Cooling device and method for white spirit production

Abstract

The invention relates to a cooling device and method for white spirit production, the cooling device comprises three cooling modules which are sequentially connected in series, each cooling module comprises a magnetic refrigeration body, a control coil, a capillary channel, an evaporation heat conduction agent, a temperature difference thermocouple, a heat conduction switch layer, a phase change cold storage layer and a cooling pipe, the magnetic refrigeration body is driven to carry out magnetization heat release and demagnetization heat absorption under the heat insulation condition, the refrigeration effect is generated, the evaporation heat conduction agent in the capillary channel rapidly transfers heat in vaporization condensation circulation, heat exchange between the magnetic refrigeration body and the cold storage layer is enhanced, the heat conduction switch layer adjusts the heat conduction performance according to temperature changes, and cold loss of the cold storage layer is prevented. The phase change cold storage material is constant in temperature and smooth in refrigeration temperature fluctuation in the phase change process, and compared with traditional compression refrigeration, the device has the advantages of being low in refrigeration temperature, high in energy efficiency, small in noise, free of pollution and the like, and can reduce energy consumption of white spirit production and reduce environmental pollution.

Description

Technical Field

[0001] The present invention relates to a cooling device and method for the production of baijiu (Chinese liquor), and particularly to a cooling device and method for the production of baijiu applied in the field of cooling device technology. Background Technology

[0002] Baijiu is a distilled spirit unique to my country. The cooling process in its production directly affects product quality and energy consumption. Traditional baijiu cooling methods mostly use compression refrigeration or ice water cooling, which have problems such as insufficient cooling temperature, high energy consumption, and refrigerant pollution.

[0003] Chinese invention patent CN117168082 discloses a baijiu (Chinese liquor) raw material cooling device. This device uses a tossing mechanism in conjunction with a drive mechanism, a control mechanism, a fan assembly, a lifting mechanism, and refrigeration components to move the baijiu raw materials at various positions on the cooling tank, ensuring they are fully flattened and improving cooling efficiency and quality. However, this device still uses traditional compression refrigeration, which has limited cooling temperature, high energy consumption, and the raw materials are prone to clumping during cooling, affecting heat transfer.

[0004] Chinese invention patent CN111621398 discloses a circulating cooling device for baijiu (Chinese liquor) production. Through the coordination of a distillation unit, a condensation unit, and a cooling water circulation mechanism, it achieves the recycling of the condenser, resulting in good cooling of the liquor vapor. However, the condensation temperature of this device is not low enough to meet the requirements for deep cooling of baijiu. Furthermore, the condensation process is intermittent, leading to discontinuous cooling output and affecting production efficiency.

[0005] In summary, existing baijiu cooling devices still need improvement in terms of cooling temperature, energy efficiency, and continuity. With the continuous expansion of the baijiu industry and the increasing pressure to reduce energy consumption and emissions, there is an urgent need to develop a new type of baijiu cooling device that is highly efficient, energy-saving, environmentally friendly, and intelligent, in order to promote the green upgrading and high-quality development of baijiu production. Summary of the Invention

[0006] In view of the above-mentioned prior art, the technical problem to be solved by the present invention is how to develop a multi-stage series cooling device and method for liquor production based on the principle of magnetic refrigeration. Through the integrated application of technologies such as multi-stage magnetic refrigeration in series, capillary tube enhanced heat transfer, thermoelectric power generation to recover waste heat, thermal conductivity switch to suppress reverse heat transfer, and phase change material for smooth cold storage, the liquor cooling process can be achieved in a low-temperature, high-efficiency, environmentally friendly and intelligent manner.

[0007] To address the aforementioned problems, this invention provides a cooling device and method for liquor production, comprising multiple first, second, and third cooling modules fixedly connected in sequence. Each of the first, second, and third cooling modules includes a magnetic refrigeration element, which has multiple through holes. A control coil is wound and fixedly connected to the outer end of the magnetic refrigeration element, and a thermocouple is fixedly connected to the bottom end of the magnetic refrigeration element. A control module is fixedly connected to the outer end of the thermocouple. Each through hole is filled with an evaporative heat-conducting agent. A unidirectional cooling switch layer is fixedly connected to the outer end of the control coil, and a cold storage layer is fixedly connected to the outer end of the unidirectional cooling switch layer. A cooling pipe is wound around the outer end of the cold storage layer, and electromagnetic butterfly valves are fixedly connected to both ends of the cooling pipe. The thermocouples of the second and third cooling modules are fixedly connected to the bottom ends of the magnetic refrigeration elements of the first and second cooling modules, respectively.

[0008] As a further improvement of this application, the electromagnetic butterfly valves at the top of multiple cooling pipes are fixedly connected to the same feed pipe at the end away from the cooling pipe, and the feed pipe at the end away from the electromagnetic butterfly valve is fixedly connected to external equipment. The electromagnetic butterfly valves at the bottom of multiple cooling pipes are all fixedly connected to discharge pipes at the end away from the cooling pipe, and the discharge pipe at the end away from the electromagnetic butterfly valve is fixedly connected to external equipment.

[0009] As a further improvement to this application, a connecting pipe can be optionally fixedly connected between the discharge pipe and the feed pipe, multiple through holes are evenly distributed around the axis of the magnetic refrigeration body, and multiple electromagnetic butterfly valves are electrically connected to the control module.

[0010] As a further improvement of this application, capillary pores are formed on the inner wall of the through hole to form a capillary heat transfer tube, and the volume of the evaporating heat transfer agent in each through hole does not exceed one-third of the volume of the through hole.

[0011] As another improvement of this application, the magnetic cooler is made of rare earth elements and their alloys. The magnetic cooler absorbs heat by adiabatic demagnetization under an external magnetic field and its temperature rises during the adiabatic magnetization process.

[0012] As a further improvement to this application, the evaporative heat transfer fluid is made of a low-boiling-point working fluid, which evaporates and flows upward when the temperature rises and condenses and flows back when the temperature falls.

[0013] As a further improvement to this application, the unidirectional cooling switch layer is made of polydiallyldimethylammonium chloride gel, and the unidirectional cooling switch layer has good thermal conductivity below the critical temperature and poor thermal conductivity above the critical temperature.

[0014] As another improvement of this application, the cold storage layer is made of paraffin wax, hydrated salt, porous ceramic or metal foam, and a thermocouple and a control module are fixedly connected to the top of the first cooling module, and heat dissipation fins are fixedly connected to the top of the thermocouple.

[0015] Includes the following steps;

[0016] S1. Introduce the material to be cooled;

[0017] S2, evaporative heat transfer;

[0018] S3. Magnetic cooler insulation and demagnetization, absorbing heat;

[0019] S4: The unidirectional cooling switch layer conducts heat, and the cold storage layer stores cold.

[0020] S5, cooling pipe cooling, electromagnetic butterfly valve controls the flow direction;

[0021] S6. The magnetic cooler is thermally magnetized, causing the temperature to rise.

[0022] S7, one-way cooling switch layer insulation;

[0023] S8, zoned alternating cooling, thermocouple power generation;

[0024] S9, continuously cooling in a cyclical manner.

[0025] In summary, this application has the following beneficial effects:

[0026] 1. Multi-stage series cooling achieves large temperature range and deep cooling: By using three cooling modules connected in series, the adiabatic magnetization heat release and adiabatic demagnetization heat absorption effects of the magnetic cooler in an external magnetic field are utilized to achieve large temperature difference cooling across room temperature to deep cold. Compared with single-stage cooling, multi-stage series cooling can improve the effective utilization rate of cooling capacity and reduce energy loss while achieving lower temperatures.

[0027] 2. Capillary evaporation technology enhances heat transfer and increases refrigeration power density. Capillary channels filled with a low-boiling-point working fluid are created within the magnetic refrigeration body, utilizing the latent heat of phase change to achieve rapid heat transfer between the inside and outside of the magnetic refrigeration body. The evaporation-condensation cycle makes the temperature rise and fall of the magnetic refrigeration body more rapid, increasing the refrigeration power per unit volume or unit mass of magnetic refrigeration material, while reducing the size and weight of the device.

[0028] 3. Thermoelectric power generation technology enables cascaded energy utilization; the temperature difference between the magnetic refrigeration bodies of different cooling modules is converted into electrical energy, which can power the control system and reduce external energy input; on the other hand, it also plays a role in active heat dissipation and suppresses irreversible losses in the cooling process; waste heat recovery power generation improves system energy efficiency and reduces the production cost of liquor.

[0029] 4. Thermal conductivity switch technology suppresses reverse heat transfer and improves cold storage effect; temperature-responsive polymer gel is used as the thermal conductivity switch layer, which conducts heat rapidly during the cooling stage of the magnetic cooler and effectively insulates heat during the heating stage, avoiding the loss of cold energy in the cold storage layer and extending the effective cooling time. The asymmetric heat transfer characteristics of the thermal conductivity switch improve the cold storage density and cold storage efficiency.

[0030] 5. Phase change cold storage technology smooths temperature fluctuations and achieves continuous cooling; using solid-liquid phase change materials such as paraffin and hydrated salt as cold storage media, the temperature remains constant during the phase change process, which can provide continuous cooling output for intermittent magnetic refrigeration. The large latent heat phase change cold storage overcomes the fluctuation of magnetic refrigeration capacity, making the output cooling capacity more stable and meeting the process requirements of liquor production.

[0031] 6. Zoned alternating cooling ensures continuous and stable cooling output; the three cooling modules start cooling sequentially at staggered times, so that at any given moment there are always two modules cooling and one module heating, achieving quasi-continuous cooling output. Zoned alternating cooling reduces fluctuations in cooling load and improves the accuracy and stability of temperature control.

[0032] 7. Compared with compression refrigeration, magnetic refrigeration is more environmentally friendly. As a solid refrigerant, magnetic refrigerant does not require greenhouse gases such as Freon, does not cause ozone layer depletion or greenhouse effect, and has no noise or vibration pollution. It meets the sustainable development requirements of the liquor industry. At the same time, magnetic refrigeration materials can be reused, have a long refrigeration cycle life, and reduce the amount of refrigerant used and the cost of disposal.

[0033] 8. Modular design, easy to integrate, expand and intelligently control; Adopting a standardized and modular design concept, each cooling module can be flexibly disassembled and combined, making it easy to customize the cooling capacity and match the cooling temperature according to different scales of liquor production lines. At the same time, sensing, control, drive and communication functions are integrated into the control module, realizing automatic monitoring and adjustment of the refrigeration process, improving the intelligence level and reliability of the device.

[0034] 9. Magnetic refrigeration devices have high reliability and low maintenance costs. As the core of solid-state refrigeration, the magnetic refrigeration element has no frequently moving parts, resulting in a low probability of failure and leakage, and a long service life. Passive cooling elements such as capillary tubes and phase change materials have simple structures, mature manufacturing processes, and stable and reliable performance. Modular assembly simplifies daily maintenance and repair, reducing maintenance costs and downtime. Attached Figure Description

[0035] Figure 1 This is a diagram illustrating the overall structure of this application;

[0036] Figure 2 For the purposes of this application Figure 1 Enlarged view of point A in the middle;

[0037] Figure 3 This is a side view of this application;

[0038] Figure 4 For the purposes of this application Figure 3 BB section view;

[0039] Figure 5 This is an exploded view of the entire application;

[0040] Figure 6 For the partial structure of this application Figure 1 ;

[0041] Figure 7 For the partial structure of this application Figure 2 ;

[0042] Figure 8 For the partial structure of this application Figure 3 ;

[0043] Figure 9 For the partial structure of this application Figure 4 ;

[0044] Figure 10 This is a structural diagram of the appearance of this application.

[0045] Explanation of the labels in the diagram:

[0046] 1. Magnetic cooling element; 2. Through hole; 3. Control coil; 4. Thermocouple; 5. Control module; 6. Evaporating heat transfer agent; 7. One-way cooling switch layer; 8. Cold storage layer; 9. Cooling pipe; 10. Electromagnetic butterfly valve; 11. Feed pipe; 12. Discharge pipe; 13. Connecting pipe. Detailed Implementation

[0047] The three embodiments of this application will now be described in detail with reference to the accompanying drawings.

[0048] First implementation method:

[0049] Figures 1-10 As shown.

[0050] A cooling device and method for liquor production includes a plurality of first cooling modules, second cooling modules, and third cooling modules that are fixedly connected in sequence. Each of the first, second, and third cooling modules includes a magnetic cooler 1. The magnetic cooler 1 has a plurality of through holes 2. A control coil 3 is wound and fixedly connected to the outer end of the magnetic cooler 1. A thermocouple 4 is fixedly connected to the bottom end of the magnetic cooler 1. A control module 5 is fixedly connected to the outer end of the thermocouple 4. Each of the through holes 2 is filled with an evaporative heat-conducting agent 6. A unidirectional cooling switch layer 7 is fixedly connected to the outer end of the control coil 3. A cold storage layer 8 is fixedly connected to the outer end of the unidirectional cooling switch layer 7. A cooling pipe 9 is wound around the outer end of the cold storage layer 8. Electromagnetic butterfly valves 10 are fixedly connected to both ends of the cooling pipe 9. The thermocouple 4 of the second and third cooling modules is fixedly connected to the bottom end of the magnetic cooler 1 of the first and second cooling modules, respectively.

[0051] The core component of each cooling module is a magnetic cooler 1, which is made of rare earth elements such as gadolinium and dysprosium and their alloys, such as Gd, Gd-Si-Ge, LaFe, Si13, etc. The magnetic cooler 1 is cylindrical and has multiple through holes 2 evenly distributed along the axial direction inside, which are used to fill the evaporative heat transfer fluid 6. The evaporative heat transfer fluid 6 is selected from low boiling point working fluids such as ammonia, propane, butane, and R134a. The inner wall of the through holes 2 has a capillary structure, which forms a capillary heat transfer mechanism with the evaporative heat transfer fluid 6.

[0052] The outer surface of the magnetic cooler 1 is wound with a control coil 3, which is made of enameled copper wire or superconducting wire. By applying a periodically changing magnetic field through the control coil 3, the magnetic cooler 1 is driven to alternately magnetize and demagnetize under adiabatic conditions, thereby realizing a cooling cycle.

[0053] A thermocouple 4 is fixedly connected to the bottom of the magnetic cooler 1. It is made of thermoelectric materials with high Seebeck coefficients, such as bismuth telluride alloy and bismuth selenide. The cold end of the thermocouple 4 is in contact with the magnetic cooler 1, and the hot end is connected to the control module 5. The thermocouple 4 generates electricity by utilizing the temperature difference between the magnetic cooler 1 and other components to power the control module 5.

[0054] The control module 5 integrates components such as temperature sensor, magnetic field sensor, power management circuit, and control algorithm chip to realize automatic monitoring and regulation of the cooling process. According to the preset control strategy, the control module 5 adjusts the energizing timing and current of the control coil 3 in real time, optimizes the magnetic field change curve, and matches the thermodynamic characteristics of the magnetic refrigeration material to achieve the best cooling effect.

[0055] Outside the magnetic cooler 1 and the thermocouple 4, there is a one-way heat conduction switch layer 7. This layer is made of polydiallyldimethylammonium chloride gel material, which has special temperature response characteristics. When the temperature is below the critical temperature, the gel is in an expanded state and has good thermal conductivity. When the temperature is above the critical temperature, the gel undergoes phase separation and the thermal conductivity decreases. The reversible thermal conductivity-insulation transition helps to achieve one-way heat conduction control between the magnetic cooler 1 and the cold storage layer 8.

[0056] The cold storage layer 8 is closely attached to the outside of the unidirectional cooling switch layer 7 and is composed of solid-liquid phase change materials such as paraffin and hydrated salt. When the magnetic cooler 1 is in a cooling state, the cold storage layer 8 absorbs its cold energy, undergoes a phase change, and stores cold energy. When the magnetic cooler 1 is in a heating state, the cold storage layer 8 maintains a constant phase change temperature and slows down the loss of cold energy.

[0057] The outermost layer is a coiled cooling pipe 9, in which liquid wine or wine vapor flows and exchanges heat with the cold storage layer 8, thereby achieving cooling. Each inlet and outlet of the cooling pipe 9 is connected to an electromagnetic butterfly valve 10, which is controlled by the control module 5 to open and close, and to adjust the flow rate and direction of the cooling medium.

[0058] The three cooling modules are interlocked and fixedly connected in sequence. Between each pair of adjacent cooling modules, the thermocouple 4 of the latter cooling module is connected to the bottom of the magnetic cooler 1 of the former cooling module. This cascaded arrangement can increase the temperature difference of the entire device and improve the power generation efficiency of the thermocouple 4. In addition, the top of the first cooling module is also equipped with an additional thermocouple 4 and heat dissipation fins to dissipate the waste heat of the system.

[0059] The combination of magnetic refrigeration element 1 and capillary heat transfer technology improves refrigeration efficiency. The evaporative heat-conducting agent 6 filled in the through hole 2 circulates rapidly with the help of capillary force during the heat absorption evaporation and heat release condensation processes, which accelerates the heat transfer inside the magnetic refrigeration element 1 and improves the refrigeration power density.

[0060] The waste heat power generation of the thermocouple 4 recovery system realizes the cascade utilization of energy. On the one hand, the thermocouple 4 consumes the temperature difference between the magnetic cooler 1 and other components, suppressing irreversible losses in the cooling process; on the other hand, the electrical energy generated by the thermocouple 4 can directly drive low-power devices such as the control module 5, simplifying the system structure and improving energy utilization efficiency.

[0061] The unidirectional cooling switch layer 7 and the cold storage layer 8 work together to achieve efficient storage and release of cold energy. The unidirectional cooling switch layer 7 only allows cold energy to be transferred unidirectionally from the magnetic cooler 1 to the cold storage layer 8, while isolating the cold storage layer 8 from heat dissipation. The cold storage layer 8 uses a phase change material with a large specific heat capacity and high cold energy storage density, which can maintain a stable temperature inside the cooling pipe 9 when the cooling capacity of the magnetic cooler 1 fluctuates.

[0062] The cooling pipe 9 works in conjunction with the electromagnetic butterfly valve 10 to flexibly regulate the output of cooling capacity. By controlling the opening and closing sequence of the electromagnetic butterfly valve 10 of different cooling modules, multiple cooling modes such as parallel, series, and time-sharing can be realized to meet the cooling needs of different batches and stages of wine. At the same time, the electromagnetic butterfly valve 10 can also be adjusted in real time according to temperature and flow feedback to ensure that the cooling capacity output is precisely matched with the load demand and prevent overcooling or undercooling.

[0063] The modular and integrated design makes it easy to expand and maintain. The three cooling modules have similar structures and can be mass-produced. They can be flexibly spliced ​​through standardized interfaces. Whether it is to increase the cooling capacity of a single device or to build a cooling system with multiple units in parallel, it can be achieved at a low cost. At the same time, the control module 5 integrates sensing, control, drive and communication functions, which simplifies the peripheral circuit and improves the system reliability.

[0064] Compared with compression refrigeration, magnetic refrigeration 1 achieves all-solid-state refrigeration, with no greenhouse gas emissions such as Freon, low noise, and high reliability. Moreover, by generating electricity through cascaded thermocouples 4, the magnetic refrigeration process can reduce its dependence on external power, thus achieving energy saving and emission reduction effects.

[0065] Second implementation method:

[0066] Figures 1-10 As shown.

[0067] The electromagnetic butterfly valves 10 at the top of multiple cooling pipes 9 are fixedly connected to the same feed pipe 11 at the end away from the cooling pipes 9. The end of the feed pipe 11 away from the electromagnetic butterfly valves 10 is fixedly connected to external equipment.

[0068] Each of the electromagnetic butterfly valves 10 at the bottom of multiple cooling pipes 9 is fixedly connected to a discharge pipe 12 at the end away from the cooling pipe 9. The end of the discharge pipe 12 away from the electromagnetic butterfly valve 10 is fixedly connected to an external device.

[0069] A connecting pipe 13 can be optionally fixedly connected between the discharge pipe 12 and the feed pipe 11. Multiple through holes 2 are evenly distributed around the axis of the magnetic refrigeration body 1. Multiple electromagnetic butterfly valves 10 are electrically connected to the control module 5.

[0070] The inner wall of the through hole 2 is provided with capillary pores to form a capillary heat transfer tube. The volume of the evaporating heat transfer agent 6 in each through hole 2 shall not exceed one-third of the volume of the through hole 2.

[0071] The magnetic cooler 1 is made of rare earth elements and their alloys. Under an external magnetic field, the magnetic cooler 1 absorbs heat through adiabatic demagnetization and its temperature rises during the adiabatic magnetization process.

[0072] The evaporative heat transfer agent 6 is made of a low-boiling-point working fluid. When the temperature rises, the evaporative heat transfer agent 6 evaporates and flows upward, and when the temperature drops, it condenses and flows back.

[0073] The unidirectional cooling switch layer 7 is made of polydiallyldimethylammonium chloride gel. The unidirectional cooling switch layer 7 has good thermal conductivity below the critical temperature and poor thermal conductivity above the critical temperature.

[0074] The cold storage layer 8 is made of paraffin, hydrated salt, porous ceramic or metal foam. The top of the first cooling module is fixedly connected to a thermocouple 4 and a control module 5, and the top of the thermocouple 4 is fixedly connected to a heat dissipation fin.

[0075] The electromagnetic butterfly valves 10 at the top of multiple cooling pipes 9 are connected to the same feed pipe 11 through pipelines. The other end of the feed pipe 11 is connected to external equipment, such as a wine storage tank or a wine vapor generator, which can realize centralized supply and distribution of cooling medium. By controlling the opening of each electromagnetic butterfly valve 10, the flow rate of cooling medium entering each cooling pipe 9 can be flexibly adjusted to achieve zone control and balanced supply. At the same time, centralized supply also simplifies pipeline layout, reduces the use of connecting parts, and improves the reliability and compactness of the system.

[0076] It enables centralized supply and distribution of cooling medium, simplifies pipeline layout, and achieves zoned control and balanced supply through the control of electromagnetic butterfly valve 10, thereby improving system reliability and compactness and reducing the use of connecting parts.

[0077] Similar to the feed pipe 11, the electromagnetic butterfly valves 10 at the bottom of the multiple cooling pipes 9 are connected to their respective independent discharge pipes 12 via pipelines. The other end of each discharge pipe 12 is connected to external equipment, such as subsequent cooling modules, wine storage tanks, or alcohol recovery devices, which can realize the zoned collection and discharge of cooling media. By controlling the opening of each electromagnetic butterfly valve 10, the discharge rate of each cooling pipe 9 can be flexibly adjusted to achieve zoned control and differentiated discharge. The independent discharge pipes 12 can also prevent mutual interference between different cooling modules and improve the control accuracy and stability of the system.

[0078] The system enables zoned collection and discharge of cooling media, improving control precision. By controlling the electromagnetic butterfly valve 10, it achieves zoned control and differentiated discharge, preventing mutual interference between different cooling modules and improving system stability.

[0079] An optional connecting pipe 13 is provided between the discharge pipe 12 and the feed pipe 11 to realize the recycling of the cooling medium. A control valve is installed on the connecting pipe 13, which can be flexibly opened or closed according to process requirements. When multiple cycles of cooling of the cooling medium are required, the connecting pipe 13 is opened to introduce the cooling medium in the discharge pipe 12 into the feed pipe 11 to achieve closed-loop circulation; when a single cooling of the cooling medium is required, the connecting pipe 13 is closed to discharge the cooling medium in the discharge pipe 12 from the system.

[0080] The through holes 2 on the magnetic cooler 1 are evenly distributed along the axial direction, which helps to increase the contact area between the evaporating heat transfer agent 6 and the magnetic cooler 1 and enhance the heat transfer effect; it also helps to achieve the uniform distribution of the evaporating heat transfer agent 6 in the through holes 2 and avoid local overheating or overcooling.

[0081] All electromagnetic butterfly valves 10 are electrically connected to the control module 5 and receive its control signals. The control module 5 sends switching commands and opening degree adjustment commands to the electromagnetic butterfly valves 10 according to the preset program or sensor feedback, so as to realize the automatic control of the cooling medium flow rate.

[0082] The connecting pipe 13 enables the recycling of the cooling medium, improving energy efficiency. The uniform distribution of the through holes 2 enhances heat transfer and avoids local overheating or overcooling. The electromagnetic butterfly valve 10 is electrically connected to the control module 5 to achieve automatic flow control.

[0083] Numerous micro-capillary pores are formed on the inner wall of the through hole 2, forming a capillary heat transfer tube. The diameter of the capillary pores is usually 0.01-1 mm, and the porosity is 30%-80%. The capillary pores use capillary force to promote the circulation of the evaporating heat transfer agent 6, accelerating the transfer of heat from the inside of the magnetic cooler 1 to the outside. At the same time, the capillary pores can also prevent the evaporating heat transfer agent 6 from accumulating in the through hole 2, forming an airlock, and hindering heat transfer.

[0084] The volume of the evaporative heat transfer fluid 6 filled in each through hole 2 does not exceed 1 / 3 of the through hole volume. This filling ratio ensures heat transfer while providing sufficient space for the evaporation and condensation of the evaporative heat transfer fluid 6. Excessive filling will cause the evaporative heat transfer fluid 6 to overflow in the through hole 2, affecting the efficiency of the capillary heat transfer tube; insufficient filling will reduce the heat transfer power and result in poor cooling effect.

[0085] The capillary pores increase the circulation speed of the evaporative heat transfer agent 6, enhancing the heat transfer effect. The capillary pores also prevent the evaporative heat transfer agent 6 from accumulating and locking up, ensuring smooth heat transfer. The 1 / 3 filling ratio balances heat transfer efficiency and phase change space, maximizing cooling performance.

[0086] The magnetic cooler 1 is made of rare earth elements such as gadolinium and dysprosium and their alloys. Common magnetic cooler materials include Gd, Gd-Si-Ge, LaFe, Si13, etc. These materials have Curie temperatures close to room temperature and significant magnetocaloric effects, making them suitable for achieving large temperature span refrigeration at room temperature.

[0087] When the magnetic cooler 1 is adiabatically demagnetized under an external magnetic field, the magnetic moment orientation becomes random and the magnetic entropy increases. To maintain entropy balance, the lattice absorbs heat, the temperature drops, and it cools the surrounding environment. When the external magnetic field is removed, the magnetic cooler 1 is adiabatically magnetized, the magnetic moment is reoriented, the magnetic entropy decreases, the lattice releases heat, and the temperature rises. This reversible magnetocaloric effect of the magnetic cooler 1 during the demagnetization and magnetization process is the basis of magnetic refrigeration technology.

[0088] Rare earth magnetic refrigeration materials have a moderate Curie temperature and a strong magnetocaloric effect, making them suitable for refrigeration over a wide temperature range at room temperature. The magnetic refrigeration body 1 can reversibly absorb heat through adiabatic demagnetization and release heat through adiabatic magnetization in an external magnetic field, thus achieving a refrigeration cycle.

[0089] The evaporative heat transfer agent 6 uses low-boiling-point working fluids such as ammonia, propane, butane, and R134a. These working fluids liquefy at room temperature and vaporize when heated by the magnetic cooler 1. The phase change heat transfer mode of the evaporative heat transfer agent 6 is as follows: when the magnetic cooler 1 absorbs heat by adiabatic demagnetization, the evaporative heat transfer agent 6 in the through hole 2 absorbs heat and vaporizes, expanding in volume. Under the action of capillary force and pressure difference, the vaporized evaporative heat transfer agent 6 moves rapidly upward to the through hole 2, carrying away a large amount of heat. When it reaches the condensation section, the evaporative heat transfer agent 6 liquefies upon cooling, releasing latent heat, which raises the temperature of the condensation section. The liquefied evaporative heat transfer agent 6 flows back to the bottom of the through hole 2 under the action of gravity, completing one cycle.

[0090] When the magnetic cooler 1 is adiabatic magnetized and releases heat, the heat transfer agent 6 evaporates rapidly, the temperature of the condensation section drops, a large amount of latent heat is absorbed, which cools the evaporation section. The cycle of evaporation-condensation-reflux is repeated, and heat is continuously extracted.

[0091] The low-boiling-point working fluid vaporizes at the hot end and liquefies at the cold end of the magnetic cooler 1. It utilizes the latent heat of phase change for rapid heat transfer. The evaporated heat transfer agent 6 circulates under the action of capillary force, pressure difference, and gravity, resulting in continuous heat transfer. The phase change heat transfer efficiency is high, the heat transfer temperature difference is small, and the heat exchange inside and outside the magnetic cooler 1 is significantly enhanced.

[0092] The unidirectional cooling switch layer 7 is made of polydiallyldimethylammonium chloride gel. This gel has unique temperature response characteristics. Below the critical temperature, the gel is hydrophilic, the molecular chains extend, the thermal conductivity is high, and heat can easily pass through. Above the critical temperature, the gel is hydrophobic, the molecular chains shrink, the thermal conductivity decreases, and heat is difficult to pass through.

[0093] Utilizing this temperature response characteristic, the unidirectional cooling switch layer 7 can promote heat exchange between the magnetic cooler 1 and the cold storage layer 8 when the magnetic cooler 1 is cooling; and when the magnetic cooler 1 is heating, it can block heat transfer between the two, preventing the cold storage layer 8 from heating up too early, which is beneficial to improving the cold storage efficiency and extending the cooling time.

[0094] The thermal conductivity of the temperature-sensitive gel material changes with temperature, enabling unidirectional control of heat flow. The unidirectional cooling switch layer 7 only allows cold energy to flow from the magnetic cooler 1 to the cold storage layer 8, while isolating reverse heat flow, thereby improving cold storage efficiency, extending cooling time, and reducing energy consumption.

[0095] The cold storage layer 8 is made of solid-liquid phase change materials such as paraffin and hydrated salt, or materials with large specific surface area such as porous ceramics and metal foam. The phase change material absorbs and releases a large amount of latent heat during the phase change process, resulting in high cold storage density. The porous material has high internal porosity, and after being combined with the phase change material, it has a large heat transfer area and good heat transfer effect.

[0096] When the magnetic cooler 1 is in a cooling state, the cold storage layer 8 absorbs its cold energy, undergoes a solid-liquid phase change or sensible heat cooling, and the temperature drops. When the magnetic cooler 1 stops cooling, the cold storage layer 8 releases its cold energy. The latent heat of phase change or sensible heat maintains the low temperature of the cooling pipe 9 and slows down the rise of the cooling temperature. The addition of the cold storage layer 8 can significantly improve the continuity and stability of cooling.

[0097] The first cooling module is connected to an additional thermocouple 4 and a control module 5 at its top. The thermocouple 4 is connected to a heat sink fin at its top. The thermocouple 4 generates electricity by utilizing the temperature difference between the first cooling module and the environment to power the control module 5. The heat sink fin increases the heat exchange area between the hot end of the thermocouple 4 and the environment, enhances heat dissipation, and improves the temperature difference and power generation efficiency. At the same time, the heat sink fin also helps the entire device dissipate heat to the environment and reduce the average temperature.

[0098] The cold storage layer 8, made of phase change material or porous material, improves the cold storage density and heat transfer effect. The cold storage layer 8 continuously releases cold during the cooling interval of the magnetic refrigeration body 1, thereby improving the continuity and stability of cooling. The thermocouple 4 at the top and the heat dissipation fins generate electricity using the temperature difference to power the control module 5. The heat dissipation fins enhance heat dissipation, improve the power generation efficiency of the thermocouple 4, and reduce the average temperature of the device.

[0099] The third implementation method:

[0100] Figures 1-10 As shown.

[0101] Includes the following steps;

[0102] S1. Introduce the material to be cooled;

[0103] One end of the feed pipe 11 is connected to the liquor storage tank or liquor vapor generator on the liquor production line, and the other end is connected to the inlet of the cooling pipe 9 of each cooling module through a pipeline and a solenoid butterfly valve 10. The main control valve on the feed pipe 11 is opened to introduce the liquor or liquor vapor to be cooled into the feed pipe 11. According to the requirements of the liquor production process, the feed pressure and flow rate are controlled. By adjusting the pressure regulating valve and flow regulating valve on the feed pipe 11, the feed pressure and flow rate are stabilized at the set values. At the same time, the feed temperature is monitored to ensure that it is within a suitable range to meet the feed requirements of the magnetic refrigeration device. According to the changes in the refrigeration load, the valve opening of the feed pipe 11 is adjusted in real time to optimize the feed rate. When the refrigeration load increases, the feed rate is appropriately increased; when the refrigeration load decreases, the feed rate is appropriately decreased to save energy. The liquor or liquor vapor in the feed pipe 11 is filtered and purified to remove impurities and suspended matter to prevent blockage of the cooling pipe 9 and affect the heat exchange effect.

[0104] S2, evaporative heat transfer;

[0105] After the liquid wine or wine vapor to be cooled enters the cooling pipe 9, it comes into contact with the pipe wall and transfers heat to the cold storage layer 8. The heat in the cold storage layer 8 is further transferred to the magnetic cooler 1 through the one-way cold conduction switch layer 7. The evaporative heat transfer agent 6 filled in the through hole 2 absorbs the heat from the magnetic cooler 1, and its temperature rises rapidly. When it reaches its boiling point, it begins to vaporize, forming high-pressure steam. After the evaporative heat transfer agent 6 vaporizes, its volume expands, creating a large pressure difference in the through hole 2. Under the combined action of the pressure difference and capillary force, the steam rapidly rises to the upper end of the through hole 2. The movement carries away a large amount of heat. When the vapor of the evaporating heat transfer agent 6 reaches the condensation section at the upper end of the through hole 2, it comes into contact with the thermocouple 4 and transfers heat to the thermocouple 4. Its own temperature drops and condensation occurs. After condensation, the evaporating heat transfer agent 6 flows down along the inner wall of the through hole 2 under the action of gravity and capillary force, and returns to the bottom of the through hole 2, completing one cycle. Through the phase change cycle of the evaporating heat transfer agent 6, the heat inside the magnetic cooler 1 is continuously and efficiently transferred to the thermocouple 4, realizing the rapid cooling of the magnetic cooler 1.

[0106] S3, magnetic cooler 1 insulates and demagnetizes, absorbing heat;

[0107] By cutting off the current to the control coil 3 through the control module 5, the coil wound around the magnetic cooler 1 is in a non-current state, and the magnetic cooler 1 can no longer sense the external magnetic field. Under adiabatic conditions, the magnetic domains inside the magnetic cooler 1 begin to demagnetize spontaneously, the magnetic moment direction becomes random and disordered, and the magnetization intensity decreases. During the demagnetization process, the magnetic entropy of the magnetic cooler 1 increases. In order to maintain entropy balance, the system needs to absorb heat from the environment, and the temperature of the magnetic cooler 1 begins to drop. The temperature drop of the magnetic cooler 1 reduces the temperature of the surrounding medium, such as the cold storage layer 8 and the one-way cooling switch layer 7, through the heat conduction mechanism. On the other hand, it also provides a cold source for the vaporization of the heat transfer agent 6 and accelerates the heat exchange cycle in the through hole 2. By adjusting the on and off time and frequency of the control coil 3, the demagnetization speed and cooling amplitude of the magnetic cooler 1 can be controlled to match the cooling load of the liquid.

[0108] S4, unidirectional cooling switch layer 7 conducts heat, and cold storage layer 8 stores cold;

[0109] After the evaporating heat transfer agent 6 removes the heat from the magnetic cooler 1, it transfers the heat to the unidirectional cooling switch layer 7. When the temperature of the unidirectional cooling switch layer 7 is below the critical temperature, the polydiallyldimethylammonium chloride gel is in a hydrophilic expansion state, the molecular chains extend, forming a continuous heat conduction path with high thermal conductivity. Heat can be quickly conducted from the magnetic cooler 1 side to the cold storage layer 8 side. After the cold storage layer 8 absorbs the heat transferred from the unidirectional cooling switch layer 7, the internal phase change materials such as paraffin and hydrated salts begin to undergo a solid-liquid phase change, and the temperature remains constant. During the heat absorption and melting process, the phase change materials continuously absorb heat and store it as latent heat, playing the role of cold storage. By selecting different phase change materials such as octadecane and stearic acid, the phase change temperature and cold storage capacity of the cold storage layer 8 can be adjusted to match the working conditions of the magnetic cooler 1. In addition, high thermal conductivity materials such as expanded graphite and metal foam can be added inside the cold storage layer 8 to form a composite phase change material, improve its thermal conductivity, and accelerate the absorption and release of cold energy.

[0110] S5, cooling pipe 9 provides cooling, and electromagnetic butterfly valve 10 controls the flow direction;

[0111] After the first cooling module completes the predetermined cold storage time, the control module 5 issues a command to open the electromagnetic butterfly valve 10 at the inlet of the cooling pipe 9 of the module. The liquor or liquor vapor to be cooled enters the cooling pipe 9 of the first cooling module under the pressure in the feed pipe 11. The cooling pipe 9 adopts a coil or spiral arrangement and is in full contact with the cold storage layer 8. When the liquor or liquor vapor flows in the pipe, it exchanges heat with the pipe wall and transfers heat to the cold storage layer 8, and its own temperature drops rapidly. By controlling the flow rate and residence time of the liquor or liquor vapor in the cooling pipe 9, its cooling rate and cooling temperature can be adjusted. When the temperature of the liquor or liquor vapor drops to the predetermined value, the control module 5 opens the electromagnetic butterfly valve 10 at the outlet of the cooling pipe 9. The cooled liquor or liquor vapor enters the discharge pipe 12 through the electromagnetic butterfly valve 10 at the outlet, and then flows to the next cooling module or the subsequent equipment of the liquor production line. By coordinating the opening and closing sequence of the electromagnetic butterfly valves 10 of each cooling module, the continuous flow and step-by-step cooling of the liquor or liquor vapor between different modules can be achieved until the final target temperature is reached.

[0112] S6. The magnetic cooler 1 is thermally magnetized, and the temperature rises.

[0113] After the first cooling module completes its cooling output for a certain period of time, the timer in the control module 5 issues a magnetization command, energizing the control coil 3. The energized control coil 3 forms a magnetic field outside the magnetic cooler 1. Under the action of the external magnetic field, the magnetic domains inside the magnetic cooler 1 begin to align, the magnetization intensity increases rapidly, and the magnetic entropy decreases. To maintain entropy balance, the magnetic cooler 1 system releases heat outward, and its own temperature begins to rise. The rate and magnitude of the temperature rise depend on the magnetic field strength and the magnetization time. The temperature rise of the magnetic cooler 1 during the adiabatic magnetization process is equal to the temperature drop during the adiabatic demagnetization process. The temperature rise of the magnetic cooler 1 provides initial conditions for the next cooling cycle. On the other hand, the high temperature also promotes the vaporization and circulation of the evaporating heat transfer agent 6, accelerating the heat transfer within the through hole 2. By adjusting the current and energizing time of the control coil 3, the magnetization rate and temperature rise of the magnetic cooler 1 can be controlled to match the phase change cycle of the evaporating heat transfer agent 6.

[0114] S7, one-way cooling switch layer 7 insulation;

[0115] After the magnetic cooler 1 is adiabatically magnetized, its temperature rises rapidly and is transferred to the unidirectional cooling switch layer 7 through heat conduction. When the temperature of the unidirectional cooling switch layer 7 exceeds the critical temperature, the internal polydiallyldimethylammonium chloride gel undergoes hydrophobic shrinkage, the molecular chains collapse, and an isolated hydrophobic region is formed. The heat conduction path is cut off, and the thermal conductivity is significantly reduced. The unidirectional cooling switch layer 7, with its deteriorated thermal conductivity, blocks the heat transfer from the magnetic cooler 1 to the cold storage layer 8, thus playing a role in heat insulation. Heat is difficult to transfer from the magnetic cooler 1. At this time, the heat from the magnetic cooler 1 is transferred to the thermocouple 4 through the evaporating thermal conductive agent 6. By adjusting the molecular structure and additives of the polydiallyldimethylammonium chloride gel, the variation range of its critical response temperature and thermal conductivity can be optimized, so that the heat insulation performance of the unidirectional cooling switch layer 7 is adapted to the magnetic refrigeration cycle. The reversible thermal insulation characteristics of the unidirectional cooling switch layer 7 can effectively suppress the heat coupling between the magnetic cooler 1 and the cold storage layer 8, reduce irreversible losses in the refrigeration process, and improve the magnetic refrigeration efficiency.

[0116] S8, zoned alternating cooling, thermocouple 4 power generation;

[0117] The three cooling modules sequentially perform adiabatic demagnetization cooling and adiabatic magnetization heating. The switching between modules is automatically controlled by the control module 5 according to preset time parameters. When the first cooling module completes cooling and begins heating, the second cooling module begins cooling; when the second cooling module completes cooling and begins heating, the third cooling module begins cooling, and so on, forming a continuous cooling output. During this process, the magnetic cooling element 1 of the module in cooling mode has a lower temperature, while the magnetic cooling element 1 of the module in heating mode has a higher temperature, creating a significant temperature difference. One end of the thermocouple 4 is connected to the magnetic cooling element of the low-temperature module. One end is connected to body 1, and the other end is connected to the magnetic refrigeration body 1 of the high-temperature module. Under the action of temperature difference, the thermocouple 4 generates an electromotive force and outputs current. The electrical energy generated by the thermocouple 4 can directly power the control module 5, or it can be AC / DC converted and boosted to power other electrical equipment. By optimizing the operating sequence of each module and the connection method of the thermocouple 4, the thermoelectric power generation can be maximized and the energy utilization efficiency of the magnetic refrigeration system can be improved. The zoned power generation method of the thermocouple 4 can convert the waste heat generated by the magnetic refrigeration body 1 into useful electrical energy, playing the role of waste heat recovery and energy cascade utilization.

[0118] S9, continuous cooling in a cyclical manner;

[0119] Under the automatic control of control module 5, the three cooling modules periodically perform adiabatic demagnetization refrigeration and adiabatic magnetization heating according to predetermined time parameters, forming a continuous refrigeration cycle. By coordinating and controlling the operating rhythm of each module, the system can always have two modules in the refrigeration state, ensuring a continuous supply of cold to the wine.

[0120] In light of current practical needs, the above-described embodiments adopted in this application are not limited to these. Any changes made within the scope of knowledge possessed by those skilled in the art without departing from the concept of this application still fall within the protection scope of this invention.

Claims

1. A cooling device and method for producing baijiu (Chinese liquor), characterized in that: The system includes multiple sequentially fixedly connected first, second, and third cooling modules. Each of these modules includes a magnetic cooler (1). The magnetic cooler (1) has multiple through holes (2). A control coil (3) is wound and fixedly connected to the outer end of the magnetic cooler (1). A thermocouple (4) is fixedly connected to the bottom end of the magnetic cooler (1). A control module (5) is fixedly connected to the outer end of the thermocouple (4). The multiple through holes (2) 2) The inner part is filled with evaporative heat-conducting agent (6). The outer end of the control coil (3) is fixedly connected to a one-way cooling switch layer (7). The outer end of the one-way cooling switch layer (7) is fixedly connected to a cold storage layer (8). The outer end of the cold storage layer (8) is wound with a cooling pipe (9). Both ends of the cooling pipe (9) are fixedly connected to electromagnetic butterfly valves (10). Thermocouples (4) of the second cooling module and the third cooling module are fixedly connected to the bottom ends of the magnetic cooler (1) of the first cooling module and the second cooling module, respectively.

2. The cooling device and method for liquor production according to claim 1, characterized in that: The electromagnetic butterfly valves (10) at the top of the multiple cooling pipes (9) are fixedly connected to the same feed pipe (11) at the end away from the cooling pipe (9), and the feed pipe (11) at the end away from the electromagnetic butterfly valve (10) is fixedly connected to an external device.

3. The cooling device and method for liquor production according to claim 1, characterized in that: Each of the electromagnetic butterfly valves (10) at the bottom of the multiple cooling pipes (9) is fixedly connected to a discharge pipe (12) at the end away from the cooling pipe (9), and the end of the discharge pipe (12) away from the electromagnetic butterfly valve (10) is fixedly connected to an external device.

4. The cooling device and method for liquor production according to claim 3, characterized in that: A connecting pipe (13) can be optionally fixedly connected between the discharge pipe (12) and the feed pipe (11). Multiple through holes (2) are evenly distributed around the axis of the magnetic refrigeration body (1). Multiple electromagnetic butterfly valves (10) are electrically connected to the control module (5).

5. The cooling device and method for liquor production according to claim 1, characterized in that: The inner wall of the through hole (2) is provided with capillary pores to form a capillary heat transfer tube. The volume of the evaporating heat transfer agent (6) in each through hole (2) shall not exceed one-third of the volume of the through hole (2).

6. The cooling device and method for liquor production according to claim 1, characterized in that: The magnetic cooler (1) is made of rare earth elements and their alloys. The magnetic cooler (1) absorbs heat by adiabatic demagnetization under an external magnetic field and its temperature rises during the adiabatic magnetization process.

7. The cooling device and method for liquor production according to claim 1, characterized in that: The evaporative heat transfer agent (6) is made of a low-boiling-point working fluid. The evaporative heat transfer agent (6) evaporates and flows upward when the temperature rises and condenses and flows back when the temperature falls.

8. The cooling device and method for liquor production according to claim 1, characterized in that: The unidirectional cooling switch layer (7) is made of polydiallyl dimethylammonium chloride gel. The unidirectional cooling switch layer (7) has good thermal conductivity below the critical temperature and poor thermal conductivity above the critical temperature.

9. A cooling device and method for liquor production according to claim 1, characterized in that: The cold storage layer (8) is made of paraffin, hydrated salt, porous ceramic or metal foam. The top of the first cooling module is fixedly connected to a thermocouple (4) and a control module (5), and the top of the thermocouple (4) is fixedly connected to a heat dissipation fin.

10. A cooling device and method for producing baijiu (Chinese liquor) according to any one of claims 1-9, characterized in that: Includes the following steps; S1. Introduce the material to be cooled; S2, evaporative heat transfer; S3, magnetic cooler (1) heat insulation and demagnetization, absorbing heat; S4, One-way cooling switch layer (7) conducts heat, cold storage layer (8) stores cold; S5, cooling pipe (9) for cooling, electromagnetic butterfly valve (10) for flow direction control; S6, magnetic cooler (1) is thermally magnetized, and the temperature rises; S7, One-way cooling switch layer (7) insulation; S8, alternating cooling in zones, thermocouple (4) generates electricity; S9, continuously cooling in a cyclical manner.

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