Carbon-nitrogen integrated machine and its atmosphere adjusting method

Abstract

The present application relates to the technical field of air conditioning equipment, and discloses a carbon-nitrogen integrated machine, which comprises an air conditioning box, a gasification cavity and a regulating cavity formed by separation, a total liquid inlet pipe, a gasification pipe group and a bus pipe group are arranged in the gasification cavity; a controller and a control assembly are arranged in the regulating cavity, a switching device for switching liquid nitrogen or liquid carbon is arranged on the total liquid inlet pipe, the gasification pipe group comprises a plurality of parallel gasification pipe areas and a regulating gasification pipe area, each gasification pipe area is provided with a gasification branch pipe with a heat dissipation fin plate and a side branch pipe, and the liquid inlet path is switched through an electromagnetic reversing valve, the control assembly comprises a high-pressure temperature control chamber, a plate heat exchanger and a multi-stage control valve, and accurate temperature control, pressure control and quantity control of the gas are realized; the present application also relates to an air conditioning method of the carbon-nitrogen integrated machine, which comprises the steps of installation, liquid input, gasification, defrosting and carbon-nitrogen switching, and realizes the alternate and efficient supply of nitrogen and carbon dioxide. The present application is convenient to switch and accurate in gas control, and is suitable for various air conditioning occasions such as grain storage.

Description

Technical Field

[0001] This invention relates to the field of integrated carbon-nitrogen modified atmosphere packaging, and particularly to an integrated carbon-nitrogen machine and its modified atmosphere packaging method. Background Technology

[0002] In the storage and preservation of agricultural products such as grains, fruits, and vegetables, controlled atmosphere storage technology is one of the key methods. By adjusting the gas composition of the storage environment, such as reducing oxygen concentration and increasing nitrogen or carbon dioxide concentration, the respiration of the product and the growth of microorganisms are inhibited, thereby extending the shelf life. Nitrogen and carbon dioxide are two of the most commonly used controlled atmosphere media.

[0003] Currently, most controlled atmosphere devices used to generate and supply the aforementioned gases are independently designed. For the vaporization and supply of liquid nitrogen or liquid carbon dioxide, two separate dedicated systems are typically required: one for the storage, vaporization, and transportation of liquid nitrogen, and the other for the storage, vaporization, and transportation of liquid carbon dioxide. This discrete system suffers from problems such as large equipment footprint, high initial investment costs, and cumbersome operation and management.

[0004] Existing vaporization devices generally suffer from problems with vaporization efficiency and heat exchange uniformity in the process of vaporizing cryogenic liquid media into room-temperature gas. Traditional coil or tube-type vaporizers may experience uneven local heat exchange due to structural limitations, affecting vaporization stability. At the same time, when the cryogenic liquid media flows inside the vaporization tube, frost easily forms on the outer wall of the tube. The frost layer severely hinders heat exchange, leading to a gradual decrease in vaporization efficiency, increased energy consumption, and even affecting the continuous and stable gas supply, which is very inconvenient. Summary of the Invention

[0005] The purpose of this invention is to provide a carbon-nitrogen integrated gasifier with an ingenious structure. By setting multiple side branches on the fins of the gasification branch pipe, liquid nitrogen and liquid carbon are gasified separately. The gasification pipelines of liquid carbon and liquid nitrogen are integrated into a single design, which can ensure that liquid nitrogen and liquid carbon are gasified separately without interfering with each other, thus ensuring overall gasification efficiency, high efficiency and convenience.

[0006] The technical solution to achieve the objective of this invention is as follows: This invention has a sealed controlled atmosphere chamber, which has an inner cavity divided into a vaporization chamber and a regulating chamber by a partition plate. The vaporization chamber contains a main inlet pipe, a vaporization tube assembly connected to the main inlet pipe, and a manifold assembly that transfers the vaporized gas from the vaporization tube assembly to the regulating chamber. The regulating chamber contains a controller and a control component that controls the temperature, pressure, and quantity of the gas introduced from the manifold assembly before discharging it. The two ends of the manifold assembly are connected to the vaporization tube assembly and the control component, respectively. The bottom of the controlled atmosphere chamber has an inlet end, and the top of the controlled atmosphere chamber has an outlet end. The controlled atmosphere box has an exhaust fan at its outlet and an air inlet at its inlet. Driven by a controller, the exhaust fan, in conjunction with each air inlet, forms an orderly heat exchange airflow within the vaporization chamber, capable of exchanging heat with the vaporization tube assembly. The main liquid inlet pipe is equipped with a switching device for switching between liquid nitrogen and liquid carbon for liquid inlet. The vaporization tube assembly includes multiple parallel vaporization tube zones and a regulating vaporization tube zone. Each vaporization tube zone and the regulating vaporization tube zone are connected to the main liquid inlet pipe via corresponding branch liquid inlet pipes. The manifold assembly includes a main manifold pipe and multiple branch pipes connected to the vaporization tube zones. The system includes a manifold and a regulating manifold. Each vaporization zone is connected to the main manifold via its respective branch manifolds. The regulating vaporization zone is connected to the control unit via the regulating manifold. Each vaporization zone and the regulating vaporization zone includes multiple arrayed vaporization branch pipes, a lower connecting pipe connected to each branch liquid inlet pipe, an upper connecting pipe connected to each branch manifold, an upper ring pipe corresponding to and coaxially arranged with each vaporization branch pipe, a lower ring pipe corresponding to and coaxially arranged with each vaporization branch pipe, and solenoid directional valves installed on the upper and lower connecting pipes. Each solenoid directional valve is electrically connected to the controller. Each vaporization branch pipe is equipped with multiple... The heat dissipation fins are distributed circumferentially along the axis of the vaporization branch pipe. Each heat dissipation fin extends from one end of the vaporization branch pipe to the other end. Each heat dissipation fin is provided with a side branch pipe integrally formed with the heat dissipation fin. The sum of the volumes of the side branch pipes is the same as the volume of the vaporization branch pipe. The upper end of each side branch pipe is connected to the upper ring pipe and the lower ring pipe. The upper ends of the upper ring pipe and the vaporization branch pipe are connected to the upper connecting pipe, and the lower ends of the lower ring pipe and the vaporization branch pipe are connected to the lower connecting pipe. Each electromagnetic reversing valve switches the liquid inlet path on each vaporization branch pipe through the drive of the controller.

[0007] Furthermore, the aforementioned switching device includes a switching seat fixed on the controlled atmosphere box and a switching ring sleeve rotatably mounted on the switching seat. The switching seat has a switching ring groove coaxially arranged with the switching seat. The switching ring sleeve is coaxially arranged with the switching seat and rotatably connected within the switching ring groove. Connecting protrusions are provided on both sides of the switching ring sleeve, and connecting ring grooves adapted to the connecting protrusions are provided on both sides of the switching ring groove. Multiple plastic sealing protrusions are evenly distributed along the axis of the connecting protrusions on both the outer and inner walls of the connecting protrusions, and each sealing protrusion is fitted with a connecting protrusion... The rings are coaxially arranged, and the inner wall of the connecting ring groove is provided with a sealing ring groove that is adapted to each sealing convex ring. The switching ring sleeve is provided with a liquid passage that is parallel to the axis of the switching ring sleeve and can pass through different liquid gases. The switching seat is provided with two liquid inlet channels that are parallel to the axis of the switching seat and one liquid outlet channel that is connected to the main liquid inlet pipe. Each liquid inlet channel is divided into two sections by the cutting of the switching ring groove. The switching ring sleeve connects the two sections of the liquid passage with the two sections of any liquid inlet channel by rotation, while closing the two sections of the other liquid inlet channel.

[0008] Furthermore, the aforementioned switching base is provided with two mounting ports communicating with each liquid inlet channel. Each mounting port is equipped with a connecting tube that can be connected to an external liquid inlet pipe. A stop ring coaxially arranged with the liquid inlet channel is provided between each mounting port and the liquid inlet channel. The liquid inlet channel is provided with a sealing assembly that automatically seals the liquid inlet channel when the connecting tube is not inserted. The sealing assembly includes multiple limiting side grooves circumferentially distributed along the axis of the liquid inlet channel on the inner wall of the liquid inlet channel, a sealing block disposed within the stop ring, and a... The sealing block has a limiting side slider that is adapted to each limiting side slide groove on its side wall, and a return spring set in each limiting side slide groove. The two ends of the return spring are fixedly connected to the side walls of the limiting side slider and the limiting side slide groove, respectively. The sealing block extends into the stop protrusion ring through the sliding cooperation of each limiting side slider and the limiting side slide groove, and the continuous force of each return spring, and closes the liquid inlet channel. When the connecting tube is inserted into the installation port, the sealing block is pushed open, and after the connecting tube is fixedly installed in the installation port, it is connected to the liquid inlet channel.

[0009] Furthermore, the aforementioned connecting tube includes a connecting part and an mounting part coaxially arranged with the connecting part. The mounting port is provided with an internal thread, and the mounting part is provided with an external thread that can be adapted to the internal thread. The insertion part is provided with a plurality of connecting holes distributed circumferentially along the axis of the insertion part. The side of the stop ring is provided with a sealing gasket. The mounting part is inserted into the mounting port through the threaded engagement of the external thread and the internal thread and is pressed against the sealing gasket. The insertion part pushes open the sealing block while passing through the stop ring through the engagement of the mounting part and the mounting port. The connecting tube is connected to the liquid inlet channel after each connecting hole on the insertion part extends into the liquid inlet channel.

[0010] Furthermore, the outer wall of the aforementioned switching ring sleeve is provided with a plurality of paddles circumferentially distributed along the axis of the switching ring sleeve, and the bottom of the switching ring groove is provided with a plurality of positioning slip rings evenly distributed along the axis of the switching ring groove. Each connecting slip ring is coaxially arranged with the switching ring groove, and the inner wall of the switching ring sleeve is provided with positioning ring grooves adapted to each connecting slip ring. The switching ring groove is rotatably connected to the switching ring groove through the cooperation of each positioning slip ring and the positioning ring groove.

[0011] Furthermore, the sidewall of the aforementioned switching ring groove is provided with a plurality of positioning magnetic blocks circumferentially distributed along the axis of the switching ring groove on the inner wall of the switching ring groove, and the sidewall of the switching ring sleeve is provided with a plurality of side magnetic blocks adapted to each positioning magnetic block. The switching ring sleeve is positioned after rotation by the cooperation of the side magnetic blocks and the positioning magnetic blocks in the initial state or after rotation.

[0012] Furthermore, multiple defrosting assemblies are provided between each upper ring pipe and its corresponding lower ring pipe to defrost the outer wall of the vaporization branch pipe. Each defrosting assembly includes two opposing positioning rods, a defrosting block slidably connected to each positioning rod, a defrosting cylinder fixed to the bottom of the upper ring pipe, and a telescopic rod that extends and retracts in multiple stages under the drive of the defrosting cylinder. The telescopic end of the telescopic rod is fixed to the defrosting block, and the defrosting block has positioning holes through which each positioning rod can pass. The defrosting block is raised and lowered by the drive cylinder driving the telescopic rod and the cooperation between each positioning rod and the positioning hole. Between the upper and lower ring pipes, an arc-shaped preheating plate is fixedly installed inside the defrosting block. An external power supply is provided on the controlled atmosphere box, and the external power supply is electrically connected to the controller. The preheating plate is preheated by heating wires embedded in the preheating plate and electrically connected to the external power supply. The defrosting cylinder is electrically connected to the controller. The preheating plate is also provided with plastic scrapers that can remove frost from the outer wall of the vaporization branch pipe. Each plastic scraper is preheated by the preheating plate and defrosts the outer wall of the vaporization branch pipe by driving the telescopic rod through the defrosting cylinder and driving the defrosting block through the telescopic rod.

[0013] Furthermore, the defrosting block is provided with a side scraper coaxially arranged with the side branch pipe. Each side scraper removes the frost on the side branch pipe as the defrosting block moves.

[0014] Furthermore, the aforementioned control components include a high-pressure temperature control chamber, a plate heat exchanger, a first manifold, a second manifold, a connecting pipe, an exhaust pipe, and multiple outlet pipes. The two ends of the plate heat exchanger are connected to the main manifold and the high-pressure temperature control chamber respectively via pipes. The regulating manifold is also connected to the high-pressure temperature control chamber. The first manifold is connected to the high-pressure temperature control chamber via a pipe. The two ends of the connecting pipe are connected to the first manifold and the second manifold respectively. One end of the exhaust pipe is connected to the second manifold. One end of each outlet pipe is connected to the exhaust pipe, and the other end of each outlet pipe extends out of the regulating chamber. The manifold is equipped with a first electromagnetic control valve that controls the opening and closing of the manifold. The first manifold is equipped with a pressure transmitter. The high-pressure temperature control chamber is equipped with a temperature measuring rod. The connecting pipe is equipped with a shut-off valve, a filter, and a pressure regulating valve that controls the opening and closing of the connecting pipe. The exhaust pipe is equipped with a flow meter, a temperature transmitter, and a second electromagnetic control valve. Each exhaust pipe is equipped with a low-temperature shut-off valve. The first electromagnetic control valve, temperature measuring rod, pressure transmitter, shut-off valve, filter, pressure regulating valve, flow meter, temperature transmitter, second electromagnetic control valve, and low-temperature shut-off valve are all electrically connected to the controller.

[0015] The purpose of this invention is to provide a carbon-nitrogen integrated controlled atmosphere method with an ingenious structure that enables rapid and efficient switching between liquid nitrogen and liquid carbon, making it convenient and practical.

[0016] The technical solution to achieve the objective of this invention is as follows: This invention includes the following operational steps: S1. Parameter setting: Set the standard nitrogen temperature and the standard carbon dioxide temperature on the controller; S2. Install the inlet pipe: Fix each inlet pipe to each connecting tube, and then install each connecting tube to the switching seat. During the installation process, the connecting tube is fixedly connected by the thread engagement of the external thread hole and the internal thread of the installation port, and is sealed by pressing against the sealing gasket. As the connecting tube gradually extends into the inlet channel, it gradually pushes open the sealing block, and the connecting holes on the connecting tube on the insertion part extend into the inlet channel and communicate with the inlet channel. S3, Introduce liquid nitrogen: Introduce liquid nitrogen into each inlet pipe respectively, and then introduce liquid nitrogen into the main inlet pipe; S4, Liquid gas vaporization: The controller sends a drive signal to the exhaust fan and at the same time sends a drive signal to each solenoid switching valve to open each vaporization branch pipe and close each side branch pipe. Liquid nitrogen enters each vaporization branch pipe through the main liquid inlet pipe and each branch liquid inlet pipe. The exhaust fan forms an orderly heat exchange airflow in the controlled atmosphere chamber by cooperating with each air inlet. After the liquid nitrogen in each vaporization branch pipe in the vaporization pipe area is vaporized, it enters the main flow pipe from each branch manifold and flows into the plate heat exchanger. S5. Nitrogen gas discharge after vaporization: The nitrogen gas in the main pipe enters the plate heat exchanger for heat exchange treatment. After entering the high-pressure temperature control chamber for temperature adjustment, the gas is discharged to the connecting pipe. After the flow rate and pressure are controlled by the connecting pipe, it enters the second manifold and is discharged to the exhaust pipe after the flow rate and pressure are controlled again. It is then discharged from each outlet pipe to each grain storage silo or grain storage pipe. The amount of nitrogen gas introduced is fed back to the controller through the flow meter. S5.1 Temperature difference regulation: When there is a difference between the temperature of nitrogen in the high-pressure temperature control chamber and the set nitrogen temperature, nitrogen after heat exchange is introduced into the regulating manifold to adjust the temperature. When the temperature measuring rod detects that the temperature of nitrogen in the high-pressure temperature control chamber reaches the standard gas temperature, the high-pressure control chamber pressurizes the gas and discharges it to the connecting pipe. After the flow rate and pressure are controlled by the connecting pipe, the gas enters the second manifold and is discharged to the exhaust pipe after the flow rate and pressure are controlled again. The gas is then discharged from each outlet pipe to each grain silo or grain storage pipe, and the amount of nitrogen introduced is fed back to the controller through the flow meter. S6. Defrosting: After the nitrogen in the vaporization pipe area and the regulating vaporization pipe area is completely discharged, the controller sends a drive signal to the external power supply. The preheating plate is heated by the heating wire. At the same time, a drive signal is sent to the defrosting cylinder. The defrosting cylinder drives the telescopic rod to extend. The defrosting block begins to slide through the cooperation of various positioning rods and positioning holes. During the sliding process, the plastic scraper defrosts the frost on the outer wall of the vaporization branch pipe. After the treatment is completed, the controller sends a stop drive signal to the defrosting cylinder. The defrosting cylinder drives the telescopic rod and the defrosting block to reset. At the same time, the controller sends a stop heating signal to the external power supply, and the external power supply stops supplying power. S7. Carbon-nitrogen switching: Rotate the switching ring sleeve. The switching ring sleeve rotates through the cooperation of each positioning slip ring and positioning ring groove, and at the same time overcomes the cooperation of the side magnetic block and positioning magnetic block. After the switching ring sleeve rotates, the liquid passage is rotated to connect with the liquid inlet channel and liquid outlet channel on the other side. Then, liquid carbon is introduced. The liquid carbon enters each vaporization branch pipe through the main liquid inlet pipe and each branch liquid inlet pipe. The exhaust fan forms an orderly heat exchange airflow in the controlled atmosphere chamber through the cooperation of each air inlet. After the liquid carbon in each vaporization branch pipe in the vaporization pipe area is vaporized, it enters the main flow pipe from each branch manifold and is introduced into the plate heat exchanger. S8. Gasification and carbon dioxide discharge: The carbon dioxide in the main pipe enters the plate heat exchanger for heat exchange treatment. After entering the high-pressure temperature control chamber for temperature adjustment, the gas is discharged to the connecting pipe. After the flow rate and pressure are controlled by the connecting pipe, it enters the second manifold and is discharged to the exhaust pipe after the flow rate and pressure are controlled again. It is then discharged from each outlet pipe to each grain silo or grain storage pipe. The amount of carbon dioxide introduced is fed back to the controller through the flow meter. S8.1 Temperature difference regulation: When there is a difference between the temperature of carbon dioxide in the high-pressure temperature control chamber and the set carbon dioxide temperature, the heat-exchanged carbon dioxide is introduced into the regulating manifold to adjust the temperature. When the temperature measuring rod detects that the temperature of carbon dioxide in the high-pressure temperature control chamber reaches the standard gas temperature, the high-pressure control chamber pressurizes the gas and discharges it to the connecting pipe. After the flow rate and pressure are controlled by the connecting pipe, the gas enters the second manifold and is discharged to the exhaust pipe after the flow rate and pressure are controlled again. The gas is then discharged from each outlet pipe to each grain silo or grain storage pipe, and the amount of carbon dioxide introduced is fed back to the controller through the flow meter. S9. Secondary Defrosting Process: After the carbon dioxide in the vaporization pipe area and the regulating vaporization pipe area is completely discharged, the controller sends a drive signal to the external power supply. The preheating plate is heated by the heating wire. At the same time, a drive signal is sent to the defrosting cylinder. The defrosting cylinder drives the telescopic rod to extend. The defrosting block begins to slide through the cooperation of various positioning rods and positioning holes. During the sliding process, each side scraper defrosts the frost on the outer wall of the side branch pipe. After the process is completed, the controller sends a stop drive signal to the defrosting cylinder. The defrosting cylinder drives the telescopic rod and the defrosting block to reset. At the same time, the controller sends a stop heating signal to the external power supply, and the external power supply stops supplying power. S10, Circulation: Following the operating steps of S2 to S9, liquid nitrogen and liquid carbon are circulated repeatedly.

[0017] The present invention has the following positive effects: (1) The present invention uses a switching device on the controlled atmosphere box to switch the liquid nitrogen or liquid carbon inlet. Side branches are set on each fin of the vaporization branch pipe, and the sum of the volumes of each side branch pipe is the same as the volume of the vaporization branch pipe, so that the total flow rate from each side branch pipe can be the same as the flow rate of the vaporization branch pipe. At the same time, the vaporization pipe group is set into multiple parallel vaporization pipe areas, and each vaporization branch pipe is equipped with a heat dissipation fin extending along the axis and parallel side branches, which increases the contact area and heat exchange path with the heat exchange airflow. Different vaporization paths are switched by electromagnetic reversing valve. By setting a switching device and a vaporization pipe group and manifold group compatible with liquid nitrogen and liquid carbon, the supply functions of nitrogen and carbon dioxide are integrated into a single device, realizing the rapid switching and integrated supply of carbon and nitrogen as two controlled atmosphere media, effectively solving the problems in the prior art. The aforementioned problems of large footprint, high cost, and cumbersome operation caused by requiring two independent sets of equipment are greatly improved by this device, which greatly enhances the versatility and process flexibility of the equipment. In the existing technology, the vaporization of liquid nitrogen or liquid carbon in the vaporization branch pipe requires heat absorption. Therefore, frost will form on the outer wall of the vaporization branch pipe during the vaporization process, forming two different liquid flow paths between the vaporization branch pipe and each side branch pipe. When switching to another liquid gas for vaporization, it passes through each side branch pipe, ensuring the same flow rate without affecting the overall vaporization efficiency due to frost. By cooperating with the controller through the electromagnetic reversing valve, the liquid inlet flow can be switched to flow through the vaporization branch pipe or the parallel side branch pipe system. This not only provides an adjustment means to adapt to different flow rate requirements, but also reserves a control channel for subsequent defrosting or de-icing operations, enhancing the controllability and adaptability of the system. The structure is ingenious, efficient, and convenient.

[0018] (2) The present invention sets connecting ring grooves on both sides of the switching ring groove, sets multiple sealing convex rings on the connecting convex ring, and the switching ring sleeve is rotated and connected by the cooperation of the connecting ring groove and the connecting convex ring, and is sealed by the cooperation of the sealing convex ring and the sealing ring groove. By rotating the switching ring sleeve, the single liquid passage on it is aligned with different liquid inlet channels, realizing the mechanical switching and physical isolation of the two liquid gas source input channels. The operation is simple, the switching action is reliable, and the cooperation of the sealing convex ring and the sealing ring groove ensures good sealing performance in the switching state, preventing medium leakage or cross-contamination.

[0019] (3) The present invention provides a connecting tube at the installation port and a sealing component on the stop ring. The sealing block extends into the stop ring through the sliding cooperation of each limiting side slider and the limiting side groove, and the continuous force of each return spring, and closes the liquid inlet channel. When the connecting tube is inserted into the installation port, it pushes open the sealing block and connects to the liquid inlet channel after the connecting tube is fixedly installed with the installation port. When the external liquid inlet pipe is not connected, the sealing component automatically closes the liquid inlet channel under the action of the return spring, preventing the inside of the controlled atmosphere box from accidentally connecting with the outside, ensuring the system's sealing and safety. The process of inserting the connecting tube automatically pushes open the sealing block and establishes a flow path, realizing plug-and-play and self-closing upon removal, simplifying the operation and improving the convenience and safety of use.

[0020] (4) This invention achieves fast and reliable installation and fixing by setting the connecting tube as a matching connecting part and a mounting part, and by using a threaded connection. The sealing gasket ensures the sealing performance of the connection. The design of opening the connecting hole in the plug part allows the flow channel to open quickly and fully after the sealing block is pushed off, reducing flow resistance and ensuring the smooth transport of liquid media.

[0021] (5) By setting a lever on the switching ring sleeve, the present invention facilitates the operator to rotate the switching ring sleeve and switch the liquid inlet. The sliding cooperation between the positioning slip ring and the positioning ring groove provides stable radial support and smooth rotation guidance for the switching ring sleeve, while also ensuring the axial positioning of the switching ring sleeve, thus ensuring the smoothness and accuracy of the switching action.

[0022] (6) By setting a positioning magnetic block on the side wall of the switching ring sleeve and a side magnetic block on the side wall of the switching ring groove, the present invention provides a clear positioning sense and holding force for the switching ring sleeve in the initial position or after switching to the correct position by using the magnetic attraction between the positioning magnetic block and the side magnetic block, effectively preventing accidental displacement caused by vibration and other reasons, ensuring the stability and accuracy of the switching state, and improving the operating experience and reliability.

[0023] (7) The present invention sets up a defrosting assembly between the upper and lower ring pipes. Each plastic scraper is preheated by the preheating plate and the outer wall of the gasification branch pipe is defrosted by the defrosting cylinder driving the telescopic rod and the telescopic rod driving the defrosting block. The controller drives the defrosting cylinder to move the preheating plate and plastic scraper up and down along the gasification branch pipe. The preheated scraper can effectively scrape off and melt the frost layer, realizing automated defrosting, significantly restoring and maintaining the high-efficiency heat exchange capacity of the gasification pipe, ensuring the continuous stability of the gasification process, reducing energy consumption, and at the same time, defrosting also greatly improves the efficiency of switching the liquid inlet pipe and the gasification efficiency of liquid gas. Defrosting avoids the low temperature after frost formation from affecting the later gasification efficiency, which is efficient and convenient.

[0024] (8) By setting a side scraper on the defrosting block, the side scraper moves with the defrosting block and can simultaneously remove the frost on the outer wall of the side branch pipe, ensuring the cleanliness of the entire vaporization tube group, including the vaporization branch pipe and the heat exchange surface of each side branch pipe, and achieving a more comprehensive and efficient defrosting effect.

[0025] (9) By setting control components in the regulating chamber, the present invention constructs a multi-level, high-precision gas parameter control system. Through plate heat exchangers, high-pressure temperature control chambers, and pipeline systems that integrate multi-level control elements such as pressure regulating valves, filters, flow meters, and temperature transmitters, combined with the centralized control of the controller, the temperature, pressure, and flow rate of the output gas can be independently and accurately regulated and monitored. The structure is ingenious, efficient, and convenient.

[0026] (10) By setting up a gas control method based on a carbon-nitrogen integrated machine, this invention clarifies the specific steps of carbon-nitrogen switching, vaporization, defrosting, temperature and pressure adjustment, and defrosting, ensuring that the equipment functions can be fully utilized, realizing the full-process automated and intelligent management from liquid medium to the supply of gas that meets the requirements, improving the efficiency and reliability of the entire gas control operation, and making it highly efficient and convenient. Attached Figure Description

[0027] To make the content of this invention easier to understand, the invention will be further described in detail below with reference to specific embodiments and accompanying drawings, wherein... Figure 1 This is a schematic diagram of the overall structure of the integrated carbon-nitrogen generator in this invention; Figure 2 This is a schematic diagram of the internal structure of the integrated carbon-nitrogen generator in this invention; Figure 3 This is a schematic diagram of the internal structure of the regulating cavity in this invention; Figure 4 This is a schematic diagram of the connection structure between the gasification branch pipe and the upper and lower ring pipes in this invention. Figure 5 This is a schematic diagram of the overall structure of the gasification branch pipe in this invention; Figure 6 This is a schematic diagram of the overall structure of the defrosting assembly between the upper and lower ring pipes in this invention; Figure 7 This is a top view of the overall structure of the defrosting assembly in this invention; Figure 8 This is a schematic diagram of the connection structure between the defrosting block, the preheating plate, and the plastic scraper in this invention; Figure 9 This is a cross-sectional view of the overall structure of the switching device in this invention; Figure 10 for Figure 9 Enlarged view of point A in the middle; Figure 11This is a cross-sectional view of the overall structure of the switching ring sleeve in this invention; Figure 12 This is a cross-sectional view of the overall structure of the switching base in this invention; Figure 13 for Figure 12 Enlarged view of point B in the middle; The attached figures are labeled as follows: 1. Regulated Atmosphere Box; 11. Vaporization Chamber; 111. Main Inlet Pipe; 112. Main Manifold; 113. Regulating Manifold; 12. Regulating Chamber; 121. Plate Heat Exchanger; 122. High-Pressure Temperature Control Chamber; 123. First Manifold; 124. Second Manifold; 125. Connecting Pipe; 126. Exhaust Pipe; 13. Branch Inlet Pipe; 131. Lower Connecting Pipe; 14. Branch Manifold; 141. Upper Connecting Pipe; 15. Lower Ring Pipe; 16. Upper Ring Pipe; 17. Electromagnetic Reversing Valve; 18. Vaporization Branch Pipe; 181. Fin Plate; 19. Positioning Rod; 2. Switching Device; 2a. Inlet Channel; 2b. Outlet Channel; 2c. Mounting Port; 20. Switching Seat; 21. Switching Ring Groove 211, connecting ring groove 212, sealing ring groove 213, positioning slip ring 214, positioning magnetic block 215, switching ring sleeve 22, toggle block 221, connecting convex ring 222, positioning ring groove 223, sealing convex ring 224, side magnetic block 225, stop convex ring 23, sealing gasket 24, exhaust fan 3, controller 4, defrosting assembly 5, defrosting block 51, positioning hole 511, defrosting cylinder 52, telescopic rod 53, preheating plate 54, plastic scraper 55, side scraper 56, connecting tube 6, connecting hole 61, sealing assembly 7, limit side sliding groove 71, sealing block 72, limit side slider 73, return spring 74. Detailed Implementation

[0028] See Figures 1 to 13This invention relates to a carbon-nitrogen integrated machine, comprising a sealed controlled atmosphere chamber 1. The controlled atmosphere chamber 1 has an inner cavity, which is divided into a vaporization chamber 11 and a regulating chamber 12 by a partition plate. The vaporization chamber 11 contains a main inlet pipe 111, a vaporization tube assembly connected to the main inlet pipe 111, and a manifold assembly that transfers the vaporized gas from the vaporization tube assembly to the regulating chamber 12. The regulating chamber 12 contains a controller 4 and a control component that controls the temperature, pressure, and quantity of the gas introduced from the manifold assembly before discharging it. The two ends of the manifold assembly are connected to the vaporization tube assembly and the control component, respectively. The bottom of the controlled atmosphere chamber 1 has an inlet end, and the top of the controlled atmosphere chamber 1 has an outlet end. The outlet end of the controlled atmosphere chamber 1 is equipped with a suction device. The blower 3 and the air inlet of the controlled atmosphere box 1 are provided with air inlets. Driven by the controller 4, the exhaust blower 3, in cooperation with each air inlet, forms an orderly heat exchange airflow in the vaporization chamber 11, which can exchange heat with the vaporization tube group. The main liquid inlet pipe 111 is provided with a switching device 2 for switching between liquid nitrogen or liquid carbon for liquid inlet. The vaporization tube group includes multiple parallel vaporization tube areas and a regulating vaporization tube area. Each vaporization tube area and the regulating vaporization tube area are connected to the main liquid inlet pipe 111 through their respective branch liquid inlet pipes 13. The manifold includes a main manifold 112, multiple branch manifolds 14 connected to the vaporization tube areas, and a regulating manifold 113. Each vaporization tube area is connected to the main manifold through its respective branch manifold 14. The main manifold 112 is connected, and the regulating vaporization pipe area is connected to the control component through the regulating manifold 113. Each vaporization pipe area and the regulating vaporization pipe area includes multiple arrayed vaporization branch pipes 18, a lower connecting pipe 131 connected to each branch liquid inlet pipe 13, an upper connecting pipe 141 connected to each branch manifold 14, an upper ring pipe 16 corresponding to and coaxially arranged with each vaporization branch pipe 18, a lower ring pipe 15 corresponding to and coaxially arranged with each vaporization branch pipe 18, and electromagnetic reversing valves 17 provided on the upper connecting pipe 141 and the lower connecting pipe 131. Each electromagnetic reversing valve 17 is electrically connected to the controller 4. Each vaporization branch pipe 18 is provided with multiple heat dissipation fins 181 distributed circumferentially along the axis of the vaporization branch pipe 18. Each heat dissipation fin 181 extends from one end of the vaporization branch pipe 18 to the other end along the axis of the vaporization branch pipe 18. Each heat dissipation fin 181 is provided with a side branch pipe 182 integrally formed with the heat dissipation fin 181. The sum of the volumes of each side branch pipe 182 is the same as the volume of the vaporization branch pipe 18. The upper end of each side branch pipe 182 is connected to the upper ring pipe 16 and the lower ring pipe 15. The upper ends of the upper ring pipe 16 and the vaporization branch pipe 18 converge on the upper connecting pipe 141, and the lower ends of the lower ring pipe 15 and the vaporization branch pipe 18 converge on the lower connecting pipe 131. Each electromagnetic reversing valve 17 switches the liquid inlet path on each vaporization branch pipe 18 through the drive of the controller 4.

[0029] The regulating chamber 12 is also equipped with a display that is electrically connected to the controller 4 to display the amount of nitrogen or carbon dioxide discharged. The electromagnetic reversing valve 17 is a cryogenic isolation diaphragm electromagnetic valve, model Bürkert 6011.

[0030] The switching device 2 includes a switching seat 21 fixed on the controlled atmosphere box 1 and a switching ring sleeve 22 rotatably mounted on the switching seat 21. The switching seat 21 has a switching ring groove 211 coaxially arranged with the switching seat 21. The switching ring sleeve 22 is coaxially arranged with the switching seat 21 and rotatably connected in the switching ring groove 211. Both sides of the switching ring sleeve 22 are provided with connecting protrusions 222. Both sides of the switching ring groove 211 are provided with connecting ring grooves 212 adapted to the connecting protrusions 222. The outer and inner walls of the connecting protrusions 222 are provided with multiple plastic sealing protrusions 224 evenly distributed along the axis of the connecting protrusions 222, and each sealing protrusion 224 is connected to the connecting protrusions 222. The convex ring 222 is coaxially arranged, and the inner wall of the connecting ring groove 212 is provided with a sealing ring groove 213 adapted to each sealing convex ring 224. The switching ring sleeve 22 is provided with a liquid passage 2b that is parallel to the axis of the switching ring sleeve 22 and can pass through different liquid gases. The switching seat 21 is provided with two liquid inlet channels 2a that are parallel to the axis of the switching seat 21 and a liquid outlet channel 2c that is connected to the main liquid inlet pipe 111. Each liquid inlet channel 2a is divided into two sections by the cutting of the switching ring groove 211. The switching ring sleeve 22 connects the liquid passage 2b with the two sections of any liquid inlet channel 2a by rotation, while closing the two sections of the other liquid inlet channel 2a.

[0031] The axial and radial positioning of the switching ring 22 is ensured by the cooperation of the connecting convex ring 222 and the connecting ring groove 212, and the overall sealing performance is ensured by the cooperation of the sealing convex ring 224 and the sealing ring groove 213 during the liquid inlet process. The switching base 21 is provided with two mounting ports 20 communicating with each liquid inlet channel 2a. Each mounting port 20 is equipped with a connecting tube 6 that can be connected to an external liquid inlet pipe. A stop ring 23 coaxially arranged with the liquid inlet channel 2a is provided between each mounting port 20 and the liquid inlet channel 2a. The liquid inlet channel 2a is provided with a sealing component 7 that can automatically seal the liquid inlet channel 2a when the connecting tube 6 is not inserted. The sealing component 7 includes multiple limiting side sliding grooves 71 circumferentially distributed along the axis of the liquid inlet channel 2a on the inner wall of the liquid inlet channel 2a, a sealing block 72 disposed in the stop ring 23, and a sealing block 72 disposed in the sealing block 72. The sidewall of 2 has a limiting side slider 73 that is adapted to each limiting side slide groove 71, and a return spring 74 set in each limiting side slide groove 71. The two ends of the return spring 74 are fixedly connected to the sidewall of the limiting side slider 73 and the limiting side slide groove 71 respectively. The sealing block 72 extends into the stop protrusion ring 23 through the sliding cooperation of each limiting side slider 73 and the limiting side slide groove 71, and the continuous force of each return spring 74, and closes the liquid inlet channel 2a. When the connecting tube 6 is inserted into the installation port 20, the sealing block 72 is pushed open, and after the connecting tube 6 is fixedly installed with the installation port 20, it is connected to the liquid inlet channel 2a.

[0032] When the external inlet pipe is not connected, the sealing component 7 automatically closes the inlet channel 2a under the action of the reset spring 74, preventing the inside of the controlled atmosphere box 1 from being accidentally connected to the outside, thus ensuring the system's sealing and safety. During the insertion and installation of the connecting tube 6, the sealing block 72 is automatically pushed open and a flow path is established, realizing plug-and-play functionality and self-closing upon removal, simplifying operation and improving the convenience and safety of use.

[0033] The connecting tube 6 includes a connecting part and an mounting part coaxially arranged with the connecting part. The mounting port 20 is provided with an internal thread, and the mounting part is provided with an external thread that can be adapted to the internal thread. The insertion part is provided with a plurality of connecting holes 61 distributed circumferentially along the axis of the insertion part. The side of the stop ring 23 is provided with a sealing gasket 24. The mounting part is inserted into the mounting port 20 through the threaded engagement of the external thread and the internal thread, and presses against the sealing gasket 24. The insertion part pushes open the sealing block 72 while passing through the stop ring 23 through the engagement of the mounting part and the mounting port 20. The connecting holes 61 on the insertion part of the connecting tube 6 extend into the liquid inlet channel 2a and communicate with the liquid inlet channel 2a.

[0034] The outer wall of the switching ring sleeve 22 is provided with a plurality of toggle blocks 221 distributed circumferentially along the axis of the switching ring sleeve 22. The bottom of the switching ring groove 211 is provided with a plurality of positioning slip rings 214 evenly distributed along the axis of the switching ring groove 211. Each connecting slip ring is coaxially arranged with the switching ring groove 211. The inner wall of the switching ring sleeve 22 is provided with positioning ring grooves 223 adapted to each connecting slip ring. The switching ring groove 211 is rotatably connected to the switching ring groove 211 through the cooperation of each positioning slip ring 214 and the positioning ring groove 223.

[0035] The side wall of the switching ring groove 211 is provided with a plurality of positioning magnetic blocks 215 distributed circumferentially along the axis of the switching ring groove 211 on the inner wall of the switching ring groove 211. The side wall of the switching ring sleeve 22 is provided with a plurality of side magnetic blocks 225 adapted to each positioning magnetic block 215. The switching ring sleeve 22 is positioned after rotation by the cooperation of the side magnetic blocks 225 and the positioning magnetic blocks 215 in the initial state or after rotation.

[0036] By utilizing the magnetic attraction between the positioning magnetic block 215 and the side magnetic block 225, a clear positioning sense and holding force are provided for the switching ring 22 in its initial position or after switching to the correct position, effectively preventing accidental displacement due to vibration or other reasons, and ensuring the stability and accuracy of the switching state.

[0037] Multiple defrosting components 5 are provided between each upper ring pipe 16 and the corresponding lower ring pipe 15 to defrost the outer wall of the vaporization branch pipe 18. Each defrosting component 5 includes two opposing positioning rods 19, a defrosting block 51 slidably connected to each positioning rod 19, a defrosting cylinder 52 fixed to the bottom of the upper ring pipe 16, and a telescopic rod 53 that extends and retracts in multiple stages under the drive of the defrosting cylinder 52. The telescopic end of the telescopic rod 53 is fixed to the defrosting block 51. The defrosting block 51 is provided with positioning holes 511 through which each positioning rod 19 can pass. The defrosting block 51 is positioned between the upper ring pipe 16 and the lower ring pipe 15 by driving the telescopic rod 53 with the driving cylinder and cooperating with each positioning rod 19 and the positioning hole 511. An arc-shaped preheating element is fixed inside the defrosting block 51. The preheating plate 54 and the controlled atmosphere box 1 are equipped with an external power supply, which is electrically connected to the controller 4. The preheating plate 54 is preheated by heating wires embedded in the preheating plate 54 and electrically connected to the external power supply. The heating wires are electrically connected to the external power supply through wires embedded in each positioning rod 19. The wires embedded in each positioning rod 19 are reserved with a margin for the defrosting block 51 to rise and fall. The defrosting cylinder 52 is electrically connected to the controller 4. The preheating plate 54 is also equipped with plastic scrapers 55 that can remove frost from the outer wall of the vaporization branch pipe 18. Each plastic scraper 55 is preheated by the preheating plate 54 and defrosts the outer wall of the vaporization branch pipe 18 by driving the telescopic rod 53 through the defrosting cylinder 52 and driving the defrosting block 51 through the telescopic rod 53.

[0038] The defrosting block 51 is provided with a side scraper 56 coaxially arranged with the side branch pipe 182. Each side scraper 56 performs defrosting treatment on the frost on the side branch pipe 182 as the defrosting block 51 moves.

[0039] Both the plastic scraper 55 and the side scraper 56 can be made of glass fiber filled polytetrafluoroethylene or carbon fiber filled polytetrafluoroethylene. They can remove frost during the defrosting process of the vaporization branch pipe 18 or the side branch pipe 182 without damaging the outer wall of the vaporization branch pipe 18. They can also conduct heat without deformation during the heating process of the preheating plate 54, which greatly improves the efficiency of defrosting and is highly efficient and convenient.

[0040] The control assembly includes a high-pressure temperature control chamber 122, a plate heat exchanger 121, a first manifold 123, a second manifold 124, a connecting pipe 125, an exhaust pipe 126, and multiple outlet pipes 127. The two ends of the plate heat exchanger 121 are connected to the main manifold 112 and the high-pressure temperature control chamber 122 respectively via pipes. An adjusting manifold 113 is also connected to the high-pressure temperature control chamber 122. The first manifold 123 is connected to the high-pressure temperature control chamber 122 via a pipe. The two ends of the connecting pipe 125 are connected to the first manifold 123 and the second manifold 124 respectively. One end of the exhaust pipe 126 is connected to the second manifold 124. One end of each outlet pipe 127 is connected to the exhaust pipe 126. The other end of pipe 127 extends out of regulating chamber 12. The regulating manifold 113 is equipped with a first electromagnetic control valve to control the opening and closing of the regulating manifold 113. The first manifold 123 is equipped with a pressure transmitter. The high-pressure temperature control chamber 122 is equipped with a temperature measuring rod. The connecting pipe 125 is equipped with a shut-off valve, a filter, and a pressure regulating valve to control the opening and closing of the connecting pipe 125. The exhaust pipe 126 is equipped with a flow meter, a temperature transmitter, and a second electromagnetic control valve. Each exhaust pipe 127 is equipped with a low-temperature shut-off valve. The first electromagnetic control valve, temperature measuring rod, pressure transmitter, shut-off valve, filter, pressure regulating valve, flow meter, temperature transmitter, second electromagnetic control valve, and low-temperature shut-off valve are all electrically connected to controller 4.

[0041] This invention also relates to a modified atmosphere method for a carbon-nitrogen integrated air conditioner, comprising the following steps: S1. Parameter setting: Set the standard nitrogen temperature and the standard carbon dioxide temperature on controller 4; S2. Install the inlet pipe: Fix each inlet pipe to each connecting tube 6, and then install each connecting tube 6 to the switching seat 21. During the installation process, the connecting tube 6 is fixedly connected by the thread engagement of the external thread hole and the internal thread of the mounting port 20, and is sealed by the pressure against the sealing gasket 24. As the connecting tube 6 gradually extends into the inlet channel 2a, it gradually pushes open the sealing block 72, and the connecting holes 61 on the insertion part of the connecting tube 6 extend into the inlet channel 2a and communicate with the inlet channel 2a. S3, Introduce liquid nitrogen: Introduce liquid nitrogen into each liquid inlet pipe respectively, and now introduce liquid nitrogen into the main liquid inlet pipe 111; S4, Liquid gas vaporization: Controller 4 sends a drive signal to the exhaust fan 3, and at the same time, controller 4 sends a drive signal to each electromagnetic switching valve to open each vaporization branch pipe 18 and close each side branch pipe 182. Liquid nitrogen enters each vaporization branch pipe 18 through the main liquid inlet pipe 111 and each branch liquid inlet pipe 13. The exhaust fan 3 forms an orderly heat exchange airflow in the controlled atmosphere chamber by cooperating with each air inlet. After the liquid nitrogen in each vaporization branch pipe 18 in the vaporization pipe area is vaporized, it enters the main flow pipe from each branch manifold 14 and flows into the plate heat exchanger 121. S5. Nitrogen gas discharge after vaporization: The nitrogen gas in the main pipe enters the plate heat exchanger 121 for heat exchange treatment, and after entering the high-pressure temperature control chamber 122 for temperature adjustment, the gas is discharged to the connecting pipe 125. After the flow rate and pressure are controlled by the connecting pipe 125, it enters the second manifold 124, and after the flow rate and pressure are controlled again, it is discharged to the exhaust pipe 126. It is then discharged from each outlet pipe 127 to each grain storage silo or grain storage pipe. The amount of nitrogen gas introduced is fed back to the controller 4 through the flow meter. S5.1 Temperature difference regulation: When the temperature of nitrogen in the high-pressure temperature control chamber 122 differs from the set nitrogen temperature, nitrogen after heat exchange is introduced into the regulating manifold 113 to adjust the temperature. When the temperature measuring rod detects that the temperature of nitrogen in the high-pressure temperature control chamber 122 has reached the standard gas temperature, the high-pressure control chamber pressurizes the gas and discharges it to the connecting pipe 125. After the flow rate and pressure are controlled by the connecting pipe 125, the gas enters the second manifold 124 and is discharged to the exhaust pipe 126 after the flow rate and pressure are controlled again. The gas is then discharged from each outlet pipe 127 to each grain storage bin or grain storage pipe. The amount of nitrogen introduced is fed back to the controller 4 through the flow meter, and the amount of nitrogen discharged is set on the display. S6. Defrosting: After the nitrogen in the vaporization pipe area and the regulating vaporization pipe area is completely discharged, the controller 4 sends a drive signal to the external power supply. The preheating plate 54 is heated by the heating wire. At the same time, the controller 4 sends a drive signal to the defrosting cylinder 52. The defrosting cylinder 52 drives the telescopic rod 53 to extend. The defrosting block 51 begins to slide through the cooperation of the positioning rods 19 and the positioning holes 511. During the sliding process, the plastic scraper 55 defrosts the frost on the outer wall of the vaporization branch pipe 18. After the treatment is completed, the controller 4 sends a stop drive signal to the defrosting cylinder 52. The defrosting cylinder 52 drives the telescopic rod 53 and the defrosting block 51 to reset. At the same time, the controller 4 sends a stop heating signal to the external power supply, and the external power supply stops supplying power. S7. Carbon-nitrogen switching: Rotate the switching ring 22. The switching ring 22 rotates through the cooperation of each positioning slip ring 214 and positioning ring groove 223, and simultaneously overcomes the cooperation of the side magnetic block 225 and positioning magnetic block 215. After the switching ring 22 rotates, the liquid passage 2b is rotated to connect with the liquid inlet passage 2a and liquid outlet passage 2c on the other side. Then, liquid carbon is introduced. The liquid carbon enters each vaporization branch pipe 18 through the main liquid inlet pipe 111 and each branch liquid inlet pipe 13. The exhaust fan 3 forms an orderly heat exchange airflow in the controlled atmosphere chamber through the cooperation of each air inlet. After the liquid carbon in each vaporization branch pipe 18 in the vaporization pipe area is vaporized, it enters the main flow pipe from each branch manifold 14 and is introduced into the plate heat exchanger 121. S8. Gasification and carbon dioxide discharge: The carbon dioxide in the main pipe enters the plate heat exchanger 121 for heat exchange treatment, and after entering the high-pressure temperature control chamber 122 for temperature adjustment, the gas is discharged to the connecting pipe 125. After the flow rate and pressure are controlled by the connecting pipe 125, it enters the second manifold 124, and after the flow rate and pressure are controlled again, it is discharged to the exhaust pipe 126. It is then discharged from each outlet pipe 127 to each grain storage silo or grain storage pipe. The amount of carbon dioxide introduced is fed back to the controller 4 through the flow meter, and the amount of carbon dioxide discharged is set on the display. S8.1 Temperature difference regulation: When the temperature of carbon dioxide in the high-pressure temperature control chamber 122 differs from the set carbon dioxide temperature, the heat-exchanged carbon dioxide in the regulating manifold 113 is introduced to adjust the temperature. When the temperature measuring rod detects that the temperature of carbon dioxide in the high-pressure temperature control chamber 122 has reached the standard gas temperature, the high-pressure control chamber pressurizes the gas and discharges it to the connecting pipe 125. After the flow rate and pressure are controlled by the connecting pipe 125, the gas enters the second manifold 124 and is discharged to the exhaust pipe 126 after the flow rate and pressure are controlled again. The gas is then discharged from each outlet pipe 127 to each grain storage silo or grain storage pipe. The amount of carbon dioxide introduced is fed back to the controller 4 through the flow meter. S9. Secondary Defrosting Process: After the carbon dioxide in the vaporization pipe area and the regulating vaporization pipe area is completely discharged, the controller 4 sends a drive signal to the external power supply. The preheating plate 54 is heated by the heating wire. At the same time, the controller 4 sends a drive signal to the defrosting cylinder 52. The defrosting cylinder 52 drives the telescopic rod 53 to extend. The defrosting block 51 begins to slide through the cooperation of each positioning rod 19 and positioning hole 511. During the sliding process, each side scraper 56 defrosts the frost on the outer wall of the side branch pipe 182. After the process is completed, the controller 4 sends a stop drive signal to the defrosting cylinder 52. The defrosting cylinder 52 drives the telescopic rod 53 and the defrosting block 51 to reset. At the same time, the controller 4 sends a stop heating signal to the external power supply, and the external power supply stops supplying power. S10, Circulation: Following the operating steps of S2 to S9, liquid nitrogen and liquid carbon are circulated repeatedly.

[0042] This invention achieves efficient, stable, and precise vaporization and supply of liquid nitrogen and liquid carbon dioxide in a single device through a highly integrated modular design, intelligent process control, and proactive maintenance mechanism. By rotating the switching ring 22, the operator aligns the liquid passage 2b inside the switching ring 22 with any liquid inlet passage 2a, thereby connecting the input pipeline of liquid nitrogen or liquid carbon dioxide and simultaneously closing the other pipeline, achieving rapid and leak-free switching between the two media. The cooperation between the connecting tube 6 and the automatic sealing component 7 ensures automatic sealing when the pipeline is connected / disconnected, guaranteeing the safety and cleanliness of the system. Liquid gas is distributed to multiple parallel vaporization pipe zones and one regulating vaporization pipe zone. The array-type vaporization branch pipes 18 and their parallel side branch pipes 182 with heat dissipation fins 181 in each zone greatly increase the effective surface area and flow path for heat exchange between the cryogenic liquid and the outside. Driven by the controller 4, the exhaust fan 3 starts and, in cooperation with the air inlet at the bottom of the regulating atmosphere box 1, forms an orderly heat exchange airflow from bottom to top, uniformly flowing through the outer surfaces of all vaporization branch pipes 18 and side branch pipes 182 in the vaporization chamber 11. The airflow continuously removes the heat required for vaporization, enabling the liquid medium in the pipe to efficiently and uniformly change into gas. The electromagnetic reversing valve 17 can controllably switch the flow path, selecting to let the liquid gas flow through the main vaporization branch pipe 18 or the parallel side branch pipes 182, thereby avoiding the low temperature generated during the initial vaporization of the liquid gas, which would affect the vaporization effect of the subsequent vaporization of the liquid gas. After vaporization, the gas enters the control unit through the manifold assembly for precise temperature, pressure, and flow control. The gas from the main vaporization pipe area first enters the plate heat exchanger 121 for temperature regulation, and then enters the high-pressure temperature control chamber 122. The temperature measuring rod monitors the temperature in real time. If the temperature does not reach the set standard, the controller 4 opens the first electromagnetic control valve on the regulating manifold 113 to inject the gas from the regulating vaporization pipe area, which may have different temperatures, for rapid mixing and temperature adjustment. The gas that reaches the temperature standard flows through the connecting pipe 125 and the exhaust pipe 126 in sequence under the stable pressure of the high-pressure temperature control chamber 122. The pressure regulating valve, filter, flow meter, temperature transmitter, and second electromagnetic control valve arranged along this path, under the coordination of the controller 4, precisely regulate the gas pressure, filter impurities, and perform closed-loop control and monitoring of the final output flow and temperature. Finally, the gas that meets the preset temperature, pressure, and flow parameters is accurately delivered to the grain storage silo through each outlet pipe 127 equipped with a low-temperature shut-off valve. When defrosting is required, the controller 4 activates the external power supply to power the heating wire in the preheating plate 54, heating it up. The controller 4 drives the defrosting cylinder 52, pushing the defrosting block 51 (containing the preheating plate 54, plastic scraper 55, and side scraper 56) to move axially along the gasification branch pipe 18 and the side branch pipe 182. During the movement, the preheated plastic scraper 55 can physically scrape off the frost layer, and its heat can melt the tightly attached frost, thereby efficiently and thoroughly removing the frost layer on the heat exchange surface and restoring the best heat exchange efficiency. After defrosting, the system is reset and ready for the next gasification operation. The structure is ingenious, efficient, and convenient.

[0043] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of the present invention. It should be understood that the above descriptions are merely specific embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A carbon-nitrogen integrated machine, comprising a sealed controlled atmosphere chamber, wherein the controlled atmosphere chamber has an inner cavity, which is divided into a vaporization chamber and a regulating chamber by a partition plate; the vaporization chamber is provided with a main liquid inlet pipe, a vaporization tube assembly connected to the main liquid inlet pipe, and a manifold assembly for transferring the vaporized gas from the vaporization tube assembly to the regulating chamber; the regulating chamber is provided with a controller and a control component for controlling the temperature, pressure, and quantity of the gas introduced from the manifold assembly before discharge; the two ends of the manifold assembly are respectively connected to the vaporization tube assembly and the control component; the bottom of the controlled atmosphere chamber has an air inlet, and the top of the controlled atmosphere chamber has an air outlet; the air outlet of the controlled atmosphere chamber is provided with an exhaust fan, and the air inlet of the controlled atmosphere chamber has an air inlet; the exhaust fan, driven by the controller, forms an orderly heat exchange airflow in the vaporization chamber through cooperation with each air inlet, which can exchange heat with the vaporization tube assembly; characterized in that: The main inlet pipe is equipped with a switching device for switching between liquid nitrogen and liquid carbon for liquid inlet. The vaporization pipe group includes multiple parallel vaporization pipe zones and a regulating vaporization pipe zone. Each vaporization pipe zone and the regulating vaporization pipe zone are connected to the main inlet pipe through their respective branch inlet pipes. The manifold group includes a main manifold, multiple branch manifolds connected to the vaporization pipe zones, and a regulating manifold. Each vaporization pipe zone is connected to the main manifold through its respective branch manifolds. The regulating vaporization pipe zone is connected to the control component through the regulating manifold. Each vaporization pipe zone and the regulating vaporization pipe zone includes multiple arrayed vaporization branch pipes, a lower connecting pipe connected to each branch inlet pipe, an upper connecting pipe connected to each branch manifold, an upper ring pipe corresponding to and coaxially arranged with each vaporization branch pipe, and a... The system includes a coaxially arranged lower ring pipe and electromagnetic directional valves installed on the upper and lower connecting pipes. Each electromagnetic directional valve is electrically connected to the controller. Each vaporization branch pipe has multiple heat dissipation fins distributed circumferentially along its axis. Each heat dissipation fin extends from one end of the vaporization branch pipe to the other end along its axis. Each heat dissipation fin has a side branch pipe integrally formed with it. The sum of the volumes of all side branch pipes is the same as the volume of the vaporization branch pipe. The upper end of each side branch pipe is connected to the upper ring pipe, and the upper end of each side branch pipe is connected to the lower ring pipe. The upper ends of the upper ring pipe and the vaporization branch pipe converge on the upper connecting pipe, and the lower ends of the lower ring pipe and the vaporization branch pipe converge on the lower connecting pipe. Each electromagnetic directional valve switches the liquid inlet path on each vaporization branch pipe through the controller's drive.

2. The integrated carbon-nitrogen machine according to claim 1, characterized in that: The switching device includes a switching seat fixed on a controlled atmosphere box and a switching ring sleeve rotatably mounted on the switching seat. The switching seat has a switching ring groove coaxially arranged with the switching seat. The switching ring sleeve is coaxially arranged with the switching seat and rotatably connected in the switching ring groove. Both sides of the switching ring sleeve have connecting protrusions. Both sides of the switching ring groove have connecting ring grooves adapted to the connecting protrusions. The outer and inner walls of the connecting protrusions have multiple plastic sealing protrusions evenly distributed along the axis of the connecting protrusions, and each sealing protrusion is coaxially arranged with the connecting protrusion. The inner wall of the connecting ring groove has sealing ring grooves adapted to each sealing protrusion. The switching ring sleeve has a liquid passage parallel to the axis of the switching ring sleeve and capable of allowing different liquid gases to pass through. The switching seat has two liquid inlet channels parallel to the axis of the switching seat and one liquid outlet channel connected to the main liquid inlet pipe. Each liquid inlet channel is divided into two sections by the cutting of the switching ring groove. The switching ring sleeve connects the two sections of the liquid passage with the two sections of any one liquid inlet channel by rotation, while simultaneously closing the two sections of the other liquid inlet channel.

3. The integrated carbon-nitrogen machine according to claim 2, characterized in that: The switching base has two mounting ports communicating with each liquid inlet channel. Each mounting port is equipped with a connecting tube that can be connected to an external liquid inlet pipe. A stop ring coaxially arranged with the liquid inlet channel is provided between each mounting port and the liquid inlet channel. The liquid inlet channel is equipped with a sealing component that can automatically seal the liquid inlet channel when the connecting tube is not inserted. The sealing component includes multiple limiting side sliding grooves distributed circumferentially along the axis of the liquid inlet channel on the inner wall of the liquid inlet channel, a sealing block set in the stop ring, and a sealing block set in the sealing... The block has a limit side slider that is adapted to each limit side slide groove on its side wall, and a return spring set in each limit side slide groove. The two ends of the return spring are fixedly connected to the side wall of the limit side slider and the limit side slide groove, respectively. The sealing block extends into the stop protrusion ring through the sliding cooperation of each limit side slider and the limit side slide groove, and the continuous force of each return spring, and closes the liquid inlet channel. When the connecting tube is inserted into the installation port, the sealing block is pushed open, and after the connecting tube is fixedly installed with the installation port, it is connected to the liquid inlet channel.

4. The integrated carbon-nitrogen machine according to claim 3, characterized in that: The connecting tube includes a connecting part and an mounting part coaxially arranged with the connecting part. The mounting port has an internal thread, and the mounting part has an external thread that can be adapted to the internal thread. The insertion part has a plurality of connecting holes distributed circumferentially along the axis of the insertion part. The side of the stop ring has a sealing gasket. The mounting part is inserted into the mounting port through the threaded engagement of the external thread and the internal thread and is pressed against the sealing gasket. The insertion part pushes open the sealing block while passing through the stop ring through the engagement of the mounting part and the mounting port. The connecting tube is connected to the liquid inlet channel after each connecting hole on the insertion part extends into the liquid inlet channel.

5. A carbon-nitrogen integrated machine according to claim 4, characterized in that: The outer wall of the switching ring sleeve is provided with a plurality of paddles circumferentially distributed along the axis of the switching ring sleeve. The bottom of the switching ring groove is provided with a plurality of positioning slip rings evenly distributed along the axis of the switching ring groove. Each connecting slip ring is coaxially arranged with the switching ring groove. The inner wall of the switching ring sleeve is provided with positioning ring grooves adapted to each connecting slip ring. The switching ring groove is rotatably connected to the switching ring groove through the cooperation of each positioning slip ring and the positioning ring groove.

6. The integrated carbon-nitrogen machine according to claim 5, characterized in that: The sidewall of the switching ring groove is provided with a plurality of positioning magnetic blocks distributed circumferentially along the axis of the switching ring groove on the inner wall of the switching ring groove. The sidewall of the switching ring sleeve is provided with a plurality of side magnetic blocks adapted to each positioning magnetic block. The switching ring sleeve is positioned after rotation by the cooperation of the side magnetic blocks and the positioning magnetic blocks in the initial state or after rotation.

7. A carbon-nitrogen integrated machine according to claim 6, characterized in that: Multiple defrosting assemblies are installed between each upper ring pipe and its corresponding lower ring pipe to defrost the outer wall of the vaporization branch pipe. Each defrosting assembly includes two opposing positioning rods, a defrosting block slidably connected to each positioning rod, a defrosting cylinder fixed to the bottom of the upper ring pipe, and a telescopic rod that extends and retracts in multiple stages under the drive of the defrosting cylinder. The telescopic end of the telescopic rod is fixed to the defrosting block, and the defrosting block has positioning holes through which each positioning rod can pass. The defrosting block is positioned on the upper ring pipe by the drive cylinder driving the telescopic rod and the cooperation of each positioning rod and positioning hole. Between the pipe and the lower ring pipe, an arc-shaped preheating plate is fixedly installed inside the defrosting block. An external power supply is provided on the controlled atmosphere box, and the external power supply is electrically connected to the controller. The preheating plate is preheated by heating wires embedded in the preheating plate and electrically connected to the external power supply. The defrosting cylinder is electrically connected to the controller. The preheating plate is also provided with plastic scrapers that can remove frost from the outer wall of the vaporization branch pipe. Each plastic scraper is preheated by the preheating plate and defrosts the outer wall of the vaporization branch pipe by driving the telescopic rod through the defrosting cylinder and driving the defrosting block through the telescopic rod.

8. A carbon-nitrogen integrated machine according to claim 7, characterized in that: The defrosting block has a side scraper that is coaxially arranged with the side branch pipe. Each side scraper moves with the defrosting block to remove the frost on the side branch pipe.

9. A carbon-nitrogen integrated machine according to claim 8, characterized in that: The control assembly includes a high-pressure temperature control chamber, a plate heat exchanger, a first manifold, a second manifold, a connecting pipe, an exhaust pipe, and multiple outlet pipes. The two ends of the plate heat exchanger are connected to the main manifold and the high-pressure temperature control chamber respectively via pipes. An adjusting manifold is also connected to the high-pressure temperature control chamber. The first manifold is connected to the high-pressure temperature control chamber via a pipe. The two ends of the connecting pipe are connected to the first manifold and the second manifold respectively. One end of the exhaust pipe is connected to the second manifold. One end of each outlet pipe is connected to the exhaust pipe, and the other end of each outlet pipe extends out of the adjusting chamber. The flow pipe is equipped with a first electromagnetic control valve that controls the opening and closing of the manifold. The first manifold is equipped with a pressure transmitter. The high-pressure temperature control chamber is equipped with a temperature measuring rod. The connecting pipe is equipped with a shut-off valve, a filter, and a pressure regulating valve that controls the opening and closing of the connecting pipe. The exhaust pipe is equipped with a flow meter, a temperature transmitter, and a second electromagnetic control valve. Each exhaust pipe is equipped with a low-temperature shut-off valve. The first electromagnetic control valve, temperature measuring rod, pressure transmitter, shut-off valve, filter, pressure regulating valve, flow meter, temperature transmitter, second electromagnetic control valve, and low-temperature shut-off valve are all electrically connected to the controller.

10. A modified atmosphere method for a carbon-nitrogen integrated air conditioner according to claim 9, characterized in that... The following steps are included: S1. Parameter setting: Set the standard nitrogen temperature and the standard carbon dioxide temperature on the controller; S2. Install the inlet pipe: Fix each inlet pipe to each connecting tube, and then install each connecting tube to the switching seat. During the installation process, the connecting tube is fixedly connected by the thread engagement of the external thread hole and the internal thread of the installation port, and is sealed by pressing against the sealing gasket. As the connecting tube gradually extends into the inlet channel, it gradually pushes open the sealing block, and the connecting holes on the connecting tube on the insertion part extend into the inlet channel and communicate with the inlet channel. S3, Introduce liquid nitrogen: Introduce liquid nitrogen into each inlet pipe respectively, and then introduce liquid nitrogen into the main inlet pipe; S4, Liquid gas vaporization: The controller sends a drive signal to the exhaust fan and at the same time sends a drive signal to each solenoid switching valve to open each vaporization branch pipe and close each side branch pipe. Liquid nitrogen enters each vaporization branch pipe through the main liquid inlet pipe and each branch liquid inlet pipe. The exhaust fan forms an orderly heat exchange airflow in the controlled atmosphere chamber by cooperating with each air inlet. After the liquid nitrogen in each vaporization branch pipe in the vaporization pipe area is vaporized, it enters the main flow pipe from each branch manifold and flows into the plate heat exchanger. S5. Nitrogen gas discharge after vaporization: The nitrogen gas in the main pipe enters the plate heat exchanger for heat exchange treatment. After entering the high-pressure temperature control chamber for temperature adjustment, the gas is discharged to the connecting pipe. After the flow rate and pressure are controlled by the connecting pipe, it enters the second manifold and is discharged to the exhaust pipe after the flow rate and pressure are controlled again. It is then discharged from each outlet pipe to each grain storage silo or grain storage pipe. The amount of nitrogen gas introduced is fed back to the controller through the flow meter. S5.1 Temperature difference regulation: When there is a difference between the temperature of nitrogen in the high-pressure temperature control chamber and the set nitrogen temperature, nitrogen after heat exchange is introduced into the regulating manifold to adjust the temperature. When the temperature measuring rod detects that the temperature of nitrogen in the high-pressure temperature control chamber reaches the standard gas temperature, the high-pressure control chamber pressurizes the gas and discharges it to the connecting pipe. After the flow rate and pressure are controlled by the connecting pipe, the gas enters the second manifold and is discharged to the exhaust pipe after the flow rate and pressure are controlled again. The gas is then discharged from each outlet pipe to each grain silo or grain storage pipe, and the amount of nitrogen introduced is fed back to the controller through the flow meter. S6. Defrosting: After the nitrogen in the vaporization pipe area and the regulating vaporization pipe area is completely discharged, the controller sends a drive signal to the external power supply. The preheating plate is heated by the heating wire. At the same time, a drive signal is sent to the defrosting cylinder. The defrosting cylinder drives the telescopic rod to extend. The defrosting block begins to slide through the cooperation of various positioning rods and positioning holes. During the sliding process, the plastic scraper defrosts the frost on the outer wall of the vaporization branch pipe. After the treatment is completed, the controller sends a stop drive signal to the defrosting cylinder. The defrosting cylinder drives the telescopic rod and the defrosting block to reset. At the same time, the controller sends a stop heating signal to the external power supply, and the external power supply stops supplying power. S7. Carbon-nitrogen switching: Rotate the switching ring sleeve. The switching ring sleeve rotates through the cooperation of each positioning slip ring and positioning ring groove, and at the same time overcomes the cooperation of the side magnetic block and positioning magnetic block. After the switching ring sleeve rotates, the liquid passage is rotated to connect with the liquid inlet channel and liquid outlet channel on the other side. Then, liquid carbon is introduced. The liquid carbon enters each vaporization branch pipe through the main liquid inlet pipe and each branch liquid inlet pipe. The exhaust fan forms an orderly heat exchange airflow in the controlled atmosphere chamber through the cooperation of each air inlet. After the liquid carbon in each vaporization branch pipe in the vaporization pipe area is vaporized, it enters the main flow pipe from each branch manifold and is introduced into the plate heat exchanger. S8. Gasification and carbon dioxide discharge: The carbon dioxide in the main pipe enters the plate heat exchanger for heat exchange treatment. After entering the high-pressure temperature control chamber for temperature adjustment, the gas is discharged to the connecting pipe. After the flow rate and pressure are controlled by the connecting pipe, it enters the second manifold and is discharged to the exhaust pipe after the flow rate and pressure are controlled again. It is then discharged from each outlet pipe to each grain silo or grain storage pipe. The amount of carbon dioxide introduced is fed back to the controller through the flow meter. S8.1 Temperature difference regulation: When there is a difference between the temperature of carbon dioxide in the high-pressure temperature control chamber and the set carbon dioxide temperature, the heat-exchanged carbon dioxide is introduced into the regulating manifold to adjust the temperature. When the temperature measuring rod detects that the temperature of carbon dioxide in the high-pressure temperature control chamber reaches the standard gas temperature, the high-pressure control chamber pressurizes the gas and discharges it to the connecting pipe. After the flow rate and pressure are controlled by the connecting pipe, the gas enters the second manifold and is discharged to the exhaust pipe after the flow rate and pressure are controlled again. The gas is then discharged from each outlet pipe to each grain silo or grain storage pipe, and the amount of carbon dioxide introduced is fed back to the controller through the flow meter. S9. Secondary Defrosting Process: After the carbon dioxide in the vaporization pipe area and the regulating vaporization pipe area is completely discharged, the controller sends a drive signal to the external power supply. The preheating plate is heated by the heating wire. At the same time, a drive signal is sent to the defrosting cylinder. The defrosting cylinder drives the telescopic rod to extend. The defrosting block begins to slide through the cooperation of various positioning rods and positioning holes. During the sliding process, each side scraper defrosts the frost on the outer wall of the side branch pipe. After the process is completed, the controller sends a stop drive signal to the defrosting cylinder. The defrosting cylinder drives the telescopic rod and the defrosting block to reset. At the same time, the controller sends a stop heating signal to the external power supply, and the external power supply stops supplying power. S10, Circulation: Following the operating steps of S2 to S9, liquid nitrogen and liquid carbon are circulated repeatedly.

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