Refrigerator temperature control method and system, controller and storage medium

Abstract

The application discloses a cold storage temperature control method and system, a controller and a storage medium, and relates to the technical field of energy-saving refrigerator-freezer refrigeration technology. The method comprises the following steps: acquiring a first target setting temperature input through a user terminal; performing mode determination processing according to the first target setting temperature and preset temperature zone threshold information, and determining a target control logic from a plurality of candidate control logics; controlling a refrigeration circulating unit to start and perform refrigeration processing on the cold storage according to the target control logic, so that the temperature in the cold storage reaches the first target setting temperature; acquiring real-time temperature in the cold storage continuously collected by a temperature sensor; after the temperature in the cold storage reaches the first target setting temperature, performing data analysis on the real-time temperature in the cold storage to obtain temperature fluctuation conditions; and performing refrigeration adjustment processing according to the temperature fluctuation conditions, so that the real-time temperature in the cold storage returns to the first target setting temperature. The cold storage can be intelligently controlled to cope with various application scenarios.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of energy-saving refrigerator-freezer refrigeration, and in particular to a cold storage temperature control method and system, a controller and a storage medium. BACKGROUND

[0002] The refrigeration units currently on the market are usually designed for specific temperature zones, such as units dedicated to freezing or units dedicated to refrigeration. Even some units that claim to have multi-temperature zone functions rely on manual selection for mode switching, and the operating personnel need to have certain professional knowledge to determine the required mode for the current goods type. If the selection is improper, it may lead to a decrease in the accuracy of the temperature control, an increase in energy consumption, or even damage to the goods. In addition, the fixed mode control strategy cannot cope with the dynamic changes in the heat load in the cold storage. When the ambient temperature fluctuates or the goods are frequently in and out, the stability of the set temperature is poor, the compressor starts and stops frequently, affecting the service life and energy efficiency of the equipment. Therefore, the temperature control in the current cold storage is low in intelligence and relies on manual experience, which is inconvenient to operate, and it is difficult to cope with dynamic changes in application scenarios. SUMMARY

[0003] The present application aims to at least solve one of the technical problems existing in the prior art. To this end, the present application provides a cold storage temperature control method and system, a controller and a storage medium, which can realize intelligent temperature control of the cold storage to cope with various application scenarios.

[0004] In a first aspect, the embodiments of the present application provide a cold storage temperature control method applied to a controller in a cold storage temperature control system; the cold storage temperature control system comprises: a controller, a temperature sensor electrically connected to the controller, a refrigeration cycle unit and a user terminal; the method comprises:

[0005] obtaining a first target set temperature input through the user terminal;

[0006] determining a target control logic from a plurality of candidate control logics according to the first target set temperature and preset temperature zone threshold information; the candidate control logics include: a low-temperature mode control logic, a medium-temperature mode control logic and a high-temperature mode control logic;

[0007] controlling the refrigeration cycle unit to start and perform refrigeration processing on the cold storage according to the target control logic, so that the temperature in the cold storage reaches the first target set temperature;

[0008] The temperature sensor continuously collects the real-time temperature in the cold storage. After the temperature in the cold storage reaches the first target set temperature, the real-time temperature in the cold storage is analyzed to obtain a temperature fluctuation condition. The refrigeration adjustment processing is performed according to the temperature fluctuation condition, so that the real-time temperature in the cold storage returns to the first target set temperature.

[0009] In a second aspect, the embodiments of the present application provide a cold storage temperature control system, comprising a controller, a temperature sensor electrically connected to the controller, a refrigeration circulating unit and a user terminal; the controller is configured to execute the cold storage temperature control method according to any one of the embodiments of the first aspect.

[0010] In a third aspect, the embodiments of the present application provide a controller, comprising at least one processor and a memory connected to the at least one processor for communication; the memory stores instructions executable by the at least one processor, and the instructions are executed by the at least one processor to enable the at least one processor to execute the cold storage temperature control method according to any one of the embodiments of the first aspect.

[0011] In a fourth aspect, the embodiments of the present application provide a computer readable storage medium, which stores computer executable instructions for causing a computer to execute the cold storage temperature control method according to any one of the first aspect.

[0012] The embodiments of the present application include:

[0013] The cold storage temperature control system comprises a controller, a temperature sensor electrically connected to the controller, a refrigeration circulating unit and a user terminal; during operation of the cold storage temperature control system, the controller first acquires a first target set temperature input through the user terminal; mode determination processing is performed according to the first target set temperature and preset temperature zone threshold information to determine a target control logic from a plurality of candidate control logics; the candidate control logics comprise low-temperature mode control logic, medium-temperature mode control logic and high-temperature mode control logic; the refrigeration circulating unit is controlled to start and perform refrigeration processing on the cold storage according to the target control logic, so that the temperature in the cold storage reaches the first target set temperature; the real-time temperature in the cold storage continuously collected by the temperature sensor is acquired, and after the temperature in the cold storage reaches the first target set temperature, data analysis is performed on the real-time temperature to obtain temperature fluctuation, refrigeration adjustment processing is performed according to the temperature fluctuation, so that the real-time temperature in the cold storage returns to the first target set temperature; the target control logic of the refrigeration circulating unit is determined through the input first target set temperature, and the refrigeration circulating unit works in the target control logic to realize different temperature zone functions such as freezing or refrigeration; and the temperature fluctuation in the cold storage is obtained based on real-time detection and analysis, temperature adjustment is performed, the real-time temperature in the cold storage returns to the first target set temperature, an intelligent temperature control mechanism is realized to cope with various application scenarios. That is, the application can realize intelligent temperature control of the cold storage to cope with various application scenarios.

[0014] Other features and advantages of the present application will be set forth in the following description, and in part will become apparent to those skilled in the art from the description, or can be learned by practice of the present application. The objects and other advantages of the present application can be achieved and obtained by means of the structures particularly pointed out in the description and the accompanying drawings. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 is a system architecture schematic diagram of a cold storage temperature control system provided by an embodiment of the present application;

[0016] Figure 2 is a specific structure schematic diagram of a cold storage temperature control system provided by an embodiment of the present application;

[0017] Figure 3 is a flow schematic diagram of a cold storage temperature control method provided by an embodiment of the present application;

[0018] Figure 4 is a hardware structure schematic diagram of a controller provided by an embodiment of the present application. DETAILED DESCRIPTION

[0019] In order to make the purposes, technical solutions and advantages of the present application clearer, the present application will be further described in detail below with reference to the drawings and embodiments.

[0020] It should be noted that although the logical order is shown in the flowchart in the description of the present application, in some cases, the steps shown or described can be performed in an order different from that in the flowchart. In the description of the present application, several meanings are one or more, and multiple meanings are two or more. The description of "first", "second" is only for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features or the sequence of indicated technical features.

[0021] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the present application belongs. The terms used herein are only for the purpose of describing the embodiments of the present application and are not intended to limit the present application.

[0022] The present application provides a cold storage temperature control method and system, a controller and a computer readable storage medium, relating to the technical field of energy-saving refrigerator and freezer refrigeration. The method comprises: obtaining a first target set temperature input through a user terminal; determining a target control logic from a plurality of candidate control logics according to the first target set temperature and preset temperature zone threshold information; controlling the refrigeration circulating unit to start and perform refrigeration processing on the cold storage according to the target control logic, so that the temperature in the cold storage reaches the first target set temperature; obtaining the real-time temperature in the cold storage continuously collected by the temperature sensor, and after the temperature in the cold storage reaches the first target set temperature, performing data analysis on the real-time temperature in the cold storage to obtain the temperature fluctuation, and performing refrigeration adjustment processing according to the temperature fluctuation to restore the real-time temperature in the cold storage to the first target set temperature. The intelligent temperature control of the cold storage can be realized to cope with various application scenarios.

[0023] The embodiments of the present application will be further described below with reference to the drawings.

[0024] As shown in Figure 1 The cold storage temperature control system 1000 includes a controller 100, a temperature sensor 400, a refrigeration circulating unit 300 and a user terminal 200. The controller 100 is electrically connected to the temperature sensor 400, the refrigeration circulating unit 300 and the user terminal 200. Specifically, the temperature sensor 400 is arranged in the cold storage for collecting the real-time temperature in the cold storage.

[0025] As shown in Figure 2As shown, the refrigeration cycle unit 300 includes a fan 301, a compressor 302, a compressor drive module 303, a condenser drive module 304, and an evaporator drive module 305, and is used for refrigeration processing of the cold storage under the control of the controller 100. The user terminal 200 includes an input interface 201, and an engineer can configure a first target set temperature and a second target set temperature at the input interface 201. The controller 100 includes a control logic library 101, and the control logic library 101 stores low-temperature mode control logic, medium-temperature mode control logic, and high-temperature mode control logic.

[0026] Specifically, the controller 100 is configured to: acquire the first target set temperature input by the user terminal 200; perform mode determination processing according to the first target set temperature and preset temperature zone threshold information, and determine target control logic from a plurality of candidate control logics; the candidate control logics include: low-temperature mode control logic, medium-temperature mode control logic, and high-temperature mode control logic; control the refrigeration cycle unit 300 to start and perform refrigeration processing on the cold storage according to the target control logic, so that the temperature in the cold storage reaches the first target set temperature; acquire the real-time temperature in the cold storage continuously collected by the temperature sensor 400, and perform data analysis on the real-time temperature in the cold storage after the temperature in the cold storage reaches the first target set temperature to obtain temperature fluctuation, and perform refrigeration adjustment processing according to the temperature fluctuation, so that the real-time temperature in the cold storage returns to the first target set temperature; and the cold storage can be intelligently controlled to cope with various application scenarios.

[0027] It can be understood that the application provides a cold storage temperature control system 1000 of a multi-mode intelligent temperature control mechanism, and a hardware core of the system is a controller 100 integrated with multiple sets of control logic. The controller 100 is connected to and receives a target set temperature from an input interface and a real-time temperature in a cold storage fed back from a temperature sensor 400 in the cold storage. The controller 100 internally pre-stores at least three sets of control logic parameters designed for high-temperature cold storage, medium-temperature cold storage, and low-temperature cold storage, respectively. When a user configures a target set temperature through an input interface, the controller 100 immediately executes the following steps: first, compare the received target set temperature with each temperature threshold in the preset temperature zone threshold information, if the target set temperature falls within a predefined low-temperature range below-18℃, automatically activate the low-temperature mode control logic, if the target set temperature falls within a predefined medium-temperature range (-18℃~4℃), automatically activate the medium-temperature mode control logic, and if the target set temperature falls within a predefined high-temperature range (4℃~10℃), automatically activate the high-temperature mode control logic. Each set of control logic (i.e., the low-temperature mode control logic, the medium-temperature mode control logic, and the high-temperature mode control logic) contains parameters such as compressor operating frequency control strategies, condenser fan speed control strategies, evaporator fan speed control strategies, and defrost triggering strategies that match the characteristics of the temperature zone.

[0028] Therefore, in the cold storage temperature control system 1000 of this application embodiment, the controller 100, temperature sensor 400, refrigeration cycle unit 300, and user terminal 200 cooperate to realize the cold storage temperature control method provided in this application embodiment. The target control logic of the refrigeration cycle unit 300 is determined by the input first target set temperature, and the refrigeration cycle unit 300 is made to operate within the target control logic, realizing different temperature zone functions such as freezing or refrigeration. Furthermore, it can adjust the temperature based on real-time detection and analysis of temperature fluctuations within the cold storage, restoring the real-time temperature inside the storage to the first target set temperature, thus realizing an intelligent temperature control mechanism to cope with various application scenarios. In other words, the cold storage temperature control system 1000 of this application can achieve intelligent temperature control of the cold storage to cope with various application scenarios.

[0029] It is understood that the cold storage temperature control system provided in this application embodiment can be applied to large cold chain warehouses, as well as to energy-saving refrigerators and energy-saving freezers.

[0030] Those skilled in the art will understand that the system structure shown in the figures does not constitute a limitation on the embodiments of this application, and may include more or fewer components than shown, or combine certain components, or have different component arrangements.

[0031] The system embodiments described above are merely illustrative. The units described as separate components may or may not be physically separate; that is, they may be located in one place or distributed across multiple network units. Some or all of the modules can be selected to achieve the purpose of this embodiment according to actual needs.

[0032] It will be understood by those skilled in the art that the system architecture and application scenarios described in the embodiments of this application are for the purpose of more clearly illustrating the technical solutions of the embodiments of this application, and do not constitute a limitation on the technical solutions provided in the embodiments of this application. It is known by those skilled in the art that with the evolution of system architecture and the emergence of new application scenarios, the technical solutions provided in the embodiments of this application are also applicable to similar technical problems.

[0033] Based on the above system structure, various embodiments of the cold storage temperature control method of this application are proposed below.

[0034] like Figure 3 As shown, Figure 3 This is a schematic flowchart of a cold storage temperature control method provided in one embodiment of this application; the cold storage temperature control method can be applied to, for example... Figure 1The controller of the cold storage temperature control system shown includes a controller, a temperature sensor electrically connected to the controller, a refrigeration circulating unit, and a user terminal. The cold storage temperature control method can include, but is not limited to, steps S100 to S400.

[0035] Step S100: Obtain the first target set temperature input through the user terminal.

[0036] Step S200: Perform mode determination processing according to the first target set temperature and preset temperature zone threshold information to determine the target control logic from multiple candidate control logics; the candidate control logics include low-temperature mode control logic, medium-temperature mode control logic, and high-temperature mode control logic.

[0037] Step S300: Control the refrigeration circulating unit to start and perform refrigeration processing on the cold storage according to the target control logic, so that the temperature inside the cold storage reaches the first target set temperature.

[0038] Step S400: Obtain the real-time temperature inside the cold storage continuously collected by the temperature sensor, and perform data analysis on the real-time temperature inside the cold storage to obtain the temperature fluctuation after the temperature inside the cold storage reaches the first target set temperature. According to the temperature fluctuation, perform refrigeration adjustment processing to restore the real-time temperature inside the cold storage to the first target set temperature.

[0039] In step S100, the user terminal includes an input interface, and an engineer configures the first target set temperature through the input interface. It can be understood that the temperature required when the cold storage is used as a freezer room is different from the temperature required when it is used as a refrigerator room or other application scenarios, so the first target set temperature can be defined according to the required application scenario, and the application does not specifically limit the value of the first target set temperature.

[0040] According to some embodiments of the application, specifically, in step S200, the preset temperature zone threshold information includes a first temperature threshold, a second temperature threshold, and a third temperature threshold; wherein the second temperature threshold is greater than the first temperature threshold; the third temperature threshold is greater than the second temperature threshold. In an embodiment, the first temperature threshold is -18°C, the second temperature threshold is 4°C, and the third temperature threshold is 10°C. It can be understood that the low-temperature interval range is determined to be below -18°C according to the first temperature threshold; the first temperature threshold and the second temperature threshold can determine the medium-temperature interval range to be -18°C to 4°C; the second temperature threshold and the third temperature threshold can determine the high-temperature interval range to be 4°C to 10°C.

[0041] It can be understood that the values of the first temperature threshold, the second temperature threshold, and the third temperature threshold can also be determined according to the requirements, and the application does not specifically limit the values of the first temperature threshold, the second temperature threshold, and the third temperature threshold.

[0042] According to some embodiments of the present application, step S200 is further illustrated; step S200: performing mode determination processing according to the first target set temperature and the preset temperature zone threshold information to determine the target control logic from the plurality of candidate control logics, including but not limited to the following steps: performing threshold comparison processing on the target set temperature and the preset temperature zone threshold information to obtain a comparison result; in the case where the comparison result indicates that the target set temperature is less than or equal to the first temperature threshold, determining the low-temperature mode control logic as the target control logic; in the case where the comparison result indicates that the target set temperature is greater than the first temperature threshold and less than the second temperature threshold, determining the medium-temperature mode control logic as the target control logic; in the case where the comparison result indicates that the target set temperature is greater than or equal to the second temperature threshold and less than the third temperature threshold, determining the high-temperature mode control logic as the target control logic. The target control logic of the refrigeration cycle unit is determined by the input first target set temperature and the preset temperature zone threshold information, which provides a reference for subsequent control of the refrigeration cycle unit.

[0043] Specifically, the refrigeration cycle unit further comprises a compressor and a fan. The compressor and the fan work together to refrigerate.

[0044] According to some embodiments of the present application, step S300 is further illustrated; step S300: controlling the refrigeration cycle unit to start and perform refrigeration processing on the cold storage according to the target control logic, including but not limited to the following steps: in the case where the target control logic is the low-temperature mode control logic, obtaining the first frequency and the first wind speed from the low-temperature mode control logic; controlling the compressor to operate according to the first frequency and controlling the fan to operate according to the first wind speed, so that the temperature in the cold storage reaches the first target set temperature.

[0045] It should be noted that under the low-temperature mode control logic, the control logic tends to control the compressor to operate at high frequency and the fan to operate synchronously at high frequency, and adopts a large temperature difference and intermittent powerful refrigeration mode, aiming to quickly reduce the temperature and maintain a deep low temperature. Specifically, the high frequency range adopted under high frequency operation is: 90Hz to 110Hz; that is, the first frequency is a value between 90Hz and 110Hz; mainly in the low-temperature mode, the cold load of the unit is large, plus the fact that the unit has a very low evaporation temperature in the low-temperature mode, the output capacity of the unit is small, so it is necessary to enter high frequency operation at the initial stage to ensure the output capacity of the unit.

[0046] According to some embodiments of the present application, step S300 is further illustrated as follows: controlling the refrigeration cycle unit to start and perform refrigeration treatment on the cold storage according to the target control logic, including but not limited to the following steps: in the case that the target control logic is the medium-temperature mode control logic, obtaining a second frequency and a second air speed from the medium-temperature mode control logic; wherein the second frequency is less than the first frequency, and the second air speed is less than the first air speed; controlling the compressor to operate according to the second frequency and controlling the fan to operate according to the second air speed, so that the temperature in the cold storage reaches the first target set temperature.

[0047] It can be understood that the medium-temperature mode control logic adopts a control strategy between the low-temperature mode control logic and the high-temperature mode control logic. Specifically, under the medium-temperature mode control logic, the compressor operates at 40Hz to 90Hz, that is, the second frequency is a value between 40Hz and 90Hz; under the medium-temperature mode control logic, the cold load of the refrigeration cycle unit is in the intermediate stage, and the operating frequency of the compressor can be in this range according to different specific set temperatures.

[0048] According to some embodiments of the present application, step S300 is further illustrated as follows: controlling the refrigeration cycle unit to start and perform refrigeration treatment on the cold storage according to the target control logic, including but not limited to the following steps: in the case that the target control logic is the high-temperature mode control logic, obtaining a third frequency and a third air speed from the high-temperature mode control logic; wherein the third frequency is less than the second frequency, and the third air speed is less than the second air speed; controlling the compressor to operate according to the third frequency and controlling the fan to operate according to the third air speed, so that the temperature in the cold storage reaches the first target set temperature.

[0049] It can be understood that, under the high-temperature mode control logic, the compressor is controlled to operate at a low frequency and the fan is controlled to operate at a low speed, and a small temperature difference and continuous and smooth operation are adopted, aiming to achieve accurate temperature control and energy-saving operation. The low frequency range adopted under the low frequency operation is 15Hz to 40Hz, because in the high-temperature mode, the cold load of the refrigeration cycle unit is small, and the capacity output of the refrigeration cycle unit increases due to the increase of the evaporation temperature when the refrigeration cycle unit is in the high-temperature mode, so the refrigeration cycle unit can operate at a low frequency.

[0050] According to some embodiments of the present application, step S400 is further illustrated as follows: performing refrigeration adjustment treatment according to the temperature fluctuation, including but not limited to steps S410 to S420.

[0051] Step S410: in the case that the temperature fluctuation is a continuous temperature rise, controlling the refrigeration cycle unit to perform refrigeration strengthening treatment to reduce the temperature in the cold storage to the first target set temperature.

[0052] It can be understood that when the frequent opening of the door causes the temperature in the warehouse to rise, intensive refrigeration can be entered to increase the refrigeration capacity.

[0053] Alternatively, step S420: in the case of a temperature fluctuation condition of a continuously rising temperature, mode switching processing and refrigeration processing are performed to reduce the temperature in the warehouse to the first target set temperature.

[0054] It can be understood that after the cold storage temperature control system starts the selected mode, it is not fixed, and the controller also continuously monitors the feedback of the real-time temperature in the warehouse of the temperature sensor in the warehouse, analyzes the real-time temperature in the warehouse to obtain the temperature change trend, and determines the temperature fluctuation condition, so as to evaluate the temperature zone stability under the current operation mode. If the analysis finds that the real-time temperature in the warehouse continuously deviates from the original set temperature zone range (low temperature zone range, or medium temperature zone range, or high temperature zone range) and tends to enter another temperature zone threshold range, and the state lasts for a certain period of time, the controller can automatically perform intensive refrigeration, mainly to increase the refrigeration capacity, and generate a prompt information, or automatically start the mode re-determination process under the preset safety strategy, seamlessly switch to a more suitable control mode, so as to realize self-adaptive adjustment. For example, under the medium temperature mode control logic, the temperature in the cold storage tends to increase to the high temperature interval range determined by the second temperature threshold and the third temperature threshold, and then it can be switched to the low temperature mode control logic to quickly reduce the temperature in the cold storage and then switched back to the medium temperature mode control logic. For example: under the high temperature mode control logic, the temperature in the cold storage rises above the third temperature threshold, and then it can be switched to the low temperature mode control logic to quickly reduce the temperature in the cold storage and then switched back to the high temperature mode control logic. It can be seen that the cold storage temperature control system of the present application can intelligently adapt to various cold storage application scenarios by integrating multiple sets of preset logic and intelligent judgment switching mechanism, so that a single refrigeration cycle unit hardware platform can be intelligently adapted to various cold storage application scenarios.

[0055] The embodiment of the present application can obtain the temperature fluctuation condition in the cold storage based on real-time detection and analysis through step S410 or step S420, and adjust the temperature to restore the real-time temperature in the warehouse to the first target set temperature, so as to realize an intelligent temperature control mechanism to cope with various application scenarios.

[0056] The embodiment of the application, through steps S100 to S400, in the process of working of the cold storage temperature control system, the controller first acquires the first target set temperature input through the user terminal; mode determination processing is performed according to the first target set temperature and the preset temperature zone threshold information, and the target control logic is determined from a plurality of candidate control logics; the candidate control logic includes: low-temperature mode control logic, medium-temperature mode control logic and high-temperature mode control logic; the refrigeration circulating unit is controlled to start and perform refrigeration processing on the cold storage according to the target control logic, so that the temperature in the cold storage reaches the first target set temperature; the real-time temperature in the cold storage continuously collected by the temperature sensor is acquired, and after the temperature in the cold storage reaches the first target set temperature, data analysis is performed on the real-time temperature in the cold storage to obtain the temperature fluctuation, and refrigeration adjustment processing is performed according to the temperature fluctuation to restore the real-time temperature in the cold storage to the first target set temperature; the target control logic of the refrigeration circulating unit is determined through the input first target set temperature, and the refrigeration circulating unit works in the target control logic, realizing different temperature zone functions such as freezing or refrigeration; and the temperature fluctuation in the cold storage is obtained based on real-time detection and analysis, and temperature adjustment is performed to restore the real-time temperature in the cold storage to the first target set temperature, realizing an intelligent temperature control mechanism to cope with various application scenarios. Therefore, the application can realize intelligent temperature control of the cold storage to cope with various application scenarios.

[0057] According to some embodiments of the application, the cold storage temperature control method of the application further includes steps S500 to S600.

[0058] Step S500: in response to the second target set temperature updated through the user terminal, mode determination processing is performed again according to the second target set temperature and the preset temperature zone threshold information, and the target control logic is determined again from a plurality of candidate control logics.

[0059] Step S600: the working mode of the refrigeration circulating unit is switched to the target control logic, and the refrigeration circulating unit is controlled to start and perform refrigeration processing on the cold storage according to the target control logic, so that the temperature in the cold storage reaches the second target set temperature.

[0060] It can be understood that the second target set temperature is different from the first target set temperature.

[0061] It can be understood that the freezer originally used as a freezing chamber needs to be used as a refrigeration chamber, or the freezer originally used as a refrigeration chamber needs to be used as a freezing chamber, and the target set temperature needs to be adjusted. Through steps S500 to S600, the engineer can configure the second target set temperature through the input interface of the user terminal, and the controller responds to the second target set temperature updated through the user terminal to re-determine the target control logic from the plurality of candidate control logics according to the second target set temperature and the preset temperature zone threshold information; the candidate control logic includes: low-temperature mode control logic, medium-temperature mode control logic and high-temperature mode control logic; and then the working mode of the refrigeration cycle unit is switched to the target control logic, the refrigeration cycle unit is controlled to start and perform refrigeration processing on the freezer based on the target control logic, so that the temperature in the freezer reaches the second target set temperature; thereby switching the application scene of the freezer.

[0062] As an example, the freezer temperature control method provided by the embodiment of the application is described. In actual application, the user only needs to configure the target set temperature required in the freezer on the input interface of the user terminal, for example, set to -18°C. After the system receives the target set temperature, the controller automatically judges that the target set temperature belongs to the low-temperature interval range, and then calls the control parameters in the built-in low-temperature mode control logic. Under this low-temperature mode control logic, the controller outputs a control signal to make the full direct-current variable frequency compressor start and run at a higher frequency, and the condenser fan and the evaporator fan also cooperate at a higher speed, and the refrigeration cycle unit quickly reduces the temperature in the freezer to the target value at a larger power. When the temperature in the freezer reaches -18°C, the refrigeration cycle unit is controlled to enter the maintenance stage, and the running frequency is dynamically adjusted according to the load change, but the overall intermittent strong refrigeration characteristics are maintained to ensure temperature stability. In addition, if the user modifies the target set temperature to 2°C later, the controller automatically judges that the target set temperature belongs to the medium-temperature interval range, and immediately switches to the medium-temperature mode control logic. The controller controls the compressor to reduce the running frequency, and the fan is also adjusted to medium speed, and the refrigeration cycle unit is switched to a more stable continuous running mode to accurately maintain the temperature in the freezer around 2°C. The energy consumption under the medium-temperature mode control logic is significantly lower than that under the low-temperature mode. If the door of the freezer is frequently opened to introduce a large amount of hot air, resulting in a significant and continuous upward trend of the temperature in the freezer, the controller can automatically strengthen the refrigeration output or prompt the user after monitoring this change trend, or even temporarily cut in a more efficient mode for rapid temperature recovery, and then return to the original mode. This implementation enables a refrigeration cycle unit to meet various storage requirements such as freezing, refrigeration, and constant temperature, without manual intervention in mode selection, and always maintains high efficiency, energy saving and temperature stability.

[0063] The refrigeration units currently on the market are usually designed for specific temperature zones, such as units dedicated to freezing or units dedicated to refrigeration. Even some units that claim to have multi-temperature zone functions rely on manual selection for mode switching, and cannot intelligently identify and adaptively switch according to the actual set temperature. The operator needs to have certain professional knowledge to judge the required mode for the current goods type, and if the selection is improper, it may lead to decreased control precision, increased energy consumption, or even damage to the goods. In addition, the fixed mode control strategy cannot cope with the dynamic changes of the heat load in the warehouse, and when the ambient temperature fluctuates or the goods are frequently in and out, the stability of the set temperature is poor, the compressor starts and stops frequently, affecting the service life and energy efficiency of the equipment. The main shortcomings of the prior art are: first, the degree of intelligence is low, relying on manual experience, and the operation is not convenient and prone to errors; second, the control strategy is single, and cannot balance the optimal energy efficiency and temperature stability under different working conditions in a wide temperature range; third, it lacks adaptive adjustment capability and performs poorly in the face of dynamic application scenarios.

[0064] The cold storage temperature control system and the cold storage temperature control method provided by the embodiments of the present application can solve the above problems and achieve many beneficial effects: first, the cold storage temperature control system and the cold storage temperature control method solve the core problem that a single refrigeration unit cannot intelligently adapt to different warehouse temperature requirements, through automatic temperature zone identification and mode switching, the dependence on the professional knowledge of the operator is reduced, and the problems of temperature control failure or excessive energy consumption caused by manual mode selection errors are avoided, greatly improving the ease of use and reliability of the equipment. Second, by tailoring differentiated control strategies for different temperature zones, they can operate under their respective optimal conditions, such as low-temperature mode to ensure rapid cooling capacity, high-temperature mode to focus on accurate temperature control and energy saving, and medium-temperature mode to achieve a balance, thereby achieving a higher overall energy efficiency ratio in the entire operating range and effectively reducing operating costs. Third, the adaptive monitoring and switching capability of the cold storage temperature control system and the cold storage temperature control method enables them to dynamically respond to changes in the heat load in the warehouse, automatically maintain temperature stability, reduce the adverse effects of temperature fluctuations on the quality of stored goods, and reduce the frequent starting and stopping of the compressor, which is beneficial to prolonging the service life of the equipment. Fourth, the technical solution realizes the main functions based on software logic, has little change to the hardware, mainly relies on controller algorithm upgrade, and is easy to apply and promote on the existing variable frequency unit platform, which helps to launch more adaptable products at a lower cost. Finally, the cold storage temperature control method improves the intelligent level of the refrigeration cycle unit and the user experience, meets the needs of modern cold storage for fine and intelligent management, and has significant energy-saving, environmental protection and social and economic benefits.

[0065] As shown in Figure 4 The present application also provides a controller, which comprises:

[0066] The processor 401 can be implemented in a manner of a general central processing unit (CPU), a microprocessor, an application specific integrated circuit (ASIC), or one or more integrated circuits, and is configured to execute related programs to implement the technical solutions provided by the embodiments of the present application.

[0067] The memory 402 can be implemented in a manner of a read only memory (ROM), a static storage device, a dynamic storage device, or a random access memory (RAM). The memory 402 can store an operating system and other application programs. When the technical solutions provided by the embodiments of the present application are implemented by software or firmware, the related program codes are stored in the memory 402 and are called and executed by the processor 401 to implement the cold storage temperature control method of the embodiments of the present application.

[0068] The input / output interface 403 is configured to implement information input and output.

[0069] The communication interface 404 is configured to implement communication interaction between the device and other devices. The communication can be implemented in a wired manner (for example, a USB, a network cable, etc.) or in a wireless manner (for example, a mobile network, WIFI, Bluetooth, etc.).

[0070] The bus 405 is configured to transmit information between various components (for example, the processor 401, the memory 402, the input / output interface 403, and the communication interface 404) of the device.

[0071] The processor 401, the memory 402, the input / output interface 403, and the communication interface 404 are connected to each other in the device through the bus 405.

[0072] The embodiments of the present application also provide a storage medium, which is a computer readable storage medium. The storage medium stores a computer program. The computer program is executed by a processor to implement the cold storage temperature control method.

[0073] Memory, as a non-transitory computer-readable storage medium, can be used to store non-transitory software programs and non-transitory computer-executable programs. In addition, the memory can include a high-speed random access memory and can also include a non-transitory memory, such as at least one magnetic disk storage device, a flash memory device, or other non-transitory solid-state memory device. In some embodiments, the memory can optionally include a memory disposed remotely with respect to the processor, which can be connected to the processor through a network. Examples of the above network include, but are not limited to, the Internet, an intranet, a local area network, a mobile communication network, and a combination thereof. The above-described device embodiments are merely illustrative, and units described as separate components can or can not be physically separated, implemented in one place, or distributed to multiple network units. Part or all of the modules can be selected according to actual needs to achieve the purpose of the present embodiment.

[0074] Those of ordinary skill in the art can understand that all or some steps in the above disclosed method and system can be implemented as software, firmware, hardware, and appropriate combinations thereof. Some or all physical components can be implemented as software executed by a processor, such as a central processing unit, a digital signal processor, or a microprocessor, or as hardware, or as an integrated circuit, such as an application-specific integrated circuit. Such software can be distributed on a computer-readable medium, which can include computer storage media (or non-transitory media) and communication media (or transitory media). As known to those of ordinary skill in the art, the term computer storage media includes volatile and non-volatile, removable and non-removable media implemented in any method or technology for storage of information such as computer readable instructions, data structures, program modules or other data. Computer storage media includes, but is not limited to, RAM, ROM, EEPROM, flash memory or other memory technology, CD-ROM, digital versatile disks (DVD) or other optical disk storage, magnetic cassettes, magnetic tapes, magnetic disk storage or other magnetic storage devices, or any other medium that can be used to store desired information and can be accessed by a computer. In addition, as known to those of ordinary skill in the art, communication media generally includes computer readable instructions, data structures, program modules or other data in modulated data signals such as carrier waves or other transport mechanisms, and can include any information delivery medium.

[0075] The above is a specific description of the preferred embodiments of the present application, but the present application is not limited to the above embodiments. Those skilled in the art can make various equivalent modifications or replacements without departing from the spirit of the present application, and these equivalent modifications or replacements are all included in the scope defined by the present application.

Claims

1. A cold storage temperature control method characterized by, A controller applied to a cold storage temperature control system; The cold storage temperature control system comprises a controller, a temperature sensor electrically connected with the controller, a refrigeration circulating unit and a user terminal; the refrigeration circulating unit further comprises a compressor and a fan; the method comprises: obtaining a first target set temperature input through the user terminal; determining a target control logic from a plurality of candidate control logics according to the first target set temperature and preset temperature zone threshold information; the candidate control logic comprises a low-temperature mode control logic, a medium-temperature mode control logic and a high-temperature mode control logic; the low-temperature mode control logic is used to control the compressor to operate according to a first frequency and control the fan to operate according to a first wind speed, so that the temperature in the cold storage reaches the first target set temperature; the medium-temperature mode control logic is used to control the compressor to operate according to a second frequency and control the fan to operate according to a second wind speed, so that the temperature in the cold storage reaches the first target set temperature; the high-temperature mode control logic is used to control the compressor to operate according to a third frequency and control the fan to operate according to a third wind speed, so that the temperature in the cold storage reaches the first target set temperature; wherein the second frequency is less than the first frequency, and the second wind speed is less than the first wind speed; the third frequency is less than the second frequency, and the third wind speed is less than the second wind speed; controlling the refrigeration circulating unit to start and perform refrigeration processing on the cold storage according to the target control logic, so that the temperature in the cold storage reaches the first target set temperature; obtaining a real-time temperature in the cold storage continuously collected by the temperature sensor, and performing data analysis on the real-time temperature in the cold storage to obtain a temperature fluctuation condition after the temperature in the cold storage reaches the first target set temperature, and performing refrigeration adjustment processing according to the temperature fluctuation condition, so that the real-time temperature in the cold storage returns to the first target set temperature; wherein the refrigeration adjustment processing according to the temperature fluctuation condition comprises: in the case that the temperature fluctuation condition is a continuous temperature rise, controlling the refrigeration circulating unit to perform refrigeration strengthening processing, so that the temperature in the cold storage decreases to the first target set temperature; or in the case that the temperature fluctuation condition is a continuous temperature rise, performing mode switching processing and refrigeration processing, so that the temperature in the cold storage decreases to the first target set temperature.

2. The cold storage temperature control method of claim 1, wherein, The preset temperature zone threshold information comprises a first temperature threshold, a second temperature threshold and a third temperature threshold; wherein the second temperature threshold is greater than the first temperature threshold; and the third temperature threshold is greater than the second temperature threshold; The mode determination processing according to the first target set temperature and the preset temperature zone threshold information to determine the target control logic from the plurality of candidate control logics comprises: performing threshold comparison processing on the target set temperature and the preset temperature zone threshold information to obtain a comparison result; in the case that the comparison result indicates that the target set temperature is less than or equal to the first temperature threshold, determining the low-temperature mode control logic as the target control logic; determining the medium-temperature mode control logic as the target control logic in a case where the comparison result indicates that the target set temperature is greater than the first temperature threshold and less than the second temperature threshold; determining the high-temperature mode control logic as the target control logic in a case where the comparison result indicates that the target set temperature is greater than or equal to the second temperature threshold and less than the third temperature threshold.

3. The cold storage temperature control method of claim 1, wherein, controlling the refrigeration cycle unit to start and perform refrigeration processing on the cold storage according to the target control logic, including: in a case where the target control logic is the low-temperature mode control logic, obtaining a first frequency and a first air speed from the low-temperature mode control logic; controlling the compressor to operate according to the first frequency and the fan to operate according to the first air speed, so that the temperature in the cold storage reaches the first target set temperature.

4. The cold storage temperature control method according to claim 3, characterized by, controlling the refrigeration cycle unit to start and perform refrigeration processing on the cold storage according to the target control logic, including: in a case where the target control logic is the medium-temperature mode control logic, obtaining a second frequency and a second air speed from the medium-temperature mode control logic; the second frequency is less than the first frequency, and the second air speed is less than the first air speed; controlling the compressor to operate according to the second frequency and the fan to operate according to the second air speed, so that the temperature in the cold storage reaches the first target set temperature.

5. The cold store temperature control method of claim 4, wherein, controlling the refrigeration cycle unit to start and perform refrigeration processing on the cold storage according to the target control logic, including: in a case where the target control logic is the high-temperature mode control logic, obtaining a third frequency and a third air speed from the high-temperature mode control logic; the third frequency is less than the second frequency, and the third air speed is less than the second air speed; controlling the compressor to operate according to the third frequency and the fan to operate according to the third air speed, so that the temperature in the cold storage reaches the first target set temperature.

6. The cold store temperature control method of claim 1, wherein, the method further includes: in response to a second target set temperature updated through the user terminal, re-determining the target control logic from the plurality of candidate control logics according to the second target set temperature and preset temperature zone threshold information; switching the working mode of the refrigeration cycle unit to the target control logic, and controlling the refrigeration cycle unit to start and perform refrigeration processing on the cold storage according to the target control logic, so that the temperature in the cold storage reaches the second target set temperature.

7. A cold store temperature control system, characterised in that, comprising: a controller, a temperature sensor electrically connected to the controller, a refrigeration cycle unit, and a user terminal; the controller is configured to execute the cold storage temperature control method according to any one of claims 1 to 6.

8. A controller characterized by comprising: comprising at least one processor and a memory connected to the at least one processor in communication; the memory stores instructions executable by the at least one processor, and the instructions are executed by the at least one processor to enable the at least one processor to execute the cold storage temperature control method according to any one of claims 1 to 6.

9. A computer-readable storage medium, characterized in that, The computer readable storage medium stores computer executable instructions for causing a computer to perform the cold storage temperature control method according to any one of claims 1 to 6.

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