Intelligent space temperature control device integrating phase-change cooling and wireless magnetic wave heating

Abstract

This invention provides an intelligent space temperature control device integrating phase change refrigeration and wireless magnetic wave heating. It includes a reaction zone containing potassium nitrate and a water injection section for injecting water to initiate an endothermic reaction. A filter membrane is positioned above the reaction zone, forming a first space between the reaction zone and the filter membrane as a gas expansion zone. Above the filter membrane is a second space for collecting water vapor and condensing it back to the reaction zone, forming a closed-loop cycle. This structure is housed within a sealed space and equipped with a magnetic wave heating module located outside the reaction zone, using an alternating magnetic field to dehydrate and reduce potassium nitrate. An energy-conducting interface is also provided to export the cold or heat energy generated within the reaction zone, achieving efficient, refrigerant-free intelligent temperature control. This device is suitable for applications such as building air conditioning, vehicle-mounted, and outdoor temperature control.

Description

Technical Field

[0001] This invention relates to an intelligent space temperature control technology, specifically an intelligent space temperature control device that combines phase change refrigeration reaction and wireless magnetic wave heating reduction technology. It achieves a cooling effect through the endothermic dissolution reaction of potassium nitrate and water, and uses magnetic induction heating to dehydrate and reduce potassium nitrate, realizing closed-loop operation. It is suitable for small building air conditioning, vehicle auxiliary cooling, outdoor low-power environment regulation and other fields, and belongs to the technical field of energy-saving and environmentally friendly green temperature control devices. Prior Technology

[0002] Traditional space temperature control technologies primarily rely on compressor-type air conditioners, Peltier semiconductor refrigeration systems, and water-cooled circuit systems to control environmental temperature. Among these, compressor-type air conditioners are currently the most widely used technology on the market. They achieve the purpose of removing indoor heat and supplying cool air through the process of refrigerant compression, expansion, and heat exchange. However, these systems not only have disadvantages such as high energy consumption, high noise, and large size, but also pose potential environmental pollution and regulatory restrictions due to the use of refrigerants such as Freon. Especially with the global push towards carbon neutrality, their use is becoming increasingly restricted.

[0003] Peltier cooling modules utilize the thermoelectric effect to regulate the temperature difference between the two sides, offering advantages such as miniaturization and the absence of mechanical transmission components, making them suitable for temperature control applications in small spaces. However, Peltier systems generally have a low Coefficient of Performance (COP), requiring higher power consumption for extended operation. Furthermore, the lack of an efficient heat dissipation mechanism at the hot end can significantly reduce overall cooling capacity. Therefore, practical applications are limited to localized or short-term use, such as cooling electronic devices or beverages in vehicles.

[0004] Another type of water-cooled air conditioning system uses circulating water to exchange heat inside a heat exchanger or radiator, which can improve cooling efficiency through a higher specific heat capacity. Although this technology is common in large buildings and data centers, the system requires the integration of cooling towers and pumps, making it bulky, costly to install, and unable to operate as a standalone unit. It is not suitable for off-grid, micro, or low-power applications.

[0005] In recent years, some technologies have proposed non-compressible cooling using absorption or chemical thermal storage reactions, such as using endothermic dissolution of salts (e.g., ammonium nitrate, potassium nitrate) to achieve low-temperature cooling. However, traditional systems often cannot achieve repeated reduction and reuse of reaction materials, requiring replacement or replenishment of reactants, which limits their feasibility in enclosed spaces and continuous use. Furthermore, if such reaction systems use resistance heating for reduction, there are still risks associated with wiring and contact heating, making them unsuitable for operation in confined or humid environments.

[0006] Other research has developed non-contact heating using magnetic induction or microwave methods to improve overall thermal efficiency and operational safety. However, these technologies are mostly applied to cooking, heaters, and chemical reaction modules, and have not yet been integrated into reversible reaction refrigeration systems to achieve space temperature control applications with material circulation and energy closed loop.

[0007] Therefore, there is currently a lack of intelligent space temperature control devices that possess a simple structural module, require no refrigerant, can achieve endothermic reaction cooling and material reduction capabilities, and can complete closed-loop operation through wireless heating. Combining a single reaction tank structure with a filter membrane flow control design, and integrating magnetic wave heating technology with an energy-conducting interface for heat transfer, would help achieve a highly efficient, environmentally friendly, and innovative temperature control solution suitable for micro / off-grid environments. This would also fill the application gap in existing technologies, possessing high practicality and industrial promotion potential. Summary of the Invention

[0008] To address the aforementioned problems, this invention proposes an intelligent space temperature control device integrating phase change refrigeration and wireless magnetic wave heating. The device is characterized by comprising: a reaction zone containing potassium nitrate, and a water injection section above the reaction zone for injecting water into the reaction zone;

[0009] A filter membrane is positioned above the reaction zone; a first space is formed between the reaction zone and the filter membrane as a gas expansion area; a second space is positioned above the filter membrane to collect water vapor rising from the reaction zone and condense it before it flows back into the reaction zone along the filter membrane, thus completing water circulation; wherein the reaction zone, filter membrane, first space, and second space are all located within a sealed space; a magnetic wave heating module is positioned outside the reaction zone and includes at least one magnetic field generating element and a heating material to provide an alternating magnetic field, causing potassium nitrate in the reaction zone to be heated and dehydrated, thereby switching to a standby or cooling state; an energy-conducting interface is positioned on the outer surface of the reaction zone and is configured to conduct the cold or heat energy generated in the reaction zone to the external space for space temperature regulation.

[0010] The intelligent space temperature control device integrating phase change refrigeration and wireless magnetic wave heating further includes a control module connected to the reaction zone and the magnetic wave heating module, which automatically controls the start-up and switching of the water injection section and the magnetic wave heating module (to complete the cycle of cooling and reduction) based on the saturation state of the potassium nitrate solution in the reaction zone or the externally sensed temperature.

[0011] The intelligent space temperature control device integrating phase change refrigeration and wireless magnetic wave heating further includes an airflow output unit located in the vicinity of the energy-conducting interface to promote the output of air to the external space after it is cooled by the energy-conducting interface (in order to achieve thermal convection).

[0012] The intelligent space temperature control device integrating phase change refrigeration and wireless magnetic wave heating, as described above, uses a polytetrafluoroethylene nanofiber membrane with a pore size ranging from 0.05 μm to 0.2 μm to allow water molecules to pass through and block the reverse escape of potassium nitrate particles or crystals.

[0013] The intelligent space temperature control device integrating phase change refrigeration and wireless magnetic wave heating, as described above, wherein the magnetic wave heating module operates in the frequency range of 100 kHz to 300 kHz and transfers energy to the reaction zone for heating through near-field magnetic induction.

[0014] The intelligent space temperature control device integrating phase change refrigeration and wireless magnetic wave heating, as described above, includes a metal thermally conductive plate or graphene heating / heat dissipation film in the energy-conducting interface, which is connected to a fan structure to improve the efficiency of heat and cold energy transfer (for rapid cooling or heating of small spaces).

[0015] The intelligent space temperature control device integrating phase change refrigeration and wireless magnetic wave heating, as described above, includes a temperature sensor and a conductivity sensor in its control module, which are used to simultaneously monitor the external space temperature and the solution concentration in the reaction zone to determine the timing of switching between refrigeration and reduction modes.

[0016] As described in the intelligent space temperature control device that integrates phase change refrigeration and wireless magnetic wave heating, the reaction zone is a corrosion-resistant metal structure made of stainless steel SUS316 or its ceramic coating composite structure to resist chemical corrosion from high-concentration potassium nitrate solution.

[0017] As described in the intelligent space temperature control device that integrates phase change refrigeration and wireless magnetic wave heating, the magnetic field generating element included in the magnetic wave heating module is made of manganese zinc ferrite material with a permeability greater than 5000, so as to improve the magnetic induction heating efficiency.

[0018] The intelligent space temperature control device that integrates phase change cooling and wireless magnetic wave heating further includes a solar power unit and a lithium battery module, providing energy for the control module and the magnetic wave heating module, and supporting off-grid operation or emergency backup power supply.

[0019] The technical features and advantages of this invention will be set forth in the specification and will be apparent in part from the specification, or may be learned by practicing the invention. The objects and other effects of this invention are realized and obtained from the structures disclosed in the specification, the claims, and the drawings.

[0020] To make the above-mentioned objectives, features and effects of the present invention more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Simple Explanation of the Diagram

[0021] Figure 1 illustrates a schematic diagram of the intelligent space temperature control device integrating phase change refrigeration and wireless magnetic wave heating according to the present invention; Figure 2 illustrates a schematic diagram of an intelligent space temperature control device that integrates phase change refrigeration and wireless magnetic wave heating according to the present invention. Implementation

[0022] The embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0023] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing the invention and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. Furthermore, features specified as "first" or "second" may explicitly or implicitly include one or more of those features. In the description of this invention, unless otherwise stated, "plural" means two or more.

[0024] In the description of this invention, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "assembly" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to connections within two components. Those skilled in the art can understand the specific meanings of the above terms in this invention based on the specific circumstances.

[0025] First, please refer to Figure 1. This invention provides a schematic diagram of an intelligent space temperature control device 100 that integrates phase change refrigeration and wireless magnetic wave heating. It generates a cooling effect through an endothermic reaction between potassium nitrate and water, and then dehydrates and reduces the potassium nitrate through a magnetic wave heating module, thus completing the recycling of potassium nitrate. This device is suitable for temperature regulation in small, enclosed spaces, and is particularly suitable for energy-saving applications without compressors or refrigerants, offering advantages such as modularity, low power consumption, and high environmental friendliness.

[0026] The intelligent space temperature control device 100 integrating phase change refrigeration and wireless magnetic wave heating includes a reaction zone 11, which is pre-filled with potassium nitrate as a reversible phase change reaction material. When water is injected through the water injection section 111, it will undergo an endothermic dissolution reaction with potassium nitrate, thereby lowering the temperature of the reaction zone 11. The cold energy is then transferred to the external space through the energy-conducting interface 30 to achieve a cooling effect.

[0027] A filter membrane 12 is disposed above the reaction zone 11, which is used to regulate the flow path of vapor and condensate. Specifically, a second space 14 is disposed above the filter membrane 12 to collect water vapor that rises from the reaction zone 11 and flows back into the reaction zone 11 along the surface of the filter membrane 12 after condensation. This constitutes a closed water circulation system, effectively reducing water loss and ensuring the stability and continuity of the potassium nitrate reaction. In a specific embodiment, the filter membrane is a polytetrafluoroethylene (PTFE) nanometer membrane with a pore size ranging from 0.05 μm to 0.2 μm, which is sufficient to allow water vapor molecules to pass through and effectively prevent potassium nitrate crystals or particles from escaping into the second space 14, thereby improving the material sealing and circulation efficiency of the system.

[0028] A first space 13 is provided between the filter membrane 12 and the reaction zone 11. The first space 13 is the gas expansion area required for vapor rise and pressure release, which can avoid local pressure concentration of vapor during the reaction process, thereby improving the safety and efficiency of the overall system.

[0029] As shown in Figure 1, the reaction zone 11, filter membrane 12, first space 13 and second space 14 together constitute a closed system set in a sealed space 10. The sealed space 10 has the function of managing the circulation of hot air and water vapor, and can prevent external pollutants from entering the system.

[0030] The present invention further includes a magnetic wave heating module 20, disposed outside the reaction zone 11. The magnetic wave heating module 20 includes at least one magnetic field generating element and a heating material, which can generate an alternating magnetic field to heat the potassium nitrate inside the reaction zone 11 in a non-contact manner. In a preferred embodiment, the operating frequency of the magnetic wave module is designed in the range of 100 kHz to 300 kHz, which belongs to the field of high-frequency magnetic induction heating, which helps to improve energy conversion efficiency and reduce heating delay time. When the potassium nitrate absorbs water and reaches saturation, the magnetic wave heating module 20 is activated, causing it to be heated and dehydrated, restoring it to a solid crystalline state, thus completing the reduction and regeneration process.

[0031] To achieve heat exchange, the device further includes an energy-conducting interface 30, which is located on the outer surface of the reaction zone 11. The energy-conducting interface 30 can be made of a material with high thermal conductivity, such as a metal plate or graphene film, and can be used in conjunction with an external fan or airflow output device to effectively conduct cold or hot energy to the external space, thereby achieving the effect of space temperature regulation.

[0032] Referring to Figure 2, in one embodiment of the present invention, the intelligent space temperature control device 100 integrating phase change refrigeration and wireless magnetic wave heating further includes a control module 40, which can be electrically connected or wirelessly controlled to the water injection unit 111 and the magnetic wave heating module 20, and communicates with the sensing element inside the reaction zone 11. The control module 40 includes a temperature sensor and a conductivity sensor. The temperature sensor is set on the inner wall of the sealed space 10 or near the external air exchange area to monitor the ambient temperature in real time. The conductivity sensor is set at the bottom of the reaction zone 11 and immersed in the solution to monitor the saturation level of potassium nitrate through changes in conductivity, serving as the basis for controlling the switching between refrigeration and reduction.

[0033] Furthermore, the control module 40 can preset control parameters. For example, when the external temperature exceeds 30°C, it triggers the water injection section 111 to perform a cooling cycle; or when the conductivity is higher than a preset threshold (corresponding to potassium nitrate concentration approaching saturation), it activates the magnetic wave heating module 20 to perform a dehydration reduction process to restore the heat absorption capacity for the next cooling cycle. The control module 40 can also implement pulse width modulation (PWM) to control the magnetic field strength, or adjust the heating and cooling conversion frequency through a timing switch. It can also be equipped with control logic with AI algorithms to automatically adjust the operation strategy based on historical environmental conditions and heating and cooling requirements, further improving energy efficiency and adaptability.

[0034] It should be noted that, since potassium nitrate has a solubility curve in water, it has a relatively high saturation concentration at room temperature (approximately 38 g / 100 mL). Therefore, when determining whether the cooling cycle is effective, the control module 40 can also assess the rate of temperature change and duration within the reaction zone 11. When the cooling rate decreases significantly or fails to reach the preset temperature drop, the control module 40 can determine that potassium nitrate is saturated or the crystal conversion efficiency has decreased. It then stops the operation of the water injection section 111 and activates the magnetic wave heating module 20 to perform dehydration and reduction, restoring the reaction zone to an unsaturated state to facilitate subsequent endothermic reactions. This achieves a closed-loop control system for the thermal cycle. In one embodiment, the magnetic field generating element in the magnetic wave heating module 20 uses a manganese-zinc ferrite material with a permeability greater than 5000, which has high-frequency stability and low magnetic loss characteristics, effectively improving the magnetic induction heating efficiency and system lifespan.

[0035] In one specific embodiment, as shown in the figure, an airflow output unit 50, such as a fan or a miniature blower, can be further set in the vicinity of the energy-conducting interface 30 to actively guide the air cooled by the energy-conducting interface 30 to the external space. This configuration helps to accelerate heat exchange efficiency and is particularly suitable for achieving rapid temperature control in enclosed environments such as small vehicle cabins, smart spaces, or temporary tents in disaster areas.

[0036] In a preferred embodiment, the filter membrane 12 is a polytetrafluoroethylene (PTFE) nano-filter membrane with a pore size ranging from approximately 0.05 μm to 0.2 μm. This nano-filter membrane can effectively block potassium nitrate crystals or particles from flowing back into the second space 14, while allowing condensate molecules to pass through quickly and be reinjected into the reaction zone 11, which helps to improve the overall circulation efficiency and water resource reuse rate.

[0037] In one specific configuration, the magnetic wave heating module 20 can be designed to operate at a frequency between 100 kHz and 300 kHz. This frequency range falls within the high-frequency induction heating field and is suitable for non-contact heating of potassium nitrate in the reaction zone 11 via near-field magnetic induction, which can reduce electromagnetic wave loss and improve heating efficiency.

[0038] The energy-conducting interface 30 can be made of highly thermally conductive materials, such as aluminum alloy plates, silver-plated copper plates, or graphene films. It can also combine heating and heat dissipation functions and be used in conjunction with the airflow output unit 50. This design allows the device to provide a stable heating source through the energy-conducting interface when the reaction zone is in the reduction stage, in addition to providing a cooling function, so that the whole system has both heating and cooling functions.

[0039] In addition to determining the temperature of the external space and the status of the reaction zone 11, the control module 40 can also be equipped with a temperature sensor and a conductivity sensor for more accurate parameter monitoring. The conductivity sensor can reflect the concentration change of the potassium nitrate solution. When the conductivity reaches a preset threshold, the control module triggers the reduction mode switching logic; the temperature sensor can ensure that the space temperature is maintained within a comfortable or set range.

[0040] The control module 40 presets a conductivity threshold and a temperature change rate threshold. When either condition is triggered, the magnetic wave heating module is activated. In one specific embodiment, the control module 40 incorporates a "dual-threshold dynamic switching model" for the conductivity threshold or temperature change rate threshold as described above. Its activation conditions include both of the following:

[0041] 1. When the external temperature sensor detects that the ambient temperature is higher than 30°C and the conductivity sensor reading is lower than 15 mS / cm (corresponding to a potassium nitrate solution concentration of less than 30%), it is determined that there is still heat absorption potential. The control module then activates the water injection unit 111 to start the freezing mode, and achieves cooling through the endothermic reaction between potassium nitrate and water.

[0042] 2. When the conductivity sensor reading is higher than 38 mS / cm (close to the potassium nitrate saturation concentration of about 38 g / 100mL), or when the temperature change rate inside the reaction zone is detected to be lower than 0.5°C / min during the endothermic process, indicating that the cooling efficiency has decayed, the system switches to reduction mode and starts the magnetic wave heating module 20 to dehydrate and recrystallize potassium nitrate in order to restore the recycling capacity of the reaction material.

[0043] This dual-threshold design is based on the solubility and conductivity characteristics of potassium nitrate (solubility increases with temperature, but conductivity decreases after saturation due to crystal precipitation), which can accurately determine the reaction state.

[0044] Please refer to the table below: Loop count Temperature drop maintenance rate conductivity saturation point Energy consumption for restoration 10 100% 38mS / cm 25Wh 50 85% 34mS / cm 28Wh

[0045] The data shows that the system of this invention can maintain 100% cooling efficiency after 10 cycles, demonstrating its high stability. However, when the number of cycles increases to 50, the temperature drop retention rate drops to approximately 85%, reflecting a certain degree of performance degradation of the reactant material under long-term operation. At this time, the conductivity saturation point also decreases from 38 mS / cm (millisiemens per centimeter) to 34 mS / cm, indicating that the crystallization behavior gradually affects the conductivity of the solution, and the reduction energy consumption increases from 25 Wh (watt-hour) to 28 Wh, indicating that the system needs to invest additional energy for reduction as the number of cycles increases. This result verifies that the "dual-threshold dynamic switching model" has a practical basis for the determination mechanism of cycle performance and confirms that the system design can start the reduction process in time before performance degradation, so as to extend the service life and cycle capacity of the material.

[0046] The reaction zone 11 can be manufactured using materials with high corrosion resistance, such as SUS316 stainless steel, or coated with a ceramic coating on the inner wall to improve its durability under acid and alkali resistance and high-temperature cycling. This material selection ensures that it is not easily corroded by potassium nitrate during long-term operation and also helps to extend the overall lifespan of the device.

[0047] The magnetic field generating element used in the magnetic wave heating module 20 can be made of manganese-zinc ferrite (Mn-Zn ferrite) material, which has a high permeability of more than 5000 and low magnetic loss characteristics. It can effectively conduct alternating magnetic fields, improve the overall magnetic induction heating efficiency and uniformity, and also avoid local overheating that could cause material deterioration.

[0048] In a preferred embodiment with sustainable energy applications, the device further includes a solar power unit and a lithium battery module, which can serve as the main power source for the control module 40 and the magnetic wave heating module 20. When there is sunlight outdoors, the solar panel can charge the lithium battery through the maximum power point tracking (MPPT) system; at night or during periods of no light, the lithium battery supplies the power required for stable operation of the system, ensuring that the device has the ability to operate independently off-grid, making it suitable for disaster areas, wilderness, or mobile vehicle applications.

[0049] While the present invention discloses the above embodiments, it is not intended to limit the present invention. Any modifications and simple substitutions made by those skilled in the art without departing from the spirit and scope of the present invention are covered by the claims of the present invention and their equivalents.

[0050] 100: Intelligent space temperature control device integrating phase change refrigeration and wireless magnetic wave heating 11: Reaction Zone 111: Water injection department 12: Filter membrane 13: First Space 14: Second Space 10: Enclosed space 20: Magnetic wave heating module 30: Energy Conducting Interface 40: Control Module 50: Airflow output unit

Claims

1. A smart space temperature control device integrating phase change refrigeration and wireless magnetic wave heating, characterized in that it comprises: a reaction zone (11) containing potassium nitrate, and a water injection section (111) above the reaction zone (11) for injecting water into the reaction zone (11); a filter membrane (12) disposed above the reaction zone (11); a first space (13) formed between the reaction zone (11) and the filter membrane (12); and a second space (14) disposed above the filter membrane (12) for collecting water vapor that rises from the reaction zone (11) and condensing it before it flows back into the reaction zone (11) along the filter membrane (12); wherein, The reaction zone (11), filter membrane (12), first space (13) and second space (14) are set together within a closed space (10); a magnetic wave heating module (20) is set outside the reaction zone (11), including at least one magnetic field generating element and a heating material, for providing an alternating magnetic field to heat and dehydrate the potassium nitrate in the reaction zone (11); an energy-conducting interface (30) is set on the outer surface of the reaction zone (11), configured to conduct the cold or heat energy generated in the reaction zone (11) to the external space.

2. The intelligent space temperature control device integrating phase change refrigeration and wireless magnetic wave heating as described in claim 1, wherein, It further includes a control module (40) that connects the reaction zone (11) and the magnetic wave heating module (20) to automatically control the start-up and switching of the water injection unit (111) and the magnetic wave heating module (20) according to the saturation state of the potassium nitrate solution in the reaction zone (11) or the externally sensed temperature.

3. The intelligent space temperature control device integrating phase change cooling and wireless magnetic wave heating as described in claim 1 further includes an airflow output unit (50) located in the vicinity of the energy-conducting interface (30) to promote the output of air to the external space after it is cooled by the energy-conducting interface (30).

4. The intelligent space temperature control device integrating phase change refrigeration and wireless magnetic wave heating as described in claim 1, wherein, The filter membrane (12) is a polytetrafluoroethylene (PTFE) nanofiber filter membrane with a pore size ranging from 0.05 μm to 0.2 μm, which allows water molecules to pass through and blocks potassium nitrate particles or crystals from escaping in the reverse direction.

5. The intelligent space temperature control device integrating phase change refrigeration and wireless magnetic wave heating as described in claim 1, wherein, The magnetic wave heating module (20) operates in the frequency range of 100 kHz to 300 kHz and transfers energy to the reaction zone (11) for heating through near-field magnetic induction.

6. The intelligent space temperature control device integrating phase change refrigeration and wireless magnetic wave heating as described in claim 1, wherein, The energy-conducting interface (30) includes a metal thermally conductive plate or a graphene heating and heat dissipation film, and is connected to the fan structure to improve the efficiency of heat and cold energy transfer.

7. The intelligent space temperature control device integrating phase change refrigeration and wireless magnetic wave heating as described in claim 2, wherein, The control module (40) includes a temperature sensor and a conductivity sensor to simultaneously monitor the external space temperature and the solution concentration in the reaction zone in order to determine the timing of switching between cooling and reduction modes.

8. The intelligent space temperature control device integrating phase change refrigeration and wireless magnetic wave heating as described in claim 1, wherein, The reaction zone (11) is a corrosion-resistant metal structure, made of stainless steel SUS316 or its ceramic coating composite structure, to resist the chemical corrosion of high concentration potassium nitrate solution.

9. The intelligent space temperature control device integrating phase change refrigeration and wireless magnetic wave heating as described in claim 1, wherein, The magnetic field generating element contained in the magnetic wave heating module (20) is made of manganese-zinc ferrite material with a permeability greater than 5000, so as to improve the magnetic induction heating efficiency.

10. The intelligent space temperature control device integrating phase change cooling and wireless magnetic wave heating as described in claim 2 further includes a solar power supply unit and a lithium battery module to provide energy sources for the control module (40) and the magnetic wave heating module (20), and to support off-grid operation or emergency backup power supply.

11. The intelligent space temperature control device integrating phase change refrigeration and wireless magnetic wave heating as described in claim 2, wherein the control module (40) presets a conductivity threshold and a temperature change rate threshold, and the magnetic wave heating module (20) is activated when either condition is triggered.

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