygen by the oxygen concentrator 100 and expanding the application scenarios of the oxygen concentrator 100.

[0032] In the above embodiment, the oxygen supply mode of the oxygen concentrator 100 is set by communicating with an external mobile device through the control panel 10 or the Bluetooth communication component 21 in the main control device 2, and after the oxygen concentrator 3 produces oxygen, the oxygen supply terminal corresponding to the oxygen supply mode is enabled to supply oxygen to the user.

[0033] In this embodiment, the oxygen concentrator 100 can also monitor the current surrounding environment to assist the user in selecting an appropriate oxygen supply method. Specifically, the oxygen concentrator 100 also includes a data acquisition device 5. The data acquisition device 5 is communicatively connected to the main control device 2. The data acquisition device 5 includes a first oxygen concentration sensor 51 and a pressure sensor 52. The first oxygen concentration sensor 51 is used to sense the oxygen concentration of the current surrounding environment. The pressure sensor 52 is used to sense the pressure of the current surrounding environment. The user can input the corresponding oxygen supply mode on the control panel 10 or an external mobile device according to the oxygen concentration of the current surrounding environment and / or the pressure of the current surrounding environment. The specific features of the oxygen concentrator 3 will be described in detail below.

[0034] Please see Figure 3 , which is a schematic diagram of the principle of the oxygen concentrator provided in an embodiment of the utility model.

[0035] In this embodiment, the body 1 is provided with an air inlet 15. The oxygen concentrator 3 includes a filter 31, a compressor 32, a sieve tower assembly 33, and an oxygen tank 34. The filter 31 is connected to the air inlet 15 to filter the air entering the oxygen concentrator 100 through the air inlet 15, thereby ensuring the cleanliness of the air entering the oxygen concentrator 100. The compressor 32 is connected to the filter 31 and electrically connected to the circuit board 22 to compress the filtered air in response to a signal. The sieve tower assembly 33 is connected to the compressor 32 to absorb the compressed air and output oxygen. The oxygen tank 34 is connected to the sieve tower assembly 33 to store the absorbed oxygen.

[0036] Furthermore, a buffer tank, radiator, and fan are provided between the compressor 32 and the sieve tower assembly 33 (the buffer tank, radiator, and fan are not shown). The buffer tank is used to reduce pressure fluctuations in the air compressed by the compressor 32. The radiator and fan work together to dissipate heat, maintaining stable operation of the oxygen concentrator 100. The specific features of the sieve tower assembly 33 will be described in detail below.

[0037] In this embodiment, the sieve tower assembly 33 includes a first sieve tower 331 and a second sieve tower 332. The circuit board 22 is electrically connected to the first and second sieve towers 331, 332 via first and second solenoid valves 351, 352, respectively. This alternately controls the activation of the first and second solenoid valves 351, 352, causing the first and second sieve towers 331, 332 to alternately adsorb compressed air. Specifically, when compressed air enters the sieve tower assembly 33, the pressurized sieve tower assembly 33 enhances its nitrogen adsorption capacity, causing nitrogen to be adsorbed on the molecular sieves while oxygen flows out through the sieve tower assembly 33, resulting in enriched oxygen. When the sieve tower assembly 33 reaches saturation, the adsorbed nitrogen is released by reducing the pressure or increasing the temperature, restoring its adsorption capacity and preparing for the next round of adsorption. When the first solenoid valve 351 and the second solenoid valve 352 are alternately controlled, the first sieve tower 331 and the second sieve tower 332 work alternately, that is, one sieve tower performs adsorption and the other sieve tower performs desorption, so as to ensure a continuous supply of oxygen.

[0038] Furthermore, a first muffler (not shown) is provided between the filter 31 and the compressor 32 to reduce the noise of the air entering the oxygen concentrator 100. One of the first sieve tower 331 and the second sieve tower 332 is connected to the oxygen tank 34, while the other is connected to a second muffler (not shown) to reduce the noise of the adsorbed air. Optionally, the first sieve tower 331 and the second sieve tower 332 are connected to the oxygen tank 34 and the second muffler, respectively, via a first and second tee joints (not shown), respectively, to desorb nitrogen. A throttle valve is also provided between the first tee joint and the oxygen tank 34 to buffer the flow of oxygen entering the oxygen tank 34.

[0039] In this embodiment, a third solenoid valve 353 and a second oxygen concentration sensor 36, electrically connected to the circuit board 22, are also provided between the oxygen tank 34 and the inhalation terminal 4. The third solenoid valve 353 is located between the oxygen tank 34 and the flow control valve. The second oxygen concentration sensor 36 is located between the flow control valve and the inhalation terminal 4 to sense the oxygen concentration supplied to the user. The third solenoid valve 353 can intelligently control oxygen supply based on the user's breathing rhythm, improving oxygen utilization. Specifically, when the personal oxygen supply terminal 41 detects the user inhaling through the ventilation component 411, the third solenoid valve 353 sends an inhalation signal to the circuit board 22. The circuit board 22 then controls the third solenoid valve 353 to conduct, and the oxygen concentrator 100 supplies oxygen. When the personal oxygen supply terminal 41 detects the user exhaling through the ventilation component 411, the third solenoid valve 353 sends an exhalation signal to the circuit board 22. At this point, the third solenoid valve 353 closes, and the system stops supplying oxygen. Based on this, the utilization rate of oxygen in the oxygen concentrator 100 is improved, and it is avoided that the user continues to be supplied with oxygen when the user exhales, resulting in oxygen waste and reducing the user's comfort.

[0040] Furthermore, the oxygen flowing out of the oxygen tank 34 can pass through a bacterial filter and a fire damper (not shown) to ensure oxygen cleanliness and safety. The bacterial filter filters out bacteria and other microscopic particles from the oxygen. The fire damper prevents localized open flames from spreading to the fire-resistant components of the entire oxygen concentrator 100, thereby improving the safety of the oxygen concentrator 100.

[0041] In this embodiment, the oxygen concentrator 100 provided herein can also provide real-time warnings regarding the oxygen supply status of the oxygen concentrator 100. Specifically, the control panel 10 is provided with an indicator light 13. The main control device 2 is also provided with a speaker 23. The indicator light 13 and the speaker 23 are each electrically connected to the circuit board 22. When the current ambient oxygen concentration transmitted by the first oxygen concentration sensor 51 or the oxygen concentration supplied to the user transmitted by the second oxygen concentration sensor 36 does not meet preset conditions, the circuit board 22 controls the first solenoid valve 351, the second solenoid valve 352, and the third solenoid valve 353 to close, thereby stopping the supply of oxygen to the inhalation terminal 4. This allows the user to troubleshoot potential faults in the oxygen concentrator 100 and then administer oxygen supplementation using an external oxygen supplementation device (not shown).

[0042] In this embodiment, the oxygen concentrator 100 further includes a display screen 6. The display screen 6 is communicatively connected to a control panel 10 to display the oxygen supply mode, oxygen supply parameters, the current ambient oxygen concentration, and the oxygen concentration supplied to the user. The control panel 10 also includes a switch 14. The switch 14 allows the user to activate or deactivate the oxygen concentrator 100.

[0043] In some feasible embodiments, the circuit board 22 can also be electrically connected to the switch control 14, and the circuit board 22 is integrated with a timer to record the time when the second oxygen concentration sensor 36 reaches the oxygen concentration through the timer, and control the switch control 14 in combination with the oxygen supply time to turn off the oxygen concentrator 100.

[0044] In the above embodiment, the oxygen supply mode of the oxygen concentrator is set by communicating with an external mobile device through the Bluetooth communication component in the control panel or the main control device, and after the oxygen concentrator produces oxygen, the required oxygen supply terminal is enabled corresponding to the oxygen supply mode to supply oxygen to the user, thereby expanding the application scenarios of the oxygen concentrator and improving the convenience and flexibility of using the oxygen concentrator.

[0045] Obviously, those skilled in the art may make various modifications and variations to the present invention without departing from the spirit and scope of the present application. Thus, if such modifications and variations fall within the scope of the claims of the present invention and their equivalents, the present invention is intended to include such modifications and variations.

[0046] The above examples are merely preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Therefore, equivalent changes made according to the claims of the present invention still fall within the scope of the present invention.

Claims

1. An oxygen concentrator, characterized in that: The oxygen concentrator comprises: The body is provided with a control panel, the control panel having a button for selecting an oxygen supply mode and a parameter setting component electrically connected to the button; the button generates a corresponding signal when the user operates the oxygen supply mode, and the parameter setting component allows the user to set the oxygen supply parameters of the corresponding oxygen supply mode according to the signal, wherein the oxygen supply parameters include oxygen concentration and oxygen supply time; a main control device, disposed in the body and communicatively connected to the control panel, the main control device being provided with a Bluetooth communication component and a circuit board communicatively connected to the Bluetooth communication component; the Bluetooth communication component being communicatively connected to an external mobile device so as to allow the user to remotely input the signal and set the oxygen supply parameters of the corresponding oxygen supply mode based on the signal; the circuit board receiving the signal sent by the control panel or the external mobile device and the oxygen supply parameters of the corresponding oxygen supply mode; an oxygen production device, disposed in the machine body and electrically connected to the circuit board, to start producing oxygen in response to a signal received by the main control device; An inhalation terminal is connected to the oxygen generator through a flow regulating valve, and the inhalation terminal includes a personal oxygen supply terminal and a diffuse oxygen supply terminal, and the personal oxygen supply terminal is connected to a ventilation component; the flow regulating valve is electrically connected to the circuit board to adjust the oxygen flowing into the inhalation terminal in response to the oxygen supply parameters of the corresponding oxygen supply mode; the inhalation terminal is also electrically connected to the circuit board to enable one of the personal oxygen supply terminal and the diffuse oxygen supply terminal and close the other in response to the signal, thereby enabling the personal oxygen supply terminal to provide the user with inhalation of the oxygen through the ventilation component, or enabling the diffuse oxygen supply terminal to diffuse the oxygen into the current surrounding environment of the oxygen generator for multiple users to inhale.

2. The oxygen concentrator according to claim 1, wherein The oxygen supply mode includes a personal oxygen supply mode and a diffuse oxygen supply mode, the buttons include a first button corresponding to the personal oxygen supply mode and a second button corresponding to the diffuse oxygen supply mode, the signals include a first signal corresponding to the first button and a second signal corresponding to the second button; when the first signal and the second signal are responded to, the personal oxygen supply terminal and the diffuse oxygen supply terminal are respectively enabled.

3. The oxygen concentrator according to claim 1, wherein The oxygen concentrator also includes a data acquisition device, which is communicatively connected to the main control device. The data acquisition device includes a first oxygen concentration sensor and a pressure sensor. The first oxygen concentration sensor is used to sense the oxygen concentration of the current surrounding environment, and the pressure sensor is used to sense the pressure of the current surrounding environment.

4. The oxygen concentrator according to claim 1, wherein The machine body is provided with an air inlet; the oxygen generating device includes a filter, a compressor, a sieve tower assembly and an oxygen tank; the filter is connected to the air inlet to filter the air entering the oxygen generator from the air inlet; the compressor is connected to the filter and electrically connected to the circuit board to compress the filtered air in response to the signal; the sieve tower assembly is connected to the compressor to adsorb the compressed air and output the oxygen; the oxygen tank is connected to the sieve tower assembly to store the oxygen.

5. The oxygen concentrator according to claim 4, characterized in that The sieve tower assembly includes a first sieve tower and a second sieve tower. The circuit board is electrically connected to the first sieve tower and the second sieve tower through a first solenoid valve and a second solenoid valve, respectively, to alternately control the activation of the first solenoid valve and the second solenoid valve so that the first sieve tower and the second sieve tower alternately adsorb the compressed air.

6. The oxygen concentrator according to claim 5, characterized in that A first muffler is provided between the filter and the compressor to reduce the noise of the air entering the oxygen concentrator; one of the first sieve tower and the second sieve tower is connected to the oxygen tank, and the other is connected to the second muffler to reduce the noise of the adsorbed air.

7. The oxygen concentrator according to claim 1, wherein A third solenoid valve and a second oxygen concentration sensor electrically connected to the circuit board are also provided between the oxygen tank and the inhalation terminal; the third solenoid valve is located between the oxygen tank and the flow regulating valve, and the second oxygen concentration sensor is located between the flow regulating valve and the inhalation terminal to sense the oxygen concentration supplied to the user.

8. The oxygen concentrator according to any one of claims 1 to 7, characterized in that: The control panel is provided with an indicator light, and the main control device is also provided with a speaker; the indicator light and the speaker are respectively electrically connected to the circuit board to issue an alarm when the oxygen concentration received from the current surrounding environment or the oxygen concentration supplied to the user does not meet the preset conditions.

9. The oxygen concentrator according to any one of claims 1 to 7, characterized in that: The oxygen concentrator further includes a display screen, which is communicatively connected to the control panel to display the oxygen supply mode, the oxygen supply parameters, the current ambient oxygen concentration, and the oxygen concentration supplied to the user.

10. The oxygen concentrator according to claim 1, wherein: The control panel is further provided with a switch control, which is operated by the user to start or shut down the oxygen concentrator.

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