High-efficiency liquid oxygen generator

Abstract

The invention relates to the technical field of oxygen supply instruments, and discloses a high-efficiency liquid oxygen generator, comprising: a liquid oxygen storage unit for storing liquid oxygen; the gasification unit is used for gasifying the liquid oxygen output by the liquid oxygen storage unit; the pressure adjusting unit is used for adjusting pipeline pressure and stabilizing liquid oxygen supply; the oxygen output unit is used for outputting and supplying gas; and the control system is used for monitoring the running state of the generator and performing real-time adjustment. According to the invention, the pressure regulating unit is arranged, and liquid oxygen is primarily gasified by using the pressure coil assembly so as to increase the internal pressure of the liquid oxygen container, so that subsequent liquid oxygen can be stably conveyed into the main evaporation coil assembly; in the continuous oxygen output period, the internal pressure of the liquid oxygen container can be continuously stabilized by changing the amount of the liquid oxygen entering the pressure coil assembly, and due to the existence of the internal pressure, gasified oxygen in the main evaporation coil assembly can be prevented from flowing back, accelerated vaporization of the liquid oxygen due to oxygen flowing back is avoided, and unnecessary liquid oxygen loss is reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of support equipment, in particular to a high-efficiency liquid oxygen generator. BACKGROUND

[0002] In the field of aerospace, a reliable oxygen supply system is crucial for flight safety. Common aircraft oxygen systems include gaseous oxygen bottles, chemical oxygen generators, and liquid oxygen systems. Compared with other systems, liquid oxygen systems have the advantages of light weight, small volume, and multiple refilling, and are suitable for various military and civilian aircraft. However, the existing liquid oxygen system still has some deficiencies in practical application, such as large evaporation loss of liquid oxygen, poor stability, high system complexity, and high requirements for the professional quality of maintenance personnel. Therefore, it is of great significance to develop a high-efficiency liquid oxygen generator. SUMMARY

[0003] The purpose of the present application is to provide a high-efficiency liquid oxygen generator to solve the problems of complex structure, large oxygen generation loss, and poor stability of existing equipment.

[0004] The present application is realized by the following technical scheme: a high-efficiency liquid oxygen generator, comprising: a liquid oxygen storage unit for storing liquid oxygen; a gasification unit for gasifying the liquid oxygen output by the liquid oxygen storage unit; a pressure regulating unit for regulating the pipeline pressure to stabilize the liquid oxygen supply; an oxygen output unit for outputting the oxygen produced by the gasification unit for personnel to use; a control system for monitoring the generator operating state and making real-time adjustments; The liquid oxygen storage unit is connected to the gasification unit, the pressure regulating unit is arranged between the liquid oxygen storage unit and the gasification unit, and the oxygen output unit is arranged at the rear end of the gasification unit. The liquid oxygen storage unit, gasification unit, pressure regulating unit, and oxygen output unit are all signal connected to the control system.

[0005] In order to better realize the present application, further, the liquid oxygen storage unit comprises a liquid oxygen container, a liquid oxygen delivery pipe is arranged at the bottom of the liquid oxygen container, an oxygen delivery pipe is arranged at the top of the liquid oxygen container, a flow regulating valve is arranged on the liquid oxygen delivery pipe, and an emptying valve is connected to the oxygen delivery pipe; A pipeline adapter is connected to the flow regulating valve, a second on-off valve and a third on-off valve are connected to different adapter interfaces of the pipeline adapter, the other end of the second on-off valve is connected to the gasification unit, and the third on-off valve is used for filling liquid oxygen.

[0006] In order to better realize the present application, further, the pressure regulating unit comprises a pressure building pipeline, a pressure coil assembly, and a first switch valve, the pressure building pipeline is connected with the oxygen delivery pipeline and the emptying valve respectively, the first switch valve is connected at one end of the pressure coil assembly, the pressure coil assembly is communicated with the pressure building pipeline, and the other end of the pressure coil assembly is communicated with the pipeline adapter.

[0007] In order to better realize the present application, further, the pressure regulating unit further comprises a first pressure sensor and a second pressure sensor, the first pressure sensor is connected between the pressure coil assembly and the pipeline adapter, and the second pressure sensor is installed at the top of the liquid oxygen container, and a temperature sensor is further installed in the liquid oxygen container.

[0008] In order to better realize the present application, further, the pressure regulating unit further comprises a first pressure sensor and a second pressure sensor, the first pressure sensor is connected between the pressure coil assembly and the pipeline adapter, and the second pressure sensor is installed at the top of the liquid oxygen container, and a temperature sensor is further installed in the liquid oxygen container.

[0009] In order to better realize the present application, further, the pressure regulating unit further comprises a first pressure sensor and a second pressure sensor, the first pressure sensor is connected between the pressure coil assembly and the pipeline adapter, and the second pressure sensor is installed at the top of the liquid oxygen container, and a temperature sensor is further installed in the liquid oxygen container.

[0010] In order to better realize the present application, further, the pressure regulating unit further comprises a first pressure sensor and a second pressure sensor, the first pressure sensor is connected between the pressure coil assembly and the pipeline adapter, and the second pressure sensor is installed at the top of the liquid oxygen container, and a temperature sensor is further installed in the liquid oxygen container.

[0011] In order to better realize the present application, further, the pressure regulating unit further comprises a first pressure sensor and a second pressure sensor, the first pressure sensor is connected between the pressure coil assembly and the pipeline adapter, and the second pressure sensor is installed at the top of the liquid oxygen container, and a temperature sensor is further installed in the liquid oxygen container.

[0012] In order to better realize the present application, further, the pressure regulating unit further comprises a first pressure sensor and a second pressure sensor, the first pressure sensor is connected between the pressure coil assembly and the pipeline adapter, and the second pressure sensor is installed at the top of the liquid oxygen container, and a temperature sensor is further installed in the liquid oxygen container.

[0013] In order to better realize the present application, further, the pressure regulating unit further comprises a first pressure sensor and a second pressure sensor, the first pressure sensor is connected between the pressure coil assembly and the pipeline adapter, and the second pressure sensor is installed at the top of the liquid oxygen container, and a temperature sensor is further installed in the liquid oxygen container.

[0014] Compared with the prior art, the present application has the following advantages and beneficial effects: (1) The present application sets up a pressure regulating unit, uses the pressure coil assembly to preliminarily gasify the liquid oxygen to improve the internal pressure of the liquid oxygen container, so that the subsequent liquid oxygen can be stably transported to the main evaporation coil assembly; during the continuous output of oxygen, the internal pressure of the liquid oxygen container can be continuously and stably improved by changing the amount of liquid oxygen entering the pressure coil assembly, and due to the existence of the internal pressure, the gasified oxygen in the main evaporation coil assembly can be prevented from backflowing, the liquid oxygen can be prevented from accelerating vaporization due to the backflow of oxygen, and unnecessary loss of liquid oxygen is reduced; (2) The liquid oxygen storage unit with a double-layer vacuum heat insulation structure effectively reduces the heat exchange between the liquid oxygen and the outside world, reduces the evaporation loss of the liquid oxygen, improves the utilization rate of the liquid oxygen, and reduces the frequency and cost of supplementing the liquid oxygen; (3) The operation process of the present application is simple, the control system has high automation degree, and a series of processes such as supply, vaporization, heating and pressure regulation of liquid oxygen can be automatically completed, thereby reducing manual intervention; and the structure of each component of the system is simple, compact and reasonable in layout, which is convenient for maintenance personnel to check and repair, thereby reducing the maintenance difficulty and workload; (4) The present application optimizes the vaporization unit and the heating unit, so that the liquid oxygen can be quickly and uniformly vaporized and heated, thereby improving the efficiency and stability of oxygen supply; at the same time, the coordinated cooperation between each device and the intelligent regulation and control of the control system ensure the reliable operation of the whole system under different working conditions, thereby reducing the system failure rate. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the present application.

[0016] Among them: 101-liquid oxygen container; 1011-inner layer; 1012-outer layer; 1013-oxygen delivery pipe; 1014-liquid oxygen delivery pipe; 102-liquid level detection assembly; 103-emptying valve; 104-first pressure relief valve; 105-first on-off valve; 106-pressure coil assembly; 107-second pressure relief valve; 108-main evaporation coil assembly; 109-oxygen filtration assembly; 110-flow regulating valve; 111-second on-off valve; 112-third on-off valve; 113-first pressure sensor; 114-second pressure sensor; 115-pressure building pipeline; 116-pressure relief discharge pipe. DETAILED DESCRIPTION

[0017] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0018] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connecting" should be understood in a broad sense, for example, it can be fixed connection, or detachable connection, or integrally connected; it can be mechanical connection, or electrical connection; it can be direct connection, or indirect connection through intermediate medium, or internal communication of two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances. Embodiment 1:

[0019] The embodiment provides a high-efficiency liquid oxygen generator, specifically as shown in the figure, comprising: Figure 1 A liquid oxygen storage unit for storing liquid oxygen; A gasification unit for gasifying the liquid oxygen output by the liquid oxygen storage unit; A pressure regulating unit for regulating pipeline pressure to stabilize liquid oxygen supply; An oxygen output unit for outputting the oxygen produced by the gasification unit for personnel use; A control system for monitoring the running state of the generator and making real-time adjustments; The liquid oxygen storage unit is connected with the gasification unit, the pressure regulating unit is arranged between the liquid oxygen storage unit and the gasification unit, and the oxygen output unit is arranged at the rear end of the gasification unit. The liquid oxygen storage unit, the gasification unit, the pressure regulating unit and the oxygen output unit are all signal-connected with the control system.

[0020] The control system adopts a microprocessor and an intelligent control algorithm to centrally control and monitor each component of the liquid oxygen generator. The control system presets oxygen supply parameters such as liquid oxygen flow, vaporization temperature, oxygen pressure under different flight stages and working conditions, and adjusts the running state of each unit in real time according to the information fed back by the sensor. For example, before the airplane takes off, the control system calculates the required amount of liquid oxygen according to the estimated flight time and the number of passengers, and controls the liquid oxygen storage unit to start supplying liquid oxygen to the vaporization unit; during the flight, the control system continuously monitors the pressure, temperature and flow of the oxygen, and automatically adjusts the working of the vaporization unit and the pressure regulating unit to ensure the stability and safety of the oxygen supply. At the same time, the control system also has fault diagnosis and alarm functions, which can timely send alarm signals and take corresponding protection measures such as closing the liquid oxygen supply and starting the standby system when abnormal conditions are monitored, to ensure flight safety. Embodiment 2:

[0021] The embodiment is further extended on the basis of the above-mentioned embodiment, specifically as Figure 1 ​As shown, the liquid oxygen storage unit includes a liquid oxygen container 101, a liquid oxygen delivery pipe 1014 arranged at the bottom of the liquid oxygen container 101, and an oxygen delivery pipe 1013 arranged at the top of the liquid oxygen container 101. The liquid oxygen delivery pipe 1014 is provided with a flow regulating valve 110, and the oxygen delivery pipe 1013 is connected with an emptying valve 103. Further, the flow regulating valve 110 is connected with a pipe adapter, and the pipe adapter is connected with a second switch valve 111 and a third switch valve 112 at different adapter interfaces. The second switch valve 111 is connected with a gasification unit at the other end, and the third switch valve 112 is used for filling liquid oxygen. The pipe adapter is a four-way adapter pipe.

[0022] Further, the liquid oxygen container 101 includes an inner layer 1011 and an outer layer 1012. The inner layer 1011 is made of high-strength aluminum alloy material, and the outer layer 1012 is made of stainless steel material. A vacuum gap is arranged between the inner layer 1011 and the outer layer 1012 to form an adiabatic layer. The volume of the liquid oxygen container 101 is designed according to the oxygen demand of the aircraft and the flight time. Generally, the liquid oxygen container 101 can store enough liquid oxygen to meet the needs of the maximum number of passengers of the aircraft in an emergency for a certain period of time.

[0023] Further, the oxygen delivery pipe 1013 is installed with a liquid level detection assembly 102. The liquid level detection assembly 102 is used to detect the liquid level height in the liquid oxygen container 101. The liquid oxygen container 101 is also installed with a temperature sensor. The liquid level meter that can be selected for the liquid level detection assembly 102 includes but is not limited to an ultrasonic liquid level meter. The temperature sensor and the liquid level detection assembly 102 both transmit signals to a control system. When the liquid level is lower than the set minimum liquid level, the control system issues an alarm to prompt the need for timely supplement of liquid oxygen. When the temperature sensor detects an abnormal rise in the temperature of the liquid oxygen, the control system starts the corresponding cooling measures, such as starting a refrigeration device (the corresponding cooling device is not shown in the figure) or adjusting the adiabatic performance of the liquid oxygen storage tank, to ensure the stable storage of the liquid oxygen.

[0024] The other parts of the embodiment are the same as those of the above-mentioned embodiments, and will not be described again. Embodiment 3:

[0025] The embodiment is further extended on the basis of the above-mentioned embodiments, and specifically as follows Figure 1As shown, the gasification unit includes a main evaporation coil assembly 108, the oxygen output unit includes an oxygen filter assembly 109, the main evaporation coil assembly 108 is connected with the second switch valve 111, and the oxygen filter assembly 109 is connected with the main evaporation coil assembly 108. The main evaporation coil assembly 108 is made of copper alloy material with high heat transfer efficiency, and the coil shape is designed as a spiral or a snake shape to increase the flow path and heat exchange area of the liquid oxygen in the coil. The oxygen filter assembly 109 is used to remove impurities and small particles in the oxygen to ensure the purity of the output oxygen. The filter is made of high-efficiency filtering material, which can effectively filter out impurities such as dust, oil stains, and metal debris, and ensure that the oxygen supplied to the crew and passengers meets the aviation breathing oxygen standard. The oxygen output pipeline is made of pressure-resistant and low-temperature-resistant materials, which reliably delivers the filtered oxygen to the aircraft oxygen distribution system to meet the oxygen use requirements of various parts of the aircraft.

[0026] Further, a warming unit is also included for heating the gasification unit. The high-temperature exhaust gas of the aircraft engine can be used as a heating source to transfer heat to the liquid oxygen in the main evaporation coil assembly 108 through heat exchange, so that the liquid oxygen is quickly vaporized. In actual application, according to the working state of the aircraft engine and the environmental conditions, the heat exchanger can automatically adjust the heating power to ensure the stability of the liquid oxygen vaporization process and the continuity of the oxygen output. For example, during the take-off and climb phase of the aircraft, the engine load is large, and the heat exchanger can fully utilize the excess heat generated by the engine to efficiently convert the liquid oxygen into gaseous oxygen; while during the cruise phase of the aircraft, the engine load is relatively small, and the heat exchanger can maintain the normal operation of the vaporization unit by adjusting the heat exchange efficiency to meet the continuous oxygen demand of the aircraft.

[0027] An electric heating method can also be selected, and the power of the electric heater can be accurately adjusted according to the flow rate of the oxygen and the required temperature increase. The control system automatically controls the working state of the electric heater according to the signal feedback from the oxygen temperature sensor, so that the temperature of the output oxygen is stabilized within the set range. For example, when the environmental temperature is low or the aircraft is in a high-cold area, the warming unit can increase the temperature of the oxygen to a suitable level for the crew to breathe and for the equipment to use, avoiding the adverse effects of low oxygen temperature on personnel health and equipment performance.

[0028] Further, the gasification unit also includes a secondary evaporation coil assembly, which is arranged between the main evaporation coil assembly 108 and the oxygen filter assembly 109 and is in series with them. The secondary evaporation coil assembly is arranged to ensure that if the liquid oxygen is not completely vaporized in the main evaporation coil assembly 108, it is completely vaporized through the secondary evaporation coil assembly, so that only oxygen exists in the oxygen output unit and no liquid oxygen exists.

[0029] The other parts of this embodiment are the same as those in the above embodiments, and will not be described again. Example 4:

[0030] This embodiment further extends the above embodiment, specifically as follows: Figure 1 As shown, the pressure regulating unit includes a pressure-building pipe 115, a pressure coil assembly 106, and a first switching valve 105. The pressure-building pipe 115 is connected to the oxygen delivery pipe 1013 and the vent valve 103, respectively. One end of the pressure coil assembly 106 is connected to the first switching valve 105, which communicates with the pressure-building pipe 115. The other end of the pressure coil assembly 106 is connected to the pipe adapter. The supply pressure of liquid oxygen is regulated by a small amount of vaporized liquid oxygen in the pressure coil assembly 106 to ensure a stable supply of liquid oxygen.

[0031] Furthermore, the pressure regulating unit also includes a first pressure sensor 113 and a second pressure sensor 114. The first pressure sensor 113 is connected between the pressure coil assembly 106 and the pipe adapter, and the second pressure sensor 114 is installed on the top of the liquid oxygen container 101. By using the first pressure sensor 113 and the second pressure sensor 114 in conjunction, the internal pressure difference can be monitored, thereby regulating the liquid oxygen supply.

[0032] Furthermore, the pressure regulating unit also includes a first pressure relief valve 104 and a second pressure relief valve 107. One end of the first pressure relief valve 104 is connected to the pressure-building pipeline 115, and the other end is connected to a pressure relief discharge pipe 116. One end of the second pressure relief valve 107 is connected to the main evaporator coil assembly 108, and the other end is connected to the pressure relief discharge pipe 116. Both the first switching valve 105 and the second pressure relief valve 107 are designed to automatically relieve pressure when the pipeline pressure is too high, preventing system overpressure and accidents. The pressure relief discharge pipe 116 can also be connected to the engine to supply oxygen for fuel. For example, during aircraft flight, if the oxygen pressure rises due to a malfunction in the vaporization unit or a sudden change in oxygen demand, the first switching valve 105 and the second pressure relief valve 107 can quickly activate to release the excessive pressure, ensuring the safe operation of the entire oxygen supply system.

[0033] Based on the oxygen generator provided in the above embodiments, an oxygen generation method is provided, including: Step S1, Addition: Add liquid oxygen to the container and cool to the boiling point; Step S2, establish pressure: close the vent valve 103, liquid oxygen flows into the pressure coil assembly 106 to vaporize, and increase the internal pressure of the liquid oxygen container 101; Step S3, Oxygen Supply: Liquid oxygen flows into the main evaporator coil assembly 108, vaporizes, and is supplied to the aircraft oxygen system.

[0034] Specifically: Step S11, open the third switch valve 112, connect the purging device with the third switch valve 112, start purging the whole system pipeline, ensure the cleaning is completed, and then close the second switch valve 111; Step S12, insert the filling device into the pipeline adapter, at this time, the liquid oxygen enters the liquid oxygen container 101 through the flow regulating valve 110, since the initial temperature of the liquid oxygen container 101 is higher than the boiling point of the liquid oxygen, the liquid oxygen starts to vaporize and reduces the temperature of the liquid oxygen container 101, the vaporized oxygen is discharged through the oxygen delivery pipe 1013, the pressure building pipeline 115 to the evacuation valve 103, at this time, the first switch valve 105 is in a closed state; Step S13, observe the liquid level in the liquid oxygen container 101 by the liquid level detection assembly 102 until the required value is reached; Step S14, close the flow regulating valve 110 and the evacuation valve 103, from which the filling operation is completed.

[0035] Step S21, open the first switch valve 105 and the flow regulating valve 110, under the action of gravity and the principle of communicating vessels, the liquid oxygen in the liquid oxygen container 101 starts to flow into the pressure disc pipe assembly 106; Step S22, at this time, since the temperature of the pressure disc pipe assembly 106 is higher than the boiling point of the oxygen, the liquid oxygen will vaporize after entering the pressure disc pipe assembly 106, since the pressure disc pipe assembly 106 is connected with the oxygen delivery pipe 1013 through the first switch valve 105 at this time, the internal pressure of the pressure disc pipe assembly 106 and the liquid oxygen container 101 will start to rise; Step S23, after the internal pressure rises to a predetermined value, the pressure building is completed, and the excess oxygen will be discharged from the first pressure relief valve 104 when the pressure rises; Step S24, during the continuous output process, by adjusting the amount of liquid oxygen entering the pressure disc pipe assembly 106, the liquid oxygen in the pressure disc pipe assembly 106 is continuously evaporated to ensure a stable pressure.

[0036] Step S31, open the second switch valve 111, at this time, the liquid oxygen in the liquid oxygen container 101 is delivered to the main evaporation disc pipe assembly 108 under the action of pressure and vaporizes in the main evaporation disc pipe assembly 108; Step S32, after vaporization, it passes through the auxiliary evaporation disc pipe assembly (if any) and then is delivered to the aircraft system through the oxygen filter assembly 109.

[0037] The other parts of the embodiment are the same as the above-described embodiments and will not be described again.

[0038] The above is only a preferred embodiment of the present application, and does not limit the present application in any form, any simple modification or equivalent change made according to the technical essence of the present application to the above embodiment falls within the protection scope of the present application.

Claims

1. A high-efficiency liquid oxygen generator, characterized in that, include: Liquid oxygen storage unit, used to store liquid oxygen; A vaporization unit is used to vaporize the liquid oxygen output from the liquid oxygen storage unit; The pressure regulating unit is used to regulate pipeline pressure and stabilize the liquid oxygen supply. An oxygen output unit is used to output the oxygen produced by the vaporization unit for personnel use; The control system is used to monitor the generator's operating status and make real-time adjustments. The liquid oxygen storage unit is connected to the vaporization unit, the pressure regulating unit is located between the liquid oxygen storage unit and the vaporization unit, and the oxygen output unit is located at the rear end of the vaporization unit. The liquid oxygen storage unit, the vaporization unit, the pressure regulating unit, and the oxygen output unit are all connected to the control system signal.

2. The high-efficiency liquid oxygen generator according to claim 1, characterized in that: The liquid oxygen storage unit includes a liquid oxygen container (101), a liquid oxygen delivery pipe (1014) at the bottom of the liquid oxygen container (101) and an oxygen delivery pipe (1013) at the top. A flow regulating valve (110) is provided on the liquid oxygen delivery pipe (1014), and an air vent valve (103) is connected to the oxygen delivery pipe (1013). The flow regulating valve (110) is connected to a pipe adapter, and a second switch valve (111) and a third switch valve (112) are connected to different adapter ports of the pipe adapter. The other end of the second switch valve (111) is connected to the gasification unit, and the third switch valve (112) is used to inject liquid oxygen.

3. A high-efficiency liquid oxygen generator according to claim 2, characterized in that: The pressure regulating unit includes a pressure building pipe (115), a pressure coil assembly (106), and a first switching valve (105). The pressure building pipe (115) is connected to the oxygen delivery pipe (1013) and the vent valve (103) respectively. One end of the pressure coil assembly (106) is connected to the first switching valve (105), and the first switching valve (105) is connected to the pressure building pipe (115). The other end of the pressure coil assembly (106) is connected to the pipe adapter.

4. A high-efficiency liquid oxygen generator according to claim 3, characterized in that: The pressure regulating unit also includes a first pressure sensor (113) and a second pressure sensor (114). The first pressure sensor (113) is connected between the pressure coil assembly (106) and the pipe adapter. The second pressure sensor (114) is installed on the top of the liquid oxygen container (101). A temperature sensor is also installed inside the liquid oxygen container (101).

5. A high-efficiency liquid oxygen generator according to claim 4, characterized in that: The vaporization unit includes a main evaporation coil assembly (108), and the oxygen output unit includes an oxygen filter assembly (109). The main evaporation coil assembly (108) is connected to the second switching valve (111), and the oxygen filter assembly (109) is connected to the main evaporation coil assembly (108).

6. A high-efficiency liquid oxygen generator according to claim 5, characterized in that: The pressure regulating unit also includes a first pressure relief valve (104) and a second pressure relief valve (107). One end of the first pressure relief valve (104) is connected to the pressure building pipe (115), and the other end is connected to a pressure relief discharge pipe (116). One end of the second pressure relief valve (107) is connected to the main evaporator coil assembly (108), and the other end is connected to the pressure relief discharge pipe (116).

7. A high-efficiency liquid oxygen generator according to any one of claims 1-6, characterized in that: It also includes a heating unit for heating the gasification unit.

8. A high-efficiency liquid oxygen generator according to any one of claims 1-6, characterized in that: The vaporization unit also includes a secondary evaporation coil assembly, which is disposed between the main evaporation coil assembly (108) and the oxygen filter assembly (109), and the three are connected in series.

9. A high-efficiency liquid oxygen generator according to any one of claims 1-6, characterized in that: The liquid oxygen container (101) includes an inner layer (1011) and an outer layer (1012), with a vacuum gap provided between the inner layer (1011) and the outer layer (1012).

10. A high-efficiency liquid oxygen generator according to any one of claims 1-6, characterized in that: A liquid level detection component (102) is installed on the oxygen delivery pipe (1013), which is used to detect the liquid level height in the liquid oxygen container (101).

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