Thermally coupled redundant dual magnetic cooling system device

Abstract

We provide a thermal interconnected redundant dual magnetic cooling system that eliminates the risk of a single point of failure causing a store-wide system shutdown, minimizes the impact on business operations during maintenance, and achieves further energy savings and efficiency. [Solution] The thermal interconnection redundant dual magnetic cooling system consists of two independent magnetic energy systems, a fluid switching valve unit, and an AI central control unit. It achieves "waste heat interconnection recovery" through an "independent and separated heat exchanger." The AI ​​control device automatically switches between normal mode, independent mode, and emergency mutual support mode according to demand, and the overall operation is not affected even if a single failure occurs. Compared to conventional systems, energy consumption is reduced by 35% to 50%, effectively reducing the user's operating costs.

Description

Technical Field

[0001] The present invention relates to a temperature control system using magnetic cooling technology, and is particularly applicable to scenarios such as 24-hour retail stores. It is a dual magnetic refrigeration system device (Figure 1) that can independently control two temperature zones of refrigeration and heat preservation, and has functions of heat recovery replenishment and fault redundancy mutual assistance. It is also related to the technical field of International Patent Classification: F25B 30 / 00. The system of the present invention

[0002] Details of the system structure Configuration of System A (refrigeration system) Magnetic cooling host: Adopt N52 neodymium magnet (magnetic flux density 1.5T), LaFeSi-based magnetocaloric material (filling amount 1.2 kg / layer), and operate an active magnetic regenerative cycle (AMR cycle); Heat exchange circuit: Cold-end heat exchanger (made of aluminum, heat transfer area 1.5 m²), magnetically driven cooling pump (output 60 W, flow rate 8 L / min), 5 μm filter; Control module: Independent PLC (Mitsubishi FX3U series), temperature control accuracy ±0.5 °C, CAN bus communication (communication speed 500 kbps) (Figure 2) (Figure 3).

[0003] Configuration of System B (heat preservation system) Magnetocaloric utilization host: Adopt the same permanent magnet and magnetocaloric material as System A, and operate in heating mode; Heat exchange circuit: High-temperature side heat exchanger (made of 316L stainless steel, heat transfer area 1.2 m²), magnetically driven heating pump (output 500 W, flow rate 6 L / min), 10 μm filter; Control module: Independent PLC (Mitsubishi FX3U series), temperature control accuracy ±0.5 °C, CAN bus communication (communication speed 500 kbps) (Figure 4) (Figure 5).

[0004] Configuration of the intelligent fluid switching valve unit Valve body: 304 stainless steel (corrosion resistance, service temperature range -40 to 120 °C) (Figure 6) (Figure 7); Valve core: Polytetrafluoroethylene (PTFE, chemical resistant, leakage rate ≤ 0.1 mL / min @ 1.0 MPa) (Figure 10); Drive system: Small stepping motor (torque 0.5 N·m, valve core position held when power is lost) (Figure 9), Position feedback: Photoelectric limit switch (accuracy ±0.5°) (Figure 11);

[0005] Configuration of the central control unit Main chip: STM32F407 (low power consumption, multi-function interface) (Figure 15); Sensor interface: 8-channel PT100 temperature sensor, 4-channel pressure sensor, 4-channel flow sensor; Communication modules: CAN bus (communication with system A / B), Ethernet (remote monitoring), 4G / 5G module (alarm notification) (Figure 16); Memory module: Capable of storing 1000 operation records and fault logs.

[0006] Thermal interconnection and fluid isolation design To achieve waste heat recovery between System A and System B, and to completely isolate the two different fluid media (a 50% ethylene glycol aqueous solution in System A and pure water containing a rust inhibitor in System B) to prevent cross-contamination and performance degradation, this utility model integrates a wall-type heat exchanger (Figure 8) inside the intelligent fluid switching valve unit.

[0007] The core of the interwalled heat exchanger: This heat exchanger is made of 316L stainless steel and employs a specially designed plate or coil structure inside to form two mutually independent and physically isolated fluid passages. One passage belongs to the high-temperature circuit of system A, and the other passage belongs to the high-temperature circuit of system B.

[0008] Operating principle: As the fluid passes through this heat exchanger, the waste heat absorbed by the ethylene glycol aqueous solution in the high-temperature circuit of System A is efficiently transferred to the pure water in the high-temperature circuit of System B via the stainless steel interwall. This enables the transfer and recovery of heat, without the two fluids themselves mixing at all.

[0009] Normal mode (waste heat recovery mode) Operation Logic: The AI ​​central control unit detects the status of systems A and B, and if both are normal, it activates this mode. Fluid and heat flow channels (Figure 12): 1. System A's cold end heat exchanger → refrigerated area liquid panel → System A's magnetic refrigeration host (heat absorption from the refrigerated area) 2. The hot-side fluid of System A flows through the passage on the A-side of the interwalled heat exchanger within the intelligent fluid switching valve unit; 3. Simultaneously, the hot-side fluid of system B flows through the B-side passage of the interwall heat exchanger in the intelligent fluid switching valve unit; 4. Inside a wall-type heat exchanger, waste heat from the fluid of system A is transferred to the fluid of system B via the wall, supplying a heat source to system B; 5. Fluid in heated System B → Liquid panel in the heat retention zone → Magnetic refrigeration host in System B (further auxiliary heating); Energy Effect: This indirect heat recovery method allows System B to achieve a COP (Coefficient of Performance) of 3.8 or higher, and the overall energy consumption of the system is reduced by 30-45% compared to the conventional system.

[0010] Independent mode (fault isolation mode) Trigger condition: When the AI ​​central controller detects a fault signal from system A (or B) (e.g., motor overload, pressure anomaly); Fluid path switching (Figure 13): a. The intelligent fluid switching valve unit disconnects the interconnection circuit of system A / B; b. Normal system (e.g., System B) operating independently: Cooling side of System B → Outdoor heat exchanger (heat absorption from the environment) → Magnetic refrigeration host of System B → Insulated zone liquid panel; Reliability effect: The faulty system is isolated, does not affect the operation of the normal system, and maintains basic temperature control functions.

[0011] Emergency mutual support mode (core redundancy mode) Trigger condition: When the AI ​​central controller detects a failure in System A (refrigeration system) Fluid path switching (Figure 14): a. The intelligent fluid switching valve unit switches the liquid circuit of System B to the refrigeration area liquid panel. b. System B magnetic refrigeration host switches to refrigeration mode: System B cold end → refrigerated area liquid panel → System B magnetic refrigeration host → outdoor heat exchanger (heat dissipation); Business safety benefits: Maintains a refrigerated area temperature of ≤9℃ to protect the quality of high-value / temperature-sensitive products; the AI ​​central controller sends an alarm message to the remote server stating "System A failure, emergency mutual support mode activated". [Background technology]

[0012] Problems with conventional technology Conventional magnetic refrigeration systems predominantly utilize a "single-core dual-purpose" integrated design, simultaneously controlling two temperature zones—refrigeration and heating—with a single magnetic refrigeration unit. However, this design has the following problems: System-wide shutdown due to a single fault: If any component in the system (such as the compressor or control circuit) fails, the refrigeration and heating functions will stop simultaneously, causing deterioration of product quality and resulting in losses. Energy efficiency constraints: Because a single system must meet the requirements of different temperature ranges, optimizing operating parameters is difficult, resulting in a low coefficient of performance (COP). Impact on maintenance: Maintenance requires shutting down the entire system, which will disrupt store operations. Limitations of heat recovery: The heat recovery paths in the integrated system are fixed and cannot be flexibly adjusted in response to load changes. For example, in the Japanese retail industry, such as convenience stores that operate 24 hours a day, there are extremely high demands for system reliability and energy efficiency, and there is an urgent need for new system devices that can solve the above problems.

Summary of the Invention

Problems to be Solved by the Invention

[0013] a. Eliminate the risk of system shutdown for the entire store due to a single fault point. b. Achieve specialized control for each temperature zone of refrigeration and heat preservation, and improve energy efficiency. c. Minimize the impact on business during maintenance. d. Flexibly control the heat recovery function to achieve further energy savings and efficiency improvement.

[0014] Solution The present invention provides a thermally interconnected redundant dual magnetic refrigeration system, which is an integrated device composed of two completely independent magnetic refrigeration systems (System A: for refrigeration, System B: for heat preservation), an intelligent fluid switching valve unit, and an AI central control device: System A (refrigeration system): Equipped with an independent magnetic refrigeration host (refrigeration capacity 600W), a low-temperature heat exchange circuit (50% ethylene glycol aqueous solution), and an independent PLC control module, and provides services to refrigerated containers at 1 - 8°C. System B (heat preservation system): Equipped with an independent magnetic refrigeration host (heating capacity 500W), a high-temperature heat exchange circuit (pure water with rust inhibitor), and an independent PLC control module, and is suitable for heat preservation containers at 45 - 65°C. Intelligent fluid switching valve unit: Composed of two three-way two-position valves + one four-way two-position valve, and controls the switching of the fluid circuit. The material is 304 stainless steel (valve body) + polytetrafluoroethylene (PTFE, valve core). Nominal diameter: main circuit DN20, branch circuit DN15. Response time ≤ 2 seconds. AI central control device: Centered on the STM32F407 microcontroller, collects data from temperature and pressure sensors (PT100 temperature sensor: accuracy ±0.1°C, 0 - 1.6MPa pressure sensor), and automatically switches among three operating modes (normal mode, independent mode, emergency mutual support mode).

Effects of the Invention

[0015] Examples of applications (specific application scenarios): High reliability: Failure of a single system does not affect other systems, ensuring the continuous operation of a 24-hour retail store; High energy efficiency: The waste heat recovery function in normal mode achieves a system-wide COP of 3.5 or higher, exceeding the Japanese Energy Efficiency Standard (JIS C 9600); Ease of maintenance: Only faulty systems need to be maintained, while healthy systems can continue operating, reducing store operating losses. Operational flexibility: Three operating modes automatically switch according to load changes (such as the difference in temperature demand between day and night), meeting the demands of various scenarios; Safety alarm function: In the event of a malfunction, AI automatically issues a remote alarm, improving maintenance response speed and reducing downtime. The system's daily power consumption is approximately 3.6 kWh (3.6 degrees Celsius). This may vary slightly depending on specific usage conditions, ambient temperature fluctuations, and the equipment's adjustment capabilities, but the upper limit is 4.0 kWh / day.

[0016] Examples of applications of this invention: Applicable environment: 24-hour convenience stores in Tokyo (approximately 120m 2 Summer outdoor temperature 30-35℃, winter outdoor temperature 2-8℃. Refrigerated area (beverages / fresh food) required temperature 4-8℃, warming area (hot drinks / hot food) required temperature 45-65℃. System Configuration: The thermally linked redundant dual magnetic refrigeration system device of this utility model is installed: System A: Cooling capacity 600W, System B: Heating capacity 500W, 304 stainless steel intelligent fluid switching valve unit, AI central control unit with STM32F407 chip, aluminum refrigerated liquid tank panel (area 5m²) 2 ), stainless steel insulated liquid tank panel (area 5m 2 ). Driving data (Summer normal mode): System A power consumption: average 180W, refrigerated area temperature stable at 6±0.5℃; System B power consumption: average 80W (utilizing waste heat from System A), temperature stable at 47±0.8℃ in the warming zone; Overall system COP: 3.7, 18% reduction in energy consumption compared to a conventional single system (COP 2.2); Valve switching response time: 1.5 seconds, fluid leakage rate: 0.05 mL / min @ 1.0 MPa (meets design criteria).

[0017] Failure Simulation 1 (System B Failure, 11:00 AM): AI central controller failure detection time: 2 seconds (abnormal flow rate detection by pressure sensor); AI Central Controller Detection: System B Failure, Status: Refrigeration Zone Temperature 6±1℃, Warming Zone Load Temperature 48℃±1℃, "Emergency Mutual Support Mode" Activated; Mode switching: Automatically switches to "independent operation mode," and the intelligent fluid switching valve unit isolates the system A / B circuits; Operating record: System A operates independently (power consumption 220W, heat absorption from the environment), maintaining a temperature of 48±1℃ in the heating zone; Effectiveness of the emergency mutual support mode: The temperature in the refrigerated area temporarily rose slightly, not exceeding ±1°C (no product deterioration); the temperature in the warming area was maintained at 46°C (no impact on food quality). Maintenance personnel arrived on-site within six hours and repaired the problem. (Experimental data: When B fails, the temperature in the heating zone can be maintained at 46°C ± 1°C for 48 hours, and at ± 2°C for 72 hours.)

[0018] Emergency Simulation 2 (System A Failure, Nighttime 23:00): AI Central Control Unit's assessment: System A failure, status: Refrigeration zone temperature 6±1℃, warming zone load temperature 48℃±1℃, "Emergency Mutual Support Mode" activated; Operation details: The intelligent fluid switching valve unit switches System B circuit to the refrigeration zone, and System B switches to freezing mode (power consumption 220W); Operation log: The temperature in the warming area gradually rose to 49°C (no impact on the quality of the bento box products); the AI ​​sent an alarm to the maintenance center via the 5G module (content: "System A pump failure, emergency mutual support mode activated, refrigeration function maintained normal, warming temperature gradually rising"). Effectiveness of the emergency mutual support mode: Maintains a refrigerated area temperature of 6±1℃; Maintenance personnel arrived on site 12 hours later and repaired the problem. (Experimental data: When malfunction A occurs, the refrigerated area temperature can be maintained at 9°C ± 1°C for 48 hours, and at ± 2°C for 72 hours.)

[0019] Technological effects The main effects of this invention are as follows: Highly reliable operation: Even if one magnetic refrigeration system fails, the other can take over and avoid a complete shutdown; High-efficiency energy reuse: Waste heat from the cooling side is transferred to the heating side, reducing energy consumption by 30% to 45%; Flexible operation switching: AI automatically selects the optimal mode based on day / night load and seasonal changes; Improved maintainability: Independent operation of each system allows maintenance work to be performed by stopping only one side. [Brief explanation of the drawing]

[0020] [Figure 1] System configuration diagram, exhibit contents: Shows the connection relationships between System A (refrigeration), System B (heating), intelligent fluid switching valve unit, AI central control unit, and refrigeration / heating zone liquid panel. Clearly indicates the location of the core components of each system (magnetic refrigeration host, pump, heat exchanger). [Figure 2] Exhibit contents: Shows the core configuration of a 600W magnetically cooled host system. [Figure 3] Exhibit contents: Magnetic Maturation Circulation Core (AMR Cycle) [Figure 4] Exhibit contents: The core configuration of a 500W magnetothermal host system will be shown. [Figure 5] Exhibit contents: The configuration of a 500W magnetic thermal energy utilization system will be shown. [Figure 6] Exhibit contents: The exhibit will show a detailed external view and system core functional configuration of the intelligent fluid switching valve unit. [Figure 7] Exhibit contents: Detailed engineering design drawings and specific design details of the system core configuration of the intelligent fluid switching valve unit will be shown. [Figure 8]Exhibit contents: The exhibit shows two completely separate fluid passages formed inside a wall-type heat exchanger. One passage is connected in series to the waste heat fluid circuit of system A, and the other passage is connected in series to the heat retention fluid circuit of system B, enabling waste heat transfer from system A to system B via the heat exchanger wall. [Figure 9] Exhibit contents: This exhibit showcases the stepping motor design and core functional configuration of the operating system for a smart fluid switching valve unit. [Figure 10] Exhibit contents: Displays explanations regarding the nominal diameter parameters and valve body material of the smart fluid switching valve unit. [Figure 11] Exhibit contents: Shows parameters such as pressure resistance and temperature resistance of the valve body of the smart fluid switching valve unit. [Figure 12] Exhibit contents: Fluid path in normal operating mode. Thick lines clearly indicate the direction of fluid flow in normal mode. In particular, the path through which waste heat from system A is transferred to the intelligent fluid switching valve unit system, undergoes heat exchange in the plate heat exchanger, and is then sent to system B is highlighted. [Figure 13] Exhibit contents: Fluid path diagram in A / B independent operation mode. Example setting scenario: When a failure occurs in system A, the intelligent fluid switching valve unit changes the fluid path. Clearly displays the separation state of systems A and B and the independent operation path of system B. [Figure 14] Exhibit contents: Operating status of the equipment in emergency mutual support mode and the path status of the fluid when it transitions to mutual support mode. When System A fails, the AI ​​central control unit sends a command to the intelligent fluid switching valve system: executing the path process for emergency mutual support mode. Particular emphasis is placed on the fluid path when System B circuit switches to emergency mutual support mode in the refrigerated area. [Figure 15] Exhibit contents: The components of the AI ​​central control unit will be displayed, clearly illustrating the functions of the STM32F407 chip, the connection relationships between the sensor interface and communication module, and the specifications of the input and output terminals. [Figure 16] Exhibit content: Demonstrates that the operating logic of the intelligent fluid switching valve unit is the system core. [Modes for carrying out the invention]

[0021] Selection criteria for magnetic thermal materials The main reasons for adopting LaFeSi-based magnetic thermal materials instead of conventional Gd-based materials in this system are as follows: 1. Cost Advantage: LaFeSi-based materials do not contain the rare earth element Gd, resulting in raw material costs that are more than 40% lower than those of Gd-based materials, making them suitable for commercial mass production; (Note 1) 2. Performance Suitability: LaFeSi-based materials achieve a peak magnetothermal effect (MCE) of 15 J / (kg·K) in the 20-60°C temperature range, making them highly suitable for the refrigeration (2-9°C) and heating (45-65°C) operating temperature ranges of this system; 3. Equipment stability: After 1000 thermal cycle tests, the magnetic thermal performance decay rate of the LaFeSi-based material was ≤3%, and the experimental data and equipment can be used for more than 15 years (meeting the lifespan requirement of more than 5 years for commercial equipment) (Note 2).

[0022] Intelligent valve unit switching reliability guarantee To avoid system disruption due to valve unit switching failures, a double warranty system is in place: Hardware redundancy: Three-way and four-way valves incorporate dual-coil drive (main coil + backup coil). In the event of a main coil failure, the AI ​​controller automatically switches to backup coil drive, with a switching response time of ≤0.5 seconds. Software Verification: After valve group switching, the AI ​​controller compares the position signal from the photoelectric limit switch with a preset position. If the deviation of the average value of multiple points exceeds ±1.5°, the "Retry-Alarm" process is immediately activated: First, the switching operation is retried (up to 3 times, with 30-second intervals between each attempt). If it still fails, it switches to independent mode and sends an emergency alarm to the maintenance center indicating a "valve group switching failure."

[0023] Temperature safety limits for emergency mutual support mode In emergency mutual support mode, System B switches to cooling mode and supplies cold air to the refrigerated area, while simultaneously allowing a gradual rise in temperature in the warming area. The criteria for setting the safety boundary are as follows: Maximum temperature for the warming zone: The emergency mode limit for the warming zone of typical warming products (hot drinks) in Japanese convenience stores is set to 55°C (Note 3). Refrigerated Zone Lower Limit Temperature: To avoid energy waste due to temperature drops in the refrigerated zone, the target temperature for the refrigerated zone in emergency mode is set to 4-8°C (same as normal mode), and unlimited cooling is not performed. Through real-time monitoring by the PT100 sensor, the cooling output of control system B is controlled to ensure that temperature fluctuations do not exceed ±1°C (Note 4).

[0024] Ensuring isolation and thermal communication of the fluid medium To ensure that the two different fluid media, System A (ethylene glycol aqueous solution) and System B (pure water), are completely isolated during thermal communication, this invention employs the following guarantee design: Physical Isolation Structure: One of the core innovations of the intelligent fluid switching valve unit is the integration of an inter-wall heat exchanger. This heat exchanger ensures airtightness of the passages using laser welding technology and achieves a pressure resistance of ≥2.0 MPa. Physically, it completely eliminates the possibility of the two media mixing. Material compatibility: The interwall heat exchanger uses 316L stainless steel, which has excellent corrosion resistance to both the ethylene glycol aqueous solution in System A and the rust inhibitor-containing pure water in System B, ensuring reliability for long-term operation. System maintainability: This design allows for independent draining, refilling, and replacement of the fluid medium in each circuit during maintenance of System A and System B, without mutual interference, significantly improving maintenance convenience.

[0025] Explanation of the differences between this invention and other technologies Differences in technical fields This invention relates to a temperature control system employing magnetic refrigeration technology, and more particularly to a redundant thermal interconnect structure that controls a refrigerated area and a heated area using separate magnetic refrigeration devices, enabling heat recovery and sharing between the two.

[0026] The mainstream structure of existing magnetic refrigeration systems is as follows: Single-core dual-temperature structure: A single-system control mode in which a single magnetic refrigeration unit simultaneously controls both cooling and heating. The refrigerant fluid and heat exchange path employ a single structure, meaning that a failure in any component will lead to the shutdown of the entire system. Fixed heat recovery path: The heat recovery path is fixed and cannot be flexibly switched in response to load changes. These conventional technologies have the following unavoidable problems: System-wide shutdown due to a single point of failure; A decrease in energy efficiency in both refrigeration and heating applications; A forced shutdown is required during maintenance.

[0027] To solve the above problems, this utility model adopts the following technical structure: Dual independent magnetic refrigeration systems (Systems A and B) a. System A: For refrigeration (2-9°C). Equipped with an independent magnetic refrigeration host, low-temperature heat exchange circuit, and dedicated PLC control. b. System B: For temperature retention (45~65°C). Equipped with an independent magnetic refrigeration host, high-temperature heat exchange circuit, and dedicated PLC control.

[0028] Intelligent fluid switching valve unit (AI controlled) c. Composed of three-way two-position valves and four-way two-position valves, with an AI controller automatically switching the fluid path; The valve body is made of 304 stainless steel, and the valve core is made of PTFE (polytetrafluoroethylene), with a response time of less than 2 seconds.

[0029] Integrated wall heat exchanger structure d. An inter-wall heat exchanger is integrated into the fluid switching valve unit to completely prevent fluid mixing between systems A and B, ensuring only heat transfer; e. Adopts a 316L stainless steel plate structure.

[0030] Three driving modes controlled by the AI ​​central controller f. Normal mode (waste heat recovery operation); g. Independent mode (fault isolation operation); h. Emergency mutual support mode (redundant operation); i. Each mode is automatically switched based on signals from the temperature and pressure sensors.

[0031] Summary of the differences between this invention and the prior art TIFF0003256100000002.tif6881

[0032] Industrial applicability of the present invention This invention, as a highly reliable and efficient temperature control system, can be effectively applied to various settings such as 24-hour convenience stores, food factories, refrigerated and frozen warehouses, and experimental equipment. By replacing existing single-magnetic refrigeration systems, this system offers superior benefits in terms of both energy savings and operational stability.

[0033] Summary of this invention This utility model is the first to integrate three elements: "dual independent structure + thermal linkage + redundant AI control". This technology fundamentally solves the problems inherent in existing technologies, such as a single point of failure, low heat recovery efficiency, and the risk of operational downtime. Its structural features (integrated interwall heat exchanger within the valve unit) possess novelty and inventiveness not found in existing technologies.

[0034] This invention is not limited to the embodiments described above, and various modifications are possible within the scope of the technical ideas described in claims 1 to 8. Additional explanation 1. A thermally connected redundant dual magnetic cooling system (300W + 250W device) applying this technology to a vending machine is protected by independent claims (divisional application). 2. A thermally connected redundant dual magnetic cooling system (1600W + 1400W device) applying this technology to a residential building is protected by independent claims (divisional application). Cited materials (Note 1): Journal / Publication name: Journal of Materials Processing Technology Paper Title: Selective laser melting of La (Fe, Co, Si)₁₃ geometries for magnetic refrigeration Publication Date: 2013 · Research Team: SD Moore et al., US team, affiliated with ORNL (Oak Ridge National Laboratory) Source: Analysis of base magnetothermal materials <Circulation durability and thermal performance results> (Note 2): Journal / Publication name: International Journal of Refrigeration / Revue Internationale du Froid Paper Title: Analysis of LaFeSi-based magnetothermal materials: Cycle durability and thermal performance results Publication date: April 2021 (Volume 124, Pages 43-51) Research team: S. Lionte et al. (European research team) (Note 3): The temperature setting for hot beverage warmers in convenience stores such as 7-ELEVEN, Lawson, and FamilyMart is generally set to 48°C. (Note 4): The temperature setting for refrigerated cases in convenience stores such as 7-ELEVEN, Lawson, and FamilyMart is usually 6°C.

Claims

1. A magnetic cooling system device applicable to a temperature control device having a refrigeration zone and a warming zone, System A (refrigeration system): Equipped with an independent magnetic cooling host, a low-temperature heat exchange circuit, and an independent first PLC control module, it is used to control the temperature of the refrigerated zone to 2-9°C. System device B (heating system): Equipped with an independent magnetic thermal host, a high-temperature heat exchange circuit, and an independent second PLC control module, it is used to control the temperature of the heating zone to 45-65°C. Intelligent fluid switching valve unit: Arranged to switch the connection state of the fluid circuit between system device A and system device B, AI Central Control Unit: Centered around a microcontroller, it collects data from temperature and pressure sensors and controls the operation of System Unit A, System Unit B, and the Intelligent Fluid Switching Valve Unit. A thermal interconnection redundant dual magnetic cooling system device characterized by the above.

2. A thermal interconnection redundant dual magnetic cooling system device according to claim 1, The intelligent fluid switching valve unit incorporates a partition-type heat exchanger, enabling heat exchange while keeping the fluid isolated between system device A and system device B, and is characterized by this heat interconnection redundant dual magnetic cooling system device.

3. A thermal interconnection redundant dual magnetic cooling system device according to claim 2, The aforementioned partition-type heat exchanger is characterized by being made of 316L stainless steel, and is a thermal interconnection redundant dual magnetic cooling system device.

4. A thermal interconnection redundant dual magnetic cooling system device according to any one of claims 1 to 3, wherein the intelligent fluid switching valve unit includes a three-way two-position valve and a four-way two-position valve.

5. A thermal interconnection redundant dual magnetic cooling system device according to any one of claims 1 to 4, The magnetic cooling host of the aforementioned system device A employs an N52 neodymium iron boron permanent magnet (magnetic flux density 1.5T) and a LaFeSi-based magnetothermal material (filling amount 1.2kg / layer), and is characterized by operating in an active magnetic regeneration (AMR) cycle. This is a thermal interconnection redundant dual magnetic cooling system device.

6. A thermal interconnection redundant dual magnetic cooling system device according to claim 5, The magnetic thermal utilization host of the aforementioned system device B employs the same permanent magnets and magnetic thermal materials as the aforementioned system device A, and is characterized by operating in heating mode.

7. A thermal interconnection redundant dual magnetic cooling system device according to any one of claims 1 to 6, The aforementioned AI central control unit is characterized by a thermal interconnection redundant dual magnetic cooling system device, centered on an STM32F407 microcontroller, connected to 8 channels of PT100 temperature sensors (accuracy ±0.1℃), 4 channels of 0-1.6MPa pressure sensors, and 4 channels of flow sensors, and communicating via CAN bus, Ethernet, and 4G / 5G modules.

8. A thermal interconnection redundant dual magnetic cooling system apparatus according to any one of claims 1 to 7, wherein the AI ​​central control unit has three operating modes and is automatically switchable. Normal mode (waste heat recovery mode): When both system device A and system device B are functioning normally, the intelligent fluid switching valve unit is controlled to transfer the waste heat generated by system device A to system device B. Independent mode (fault isolation mode): If either system device A or system device B fails, the intelligent fluid switching valve unit is controlled to isolate the circuit of the failed system device, allowing the normal system device to operate independently. Emergency mutual assistance mode (core redundancy mode): When system device A fails and the heat load of the heating zone is low, the intelligent fluid switching valve unit is controlled to switch the circuit of system device B to the refrigeration zone, and system device B is operated in cooling mode to provide cooling support to the refrigeration zone. A thermal interconnection redundant dual magnetic cooling system device characterized by the above.

Images