Temperature adjusting system and method in spreading and airing process

Abstract

The invention relates to a temperature adjusting system and method in the spreading and airing process. The temperature adjusting system comprises an interlocking mechanism used for containing materials needing to be cooled. The negative pressure suction module is used for providing a negative pressure suction effect for the interlocking mechanism so as to form a negative pressure environment in the interlocking mechanism; the temperature monitoring module is used for collecting temperature information in the interlocking mechanism, the control module is in signal connection with the negative pressure suction module and the temperature monitoring module, and the control module is configured to control the working state of the negative pressure suction module according to temperature changes of materials in the interlocking mechanism. According to the invention, a complex equipment combination is replaced by a set of system. Therefore, the number of equipment is reduced, the space utilization rate is greatly improved, and the production environment is more efficient and neat. On the whole, by means of the innovative cooling method and system integration scheme, the production efficiency is improved, the production cost is reduced, and a solid foundation is laid for the intelligent process of the wine brewing industry.

Description

Technical Field

[0001] The present invention relates to the technical field of wine making, and in particular to a temperature regulating system and method for a drying process. Background Art

[0002] In the production process of different types of liquor, although there are differences in some processes, there are steps to cool down the steamed grains or the mash after steaming. For example, the strong-flavor liquor adopts the process of "continuing the mash ingredients, mixed steaming and mixed burning", and the mixed raw materials and lees are put on the steamer to take the wine and steam the grain at the same time. Traditionally, it relies on the air-drying hall or mechanized air-drying equipment to cool the mash. However, with the acceleration of the intelligent process, the limitations of traditional mechanization or manual operation are increasingly exposed, especially in terms of cooling efficiency and temperature control accuracy. Some types of liquor also adopt the method of "steaming and mixing", emphasizing the steaming process of raw materials, the separate distillation of lees, and the cooling of the fully gelatinized grains and the mash after taking the wine while mixing evenly. In the process of cooling, these processes require the refinement of material processing in order to maximize the use of raw materials and increase the wine yield. Existing drying methods, such as floor drying halls, duck sheds and chain-type drying equipment, cannot meet the diversified production process requirements of different types of liquor, and generally have problems such as low cooling efficiency, uneven mixing, and inaccurate temperature control. Although chain-type drying equipment can achieve a certain degree of automation, it still faces problems such as steam exhaust and long cooling time. These problems not only lead to reduced production efficiency, but may also affect the quality of the final product.

[0003] CN 117628832A discloses a biomass cooling and airing machine based on a pulsating heat pipe, comprising a control system, a frame, a chain plate conveyor device and a pulsating heat pipe on the frame, a first fan compartment is arranged below the chain plate conveyor device; the chain plate conveyor device comprises a conveying assembly, a material receiving track and an airing track, a material receiving hopper device is arranged above the material receiving track; a stirring device is arranged between the material receiving track and the airing track; a first fan compartment with an air blowing device is arranged below the airing track, a pulsating heat pipe and a temperature sensor for monitoring the temperature of biomass are arranged on the airing track; a second fan compartment and a second fan are arranged at the tail of the pulsating heat pipe; the pulsating heat pipe is divided into a heating section and a cooling section; the heating section is located above the chain plate conveyor device, and the cooling section is located in the second fan compartment; the control system adjusts the speed of the conveying assembly and the air volume of the air blowing device according to the temperature sensor. Although the invention can achieve heat dissipation at the bottom of the chain conveyor belt and improve the cooling effect, its temperature sensor is arranged above the pulsating heat pipe, that is, the position of the temperature sensor is single and fixed. During the process of breaking up and supplying air, the influence of environmental factors and the flow of steam will affect the accuracy of temperature detection. Therefore, the feedback signal of the air supply volume based on temperature change is not representative. CN211394417U discloses a compound airing equipment, including a chassis, a conveying device, an air distribution device, a temperature sensor and a controller; the chassis is a semi-enclosed chassis, and a feed port is arranged on the chassis for conveying materials to the conveying device; a plurality of the conveying devices are fixedly arranged in the chassis from top to bottom, and the air distribution device is fixedly arranged in the chassis for ventilating and cooling the materials on each of the conveying devices; a temperature sensor is fixedly arranged at the conveying end of each of the conveying devices, and the controller is electrically connected to the temperature sensor and the air distribution device. In the invention, the temperature sensor is arranged on the conveying device, and the conveying device is used to ventilate and cool the materials. During the ventilation and cooling process, the temperature of the material, the temperature around the material, and the ambient temperature of the conveying device will all affect the accuracy of the temperature sensor's detection results. That is, the temperature sensor cannot truly reflect the actual temperature of the material.

[0004] At present, in the drying process of distilled mash or steamed grain, there are problems such as low drying efficiency and inaccurate temperature control. In some drying systems, temperature sensors are used to feedback the actual cooling status of the material without considering the impact of the location distribution of the temperature sensors or the collection timing on the accuracy of the material temperature.

[0005] In addition, on the one hand, there are differences in understanding among those skilled in the art; on the other hand, the applicant studied a large number of documents and patents when making the present invention, but due to space limitations, not all details and contents are listed in detail. However, this does not mean that the present invention does not have the characteristics of these prior arts. On the contrary, the present invention already has all the characteristics of the prior art, and the applicant reserves the right to add relevant prior art to the background technology. Summary of the invention

[0006] A uniform and suitable temperature for entering the cellar is an important condition for ensuring the normal growth and reproduction of brewing microorganisms, and airing is an important means to reduce the temperature of distilled mash or steamed grain and mash to a uniform and suitable temperature for entering the cellar. The airing process of different processes has different design requirements for airing equipment. Although the prior art has disclosed a variety of airing equipment, systems and methods, there are still disadvantages such as low airing efficiency and inaccurate temperature control.

[0007] In view of the shortcomings of the prior art, the first aspect of the present invention provides a temperature adjustment system for a drying process, comprising:

[0008] Interlocking mechanism for holding materials that need to be cooled;

[0009] A negative pressure suction module for providing negative pressure suction to the interlocking mechanism so as to form a negative pressure environment in the interlocking mechanism;

[0010] Temperature monitoring module for collecting temperature information in the chain mechanism,

[0011] and a control module connected to the negative pressure suction module and the temperature monitoring module respectively.

[0012] The control module is configured to control the working state of the negative pressure suction module according to the temperature change of the material in the interlocking mechanism.

[0013] According to a preferred embodiment, the temperature monitoring module includes a contact temperature sensor for measuring the real-time temperature of the material and a non-contact temperature sensor for monitoring the temperature of the surface of the material.

[0014] According to a preferred embodiment, a plurality of contact temperature sensors are arranged in the interlocking mechanism, wherein the contact temperature sensors are evenly distributed at different heights and positions in the tank body.

[0015] According to a preferred embodiment, the contact sensor includes a first contact sensor arranged on the upper part of the tank body to obtain temperature information near the tank top, a second contact sensor arranged on both sides of the middle of the tank body to obtain middle layer temperature information, and a third contact sensor arranged at the lower part of the tank body to collect the material temperature close to the bottom of the tank.

[0016] According to a preferred embodiment, a non-contact sensor is arranged on the upper part of the tank body to widely monitor the surface temperature of the material.

[0017] According to a preferred embodiment, the control module uses a data fusion algorithm to process the temperature data from different temperature sensors to generate an overall distribution of the temperature in the tank.

[0018] According to a preferred embodiment, the control module dynamically adjusts the working state of the condensation system according to the overall distribution of the temperature in the tank to accurately control the cooling process.

[0019] According to a preferred embodiment, a mixing device is provided in the interlocking mechanism, and the control module is configured to adjust the rotation direction and / or tilt angle of the mixing device based on the temperature information of different areas in the tank body so that the material away from the negative pressure port is moved to the vicinity of the negative pressure port.

[0020] According to a preferred embodiment, the negative pressure ports in the interlocking mechanism are symmetrically arranged, and the temperature monitoring module is arranged adjacent to the negative pressure ports.

[0021] Another aspect of the present invention provides a method for adjusting the temperature during airing, which is implemented based on the temperature adjustment system provided by the first aspect of the present invention, and comprises the following steps:

[0022] Collect temperature change information of materials in the chain mechanism;

[0023] The working state of the negative pressure suction module is controlled according to the temperature change information of the material in the interlocking mechanism.

[0024] The third aspect of the present invention provides another temperature regulation method for the drying process, which is implemented based on the temperature regulation system provided by the first aspect of the present invention, and includes the following steps: collecting temperature information at different heights and positions in the tank body within the interlocking mechanism, and dynamically adjusting the working state of the condensation system according to the overall distribution of the temperature in the tank to accurately control the cooling process.

[0025] Technical effects:

[0026] The temperature regulating system and method for the airing process of liquor brewing provided by the present invention can realize efficient airing, uniform mixing and precise temperature control of the fermented grains or steamed grains after distillation, and can also meet the differentiated requirements of different production processes for airing equipment. The present invention introduces an innovative cooling method, which uses continuous flipping negative pressure suction technology to ensure that the fermented grains or steamed grains after distillation can fully contact the air in the tank to achieve an efficient heat exchange process. In this process, the cooling rate of the material is significantly improved, and the uniform mixing of the fermented grains is also guaranteed, thereby effectively preventing the problem of local overheating or uneven temperature. In particular, the present invention arranges the position of the sensor for collecting temperature information so that the collected temperature information is representative. Through the integrated temperature control system, the present invention can realize the precise control of the temperature of the fermented grains, ensuring that the temperature of the fermented grains remains uniform before entering the cellar. This precise temperature control is greatly beneficial to the growth and reproduction of microorganisms, and promotes the stability of the fermentation process and the consistency of product quality.

[0027] In addition, another major advantage of the present invention is that it successfully integrates multiple devices required in the traditional production process, replacing the cumbersome equipment combination with a set of systems. This not only reduces the number of equipment, but also greatly improves the utilization of space, making the production environment more efficient and tidy. Overall, this innovative cooling method and system integration solution not only improves production efficiency, but also reduces production costs, laying a solid foundation for the modernization of the brewing industry. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic diagram of module connection of the temperature regulating system for the airing process provided by the present invention;

[0029] Figure 2 It is a structural schematic diagram of the interlocking mechanism provided by the present invention;

[0030] Figure 3 is a working schematic diagram of the control module provided by the present invention;

[0031] Figure 4 It is a working schematic diagram of a control module of another preferred embodiment provided by the present invention.

[0032] Reference numerals list

[0033] 100: interlocking mechanism; 110: tank body; 120: tank cover; 130: locking mechanism; 140: mixing device; 200: power source; 210: motor; 220: driving gear; 230: driven gear; 300: negative pressure suction module; 310: vacuum pump; 320: valve; 330: suction pipe; 340: condensation system; 350: buffer tank; 400: temperature monitoring module; 410: contact temperature sensor; 420: non-contact temperature sensor; 500: control module; 600: operation panel. DETAILED DESCRIPTION

[0034] The following is a detailed description with reference to the accompanying drawings.

[0035] In the description of the present invention, it should be noted that if the terms "inside", "upper", "lower", "left" or "right" appear to indicate directions or positional relationships, they are based on the directions or positional relationships shown in the accompanying drawings, or are the directions or positional relationships in which the product of the application is usually placed when in use. These are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention.

[0036] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect" and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0037] Example 1

[0038] This embodiment provides a temperature control system for the airing process. Figure 1 As shown, it includes a locking mechanism 100, a negative pressure suction module 300, a temperature monitoring module 400 and a control module 500. The control module 500 is signal-connected with the negative pressure suction module 300 and the temperature monitoring module 400 respectively.

[0039] The chain mechanism 100 is used to hold materials that need to be cooled. The materials that need to be cooled are, for example, steamed grains and fermented grains after distillation. The chain mechanism 100 includes a tank body 110 and a tank cover 120. Figure 2 As shown. The tank body 110 is the main body of the entire interlocking mechanism 100, responsible for containing materials, liquids or gases. The interior of the tank body 110 is treated to ensure corrosion resistance and pressure resistance. A mixing device 140 is provided in the tank body 110. The tank cover 120 is used to close the tank body 110, and is usually designed to be circular or polygonal, depending on the shape of the tank body 110. The inner side of the tank cover 120 is preferably equipped with a sealing ring to enhance the sealing effect. The sealing ring is located on the inner side of the tank cover 120 and contacts the tank body 110 to ensure a good sealing effect when the tank cover 120 is closed. The material of the sealing ring usually has good high temperature resistance and corrosion resistance. The cylinder is the power source 200 of the interlocking mechanism 100, usually a pneumatic or hydraulic cylinder. The cylinder is connected to the tank cover 120 through a push rod to achieve the lifting and sealing of the tank cover 120. The interlocking mechanism 100 also includes a connecting rod (or push rod), which is a connecting element between the cylinder and the tank cover 120 and is responsible for transmitting the driving force of the cylinder to the tank cover 120. The interlocking mechanism 100 also includes a locking mechanism 130, which is used to lock the position of the tank cover 120 after the tank cover 120 is closed to prevent accidental opening during use. When the cylinder is ventilated or pressurized, the piston rod is pushed outward, and the connecting rod moves downward therewith, pushing the tank cover 120 to fit tightly onto the tank body 110. At this time, the sealing ring is compressed to form a sealed state. When the tank body 110 needs to be opened, the cylinder is reversed, the connecting rod is retracted, the tank cover 120 is raised, and the seal is released. The locking mechanism 130 automatically intervenes after each closing operation to ensure that the tank cover 120 is not accidentally opened in a sealed state.

[0040] The temperature regulating system of the present embodiment also includes a power source 200. The power source 200 is connected to the control module 500 by signal. The power source 200 includes a motor 210, a driving gear 220, a driven gear 230 and a transmission shaft. The motor 210 is the core component of the power source 200, and the motor 210 provides rotational power. A DC motor 210 or an AC motor 210 can be selected, depending on actual needs and control methods. The driving gear 220 is fixed on the output shaft of the motor 210. The driving gear 220 transmits power to the driven gear 230 through rotation. The driven gear 230 is meshed with the driving gear 220 and fixed on the rotating shaft of the interlocking mechanism 100. The rotation and flipping of the tank body 110 are achieved by the rotation of the driven gear 230. The transmission shaft is the part connecting the driving gear 220 and the driven gear 230, which can ensure the effective transmission of power. The output shaft of the motor 210 is directly connected to the driving gear 220 to ensure that the rotation of the motor 210 can directly drive the gear to rotate. The driving gear 220 and the driven gear 230 are connected by gear meshing to ensure the smooth transmission of the rotation force, so that the driven gear 230 can rotate according to the rotation direction and speed of the driving gear 220. The driven gear 230 is connected to the rotating shaft of the interlocking mechanism 100 through a fixing device (such as a flange, a bolt, etc.), so that the rotation of the driven gear 230 directly causes the rotation of the interlocking mechanism 100, thereby realizing the overturning of the tank body 110. When the motor 210 is powered on, the motor 210 starts to rotate, and the driving gear 220 rotates accordingly. The rotation of the driving gear 220 drives the driven gear 230 to rotate. Due to the meshing relationship between the gears of the two, the speed and torque of the driven gear 230 are transmitted according to the proportional relationship of the gears. The driven gear 230 is connected to the rotating shaft of the interlocking mechanism 100 by a fixed connection. As the driven gear 230 rotates, the interlocking mechanism 100 begins to overturn clockwise or counterclockwise. When the set overturning angle is reached, the mixing device 140 in the interlocking mechanism 100 begins to form a relative motion with the material in the container. Due to the flipping of the interlocking mechanism 100, the grain and mash in the container continuously collide, roll and break up under the action of gravity and centrifugal force, accelerating the mixing process of the materials. At the same time, the relative movement brought by the flipping also helps to release heat and improve the heat exchange efficiency of the materials.

[0041] The negative pressure suction module 300 is connected to the interlocking mechanism 100, such as Figure 2As shown. The negative pressure suction module 300 includes a vacuum pump 310, a valve 320, a suction pipe 330, a condensation system 340 and a buffer tank 350. The vacuum pump 310 is the core equipment of the negative pressure suction module 300. The vacuum pump 310 is responsible for extracting the air in the interlocking mechanism 100, thereby forming a negative pressure environment. The vacuum pump 310 can be selected according to specific needs, such as a rotary vane, diaphragm or other type of vacuum pump 310. The valve 320 is used to control the opening and closing of the airflow to ensure that it can be started in time when suction is required. During the flipping process, the control module 500 can control the opening and closing of the valve 320. The vacuum pump 310 is connected to the interlocking mechanism 100 through the suction pipe 330. The suction pipe 330 is used to extract the air and steam in the interlocking mechanism 100 and introduce it into the condensation unit. The condensation system 340 includes a condenser, a cooling water circulation system, etc. The condensation system 340 is connected to the vacuum pump 310, which is used to cool the sucked steam into a liquid. The exhaust port of the vacuum pump 310 is connected to the condensation system 340 to ensure that the extracted steam can smoothly enter the condenser for condensation treatment. The buffer tank 350 is used to store the liquid that has been condensed, and then it is centrally processed and used. The valve 320 is connected to the control module 500 signal. Based on the state of the interlocking mechanism 100 (such as the flip angle, air pressure, etc.), the control module 500 can control the valve 320 to automatically open and close when a specific condition is met. While the interlocking mechanism 100 is flipped, the control module 500 controls the start of the negative pressure suction module 300. The valve 320 automatically opens at this time, and the vacuum pump 310 starts working. The vacuum pump 310 extracts the air in the interlocking mechanism 100 through the suction pipe 330, so that the air pressure in the inner cavity of the tank body 110 gradually decreases. In this process, the difference between the air pressure in the interlocking mechanism 100 and the external air pressure increases, thereby forming a negative pressure environment. In a negative pressure environment, volatile components (such as water) in the material will quickly evaporate into steam. As the air pressure decreases, the saturation temperature of the steam also decreases, making it easier for the water in the material to evaporate quickly.

[0042] The temperature monitoring module 400 is disposed in the interlocking mechanism 100. The temperature monitoring module 400 is used to collect temperature information in the interlocking mechanism 100. The temperature monitoring module 400 is preferably a temperature sensor.

[0043] The control module 500 can be an industrial control computer, which is suitable for an automated control system. The control module 500 controls the motor 210, valve 320, pump and other equipment through programming, and can process feedback signals from temperature sensors. The control module 500 can also be a system based on a single-chip microcomputer or a microcontroller, which can control the equipment by writing firmware and support the connection of multiple sensors and actuators. The control module 500 can also be an industrial PC, which can be used for real-time monitoring and control systems, and processing signals from sensors.

[0044] Preferably, the control module 500 is configured to control the working state of the negative pressure suction module 300 according to the temperature change of the material in the interlocking mechanism 100, such as Figure 3 shown.

[0045] Preferably, the control module 500 is configured to: when the temperature of the material drops to the set temperature, control the closure of the vacuum pump 310, and at the same time open the wastewater valve 320 of the buffer tank 350 to discharge the accumulated wastewater. The set temperature is, for example, 18 to 22°C. The control of the airing temperature directly affects the temperature of the material entering the cellar. Generally, the temperature of the material after airing should be adapted to the temperature entering the cellar to avoid stress and damage caused by temperature differences. The control of the airing temperature is also closely related to the growth and reproduction activities of microorganisms. Too high or too low a temperature during the airing process will affect the growth and metabolism of brewing microorganisms. Strict control of the airing temperature can promote the growth, reproduction and metabolism of brewing microorganisms and improve the fermentation quality.

[0046] The temperature control system of this embodiment preferably adopts a correction network with a lagging phase to achieve precise control of temperature. The control module 500 receives and processes the temperature signal of the temperature monitoring module 400 to achieve rapid and precise temperature regulation. The temperature control system also includes a gain loop module and an operation interface. The gain loop module is used to adjust the intensity of the control signal to adapt to different temperature changes. The operation interface is used for human-computer interaction, and the operation interface can display the current temperature and the set temperature. Preferably, the temperature control system includes a control algorithm module, a data recording and analysis module, and an alarm and fault diagnosis module. The control algorithm module is used to realize the processing and feedback control of the temperature signal, including gain adjustment and phase lag calculation. The data recording and analysis module is used to record temperature change data and provide a graphical interface for operator monitoring. The alarm and fault diagnosis module is used to monitor the system status in real time, and if an abnormality occurs, an alarm is issued and fault diagnosis information is provided.

[0047] Specifically, the temperature sensor transmits the temperature signal to the control module 500 in real time; the control unit identifies the temperature rise and fall trend according to the input signal, and adjusts the intensity of the control signal through the gain loop; the gain-adjusted signal is sent to the phase lag link to calculate the required cooling time; the phase lag module converts the calculated time parameter into a physical signal and instructs the condensation system 340 to start working; the condensation system 340 adjusts the cooling rate through the actuator to achieve precise temperature regulation. This embodiment enables the system to quickly identify temperature changes and achieve precise cooling control by introducing the gain loop and the phase lag link. The time constant τ and the standard deviation range are introduced in the linear regulation process, which effectively reduces the steady-state error of the system and improves the control accuracy. The system can respond quickly according to the real-time temperature signal, shorten the cooling time, and improve production efficiency. The setting of the data recording and analysis module enables the temperature change data to be traced, providing a basis for subsequent process optimization.

[0048] Example 2

[0049] This embodiment is a further improvement of Embodiment 1, and repeated contents will not be repeated here.

[0050] Although the temperature of the material in the tank is collected by installing a temperature sensor in the temperature control system, due to the influence of factors such as negative pressure and the overturning of the tank body 110, the representativeness or accuracy of the temperature of the material collected by the temperature sensor during the cooling process is not high. For the contact temperature sensor 410, during the rotation of the tank body 110, the contact between the temperature sensor and the mash is uneven, which affects the accurate detection of the temperature. In this case, the temperature reading may lag and fail to reflect the real-time temperature change in time, resulting in the failure of the temperature control strategy. For the non-contact temperature sensor 420, it can usually only measure the temperature of the surface of the mash and cannot accurately obtain the temperature distribution inside the tank body 110. When there is a large-scale temperature difference or uneven stirring, there may be a significant difference between the surface temperature and the internal temperature, which will make the temperature control strategy unable to be effectively implemented.

[0051] Therefore, the layout of the temperature sensor will significantly affect the accuracy of temperature acquisition. The control module 500 performs analysis and calculation based on the received temperature signal to control the working state of other modules. Under the condition that the temperature of the material reflected by the temperature signal is not accurate, the working parameters of other modules may not match the cooling requirements of the material, resulting in low cooling efficiency and inaccurate temperature control. During the drying process, inaccurate temperature control has a significant impact on the material itself and the subsequent moisture and temperature uniformity in the cellar. Inaccurate temperature control may lead to different drying speeds of the surface mash and the internal mash, causing the surface mash to dry too quickly and the moisture in the internal mash to fail to be effectively released, forming a "wet core" phenomenon, and then the moisture and temperature of the mash in the cellar and fermentation process are uneven, further affecting the growth and metabolism of brewing microorganisms, and ultimately affecting the subsequent fermentation quality and the formation of volatile flavor substances.

[0052] In order to optimize temperature monitoring and achieve precise temperature control, this embodiment provides another temperature control system for the drying process, which is specifically achieved by establishing a distributed sensor network based on a variety of different detection principles in the tank. The temperature control system includes a chain mechanism 100, a temperature monitoring module 400 and a control module 500. The temperature monitoring module 400 preferably includes a contact temperature sensor 410 (such as a thermocouple or RTD) and a non-contact temperature sensor 420 (such as an infrared temperature sensor). The contact temperature sensor 410 is used to measure the real-time temperature of the material. The non-contact temperature sensor 420 is used to monitor the temperature of the surface of the material. According to a preferred embodiment, a plurality of contact temperature sensors 410 are arranged in the chain mechanism 100, wherein the contact temperature sensors 410 are evenly distributed at different heights and positions in the tank body 110. Preferably, the contact sensor includes a first contact sensor arranged on the upper part of the tank body 110 to obtain temperature information near the tank top, a second contact sensor arranged on both sides of the middle part of the tank body 110 to obtain temperature information of the middle layer, and a third contact sensor arranged on the lower part of the tank body 110 to collect the temperature of the material near the bottom of the tank. Preferably, the non-contact sensor is arranged on the upper part of the tank body 110 to widely monitor the surface temperature of the material.

[0053] According to a preferred embodiment, the control module 500 uses a data fusion algorithm to process the temperature data from different temperature sensors to generate an overall distribution of the temperature in the tank.

[0054] According to a preferred embodiment, the control module 500 is further configured to control the working parameters of the negative pressure suction module 300 according to the overall distribution of the temperature in the interlocking mechanism 100. The working parameters of the negative pressure suction module 300 preferably include the negative pressure value and the suction time. In order to achieve the control process of optimizing temperature monitoring and accurately controlling temperature, the control module 500 of this embodiment is configured to design a temperature monitoring mathematical model based on the data collected by each sensor.

[0055] Specifically, the control module 500 is configured to perform the following operations:

[0056] 1. Get temperature data

[0057] Get temperature data at different heights from the contact temperature sensor 410:

[0058] T c (h i )=T c1 , T c2 , T c3 , ..., T cn

[0059] Acquire the temperature data of the top surface from the non-contact temperature sensor 420:

[0060] T nc (h top )=T nc

[0061] According to this embodiment, T nc It indicates the instantaneous temperature of the material surface at the top of the tank, which reflects the heat exchange between the material surface and the environment.

[0062] 2. Perform data fusion to generate the overall distribution of the temperature inside the tank, representing the overall temperature T inside the tank avg The calculation formula is as follows:

[0063]

[0064] Among them, T c (h i ) is the temperature of the ith contact temperature sensor at height h i The temperature measured at nc (h top ) is the temperature measured by the non-contact temperature sensor 410 at the upper part of the tank body; ci is the uncertainty of the i-th contact temperature sensor 410; σ ncis the uncertainty of the non-contact temperature sensor 420. In this embodiment, the uncertainty represents the maximum possible deviation between the sensor measurement value and the true value. That is, the uncertainty refers to the uncertainty range of the measurement result, which reflects the credibility of the measurement result.

[0065] According to this embodiment, σ ci is the standard deviation between the measured value of the i-th contact temperature sensor 410 and the actual temperature; σ nc is the standard deviation between the measured value of the non-contact temperature sensor 420 and the actual temperature. ci and σ nc The steps to obtain are as follows:

[0066] (1) Calibration

[0067] Select a standard reference point: Use a standard reference point with a known temperature (such as ice-water mixture, boiling water, etc.);

[0068] Multiple measurements: Use the sensor to perform multiple measurements at the same standard reference point;

[0069] Calculate the mean and standard deviation: Record the results of each measurement and calculate the mean and standard deviation.

[0070] (2) Calculation uncertainty

[0071] In this embodiment, the standard deviation (reflecting the dispersion of the measured values) is taken as the uncertainty, and the calculation formula is as follows:

[0072]

[0073]

[0074] Among them, T ci，j and T nc，j are the contact and non-contact temperature values ​​measured for the jth time, respectively; and are the average values ​​of contact and non-contact temperatures, respectively; N is the number of measurements.

[0075] The specific calculation example of uncertainty provided in this embodiment is as follows:

[0076] Assume that 10 calibration measurements are performed on a contact temperature sensor 410 to obtain the data in Table 1 (unit: ° C.).

[0077] Table 1

[0078]

[0079] Calculate the average:

[0080]

[0081] Calculate the standard deviation:

[0082]

[0083]

[0084]

[0085] Through the above calculation, the present embodiment can obtain the uncertainty of the contact and non-contact temperature sensors. Further, the uncertainty is used in the data fusion algorithm to improve the accuracy and reliability of temperature measurement.

[0086] 3. Evaluate the temperature difference. The temperature difference ΔT is calculated as follows:

[0087]

[0088] Among them, w i is the position weight of the i-th contact temperature sensor 410, which is used to adjust the contribution of sensors at different positions to the overall temperature uniformity assessment. The temperature change at some positions may have a greater impact on the overall temperature distribution, so the sensor weights at these positions will be higher; T avg is the average temperature obtained by the data fusion algorithm in this embodiment (i.e., represents the overall temperature in the tank).

[0089] According to a preferred embodiment, i The settings are manually set based on the importance of the position in the tank. Specifically, temperature changes in the upper part of the tank may affect the surface evaporation rate and air flow; temperature changes in the middle of the tank may affect the core temperature of the material; temperature changes in the lower part of the tank may affect the bottom temperature and fluidity of the material. The weights of sensors in different positions are manually set according to the tank structure and process requirements.

[0090] For example, if the upper temperature has a greater impact on the evaporation rate, the upper sensor can be given a higher weight; if the middle temperature has a greater impact on the core temperature of the material, the middle sensor can be given a higher weight.

[0091] According to a preferred embodiment, i The setting can also be determined based on the statistical results of historical data. Specifically, during the actual operation, the temperature data of sensors at different positions are recorded; the overall temperature uniformity and other related indicators (such as evaporation rate, material state, etc.) are recorded at the same time; statistical methods (such as regression analysis, principal component analysis, etc.) are used to analyze the relationship between the temperature changes of sensors at different positions and the overall temperature uniformity; the temperature changes at specific positions are identified to have the greatest impact on the overall temperature uniformity; and the weights of sensors at different positions are calculated based on the statistical analysis results.

[0092] According to a preferred embodiment, i The setting can also be determined based on machine learning algorithms. The specific steps include: collecting a large amount of historical data, including temperature data of sensors at different locations and overall temperature uniformity indicators; using machine learning algorithms (such as support vector machines, neural networks, etc.) to train models to predict the impact of temperature changes of sensors at different locations on overall temperature uniformity; and optimizing the weights of sensors at different locations through model training results.

[0093] This embodiment provides the following example to obtain the weights of sensors at different locations. Assume that there are three contact temperature sensors 410 in the tank, located at the upper, middle and lower parts respectively, and their temperature measurement values ​​are respectively:

[0094] T c1 =25℃(upper part)

[0095] T c2 =24.5℃(middle)

[0096] T c3 =24.8℃(lower part)

[0097] Assuming the average temperature T avg =24.7℃, the weights are:

[0098] w1=0.4

[0099] w2=0.3

[0100] w3=0.3

[0101] Then the temperature difference evaluation formula is:

[0102]

[0103]

[0104]

[0105] The above method can effectively obtain and set the weights of sensors at different positions, so as to more accurately evaluate the uniformity of the temperature in the tank, thereby ensuring the accuracy of the temperature adjustment during the drying process.

[0106] According to this embodiment, when ΔT>ΔT threshold When the temperature difference exceeds the set threshold, the control module 500 dynamically adjusts the negative pressure value and negative pressure suction duration of the negative pressure suction module 300.

[0107] According to this embodiment, ΔTthreshold It is set based on process requirements and experience. Different wine production processes have different requirements for temperature uniformity. For example, when the process requires a relatively uniform temperature distribution, ΔT threshold Set to 0.5℃; when the process has a higher tolerance to temperature differences, set ΔT threshold Set to 1.5℃ or higher.

[0108] According to this embodiment, ΔT threshold It can also be obtained based on statistical analysis of historical data. Specifically, during the production process, a large amount of historical operation data is collected, including temperature distribution at different time points, material status, final product quality, etc.; the changes in temperature difference ΔT during each operation are recorded; statistical analysis tools (such as mean, standard deviation, variance, etc.) are used to analyze historical data to find out the relationship between temperature difference and product quality, and determine a critical value so that when the temperature difference exceeds this value, the product quality or process stability is significantly reduced. For example, through historical data analysis, it was found that when the temperature difference exceeded 1.2°C, the product flavor score dropped significantly, so ΔT was set to 0.2°C. threshold Set to 1.2℃.

[0109] According to this embodiment, ΔT threshold It can also be used to verify ΔT based on experimental verification, simulation and emulation methods. threshold Determinations are made to ensure that the system responds promptly when the temperature distribution is uneven, optimize temperature control during the drying process, and ultimately improve the quality and production efficiency of the wine.

[0110] Specifically, the control module 500 is configured to adjust the negative pressure value. vac The adjustment formula for (t) is as follows:

[0111]

[0112] Among them, K p , K i and K d They are the proportional, integral and differential coefficients of the negative pressure value controlled by the control module 500, and the proportional coefficient K p Determines the response strength of the control module 500 to the current error; the integral coefficient K i Determines the cumulative effect of the control module 500 on past errors; the differential coefficient K d Determines the control module 500's ability to predict future error changes; is the reference negative pressure value, which is set according to the equipment characteristics and process requirements; It is the benchmark pumping time, which is set according to equipment characteristics and process requirements.

[0113] According to this embodiment, K pIt is preferred to set the initial value based on experience and experimental data, and then gradually adjust it through trial and error. p It can also be calculated by the Ziegler-Nichols method (determining the initial value by the critical proportionality method or the critical period method) or the genetic algorithm. i It is preferred to set the initial value based on experience and experimental data, and then gradually adjust it through trial and error. i It can also be calculated by Ziegler-Nichols method and genetic algorithm. d It is preferred to set the initial value based on experience and experimental data, and then gradually adjust it through trial and error. d It can also be calculated by Ziegler-Nichols method and genetic algorithm.

[0114] According to this embodiment, the calculation formula of the temperature error e(t) is as follows:

[0115] e(t)=T target -T avg (t)

[0116] Among them, T target is the target temperature, which is set according to the process requirements.

[0117] Specifically, the control module 500 is configured to adjust the puffing time, the puffing time t suck The adjustment formula for (t) is as follows:

[0118]

[0119] Among them, K p ′, K i ′ and K d ' are respectively the proportional, integral and differential coefficients of the control module 500 for controlling the puffing time, K p ′, K i ′ and K d The meaning and method of obtaining ′ are the same as K p , K i and K d , I will not go into details here.

[0120] According to a preferred embodiment, a humidity sensor is further provided in the tank body of the present embodiment, and the humidity sensor is signal-connected to the control module 500 to collect information on humidity changes of the mash in the tank body during the drying process.

[0121] This embodiment also considers that the wine flavor score is affected by the overall temperature T avg and the influence of temperature uniformity ΔT. Further, the control module 500 associates temperature control with wine flavor and generates a wine flavor score F(t) as follows:

[0122]

[0123] Wherein, α, β and γ are influence coefficients, satisfying α+β+γ=1. In this embodiment, α, β and γ are set by fitting experimental data or expert experience; T avg is the average temperature. This embodiment has been described in the previous part and will not be repeated here. min The lowest temperature at which the wine flavor is formed, which is set according to the process requirements and experimental data; T ideal is the ideal temperature, which is set according to the process requirements and experimental data; ΔT is the temperature difference, which has been explained in the previous part of this embodiment and will not be repeated here; k3 is the sensitivity of temperature uniformity to flavor, which is obtained by fitting the experimental data; H(t) is the humidity influence factor, which is obtained by real-time measurement of the humidity sensor.

[0124] The method provided in this embodiment obtains temperature sensors at different distribution positions in the tank body to obtain temperature change information that can truly reflect the temperature of the mash in the tank body, so as to improve the accuracy and stability of temperature control, ensure the accuracy of temperature control during the drying process, and ultimately achieve the goal of optimizing the flavor and quality of the wine.

[0125] According to a preferred embodiment, the control module 500 dynamically adjusts the working state of the condensation system 340 according to the overall distribution of the temperature in the tank to accurately control the cooling process, thereby achieving efficient and accurate temperature control goals.

[0126] By arranging multiple contact temperature sensors 410 at different positions, temperature data at different levels in the tank can be obtained, thereby accurately reflecting the temperature distribution. In this way, the temperature difference can be identified in time and dynamically adjusted according to the actual situation. The combination of data from contact and non-contact sensors can effectively eliminate the problem of inaccurate temperature measurement caused by external factors such as stirring and turning, and form a more comprehensive temperature monitoring system. This embodiment establishes a distributed sensor network in the tank, so that the system can generate a more accurate temperature curve based on multiple data sources, respond in time, and ensure the accuracy of temperature control.

[0127] Example 3

[0128] This embodiment is a further improvement of Embodiment 1 and Embodiment 2, and the repeated contents will not be repeated here.

[0129] During the negative pressure suction process, the air flow velocity at the negative pressure port is relatively fast. According to Bernoulli's principle, an increase in air flow velocity will lead to a decrease in local pressure, which may bring about a change in temperature. The heat conduction between the cold air at the negative pressure port and the hotter surrounding air may cause heat to migrate from the surrounding area to the negative pressure port, but due to the high air flow velocity at the negative pressure port, the efficiency of this heat migration is low, making the temperature difference more significant. In addition, the design and operating parameters of the negative pressure suction equipment (such as suction rate, flipping situation, pipe diameter, etc.) will also affect the temperature at the negative pressure port, resulting in a temperature difference between this area and other locations. When the air flow passes through the negative pressure suction port, the high air flow velocity will accelerate the transfer of heat, so that the temperature of this area may decrease. During the suction process, the moisture on the surface of the material is quickly removed, resulting in an evaporative cooling effect. The evaporation of moisture around the negative pressure port will take away heat, making the temperature of this area lower than other locations. Negative pressure suction causes the humid air to be drawn away, resulting in a decrease in the relative humidity at the negative pressure port, thereby enhancing the evaporative cooling effect and further causing a decrease in temperature. The prior art does not consider the correlation between the position of the negative pressure port and the position of the temperature sensor when collecting the material temperature, nor does it consider the influence of the layout of the temperature sensor on the accuracy of temperature collection.

[0130] In view of the above-mentioned defects, this embodiment provides another temperature regulation system for the drying process, including a locking mechanism 100 , a temperature monitoring module 400 , a negative pressure suction module 300 and a control module 500 .

[0131] The temperature monitoring module 400 includes a plurality of temperature sensors. Preferably, the temperature sensors are arranged at different positions in the tank body 110 according to the distance from the negative pressure port, such as Figure 4 shown.

[0132] The temperature adjustment system preferably also includes an image acquisition module for acquiring temperature information of different areas in the tank body 110. The image acquisition module can be an infrared thermal imaging camera or an infrared sensor.

[0133] According to a preferred embodiment, a mixing device 140 is provided in the interlocking mechanism 100, and the control module 500 is configured to adjust the rotation direction and / or tilt angle of the mixing device 140 based on the temperature information of different areas in the tank body 110, so that the material away from the negative pressure port is moved to the vicinity of the negative pressure port.

[0134] According to a preferred embodiment, the negative pressure ports in the interlocking mechanism 100 are symmetrically arranged, and the temperature sensor is arranged adjacent to the negative pressure ports. The position where the suction pipe 330 is connected to the interlocking mechanism 100 is the negative pressure port.

[0135] According to a preferred embodiment, the suction pipe 330 is connected to the inner cavity of the ribbon screw in the interlocking mechanism 100. The ribbon screw is preferably provided with through holes with partitions at intervals, and the through holes have multiple directions, but are mainly downward. This setting can ensure that the temperature collected by the temperature sensor is representative and can reflect the real temperature of the material. Therefore, the drying efficiency, temperature uniformity of entering the cellar, and moisture uniformity of entering the cellar can be guaranteed.

[0136] Example 4

[0137] The present embodiment provides a method for regulating the temperature during the drying process, which is based on the system implementation of embodiments 1 to 3 and includes the following steps: collecting temperature information at different heights and positions in the tank body 110 in the interlocking mechanism 100, and dynamically adjusting the working state of the condensation system 340 according to the overall distribution of the temperature in the tank to accurately control the cooling process.

[0138] This embodiment first takes the temperature adjustment method in the steaming and mixing process as an example to perform statistics on the drying time and temperature fluctuation information.

[0139] 900kg of grain after cooking and 2000kg of fermented grain after distillation are transferred and poured into the tank body 110, and the reversal function of the tank body 110 is turned on to realize 360-degree reversal of the negative pressure container, so that the grain and fermented grain are evenly mixed, and the negative pressure suction module 300 is started at the same time. The evaporated water vapor carries heat and enters the condensation system 340 through the suction pipe 330. The condensation system 340 transfers the heat in the water vapor through heat exchange and discharges it into the air. At the same time, the water vapor releases heat, condenses into water, and is discharged through the buffer tank. After 20 minutes of treatment (45 minutes for traditional airing), the temperature of the fermented grain drops to about 22°C, and the fluctuation range is within 1.5°C (the traditional airing temperature fluctuates 3 to 5°C), which effectively improves the cooling efficiency and temperature control effect of airing. This embodiment significantly shortens the airing time of the fermented grain through an innovative treatment method, which only takes 20 minutes, which reduces the processing time by 25 minutes compared with the 45 minutes required for traditional airing. This time saving not only improves the overall efficiency of production, but also shortens the production cycle, thereby meeting market demand more quickly and improving the company's responsiveness and competitiveness. In addition, during the processing process, the present invention effectively controls the temperature of the mash at around 22°C, with a fluctuation range of only 1.5°C. In contrast, the temperature fluctuation of the traditional airing method is between 3 and 5°C, with a larger fluctuation range. This smaller temperature volatility helps to maintain the consistency and stability of the mash, ensuring that the quality of fermentation and brewing is not affected by temperature fluctuations in the subsequent production process, thereby improving the overall quality of the product.

[0140] This embodiment also takes the temperature adjustment method in the mixed steaming and mixed firing process as an example to perform statistics on the airing time and temperature fluctuation information.

[0141] The mash distilled by the mixed steaming and burning process is transferred and poured into the tank body 110, and the flipping function of the tank body 110 is turned on to realize the 360-degree flipping of the negative pressure container. The heat of the material is quickly dissipated through the flipping of the container and the mash flipping structure in the container. At the same time, the negative pressure suction system is started, and the evaporated water vapor carries the heat and enters the condensation system 340 through the suction pipe 330. The condensation system 340 transfers the heat in the water vapor through heat exchange and discharges it into the air. At the same time, the water vapor releases heat, condenses into water, and is discharged through the buffer tank. After 15 minutes of treatment (25 minutes for traditional airing), the temperature of the mash drops to about 21°C, and the fluctuation range is within 1.5°C (the traditional airing temperature fluctuates by 3 to 5°C), which effectively improves the cooling efficiency and temperature control effect of airing.

[0142] Therefore, the method provided in this embodiment can greatly improve the drying efficiency of different processes and effectively improve the accuracy of the temperature entering the cellar.

[0143] During the drying process, if the temperature control is unstable, it may cause uneven distribution of moisture in the material, which in turn affects the moisture management after entering the cellar. When the moisture and temperature control of the material are not accurate, a temperature gradient may form after entering the cellar, resulting in higher or lower temperatures in certain areas of the cellar. This uneven temperature distribution may interfere with the activity of microorganisms and affect the uniformity and stability of the fermentation process. Uneven temperature and moisture distribution will cause microorganisms to show inconsistent activity during the fermentation process, affecting the fermentation quality and efficiency.

[0144] Precise temperature control can ensure that the material is dried evenly during the drying process, avoiding quality loss, thereby improving the flavor and nutritional content of the final product. Precise temperature control can improve the stability and efficiency of the fermentation and processing process, thereby reducing the waste rate and improving overall production efficiency.

[0145] It should be noted that the above-mentioned specific embodiments are exemplary, and those skilled in the art can come up with various solutions inspired by the disclosure of the present invention. The equivalent replacement of the raw materials selected by the present invention, the addition of auxiliary components, the selection of specific methods, etc., also belong to the disclosure scope of the present invention and fall within the protection scope of the present invention. Those skilled in the art should understand that the description of the present invention and its drawings are illustrative and do not constitute limitations on the claims. The scope of protection of the present invention is defined by the claims and their equivalents. The description of the present invention contains multiple inventive concepts, such as "preferably" and "according to a preferred embodiment", which means that the corresponding paragraph discloses an independent concept, and the applicant reserves the right to file a divisional application based on each inventive concept.

Claims

1. A temperature control system for a drying process, comprising: A locking mechanism (100) for containing materials that need to be cooled; A negative pressure suction module (300) for providing a negative pressure suction effect to the interlocking mechanism (100) so as to form a negative pressure environment in the interlocking mechanism (100); a temperature monitoring module (400) for collecting temperature information in the interlocking mechanism (100), and a control module (500) connected to the negative pressure suction module (300) and the temperature monitoring module (400) by signals, characterized in that: The control module (500) is configured to control the working state of the negative pressure suction module (300) according to the temperature change information of the material in the interlocking mechanism (100).

2. The temperature control system according to claim 1, characterized in that: The temperature monitoring module (400) comprises a contact temperature sensor (410) for collecting the internal temperature of the material and a non-contact temperature sensor (420) for collecting the surface temperature of the material.

3. The temperature control system according to claim 1 or 2, characterized in that: A plurality of contact temperature sensors (410) are arranged in the interlocking mechanism (100), wherein the contact temperature sensors (410) are evenly distributed at different heights and positions in the tank body (110).

4. The temperature control system according to any one of claims 1 to 3, characterized in that: The contact sensor comprises a first contact sensor arranged on the upper part of the tank body (110) to obtain temperature information near the tank top, a second contact sensor arranged on both sides of the middle part of the tank body (110) to obtain temperature information of the middle layer, and a third contact sensor arranged on the lower part of the tank body (110) to collect the temperature of the material close to the tank bottom.

5. The temperature control system according to any one of claims 1 to 4, characterized in that: The non-contact sensor is arranged on the upper part of the tank body (110) to widely monitor the surface temperature of the material.

6. The temperature control system according to any one of claims 1 to 5, characterized in that: The control module (500) uses a data fusion algorithm to process the temperature data from different temperature sensors to generate an overall distribution of the temperature in the tank.

7. The temperature control system according to any one of claims 1 to 6, characterized in that: The control module (500) dynamically adjusts the working state of the condensation system (340) according to the overall distribution of the temperature in the tank, so as to accurately control the cooling process.

8. The temperature control system according to any one of claims 1 to 7, characterized in that: The interlocking mechanism (100) is provided with a mixing device (140), and the control module (500) is configured to adjust the rotation direction and / or tilt angle of the mixing device (140) based on temperature information of different areas in the tank body (110), so that the material away from the negative pressure port is moved to the vicinity of the negative pressure port.

9. The temperature control system according to any one of claims 1 to 8, characterized in that: The negative pressure ports in the interlocking mechanism (100) are symmetrically arranged, and the temperature monitoring module (400) is arranged adjacent to the negative pressure ports.

10. A method for regulating temperature during airing, characterized in that: The method is implemented based on the temperature control system according to any one of claims 1 to 9, and comprises the following steps: Collecting temperature change information of materials in the interlocking mechanism (100); The working state of the negative pressure suction module (300) is controlled according to the temperature change information of the material in the interlocking mechanism (100).

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