Program temperature control liquid flow feed-out and recovery device and method for vacuum environment

Abstract

The invention discloses a program temperature control liquid flow feed-out and recovery device and method for a vacuum environment. The program temperature control liquid flow feed-out and recovery device for the vacuum environment comprises a vacuum cavity; the capturing head is arranged in the vacuum cavity; a capture head heating device; the inner guide pipe is arranged in the vacuum cavity and is connected with the capturing head; an inner conduit heating device; the outer guide pipe is arranged outside the vacuum cavity and is connected with the inner guide pipe; an outer conduit heating device; the controller is electrically connected with the capturing head heating device, the inner catheter heating device and the outer catheter heating device so as to independently control the heating temperature of the capturing head heating device, the heating temperature of the inner catheter heating device and the heating temperature of the outer catheter heating device. The program temperature control liquid flow feed-out and recovery device for the vacuum environment has the advantages of being not prone to freezing and blocking, high in applicability and the like.

Description

Technical Field

[0001] This invention relates to the field of precision instrument technology, and more specifically, to a programmable temperature-controlled liquid flow feed and recovery device and method for use in a vacuum environment. Background Technology

[0002] To resolve chemical reaction kinetics, biomolecular conformations, and solvation effects in liquids at the atomic scale, techniques such as electron diffraction, X-ray diffraction, or photoelectron spectroscopy are employed to probe liquid samples. Such experiments require the generation and maintenance of stable liquid samples within the ultra-high vacuum environment necessary to sustain electron or photon beam transmission.

[0003] Therefore, microfluidic chips are needed to generate micron-scale liquid jets that are injected into the vacuum chamber. In order to maintain the vacuum level and protect the expensive electro-optical components, the jet must be captured and removed from the vacuum chamber quickly after passing the detection point.

[0004] In related technologies, liquid flow feed devices suffer from two main problems. First, when liquids flow at high speeds under high vacuum, violent "flash evaporation" occurs. The evaporation of latent heat removes a large amount of heat, causing the liquid temperature to drop sharply within milliseconds. This makes it extremely easy for the liquid to freeze instantly at the capture port or in the transmission pipeline, leading to physical blockage. Second, these devices lack adaptability to high-melting-point solvents. Organic solvents with freezing points close to room temperature are prone to re-freezing in the transmission pipeline at room temperature after flowing out of the vacuum chamber, causing blockage at the downstream end. Summary of the Invention

[0005] The present invention aims to at least solve one of the technical problems existing in the prior art. To this end, the present invention proposes a programmable temperature-controlled liquid flow feed and recovery device for vacuum environments, which has the advantages of being less prone to freezing and clogging, and having strong applicability.

[0006] The present invention also proposes a programmable temperature-controlled liquid flow feed-out and recovery method for use in a vacuum environment.

[0007] To achieve the above objectives, according to an embodiment of the first aspect of the present invention, a programmable temperature-controlled liquid flow feed and recovery device for a vacuum environment is provided. The programmable temperature-controlled liquid flow feed and recovery device for a vacuum environment includes: a vacuum chamber adapted to form a vacuum environment, the vacuum chamber adapted to house a liquid jet device adapted to generate a liquid jet; a capture head disposed within the vacuum chamber and adapted to capture the liquid jet; a capture head heating device disposed on the capture head; an inner conduit disposed within the vacuum chamber and connected to the capture head; an inner conduit heating device disposed on the inner conduit; an outer conduit disposed outside the vacuum chamber and connected to the inner conduit; an outer conduit heating device disposed on the outer conduit; and a controller electrically connected to the capture head heating device, the inner conduit heating device, and the outer conduit heating device respectively to independently control the heating temperatures of the capture head heating device, the inner conduit heating device, and the outer conduit heating device.

[0008] The programmed temperature-controlled liquid flow feed and recovery device for vacuum environments according to embodiments of the present invention has advantages such as being less prone to freezing and clogging, and having strong applicability.

[0009] In addition, the programmed temperature-controlled liquid flow feed and recovery device for a vacuum environment according to the above embodiments of the present invention may also have the following additional technical features: According to one embodiment of the present invention, the programmed temperature-controlled liquid flow feed and recovery device for a vacuum environment further includes: a capture head temperature measuring device, which is disposed on the capture head and electrically connected to the controller, the controller being adapted to control the heating temperature of the capture head heating device according to the detection value of the capture head temperature measuring device; an inner conduit temperature measuring device, which is disposed on the inner conduit and electrically connected to the controller, the controller being adapted to control the heating temperature of the inner conduit heating device according to the detection value of the inner conduit temperature measuring device; and an outer conduit temperature measuring device, which is disposed on the outer conduit and electrically connected to the controller, the controller being adapted to control the heating temperature of the outer conduit heating device according to the detection value of the outer conduit temperature measuring device.

[0010] According to an embodiment of the present invention, the programmed temperature-controlled liquid flow feed and recovery device for a vacuum environment further includes: a waste liquid collection container, wherein one end of the outer conduit away from the inner conduit is connected to the waste liquid collection container; and a vacuum pumping device, which is connected to the waste liquid collection container and is adapted to create a low vacuum environment inside the waste liquid collection container.

[0011] According to one embodiment of the present invention, the programmed temperature-controlled liquid flow feed and recovery device for a vacuum environment further includes a cold trap, and the waste liquid collection container is disposed in the cold trap.

[0012] According to one embodiment of the present invention, the programmed temperature-controlled liquid flow feed and recovery device for a vacuum environment further includes a pressure sensor connected between the waste liquid collection container and the vacuum pumping device.

[0013] According to one embodiment of the present invention, the lower end of the capture head is provided with a conduit hole, the upper end of the inner conduit is fitted into the conduit hole, the upper end of the capture head is provided with a capture hole, the capture hole is adapted to capture the liquid jet, and the upper end face of the capture head is constructed as a conical surface with a diameter that gradually increases from top to bottom.

[0014] According to one embodiment of the present invention, a connecting portion is formed on the peripheral surface of the capture head, and a mounting hole is provided on the connecting portion. The heating device of the capture head is an electric heating rod and is fitted into the mounting hole.

[0015] According to one embodiment of the present invention, the capture head is a thermally conductive material component.

[0016] According to one embodiment of the present invention, the inner conduit heating device is a flexible electric heating strip wrapped around the outer conduit, and the outer conduit heating device is a flexible electric heating strip wrapped around the outer conduit.

[0017] According to a second aspect of the present invention, a method for programmable temperature-controlled liquid flow feed-out and recovery in a vacuum environment is provided. The method employs the programmable temperature-controlled liquid flow feed-out and recovery device for a vacuum environment described in a first aspect of the present invention, and includes the following steps: Before the liquid jet device generates a liquid jet, the controller controls the capture head heating device, the inner conduit heating device, and the outer conduit heating device to heat the capture head, the inner conduit, and the outer conduit to a predetermined preheating temperature, which is greater than the melting point of the solvent in the liquid jet. During the experiment, the controller controls the capture head heating device, the inner conduit heating device, and the outer conduit heating device to maintain the capture head, the inner conduit, and the outer conduit at a predetermined experimental temperature, which is greater than the melting point of the solvent in the liquid jet. After the experiment, the controller controls the capture head heating device, the inner conduit heating device, and the outer conduit heating device to heat the capture head, the inner conduit, and the outer conduit to a predetermined vaporization temperature, which is greater than the boiling point of the solvent in the liquid jet.

[0018] The programmed temperature-controlled liquid flow feed and recovery method for vacuum environments according to embodiments of the present invention, by utilizing the programmed temperature-controlled liquid flow feed and recovery device for vacuum environments described in the first aspect of the present invention, has advantages such as being less prone to freezing and clogging, and having strong applicability.

[0019] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0020] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which: Figure 1 This is a schematic diagram of a programmable temperature-controlled liquid flow feed and recovery device for a vacuum environment according to an embodiment of the present invention.

[0021] Figure 2 This is a schematic diagram of the capture head of a programmable temperature-controlled liquid flow feed and recovery device for a vacuum environment according to an embodiment of the present invention.

[0022] Figure 3 This is a cross-sectional view of the capture head of a programmable temperature-controlled liquid flow feed and recovery device for a vacuum environment according to an embodiment of the present invention.

[0023] Figure 4 This is a partial cross-sectional view of the capture head of a programmable temperature-controlled liquid flow feed and recovery device for a vacuum environment according to an embodiment of the present invention.

[0024] Figure 5 This is a schematic diagram of the capture head of a programmable temperature-controlled liquid flow feed and recovery device for a vacuum environment according to an embodiment of the present invention.

[0025] Figure 6 This is a flowchart of a programmed temperature-controlled liquid flow feed-out and recovery method for a vacuum environment according to an embodiment of the present invention.

[0026] Reference numerals: 1. Programmable temperature-controlled liquid flow feed and recovery device for vacuum environment; 2. Vacuum chamber; 3. Capture head; 4. Capture hole; 5. Conduit hole; 6. Transition section; 7. Connecting part; 8. Mounting hole; 9. Inner conduit; 10. Outer conduit; 11. Waste liquid collection container; 12. Vacuum pumping device; 13. Pressure sensor; 14. On / off valve; 15. Liquid jet device; 16. Liquid jet; 17. Liquid jet. Detailed Implementation

[0027] This application is based on the findings and understanding of the following facts and issues: In related technologies, liquid flow feed devices suffer from two main problems. First, when liquids flow at high speeds under high vacuum, violent "flash evaporation" occurs. The evaporation of latent heat removes a large amount of heat, causing the liquid temperature to drop sharply within milliseconds. This makes it extremely easy for the liquid to freeze instantly at the capture port or in the transmission pipeline, leading to physical blockage. Second, these devices lack adaptability to high-melting-point solvents. Organic solvents with freezing points close to room temperature are prone to re-freezing in the transmission pipeline at room temperature after flowing out of the vacuum chamber, causing blockage at the downstream end.

[0028] The liquid feedout device in the related technology has a single heating area, which only heats the capture head and cannot cover the subsequent long-distance transmission pipeline. This can easily cause the liquid to solidify again due to radiative heat dissipation during the outflow. In addition, there may be a temperature difference between the capture head, the pipeline inside the vacuum chamber and the pipeline outside the vacuum chamber in the indoor environment, which can easily cause the liquid to freeze and become blocked during the flow.

[0029] Furthermore, the liquid feedout device in the related technology relies solely on gravity or a simple pressure difference to recover the captured liquid, which is prone to generating air resistance. Moreover, the saturated vapor pressure in the waste liquid collection bottle can easily backflow into the main vacuum chamber, disrupting the vacuum level required for the experiment.

[0030] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0031] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing the invention 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 of the invention. Furthermore, features defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, unless otherwise stated, "a plurality of" means two or more. In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" 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 invention according to the specific circumstances.

[0032] The following description, with reference to the accompanying drawings, describes a programmed temperature-controlled liquid flow feed and recovery device 1 for a vacuum environment according to an embodiment of the present invention.

[0033] like Figures 1-6 As shown, the programmed temperature-controlled liquid flow feed and recovery device 1 for a vacuum environment according to an embodiment of the present invention includes a vacuum chamber 10, a capture head 20, a capture head heating device, an inner conduit 30, an inner conduit heating device, an outer conduit 40, an outer conduit heating device, and a controller.

[0034] The vacuum chamber 10 is adapted to create a vacuum environment and is adapted to accommodate a liquid jet device 2, which is adapted to generate a liquid jet 3. A capture head 20 is disposed within the vacuum chamber 10 and is adapted to capture the liquid jet 3. A heating device for the capture head is disposed on the capture head 20. An inner conduit 30 is disposed within the vacuum chamber 10 and connected to the capture head 20. A heating device for the inner conduit is disposed on the inner conduit 30. An outer conduit 40 is disposed outside the vacuum chamber 10 and connected to the inner conduit 30. A heating device for the outer conduit is disposed on the outer conduit 40. A controller is electrically connected to the capture head heating device, the inner conduit heating device, and the outer conduit heating device respectively to independently control the heating temperatures of the capture head heating device, the inner conduit heating device, and the outer conduit heating device.

[0035] Specifically, the controller can control the capture head heating device, the inner conduit heating device, and the outer conduit heating device to be in preheating mode, experimental mode, and baking mode.

[0036] Before the experiment begins, the controller puts the capture head heating device, the inner conduit heating device, and the outer conduit heating device into preheating mode. Before the liquid jet device 2 generates the liquid jet 3, the controller controls the capture head heating device, the inner conduit heating device, and the outer conduit heating device to heat the capture head 20, the inner conduit 30, and the outer conduit 40 to a predetermined preheating temperature, which is greater than the melting point of the solvent in the liquid jet 3. For example, it is 20-50 degrees higher than the melting point to prevent the liquid jet 3 from freezing upon contact with the capture head 20.

[0037] During the experiment, the controller keeps the capture head heating device, the inner conduit heating device, and the outer conduit heating device in experimental mode. The controller maintains the capture head 20, inner conduit 30, and outer conduit 40 at a predetermined experimental temperature, which is higher than the melting point of the solvent in the liquid jet. During the experiment, as the liquid flows through the capture head 20, inner conduit 30, and outer conduit 40, heat is gradually carried away. The controller can automatically increase the heating power using a PID algorithm to maintain a constant temperature and prevent freezing.

[0038] After the experiment, the controller puts the capture head heating device, the inner conduit heating device, and the outer conduit heating device into a baking mode. The controller controls the capture head heating device, the inner conduit heating device, and the outer conduit heating device to heat the capture head, the inner conduit, and the outer conduit to a predetermined vaporization temperature. The predetermined vaporization temperature is greater than the boiling point of the solvent in the liquid jet, for example, greater than 100 degrees Celsius, to completely vaporize and discharge any trace amounts of liquid remaining in the capture head 20, the inner conduit 30, and the outer conduit 40, preventing cross-contamination and blockage after long-term inactivity of the pipeline.

[0039] According to an embodiment of the present invention, the programmable temperature-controlled liquid flow feed and recovery device 1 for a vacuum environment can heat the capture head 20, the inner conduit 30, and the outer conduit 40 respectively by setting a capture head heating device, an inner conduit heating device, and an outer conduit heating device. Compared with liquid flow feed devices in related technologies that only heat a single structure, this device can achieve full-process, dead-angle-free, and full-coverage heating of the liquid from capture to transportation to collection, preventing cold spots from freezing and causing blockages due to the inability of a single heating position to cover long-distance pipelines.

[0040] Furthermore, by setting a controller, which is electrically connected to the capture head heating device, the inner conduit heating device, and the outer conduit heating device respectively, to independently control the heating temperature of the capture head heating device, the inner conduit heating device, and the outer conduit heating device, it is convenient to control the temperature of the capture head 20, the inner conduit 30, and the outer conduit 40. This facilitates the adaptability of the programmable temperature-controlled liquid flow feed and recovery device 1 for the entire experimental process in a vacuum environment. It can also avoid the temperature difference between the capture head 20 and the inner and outer parts of the vacuum chamber 10 caused by the temperature difference, thus preventing the temperature from being too low or too high at any stage of the liquid flow process.

[0041] Therefore, it not only facilitates the long-term continuous operation of the temperature-controlled liquid flow feed and recovery device 1 for use in vacuum environments, avoiding freezing and blockage during long-term continuous operation, but also allows the temperature-controlled liquid flow feed and recovery device 1 for use in vacuum environments to be compatible with complex solvent systems with high melting points, high viscosity and easy crystallization, thus broadening the sample application range of the temperature-controlled liquid flow feed and recovery device 1 for use in vacuum environments.

[0042] Therefore, the programmed temperature-controlled liquid flow feed and recovery device 1 for vacuum environment according to the present invention has advantages such as being less prone to freezing and clogging and having strong applicability.

[0043] The following description, with reference to the accompanying drawings, describes a programmed temperature-controlled liquid flow feed and recovery device 1 for a vacuum environment according to a specific embodiment of the present invention.

[0044] In some specific embodiments of the present invention, such as Figures 1-6 As shown, the programmed temperature-controlled liquid flow feed and recovery device 1 for a vacuum environment according to an embodiment of the present invention includes a vacuum chamber 10, a capture head 20, a capture head heating device, an inner conduit 30, an inner conduit heating device, an outer conduit 40, an outer conduit heating device, and a controller.

[0045] Specifically, the programmable temperature-controlled liquid flow feed-and-recovery device 1 for a vacuum environment further includes a capture head temperature measuring device, an inner conduit temperature measuring device, and an outer conduit temperature measuring device. The capture head temperature measuring device is mounted on the capture head 20 and electrically connected to the controller, which is adapted to control the heating temperature of the capture head heating device based on the detection value of the capture head temperature measuring device. The inner conduit temperature measuring device is mounted on the inner conduit 30 and electrically connected to the controller, which is adapted to control the heating temperature of the inner conduit heating device based on the detection value of the inner conduit temperature measuring device. The outer conduit temperature measuring device is mounted on the outer conduit 40 and electrically connected to the controller, which is adapted to control the heating temperature of the outer conduit heating device based on the detection value of the outer conduit temperature measuring device. This allows for control of the heating temperature of the corresponding heating devices based on the detected temperatures of the capture head 20, inner conduit 30, and outer conduit 40, achieving independent closed-loop control of the heating devices, improving the controllability of the temperatures of the capture head 20, inner conduit 30, and outer conduit 40, facilitating a dynamic balance between heating and heat loss during liquid flow, and preventing freezing and blockage.

[0046] Advantageously, such as Figure 1As shown, the programmable temperature-controlled liquid flow feed and recovery device 1 for a vacuum environment also includes a waste liquid collection container 50 and a vacuum pumping device 60. The end of the outer conduit 40 away from the inner conduit 30 is connected to the waste liquid collection container 50. The vacuum pumping device 60 is connected to the waste liquid collection container 50 and is adapted to create a low vacuum environment within the waste liquid collection container 50. For example, the vacuum pumping device 60 is adapted to create a gas pressure of 10 mbar within the waste liquid collection container 50. The vacuum pumping device 60 can maintain a low vacuum within the waste liquid collection container 50, establish a pressure gradient, and use the pressure difference to force the liquid to flow downstream, preventing gas resistance. Compared to liquid flow feed devices in related technologies, it can suppress waste liquid vapor backflow, prevent affecting the high vacuum level of the vacuum chamber 10, and extend the service life of the electron gun and detector.

[0047] Furthermore, the programmable temperature-controlled liquid flow feed and recovery device 1 for a vacuum environment also includes a cold trap, in which a waste liquid collection container 50 is disposed. For example, the cold trap can be an ethanol / dry ice bath or an ice-water mixture, with a temperature ranging from -50°C to 0°C. The cold trap can significantly reduce the saturated vapor pressure of the waste liquid in the waste liquid collection container 50, cutting off the back diffusion of vapor to the vacuum chamber 10 at its source. Compared with liquid flow feed devices in related technologies, it can suppress the backflow of waste liquid vapor, prevent it from affecting the high vacuum level of the vacuum chamber 10, and extend the service life of the electron gun and detector.

[0048] More advantageously, such as Figure 1 As shown, the programmable temperature-controlled liquid flow feed and recovery device 1 for a vacuum environment also includes a pressure sensor 70, which is connected between the waste liquid collection container 50 and the vacuum pumping device 60. Specifically, the pressure sensor 70 can be a resistance gauge with a display. This facilitates the detection of the pressure inside the waste liquid collection container 50 and the detection of whether a low vacuum has been formed inside the vacuum pumping device 60.

[0049] Figures 2-5 A programmed temperature-controlled liquid flow feed and recovery device 1 for a vacuum environment is shown according to some examples of the present invention. For example... Figures 2-5 As shown, the lower end of the capture head 20 is provided with a conduit hole 22 (the vertical direction is indicated by the arrow in the figure). The upper end of the inner conduit 30 fits into the conduit hole 22. The upper end of the capture head 20 is provided with a capture hole 21, which is suitable for capturing the liquid jet 3. The upper end face of the capture head 20 is constructed as a conical surface with a diameter that gradually increases from top to bottom. Specifically, the cone angle α of the conical surface is 90 degrees. This facilitates heat transfer to the capture hole 21 and effectively prevents instantaneous freezing when the liquid jet 3 impacts the capture hole 21 of the capture head 20.

[0050] Specifically, such as Figure 3 and Figure 4As shown, the capture head 20 also includes a transition section 23, which is connected to both the capture hole 21 and the guide hole 22. The diameter of the guide hole 22 is larger than the diameter of the capture hole 21, and the diameter of the transition section 23 gradually increases from the capture hole 21 to the guide hole 22. Specifically, the maximum diameter of the transition section 23 is smaller than the diameter of the guide hole 22. This prevents the liquid jet 3 from splashing backwards after entering the capture hole 21.

[0051] More specifically, such as Figure 2 , Figure 3 and Figure 5 As shown, a connecting portion 24 is formed on the circumferential surface of the capture head 20, and a mounting hole 25 is provided on the connecting portion 24. The capture head heating device is an electric heating rod and fits into the mounting hole 25. This facilitates the installation of the capture head heating device, increases the contact area between the capture head heating device and the capture head 20, and facilitates heating of the capture head 20.

[0052] Optionally, the capture head 20 is made of a heat-conducting material. For example, the capture head 20 can be a beryllium copper alloy. This facilitates the transfer of heat from the capture head heating device to the capture head 20, making it easier to heat the capture head 20.

[0053] Furthermore, the inner conduit heating device is a flexible electric heating strip wrapped around the inner conduit 30, and the outer conduit heating device is a flexible electric heating strip wrapped around the outer conduit 40. This facilitates heating of both the inner conduit 30 and the outer conduit 40, and also allows for coverage of the entire flow path of both conduits 30 and 40, improving heating efficiency and uniformity.

[0054] Specifically, the programmable temperature-controlled liquid flow feed and recovery device 1 for vacuum environments can be used for liquid sample capture and recovery in experimental devices such as liquid-phase ultrafast electron diffraction (UED), liquid-cell transmission electron microscopy (Liquid-cell TEM), and various vacuum liquid phase spectroscopy.

[0055] The following describes a method for programmable temperature-controlled liquid flow feed and recovery in a vacuum environment according to an embodiment of the present invention. The method for programmable temperature-controlled liquid flow feed and recovery in a vacuum environment according to an embodiment of the present invention includes a programmable temperature-controlled liquid flow feed and recovery device 1 for a vacuum environment according to the above-described embodiment of the present invention, comprising the following steps: Before the liquid jet device 2 generates the liquid jet 3, the controller controls the capture head heating device, the inner conduit heating device and the outer conduit heating device to heat the capture head 20, the inner conduit 30 and the outer conduit 40 to a predetermined preheating temperature, which is greater than the melting point of the solvent in the liquid jet 3. During the experiment, the controller controls the capture head heating device, the inner conduit heating device and the outer conduit heating device to maintain the capture head 20, the inner conduit 30 and the outer conduit 40 at a predetermined experimental temperature, which is greater than the melting point of the solvent in the liquid jet 3; After the experiment, the controller controls the capture head heating device, the inner conduit heating device and the outer conduit heating device to heat the capture head 20, the inner conduit 30 and the outer conduit 40 to a predetermined vaporization temperature, which is greater than the boiling point of the solvent in the liquid jet 3.

[0056] The programmed temperature-controlled liquid flow feed and recovery method for vacuum environments according to embodiments of the present invention, by utilizing the programmed temperature-controlled liquid flow feed and recovery device 1 for vacuum environments according to the above embodiments of the present invention, has advantages such as being less prone to freezing and clogging, and having strong applicability.

[0057] Other configurations and operations of the programmed temperature-controlled liquid flow feed and recovery device 1 and method for a vacuum environment according to embodiments of the present invention are known to those skilled in the art and will not be described in detail here.

[0058] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0059] Although embodiments of the invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A programmable temperature-controlled liquid flow feed and recovery device for use in a vacuum environment, characterized in that, include: A vacuum chamber, wherein the vacuum chamber is adapted to form a vacuum environment, and the vacuum chamber is adapted to house a liquid jet device, the liquid jet device being adapted to generate a liquid jet; A capture head, wherein the capture head is disposed within the vacuum cavity and is adapted to capture the liquid jet; A capture head heating device is disposed on the capture head; An inner conduit, wherein the inner conduit is disposed within the vacuum cavity and connected to the capture head; An inner conduit heating device is disposed on the inner conduit. An external conduit, which is located outside the vacuum chamber and connected to the internal conduit; An external conduit heating device is disposed on the external conduit. The controller is electrically connected to the capture head heating device, the inner conduit heating device, and the outer conduit heating device respectively to independently control the heating temperature of the capture head heating device, the inner conduit heating device, and the outer conduit heating device.

2. The programmable temperature-controlled liquid flow feeder and recovery device for a vacuum environment according to claim 1, characterized in that, Also includes: A temperature measuring device for a capture head, wherein the temperature measuring device for a capture head is disposed on the capture head and electrically connected to the controller, and the controller is adapted to control the heating temperature of the capture head heating device according to the detection value of the temperature measuring device for a capture head; An internal conduit temperature measuring device is disposed on the internal conduit and electrically connected to the controller, the controller being adapted to control the heating temperature of the internal conduit heating device according to the detection value of the internal conduit temperature measuring device; An external conduit temperature measuring device is provided on the external conduit and electrically connected to the controller, the controller being adapted to control the heating temperature of the external conduit heating device according to the detection value of the external conduit temperature measuring device.

3. The programmable temperature-controlled liquid flow feed and recovery device for a vacuum environment according to claim 1, characterized in that, Also includes: A waste liquid collection container, wherein the end of the outer conduit away from the inner conduit is connected to the waste liquid collection container; A vacuum pumping device is connected to the waste liquid collection container and is adapted to create a low vacuum environment inside the waste liquid collection container.

4. The programmable temperature-controlled liquid flow feed and recovery device for a vacuum environment according to claim 3, characterized in that, It also includes a cold trap, in which the waste liquid collection container is disposed.

5. The programmable temperature-controlled liquid flow feeder and recovery device for a vacuum environment according to claim 3, characterized in that, It also includes a pressure sensor connected between the waste collection container and the vacuum device.

6. The programmable temperature-controlled liquid flow feed and recovery device for a vacuum environment according to claim 1, characterized in that, The lower end of the capture head is provided with a conduit hole, the upper end of the inner conduit is fitted into the conduit hole, the upper end of the capture head is provided with a capture hole, the capture hole is suitable for capturing the liquid jet, and the upper end face of the capture head is constructed as a conical surface with a diameter that gradually increases from top to bottom.

7. The programmable temperature-controlled liquid flow feeder and recovery device for a vacuum environment according to claim 1, characterized in that, The capture head has a connecting portion formed on its circumferential surface, and the connecting portion has a mounting hole. The capture head heating device is an electric heating rod that fits into the mounting hole.

8. The programmable temperature-controlled liquid flow feeder and recovery device for a vacuum environment according to claim 1, characterized in that, The capture head is made of a thermally conductive material.

9. The programmable temperature-controlled liquid flow feed and recovery device for a vacuum environment according to claim 1, characterized in that, The inner conduit heating device is a flexible electric heating strip wrapped around the outside of the inner conduit, and the outer conduit heating device is a flexible electric heating strip wrapped around the outside of the outer conduit.

10. A method for programmable temperature-controlled liquid flow feed-out and recovery in a vacuum environment, characterized in that, The programmable temperature-controlled liquid flow feed and recovery device for a vacuum environment according to any one of claims 1-9 includes the following steps: Before the liquid jet device generates a liquid jet, the controller controls the capture head heating device, the inner conduit heating device, and the outer conduit heating device to heat the capture head, the inner conduit, and the outer conduit to a predetermined preheating temperature, which is greater than the melting point of the solvent in the liquid jet. During the experiment, the controller controls the capture head heating device, the inner conduit heating device, and the outer conduit heating device to maintain the capture head, the inner conduit, and the outer conduit at a predetermined experimental temperature, which is greater than the melting point of the solvent in the liquid jet. After the experiment, the controller controls the capture head heating device, the inner conduit heating device, and the outer conduit heating device to heat the capture head, the inner conduit, and the outer conduit to a predetermined vaporization temperature, which is greater than the boiling point of the solvent in the liquid jet.

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