Miniaturized liquid atomization device and control method thereof

Abstract

The invention belongs to an atomization device, and provides a miniaturized liquid atomization device and a control method thereof in order to solve the technical problems that an existing cylinder valve is unchanged in replacement, low in safety and incapable of achieving zero leakage. The liquid cavity is communicated with the gas cavity through an on-off device, an atomizer device and a pressure controller in sequence, the gas cavity is communicated with the outside through a switch device and a pressure reducing device in sequence, an outlet of the pressure reducing device is communicated with the outside, and the on-off device, the atomizer device and the pressure controller are integrally arranged between the liquid cavity and the gas cavity. The switching device and the pressure reducing device are integrated at the gas cavity outlet. While the weight is reduced, the leakage risk is greatly reduced.

Description

Technical Field

[0001] This application pertains to an atomizing device, specifically a miniaturized liquid atomizing device and its control method. Background Technology

[0002] As a precision mechanical device integrating control, safety, and convenience, a bottle valve can provide an absolute seal when not in use, preventing gas or liquid leakage and ensuring long-term stable storage and transportation. While existing bottle valves are quite mature, some common and critical issues remain regarding reliability, safety, and practicality, such as seal failure or leakage, limitations of safety relief devices, unclear valve opening / closing status, and inconvenience in replacing residual gas inside the bottle. In some designs, it is difficult to determine whether the valve is fully open, fully closed, or slightly open simply by observing the handwheel position, thus posing operational safety hazards. Furthermore, because it is difficult to completely leak-free disassembly at the connection between the bottle valve and the pipeline, and the inconvenience in replacing residual gas inside the bottle, small amounts of toxic or rare / expensive gases may escape. Therefore, a bottle valve that is convenient, safe, leak-free, and easy to replace is a technical problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0003] This application addresses the technical problems of existing bottle valves, such as inconsistencies in replacement, low safety, and inability to achieve zero leakage, by providing a miniaturized liquid atomizing device and its control method.

[0004] To achieve the above objectives, this application adopts the following technical solution: In a first aspect, this application proposes a miniaturized liquid atomizing device for high-pressure fuel; including a tank; The inner cavity of the tank includes a liquid cavity and a gas cavity that are independently arranged. The liquid cavity and the gas cavity are connected in sequence through a switching device, an atomizing device and a pressure controller. The gas chamber is connected to the outside via a switching device and a pressure reducing device in sequence; the outlet of the pressure reducing device is connected to the outside. The on / off device, atomizing device, and pressure controller are integrated between the liquid chamber and the gas chamber; the switching device and pressure reducing device are integrated at the gas chamber outlet.

[0005] Furthermore, a filling valve is also provided at the inlet of the liquid chamber.

[0006] Furthermore, the switching device is a manually operated shut-off valve.

[0007] Furthermore, a partition is provided in the axial center of the inner cavity of the tank, and a gas chamber and a liquid chamber are formed on both sides of the partition respectively; the on / off device, the atomizing device and the pressure controller are all provided on the partition.

[0008] Furthermore, the pressure reducing device includes a two-stage pressure reducing valve.

[0009] Furthermore, it also includes pressure sensors; The detection end of the pressure sensor is connected to the inside of the gas chamber.

[0010] Furthermore, it also includes a composite housing; The combined housing is fitted over the switch, pressure reducing device and pressure sensor.

[0011] Secondly, this application proposes a control method for the aforementioned miniaturized liquid atomizing device, comprising: Perform the following steps under ground conditions: High-pressure fuel liquid is injected into the liquid chamber; When needed, the switching device is switched on, allowing the high-pressure fuel liquid in the liquid chamber to enter the gas chamber in a gaseous state after passing through the switching device, atomizing device, and pressure controller in sequence; the pressure controller controls the pressure distribution in the gas chamber. Turn on the switching device to allow the fuel gas in the gas chamber to be output sequentially through the switching device and the pressure reducing device.

[0012] Furthermore, it also includes: under on-orbit conditions, controlling the state of each component in the miniaturized liquid atomizing device according to the required operating state; the operating state includes safe state, liquid-to-gas state, and test state.

[0013] Furthermore, in the safe state, the switching device and the on / off device are in the off state, and the pressure inside the gas chamber is monitored; In the liquid-to-gas state, the on / off device is in the open state until the pressure in the gas chamber reaches the preset requirement, and then the on / off device is in the closed state after the pressure controller is turned off. Under the test conditions, the switching device is in the open state, and after the fuel gas supply is completed, the switching device is in the closed state.

[0014] Compared with the prior art, this application has the following beneficial effects: This application proposes a miniaturized liquid atomizing device. The inner cavity of the tank includes an independently arranged liquid chamber and a gas chamber. The liquid chamber and gas chamber are connected sequentially by a switching device, an atomizing device, and a pressure controller. The gas chamber is connected to the outside via a switching device and a pressure reducing device. The outlet of the pressure reducing device is connected to the outside. The switching device, atomizing device, and pressure controller are integrated between the liquid chamber and the gas chamber, while the switching device and pressure reducing device are integrated at the outlet of the gas chamber. This application integrates all valves and flow channels into the tank, reducing the overall size of the device. Simultaneously, it simplifies the device structure, reduces piping connections, and significantly reduces leakage risk while reducing weight. The gas chamber and liquid chamber are designed as a single structure, clearly defining functions while reducing the weight of the tank, and ensuring sufficient gas and liquid storage space. The device also includes a pressure controller. When the pressure in the gas chamber is low, the pressure controller opens to deliver gas; when the pressure in the gas chamber is high, the channel closes, ensuring stable gas chamber pressure and guaranteeing the safety of the entire device.

[0015] This application also proposes a control method for a miniaturized liquid atomizing device, which possesses all the advantages of the aforementioned miniaturized liquid atomizing device. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of a miniaturized liquid atomizing device in an embodiment of this application; Figure 2 for Figure 1 A schematic diagram after rotating 90°; Figure 3 This is a schematic diagram of the structure on the partition in the embodiments of this application; Figure 4 This is a cross-sectional view of the tank in an embodiment of this application; Figure 5 This is a schematic diagram of the principle of the miniaturized liquid atomizing device in the embodiments of this application.

[0018] Among them: 1-tank body, 2-filling valve, 3-first-stage pressure reducing valve, 4-combined housing, 5-electrical connector, 6-switching device, 7-pressure sensor, 8-second-stage pressure reducing valve, 9-outlet pipe, 10-on / off device, 11-atomizing device, 12-pressure controller, 13-liquid chamber, 14-gas chamber, 15-partition. Detailed Implementation

[0019] 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.

[0020] 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.

[0021] 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.

[0022] In the description of the embodiments of this application, it should be noted that if terms such as "upper," "lower," "horizontal," or "inner" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of the invention is in use, they are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this application. In addition, terms such as "first" and "second" are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0023] Furthermore, the use of the term "horizontal" does not imply that the component must be absolutely horizontal, but rather that it can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0024] In the description of the embodiments of this application, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0025] In the aerospace field, the development of on-orbit scientific experiments is gaining momentum. Various experiments, such as materials synthesis, combustion research, and scientific life science experiments, have become important vehicles for exploring the mysteries of space and promoting technological progress. These experiments often have specific requirements for working fluids or fuels, necessitating the conversion of liquid working fluids or fuels into micron or even submicron-sized droplets. These finely atomized droplets better meet the requirements for reaction efficiency and supply precision in experiments, making them a key element in ensuring the smooth conduct of on-orbit experiments. Currently, on-orbit platforms such as microsatellites and space station experimental modules are the main carriers for these experiments, and their application scenarios are constantly expanding.

[0026] There is a significant contradiction between the core requirements of liquid atomization in on-orbit scientific experiments and the inherent characteristics of on-orbit platforms. On the one hand, experiments require stable and reliable liquid atomization to ensure that droplet size meets requirements; on the other hand, on-orbit platforms such as microsatellites and space station experimental modules generally suffer from limited space, placing extremely high demands on the miniaturization, lightweighting, and high integration of onboard equipment. Furthermore, the unique nature of the space environment requires high reliability and safety from the equipment, making traditional liquid atomization solutions difficult to directly adapt to on-orbit applications. Therefore, how to meet the stringent requirements of the platform while satisfying the atomization requirements has become an urgent problem to be solved.

[0027] Currently, liquid atomization mainly relies on mature atomization devices used in ground-based applications. These devices are designed around ground-based usage requirements, distributing components such as storage units for the liquid working fluid or fuel, pressurization units providing power, delivery units for the working fluid, and atomization units for atomization. These units are connected by pipelines to form a complete system, thus achieving liquid atomization. Simultaneously, to address the pressure difference between storage and use of the liquid working fluid or fuel, these devices typically incorporate pressure reducing devices. This reduces the high-pressure gas used during storage to reduce volume and weight, providing a stable low-pressure gas source required for final atomization, ensuring pressure stability throughout the atomization process.

[0028] However, these ground-based atomizing devices have significant limitations when applied to in-orbit scenarios. Firstly, their system size and integration are insufficient. The distributed layout and connecting pipes not only occupy a large amount of the limited space on the in-orbit platform but also result in low system integration due to numerous interfaces, failing to meet the core requirements of miniaturization and lightweight in-orbit equipment. The complex piping design also increases the risk of working fluid leakage. Secondly, the adaptability of pressure reduction and control is inadequate. While pressure reduction devices in ground environments can achieve pressure regulation, their pressure stability and environmental adaptability are difficult to guarantee in the special environment of space, failing to fully meet the stringent requirements of in-orbit testing. Thirdly, reliability and safety are difficult to meet standards. Traditional systems contain multiple valves and interfaces, which become potential failure points in the vacuum and microgravity environment of space, severely impacting the long-term use of the device. Especially for flammable and volatile liquefied gas fuels, the complex system structure significantly increases the probability of seal failure, posing a significant safety hazard and completely failing to meet the high reliability and safety requirements of in-orbit devices.

[0029] Based on the above, this application proposes a miniaturized liquid atomizing device and its control method. The following is a detailed description of this application in conjunction with the embodiments and accompanying drawings.

[0030] As an embodiment of the miniaturized liquid atomizing device of this application, used for high-pressure fuel, it may include a tank 1. The inner cavity of the tank 1 includes a liquid chamber 13 and a gas chamber 14 that are independently arranged, and the liquid chamber 13 and the gas chamber 14 are connected in sequence by a switching device 10, an atomizing device 11, and a pressure controller 12. The gas chamber 14 is connected to the outside in sequence by a switching device 6 and a pressure reducing device. The outlet of the pressure reducing device is connected to the outside. The switching device 10, the atomizing device 11, and the pressure controller 12 are integrated between the liquid chamber 13 and the gas chamber 14. The switching device 6 and the pressure reducing device are integrated at the outlet of the gas chamber 14.

[0031] The tank 1, as the core load-bearing component of the entire device, provides independent liquid and gas storage spaces, achieving isolated storage of high-pressure fuel and driving gas to ensure storage safety. The tank 1, through its internal cavity partitioning design, provides the installation foundation for subsequent components such as on / off, atomization, and pressure control. The on / off device 10 controls the opening or closing of the fluid passage between the liquid chamber 13 and the gas chamber 14, realizing the start / stop control of high-pressure fuel atomization. The on / off device 10 ensures the sealing of the liquid chamber 13 in the non-operating state and accurately conducts fluid during operation. The atomizing device 11 converts the high-pressure fuel output from the liquid chamber 13 into micron or submicron-sized droplets that meet experimental requirements, achieving liquid atomization. The atomizing device 11 is located between the on / off device 10 and the pressure controller 12, receiving the high-pressure fuel conducted by the on / off device 10, completing atomization, and then transporting the droplets to subsequent stages. Simultaneously, it works with the pressure controller 12 to adjust the atomization effect. In practical applications, the specific atomizing device 11 structure can be selected according to the requirements of the system. The pressure controller 12 monitors the fluid pressure between the liquid chamber 13 and the gas chamber 14 in real time. By adjusting the pressure, it stabilizes the pressure environment during atomization, ensuring uniform droplet size. The pressure controller 12 is connected in series between the atomizing device 11 and the gas chamber 14. On the one hand, it buffers the pressure input to the gas chamber 14; on the other hand, it provides feedback on pressure changes during atomization, dynamically adjusting pressure parameters to prevent pressure fluctuations from deteriorating the atomization effect. The switching device 6 controls the connection between the gas chamber 14 and the outside, enabling the access or disconnection of the external gas source. It also ensures the gas chamber 14 is sealed when not in operation, preventing high-pressure gas from entering disorderly and causing abnormal pressure within the chamber. The pressure reducing device reduces the externally input high-pressure gas to a set low pressure value, providing a stable low-pressure gas source for terminal atomization. It also prevents the direct emission of high-pressure gas from causing safety risks. Through the pressure reducing device, both pressure regulation of the gas chamber 14 and pressure stability during the exhaust process are achieved.

[0032] This application significantly improves integration and miniaturization by integrating traditionally distributed storage, control, atomization, and pressure reduction units into a single unit. This reduces the number of pipe connections and interfaces, drastically reducing the size and weight of the device, making it perfectly suited for space-constrained on-orbit platforms such as microsatellites and space station experimental modules. Simultaneously, it enhances reliability and safety. The integrated design reduces potential failure points, and the independent liquid chamber 13 and gas chamber 14 design prevent direct contact between high-pressure fuel and gas. Combined with the stable pressure reduction of the pressure reducing device and the sealed control of the on / off device 10 and the switching device 6, the risk of leakage and seal failure is reduced, making it particularly suitable for applications involving flammable and volatile high-pressure fuels. Furthermore, through the coordinated operation of the pressure controller 12 and the atomizing device 11, the uniformity of the atomized droplet size is ensured, and the stable high-pressure to low-pressure conversion is achieved through the pressure reducing device, solving the problem of pressure fluctuations affecting atomization performance in traditional devices.

[0033] The present application will be further described in detail below through some more specific embodiments. For example... Figure 1 The diagram shown is a schematic of a miniaturized liquid atomizing device according to this application. Figure 2 for Figure 1 A schematic diagram after rotating 90°.

[0034] In some embodiments of this application, a filling valve 2 is also provided at the inlet of the liquid chamber 13. The filling valve 2 serves as a dedicated interface component for injecting high-pressure fuel into the liquid chamber 13, enabling safe and rapid fuel filling, and simultaneously providing a reliable seal after filling to prevent high-pressure fuel leakage from the liquid chamber 13. In practical applications, one end of the filling valve 2 is connected to an external fuel filling device, and the other end is directly connected to the liquid chamber 13.

[0035] Specifically, the on / off device 10 is a manually operated shut-off valve. The pressure reducing device includes a two-stage pressure reducing valve, namely a first pressure reducing valve and a second pressure reducing valve. Through a two-stage step-by-step pressure reducing method, the high-pressure gas output from the gas chamber 14 is gradually reduced to the stable low pressure required at the terminal. Compared with a single-stage pressure reducing valve, it has the characteristics of higher pressure reducing accuracy, smaller outlet pressure fluctuation, and stronger impact resistance, which is suitable for the stringent requirements of low-pressure gas source stability in on-orbit scenarios.

[0036] In other embodiments of this application, a pressure sensor 7 is also included, with its detection end connected to the interior of the gas chamber 14. The pressure sensor 7 can accurately collect pressure data inside the gas chamber 14, providing real-time pressure feedback for the pressure reduction adjustment of the two-stage pressure reducing valve and the on / off control of the switching device 6, avoiding safety risks caused by excessively high or low pressure in the gas chamber 14, while ensuring pressure stability during the atomization process.

[0037] like Figure 3 The diagram shown is a structural schematic of the partition. Figure 4The diagram shows a cross-sectional view of the tank. To facilitate miniaturization, in some embodiments of this application, the structure of the tank 1 is optimized. A partition 15 is provided in the axial center of the inner cavity of the tank 1, forming a gas chamber 14 and a liquid chamber 13 on either side of the partition 15. The switching device 10, atomizing device 11, and pressure controller 12 are all mounted on the partition 15. A combined housing 4 is fitted over the switching device 6, pressure reducing device, and pressure sensor 7. The partition 15, as a rigid dividing component inside the tank 1, divides the inner cavity of the tank 1 axially into independent gas chambers 14 and liquid chambers 13. This ensures the isolation and sealing of the two chambers and provides an integrated mounting base for the core functional components, eliminating the need for additional supports or piping connections for other components and significantly shortening the fluid path length. The combined housing 4 provides physical protection, sealing, dustproofing, and integrated fixation for the switching device 6, pressure reducing device, and pressure sensor 7, while reducing the space occupied by the dispersed components. The three dispersed components are integrated and packaged into a modular unit, which is then connected to the outlet of the gas chamber 14, achieving integrated packaging of multiple components and simplifying external connection interfaces.

[0038] like Figure 5 The diagram shows the principle of the miniaturized liquid atomizing device of this application. Under ground conditions, high-pressure fuel liquid can be added to the liquid chamber 13 via the filling valve 2 using ground equipment, thus achieving high-pressure fuel liquid storage. The outlet of the high-pressure fuel liquid chamber 13 is equipped with a manual shut-off valve, which is opened by the operator during operation to output high-pressure fuel liquid, and closed by the operator when not in operation, allowing the high-pressure fuel liquid to be stored in the liquid chamber 13. A liquid atomizing nozzle is installed after the manual shut-off valve to atomize the high-pressure fuel liquid output from the high-pressure fuel liquid phase bottle and deliver it to the pressure controller 12, after which it enters the gas cylinder. The pressure controller 12 can control the pressure in the gas chamber 14. When the pressure in the gas chamber 14 is less than 0.5 MPa, the pressure controller 12 opens to deliver gas. When the pressure in the gas chamber 14 is greater than 0.5 MPa, the channel is closed. In addition, a pressure sensor 7 is installed at the outlet of the gas chamber 14 to monitor the remaining fuel gas. A solenoid valve is also installed, which opens during operation to output fuel gas and closes when not in operation, allowing the fuel gas to be stored in the gas chamber 14. The high-pressure fuel gas then enters the pressure reducing valve, where it is reduced and stabilized to the low-pressure set pressure before being supplied downstream.

[0039] Accordingly, this application also proposes a control method for the above-mentioned miniaturized liquid atomizing device, which may include: Perform the following steps under ground conditions: (1) Add high-pressure fuel liquid to the liquid chamber 13.

[0040] Fuel storage is completed in a ground environment to avoid the limitation of no refueling conditions in orbit. At the same time, ground equipment is used to ensure the safety and sealing of high-pressure refueling, providing a sufficient fuel source for subsequent in-orbit atomization. After refueling, the liquid chamber 13 is sealed by the refueling valve 2 to maintain a high-pressure state.

[0041] (2) When it is needed to work, the on / off device 10 is in the connected state, so that the high-pressure fuel liquid in the liquid chamber 13 passes through the on / off device 10, the atomizing device 11 and the pressure controller 12 in sequence and enters the gas chamber 14 in the gas state; wherein, the pressure distribution in the gas chamber 14 is controlled by the pressure controller 12.

[0042] The atomization process is started by opening the manual shut-off valve. After the fuel is converted into tiny droplets by the atomizing device 11, it is vaporized under pressure and enters the gas chamber 14. The pressure controller 12 synchronously adjusts the pressure of the gas chamber 14 to ensure uniform pressure distribution. Atomization and pressure control are carried out simultaneously to avoid pressure fluctuations affecting the atomization effect.

[0043] (3) Turn on the switch device 6 so that the fuel gas in the gas chamber 14 is output through the switch device 6 and the pressure reducing device in sequence.

[0044] The gas output path is opened by switching device 6, and the two-stage pressure reducing valve reduces the high-pressure fuel gas to the set low pressure in stages, ensuring the pressure of the output gas is stable, meeting the requirements of on-orbit testing, and ensuring that the output gas meets the test parameter requirements.

[0045] Here is an example of how this application is used: In this embodiment, propane is used as the working medium. The tank 1 is a single piece, internally divided into two chambers: a liquid chamber 13 and a gas chamber 14. A filling valve 2 is connected to the end of the liquid chamber 13, allowing liquid to be added into it. A solid section, or partition 15, separates the liquid chamber 13 and the gas chamber 14, and a manual shut-off valve, an atomizing nozzle, and a pressure controller 12 are arranged on the partition 15. The channel between the manual shut-off valve, the atomizing nozzle, and the pressure controller 12 is formed using 3D printing. A combination valve is arranged at the outlet of the gas chamber 14. Specifically, the combination valve may include a valve body, a pressure sensor 7, a switching device 6, an electrical connector 5, a primary pressure reducing valve 3, a secondary pressure reducing valve 8, and an outlet pipe 9. The electrical connector 5 supplies power to the solenoid valve 6 (which acts as the switching device) when energized. The outlet pipe 9 is connected after the pressure reducing device for gas output.

[0046] Under ground conditions, high-pressure fuel liquid can be added to the liquid chamber 13 using the filling valve 2. After filling is complete, the filling valve 2 is closed, and the liquid chamber 13 stores the high-pressure fuel liquid. A manual shut-off valve is connected to the outlet of the liquid chamber 13. During operation, the operator opens the valve to output high-pressure fuel liquid; when not in operation, the operator closes the valve to store the high-pressure fuel liquid in the liquid chamber 13. The outlet of the manual shut-off valve is connected to an atomizing nozzle, which sprays the high-pressure fuel liquid output from the liquid chamber 13 into the gas chamber 14. A pressure controller 12 is connected between the atomizing nozzle and the gas chamber 14 to control the pressure distribution in the gas chamber 14. For example, when the pressure in the gas chamber 14 is less than 0.5 MPa, the pressure controller 12 opens to deliver gas; when the pressure in the gas chamber 14 is greater than 0.5 MPa, the pressure controller 12 automatically closes, and the atomization channel is shut off. A pressure sensor 7 is installed in the gas chamber 14 to monitor the remaining fuel gas level. A solenoid valve is installed at the outlet of gas chamber 14. It opens during operation to output fuel gas and closes when not in operation, storing the fuel gas in gas chamber 14. A primary and secondary pressure reducer are connected after the solenoid valve. After the high-pressure gas is reduced to the required pressure by the two pressure reducers, it is output through outlet pipe 9 for downstream testing. In practical applications, the solenoid valve can have a built-in filter to prevent impurities carried by the gas from damaging downstream components. All components in this application are integrated into a single design, allowing for complete installation and replacement. A grounding connection cable can also be designed.

[0047] In practical applications, during the on-orbit operation of the atomizing device, depending on the working status, it can be divided into safety mode, liquid-to-gas mode, and test mode, specifically: (1) Safety mode: When the device is not needed for a long time, it can be set to standby mode, so that the solenoid valve and manual shut-off valve are closed, and the pressure sensor 7 parameters are collected to monitor the working status.

[0048] (2) Liquid to gas mode: Open the manual shut-off valve of the liquid chamber 13 to charge the gas chamber 14 from the liquid chamber 13. When the pressure of the gas chamber 14 reaches 0.5 MPa, the pressure controller 12 will automatically close and the manual shut-off valve will be closed. The gas chamber 14 will be charged.

[0049] (3) Test mode: When a test is required, open the solenoid valve of the gas chamber 14 to supply gas, and close the solenoid valve after use.

[0050] This application proposes a highly integrated, compact, and miniaturized liquid atomizing device that can adapt to the microgravity environment of space and reliably realize liquid fuel storage, gas-liquid separation, depressurization, and stable atomization supply. This atomizing device can meet the needs of liquefied gas fuel storage, gas-liquid separation, depressurization, and supply under space-constrained conditions.

[0051] The above are merely preferred embodiments of this application and are not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A miniaturized liquid atomizing device for high-pressure fuel; characterized in that, Including the tank body (1); The inner cavity of the tank (1) includes a liquid cavity (13) and a gas cavity (14) that are independently arranged. The liquid cavity (13) and the gas cavity (14) are connected in sequence through a switching device (10), an atomizing device (11) and a pressure controller (12). The gas chamber (14) is connected to the outside via a switching device (6) and a pressure reducing device in sequence; the outlet of the pressure reducing device is connected to the outside. The on / off device (10), atomizing device (11) and pressure controller (12) are integrated between the liquid chamber (13) and the gas chamber (14); the switching device (6) and pressure reducing device are integrated at the outlet of the gas chamber (14).

2. The miniaturized liquid atomizing device according to claim 1, characterized in that, A filling valve (2) is also provided at the inlet of the liquid chamber (13).

3. The miniaturized liquid atomizing device according to claim 1, characterized in that, The on / off device (10) is a manual shut-off valve.

4. The miniaturized liquid atomizing device according to claim 1, characterized in that, A partition (15) is provided in the axial middle of the inner cavity of the tank (1), and a gas chamber (14) and a liquid chamber (13) are formed on both sides of the partition (15); the on / off device (10), the atomizing device (11) and the pressure controller (12) are all provided on the partition (15).

5. The miniaturized liquid atomizing device according to claim 1, characterized in that, The pressure reducing device includes a two-stage pressure reducing valve.

6. The miniaturized liquid atomizing device according to claim 1, characterized in that, It also includes a pressure sensor (7); The detection end of the pressure sensor (7) is connected to the inside of the gas chamber (14).

7. The miniaturized liquid atomizing device according to claim 1, characterized in that, It also includes a combined housing (4); The combined housing (4) is fitted over the switch device (6), the pressure reducing device and the pressure sensor (7).

8. A control method for a miniaturized liquid atomizing device according to any one of claims 1 to 7, characterized in that, include: Perform the following steps under ground conditions: High-pressure fuel liquid is injected into the liquid chamber (13); When needed, the switching device (10) is switched on, so that the high-pressure fuel liquid in the liquid chamber (13) passes through the switching device (10), the atomizing device (11) and the pressure controller (12) in sequence and enters the gas chamber (14) in a gaseous state; wherein, the pressure distribution in the gas chamber (14) is controlled by the pressure controller (12); Turn on the switch (6) so that the fuel gas in the gas chamber (14) is output sequentially through the switch (6) and the pressure reducing device.

9. The control method for the miniaturized liquid atomizing device according to claim 8, characterized in that, Also includes: Under on-orbit conditions, the status of each component in the miniaturized liquid atomizing device is controlled according to the required operating conditions; The operating states include safe state, liquid-to-gas conversion state, and test state.

10. The control method for the miniaturized liquid atomizing device according to claim 9, characterized in that: Under the aforementioned safe condition, the switching device (6) and the on / off device (10) are in the closed state, and the pressure inside the gas chamber (14) is monitored; In the liquid-to-gas state, the on / off device (10) is in the open state until the pressure in the gas chamber (14) reaches the preset requirement. After the pressure controller (12) is closed, the on / off device (10) is in the closed state. Under the test conditions, the switch device (6) is in the open state, and after the fuel gas supply is completed, the switch device (6) is in the closed state.

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