Secondary pressure reduction electronic oxygen regulator with mechanical backup and oxygen system
By using an oxygen regulator with a two-stage pressure reduction structure with mechanical backup and an electronic/mechanical degradation mode, the robustness and anti-interference issues of electronic oxygen regulators are solved, achieving stable oxygen regulation under high gas source pressure and continuous gas supply in the event of power failure.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-30
- Publication Date
- 2026-04-14
AI Technical Summary
Existing electronic oxygen regulators suffer from poor robustness and anti-interference performance due to their single-stage pressure reduction structure. They cannot stably regulate the oxygen supply under high gas source pressure and cannot supply gas when there is a power outage or malfunction.
It adopts a two-stage pressure reduction structure with mechanical backup, including primary and secondary pressure reduction valves and mechanical lung valves. Combined with electronic control and mechanical degradation modes, it realizes secondary pressure reduction and mechanical backup gas supply in the event of power failure.
It improves the system's robustness and anti-interference capabilities, ensures gas pressure remains within a stable range, optimizes breathing comfort, and continues gas supply in the event of power outages or malfunctions.
Smart Images
Figure CN121849359A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to oxygen supply equipment for aircraft, specifically to a two-stage decompression electronic oxygen regulator and oxygen system with mechanical backup. Background Technology
[0002] The electronic oxygen regulator is one of the core devices of the onboard oxygen system. Its function is to receive oxygen supplied by the upper oxygen system, identify the user's breathing status, and accurately provide oxygen through internal algorithms, thereby meeting the user's oxygen supply, compensation and positive pressure breathing functions under various conditions, improving the response speed and control accuracy of the oxygen system, and thus giving full play to the user's work efficiency.
[0003] Currently, electronic oxygen regulators have the following problems: 1) They generally adopt a single-stage valve pressure reduction structure, and the single pressure reduction level is too high, resulting in poor system robustness and anti-interference performance, which cannot fully meet the actual use needs. The valve uses pre-tightening spring force to achieve sealing. In order to ensure the response speed and accuracy of the electronic control, the pre-tightening force setting must be adapted to the motor force. This causes the valve to be unable to seal under excessively high gas source pressure. When the inlet gas source pressure of the oxygen regulator is too high, the electronic oxygen regulator cannot stably regulate the amount of oxygen required by the user. Too much oxygen will cause the user to experience "choking" and discomfort due to high exhalation resistance; 2) In the event of power failure, malfunction, etc., there will be a situation where gas supply cannot be provided. Summary of the Invention
[0004] The purpose of this invention is to provide a two-stage pressure-reducing electronic oxygen regulator with mechanical backup, and an oxygen system including the above regulator. The oxygen regulator can reduce the pressure of the gas source by two stages, increase the robustness and anti-interference of the system, keep the gas pressure in a relatively stable range, optimize breathing comfort, and ensure continued operation in the event of a power outage.
[0005] The technical solution adopted in this invention is: A two-stage pressure-reducing electronic oxygen regulator with mechanical backup includes an inlet chamber for oxygen input, an outlet chamber for oxygen output, and a control module. The inlet chamber is connected to a first-stage pressure-reducing chamber via a first-stage pressure-reducing valve. The first-stage pressure-reducing chamber is connected to the outlet chamber via a second-stage pressure-reducing valve and a mechanical lung valve. One side of the first-stage pressure-reducing valve is pre-tensioned by a first-stage pressure-reducing valve spring, and the other side is connected to the first-stage pressure-reducing chamber via a feedback chamber and a narrow channel. The feedback chamber is controlled by a feedback valve, which is pre-tensioned by a feedback valve spring and driven by a feedback valve magnetic component. The second-stage pressure-reducing valve is pre-tensioned by a second-stage pressure-reducing valve spring and driven by a linear motor. The mechanical lung valve is controlled by a spring and its opening and closing are controlled by a transmission component. The transmission component is connected to the magnetic component and pressure-sensitive diaphragm of the mechanical lung valve. When the magnetic component is energized, it can maintain the mechanical lung valve normally closed through the transmission component. When the magnetic component is de-energized, the pressure-sensitive diaphragm can drive the mechanical lung valve to open through the transmission component under the pressure difference between the inside and outside of the outlet cavity. Pressure sensors are installed in the inlet cavity, outlet cavity, and primary decompression chamber. The control module can receive feedback from each pressure sensor when powered on and control the feedback valve magnetic component, linear motor, and mechanical lung valve magnetic component to achieve secondary decompression.
[0006] Preferably, under power supply conditions, in electronic control mode: the control module energizes the magnetic component of the mechanical lung valve, keeping the mechanical lung valve normally closed. Oxygen enters from the inlet, first passing through a primary decompression valve for primary decompression, then through a secondary decompression valve for secondary decompression, and finally exits from the outlet. When the pressure sensor at the inlet detects that the pressure is within the normal range, the control module, based on feedback from the pressure sensor at the outlet, controls the opening of the secondary decompression valve via a linear motor to ensure that the output pressure accurately meets the preset requirements. When the pressure sensor at the inlet detects that the pressure is too high, and the pressure sensor at the primary decompression chamber detects that it is still too high after primary decompression, the control module energizes the magnetic component of the feedback valve to open the feedback chamber. Oxygen in the primary decompression chamber passes through the narrow channel and the feedback chamber sequentially, acting on the non-pre-tightened side of the primary decompression valve, causing the opening of the primary decompression valve to decrease, thereby reducing the pressure in the primary decompression chamber. This continues until the pressure sensor at the inlet detects that the pressure has returned to the normal range, at which point the control module de-energizes the magnetic component of the feedback valve to close the feedback chamber.
[0007] Preferably, the control module uses the feedback data from each pressure sensor as a basis, processes the data, and controls the feedback valve magnetic component, linear motor, and mechanical lung valve magnetic component according to a preset program and parameters. Specifically, the feedback valve magnetic component and the mechanical lung valve magnetic component are controlled to be in two states: on and off. The linear motor is controlled to maintain a fine state based on the duty cycle calculated by the program.
[0008] Preferably, during power failure, the system is in mechanical degradation mode: the feedback valve magnetic component, linear motor, and mechanical lung valve magnetic component are all de-energized; the secondary pressure reducing valve is closed; the mechanical lung valve is closed but not electromagnetically locked by the mechanical lung valve magnetic component; oxygen is input from the inlet mouth, passes through the primary pressure reducing valve, and then enters the primary pressure reducing chamber where it is blocked. As the user breathes, the pressure in the outlet mouth becomes lower than the external pressure. Under the pressure difference between the inside and outside of the outlet mouth, the pressure-sensitive diaphragm drives the mechanical lung valve to open via the transmission component. Oxygen in the primary pressure reducing chamber enters the outlet mouth through the mechanical lung valve and is then output. When the pressure in the primary pressure reducing chamber is high, the oxygen in the primary pressure reducing chamber enters the feedback chamber through a narrow channel and overcomes the force of the feedback valve spring to push open the feedback valve. This then acts on the non-pre-tightened side of the primary pressure reducing valve, causing the opening of the primary pressure reducing valve to decrease, thereby reducing the pressure in the primary pressure reducing chamber.
[0009] Preferably, the primary pressure reducing valve is slidably fitted in the slide groove by a sealing ring. The slide groove is open on the pre-tightening side of the primary pressure reducing valve and closed on the non-pre-tightening side of the primary pressure reducing valve, but it is connected to the feedback chamber.
[0010] Preferably, the pressure-sensitive diaphragm is installed on the housing as part of the housing, and a cover is provided on the outside of the pressure-sensitive diaphragm, with a communication hole for communicating with the outside.
[0011] Preferably, one end of the transmission component is connected to the mechanical lung valve, and the other end is an electromagnetic armature. When the magnetic component of the mechanical lung valve is energized, it can attract the electromagnetic armature to keep the mechanical lung valve normally closed. The pressure-sensitive diaphragm is connected to the transmission component through a connecting rod. When the magnetic component of the mechanical lung valve is de-energized, the pressure-sensitive diaphragm can drive the mechanical lung valve to open against the force of the mechanical lung valve spring through the connecting rod and the transmission component under the action of the pressure difference inside and outside the outlet cavity.
[0012] Preferably, the pressure sensor at the inlet of the oral cavity is close to the inlet, the pressure sensor at the outlet of the oral cavity is close to the outlet, and the pressure sensor at the primary decompression chamber is close to the primary decompression valve.
[0013] Preferably, the primary decompression valve, the secondary decompression valve, and the mechanical lung valve are all flat valves.
[0014] An oxygen system comprising the aforementioned electronic oxygen regulator with mechanical backup and a two-stage pressure reduction function.
[0015] The beneficial effects of this invention are: This oxygen regulator can switch between electronic control mode and mechanical degradation mode. In the power-on state, it adopts electronic control mode, which can perform secondary pressure reduction on excessively high gas sources (reducing the single pressure reduction level, which can be used for gas sources with higher inlet pressure), increasing the robustness and anti-interference of the system, keeping the gas pressure within a relatively stable range, and optimizing breathing comfort (close to "unobtrusive breathing"). In the event of a power failure, it adopts mechanical degradation mode, which can ensure continued operation in the event of a power failure or malfunction (but with performance degradation) to prevent situations where gas supply is unavailable. Attached Figure Description
[0016] Figure 1 This is a schematic diagram of a two-stage pressure-reducing electronic oxygen regulator with mechanical backup in this invention, where the dashed lines represent circuit connections.
[0017] Figure 2 This is a schematic diagram of the oxygen flow direction in the electronic oxygen regulator with mechanical backup in the electronic control mode of the present invention.
[0018] Figure 3 This is a schematic diagram of the oxygen flow direction in the mechanical degradation mode of the two-stage pressure-reducing electronic oxygen regulator with mechanical backup in this invention.
[0019] In the diagram: 1-Control module; 2-Pressure sensor; 3-Outlet cavity; 4-Linear motor; 5-Secondary pressure relief valve spring; 6-Secondary pressure relief valve; 7-Primary pressure relief chamber; 8-Pressure sensor; 9-Feedback valve; 10-Feedback valve magnetic component; 11-Feedback valve spring; 12-Primary pressure relief valve; 13-Sealing ring; 14-Inlet cavity; 15-Pressure sensor; 16-Primary pressure relief valve spring; 17-Mechanical lung valve; 18-Mechanical lung valve spring; 19-Mechanical lung valve magnetic component; 20-Transmission component; 21-Pressure-sensing diaphragm; 22-Cover; 23-Feedback chamber; 24-Narrow passage. Detailed Implementation
[0020] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.
[0021] Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the 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.
[0022] 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 further defined and explained in subsequent figures.
[0023] The features and performance of this application will be further described in detail below with reference to the embodiments.
[0024] Example 1 This embodiment discloses a two-stage pressure-reducing electronic oxygen regulator with mechanical backup, such as... Figure 1 As shown: The system includes an inlet oral cavity 14, a primary decompression chamber 7, an outlet oral cavity 3, and a control module 1. The inlet oral cavity 14 is used for oxygen input. It connects to the primary decompression chamber 7 via a primary decompression valve 12. The primary decompression chamber 7 connects to the outlet oral cavity 3 via a secondary decompression valve 6 and a mechanical lung valve 17. The outlet oral cavity 3 is used for oxygen output. One side of the primary decompression valve 12 is pre-tightened by a primary decompression valve spring 16. The other side of the primary decompression valve 12 connects to the primary decompression chamber 7 via a feedback chamber 23 and a narrow channel 24. The feedback chamber 23 is controlled by a feedback valve 9, which is pre-tightened by a feedback valve spring 11 and driven by a feedback valve magnetic element 10. The secondary decompression valve 6 is pre-tightened by a secondary decompression valve spring 5 and its opening is controlled by a linear motor 4. The mechanical lung valve... Mechanical lung valve 17 is pre-tensioned by spring 18. Mechanical lung valve 17 is controlled to open and close by transmission component 20. Transmission component 20 is connected to mechanical lung valve magnetic component 19 and pressure-sensing diaphragm 21. When mechanical lung valve magnetic component 19 is energized, it can maintain mechanical lung valve 17 normally closed through transmission component 20. When mechanical lung valve magnetic component 19 is de-energized, it can drive mechanical lung valve 17 to open through transmission component 20 under the action of pressure difference inside and outside the outlet cavity 3. Pressure sensor 15 is installed in inlet cavity 3, pressure sensor 2 is installed in outlet cavity 3, and pressure sensor 8 is installed in primary decompression chamber 7. Control module 1 can receive feedback from each pressure sensor (15, 2, 8) and control feedback valve magnetic component 10, linear motor 4 and mechanical lung valve magnetic component 19 to achieve secondary decompression when powered on.
[0025] This oxygen regulator can switch between electronic control mode and mechanical degradation mode. In the power-on state, it adopts electronic control mode, which can perform secondary pressure reduction on excessively high gas sources (reducing the single pressure reduction level, which can be used for gas sources with higher inlet pressure), increasing the robustness and anti-interference of the system, keeping the gas pressure within a relatively stable range, and optimizing breathing comfort (close to "unobtrusive breathing"). In the event of a power failure, it adopts mechanical degradation mode, which can ensure continued operation in the event of a power failure or malfunction (but with performance degradation) to prevent situations where gas supply is unavailable.
[0026] When powered on, it is in electronic control mode, such as Figure 2 As shown: Control module 1 energizes the magnetic component 19 of the mechanical lung valve, keeping the mechanical lung valve 17 in a normally closed state. Oxygen enters from the inlet 14, first passing through the primary decompression valve 12 for primary decompression, then through the secondary decompression valve 6 for secondary decompression, and finally entering the outlet 3 for output. When the pressure sensor 14 at the inlet 14 detects that the pressure is within the normal range, control module 1, based on the feedback from the pressure sensor 2 at the outlet 3, controls the opening of the secondary decompression valve 6 via the linear motor 4 to ensure that the output pressure accurately meets the preset requirements. When the pressure sensor 15 detects excessive pressure and the pressure sensor 8 at the primary pressure reducing chamber 7 detects that the pressure is still too high after the primary pressure reducing process, the control module 1 energizes the feedback valve magnetic element 10 to open the feedback chamber 23. Oxygen in the primary pressure reducing chamber 7 passes through the narrow channel 24 and the feedback chamber 23 in sequence, acting on the non-pre-tightened side of the primary pressure reducing valve 12, causing the opening of the primary pressure reducing valve 12 to decrease, thereby reducing the pressure in the primary pressure reducing chamber 7. When the pressure sensor 15 at the inlet 14 detects that the pressure has returned to the normal range, the control module 1 de-energizes the feedback valve magnetic element 10 to close the feedback chamber 23.
[0027] In this embodiment, the control module 1 uses the feedback data from each pressure sensor (15, 2, 8) as a basis, processes the data, and controls the feedback valve magnetic component 10, the linear motor 4, and the mechanical lung valve magnetic component 19 according to the preset program and parameters. Specifically, the feedback valve magnetic component 10 and the mechanical lung valve magnetic component 19 are controlled to be in two states: on and off. The fine state of the linear motor 4 is controlled according to the duty cycle calculated by the program.
[0028] When power is lost, it enters mechanical degradation mode, such as Figure 3 As shown: The feedback valve magnet 10, linear motor 4, and mechanical lung valve magnet 19 are all de-energized. The secondary pressure reducing valve 6 is closed, and the mechanical lung valve 17 is closed but not electromagnetically locked by the mechanical lung valve magnet 19. Oxygen is input from the inlet 14, passes through the primary pressure reducing valve 12, and is blocked in the primary pressure reducing chamber 7. As the user breathes, the pressure in the outlet 3 is lower than the external pressure. Under the pressure difference between the inside and outside of the outlet 3, the pressure-sensitive diaphragm 21 drives the mechanical lung valve 17 to open via the transmission component 20. Oxygen in the primary decompression chamber 7 enters the oral cavity 3 and is output through the mechanical lung valve 17. When the pressure in the primary decompression chamber 7 is high, the oxygen in the primary decompression chamber 7 enters the feedback chamber 23 through the narrow channel 24 and pushes open the feedback valve 9 against the force of the feedback valve spring 11. This then acts on the non-pre-tightened side of the primary decompression valve 12, causing the opening of the primary decompression valve 12 to decrease, thereby reducing the pressure in the primary decompression chamber 7. This is similar to the above-mentioned electronic control mode, but because pneumatic force replaces electromagnetic force, the oxygen pressure fluctuation range is larger and the response speed is slower.
[0029] like Figures 1 to 3 As shown, in this embodiment, the primary pressure relief valve 12 is sealed and slidably fitted in the slide groove by the sealing ring 13. The slide groove is open on the pre-tightening side of the primary pressure relief valve 12 and closed on the non-pre-tightening side of the primary pressure relief valve 12, but is connected to the feedback chamber 23; to ensure that the primary pressure relief valve 12 slides smoothly.
[0030] like Figures 1 to 3 As shown, in this embodiment, the pressure-sensitive diaphragm 21 is installed on the housing as part of the housing, and the outer side of the pressure-sensitive diaphragm 21 is covered by a cover 22, which has a communication hole that communicates with the outside. The cover 22 protects the pressure-sensitive diaphragm 21 and prevents external components from directly contacting the pressure-sensitive diaphragm 21.
[0031] like Figures 1 to 3 As shown, in this embodiment, one end of the transmission component 20 is connected to the mechanical lung valve 17, and the other end is an electromagnetic armature. When the magnetic component 19 of the mechanical lung valve is energized, it can attract the electromagnetic armature to keep the mechanical lung valve 17 normally closed. The pressure-sensitive diaphragm 21 is connected to the transmission component 20 through a connecting rod. When the magnetic component 19 of the mechanical lung valve is de-energized, the pressure-sensitive diaphragm 21 can drive the mechanical lung valve 17 to overcome the force of the mechanical lung valve spring 18 and open under the action of the pressure difference inside and outside the outlet cavity 3 through the connecting rod and the transmission component 20.
[0032] like Figures 1 to 3 As shown, in this embodiment, pressure sensor 15 at the inlet cavity 14 is close to the inlet, pressure sensor 2 at the outlet cavity 3 is close to the outlet, and pressure sensor 8 at the primary pressure reducing chamber 7 is close to the primary pressure reducing valve 12, so the measured pressure is more accurate.
[0033] like Figures 1 to 3As shown, in this embodiment, the primary decompression valve 12, the secondary decompression valve 6, and the mechanical lung valve 17 are all flat valves.
[0034] Example 2 This embodiment discloses an oxygen system that includes the two-stage pressure-reducing electronic oxygen regulator with mechanical backup described in Embodiment 1 above.
[0035] The embodiments described above are some, but not all, of the embodiments of this application. The detailed description of the embodiments of this application is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments. 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.
Claims
1. A two-stage pressure-reducing electronic oxygen regulator with mechanical backup, characterized in that: It includes an inlet chamber for oxygen input, an outlet chamber for oxygen output, and a control module. The inlet chamber is connected to a primary pressure-reducing chamber via a primary pressure-reducing valve. The primary pressure-reducing chamber is connected to the outlet chamber via a secondary pressure-reducing valve and a mechanical lung valve. One side of the primary pressure-reducing valve is pre-tensioned by a primary pressure-reducing valve spring, and the other side is connected to the primary pressure-reducing chamber via a feedback chamber and a narrow channel. The feedback chamber is controlled by a feedback valve, which is pre-tensioned by a feedback valve spring and driven by a feedback valve magnetic component. The secondary pressure-reducing valve is pre-tensioned by a secondary pressure-reducing valve spring and its opening is controlled by a linear motor. The mechanical lung valve... The mechanical lung valve is pre-tensioned by a spring and its opening and closing are controlled by a transmission component. The transmission component is connected to both the magnetic component and the pressure-sensitive diaphragm of the mechanical lung valve. When the magnetic component of the mechanical lung valve is energized, it can maintain the mechanical lung valve normally closed through the transmission component. When the magnetic component of the mechanical lung valve is de-energized, the pressure-sensitive diaphragm can drive the mechanical lung valve to open through the transmission component under the action of the pressure difference inside and outside the outlet cavity. Pressure sensors are installed in the inlet cavity, outlet cavity, and primary decompression chamber. The control module can receive feedback from each pressure sensor when powered on and control the feedback valve magnetic component, linear motor, and mechanical lung valve magnetic component to achieve secondary decompression.
2. The two-stage pressure-reducing electronic oxygen regulator with mechanical backup as described in claim 1, characterized in that, In power-on mode, the system operates in electronic control mode: The control module energizes the magnetic component of the mechanical lung valve, keeping it normally closed. Oxygen enters through the inlet, first passing through a primary pressure-reducing valve, then through a secondary pressure-reducing valve, and finally through the outlet. When the pressure sensor at the inlet detects that the pressure is within the normal range, the control module, based on feedback from the pressure sensor at the outlet, controls the opening of the secondary pressure-reducing valve via a linear motor to ensure the output pressure precisely meets the preset requirements. When the pressure sensor at the inlet detects excessive pressure, and the pressure sensor at the primary pressure-reducing chamber detects that the pressure remains excessive even after primary pressure reduction, the control module energizes the magnetic component of the feedback valve to open the feedback chamber. Oxygen in the primary pressure-reducing chamber passes sequentially through a narrow channel and the feedback chamber, acting on the non-pre-tightened side of the primary pressure-reducing valve, causing the valve opening to decrease, thus reducing the pressure in the primary pressure-reducing chamber. This continues until the pressure sensor at the inlet detects that the pressure has returned to the normal range, at which point the control module de-energizes the magnetic component of the feedback valve to close the feedback chamber.
3. The two-stage pressure-reducing electronic oxygen regulator with mechanical backup as described in claim 2, characterized in that: Based on the feedback data from each pressure sensor, the control module processes the data and controls the feedback valve magnetic component, linear motor, and mechanical lung valve magnetic component according to the preset program and parameters. Specifically, it controls the feedback valve magnetic component and the mechanical lung valve magnetic component to be in two states: on and off. The linear motor is precisely controlled according to the duty cycle calculated by the program.
4. The two-stage pressure-reducing electronic oxygen regulator with mechanical backup as described in claim 1, characterized in that, When power is lost, the system enters mechanical degradation mode: the feedback valve magnetic component, linear motor, and mechanical lung valve magnetic component are all de-energized. The secondary pressure reducing valve is closed, and the mechanical lung valve is closed but not electromagnetically locked by the mechanical lung valve magnetic component. Oxygen is input from the inlet mouth, passes through the primary pressure reducing valve, and then enters the primary pressure reducing chamber where it is blocked. As the user breathes, the pressure in the outlet mouth becomes lower than the external pressure. Under the pressure difference between the inside and outside of the outlet mouth, the pressure-sensitive diaphragm drives the mechanical lung valve to open via the transmission component. Oxygen in the primary pressure reducing chamber enters the outlet mouth through the mechanical lung valve and is then output. When the pressure in the primary pressure reducing chamber is high, the oxygen in the primary pressure reducing chamber enters the feedback chamber through a narrow channel and overcomes the force of the feedback valve spring to push open the feedback valve. This then acts on the non-pre-tightened side of the primary pressure reducing valve, causing the opening of the primary pressure reducing valve to decrease, thereby reducing the pressure in the primary pressure reducing chamber.
5. The two-stage pressure-reducing electronic oxygen regulator with mechanical backup as described in claim 1, characterized in that: The primary pressure reducing valve is sealed and slidably fitted in the slide groove by a sealing ring. The slide groove is open on the pre-tightening side of the primary pressure reducing valve and closed on the non-pre-tightening side of the primary pressure reducing valve, but it is connected to the feedback chamber.
6. The two-stage pressure-reducing electronic oxygen regulator with mechanical backup as described in claim 1, characterized in that: The pressure-sensitive diaphragm is installed on the housing as part of the housing. The pressure-sensitive diaphragm is covered by a cover, and the cover has a communication hole that communicates with the outside.
7. The two-stage pressure-reducing electronic oxygen regulator with mechanical backup as described in claim 1, characterized in that: One end of the transmission component is connected to the mechanical lung valve, and the other end is an electromagnetic armature. When the magnetic component of the mechanical lung valve is energized, it can attract the electromagnetic armature to keep the mechanical lung valve normally closed. The pressure-sensitive diaphragm is connected to the transmission component through a connecting rod. When the magnetic component of the mechanical lung valve is de-energized, the pressure-sensitive diaphragm can drive the mechanical lung valve to overcome the force of the mechanical lung valve spring and open under the action of the pressure difference inside and outside the outlet cavity through the connecting rod and the transmission component.
8. The two-stage pressure-reducing electronic oxygen regulator with mechanical backup as described in claim 1, characterized in that: The pressure sensor at the inlet of the oral cavity is close to the inlet, the pressure sensor at the outlet of the oral cavity is close to the outlet, and the pressure sensor at the primary decompression chamber is close to the primary decompression valve.
9. The two-stage pressure-reducing electronic oxygen regulator with mechanical backup as described in claim 1, characterized in that: The primary decompression valve, the secondary decompression valve, and the mechanical lung valve are all flat valves.
10. An oxygen system, characterized in that: It includes a two-stage pressure-reducing electronic oxygen regulator with mechanical backup as described in any one of claims 1 to 9.