Phase change energy storage-based steam periodic condensing device and intelligent cooking equipment

Abstract

The invention relates to a periodic steam condensing device based on phase change energy storage and intelligent cooking equipment. The periodic steam condensing device comprises a control valve set, a phase change condensing module, a spraying module and a control module. The control valve group comprises a plurality of steam channels which are used for connecting the steam input port and the corresponding phase change condensation module; the control module is used for determining at least one condensation sub-module, marking the condensation sub-module as a condensation sub-module, and controlling the control valve group to open a steam channel connected with the condensation sub-module; when the condensation sub-module reaches a saturated state, the condensation sub-module is marked as a regeneration sub-module, the control valve group is made to close a steam channel connected with the condensation sub-module, and the spray module is made to cool the regeneration sub-module; and after cooling of the regeneration sub-module is completed, marking the regeneration sub-module as a standby sub-module. The working states are periodically switched through multiple modules, the condensation efficiency and stability are improved, and the problem of cooling efficiency attenuation caused by temperature saturation of a single-channel heat exchanger is solved.

Description

Technical Field

[0001] This application relates to the field of smart appliance technology, and in particular to a steam periodic condensation device and a smart cooking device based on phase change energy storage. Background Technology

[0002] A condenser is a device that cools gaseous vapor and converts it into a liquid state. Its working principle involves transferring the latent heat of the vapor to a low-temperature cooling medium via a heat transfer surface, thereby achieving phase change condensation. This process is widely used in various fields such as industry, energy, food processing, and daily life. For example, it plays a crucial role in steam circulation systems of power plants, refrigeration and air conditioning units, seawater desalination plants, and steam recovery systems in kitchen cooking equipment.

[0003] Currently, most conventional condensing units employ single-channel tubular or plate heat exchanger structures. The cooling medium (such as water or air) flows unidirectionally through the heat exchange channel at a constant flow rate, indirectly exchanging heat with high-temperature steam. However, this design reveals significant performance defects during continuous operation: as the heat exchange process progresses, the cooling medium continuously absorbs heat along the path, causing its temperature to rise steadily and gradually approach the steam's saturation temperature. For example, cooling water with an inlet temperature of 25°C may rise to 80°C or even higher after prolonged operation, resulting in a significant reduction in the effective temperature difference between it and the steam, and a sharp decrease in the heat transfer driving force. Therefore, although the condensing efficiency of the unit can reach over 90% in the initial stage of operation, it rapidly declines as the cooling medium temperature rises, eventually falling below 50%, severely impacting the system's stability and energy efficiency.

[0004] There is currently no effective solution to the problem of severe cooling efficiency degradation in related technologies. Summary of the Invention

[0005] This embodiment provides a steam periodic condensation device and an intelligent cooking device based on phase change energy storage to solve the problem of severe cooling efficiency degradation in related technologies.

[0006] In a first aspect, this embodiment provides a steam periodic condensation device based on phase change energy storage, the device comprising: a control valve group, at least three phase change condensation modules, a spray module, and a control module;

[0007] The control valve assembly includes multiple steam channels; each steam channel is connected to a steam inlet and a corresponding phase change condensation module.

[0008] The phase change condensation module is used to condense steam;

[0009] The spray module is used to cool the phase change condensation module;

[0010] The control module, connected to the control valve group and the spray module, is used to identify at least one phase change condensation module from the standby queue, mark it as a condensation submodule, control the control valve group to open the steam passage connected to the condensation submodule; when the condensation submodule reaches saturation, mark the condensation submodule as a regeneration submodule, control the control valve group to close the steam passage connected to the condensation submodule, and control the spray module to cool the regeneration submodule; when the regeneration submodule has finished cooling, mark it as a standby submodule to add it to the standby queue.

[0011] In some embodiments, the phase change condensation module includes: a honeycomb thermally conductive frame and a phase change material layer;

[0012] The phase change material layer is disposed within the interlayer of the honeycomb thermally conductive frame;

[0013] The honeycomb thermally conductive frame includes an aluminum plate and an oleophobic coating disposed on the surface of the aluminum plate;

[0014] The phase change condensation module also includes: a condensate channel, a water collection tank, and an ultrasonic cleaner;

[0015] The condensate channel is used to connect the honeycomb heat-conducting frame to the water collection tank, and the ultrasonic cleaner is disposed in the water collection tank.

[0016] In some embodiments, the control module is also configured to acquire the steam input flow rate in high-efficiency mode;

[0017] The remaining heat absorption capacity of the condenser submodule is predicted based on the steam input flow rate;

[0018] Based on the remaining heat absorption capacity, determine whether the condenser submodule has reached saturation.

[0019] In some embodiments, the device further includes: at least three temperature sensors; each of the temperature sensors is disposed opposite to one of the phase change condensation modules and is used to measure the real-time temperature of the phase change condensation module;

[0020] The control module is connected to the temperature sensor and is used to obtain the first real-time temperature and running time of the condenser submodule.

[0021] Predicting the remaining heat absorption capacity of the condenser submodule based on the steam input flow rate includes:

[0022] Based on the first real-time temperature, the steam input flow rate, and the operating time of the condenser submodule, the remaining heat absorption capacity of the condenser submodule is predicted.

[0023] In some embodiments, the control module is further configured to acquire the first real-time temperature of the condenser submodule in normal mode; and determine whether the condenser submodule has reached saturation based on the relationship between the first real-time temperature and a preset temperature threshold.

[0024] In some embodiments, determining whether the condensation submodule has reached saturation based on the relationship between the first real-time temperature and a preset temperature threshold includes:

[0025] If the first real-time temperature is greater than or equal to a preset temperature threshold, then the condenser submodule is determined to have reached saturation.

[0026] If the first real-time temperature is less than the temperature threshold, it is determined whether the first real-time temperature changes within a preset time threshold; if the first real-time temperature does not change within the time threshold, it is determined that the condenser submodule has reached saturation; if the first real-time temperature changes within the time threshold, it is determined that the condenser submodule has not reached saturation.

[0027] In some embodiments, the control module is also configured to switch the high-efficiency mode to the normal mode in response to an automatically or manually triggered abnormal signal.

[0028] In some embodiments, the control module is further configured to acquire a second real-time temperature of the regeneration submodule;

[0029] The flow rate of the spray water output by the spray module is adjusted based on the second real-time temperature.

[0030] In some embodiments, the apparatus further includes: a recovery module connected to the phase change condensation module; the recovery module includes multiple output channels;

[0031] The recycling module is used to recover the spray water from the cooling of the regeneration submodule to the output channel. Each output channel is used to heat the spray water to a different temperature so as to output it to a different target device.

[0032] Secondly, this embodiment provides an intelligent cooking device, including the steam periodic condensation device based on phase change energy storage as described in any of the first aspects.

[0033] Compared with related technologies, the steam periodic condensation device and intelligent cooking equipment based on phase change energy storage provided in this embodiment include a control valve group, at least three phase change condensation modules, a spray module, and a control module. The control valve group includes multiple steam channels, each connected to a steam inlet and a corresponding phase change condensation module. The phase change condensation module is used to condense steam. The spray module is used to cool the phase change condensation module. The control module is used to identify at least one condensation submodule from the standby queue, mark it as a condensation submodule, and control the control valve group to open the steam channel connected to the condensation submodule. When the condensation submodule reaches saturation, it is marked as a regeneration submodule, and the control valve group is controlled to close the steam channel connected to the condensation submodule, while the spray module is controlled to cool the regeneration submodule. After the regeneration submodule has cooled completely, it is marked as a standby submodule and added to the standby queue. By periodically switching the working state of multiple modules, it ensures that low-temperature phase change material is always available for condensation, solving the problem of continuous cooling due to temperature saturation in single-channel heat exchangers, and improving the efficiency and stability of condensation.

[0034] Details of one or more embodiments of this application are set forth in the following drawings and description to make other features, objects and advantages of this application more readily apparent. Attached Figure Description

[0035] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:

[0036] Figure 1 This is a structural block diagram of a steam periodic condensation device based on phase change energy storage in an embodiment of this application;

[0037] Figure 2 This is a schematic diagram illustrating the process of the control module controlling the phase change condensation module to operate periodically in an embodiment of this application.

[0038] Figure 3 This is a schematic diagram of the phase change condensation module in an embodiment of this application;

[0039] Figure 4 This is a schematic diagram of the working process of the spray module in the embodiments of this application;

[0040] Figure 5 This is a schematic diagram of the working process of the steam periodic condensation device based on phase change energy storage in a preferred embodiment of this application.

[0041] Reference numerals: 10, control valve assembly; 20, phase change condensation module; 21, honeycomb thermal conductive frame; 22, phase change material layer; 30, spray module; 40, control module. Detailed Implementation

[0042] To better understand the purpose, technical solution, and advantages of this application, the application is described and illustrated below in conjunction with the accompanying drawings and embodiments.

[0043] Unless otherwise defined, the technical or scientific terms used in this application shall have the general meaning understood by one of ordinary skill in the art to which this application pertains. Words such as “a,” “an,” “an,” “the,” “the,” and “these” used in this application do not indicate quantitative limitation and may be singular or plural. The terms “comprising,” “including,” “having,” and any variations thereof used in this application are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or device that comprises a series of steps or modules (units) is not limited to the listed steps or modules (units) but may include steps or modules (units) not listed, or may include other steps or modules (units) inherent to these processes, methods, products, or devices. Words such as “connected,” “linked,” and “coupled” used in this application are not limited to physical or mechanical connections but may include electrical connections, whether direct or indirect. “Multiple” used in this application refers to two or more. “And / or” describes the relationship between related objects, indicating that three relationships may exist; for example, “A and / or B” can represent: A alone, A and B simultaneously, and B alone. Normally, the character " / " indicates that the objects before and after it are in an "or" relationship. The terms "first," "second," "third," etc., used in this application are merely to distinguish similar objects and do not represent a specific order of objects.

[0044] This embodiment provides a steam periodic condensation device based on phase change energy storage. Figure 1 This is a structural block diagram of the steam periodic condensation device based on phase change energy storage in this embodiment, as shown below. Figure 1 As shown, the device includes: a control valve assembly 10, at least three phase change condensation modules 20, a spray module 30, and a control module 40.

[0045] The control valve assembly 10 includes multiple steam channels; each steam channel is connected to a steam inlet and a corresponding phase change condensation module 20. Specifically, the control valve assembly 10 is used to maintain efficient condensation. It is triggered by preset conditions to switch the steam path, causing the phase change condensation modules 20 to work alternately. The triggering conditions are set according to actual use, such as when the temperature rise exceeds the optimal heat absorption range of the phase change material, or when the condensation time exceeds a preset duration.

[0046] Phase change condensation module 20 is used to condense steam. Specifically, phase change condensation module 20 includes a phase change material, which is a substance whose state changes due to temperature changes and absorbs or provides latent heat. In this embodiment, it is used to absorb the latent heat of steam.

[0047] The spray module 30 is used to cool the phase change condensation module 20. Through cooling, the phase change material reverts from a liquid state to a solid state, preparing it for the next use. The spray module 30 uses a pulse mode (2 seconds on / 6 seconds off), saving 60% of water compared to continuous spraying.

[0048] Control module 40, connected to control valve assembly 10 and spray module 30, see [link / reference] Figure 2 The control module 40 is used to identify at least one phase change condensing module 20 from the standby queue, mark it as a condensing sub-module, and control the control valve group 10 to open the steam passage connected to the condensing sub-module; when the condensing sub-module reaches saturation, the condensing sub-module is marked as a regeneration sub-module, and the control valve group 10 is controlled to close the steam passage connected to the condensing sub-module, and the spray module 30 is controlled to cool the regeneration sub-module; when the regeneration sub-module has finished cooling, it is marked as a standby sub-module to be added to the standby queue.

[0049] Specifically, at least three phase change condensing modules 20 are connected in parallel and operate alternately to achieve a three-state cycle of "working → regeneration → standby". The state cycle process is recorded by state flags, and the cycle direction is usually: switching the condensing submodule to the regeneration submodule, switching the regeneration submodule to the standby submodule, and switching the standby submodule back to the condensing submodule.

[0050] The phase change energy storage-based steam periodic condensation device and intelligent cooking equipment provided in this embodiment include a control valve group 10, at least three phase change condensation modules 20, a spray module 30, and a control module 40. The control valve group 10 includes multiple steam channels, each connected to a steam inlet and a corresponding phase change condensation module 20. The phase change condensation module 20 is used to condense steam. The spray module 30 is used to cool the phase change condensation module 20. The control module 40 is used to identify at least one condensation submodule from the standby queue, mark it as a condensation submodule, and control the control valve group 10 to open the steam channel connected to the condensation submodule. When the condensation submodule reaches saturation, it is marked as a regeneration submodule, and the control valve group 10 is controlled to close the steam channel connected to the condensation submodule, while the spray module 30 is controlled to cool the regeneration submodule. After the regeneration submodule has cooled completely, it is marked as a standby submodule and added to the standby queue. By periodically switching the working state of multiple modules, it ensures that low-temperature phase change material is always available for condensation, solving the temperature saturation problem of single-channel heat exchangers and improving the efficiency and stability of condensation.

[0051] In some of these embodiments, such as Figure 3 As shown, the phase change condensation module 20 includes: a honeycomb thermally conductive frame 21 and a phase change material layer 22. Figure 3 The shaded area represents phase change material layer 22.

[0052] A phase change material layer 22 is disposed within the interlayer of the honeycomb thermally conductive frame 21 for temperature regulation; preferably, the phase change material is sodium sulfate decahydrate Na2SO4·10H2O with a thickness of 10 mm or more, preferably 15 mm; in other embodiments, other materials may also be used.

[0053] The honeycomb thermally conductive frame 21 includes an aluminum plate and an oleophobic coating on the surface of the aluminum plate. Specifically, aluminum has high thermal conductivity (approximately 237 W / m·K); the honeycomb structure has a large specific surface area, which can enhance the heat exchange rate, and the gas channels can guide the uniform flow of steam; it helps to quickly transfer the heat of steam to the phase change material, while also assisting in the dissipation of heat during the module cooling process.

[0054] Specifically, the oleophobic coating prevents oil stains from adhering to the aluminum plate surface, ensuring smooth flow of condensate. The oleophobic coating uses PTFE (polytetrafluoroethylene), a high-performance fluoropolymer with extremely low surface energy, significantly reducing liquid adhesion. Liquids such as water droplets or oil form an angle greater than 150° on the coating surface, making the droplets easily roll off and carry away contaminants. PTFE can be uniformly coated onto the surface of the phase change material-encapsulated aluminum plate using a spraying process.

[0055] In some embodiments, the phase change condensation module further includes: a condensate channel, a water collection tank, and an ultrasonic cleaner. The condensate channel connects the honeycomb heat-conducting frame to the water collection tank, and the ultrasonic cleaner is disposed within the water collection tank.

[0056] Specifically, the condensate drain channel should have an inclination angle of ≥10° (with the horizontal plane as a reference) to accelerate condensate drainage through gravity, preventing water stagnation and impurity deposition. Ultrasonic cleaners use high-frequency ultrasound (typically 20kHz-40kHz) to generate cavitation, instantly breaking down particulate contaminants in the water. Ultrasonic cleaners can be set to run once a week to avoid frequent energy consumption and prevent long-term scale buildup.

[0057] In this embodiment, a non-contact cleaning method is used, requiring no disassembly of parts, making it suitable for narrow or complex pipes. The maintenance cycle is extended from 1 month to more than 6 months; the cleaning time is shortened from 30 minutes / time to 5 minutes / time.

[0058] In some of these embodiments, see Figure 1 The control module 40 is also used to execute the following control methods, the specific steps of which include:

[0059] Step S201: In high-efficiency mode, obtain the steam input flow rate.

[0060] Specifically, the control module 40 includes a high-efficiency mode and a normal mode, which can be switched during operation to balance high efficiency and system robustness. The steam flow rate is the total steam volume per unit time (kg / s or g / min), which can be obtained by measuring historical steam generation and consumption time-series data through sensors (such as flow meters and pressure-temperature combined calculations). This data is then input into an LSTM model to predict the future trend of steam flow rate in the near future.

[0061] Step S202: Predict the remaining heat absorption capacity of the condenser submodule based on the steam input flow rate.

[0062] Step S203: Based on the remaining heat absorption capacity, determine whether the condenser submodule has reached saturation.

[0063] Specifically, the total heat absorption capacity Q of the phase change material is known. total =m PCM ×L PCM , where m PCM For the mass of phase change materials, L PCM Latent heat of phase change material (PCM) refers to the heat absorbed or released per unit mass of PCM during the phase change process. Additionally, the heat Q already absorbed by the PCM is also considered. absorbed It can be estimated using the predicted steam flow rate (i.e., the steam input flow rate). Based on the law of conservation of energy, the remaining heat absorption capacity is: Q remain =Q total -Q absorbed When Q remain A value close to 0 indicates that the module is about to saturate and needs to be switched over.

[0064] In this embodiment, predictive switching based on remaining heat absorption capacity can complete the switching of the phase change condensation module 20 before the efficiency drops significantly, ensuring that the system always maintains high condensation efficiency.

[0065] In some of these embodiments, see Figure 1 The device also includes: at least three temperature sensors; each temperature sensor is positioned opposite a phase change condensation module 20 and is used to measure the real-time temperature of the phase change condensation module 20. A control module 40, connected to the temperature sensors, is used to execute the following control method, the steps of which specifically include:

[0066] Step S204: Obtain the first real-time temperature and running time of the condenser submodule.

[0067] Step S205, predicting the remaining heat absorption capacity of the condensing submodule based on the steam input flow rate, specifically includes: predicting the remaining heat absorption capacity of the condensing submodule based on the first real-time temperature, the steam input flow rate, and the operating time of the condensing submodule.

[0068] In this embodiment, real-time temperature avoids errors caused by relying solely on theoretical models (such as environmental heat loss and local temperature unevenness), steam input flow rate is used to quantify the heat energy input per unit time and dynamically respond to changes, and running time is used to provide the time dimension of heat accumulation. The combination of these three improves the real-time performance and accuracy of the prediction.

[0069] In some of these embodiments, see Figure 1 The control module 40 is also used to execute the following control methods, the specific steps of which include:

[0070] Step S206: In normal mode, acquire the first real-time temperature of the condenser submodule. Specifically, the control module 40 is also used to switch from high-efficiency mode to normal mode in response to automatically or manually triggered abnormal signals.

[0071] Step S207: Based on the relationship between the first real-time temperature and the preset temperature threshold, determine whether the condenser submodule has reached saturation.

[0072] In this embodiment, if the predictive switching strategy is abnormal or the operating conditions change abruptly, temperature detection can be used as a supplement to safely trigger the switching of the phase change condensation module 20.

[0073] In some embodiments, step S207 above, based on the relationship between the first real-time temperature and a preset temperature threshold, determines whether the condensation submodule has reached saturation, specifically including:

[0074] If the first real-time temperature is greater than or equal to the preset temperature threshold, the condenser module is determined to have reached saturation.

[0075] If the first real-time temperature is less than the temperature threshold, it is determined whether the first real-time temperature changes within the preset time threshold. If the first real-time temperature does not change within the time threshold, it is determined that the condenser submodule has reached saturation. If the first real-time temperature changes within the time threshold, it is determined that the condenser submodule has not reached saturation.

[0076] Specifically, if the current operating module temperature exceeds the set threshold (e.g., 33℃ or 34℃, considering sensor accuracy ±0.5℃), it indicates that the phase change material has approached saturation (liquid state), its heat absorption capacity has decreased, and switching is required. If the temperature remains close to the threshold for a certain period of time (e.g., 5 minutes), even if there is no obvious overheating, switching will be triggered.

[0077] In this embodiment, the temperature-based saturation state judgment strategy is simple and reliable, and can be used as a fallback logic to ensure that the condenser submodule will not overheat.

[0078] In some of these embodiments, see Figure 1 The control module 40 is also used to execute the following control methods, the specific steps of which include:

[0079] Step S301: Obtain the second real-time temperature of the regeneration submodule.

[0080] Step S302: The flow rate of the spray water is output based on the second real-time temperature regulating spray module 30.

[0081] Specifically, based on the second real-time temperature, it is determined whether the regeneration submodule is the specific module requiring cooling, ensuring accurate control of the target object. See [link / reference]. Figure 4 If so, then select different flow drive methods according to whether the current water pressure meets the standard (≥0.6MPa): (1) Water pressure ≥0.6MPa: directly open the proportional valve and adjust the flow rate through the current second real-time temperature; (2) Water pressure <0.6MPa: start the booster pump to raise the pressure to the threshold, and then adjust it through the proportional valve to ensure the flow rate is stable. Until the second real-time temperature of the regeneration submodule reaches the target temperature (e.g., 28℃), close the valve and stop spray cooling. At this time, the regeneration submodule will be re-marked as the standby submodule. In the cooling process, it can be judged whether the cooling rate meets the standard, and thus adjust the flow rate. For example, if the cooling rate is 1℃ / min, then increase the flow rate by 10% (e.g., the current flow rate is 10L / min → 11L / min), and then re-monitor the cooling rate (feedback loop), repeat "rate judgment → flow rate adjustment" until the rate meets the standard or the temperature meets the standard. This mechanism not only ensures the cooling efficiency, but also avoids the risk of overshoot, and is suitable for phase change condensation scenarios with high temperature control accuracy requirements.

[0082] In some embodiments, the apparatus further includes a recovery module connected to the phase change condensation module; the recovery module includes multiple output channels. The recovery module is used to recover the spray water from the cooling regeneration submodule to the output channels, each output channel being used to heat the spray water to a different temperature for output to a different target device.

[0083] Specifically, the back end of the recycling module can be divided into multiple output channels. Each output channel is connected to a steam generator, faucet, dishwashing system, etc. Each channel is equipped with a solenoid valve and a temperature controller to achieve multi-target temperature zone output.

[0084] This embodiment provides an intelligent cooking device, including the steam periodic condensation device based on phase change energy storage as described in any of the above embodiments.

[0085] Specifically, with the accelerated pace of modern life and consumption upgrades, traditional cooking methods are increasingly unable to meet users' demands for convenience, precision, and health. Intelligent cooking equipment, through the integration of the Internet of Things, sensor technology, and artificial intelligence algorithms, achieves automated control and optimization of the cooking process, becoming an important development direction in the kitchen appliance field. In this embodiment, intelligent cooking equipment applying a steam periodic condensation device based on phase change energy storage is evolving from a "single-function appliance" to a "kitchen hub," reshaping the cooking experience in homes and the catering industry.

[0086] In this embodiment, see Figure 1 The control valve assembly 10 includes multiple steam channels, each connected to a steam inlet and a corresponding phase change condensing module 20. The phase change condensing module 20 is used to condense steam. A spray module 30 is used to cool the phase change condensing module 20. A control module 40 is used to identify at least one condensing submodule from the standby queue, mark it as a condensing submodule, and control the control valve assembly 10 to open the steam channel connected to the condensing submodule. When the condensing submodule reaches saturation, it is marked as a regeneration submodule, and the control valve assembly 10 is controlled to close the steam channel connected to the condensing submodule, while the spray module 30 is controlled to cool the regeneration submodule. After the regeneration submodule has cooled down, it is marked as a standby submodule and added to the standby queue. By periodically switching the working states of multiple modules, a constant supply of low-temperature phase change material is ensured for condensation, solving the temperature saturation problem of single-channel heat exchangers and improving the condensation efficiency and stability of the intelligent cooking equipment.

[0087] The present embodiment will now be described and illustrated through preferred embodiments.

[0088] Figure 5 This is a schematic diagram of the working process of a steam periodic condensation device based on phase change energy storage according to a preferred embodiment of this invention. This device is suitable for smart cooking equipment, such as a smart steam oven. Figure 1 and Figure 5 As shown, the device includes: a control valve assembly 10, three phase change condensation modules 20, three temperature sensors, a spray module 30, and a control module 40.

[0089] The control valve assembly 10 is a three-way control valve, which includes three steam channels; each steam channel is connected to the steam inlet of the cooking chamber and the corresponding phase change condensation module 20.

[0090] The phase change condensation module 20, used for condensing steam, includes: a honeycomb thermally conductive frame 21 and a phase change material layer 22, a condensate channel, a water collection tank, and an ultrasonic cleaner; wherein, the phase change material layer 22 is disposed within the interlayer of the honeycomb thermally conductive frame 21; the honeycomb thermally conductive frame 21 includes an aluminum plate and an oleophobic coating disposed on the surface of the aluminum plate; the condensate channel is used to connect the honeycomb thermally conductive frame 21 to the water collection tank, and the ultrasonic cleaner is disposed within the water collection tank.

[0091] The spray module 30 is used to cool the phase change condensation module 20.

[0092] Each temperature sensor is positioned opposite a phase change condensation module 20 and is used to measure the real-time temperature of the phase change condensation module 20. The temperature sensors are infrared temperature sensors.

[0093] The control module 40, connected to the control valve group 10 and the spray module 30, is used to identify at least one phase change condensing module 20 from the standby queue, mark it as a condensing sub-module, control the control valve group 10 to open the steam passage connected to the condensing sub-module; when the condensing sub-module reaches saturation, the condensing sub-module is marked as a regeneration sub-module, and the control valve group 10 is controlled to close the steam passage connected to the condensing sub-module, and the spray module 30 is controlled to cool the regeneration sub-module; when the regeneration sub-module has finished cooling, it is marked as a standby sub-module to be added to the standby queue.

[0094] The following provides a detailed description of the phase change condensation module 20 under different operating conditions:

[0095] For the condensation submodule: Steam flows through the aluminum honeycomb structure, transferring heat to the phase change material layer 22, where the phase change material absorbs heat and condenses the steam; simultaneously, an infrared temperature sensor monitors its temperature. Once the temperature rises or the material becomes saturated, the infrared temperature sensor triggers a switching signal to switch the control valve group 10 to another low-temperature module for continued condensation.

[0096] For the regeneration submodule: the spray device cools the phase change material from the previous cycle (i.e., the replaced condenser submodule). After the module releases heat, it is re-cured. The aluminum honeycomb structure helps to dissipate heat quickly. After the temperature drops back to the set value, it enters the standby stage.

[0097] For the standby submodule: natural heat dissipation, and wait for the control valve group 10 to introduce steam into it.

[0098] The control module 40 is also used to execute a method for determining whether the condensation submodule has reached saturation. This determination method includes the following steps:

[0099] S1. In high-efficiency mode, obtain the steam input flow rate and the first real-time temperature and running time of the condenser submodule.

[0100] S2. Based on the first real-time temperature, steam input flow rate, and the operating time of the condenser submodule, predict the remaining heat absorption capacity of the condenser submodule.

[0101] S3. Based on the remaining heat absorption capacity, determine whether the condenser submodule has reached saturation.

[0102] S4. In response to an abnormal signal triggered automatically or manually, switch from high-efficiency mode to normal mode.

[0103] S5. In normal mode, obtain the first real-time temperature of the condenser module.

[0104] S6. If the first real-time temperature is greater than or equal to the preset temperature threshold, the condenser submodule is determined to be saturated.

[0105] S7. If the first real-time temperature is less than the temperature threshold, determine whether the first real-time temperature changes within the preset time threshold; if the first real-time temperature does not change within the time threshold, determine that the condenser submodule has reached saturation; if the first real-time temperature changes within the time threshold, determine that the condenser submodule has not reached saturation.

[0106] The control module 40 is also used to acquire the second real-time temperature of the regeneration submodule and adjust the flow rate of the spray water output by the spray module 30 based on the second real-time temperature.

[0107] In some embodiments, the apparatus further includes: a recovery module connected to the phase change condensation module 20; the recovery module includes multiple output channels; the recovery module is used to recover the condensate generated after the condensation module cools the steam, as well as the spray water from the cooling regeneration submodule, to the output channels, each output channel being used to heat the spray water to a different temperature for output to a different target device.

[0108] In this preferred embodiment, by periodically switching the operating states of multiple modules, a constant supply of low-temperature phase change material is ensured for condensation, thus solving the temperature saturation problem of single-channel heat exchangers. This preferred embodiment also utilizes the heat storage characteristics of phase change materials to convert the latent heat of vapor into controllable thermal energy output. Furthermore, this preferred embodiment reduces the risk of oil contamination through a self-cleaning structure and material optimization.

[0109] It should be noted that the steps shown in the above process or in the flowchart of the accompanying figures can be executed in a computer system such as a set of computer-executable instructions, and although a logical order is shown in the flowchart, in some cases the steps shown or described may be executed in a different order than that shown here.

[0110] It should be understood that the specific embodiments described herein are merely illustrative of the application and not intended to limit it. All other embodiments derived by those skilled in the art based on the embodiments provided in this application without inventive effort are within the scope of protection of this application.

[0111] Obviously, the accompanying drawings are merely some examples or embodiments of this application. Those skilled in the art can apply this application to other similar situations based on these drawings without any creative effort. Furthermore, it is understood that although the work done in this development process may be complex and lengthy, for those skilled in the art, certain design, manufacturing, or production modifications made based on the technical content disclosed in this application are merely conventional technical means and should not be considered as insufficient disclosure of this application.

[0112] The term "embodiment" in this application refers to a specific feature, structure, or characteristic described in connection with an embodiment that may be included in at least one embodiment of this application. The appearance of this phrase in various places in the specification does not necessarily imply the same embodiment, nor does it imply that it is mutually exclusive with or independent of other embodiments. It will be clearly or implicitly understood by those skilled in the art that the embodiments described in this application may be combined with other embodiments without conflict.

[0113] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of patent protection. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the appended claims.

Claims

1. A steam periodic condensation device based on phase change energy storage, characterized in that, The device includes: a control valve assembly, at least three phase change condensation modules, a spray module, and a control module; The control valve assembly includes multiple steam channels; each steam channel is connected to a steam inlet and a corresponding phase change condensation module. The phase change condensation module is used to condense steam; The spray module is used to cool the phase change condensation module; The control module, connected to the control valve group and the spray module, is used to identify at least one phase change condensation module from the standby queue, mark it as a condensation submodule, control the control valve group to open the steam passage connected to the condensation submodule; when the condensation submodule reaches saturation, mark the condensation submodule as a regeneration submodule, control the control valve group to close the steam passage connected to the condensation submodule, and control the spray module to cool the regeneration submodule; when the regeneration submodule has finished cooling, mark it as a standby submodule to add it to the standby queue.

2. The steam periodic condensation device based on phase change energy storage according to claim 1, characterized in that, The phase change condensation module includes: a honeycomb thermally conductive frame and a phase change material layer; The phase change material layer is disposed within the interlayer of the honeycomb thermally conductive frame; The honeycomb thermally conductive frame includes an aluminum plate and an oleophobic coating disposed on the surface of the aluminum plate; The phase change condensation module also includes: a condensate channel, a water collection tank, and an ultrasonic cleaner; The condensate channel is used to connect the honeycomb heat-conducting frame to the water collection tank, and the ultrasonic cleaner is disposed in the water collection tank.

3. The steam periodic condensation device based on phase change energy storage according to claim 1, characterized in that, The control module is also used to acquire the steam input flow rate in high-efficiency mode; The remaining heat absorption capacity of the condenser submodule is predicted based on the steam input flow rate; Based on the remaining heat absorption capacity, determine whether the condenser submodule has reached saturation.

4. The steam periodic condensation device based on phase change energy storage according to claim 3, characterized in that, The device further includes: at least three temperature sensors; each of the temperature sensors is disposed opposite to one of the phase change condensation modules and is used to measure the real-time temperature of the phase change condensation module; The control module is connected to the temperature sensor and is used to obtain the first real-time temperature and running time of the condenser submodule. Predicting the remaining heat absorption capacity of the condenser submodule based on the steam input flow rate includes: Based on the first real-time temperature, the steam input flow rate, and the operating time of the condenser submodule, the remaining heat absorption capacity of the condenser submodule is predicted.

5. The steam periodic condensation device based on phase change energy storage according to claim 4, characterized in that, The control module is further configured to, in normal mode, acquire the first real-time temperature of the condenser submodule; and, based on the relationship between the first real-time temperature and a preset temperature threshold, determine whether the condenser submodule has reached saturation.

6. The steam periodic condensation device based on phase change energy storage according to claim 5, characterized in that, Based on the relationship between the first real-time temperature and the preset temperature threshold, determining whether the condensation submodule has reached saturation includes: If the first real-time temperature is greater than or equal to a preset temperature threshold, then the condenser submodule is determined to have reached saturation. If the first real-time temperature is less than the temperature threshold, it is determined whether the first real-time temperature changes within a preset time threshold; if the first real-time temperature does not change within the time threshold, it is determined that the condenser submodule has reached saturation; if the first real-time temperature changes within the time threshold, it is determined that the condenser submodule has not reached saturation.

7. The steam periodic condensation device based on phase change energy storage according to claim 5, characterized in that, The control module is also used to switch the high-efficiency mode to the normal mode in response to an abnormal signal triggered automatically or manually.

8. The steam periodic condensation device based on phase change energy storage according to claim 1, characterized in that, The control module is also used to acquire the second real-time temperature of the regeneration submodule; The flow rate of the spray water output by the spray module is adjusted based on the second real-time temperature.

9. The steam periodic condensation device based on phase change energy storage according to claim 1, characterized in that, The device further includes a recovery module connected to the phase change condensation module; the recovery module includes multiple output channels. The recycling module is used to recover the spray water from the cooling of the regeneration submodule to the output channel. Each output channel is used to heat the spray water to a different temperature so as to output it to a different target device.

10. A smart cooking device, characterized in that, Includes the steam periodic condensation device based on phase change energy storage as described in any one of claims 1 to 9.

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