Nitrogen production, storage and charging equipment and multi-working-condition protection use method
Patent Information
- Application Number
- CN202610893137.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2026-06-21
- Publication Date
- 2026-07-24
Smart Images
Figure CN122447635A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the fields of inert gas preparation, nitrogen storage and filling equipment, dehumidification and anti-oxidation of sealed cavities, adaptive constant temperature heat insulation and heat dissipation, low temperature cold resistance and antifreeze protection, and energy-saving and environmental protection equipment. Specifically, it relates to a multi-condition nitrogen production, storage and filling equipment and a method for using adaptive constant temperature heat insulation cold resistance and anti-oxidation protection. The equipment can switch between three installation modes: embedded, external, and independent handheld. It supports single-unit multi-channel simultaneous linkage and multi-unit parallel random linkage. It is suitable for various static sealed cavities such as electronic chassis, home appliance cavities, industrial power shells, energy storage chambers, and building insulation layers, providing long-term protection against inert gas temperature, cold, and oxidation under various conditions. It can be adapted to all working conditions, including indoor normal temperature, high summer temperature, and outdoor extreme cold and low temperature. Background Technology
[0002] Existing nitrogen generators on the market are divided into two categories: high-pressure nitrogen generators using air compressors / pumps and low-pressure nitrogen generators used in laboratories. Both have significant technical shortcomings. Air compressor and pump nitrogen generators are mature, mass-produced equipment that can be purchased and reused. However, their piston / screw compression structures contain built-in lubricating oil, which continuously releases oil mist that contaminates the membrane filaments, causing nitrogen purity to decline year by year. They lack pre-treatment with negative pressure vacuum, making it impossible to remove moisture, oxygen, and oily exhaust gases from the chamber in advance, which can easily lead to oxidative thermal degradation of the equipment. The equipment is bulky, uses only mains power, lacks a portable lithium battery structure, and only provides single-function gas filling. It does not have multi-functional protection capabilities such as heat insulation, cooling, temperature control, cold resistance, antifreeze, and oxidation resistance, making it unsuitable for the equipment start-up and insulation protection needs of outdoor low-temperature and high-altitude frigid environments. Existing low-pressure booster nitrogen supply equipment is mostly laboratory-grade micro-supply devices, lacking a post-exhaust fan, resulting in insufficient low-pressure gas source thrust, airflow stagnation in the membrane chamber, and poor separation efficiency. It also lacks a two- or three-stage modular filtration system; a negative pressure + nitrogen replenishment micro-circulation architecture; a three-form assembly structure; and a pressure and power integrated control system. This makes it unable to cover all scenarios, including household food preservation, industrial motors, robots, and building mezzanines. In particular, it lacks core protection functions such as low-temperature insulation and freeze-proof start-up, leading to extremely poor adaptability to various operating conditions. Furthermore, existing publicly available technologies do not possess a complete integrated architecture that integrates self-developed low-pressure oil-free nitrogen production with purchased high-pressure nitrogen as a dual gas source, differentiated auxiliary components for high and low pressure operating conditions, free three-form assembly, synchronous micro-circulation with dual gas paths, multi-dimensional integrated constant temperature cold protection and anti-oxidation protection for nitrogen, and multi-unit coordinated gas supply. This represents a significant technological gap. Summary of the Invention
[0003] This invention uses a self-developed oil-free low-pressure booster pump nitrogen generator architecture as its core innovation. Air compressors, air pumps, and commercially available nitrogen generators are only optional external backup gas sources, and the purchased gas source hardware itself is existing publicly known technology. The core innovation of this invention lies in the complete integrated mechanical structure and supporting process, specifically including: a high and low pressure dual-condition differentiated matching structure adaptable to multiple gas sources; physically isolated synchronous operation dual collaborative gas paths; a graded, detachable, modular filtration system; three types of standardized assembly structures: embedded / external / handheld; integrated pressure and power control; dynamic micro-circulation of negative pressure impurity removal and micro-positive pressure nitrogen replenishment in the chamber; nitrogen constant temperature insulation; low temperature cold resistance and antifreeze; anti-oxidation multi-coupling protection system; and single-unit multi-path distribution pipelines and multi-unit parallel linkage distribution pipelines.
[0004] The temperature and pressure sensors, temperature controllers, PLCs, electrical control programs, and other electrical components are all commercially available, outsourced parts. This invention protects the combination, linkage, assembly, and working condition coordination architecture of the above hardware. Dual-circuit coordinated assembly
[0005] It includes a physically isolated, synchronously operating negative pressure vacuum dehumidification gas path and a nitrogen boosting and nitrogen charging gas path; the negative pressure gas path is equipped with an independent negative pressure vacuum pump and a one-way check valve, which are essential and indispensable structures for all working conditions. It removes moisture, oxygen-containing waste gas, oil and volatile impurities from the cavity in advance. When the cavity temperature exceeds the standard, the negative pressure vacuum pump specifically extracts the high-temperature hot air and hot waste gas accumulated in the upper part of the cavity, preventing hot gas backflow from interfering with the nitrogen supply path and ensuring stable operation of the equipment. Air booster supply unit (dual air source, dual operating conditions)
[0006] (1) Low-pressure nitrogen operation (core recommendation): The gas source is an oil-free low-pressure booster pump, with no piston lubricating oil and no oil mist precipitation; the membrane chamber outlet is equipped with a rear-mounted micro-wind guide exhaust motor, and the two are mechanically and electrically controlled to start and stop synchronously. The blower will not start if the booster pump does not reach the rated pressure, and the blower will be powered off synchronously if the pump fails to stop, thus compensating for insufficient thrust of low-pressure airflow; equipped with two-stage filtration (primary filter screen + intermediate precision filter), stably producing 95%~99% high-purity nitrogen; suitable for small lithium battery portable, household food preservation, and micro sealed cavity, which can meet the high and low temperature protection needs of small equipment under all operating conditions.
[0007] (2) High-pressure nitrogen operation (alternative compatibility): The air source can be a self-developed air pump or a commercially available air compressor nitrogen generator; the high-pressure air source itself has sufficient pressure, and the rear guide fan is eliminated; because the air source contains oil mist, an advanced pre-membrane purification layer is added to form a complete three-stage deep oil removal filtration assembly, which stably produces 95%~99.2% high-purity nitrogen; it is suitable for medium and large industrial high-flow continuous protection and can take into account the high temperature heat dissipation, low temperature antifreeze and long-term operation needs of industrial equipment. Multi-stage filtration and screening assembly
[0008] Modular and detachable structure, matched to different working conditions: low-pressure small models use two-stage filtration; high-pressure medium and large models use three-stage filtration, which specifically intercepts dust, water vapor, and oil and gas impurities, extends the service life of the three-layer gradient composite membrane, and ensures stable gas purity under high and low temperature conditions. Three-layer gradient composite membrane purification chamber
[0009] The membrane fiber features a three-layer micron-gradient hollow fiber structure: an inner 50μm supporting base membrane, a middle 0.15μm oxygen-nitrogen separation skin, and an outer 25μm protective and breathable layer. It is modularly assembled, with small units featuring two-stage membrane modules and medium to large units featuring three-stage modules. The number of modules can be freely increased or decreased and connected in parallel according to the cavity flow rate. The inner 50μm supporting base membrane is a porous, rigid support matrix that evenly disperses compressed air entering the membrane fiber, preventing concentrated airflow impact on local membrane layers, buffering airflow pressure, distributing internal and external pressure differences, and preventing membrane deformation. The middle 0.15μm ultrathin oxygen-nitrogen separation skin is the core screening functional layer, relying on the difference in permeation rates of nitrogen, oxygen, water vapor, and carbon dioxide molecules to achieve precise oxygen-nitrogen separation. The outer 25μm loose protective and breathable layer is dustproof, waterproof, and resistant to impurities, providing comprehensive protection for the core separation skin. The three-layer structure is integrally co-extruded and cannot be separated, with a total membrane wall thickness of 75.15μm, resulting in a precise structure and high separation accuracy.
[0010] This invention features a triple-layer purely mechanical anti-membrane tear protection structure: a one-way check valve at the pump outlet, a pressure relief and balance bypass between the membrane chamber and the blower, and a normally open exhaust gas pressure relief channel on the outside of the membrane. Even under power failure, fault, or no-load conditions, it can automatically balance the pressure difference inside and outside the membrane chamber, completely eliminating the problems of tearing, breaking, and damage to the ultra-thin membrane fibers caused by low pressure, negative pressure, or high pressure backflow. It solves a long-standing pain point in the industry from the root of the hardware and ensures stable operation of the equipment under all temperature conditions. Nitrogen storage and charging assembly
[0011] Small models are equipped with built-in flexible nitrogen storage colloid for pressure stabilization and buffering; medium and large models have reserved standard interfaces for external metal gas storage tank expansion; the nitrogen storage colloid outlet is equipped with a main gas supply valve, which uniformly and unidirectionally controls the nitrogen supply to the protective cavity, avoiding pipeline pressure buildup, unstable gas pressure, and delayed gas exchange, providing a stable low-temperature nitrogen source for 65℃ over-temperature self-circulation operation, while continuously supplying constant-temperature nitrogen for low-temperature operation, and constructing a cold-proof and heat-insulating protective layer for the cavity. Intelligent electronic control testing assembly
[0012] It integrates a pressure detection module, a power detection module, and an adaptive control module. The pressure module monitors the negative pressure of the chamber, the pressure difference of the membrane chamber, and the positive pressure of nitrogen output in real time, and adaptively adjusts the gas source and fan output. The power module monitors the charging and discharging of the lithium battery and the mains load, and realizes overload, undervoltage, and overcurrent protection. The temperature module collects the real-time temperature inside the sealed chamber. When the detected temperature is higher than the 65℃ custom high temperature threshold, the electronic control system synchronously triggers the entire power linkage, starts the self-circulation heat dissipation mode inside the chamber, and continuously links the dual air paths under normal conditions to maintain the dynamic micro-circulation balance of negative pressure for impurity removal and slight positive pressure for nitrogen replenishment, taking into account both high-temperature heat dissipation and temperature control and low-temperature temperature locking and cold resistance. Adaptive cavity internal self-circulating heat dissipation core structure
[0013] The equipment is equipped with a dedicated three-channel closed-loop convection self-circulation system, achieving autonomous closed-loop circulation of hot and cold gases within the cavity throughout the entire process, eliminating the need for external exhaust: the upper negative pressure heat extraction circuit connects to a negative pressure vacuum pump to specifically extract high-temperature hot waste gas and hot waste nitrogen accumulated at the top of the cavity; the bottom low-temperature nitrogen supply circuit connects to the nitrogen storage output main valve, continuously supplying low-temperature high-purity nitrogen to the bottom of the cavity; in conjunction with the cavity's built-in flow guide baffles to physically separate airflow channels, forcibly forming a directional, closed convection with "low-temperature cold nitrogen entering from the bottom and high-temperature hot waste gas exiting from the top." The entire structure automatically activates when the cavity temperature exceeds 65°C, replacing hot air throughout the cavity without dead zones and uniformly cooling it, constructing a complete self-circulating heat dissipation system within the cavity. Under normal conditions, it only maintains static inertization micro-circulation protection with nitrogen, while relying on the inert thermal insulation properties of nitrogen to prevent external low-temperature cold air from intruding into the cavity. Adaptive multifunctional nitrogen protection structure
[0014] Utilizing the low thermal conductivity and inert stability of nitrogen, this technology simultaneously achieves the following for various self-heating sealed cavities: high-temperature heat insulation, active cooling and heat dissipation, year-round constant temperature balance, low-temperature insulation, cold and freeze protection in extremely cold environments, long-term oxygen isolation and oxidation resistance, suppression of chip / coil thermal decay, and prevention of high-temperature demagnetization of magnets in new energy motors. It effectively solves problems such as cold air intrusion, internal medium condensation, start-up delays, and component freezing damage in outdoor low-temperature, winter, and high-altitude environments, comprehensively ensuring stable operation of equipment under all high and low temperature conditions. Three types of switchable standardized assembly structures
[0015] ① Embedded type: The body is slim and lightweight, and it is completely embedded in the internal cavity of the computer, cabinet, and motor housing; ② External type: It comes with a fixed bracket and sealed pipeline, and is mounted on the outer wall of the equipment, suitable for retrofitting old equipment; ③ Independent handheld mobile type: It is exclusive to small lithium motor models and can be used alone for the protection of micro and small equipment such as home, food preservation, and outdoor use; large and medium-sized units can be equipped with an independent floor-mounted assembly mode for centralized gas supply. The multi-form structure can adapt to the high and low temperature protection installation needs of different scenarios. Multi-condition linkage gas distribution system
[0016] ① Synchronous linkage: Each main unit has multiple branch pipes, each equipped with an independent one-way valve and sensor mounting position; when a single branch cavity triggers high-temperature heat dissipation, only the corresponding branch performs circulating heat exchange, while the other branches maintain normal inert gas protection and low-temperature insulation, without interfering with each other; ② Random parallel linkage of multiple units: Multiple devices are connected to the cluster gas supply through a common stabilizing gas storage main pipe. When multiple cavities heat up simultaneously, all units work together to produce nitrogen gas, and simultaneously start internal self-circulating heat dissipation for multiple cavities, which is suitable for large-area, multi-equipment industrial centralized high and low temperature conditions protection.
[0017] Normal standby mode: The booster pump intermittently produces nitrogen, and the nitrogen is stored in a flexible nitrogen storage colloid voltage stabilizer. The cavity maintains an oxygen-free, dry, and inert environment. The whole machine operates with low power consumption and energy saving and emission reduction. There is no forced convection circulation inside the cavity. It relies on the static nitrogen layer to achieve daily cold and heat insulation and anti-oxidation protection.
[0018] 65℃ High Temperature Chamber Internal Adaptive Self-Circulating Heat Dissipation Mode (Core Operating Condition): Temperature sensors monitor the internal temperature of the sealed chamber in real time. When the chamber temperature rises to a custom high temperature trigger threshold of 65℃, three power systems—the negative pressure vacuum pump, the booster gas source, and the low-pressure operating condition rear-mounted guide fan—start simultaneously and instantly. The negative pressure gas path continuously extracts the high-temperature hot waste gas and hot waste nitrogen accumulated in the upper part of the chamber. The booster gas source produces brand-new low-temperature high-purity nitrogen at full load, which is then continuously replenished from the bottom of the chamber after being stabilized and buffered. Under the forced guidance of the built-in guide baffle in the chamber, the low-temperature nitrogen rises at a uniform speed, and the high-temperature waste gas in the chamber sinks and is quickly extracted by the negative pressure. This forms a complete closed-loop directional convection of bottom-in cold nitrogen and top-out hot waste gas inside the sealed chamber, achieving full-area self-circulating heat exchange inside the chamber, rapidly and uniformly reducing the chamber temperature. The gas circulates only in a closed loop inside the chamber throughout the entire process, without the need for an external exhaust structure.
[0019] Automatic shutdown and reset mode: When the overall temperature of the cavity drops to or below the user-set low temperature threshold, all three power mechanisms are shut down simultaneously, the internal self-circulation heat dissipation process of the cavity ends, and the equipment returns to normal nitrogen storage and pressure stabilization, static inertization and cold protection mode.
[0020] Multi-unit linkage expansion process: Multiple devices are connected in parallel to a common gas storage main pipe, and the low-temperature nitrogen produced by each unit is uniformly buffered in the main pipe; when the temperature of any protected branch cavity exceeds the 65°C threshold and triggers the self-circulation heat dissipation requirement, the main pipe uniformly and evenly distributes low-temperature nitrogen, and multiple units supply gas synchronously and collaboratively. Multiple cavities can independently or synchronously start internal hot and cold convection self-circulation heat dissipation, while maintaining stable low temperature protection throughout the entire area, adapting to the needs of large-scale multi-condition high and low temperature synchronous protection.
[0021] Household food preservation containers, outdoor small wearable sealed devices, desktop / laptop interiors, refrigerator / freezer / air conditioner cavities, home appliance cavities, AI computing cabinets, industrial control chassis, new energy drive motor cavities, industrial humanoid robot core cavities, energy storage battery compartments, generator sets, building hollow steel membrane / insulation interlayer, thermal insulation interlayer, insulated glass, static sealed rubber cavities, and other types of sealed cavities. They can adapt to complex working conditions such as indoor normal temperature, summer high temperature, outdoor extreme cold low temperature, and high altitude, achieving multiple protections such as high temperature constant temperature heat dissipation, low temperature cold insulation and cold resistance, antifreeze start-up, and anti-oxidation.
[0022] The scope of protection of this invention includes: the complete dual-isolation synchronous gas path mechanical layout, the dual-gas-source high and low pressure matching structure, the synchronous linkage mechanism of the booster pump and the rear fan, the three-layer gradient modular membrane module, the triple anti-membrane tear mechanical structure, the graded filtration modular components, the flexible nitrogen storage and pressure stabilization structure, the three-form assembly hardware structure, the multi-path / multi-unit linkage distribution pipeline, the complete mechanical architecture of the cavity micro-circulation constant temperature cold protection and anti-oxidation protection, and the supporting application process methods. Temperature and pressure sensors, temperature controllers, solenoid valves, PLCs, electrical control circuit boards, and automatic control programs are all commercially available, commercially mature, and readily available technologies. This invention protects the combined and matched structure, linkage assembly, and working condition coordination architecture of the aforementioned hardware. Beneficial effects
[0023] This invention features a unique dual-air-source primary and secondary architecture, with its core innovation being a self-developed oil-free low-pressure booster system. Purchased air compressors / air pumps serve only as backup air sources. While the hardware is interchangeable, the entire integrated matching logic is exclusively original, significantly raising the barrier to plagiarism and demonstrating strong patent creativity and stability.
[0024] This invention distinguishes between high and low pressure systems, and is equipped with two-stage / three-stage filtration and a design that adapts to both small, portable, and oil-free household needs for freshness preservation and cleanliness, as well as industrial needs for high-flow continuous gas supply, providing full coverage for all scenarios.
[0025] This invention features a forced negative pressure pretreatment unit configured for all operating conditions, constructing a dynamic micro-circulation system of negative pressure impurity removal and micro-positive pressure nitrogen replenishment within the cavity. This simultaneously achieves integrated protection including dehumidification, deoxygenation, cooling, temperature control, cold insulation, freeze-proof start-up, and oxidation resistance. It solves multiple industry defects of traditional equipment, such as unidirectional air filling, the existence of heat accumulation dead zones, residual water and gasoline contamination in the cavity, and lack of low-temperature protection capabilities, significantly improving the protection performance under all operating conditions.
[0026] This invention features a unique, sealed internal thermal convection self-circulation architecture. Using 65℃ as the standard trigger threshold, it synchronously triggers negative pressure heating and pressurized nitrogen replenishment. Relying on the cavity's flow-guiding baffles, it achieves comprehensive, dead-angle-free self-circulating heat dissipation, completely resolving the industry pain points of asynchronous heat exchange, uneven heat dissipation, and high-temperature heat accumulation in traditional equipment, significantly improving protection. Simultaneously, leveraging the ultra-low thermal conductivity of high-purity nitrogen, it forms a stable thermal barrier in low-temperature and frigid conditions, preventing external cold air from intruding into the cavity and locking in the equipment's own residual heat. This effectively avoids problems such as frost and condensation on internal components, solidification of lubricating media, and equipment startup failure, greatly enhancing the equipment's adaptability to complex outdoor environments at low temperatures and high altitudes.
[0027] This invention features a low-pressure booster pump with an oil-free structure that prevents oil mist from contaminating the membrane fibers, ensuring long-term stable nitrogen purity, long filter replacement cycle, and extremely low maintenance costs. For high-pressure operation, it is equipped with a three-stage oil removal filter, making it compatible with mature air compressor equipment on the market and significantly reducing the development and manufacturing costs of industrial equipment.
[0028] This invention employs a triple pure mechanical differential pressure protection structure, which solves the industry-wide problem of asynchronous operation and negative pressure tearing of ultra-thin gradient membrane fibers from the hardware root. The equipment has a low failure rate, a significantly extended service life, and greatly reduces the replacement of consumables and equipment scrapping. It has significant energy-saving, emission-reduction, carbon reduction and environmental protection value.
[0029] This invention features low overall power consumption, eliminates the need for long-term full-load operation, intermittent nitrogen generation, and intelligent start-stop, significantly reducing energy consumption compared to traditional industrial nitrogen generators. Multiple units work together to balance the load, avoiding waste due to idling or overload, and meeting the energy-saving and carbon-reduction requirements of long-term industrial operation, aligning with the development direction of green equipment and energy-saving and environmental protection industries.
[0030] This invention can be freely switched between three assembly forms: embedded, external, and independent handheld, adapting to various needs such as new machine matching, old equipment renovation, and temporary outdoor protection; large and medium-sized models can be expanded to an independent ground-based centralized gas supply mode.
[0031] This invention integrates pressure and power dual closed-loop intelligent electrical control, automatic monitoring and adaptive adjustment, to achieve unattended long-term protection; it is equipped with multi-path and multi-unit parallel linkage pipelines, a single unit can protect multiple chambers, and multiple units can be clustered and coordinated, adaptable to large-scale multi-condition synchronous protection.
[0032] This invention breaks through the traditional nitrogen generation equipment's single gas production function. Relying on the nitrogen medium, it simultaneously achieves multiple long-term protections, including heat insulation, cooling, constant temperature, low-temperature cold resistance and antifreeze, cold start protection, anti-oxidation, demagnetization of antimagnetic steel, and prevention of thermal decay of electronic components. It takes into account the core needs of high-temperature heat dissipation and temperature control as well as low-temperature cold resistance and antifreeze, expanding into new high and low temperature all-condition application scenarios in multiple fields such as household food preservation, electronics, home appliances, new energy motors, electromechanical equipment, industrial robots, and building insulation. Detailed Implementation
[0033] Example 1: Low-Pressure Nitrogen Operation – Household Food Preservation, Protection of Small Precision Equipment Overall structure: essential negative pressure vacuum pump + miniature oil-free low-pressure booster pump + rear-mounted exhaust and flow guiding motor + two-stage filter assembly + two-stage three-layer gradient composite membrane module + built-in lithium battery + miniature flexible nitrogen storage colloid; only supports three assembly methods: embedded, external, and independent handheld. Operating Procedure: The negative pressure vacuum pump is activated to extract moisture and oxygen from the interior of household food preservation containers and small wearable devices; the low-pressure booster pump produces oil-free clean air at a low speed and smoothly, and the rear fan guides the airflow through two stages of filtration and membrane chambers, producing 95%~99% high-purity nitrogen gas that is then introduced into the cavity under slight positive pressure, forming a dry, oxygen-free, and constant-temperature micro-circulation; under normal conditions, the nitrogen layer can effectively block external low-temperature cold air, preventing small precision components from freezing and food from spoiling at low temperatures, and ensuring normal start-up and shutdown of the equipment in low-temperature environments; when the cavity temperature reaches the 65℃ threshold, the internal self-circulation heat dissipation system, which automatically activates negative pressure heating and bottom-cooled nitrogen replenishment, quickly cools and controls the temperature, achieving long-term food preservation, moisture and oxidation prevention for small precision instruments, prevention of heat decay, and stable protection under all high and low temperature conditions.
[0034] Example 2: High-Pressure Nitrogen Operation – Long-Term Protection for High-Flow Industrial Projects Overall structure: essential negative pressure vacuum pump + commercially available air compressor nitrogen generator + three-stage deep oil removal filter assembly + three-stage gradient membrane module + external metal air tank, no rear exhaust fan; supports embedded, external, and independent floor mounting, the main unit has multiple branch pipes that can be linked together, and multiple units can be connected in parallel and linked randomly. Operating Procedure: The negative pressure vacuum pump pre-dehumidifies and deoxygenates the new energy motor, industrial humanoid robot, energy storage chamber, and AI cabinet; the purchased air compressor produces high-pressure compressed air which is filtered three times to remove oil mist impurities, and the high-pressure airflow autonomously penetrates the membrane chamber to produce 95%~99.2% high-purity nitrogen, which is continuously supplied to the sealed self-heating chamber; under normal conditions, relying on the thermal insulation properties of nitrogen, it resists the extreme low temperatures of outdoor winters and high altitudes, locks in the residual heat of the equipment, and ensures the low-temperature fault-free start-up and operation of industrial robots, motors, and energy storage equipment; when the temperature of the industrial chamber rises to the 65℃ trigger threshold, the negative pressure vacuum pump extracts the high-temperature accumulated heat at the top of the chamber at full speed, and the low-temperature nitrogen in the gas tank is continuously supplied from the bottom of the chamber, forming a self-circulating heat dissipation of hot and cold convection inside the chamber, simultaneously achieving heat insulation and cooling, constant temperature resistance, anti-oxidation, and long-term industrial protection to prevent the magnets from demagnetizing at high temperatures; when a single chamber heats up, only the micro-circulation heat dissipation of that branch is activated, while the other chambers maintain normal high and low temperature balance protection.
[0035] Example 3: Large-scale independent ground-mounted centralized gas supply unit Multiple sets of three-stage membrane modules are connected in parallel, with an external large-capacity gas storage tank. They are installed independently on the ground and come standard with a common parallel gas storage main pipe interface for multi-unit cluster linkage. They are suitable for medium and large power plant energy storage, electrical control rooms, data rooms, cold storage, and large-area building insulation interlayers. They can customize the high-temperature start-up and low-temperature shutdown temperature control ranges. Under normal conditions, they provide a stable nitrogen insulation and cold protection layer for building interlayers and cold storage equipment, blocking the conduction of internal and external temperatures and reducing energy consumption. When the multi-area cavities are simultaneously heated to the 65°C threshold, all linked units work together to supply low-temperature nitrogen, and the entire area synchronously completes the internal self-circulation constant temperature protection of the cavity, realizing intelligent protection under high and low temperature conditions in large-scale scenarios.
[0036] The above embodiments are only used to explain the technical solution of the present invention and are not intended to limit the scope of protection. Equivalent substitutions, structural fine-tuning, and working condition expansion based on the structure, working condition matching, and micro-circulation protection logic of the present invention are all considered to be within the scope of protection of the present invention. Attached Figure Description
[0037] Figure 1 is a schematic diagram of the complete dual-air-path principle of the device of the present invention; Figure 2 is a schematic diagram of the overall assembly structure of the present invention; Figure 3 is a cross-sectional structural diagram of the three-layer gradient composite hollow fiber membrane of the present invention.
[0038] Explanation of reference numerals in the attached figures Figure 1 1 - Negative pressure vacuum pumping gas circuit; 2 - Nitrogen generation and pressurization gas supply circuit; 3 - One-way check valve; 4 - Pressure relief and balance bypass; 5 - Upper chamber pumping circuit; 6 - Bottom chamber nitrogen supply circuit; Figure 2
[0039] 1 - Negative pressure vacuum motor; 2 - Low-pressure booster pump; 3 - Rear-mounted micro-airflow guide fan; 4 - Three-layer gradient composite membrane purification chamber; 5 - Multi-stage filtration and screening assembly; 6 - Flexible nitrogen storage colloid; 7 - Main gas supply valve; 8 - Electrical control and detection assembly; 9 - Reserved interface for external gas storage tank; 10 - Unit linkage diversion pipeline interface; Figure 3
[0040] 1 - Inner layer 50μm support base membrane; 2 - Middle layer 0.15μm oxygen-nitrogen separation skin; 3 - Outer layer 25μm protective breathable layer.
Claims
1. A multi-condition nitrogen generation, storage, and charging device, characterized in that: The system includes a dual-air-path coordinated assembly, an air booster supply unit, a multi-stage filtration and screening assembly, a three-layer gradient composite membrane purification chamber, a nitrogen storage and charging assembly, an intelligent electronic control and detection assembly, an adaptive nitrogen constant-temperature protection structure, a multi-form assembly structure, and a unit-linked distribution air path. The dual-air-path coordinated assembly is an essential structure for all operating conditions, including a physically isolated and synchronously operating negative pressure vacuum dehumidification air path and a booster nitrogen charging air path. The negative pressure dehumidification air path is equipped with an independent negative pressure vacuum pump and a one-way check valve to pre-extract moisture, oxygen-containing waste gas, and volatile oil impurities from the sealed cavity, and to extract high-temperature hot waste gas from the upper part of the cavity when the cavity exceeds its temperature. The air booster supply unit operates in two equivalent modes: a low-pressure nitrogen mode using an oil-free low-pressure booster pump as the air source, coupled with a rear-mounted micro-wind guide exhaust motor, both of which are forced to start and stop synchronously, combined with a two-stage filtration structure, producing 95%~99% nitrogen. Oil-free high-purity nitrogen; for high-pressure nitrogen operation, a self-developed air pump or a commercially available air compressor nitrogen generator is used as a backup gas source, eliminating the need for a post-flow guide fan, and a three-stage deep oil removal filtration assembly is configured to produce 95%~99.2% high-purity nitrogen; the membrane fiber of the three-layer gradient composite membrane purification chamber is integrally formed with a 50μm inner supporting base membrane, a 0.15μm middle separation skin layer, and a 25μm outer protective layer. Small models are equipped with two-stage membrane modules, and medium and large models are equipped with three-stage membrane modules. The number of modules can be increased, decreased, or connected in parallel as needed; the nitrogen generation circuit is equipped with a triple mechanical anti-membrane tear structure: a one-way check valve at the pump outlet, a pressure relief balance bypass between the membrane chamber and the fan, and a normally open exhaust gas pressure relief channel on the outside of the membrane; The nitrogen storage and filling assembly includes a small-sized unit with a built-in flexible nitrogen storage colloid, and a medium-to-large-sized unit with a reserved interface for external metal gas storage tank expansion. The colloid outlet is equipped with a main gas supply valve, and low-temperature nitrogen is uniformly delivered to the bottom of the cavity for overheat self-circulation cooling and low-temperature insulation. The intelligent electronic control and detection assembly integrates a pressure detection module, a power detection module, and a temperature control module. The temperature module monitors the cavity temperature, and at a high temperature threshold of 65℃, it synchronously links a negative pressure vacuum pump, a booster gas source, and a rear-mounted fan to start the internal self-circulation of the cavity. The linkage of dual gas paths forms a dynamic micro-circulation of negative pressure purification and micro-positive pressure nitrogen replenishment in the cavity. Relying on nitrogen as a medium, the self-heating cavity achieves multiple protections, including heat insulation, cooling, constant temperature, cold insulation, low-temperature start-up protection, anti-oxidation, demagnetization of anti-magnetic steel, and prevention of component thermal decay. The unit is available in three assembly forms: embedded, external, and independent handheld mobile. Large and medium-sized units can be expanded to be installed independently on the ground. The unit's linkage distribution gas circuit includes multiple branch pipes within the same unit and a common gas storage main structure for multiple units in parallel. Multiple cavities of a single unit can be independently controlled, and multiple units can be clustered together for coordinated gas supply. The temperature sensor, electrical control module, and interlocking program of the equipment are mature existing technologies purchased from external suppliers. This invention protects the entire mechanical structure, gas circuit, power linkage, membrane module, filtration, nitrogen storage, assembly, linkage pipeline and microcirculation protection, logic design, and hardware structure.
2. The multi-condition nitrogen generation, storage, and charging equipment according to claim 1, characterized in that: The low-pressure booster pump has a piston-free lubrication structure, and no oil mist is released when it produces gas; the rear-mounted micro-wind guide fan is located at the gas outlet of the membrane chamber, which only pulls the purified nitrogen to flow, making up for the insufficient thrust of the low-pressure air source; the high-pressure air compressor / air pump relies on its own high pressure to push the airflow, without the need for a rear-mounted traction fan, and the three-stage filter assembly is specially designed to intercept oil and gas impurities generated by the air source.
3. The multi-condition nitrogen generation, storage, and charging equipment according to claim 1, characterized in that: The two-stage filtration system includes a primary air filter and a secondary precision filter, suitable for small lithium-ion portable devices, household food preservation, and micro-sized chambers; the three-stage filtration system adds an advanced pre-membrane oil removal and purification layer on top of the two-stage system, suitable for long-term continuous nitrogen production from industrial oily gas sources.
4. The multi-condition nitrogen generation, storage, and charging equipment according to claim 1, characterized in that: Small models only support embedded, external, and independent handheld assembly; medium-sized models are compatible with all three basic assembly forms and can be equipped with an independent floor-standing mode; large centralized gas supply units only use independent floor-standing assembly.
5. A multi-condition nitrogen generation, storage, and charging device according to claim 1, characterized in that: When operating in tandem, each main unit has multiple branch pipes with independent one-way valves. When the temperature of a single branch cavity rises to 65°C, only the corresponding branch's micro-circulation heat dissipation is triggered, while the remaining branches maintain normal inertial protection and low-temperature insulation protection. When multiple units are connected in parallel and share a common stabilizing gas storage main pipe, all units work together to supply low-temperature nitrogen when multiple cavities are heated synchronously.
6. A multi-condition nitrogen generation, storage, and charging device according to claim 1, characterized in that: It is compatible with static sealed cavities including indoor and outdoor wearable sealed devices, small outdoor wearable sealed devices, household food preservation containers, desktop / laptop cavities, TV cavities, refrigerator / freezer / air conditioner cavities, cavities of various home appliances, AI computing power data cabinets and hangars, AI computing power cabinets, industrial control chassis, new energy cavity drive motors, new energy drive motor cavities, industrial humanoid robots, industrial humanoid robot core cavities, semiconductor core chip cavities, energy storage battery compartments, energy storage battery compartments, generator sets, building thermal insulation sandwich cavities, building hollow steel membrane thermal insulation sandwich cavities, insulation sandwich cavities, interlayer sandwich glass cavities, insulated glass, static sealed rubber cavities, and various sealed cavities with internal heat generation conditions. It can adapt to the above-mentioned cavities in complex high and low temperature conditions, taking into account both high temperature heat dissipation and constant temperature and low temperature cold insulation and antifreeze start-up protection needs.
7. A method for using a multi-condition nitrogen generation, storage, and charging equipment with adaptive constant temperature insulation, cold resistance, and oxidation protection, characterized in that... Includes the following steps: S1. Select low-pressure nitrogen operation or high-pressure nitrogen operation according to the usage scenario, and customize the high-temperature start-up (standard 65℃) and low-temperature shutdown temperature control threshold of the chamber. S2. The equipment generates nitrogen intermittently under normal conditions. The nitrogen is stored in a flexible nitrogen storage colloid pressure-stabilizing buffer. The cavity maintains oxygen-free, dry, and inert protection. At the same time, relying on the low thermal conductivity of nitrogen, a stable heat insulation and cold protection layer is formed to resist the intrusion of external low temperature. S3. When the cavity temperature reaches the set high temperature threshold of 65℃, the negative pressure vacuum pump and the corresponding booster gas source start simultaneously, and the rear guide fan starts simultaneously in low pressure conditions. S4. The negative pressure gas path draws high-temperature hot waste gas from the upper part of the cavity, and the low-temperature high-purity nitrogen gas produced by the gas source is supplied from the bottom of the cavity. Together with the cavity guide baffle, a closed-loop convection micro-circulation is formed with cold nitrogen entering from the bottom and hot waste gas exiting from the top, thus completing the self-circulation heat dissipation inside the cavity. S5. Nitrogen continuously provides multiple protections within the cavity, including heat insulation, cooling, temperature control, cold insulation, low-temperature start-up protection, oxygen isolation and oxidation prevention, inhibition of component thermal decay, and prevention of motor magnet demagnetization. It can block external cold air in outdoor low-temperature, high-altitude, and severe winter environments, lock in the equipment's own residual heat, and prevent frost, condensation, and solidification of internal components, ensuring stable start-up and long-term operation of the equipment under low-temperature conditions. S6. When the cavity temperature drops to the set low temperature threshold, all power sources shut down simultaneously, restoring the normal nitrogen storage protection and low temperature insulation inertization mode. S7. Multi-channel linkage of the same machine: Multiple cavities of a single device are independently controlled. The heating of a single channel only executes the heat exchange process separately, while the other branches continuously maintain a balanced protection state against high and low temperatures. S8. Multi-unit parallel operation: Multiple units are supplied with gas through a common gas storage main pipeline. When multiple chambers are heated simultaneously, multiple units work together to produce nitrogen and distribute low-temperature nitrogen evenly, while also taking into account the low-temperature insulation needs of the entire chamber.
8. The method of use according to claim 7, characterized in that: Commercially available air compressors and air pumps can be directly purchased as nitrogen generators as external backup nitrogen sources and connected to the pipeline of this invention. The hardware of the purchased nitrogen generator is existing technology. The process logic of using it in conjunction with the entire architecture of this invention, including negative pressure pretreatment, graded filtration, dual-condition matching, 65℃ overheat chamber internal self-circulation, micro-circulation constant temperature protection, and high and low temperature all-condition cold and freeze protection, is the original creation of this invention.
9. A multi-condition nitrogen generation, storage, and charging equipment and an adaptive constant temperature, heat insulation, cold resistance, and oxidation protection method according to claim 1 or 8, characterized in that: Any changes made to the gas source type, filtration levels, assembly configuration, or nitrogen storage structure, as long as they replicate the dual-isolation synchronous dual-gas path, negative pressure + micro-positive pressure chamber micro-circulation, high and low pressure differentiated auxiliary component matching, 65℃ threshold trigger internal hot and cold self-circulation, nitrogen multi-dimensional constant temperature cold protection and anti-oxidation protection, and multi-path / multi-unit linkage gas supply core mechanical architecture and usage process of this invention, are considered to be within the scope of protection of this invention.