Method, device and system for program-controlled drying of freezing system

Abstract

The present application relates to the field of temperature control technology, and discloses a method for program-controlled drying of a freezing system, wherein the program-controlled freezing system includes a cavity for cold storage and a heating module, and the method includes: in response to an operating instruction of a drying mode, starting the heating module to heat and dry the cavity; and, according to a preset heating rate, adjusting the operating power of the heating module within multiple control cycles, so that the cavity temperature rises linearly with the control cycle. This method can ensure the stability of cavity heating and fully release the cold; compared with the traditional PID control algorithm heating, this solution can prevent the temperature from overshooting too quickly, thereby allowing the cold in the cavity to diffuse and achieve full evaporation of the water in the cavity. The present application also discloses a device for program-controlled drying of a freezing system and a program-controlled freezing system.

Description

Technical Field

[0001] The present application relates to the field of temperature regulation technology, for example, to a method and device for program-controlled drying of a refrigeration system and a program-controlled refrigeration system. Background Art

[0002] The programmed cooling instrument is a program-controlled freezing system with adjustable temperature change rate. It is widely used in various fields such as light industry, agriculture, medicine, basic biological research, etc., and is used for freezing lymphocytes, tissue banks, bone marrow cells, tumor cells, animal and plant cells, myocardial cells, etc. At present, during the use of the programmed cooling instrument, liquid nitrogen is used for cooling and freezing to ensure the validity of the sample. When it is used again, the PID algorithm (Proportion-Integral-Differential) is used to control the cavity inside the box to quickly heat up to the ambient temperature to achieve cavity drying.

[0003] In the process of implementing the embodiments of the present disclosure, it is found that there are at least the following problems in the related art:

[0004] This method has the problem of heating up too quickly, resulting in the cold in the box not being fully released. In this case, using a programmed cooling device will cause temperature fluctuations, affecting the accuracy of subsequent temperature control. Summary of the invention

[0005] In order to provide a basic understanding of some aspects of the disclosed embodiments, a brief summary is given below. The summary is not an extensive review, nor is it intended to identify key / critical components or delineate the scope of protection of these embodiments, but rather serves as a prelude to the detailed description that follows.

[0006] The embodiments of the present disclosure provide a method and device for program-controlled drying of a refrigeration system and a program-controlled refrigeration system, so that the cavity temperature is increased at a constant rate to ensure sufficient release of the coldness of the cavity.

[0007] In some embodiments, the method includes: in response to an operating instruction of a drying mode, starting a heating module to heat and dry the cavity; and, according to a preset heating rate, adjusting the operating power of the heating module within multiple control cycles so that the cavity temperature rises linearly with the control cycle.

[0008] In some embodiments, the device comprises: a processor and a memory storing program instructions, wherein the processor is configured to execute the above-mentioned method for program-controlled drying of a freezing system when running the program instructions.

[0009] In some embodiments, the program-controlled freezing system includes: a cavity and a heating module for cold storage, and the above-mentioned device for drying the program-controlled freezing system.

[0010] The method, device and program-controlled refrigeration system for program-controlled drying of a refrigeration system provided in the embodiments of the present disclosure can achieve the following technical effects:

[0011] In the disclosed embodiment, when the program-controlled refrigeration system executes the cavity drying mode, the operating power of the heating module is controlled so that the cavity temperature is heated at a preset heating rate. The stability of the cavity heating rate is ensured by a linear heating rate. Compared with the traditional PID control algorithm heating, this solution controls the cavity temperature to rise linearly with the control cycle, which can prevent the temperature from overshooting too quickly due to the heating rate being too fast. The coldness of the cavity is fully diffused to achieve full evaporation of the moisture in the cavity. This ensures the accuracy of temperature control when the program-controlled refrigeration system is used again.

[0012] The above general description and the following description are exemplary and explanatory only and are not intended to limit the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] One or more embodiments are exemplarily described by corresponding drawings, which do not limit the embodiments. Elements with the same reference numerals in the drawings are shown as similar elements, and the drawings do not constitute a scale limitation, and wherein:

[0014] Figure 1 is a schematic diagram of a method for program-controlled drying of a freezing system provided by an embodiment of the present disclosure;

[0015] Figure 2 is a schematic diagram of another method for program-controlled drying of a freezing system provided by an embodiment of the present disclosure;

[0016] Figure 3 is a schematic diagram of a method for determining the operating power of a heating module provided by an embodiment of the present disclosure;

[0017] Figure 4 is a schematic diagram of another method for program-controlled drying of a freezing system provided by an embodiment of the present disclosure;

[0018] Figure 5 is a schematic diagram of another method for program-controlled drying of a freezing system provided by an embodiment of the present disclosure;

[0019] Figure 6 It is a schematic diagram of a device for program-controlled drying of a freezing system provided in an embodiment of the present disclosure. DETAILED DESCRIPTION

[0020] In order to be able to understand the features and technical contents of the embodiments of the present disclosure in more detail, the implementation of the embodiments of the present disclosure is described in detail below in conjunction with the accompanying drawings. The attached drawings are for reference only and are not used to limit the embodiments of the present disclosure. In the following technical description, for the convenience of explanation, a full understanding of the disclosed embodiments is provided through multiple details. However, one or more embodiments can still be implemented without these details. In other cases, to simplify the drawings, well-known structures and devices can be simplified for display.

[0021] The terms "first", "second", etc. in the specification and claims of the embodiments of the present disclosure and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the terms used in this way can be interchanged where appropriate, so that the embodiments of the embodiments of the present disclosure described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions.

[0022] Unless otherwise stated, the term "plurality" means two or more.

[0023] In the embodiment of the present disclosure, the character " / " indicates that the preceding and following objects are in an "or" relationship. For example, A / B indicates: A or B.

[0024] The term "and / or" is a description of the association relationship between objects, indicating that three relationships can exist. For example, A and / or B means: A or B, or, A and B.

[0025] The term "correspondence" may refer to an association relationship or a binding relationship. The correspondence between A and B means that there is an association relationship or a binding relationship between A and B.

[0026] During the use of the program-controlled refrigeration system, the lowest temperature can reach -196°C, and a large amount of cold is stored in the cavity, especially in the refrigeration pipeline. Therefore, after use, the temperature of the cavity needs to be heated to the ambient temperature before the next use. However, since the temperature detection element is set in the space inside the cavity, and the air in the cavity heats up quickly. After the heating is completed, there is a problem that the cold in the refrigeration pipeline is not fully released. The release of cold will cause the temperature to fluctuate again, affecting the temperature control of the next use.

[0027] Combination Figure 1 As shown, the embodiment of the present disclosure provides a method for program-controlled drying of a freezing system, comprising:

[0028] S01, the program controls the refrigeration system to respond to the operation instruction of the drying mode, and starts the heating module to heat and dry the cavity.

[0029] In the disclosed embodiment, the program-controlled refrigeration system is provided with a drying mode. When the program-controlled refrigeration system is used again after the last use, the command can be selected through the control panel of the program-controlled refrigeration system to start the heating module of the program-controlled refrigeration system to heat and dry the cavity.

[0030] S02, the program controls the refrigeration system to adjust the operating power of the heating module within multiple control cycles according to a preset heating rate, so that the cavity temperature rises linearly with the control cycle.

[0031] In the embodiment of the present disclosure, the preset heating rate is a set value, and its value range is 1-4°C / min, and can be 2°C / min. Alternatively, the preset heating rate can be calculated by the target temperature, target duration and current cavity temperature. In this way, the operating power of the heating module can be adjusted within the control cycle by the preset heating rate. In general, the preset heating rate is positively correlated with the operating power of the heating module. That is, the faster the preset heating rate, the greater the operating power of the heating module. In addition, the power is adjusted within multiple control cycles, and the power is usually adjusted within each control cycle. It can be understood that if the output power meets the requirements in a certain control cycle, no adjustment is required.

[0032] The traditional PID algorithm runs the algorithm after setting the target temperature, so that the cavity temperature approaches the target temperature at a faster speed. In this way, the cavity temperature changes quickly at first and then slowly, and the heating rate cannot be adjusted. In this scheme, the heating rate is maintained constant by periodically adjusting the operating power of the heating module. Specifically, in order to ensure that the cavity temperature changes according to the preset heating rate, the operating power of the heating module is adjusted within multiple control cycles to ensure that the cavity is heated at a constant rate. For example, in each control cycle, the input set temperature is adjusted according to the preset heating rate, thereby adjusting the operating power of the heating module. Alternatively, in each control cycle, the operating power of the heating module is adjusted according to the set step size. In this way, the cavity is continuously dried during the heating process so that the cold can be fully released.

[0033] The method for program-controlled freezing system drying provided by the embodiment of the present disclosure can increase the cavity temperature at a preset heating rate, thereby ensuring the stability of the cavity heating. Compared with the traditional PID control algorithm heating, this solution linearizes the cavity temperature and time change curve by adjusting the operating power of the heating module. In this way, it is possible to prevent the temperature from overshooting too quickly. The coldness in the cavity is completely released, and the water in the cavity is fully evaporated.

[0034] Optionally, in step S02, the program controls the refrigeration system to adjust the operating power of the heating module within a plurality of control cycles according to a preset heating rate, including:

[0035] When the cavity temperature of the program-controlled refrigeration system is lower than the preset temperature, the following steps are executed in a cycle according to the set control cycle:

[0036] Calculate the target temperature T of the i-th control cycle i , i=1,…; according to the target temperature, determine the operating power of the heating module in the i-th control cycle.

[0037] In the disclosed embodiment, when the cavity temperature is less than the preset temperature, the operating power of the heating module is adjusted within multiple control cycles according to the preset heating rate. When the cavity temperature is greater than or equal to the preset temperature, the loop step is jumped out. The preset temperature refers to the cavity drying temperature set by the user. For example, the user sets the cavity to be dried to 26°C. Here, the power can be adjusted based on the LADRC (Linear Active Disturbance Rejection Control) algorithm or the PID algorithm. Among them, the active disturbance rejection control ADRC (Active Disturbance Rejection Control) is mainly composed of three parts: TD (tracking-differentiator), ESO (extended state observer), and NLSEF (nonlinear state error feedback control law). The LADRC algorithm omits the tracking-differentiator (TD) configuration transition process part, and focuses on the linear simplification of the state observer ESO and the nonlinear combination control law. At the same time, the extended state observer is linearized using the integral idea. And the parameters are linked to the bandwidth of ESO, which simplifies the design of ESO. A simple PD control combination is used to link the proportional coefficient, differential time constant and the bandwidth of the controller, which simplifies the tuning of the controller.

[0038] In addition, since the temperature rise of the cavity needs to be controlled according to the preset heating rate, the target temperature of the algorithm is calculated according to the set control cycle. The set control cycle refers to the control cycle of the algorithm controller, for example, the cycle length P of the control cycle is 3 seconds. Further, in each control cycle, the target temperature of the control cycle is calculated to adjust the operating power by the target temperature. Therefore, the target temperature is a value that changes periodically. In addition, the target temperature refers to the input value of each control cycle, that is, the set value input by the control algorithm in each control cycle. Determine and calculate the target temperature T of the i-th control cycle i After that, the operating power of the heating module in this control cycle can be calculated through the corresponding algorithm.

[0039] Optionally, in step S02, the program controls the refrigeration system to calculate the target temperature T of the i-th control cycle. i ,include:

[0040] Calculate Ti =T0+i*v*P / 60;

[0041] Among them, T i is the target temperature of the ith control cycle, T0 is the initial temperature of the cavity, v represents the preset heating rate, and P represents the cycle duration of the control cycle of the control algorithm.

[0042] In the disclosed embodiment, to adjust the target power of the heating module, it is necessary to determine the target temperature of the LADRC algorithm or the PID algorithm, that is, the set value input by the algorithm controller. The initial temperature of the cavity of the refrigeration system and the preset heating rate can be controlled according to the program to calculate the target temperature of the algorithm controller. Based on the initial temperature and the target temperature of the cavity, the algorithm controller calculates and obtains the control signal, and then controls the operating power of the heating module through the control signal.

[0043] As an example, the initial temperature of the cavity is 10°C, the preset heating rate is 2°C / min, and the control cycle is 3 seconds long; then the target temperature of the algorithm controller in the first control cycle is 10+2*3 / 60, that is, 10.1°C. As another example, the initial temperature of the cavity is 10°C, the preset heating rate is 2°C / min, and the set temperature of the cavity is 60°C, then it takes 25 minutes to run according to the preset heating rate. In the case of this running time and a control cycle of 3 seconds, there are 500 control cycles, and the preset temperature of the nth control cycle is 10+(60-10)*n / 500. In this way, based on the LADRC algorithm or the PID algorithm, the program control refrigeration system is heated at a preset heating rate. Compared with the traditional PID control algorithm, the algorithm in the embodiment of the present disclosure is more suitable for the control of dynamic processes and has higher control accuracy. And it can strictly control the heating rate to avoid temperature overshoot and incomplete release of cold.

[0044] The program controls the initial temperature of the refrigeration system cavity, the preset heating rate and the control cycle, and determines the target temperature of each control cycle of the corresponding algorithm. In this way, the target temperature can be re-entered in each control cycle to ensure that the cavity temperature rises at the preset heating rate. It can suppress excessive heating and maintain the stability of the cavity temperature.

[0045] Optionally, in step S02, the program controls the refrigeration system according to the target temperature T i , adjusting the operating power of the heating module in the i-th control cycle, including:

[0046] The program controls the refrigeration system based on the target temperature T i , run the linear active disturbance rejection control algorithm for calculation.

[0047] The program controls the refrigeration system to adjust the operating power of the heating module in the i-th control cycle to the power corresponding to the calculation result.

[0048] In the disclosed embodiment, the control signal of the heating module is a pulse signal, namely a PWM (Pulse Width Modulation) signal. Based on the LADRC algorithm, after determining the set temperature, the algorithm can be run to obtain a PWM signal. The duty cycle of the PWM signal is adjusted by presetting the heating rate, thereby achieving the adjustment of the operating power of the heating module.

[0049] Optionally, in step S02, the preset heating rate is determined by:

[0050] Calculate v = (T t -T0) / t,

[0051] Where T0 is the initial temperature of the cavity, T t is the preset temperature of the cavity, and t is the target heating time.

[0052] In the disclosed embodiment, the preset heating rate can be obtained by calculation. Specifically, the preset temperature and the target duration desired by the user can be obtained, and the temperature in the current cavity can be obtained by the temperature detection element. In this way, the linear heating rate within the target duration can be obtained, and the linear heating rate can be determined as the preset heating rate. In this way, the preset heating rate can be automatically calculated by the setting parameters input by the user on the program-controlled refrigeration system.

[0053] Combination Figure 2 As shown, the embodiment of the present disclosure provides another method for program-controlled drying of a freezing system, comprising:

[0054] S21, the program controls the refrigeration system to respond to the operation instruction of the drying mode and start the heating module to heat and dry the cavity.

[0055] S22, the program controls the refrigeration system to adjust the operating power of the heating module within multiple control cycles according to a preset heating rate, so that the cavity temperature rises linearly with the control cycle.

[0056] S23, the program controls the refrigeration system to calculate the actual heating rate of the cavity; when the actual heating rate is greater than the preset heating rate, the heating module is controlled to be turned off.

[0057] In the disclosed embodiment, after the program-controlled refrigeration system controls the operation of the heating module through the control algorithm, it is necessary to further determine the actual temperature rise of the cavity of the program-controlled refrigeration system. When the actual temperature rise rate is greater than the preset temperature rise rate, the heating module is turned off. In this way, the actual temperature rise rate in the cavity is reduced to ensure that the cold in the cavity can be fully released. And by turning off the heating module, the actual temperature rise rate is reduced to or below the preset temperature rise rate.

[0058] Optionally, in step S23, the program-controlled refrigeration system obtains the actual heating rate of the cavity temperature of the program-controlled refrigeration system in the following manner:

[0059] Calculate v r =(T r -T c )*60 / P;

[0060] Among them, v r Indicates the actual heating rate, T r represents the current temperature of the cavity at the end of the ith control cycle, T c represents the current temperature of the cavity at the beginning of the i-th control cycle, and P represents the cycle length of the control cycle.

[0061] In the disclosed embodiment, the current temperature of the cavity is detected, and the difference between the temperature and the target temperature of the current control cycle is obtained. After the difference is divided by the control cycle, the actual temperature rise rate of the cavity in the current control cycle can be obtained. In this way, the actual temperature rise rate of the cavity temperature in each control cycle can be obtained in real time. In order to compare the actual temperature rise rate with the preset temperature rise rate, the control strategy can be adjusted to achieve stable temperature rise.

[0062] Optionally, in step S23, after the program controls the refrigeration system to control the heating module to turn off, the process further includes:

[0063] After the heating module is turned off for a preset time, if the actual heating rate of the cavity temperature is less than or equal to the preset heating rate, the program controls the refrigeration system to control the heating module to turn on again.

[0064] In the embodiment of the present disclosure, after the heating module is turned off, the actual heating rate of the cavity can be re-acquired after a preset time. When the actual heating rate drops below the preset heating rate, the heating module is controlled to turn on again. Here, the preset time can be 3-5 minutes. The actual heating rate of the cavity in the set time is obtained, for example, the heating rate within 30 seconds. So that when the heating rate drops to less than or equal to the preset heating rate, the cavity continues to be heated so that the cavity reaches the target temperature as soon as possible.

[0065] Combination Figure 3 As shown, the embodiment of the present disclosure provides another method for program-controlled drying of a freezing system, comprising:

[0066] S31, the program controls the refrigeration system to respond to the operation instruction of the drying mode and start the heating module to heat and dry the cavity.

[0067] S32, the program controls the refrigeration system to detect the cavity temperature, and determines whether the detected temperature is greater than or equal to the temperature threshold.

[0068] S33, the program controls the refrigeration system to adjust the operating power of the heating module within multiple control cycles according to a preset heating rate, so that the cavity temperature rises linearly with the control cycle.

[0069] In the disclosed embodiment, a temperature detection element such as a temperature sensor is provided in the cavity of the program-controlled refrigeration system to detect the cavity temperature of the program-controlled refrigeration system to obtain the cavity temperature. By comparing the magnitude relationship between the detected temperature and the temperature threshold, the drying strategy of the program-controlled refrigeration system is determined. Here, the temperature threshold is a set value, for example, it can be 0°C. Specifically, when the detected cavity temperature is greater than or equal to the temperature threshold, the operating power of the heating module is adjusted within multiple control cycles according to a preset heating rate.

[0070] Combination Figure 4 As shown, the embodiment of the present disclosure provides another method for program-controlled drying of a freezing system, comprising:

[0071] S41, the program controls the refrigeration system to respond to the operation instruction of the drying mode and start the heating module to heat and dry the cavity.

[0072] S42, the program controls the refrigeration system to detect the cavity temperature, and compares the detected temperature with the temperature threshold.

[0073] S43, when it is determined that the detected temperature is greater than or equal to the temperature threshold, the program controls the refrigeration system to adjust the operating power of the heating module within multiple control cycles according to a preset heating rate, so that the cavity temperature rises linearly with the control cycle.

[0074] S44, when it is determined that the detected temperature is less than the temperature threshold, the program controls the refrigeration system to control the heating tube of the heating module to operate at the maximum power, and controls the fan of the heating module to operate at the highest speed.

[0075] In the disclosed embodiment, when the detected cavity temperature is less than the temperature threshold, it indicates that the cavity temperature is low and deviates far from the ambient temperature or the set temperature. In this case, the heating module is controlled to operate at maximum power. This helps to quickly increase the temperature. At the same time, controlling the fan to operate at maximum power can speed up the fluidity of the air in the cavity, allowing the cold to be discharged quickly. In turn, the cavity temperature reaches the temperature threshold at a faster rate.

[0076] In practical applications, such as Figure 5 As shown,

[0077] S51, program controls the refrigeration system to operate in a drying mode;

[0078] S52, detecting the cavity temperature;

[0079] S53, determining whether the detected temperature is greater than a temperature threshold, if the detected temperature is greater than the temperature threshold, executing S54, if not, executing S58;

[0080] S54, adjusting the operating power of the heating module within a plurality of control cycles according to a preset heating rate;

[0081] S55, obtaining the actual temperature rise rate of the cavity of the program-controlled refrigeration system;

[0082] S56, determining whether the actual heating rate is greater than the preset heating rate, if the actual heating rate is greater than the preset heating rate, executing S57; if not, executing S54;

[0083] S57, control the heating module to turn off; after a preset time, execute S55;

[0084] S58, controlling the heating tube of the heating module to operate at maximum power, and controlling the fan of the heating module to operate at maximum speed.

[0085] The embodiment of the present disclosure provides a device for program-controlled drying of a refrigeration system, comprising a response module and an adjustment module. The response module is configured to respond to an operation instruction of a drying mode and start a heating module to heat and dry a cavity; the adjustment module is configured to adjust the operating power of the heating module within a plurality of control cycles according to a preset heating rate, so that the cavity temperature rises linearly with the control cycle.

[0086] The device for program-controlled drying of a refrigeration system provided by the embodiment of the present disclosure can ensure the stability of the temperature rise of the cavity. Compared with the traditional PID control algorithm temperature rise, this solution can prevent the temperature from overshooting too quickly, and can diffuse the cold in the cavity to achieve sufficient evaporation of the water in the cavity.

[0087] Combination Figure 6 As shown, an embodiment of the present disclosure provides a device for program-controlled drying of a refrigeration system, including a processor (processor) 600 and a memory (memory) 601. Optionally, the device may also include a communication interface (Communication Interface) 602 and a bus 603. Among them, the processor 600, the communication interface 602, and the memory 601 can communicate with each other through the bus 603. The communication interface 602 can be used for information transmission. The processor 600 can call the logic instructions in the memory 601 to execute the method for program-controlled drying of a refrigeration system of the above embodiment.

[0088] In addition, the logic instructions in the memory 601 described above can be implemented in the form of software functional units and can be stored in a computer-readable storage medium when sold or used as an independent product.

[0089] The memory 601 is a computer-readable storage medium that can be used to store software programs and computer executable programs, such as program instructions / modules corresponding to the method in the embodiment of the present disclosure. The processor 600 executes the function application and data processing by running the program instructions / modules stored in the memory 601, that is, the method for program-controlled drying of a refrigeration system in the above embodiment is implemented.

[0090] The memory 601 may include a program storage area and a data storage area, wherein the program storage area may store an operating system and an application required for at least one function; the data storage area may store data created according to the use of the terminal device, etc. In addition, the memory 601 may include a high-speed random access memory and may also include a non-volatile memory.

[0091] An embodiment of the present disclosure provides a program-controlled refrigeration system, comprising the above-mentioned device for program-controlled drying of a refrigeration system.

[0092] An embodiment of the present disclosure provides a storage medium storing computer executable instructions, wherein the computer executable instructions are configured to execute the above method for program-controlled drying of a freezing system.

[0093] The above-mentioned storage medium may be a transient computer-readable storage medium or a non-transitory computer-readable storage medium.

[0094] The technical solution of the embodiment of the present disclosure can be embodied in the form of a software product, which is stored in a storage medium and includes one or more instructions for enabling a computer device (which may be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the method described in the embodiment of the present disclosure. The aforementioned storage medium may be a non-transient storage medium, including: a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk, and other media that can store program codes, or a transient storage medium.

[0095] The above description and the accompanying drawings fully illustrate the embodiments of the present disclosure so that those skilled in the art can practice them. Other embodiments may include structural, logical, electrical, process and other changes. The embodiments represent only possible changes. Unless explicitly required, separate components and functions are optional, and the order of operation may vary. The parts and features of some embodiments may be included in or replace the parts and features of other embodiments. Moreover, the words used in this application are only used to describe the embodiments and are not used to limit the claims. As used in the description of the embodiments and the claims, unless the context clearly indicates, the singular forms of "a", "an" and "the" are intended to include plural forms as well. Similarly, the term "and / or" as used in this application refers to any and all possible combinations of listings containing one or more associated ones. In addition, when used in the present application, the term "comprise" and its variants "comprises" and / or comprising refer to the presence of stated features, wholes, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, wholes, steps, operations, elements, components and / or groups thereof. In the absence of further restrictions, the elements defined by the sentence "comprising a ..." do not exclude the presence of other identical elements in the process, method or device comprising the elements. In this article, each embodiment may focus on the differences from other embodiments, and the same and similar parts between the various embodiments may refer to each other. For the methods, products, etc. disclosed in the embodiments, if they correspond to the method part disclosed in the embodiments, then the relevant parts can refer to the description of the method part.

[0096] Those skilled in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software may depend on the specific application and design constraints of the technical solution. The technicians may use different methods for each specific application to implement the described functions, but such implementations should not be considered to exceed the scope of the embodiments of the present disclosure. The technicians may clearly understand that, for the convenience and simplicity of description, the specific working processes of the systems, devices and units described above may refer to the corresponding processes in the aforementioned method embodiments, and will not be repeated here.

[0097] In the embodiments disclosed herein, the disclosed methods and products (including but not limited to devices, equipment, etc.) can be implemented in other ways. For example, the device embodiments described above are only schematic. For example, the division of the units can be only a logical function division. There may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. In addition, the coupling or direct coupling or communication connection between each other shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms. The units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the units may be selected according to actual needs to implement this embodiment. In addition, each functional unit in the embodiment of the present disclosure may be integrated in a processing unit, or each unit may exist physically alone, or two or more units may be integrated in one unit.

[0098] The flowchart and block diagram in the accompanying drawings show the possible architecture, function and operation of the system, method and computer program product according to the embodiment of the present disclosure. In this regard, each box in the flowchart or block diagram can represent a module, a program segment or a part of the code, and the module, the program segment or a part of the code contains one or more executable instructions for realizing the specified logical function. In some alternative implementations, the functions marked in the box can also occur in a different order from the order marked in the accompanying drawings. For example, two consecutive boxes can actually be executed substantially in parallel, and they can sometimes be executed in the opposite order, which can depend on the functions involved. In the description corresponding to the flowchart and the block diagram in the accompanying drawings, the operations or steps corresponding to different boxes can also occur in a different order from the order disclosed in the description, and sometimes there is no specific order between different operations or steps. For example, two consecutive operations or steps can actually be executed substantially in parallel, and they can sometimes be executed in the opposite order, which can depend on the functions involved. Each block in the block diagrams and / or flowcharts, and combinations of blocks in the block diagrams and / or flowcharts, may be implemented by a dedicated hardware-based system that performs the specified functions or actions, or may be implemented by a combination of dedicated hardware and computer instructions.

Claims

1. A method for drying a program-controlled freezing system, wherein the program-controlled freezing system comprises a cavity for cold storage and a heating module, characterized in that: The method comprises: In response to the operation instruction of the drying mode, the heating module is started to heat and dry the cavity; and, According to the preset heating rate, the operating power of the heating module is adjusted in multiple control cycles so that the cavity temperature rises linearly with the control cycle.

2. The method according to claim 1, characterized in that The step of adjusting the operating power of the heating module in a plurality of control cycles according to a preset heating rate includes: When the cavity temperature is lower than the preset temperature, the following steps are executed cyclically according to the set control cycle: Calculate the target temperature T of the i-th control cycle i , i=1,…; According to the target temperature T i , adjust the operating power of the heating module in the i-th control cycle.

3. The method according to claim 2, characterized in that The target temperature T of the i-th control cycle is calculated i ,include: Calculate T i =T0+i*v*P / 60; Wherein, T0 is the initial temperature of the cavity, v is the preset heating rate, and P is the cycle duration of the control cycle.

4. The method according to claim 3, characterized in that According to the target temperature T i , adjust the operating power of the heating module in the i-th control cycle, including: Based on the target temperature T i , run the linear active disturbance rejection control algorithm for calculation; The operating power of the heating module in the i-th control cycle is adjusted to the power corresponding to the calculation result.

5. The method according to claim 1, characterized in that The preset heating rate is determined by: Calculate v = (T t -T0) / t, Where v is the preset heating rate, T0 is the initial temperature of the cavity, T t is the preset temperature of the cavity, and t is the target heating time.

6. The method according to any one of claims 1 to 5, characterized in that: After the operating power of the heating module is adjusted in a plurality of control cycles, the method further includes: Calculate the actual heating rate of the cavity; When the actual heating rate is greater than the preset heating rate, the heating module is controlled to be turned off.

7. The method according to claim 6, characterized in that The actual heating rate of the cavity is calculated as follows: Calculate v r =(T r -T c )*60 / P; Among them, v r Indicates the actual heating rate, T r represents the current temperature of the cavity at the end of the i-th control cycle, T c Represents the current temperature of the cavity at the beginning of the i-th control cycle.

8. The method according to claim 6, characterized in that After the controlling heating module is turned off, the method further comprises: After the heating module is turned off for a preset time, when the actual heating rate of the cavity is less than or equal to the preset heating rate, the heating module is controlled to be turned on again.

9. The method according to any one of claims 1 to 5, characterized in that: Before adjusting the operating power of the heating module in a plurality of control cycles according to the preset heating rate, the method further comprises: The cavity temperature is detected, and it is determined that the detected temperature is greater than or equal to a temperature threshold.

10. The method according to claim 9, characterized in that The heating module includes a heating tube and a fan, and the method further includes: When it is determined that the detected temperature is less than the temperature threshold, the heating tube of the heating module is controlled to operate at a maximum power, and the fan of the heating module is controlled to operate at a maximum speed.

11. A device for program-controlled drying of a freezing system, comprising a processor and a memory storing program instructions, characterized in that: The processor is configured to execute the method for program-controlled freezing system drying according to any one of claims 1 to 10 when running the program instructions.

12. A program-controlled freezing system, comprising a cavity for cold storage and a heating module, characterized in that: Also included is a device for program-controlled freezing system drying as described in claim 11.

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