Refrigeration device, control method and control device therefor, and computer storage medium

Abstract

The application discloses a control method and device of a refrigeration equipment, the refrigeration equipment and a computer readable storage medium. The method comprises the following steps: obtaining a refrigeration state of the refrigeration equipment, the refrigeration state comprising a first working state and a second working state; determining corresponding defrosting reference parameters according to the refrigeration state, the first working state and the second working state corresponding to different defrosting reference parameters; determining target working parameters of a defrosting device according to the defrosting reference parameters; and controlling the defrosting device to work according to the target working parameters. The method can make the defrosting of the refrigeration equipment more targeted, improve the defrosting effect and save energy.

Description

Technical Field

[0001] This application relates to the technical field of refrigeration equipment, and more specifically, to a control method, control device, refrigeration equipment, and computer-readable storage medium for refrigeration equipment. Background Technology

[0002] Refrigeration equipment, such as household refrigerators, vehicle refrigerators, and industrial refrigeration units, is widely used in related industries and brings convenience. However, during the refrigeration process, moisture inside the equipment condenses into frost on the evaporator surface, hindering heat exchange and affecting the cooling effect. Therefore, to better ensure the cooling effect, refrigeration equipment on the market is generally equipped with a defrosting function. However, during the defrosting process, the evaporator is usually simply heated at certain intervals, which cannot take into account the actual condition of the evaporator, resulting in poor defrosting effect. Summary of the Invention

[0003] In view of this, this application proposes a control method, control device, refrigeration equipment, and computer-readable storage medium for refrigeration equipment to improve the above-mentioned technical problems.

[0004] In a first aspect, embodiments of this application provide a control method applied to a refrigeration device equipped with a defrosting device. The refrigeration device can selectively operate in a first operating state or a second operating state, with the cooling efficiency of the first operating state being higher than that of the second operating state. The control method includes: acquiring the cooling state of the refrigeration device, including a first operating state and a second operating state; determining corresponding defrosting reference parameters based on the cooling state, with the first and second operating states corresponding to different defrosting reference parameters; determining target operating parameters for the defrosting device based on the defrosting reference parameters; and controlling the defrosting device to operate according to the target operating parameters.

[0005] Secondly, embodiments of this application provide a control device applied to a refrigeration device equipped with a defrosting device. The refrigeration device further includes: a control module, a defrosting reference parameter acquisition module, a fan status acquisition module, a refrigeration status acquisition module, an evaporator status acquisition module, and a processing module. The control module controls the defrosting device to operate according to target operating parameters. The defrosting reference parameter acquisition module acquires the defrosting reference parameters, which include a differential pressure rate reference value and either an initial defrost cycle or an initial defrost heating duration. The fan status acquisition module acquires the fan status, including an on state and a off state. The fan status acquisition module also acquires a first actual air pressure value, the duration for which the first actual air pressure value exceeds a differential pressure threshold, a second actual air pressure value, and the duration for which the second actual air pressure value exceeds the differential pressure threshold. The refrigeration status acquisition module acquires the refrigeration status, including a first operating state and a second operating state. The evaporator status acquisition module acquires the operating status of a first evaporator or a second evaporator, including an on state and a off state. The evaporator status acquisition module also identifies a target evaporator among the first and second evaporators. The processing module is used to calculate the target cycle of the N+1th defrosting cycle using the first calculation formula based on the actual differential pressure rate, or to calculate the target defrosting heating time of the N+1th defrosting cycle using the second calculation formula based on the actual differential pressure rate. The processing module is also used to calculate the actual differential pressure rate based on Tk, V11k, Tg, and V11g.

[0006] Thirdly, embodiments of this application also provide a refrigeration device equipped with a defrosting apparatus. The refrigeration device further includes one or more processors, a memory, and one or more application programs, wherein the one or more application programs are stored in the memory and configured to be executed by the one or more processors, and the one or more application programs are configured to perform the cooking control method as described above.

[0007] Fourthly, embodiments of this application also provide a computer-readable storage medium storing program code, which is invoked by a processor to execute the above-described cooking control method.

[0008] Compared to existing technologies, the control method provided in this application allows the refrigeration equipment to selectively operate in either a first or second working state to adapt to different refrigeration needs and environments, enabling more targeted refrigeration operations. This ensures refrigeration effectiveness while reducing energy consumption, thus improving the flexibility and reliability of the refrigeration equipment. Furthermore, different refrigeration states correspond to different defrosting reference parameters. By acquiring the refrigeration state, the refrigeration equipment automatically determines the corresponding defrosting reference parameters. This achieves automated control of the defrosting process, reducing the need for manual monitoring and intervention, and improving the convenience of defrosting. Additionally, the corresponding defrosting reference parameters are more targeted, improving defrosting efficiency, avoiding unnecessary energy consumption, and reducing over-defrosting or poor defrosting. Further, the refrigeration equipment determines the target operating parameters of the defrosting device based on the defrosting reference parameters. Therefore, in actual defrosting operations, the target operating parameters can be automatically adjusted according to different defrosting environments and actual defrosting effects. Essentially, this is an automatic correction and optimization process for the target parameters, resulting in better defrosting performance and lower defrosting costs. Attached Figure Description

[0009] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0010] Figure 1 This is a schematic diagram of the structure of a refrigeration device provided in one embodiment of this application.

[0011] Figure 2 This is a schematic diagram of the structure of a refrigeration device provided in one embodiment of the refrigeration equipment of this application.

[0012] Figure 3 This is a flowchart of a control method provided in an embodiment of this application.

[0013] Figure 4 This is a flowchart of a control method provided in another embodiment of this application.

[0014] Figure 5 This is a flowchart of a control method provided in another embodiment of this application.

[0015] Figure 6 This is a structural block diagram of the control device for a refrigeration equipment provided in an embodiment of this application.

[0016] Figure 7 This is a structural block diagram of a refrigeration device provided in one embodiment of this application.

[0017] Figure 8 This is a structural block diagram of a computer-readable storage medium provided in an embodiment of this application. Detailed Implementation

[0018] The embodiments of this application are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0019] To enable those skilled in the art to better understand the solutions of this application, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0020] Car refrigerators, as a convenient refrigeration device, have become one of the main components of automobiles, offering advantages such as small size and rapid cooling. However, current car refrigerators typically employ the same defrosting method during the defrosting process, such as the same defrosting cycle and / or the same defrosting heating time. In actual defrosting operations, consistently using the same defrosting method for different cooling needs (such as deep cooling or normal cooling) or different levels of frost can lead to over-defrosting or incomplete defrosting, resulting in unstable defrosting performance and higher energy consumption and costs.

[0021] To address the aforementioned technical problems, the inventors have proposed a control method, control device, refrigeration equipment, and computer storage medium for a refrigeration device, as provided in this application. This method is applied to a refrigeration equipment equipped with a defrosting device. The refrigeration equipment can selectively operate in a first working state or a second working state, with the cooling efficiency of the first working state being higher than that of the second working state. The control method includes: acquiring the refrigeration state of the refrigeration equipment, including a first working state and a second working state; determining corresponding defrosting reference parameters based on the refrigeration state, with the first and second working states corresponding to different defrosting reference parameters; determining target operating parameters for the defrosting device based on the defrosting reference parameters; and controlling the defrosting device to operate according to the target operating parameters.

[0022] In the aforementioned control method, the refrigeration equipment can selectively operate in either a first or second working state to adapt to different refrigeration needs and environments, enabling more targeted refrigeration operations. This ensures refrigeration effectiveness while reducing energy consumption and improving the flexibility and reliability of the refrigeration equipment. Simultaneously, different refrigeration states require different defrosting reference parameters. By acquiring the refrigeration state, the refrigeration equipment automatically determines the corresponding defrosting reference parameters. On one hand, this enables automated control of the defrosting process, reducing the need for manual monitoring and intervention, and improving the convenience of defrosting. On the other hand, the corresponding defrosting reference parameters are more targeted, improving defrosting efficiency, avoiding unnecessary energy consumption, and reducing over-defrosting or poor defrosting. Furthermore, the refrigeration equipment determines the target operating parameters of the defrosting device based on the defrosting reference parameters. Therefore, in actual defrosting operations, it can automatically adjust the target operating parameters according to different defrosting environments and actual defrosting effects. Essentially, this is an automatic correction and optimization process of the target parameters, resulting in better defrosting effects and lower defrosting costs.

[0023] The following describes the application environment of the cooking control method provided in this invention.

[0024] Please refer to Figure 1 , Figure 1 This is a schematic diagram illustrating an application scenario of a control method for a refrigeration device provided in an embodiment of the present invention. The control method for the refrigeration device is applied to a refrigeration device, such as... Figure 1The diagram shows a schematic of a refrigeration device 100 provided in one embodiment of this application. The refrigeration device 100 provided in this embodiment is equipped with a defrosting device 10 and is suitable for various application scenarios, such as vehicle refrigerators, household refrigerators, and industrial refrigeration equipment. In this embodiment, the refrigeration device 100 can specifically be a vehicle refrigerator, which may have a deep-cooling compartment 101 and a regular compartment 102. The deep-cooling compartment 101 is used for deep cooling and corresponds to an evaporator with a higher rated power, resulting in faster cooling speed and higher cooling efficiency. The regular compartment 102 is used for regular cooling and corresponds to an evaporator with a relatively lower rated power, resulting in lower cooling efficiency than the deep-cooling compartment 101. It should be noted that the deep-cooling compartment 101 and the regular compartment 102 can be spaced apart or connected to each other; this embodiment does not impose specific limitations on this. It is understood that when the deep-cooling compartment 101 and the regular compartment 102 are connected, the refrigeration device 100 activates the evaporator corresponding to deep cooling during deep cooling. In other embodiments, deep cooling and normal cooling may share the same evaporator. During deep cooling, the evaporator is turned on and operates at higher power to improve cooling efficiency, while during normal cooling, the evaporator operates at lower power. For ease of explanation, in this embodiment, the deep cooling compartment 101 and the normal cooling compartment 102 are separated, and each is equipped with a corresponding evaporator for deep cooling and normal cooling.

[0025] The refrigeration equipment 100 includes a housing 103, a refrigeration unit 20, and a defrosting unit 10. A partition 104 is provided inside the housing 103, dividing the housing 103 into a refrigeration area and an installation area. The refrigeration area includes the aforementioned cryogenic compartment 101 and a general compartment 102, which can be used to store items requiring refrigeration or freezing. The installation area is used to install electrical components, specifically the aforementioned refrigeration unit and defrosting unit. The refrigeration equipment 100 also includes a return air panel 105, which is located in the refrigeration area. A return air vent 106 is opened at the bottom of the return air panel 105, connecting to the installation area. An air outlet 107 is provided on the partition 104. After the outside air enters the inside of the casing 103, it flows towards the cooling area. Some of the airflow is directly discharged to the outside from the air outlet 107, and some of the airflow enters the installation area through the return air inlet 106 to participate in the cooling of the cooling device 20 (for example, blowing air onto the evaporator).

[0026] In this embodiment, the refrigeration device 100 has a first operating state and a second operating state, wherein the refrigeration efficiency of the first operating state is higher than that of the second operating state. Specifically, the first operating state is a deep cooling state, in which the refrigeration device 20 cools the deep-cooled compartment 101. At this state, the refrigeration device 20 has higher power, faster cooling speed, and lower cooling temperature. For example, the cooling temperature of the first operating state can be less than or equal to -10℃. As an example, the cooling temperature of the first operating state can be -35℃, -30℃, -20℃, -15℃, -10℃, etc., and this embodiment does not impose specific limitations on this. The second operating state is a normal cooling state, in which the refrigeration device 20 cools the normal compartment 102. At this state, the refrigeration device 20 has lower power, lower energy consumption compared to the first operating state, and higher cooling temperature. For example, the cooling temperature of the second operating state can be greater than -10℃. As an example, the cooling temperature of the first operating state can be -5℃, 0℃, 10℃, etc. By setting the first and second working states described above, the cooling needs of users for different items can be met, resulting in better cooling performance and lower energy consumption. It is understood that this embodiment is merely an example, and the temperatures of the first and second working states can be other ranges; this embodiment does not impose specific limitations on these ranges.

[0027] In this embodiment, the refrigeration device 20 is disposed inside the housing 103 and is used to refrigerate the food in the cryogenic compartment 101 and the general compartment 102. As an example, the refrigeration device 20 is disposed at the bottom or outer periphery of the cryogenic compartment 101 and the general compartment 102. Please refer to [link / reference]. Figure 2 The refrigeration device 20 may specifically include a compressor 21, a condenser 22, a first evaporator 23, and a second evaporator 24. The compressor 21 and condenser 22 are both housed within the casing 103. The first evaporator 23 and the second evaporator 24 are connected to the condenser 22 via pipes. The high-temperature, high-pressure gaseous refrigerant compressed by the compressor 21, after condensation by the condenser 22, forms a high-pressure liquid refrigerant that enters the first evaporator 23 and the second evaporator 24 to evaporate and absorb heat, thereby lowering the temperature of the cryogenic chamber 101 and / or the ordinary chamber 102, achieving the purpose of refrigeration. As a specific example, the first evaporator 23 may be located at the bottom of the cryogenic chamber 101 and used to cool the cryogenic chamber 101 when the refrigeration device 100 is operating in a first working state. The second evaporator 24 may be located at the bottom of the ordinary chamber 102 and used to cool the ordinary chamber 102 when the refrigeration device 100 is operating in a second working state.

[0028] In this embodiment, the refrigeration device 20 may further include a fan 25, which is used to supply air to the first evaporator 23 and / or the second evaporator 24. The fan 25 is specifically disposed within the housing 103 and spaced apart from the first evaporator 23 and the second evaporator 24. The fan 25 is used to accelerate the heat exchange process by increasing the airflow speed, thereby improving refrigeration efficiency. The fan 25 also helps prevent frost formation on the first evaporator 23 and the second evaporator 24 by continuously circulating air, reducing condensation on the cold surfaces, thus maintaining the efficient operation of the first evaporator 23 and the second evaporator 24. In some embodiments, the fan 25 has different operating speeds, such as high, medium, and low speeds. When the fan 25 operates at different speeds, the rotation speed of the fan blades is not the same. It is understood that the higher the speed of the fan 25, the faster the rotation speed of the fan blades. In this embodiment, there is one fan 25. In some other embodiments, the refrigeration device 20 may or may not be equipped with at least one fan 25, and this embodiment does not impose any specific restrictions on this.

[0029] Please see Figure 2 In this embodiment, the refrigeration device 20 may further include a dryer filter 26, a gas-liquid separator 27, an electromagnetic flow valve 28, and a capillary drain pipe 29 to ensure stable operation of the refrigeration equipment and improve refrigeration efficiency. Specifically, the dryer filter 26 is used to absorb moisture in the refrigeration pipeline and to prevent impurities from passing through, thereby avoiding ice blockage and dirt blockage in the pipeline of the refrigeration equipment. It can be installed between the condenser 22 and the electromagnetic flow regulating valve 28. The gas-liquid separator 27 is used to separate gaseous refrigerant and liquid refrigerant. It can be installed between the condenser 26 and the first evaporator 23 and the second evaporator 24 to ensure that only liquid refrigerant enters the first evaporator 23 or the second evaporator 24, thereby improving refrigeration efficiency. In other embodiments, the gas-liquid separator 27 may also be installed between the first evaporator 23, the second evaporator 24, and the compressor 21 to prevent liquid refrigerant from entering the compressor 21 and avoid liquid slugging. Liquid slugging can be understood as the fact that liquid refrigerant is incompressible, and when liquid refrigerant enters the compressor 21, it can easily cause safety problems, such as the compressor 21 overheating and being damaged or exploding.

[0030] An electromagnetic flow regulating valve 28 is disposed between the condenser 22 and the first evaporator 23 and the second evaporator 24. It is used to regulate the amount of refrigerant entering the first evaporator 23 and the second evaporator 24 according to a control program. The number of electromagnetic flow regulating valves 28 can be one or two; this embodiment does not impose a specific limitation. For example, when there is only one electromagnetic flow regulating valve 28, it is connected to the first evaporator 23 and the second evaporator 24 respectively through two capillary drain pipes 29. The capillary drain pipes 29 are used to reduce the pressure of the refrigerant using a throttling effect, so that the high-pressure liquid refrigerant condensed by the condenser 22 becomes low-pressure liquid refrigerant and enters the first evaporator 23 or the second evaporator 24. The diameters of the two capillary drain pipes 29 can be the same or different; this embodiment does not impose a specific limitation. As an example only, the capillary drain pipe 29 connected to the first evaporator 23 has a larger diameter, which allows the refrigerant to enter the first evaporator 23 more quickly and provides more refrigerant to meet the needs of deep cooling. The capillary drain pipe 29 connected to the second evaporator 24 has a smaller diameter, which meets the needs of ordinary cooling while saving refrigerant. In this embodiment, there are two electromagnetic flow regulating valves 28. One electromagnetic flow regulating valve 28 is connected between the first evaporator 23 and the condenser 22 through a capillary drain pipe 229, and the other electromagnetic flow regulating valve 28 is connected between the second evaporator 24 and the condenser 22 through a capillary drain pipe 29, thereby controlling the amount of refrigerant entering the first evaporator 23 and the second evaporator 24 respectively.

[0031] In this embodiment, the defrosting device 10 is disposed inside the casing 103, and is used to defrost the first evaporator 23 / second evaporator 24 at certain intervals. Specifically, the defrosting device 23 includes a first defrosting mechanism 11 and a second defrosting mechanism 12. The first defrosting mechanism 11 is used to defrost the first evaporator 23, and the second defrosting mechanism 12 is used to defrost the second evaporator 24. This embodiment does not limit the specific structure of the first defrosting mechanism 11 and the second defrosting mechanism 12.

[0032] In this embodiment, the refrigeration device 100 may further include a controller (not shown) and a timing device (not shown). The controller is used to control the operation of the refrigeration device 100, for example, to control the operation of the defrosting device 10 and the refrigeration device 20. The controller is electrically connected to the timing device to control its operation. Specifically, the controller is used to control the start or stop of the timing device and the operating parameters during start-up. In some embodiments, the housing 103 may also be provided with a control panel 1031. The controller is electrically connected to the control panel 1031. When the control panel 1031 receives an operation signal for any functional device, it generates a corresponding electrical signal and sends it to the controller. The controller controls the refrigeration device based on the electrical signal. For example, upon receiving a start command, the controller controls the refrigeration device 100 to start operating. The controller may be a microcontroller unit (MCU), a microprocessor unit (MPU), a central processing unit (CPU), etc., and this embodiment does not limit this.

[0033] The timing device is used to record the defrosting heating time and defrosting cycle during the defrosting process. The defrosting cycle refers to the time period between the end of the previous defrosting and the end of the next defrosting, or the time period between the start of the previous defrosting and the start of the next defrosting. In this embodiment, the timing device is also used to record the duration for which the first actual air pressure value exceeds the pressure difference threshold and the duration for which the second actual air pressure value exceeds the pressure difference rate. The first actual air pressure value is the actual air pressure value of the refrigeration device 100 when the fan 25 is on, and the second actual air pressure value is the actual air pressure value of the refrigeration device 100 when the fan 25 is off. Since the cooling efficiency is higher when the fan 25 is on, the first actual air pressure value is higher than the second actual air pressure value, whether in deep cooling or normal cooling. The pressure difference threshold is a preset pressure threshold in the refrigeration system to ensure the safety and efficiency of the system. This embodiment does not limit the specific pressure difference threshold and can be set according to actual needs.

[0034] It should be noted that the differential pressure threshold is different when the fan 25 is on and off. As an example, the differential pressure threshold when the fan 25 is on can be 30 MPa, and the differential pressure threshold when the fan 25 is off can be 20 MPa. The number of timing devices can be one or more; this embodiment does not impose a specific limitation. The timing device is installed inside the housing 103, specifically on the cryogenic compartment 10 / ordinary compartment 102. As an example, there are multiple timing devices, one of which records the defrosting cycle of completing one defrosting operation, and another records the defrosting heating time.

[0035] In some embodiments, the refrigeration device 100 may further include a mobile device (not shown) connected to the controller for receiving or transmitting data. For example, a user operates the mobile device to enable the refrigeration device 100 to perform corresponding operations. For instance, the user inputs refrigeration operating parameters and defrosting reference parameters through the mobile device. For example, the refrigeration operating parameters may include the rotation speed of the fan 25, the operating power of the first evaporator 23 or the second evaporator 24, etc., and the defrosting reference parameters may include the initial defrosting cycle and the initial defrosting heating duration. The mobile device can encapsulate the corresponding operating data into control data and transmit it to the processing structure. The processing structure then controls the operation of the refrigeration device according to the control data, thereby enabling the mobile device to control the refrigeration device 100.

[0036] In some embodiments, the refrigeration device 100 may further include a pressure sensor (not shown in the figure), which is disposed inside the housing 103, specifically in the cryogenic compartment 101 or the ordinary compartment 102. The pressure sensor is used to acquire the actual pressure value of the refrigeration device 100 during operation, specifically acquiring the first and second actual pressure values ​​mentioned above. The first and second actual pressure values ​​are used in the calculation of defrosting parameters. The pressure sensor is also used to acquire the pressure values ​​of the air outlet 107 and the air return 106. When the pressure difference P1 between the air outlet 107 and the air return 106 is greater than a preset pressure difference P0, the defrosting device 10 is controlled to begin defrosting the first evaporator 23 or the second evaporator 24 to ensure the refrigeration efficiency of the refrigeration device 100. It should be noted that the preset air pressure difference P0 between the air outlet and the return air outlet can be a fixed parameter preset in the processor or memory before the refrigeration equipment leaves the factory. This embodiment does not limit the specific value of the preset air pressure difference P0 between the air outlet and the return air outlet.

[0037] In the embodiments of this application, using Figure 1 The control method provided in this application embodiment will be described using a refrigeration device 100 as an example. It is understood that this application is not limited thereto, except... Figure 1 The refrigeration equipment shown can also be refrigeration equipment with other structural forms, and this application does not limit it.

[0038] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings.

[0039] Please refer to Figure 3 This diagram illustrates a flow chart of a control method for a refrigeration device according to an embodiment of this application. This control method is applied to the refrigeration device provided in any of the above embodiments. The method includes the following steps S310 to S340.

[0040] S310: Obtain the cooling status of the refrigeration equipment.

[0041] In this embodiment, the cooling state includes a first working state and a second working state, and the cooling efficiency of the first working state is higher than that of the second working state.

[0042] In some embodiments, the cooling state is triggered by the user, and the cooling device begins cooling after receiving a user command. For example, when using the cooling device, the user can select a start control via a control panel or a mobile device connected to the cooling device to select a first operating state or a second operating state to instruct the cooling device to begin the current cooling process. After receiving an operation signal for the start control, the controller, in response to the operation signal, controls the cooling device to begin cooling in the first or second operating state.

[0043] In some embodiments, the cooling state can be obtained by acquiring the actual air pressure value. Specifically, during the operation of the cooling equipment, the air pressure sensor acquires the actual air pressure value in real time. When the actual air pressure value is greater than a preset air pressure parameter value or falls within a preset air pressure parameter range, the cooling equipment is operating in a first working state; otherwise, it is operating in a second working state. The air pressure parameter value or the preset air pressure parameter range is the critical value for transitioning from the second working state to the first working state. This embodiment does not limit the specific air pressure parameter range and can be set according to actual usage requirements. As an example, the air pressure parameter value can be 0.9 MPa or the air pressure parameter value range can be 0.9 MPa to 1.8 MPa (inclusive). For example, when the detected actual air pressure value is 0.9 MPa, the cooling equipment is operating in the first working state; when the detected actual air pressure value is 0.7 MPa, the cooling equipment is operating in the second working state.

[0044] In some embodiments, when the refrigeration equipment includes a fan, the actual air pressure value is detected by a pressure sensor after the controller acquires the fan status, since the fan's on / off state affects the actual air pressure value. Specifically, when the fan is on, the refrigeration equipment operates in a first working state if the actual air pressure value is greater than or falls within a preset first air pressure parameter value; otherwise, it operates in a second working state. When the fan is off, the refrigeration equipment operates in the first working state if the actual air pressure value is greater than or falls within a preset second air pressure parameter value; otherwise, it operates in the second working state. Similarly, the first air pressure parameter value or the first air pressure parameter range is the critical value between the second working state and the first working state when the fan is on, and the second air pressure parameter value or the second air pressure parameter range is the critical value between the second working state and the first working state when the fan is off. This embodiment does not limit the specific value of the critical value and can set it according to actual usage requirements. As an example only, the first air pressure parameter value is 0.9 MPa, or the range of the first air pressure parameter value can be 0.9 MPa to 1.8 MPa (inclusive). When the detected actual air pressure value is 0.9 MPa, it indicates that the refrigeration equipment is operating in a first working state when the fan is on. When the detected actual air pressure value is 0.8 MPa, it indicates that the refrigeration equipment is operating in a second working state when the fan is on. The second air pressure parameter value is 0.5 MPa, or the range of the second air pressure parameter value can be 0.5 MPa to 0.6 MPa (inclusive). When the detected actual air pressure value is 0.5 MPa, it indicates that the refrigeration equipment is operating in a first working state when the fan is off. When the detected actual air pressure value is 0.3 MPa, it indicates that the refrigeration equipment is operating in a second working state when the fan is off.

[0045] It should be noted that the air pressure parameter values, air pressure parameter value ranges, first air pressure parameter values, first air pressure parameter ranges, second air pressure parameter values, and second air pressure parameter value ranges mentioned in the above embodiments can be fixed parameters built into the processor / memory before the refrigeration equipment leaves the factory. The specific parameter values ​​can be set according to actual production needs, and this embodiment does not impose specific restrictions on them.

[0046] In other embodiments, the cooling status of the refrigeration equipment can also be obtained by detecting the fan speed. For example, when the fan is running, if the detected fan speed is greater than or equal to a critical fan speed value, it indicates that the refrigeration equipment is operating in a first working state; otherwise, it is operating in a second working state. Similarly, the critical fan speed value is a fixed parameter built into the processor / memory before the refrigeration equipment leaves the factory. This embodiment does not limit the specific value of the critical fan speed value.

[0047] In other embodiments, the refrigeration state of the refrigeration device can also be obtained by detecting the operating states of the first evaporator and the second evaporator. Specifically, when the refrigeration device is refrigerating, one of the first evaporator and the second evaporator can be selectively turned on. The operating states of the first evaporator and the second evaporator include an on state and a off state. When the first evaporator is in the on state and the second evaporator is in the off state, it indicates that the refrigeration device is operating in a first operating state; when the first evaporator is in the off state and the second evaporator is in the on state, it indicates that the refrigeration device is operating in a second operating state.

[0048] Step S320: Determine the corresponding defrosting reference parameters based on the cooling status.

[0049] The first and second operating states correspond to different defrosting reference parameters, which can improve defrosting efficiency and optimize energy consumption for different operating conditions. Defrosting reference parameters are the reference parameters for refrigeration equipment to perform defrosting operations. For example, parameters such as defrosting cycle, defrosting heating time, and defrosting heating interval can be set with reference to the defrosting reference parameters, or the equipment can be operated directly using the defrosting reference parameters.

[0050] In this embodiment, the defrosting reference parameters may include the differential pressure rate reference value V0 of the refrigeration device and the initial defrosting operating parameters. The controller can control the operation of the defrosting device based on the differential pressure rate reference value V0 and the initial defrosting operating parameters. The differential pressure rate refers to the rate of change of the gas pressure difference generated during the exchange of gases inside and outside the casing of the refrigeration equipment due to the "breathing effect" during refrigeration operation. The change in differential pressure has a significant impact on the heat and mass transfer efficiency, preservation effect, and energy consumption of the refrigeration equipment.

[0051] During the operation of refrigeration equipment, the differential pressure rate is affected by the operation of the fan and the defrosting effect of the defrosting device. The differential pressure rate can be optimized by adjusting the fan's operation and improving the defrosting effect, thereby improving the refrigeration efficiency. The differential pressure rate reference value V0 is a fixed operating parameter of the refrigeration equipment, which can be a fixed parameter preset in the controller to participate in adjusting the operation of the defrosting device. Specifically, after the refrigeration equipment operates at specified refrigeration operating parameters (e.g., initial fan speed, initial evaporator power), the controller controls the operation of the defrosting device according to the differential pressure rate reference value V0. Specifically, the controller can determine the defrosting operating parameters of the defrosting device based on the differential pressure rate reference value V0, thereby improving defrosting efficiency and thus improving the refrigeration effect. As an example, the defrosting operating parameters may include the defrosting cycle and defrosting heating time of the defrosting device. Of course, this embodiment is not limited to this; the defrosting operating parameters may also include other parameters, such as the defrosting heating interval or defrosting heating power.

[0052] As an example, the differential pressure rate reference value V0 can be a constant. The differential pressure rate reference value V0 of the refrigeration equipment in the first and second working states can be the same. Then the controller controls the defrosting device to operate according to the differential pressure rate reference value V0. Specifically, it can adjust the defrosting working parameters of the defrosting device according to the differential pressure rate reference value V0.

[0053] As another example, the differential pressure rate reference value V0 can also be different under different cooling states (first operating state and second operating state), but it is always a constant. For example, the first operating state corresponds to the first differential pressure rate reference value, and the second operating state corresponds to the second differential pressure rate reference value. The value of the first differential pressure rate reference value can be greater than the value of the second differential pressure rate reference value. Thus, the controller obtains the corresponding differential pressure rate reference value V0 (first differential pressure rate reference value or second differential pressure rate reference value) according to different operating states (first operating state or second operating state), and adjusts the defrosting operating parameters accordingly to further improve the targeting of the defrosting operation.

[0054] As another example, under the same cooling state, the differential pressure rate reference value V0 varies depending on the different operating conditions of the fan, but all are constant values. For example, in the first operating state, the third differential pressure rate reference value corresponds to the fan being on, and the fourth differential pressure rate reference value corresponds to the fan being off. In the second operating state, the fifth differential pressure rate reference value corresponds to the fan being on, and the sixth differential pressure rate reference value corresponds to the fan being off. After obtaining the corresponding cooling state, the controller obtains the fan's operating state, and then adjusts the defrosting device's operation based on the corresponding differential pressure rate reference value. This allows for more targeted adjustments to the defrosting device's operation based on the actual operating conditions of the refrigeration equipment, thereby improving both the defrosting and cooling effects. The differential pressure rate reference value V0 mentioned in any of the above embodiments can be a parameter setpoint or parameter table fixed in the processor or memory of the refrigeration equipment. This embodiment does not limit the specific differential pressure rate reference value V0 and can set it according to actual needs.

[0055] In this embodiment, the initial defrosting operating parameters are fixed parameters, which are used as a reference for the operating parameters of the defrosting device. For example, in a certain defrosting operation cycle, the controller controls the defrosting device to defrost using the initial defrosting operating parameters, or the controller sets the target operating parameters of the defrosting device based on the initial defrosting parameters.

[0056] As an example, initial defrosting parameters may include an initial defrosting cycle, which refers to the time required to complete one defrosting cycle. For example, this could be the time from the end of one defrosting cycle to the end of the next, or the time from the start of one defrosting cycle to the start of the next. As a specific example, the controller adjusts the defrosting parameters (e.g., the defrosting cycle) for the next defrosting cycle based on the initial defrosting cycle. This is essentially a correction process where the defrosting device adjusts its defrosting parameters based on the actual defrosting effect, which can improve the defrosting effect and thus improve the cooling effect.

[0057] As another example, the initial defrost operating parameters may include the initial defrost heating duration, which refers to the duration during which the defrosting device heats the first or second evaporator in a defrost cycle. The controller adjusts the defrost operating parameters (e.g., defrost heating duration) for the next defrost cycle based on the initial defrost heating duration. In other words, adjusting the defrost heating duration for the next cycle based on the current defrost effect can improve the defrost effect and thus improve the cooling effect.

[0058] As another example, the initial defrost operating parameters can include both the initial defrost heating duration and the initial defrost cycle. That is, the controller adjusts the defrost heating duration and defrost cycle of the defrost device in the next defrost cycle based on the initial defrost heating duration and the initial defrost cycle to achieve more precise defrost control.

[0059] In other embodiments, the initial defrost operating parameters may also include the initial defrost heating duration and the initial defrost heating duration interval, where the heating duration interval refers to the time between the completion of one heating cycle and the start of the next heating cycle. The controller adjusts the defrost operating parameters (e.g., defrost heating duration and defrost heating duration interval) for the next defrost cycle based on the initial defrost heating duration and the initial defrost heating duration interval. This is essentially a correction process where the defrost device adjusts its defrost operating parameters according to the actual defrost effect, which can improve the defrost effect and thus improve the cooling effect.

[0060] This embodiment does not limit the specific values ​​of the initial defrosting parameters and can set them according to actual usage needs. It is understood that the defrosting parameters can be fixed constants input by the user through the control panel or a mobile device connected to the refrigeration equipment, or fixed constants built into the processor / memory of the refrigeration equipment. This embodiment does not impose specific limitations on this.

[0061] Step S330: Determine the target operating parameters of the defrosting device based on the defrosting reference parameters.

[0062] The target operating parameters are the operating parameters of the defrosting device in the next defrosting cycle, which may include at least one of the target defrosting cycle, target defrosting heating duration, and target defrosting heating time interval. The target defrosting cycle is also the cycle length of the next defrosting cycle; the target defrosting heating duration is the heating duration of the defrosting device in the next defrosting cycle; and the target defrosting heating time interval is the time interval between the completion of defrosting heating and the next heating in the next cycle.

[0063] As an example, the controller can directly determine the target operating parameters of the defrosting device based on the initial defrosting operating parameters. That is, the type of the target operating parameters is the same as the type of the initial defrosting operating parameters. For example, if the initial defrosting operating parameters include the initial defrosting cycle, the target operating parameters also include the defrosting cycle. This simplifies the complexity of the control logic, facilitates a rapid response from the controller or processor, and allows for quick adjustment of the defrosting device's operating state, thereby improving defrosting efficiency. It is understood that when the initial defrosting operating parameters include the initial defrosting heating duration, the target operating parameters also include the defrosting heating duration; similarly, when the initial defrosting operating parameters include the initial defrosting heating duration interval, the target operating parameters also include the defrosting heating duration interval. This reduces errors caused by parameter conversion.

[0064] As another example, the differential pressure rate reference value V0 can be used as a proportional coefficient to perform calculations with the initial frost operating parameters. For example, the controller can determine the target operating parameters through the product operation, and the product result can be equal to the target operating parameters.

[0065] As another example, the target operating parameters can be determined by performing calculations based on the actual cooling operating parameters, the differential pressure rate reference value V0, and the initial defrost operating parameters. For instance, the controller can calculate the target operating parameters based on the relationship between the actual cooling differential pressure rate and the differential pressure rate reference value V0, combined with the initial defrost operating parameters.

[0066] Specifically, when the initial operating parameters include the initial defrost cycle, the target operating parameters may include the target defrost cycle. During the operation of the refrigeration equipment, within a certain defrost cycle, the actual differential pressure rate of the current refrigeration equipment is detected, and the target defrost cycle is calculated based on the actual differential pressure rate, the differential pressure rate reference value V0, and the initial defrost cycle. That is, in the Nth defrost cycle, the actual differential pressure rate of the refrigeration equipment is obtained, and the target defrost cycle for the (N+1)th defrost cycle is calculated based on the actual differential pressure rate, the differential pressure rate reference value V0, and the initial defrost cycle, where N is an integer greater than or equal to 1.

[0067] In some embodiments, when the initial operating parameters include the initial defrost heating time, the target operating parameters may include the target defrost heating time. During the operation of the refrigeration equipment, within a certain defrost cycle, the actual differential pressure rate of the current refrigeration equipment is detected, and the target defrost heating time is calculated based on the actual differential pressure rate, the differential pressure rate reference value V0, and the initial defrost heating time. That is, in the Nth defrost cycle, the actual differential pressure rate of the refrigeration equipment is obtained, and the target defrost heating time for the (N+1)th defrost cycle is calculated based on the actual differential pressure rate, the differential pressure rate reference value V0, and the initial defrost heating time, where N is an integer greater than or equal to 1.

[0068] In other embodiments, the initial operating parameters may simultaneously include the initial defrost cycle and the initial defrost heating duration, and the target operating parameters may include the target defrost cycle and the target defrost heating duration. During the operation of the refrigeration equipment, within a certain defrost cycle, the actual differential pressure rate of the current refrigeration equipment is detected, and the target defrost cycle and target defrost heating duration are calculated based on the actual differential pressure rate, the differential pressure rate reference value V0, the initial defrost cycle, and the initial defrost heating duration. That is, in the Nth defrost operation cycle, the actual differential pressure rate of the refrigeration equipment is obtained, and the target defrost cycle and target defrost heating duration of the N+1th defrost operation cycle are calculated based on the actual differential pressure rate, the differential pressure rate reference value V0, the initial defrost cycle, and the initial defrost heating duration, where N is an integer greater than or equal to 1.

[0069] In other embodiments, the initial operating parameters may include both the initial defrost heating duration and the initial defrost heating time interval, and the target operating parameters may include the target defrost heating duration and the target defrost heating time interval. During the operation of the refrigeration equipment, within a certain defrost cycle, the actual differential pressure rate of the current refrigeration equipment is detected, and the target defrost heating duration and the target defrost heating time interval are calculated based on the actual differential pressure rate, the differential pressure rate reference value V0, the initial defrost heating duration, and the initial defrost heating time interval. That is, in the Nth defrost operation cycle, the actual differential pressure rate of the refrigeration equipment is obtained, and the target defrost heating duration and the target defrost heating time interval for the N+1th defrost operation cycle are calculated based on the actual differential pressure rate, the differential pressure rate reference value V0, the initial defrost heating duration, and the initial defrost heating time interval, where N is an integer greater than or equal to 1.

[0070] Step S340: Control the defrosting device to operate according to the target operating parameters.

[0071] After determining the target operating parameters, the controller sends an instruction to the defrosting device to adjust the target operating parameters and controls the defrosting device to defrost with the target operating parameters in the next defrosting cycle.

[0072] Specifically, when the target operating parameters include the target defrosting cycle mentioned above, the controller or processor sends an instruction to the defrosting device to adjust the target defrosting cycle. The defrosting device adjusts the target defrosting cycle according to the instruction and performs defrosting in the next defrosting cycle according to the adjusted target defrosting cycle. That is, the defrosting device performs defrosting in the next defrosting cycle (in the N+1th cycle) with the target defrosting cycle.

[0073] When the target operating parameters include the target defrosting heating time mentioned above, the controller or processor sends an instruction to the defrosting device to adjust the target defrosting heating time. The defrosting device adjusts the target defrosting heating time according to the instruction and defrosts with the target defrosting heating time in the next defrosting cycle.

[0074] When the target operating parameters include the target defrosting cycle and target defrosting heating time mentioned above, the controller or processor sends an instruction to the defrosting device to adjust the target defrosting cycle and target defrosting heating time. The defrosting device adjusts the target defrosting cycle and target defrosting heating time according to the instruction and defrosts in the next defrosting cycle with the target defrosting cycle and target defrosting heating time.

[0075] In some embodiments, when the target operating parameters include a target defrosting heating time and a target heating time interval, the controller or processor sends an instruction to the defrosting device to adjust the target defrosting heating time and the target heating time interval. The defrosting device adjusts the target defrosting heating time and the target heating time interval according to the instruction and uses the target defrosting heating time and the target heating time interval in the next cycle. It should be noted that the target operating parameters can be extended or shortened compared to the initial operating parameters. For example, the target defrosting heating time can be extended, shortened, or equal to the initial defrosting heating time. This embodiment does not impose specific limitations on this.

[0076] In summary, the control method for the refrigeration equipment provided in this embodiment allows the refrigeration equipment to selectively operate in either a first or second working state to adapt to different refrigeration needs and environments, enabling more targeted refrigeration operations. This ensures refrigeration effectiveness while reducing energy consumption, thus improving the flexibility and reliability of the refrigeration equipment. Furthermore, different refrigeration states require different defrosting reference parameters. By acquiring the refrigeration state, the refrigeration equipment automatically determines the corresponding defrosting reference parameters. On one hand, this enables automated control of the defrosting process, reducing the need for manual monitoring and intervention, and improving the convenience of defrosting. On the other hand, the corresponding defrosting reference parameters are more targeted, improving defrosting efficiency, avoiding unnecessary energy consumption, and reducing over-defrosting or poor defrosting. Further, the refrigeration equipment determines the target operating parameters of the defrosting device (i.e., the target defrosting cycle and / or the target defrosting heating time) based on the defrosting reference parameters. Therefore, in actual defrosting operations, the target operating parameters can be automatically adjusted according to different defrosting environments and actual defrosting effects. Essentially, this is an automatic correction and optimization process of the target parameters, resulting in better defrosting performance and lower defrosting costs.

[0077] Please see Figure 4 , Figure 4 A flowchart of another control method for a refrigeration device provided in an embodiment of this application is shown. This method is applied to the refrigeration device provided in any of the above embodiments. The method includes the following steps S410 to S440.

[0078] Step S410: Obtain the cooling status of the refrigeration equipment.

[0079] In some embodiments, the specific execution of step S410 can refer to step S310. To save space, this embodiment will not repeat the details.

[0080] Step S420: Determine the corresponding defrosting reference parameters based on the cooling state.

[0081] In some embodiments, the specific execution of step S420 can refer to step S320. To save space, this embodiment will not repeat the details.

[0082] Step S430: Determine the target operating parameters of the defrosting device based on the defrosting reference parameters.

[0083] In some embodiments, the specific execution of step S430 can refer to step S330. To save space, this embodiment will not repeat the details.

[0084] In this embodiment, during the operation of the refrigeration equipment, the defrosting device operates according to a certain cycle. When determining the target operating parameters of the defrosting device, the target operating parameters for the next cycle can be determined based on the specific refrigeration status of the current cycle, so as to adjust the operation of the defrosting device more accurately and improve the defrosting effect. Based on this, in some embodiments, step S430 may also include the following steps S431 to S432:

[0085] Step S431: Obtain the actual operating parameters of the refrigeration unit in the Nth defrosting cycle, where N is an integer greater than or equal to 1.

[0086] The actual operating parameters are the parameter values ​​of the refrigeration equipment during actual operation. As an example, in this embodiment, the actual operating parameters may include the actual differential pressure rate, which is detected during the operation of the refrigeration equipment within a certain defrosting cycle (i.e., the Nth defrosting cycle).

[0087] In this embodiment, the actual pressure difference rate can be calculated using the pressure difference threshold, the pressure value recorded by the pressure sensor, and the duration exceeding the pressure difference threshold recorded by the timing device. Specifically, during the operation of the refrigeration equipment, in the Nth defrosting cycle, the pressure sensor detects the actual pressure value of the refrigeration equipment in real time. When the actual pressure value detected by the pressure sensor rises to time T, which is greater than the pressure difference threshold, the controller controls the timing device to start timing. When the actual pressure value detected by the pressure sensor drops to less than the pressure difference threshold, the controller controls the timing device to stop timing. At this time, the duration recorded by the timing device is the duration during which the actual pressure value exceeds the pressure difference threshold. The magnitude of the actual pressure difference rate is the ratio of the actual pressure value to the duration during which the pressure value exceeds the pressure difference threshold. It should be noted that the pressure difference threshold is a preset pressure threshold in the refrigeration system to ensure the safety and efficiency of the system. In the first or second operating state, the pressure difference threshold is different depending on the fan's operating state and is a constant. For example, in the first or second operating state, the first pressure difference threshold corresponds to the fan being on, and the second pressure difference threshold corresponds to the fan being off. As an example, the first differential pressure threshold can be 30 MPa, and the second differential pressure threshold can be 20 MPa. It should be noted that the differential pressure thresholds of 30 MPa and 20 MPa mentioned above are only examples and do not mean that the differential pressure thresholds of the refrigeration equipment can only be these values ​​in actual use. They can be set according to actual usage requirements.

[0088] When the refrigeration equipment includes a fan, since the fan corresponds to a first differential pressure threshold and a second differential pressure threshold in the on and off states of the refrigeration equipment, the process of obtaining the actual differential pressure rate in the Nth defrosting cycle may include: obtaining the fan status in the Nth defrosting cycle, determining the corresponding differential pressure threshold based on the fan status; and determining the actual differential pressure rate of the refrigeration device in the Nth defrosting cycle based on the actual air pressure value of the refrigeration device and the differential pressure threshold in the Nth defrosting cycle.

[0089] In this embodiment, the fan status includes an off state and an on state. The fan status can be obtained by retrieving the fan operation flag bit from the refrigeration equipment's memory or processor. For example, when the controller controls the refrigeration equipment to operate, the flag bit corresponding to the fan being on is 1, and the flag bit corresponding to the fan being off is 0. The controller obtains the fan status by retrieving the flag bit from the memory or processor.

[0090] In some embodiments, the status of the fan can be obtained through a sensor. For example, the sensor can be a temperature sensor, which is installed on the fan. When the temperature detected by the temperature sensor rises to a certain temperature value or within a certain temperature range, it indicates that the fan is in the on state; otherwise, the fan is in the off state. This embodiment does not limit the specific temperature value or temperature range. It is understood that the temperature value or temperature range can be a fixed value built into the memory or processor of the refrigeration equipment at the factory. As another example, the sensor can be a wind pressure sensor / airflow sensor, which is installed on the housing and located in the air outlet path of the fan. When the airflow generated by the fan is in the on state passes over the probe surface of the pressure sensor, it generates an aerodynamic force, which is converted into a pressure signal. When the controller or processor obtains the pressure signal, it indicates that the fan is in the on state; otherwise, it is in the off state.

[0091] In this embodiment, the fan being in the "on" state corresponds to a first differential pressure threshold, and the fan being in the "off" state corresponds to a second differential pressure threshold. The first and second differential pressure thresholds are not the same; specifically, the first differential pressure threshold can be greater than the second differential pressure threshold. The first and second differential pressure thresholds can be parameter tables stored in the processor / memory of the refrigeration equipment. After determining the fan state, the controller retrieves the parameter table stored in the processor / memory. The parameter table includes the corresponding differential pressure threshold for the fan state. For example, 01 corresponds to the first differential pressure threshold when the fan is in the "on" state, and 02 corresponds to the second differential pressure threshold when the fan is in the "off" state. By parsing the parameter table, the differential pressure threshold of the fan in the corresponding state can be confirmed. For example, the controller parses the position flag 1 in the memory or processor to obtain that the fan state is "on," looks up the corresponding parameter 01 when the fan state is "on," and obtains the first differential pressure threshold. The controller parses the position flag 0 in the memory or processor to obtain that the fan state is "off," looks up the corresponding parameter 02 when the fan state is "off," and obtains the second differential pressure threshold.

[0092] As an example, in the case of a refrigeration device excluding a fan, the differential pressure threshold S is a preset parameter value. During the operation of the refrigeration device and within a certain defrosting cycle, the wind pressure sensor / airflow sensor detects the actual air pressure value p at time T within the current cycle, while the controller controls the timing device to record the duration t for which the actual air pressure value p exceeds the differential pressure threshold S. The actual differential pressure rate V is the ratio of the differential pressure threshold S to the duration for which the actual air pressure value p exceeds the differential pressure threshold S, that is, V = S / t.

[0093] In other embodiments, when the refrigeration equipment includes a fan, since the fan can be in a closed or open state during the operation of the refrigeration equipment, in order to improve the accuracy of subsequent defrosting, the actual differential pressure rate should be understood as the average of the differential pressure rate corresponding to the fan being in the open state and the differential pressure rate corresponding to the fan being in the closed state.

[0094] Specifically, the steps for determining the actual differential pressure rate of the refrigeration unit in the Nth defrosting cycle based on the differential pressure threshold may include: obtaining the first actual air pressure value and the duration Tk for which the first actual air pressure value exceeds the first differential pressure threshold when the fan is in the on state in the Nth defrosting cycle; calculating the actual differential pressure rate V11k when the fan is in the on state based on the first actual air pressure value and Tk; obtaining the second actual air pressure value and the duration Tg for which the second actual air pressure value exceeds the second differential pressure threshold when the fan is in the off state in the Nth defrosting cycle; calculating the actual differential pressure rate V11g when the fan is in the off state based on the second actual air pressure value and Tg; and calculating the actual differential pressure rate of the refrigeration unit in the Nth defrosting cycle based on Tk, V11k, Tg, and V11g.

[0095] Specifically, during the operation of the refrigeration equipment, in the Nth defrosting cycle, when the fan is on, the wind pressure sensor / airflow sensor detects the first actual air pressure value p1 at time T2 of the current cycle. When the first actual air pressure value p1 detected by the wind pressure sensor / airflow sensor is greater than the first differential pressure threshold S1, the controller controls the timing device to start timing. When the first actual air pressure value p1 detected by the wind pressure sensor / airflow sensor decreases to less than the first differential pressure threshold S1, the controller controls the timing device to stop timing and records the duration for which the first actual air pressure value p1 exceeds the first differential pressure threshold S1 as Tk.

[0096] The actual differential pressure rate V11k when the fan is in the on state is the ratio of the first differential pressure threshold S1 to Tk, i.e., V11k = S1 / Tk. For example, if the first differential pressure threshold when the fan is in the on state is 30 MPa and Tk is 19 h, then the actual differential pressure rate V11k when the fan is in the on state is 1.58 MPa / h.

[0097] In the Nth defrosting cycle, when the fan is off, the wind pressure sensor / airflow sensor detects the second actual air pressure value p2 at time T3 in the current cycle. When the second actual air pressure value p2 detected by the wind pressure sensor / airflow sensor is greater than the second differential pressure threshold S2, the controller controls the timing device to start timing. When the second actual air pressure value p2 detected by the wind pressure sensor / airflow sensor drops to less than the second differential pressure threshold S2, the controller controls the timing device to stop timing and records the duration for which the second actual air pressure value p2 exceeds the second differential pressure threshold S2 as Tg.

[0098] The actual differential pressure rate V11g when the fan is off is the ratio of the second differential pressure threshold S2 to Tg, i.e., V11g = S2 / Tg. For example, if the second differential pressure threshold when the fan is off is 20 MPa and Tk is 30 h, then the actual differential pressure rate V11g when the fan is off is 0.67 MPa / h.

[0099] When the refrigeration equipment includes a fan, in the Nth defrosting cycle, the actual differential pressure rate V11 of the refrigeration equipment is the average of V11k and V11g, and the specific calculation formula is: actual differential pressure rate V11 = (V11k * Tk + V11g * Tg) / (Tk + Tg).

[0100] It is understandable that, in the Nth defrosting cycle, when the fan remains on, the actual differential pressure rate V11 is the same as the actual differential pressure rate V11k when the fan is on. When the fan remains off, the actual differential pressure rate V11 is the same as the actual differential pressure rate V11g when the fan is off. After the fan has operated in both on and off states for a period of time, the actual differential pressure rate is the average of the actual differential pressure rates V11k and V11g.

[0101] Step S432: Determine the target operating parameters of the defrosting device in the N+1th defrosting cycle based on the actual operating parameters and defrosting reference parameters.

[0102] In this embodiment, the actual operating parameters include the actual differential pressure rate mentioned above, the defrosting reference parameters include the differential pressure rate reference value V0 of the refrigeration device mentioned above, and the initial defrosting operating parameters. The initial defrosting operating parameters include the initial defrosting cycle, the initial defrosting heating time, etc., mentioned above. For details, please refer to the relevant parameters mentioned above. After the controller obtains the actual differential pressure rate, the differential pressure rate reference value V0, and the initial defrosting operating parameters, it multiplies the three to obtain the target operating parameters for the N+1th defrosting cycle.

[0103] As a specific example, the controller determines the target operating parameters (e.g., target defrosting cycle, target defrosting heating time) of the defrosting device in the N+1 defrosting operation cycle based on the ratio of the actual differential pressure rate to the reference value V0 of the differential pressure rate in the Nth defrosting operation cycle, combined with the initial defrosting operating parameters (e.g., initial defrosting cycle, initial defrosting heating time). The target operating parameters and the ratio are positively correlated.

[0104] As an example, if the initial defrosting parameters include the initial defrosting cycle and the target defrosting parameters include the target defrosting cycle, the target defrosting cycle can be directly proportional to the ratio, or it can be directly proportional to the initial defrosting cycle, or the target defrosting cycle can be directly proportional to the product of the ratio and the initial defrosting cycle.

[0105] Specifically, the controller or processor calculates the target defrosting cycle for the next defrosting cycle (the (N+1)th) defrosting cycle based on the ratio of the actual differential pressure rate to the reference value V0 calculated in the current defrosting cycle (the Nth defrosting cycle) and the initial defrosting cycle, using a first calculation formula. The first calculation formula can be:

[0106]

[0107] Where T1 is the target defrosting cycle of the (N+1)th defrosting operation cycle, T0 is the initial defrosting cycle, V11 is the actual differential pressure rate, and V0 is the reference value of the differential pressure rate. For detailed explanations of each parameter value, please refer to the relevant parameters above. To save space, this embodiment will not provide detailed explanations.

[0108] In other embodiments, the target defrost cycle can be multiplied by a constant C, based on the fact that the ratio and the initial defrost cycle are directly proportional. The constant C can be understood as a correction coefficient, which is a constant summarized by technicians before the refrigeration equipment leaves the factory based on multiple defrost tests to optimize the defrost effect. For example, it can be 0.9, 1.1, 2 or other constants. This embodiment does not limit the specific parameter value of the constant C.

[0109] As another example, when the initialization working parameters include the initialization heating time and the target working parameters include the target defrosting heating time, the target defrosting heating time can be directly proportional to the ratio, and the target defrosting heating time can also be directly proportional to the initialization heating time.

[0110] Specifically, the controller or processor calculates the target defrosting heating time for the next defrosting cycle (the N+1th defrosting cycle) using a second formula, based on the ratio of the actual differential pressure rate to the reference value V0 calculated in the current defrosting cycle (the Nth defrosting cycle) and the initial defrosting heating cycle duration. The second formula can be:

[0111]

[0112] Where L1 is the target defrosting heating time for the (N+1)th defrosting cycle, T0 is the initial defrosting heating time, V11 is the actual differential pressure rate, and V0 is the reference value for the differential pressure rate. For detailed explanations of each parameter value, please refer to the relevant parameters above. To save space, this embodiment will not provide detailed explanations.

[0113] Similarly, in other embodiments, the target defrosting heating time, which is proportional to both the ratio and the initial defrosting heating time, can be multiplied by a constant C. The constant C in this embodiment can be referred to the constant C described above; for brevity, it will not be repeated here.

[0114] In other embodiments, the initial defrost operating parameters may simultaneously include the initial defrost heating duration and the initial defrost cycle, and the target operating parameters may include the target defrost heating duration and the target defrost cycle. The controller or processor calculates the target defrost heating duration for the next defrost operating cycle (the (N+1)th) cycle using the second calculation formula based on the ratio of the actual differential pressure rate to the differential pressure rate reference value V0 calculated in the current defrost cycle (the Nth defrost cycle), the initial defrost heating cycle, and the initial defrost heating duration. It then calculates the target defrost cycle for the next defrost operating cycle (the N+1th) cycle using the first calculation formula to achieve more precise regulation of the defrost process, thereby improving the defrost effect and ultimately enhancing the cooling effect.

[0115] Step S440: Control the defrosting device to operate according to the target operating parameters.

[0116] In this embodiment, the specific execution of step S440 can refer to step S340 in the above embodiment. To save space, this specification will not repeat it.

[0117] In summary, the control method for the refrigeration equipment provided in this embodiment obtains the differential pressure thresholds of the fan under different states and calculates the actual differential pressure rates under two different fan states based on the differential pressure thresholds, thereby more accurately obtaining the target operating parameters of the defrosting device. This improves the defrosting efficiency and defrosting effect of the defrosting device, further enhancing the refrigeration efficiency of the refrigeration equipment. In this embodiment, the controller uses a first calculation formula to calculate the target defrosting cycle of the next cycle and a second calculation formula to calculate the target defrosting heating time of the next cycle. That is, the operating values ​​in the next cycle of the defrosting operation are all correction values ​​of the previous cycle, which further improves the defrosting efficiency and defrosting effect of the defrosting device.

[0118] See Figure 5 , Figure 5 A flowchart of another control method for a refrigeration device provided in an embodiment of this application is shown. This method is applied to the refrigeration device provided in any of the above embodiments. The method includes the following steps S510 to S540.

[0119] Step S510: Obtain the cooling status of the refrigeration equipment.

[0120] In some embodiments, the specific execution of step S510 can refer to step S310. To save space, this embodiment will not repeat the details.

[0121] In other embodiments, the refrigeration device may include at least two evaporators to improve refrigeration efficiency. These at least two evaporators are configured to operate in different refrigeration states to simplify the control procedure and increase operating speed. Specifically, the at least two evaporators may include a first evaporator and a second evaporator. The first evaporator is configured to operate in a first working state, and the second evaporator is configured to operate in a second working state. It is understood that in other embodiments, the refrigeration device may also include only one evaporator with different operating power. When the refrigeration device operates in different refrigeration states, the controller controls the evaporator to operate at different power levels. Based on this, step S510 in this embodiment may include the steps of: obtaining the operating states of the first evaporator and the second evaporator, and determining the refrigeration state of the refrigeration device based on the operating states of the first evaporator or the second evaporator.

[0122] In this embodiment, the refrigeration equipment can selectively activate either the first evaporator or the second evaporator for refrigeration. When the first evaporator is on (while the second evaporator is off), the refrigeration equipment operates in a first working state; when the second evaporator is on (while the first evaporator is off), the refrigeration equipment operates in a second working state. The first evaporator has a higher refrigeration efficiency than the second evaporator, and its energy consumption is higher than that of the second evaporator.

[0123] In this embodiment, the cooling temperature of the first evaporator is lower than that of the second evaporator. The on / off status of the first and second evaporators can be determined by detecting the internal temperature of the refrigeration equipment using a temperature sensor. For example, the cooling temperature of the refrigeration equipment when using the first evaporator can be less than or equal to -10°C, meaning the cooling temperature of the refrigeration equipment when using the second evaporator is greater than -10°C. During the operation of the refrigeration equipment, when the temperature detected by the temperature sensor is less than or equal to -10°C, it indicates that the first evaporator is in the on / off state; when the temperature detected by the temperature sensor is greater than -10°C, it indicates that the second evaporator is in the on / off state.

[0124] In other embodiments, the fan status can be obtained by retrieving the flag bits of the first and second evaporators from the memory or processor of the refrigeration equipment. Specifically, when the controller controls the refrigeration equipment to operate, the flag bit corresponding to the first evaporator being in the on state is 2, and the flag bit corresponding to the second evaporator being in the on state is 3. The controller obtains the operating status of the first and second evaporators by retrieving the flag bits from the memory or processor.

[0125] After acquiring the operating states of the first and second evaporators, the controller can determine the cooling state of the refrigeration equipment based on these states. For example, a corresponding program may be stored in the memory or controller. After acquiring the operating states of the first or second evaporator, the controller can identify the corresponding program from the memory or controller to determine the cooling state of the refrigeration equipment. For instance, the control program could control the refrigeration equipment to operate in a first operating state when the first evaporator is on, and conversely, control it to operate in a second operating state when the first evaporator is off.

[0126] Step S520: Determine the corresponding defrosting reference parameters according to the cooling status. The first working state and the second working state correspond to different defrosting reference parameters.

[0127] In this embodiment, the specific execution of step S520 can be referred to step S320. To save space, this embodiment will not repeat the details.

[0128] Step S530: Determine the target operating parameters of the defrosting device based on the defrosting reference parameters.

[0129] In some embodiments, the specific execution of step S530 can refer to step S330. To save space, this embodiment will not repeat the details.

[0130] In other embodiments, when the refrigeration equipment is equipped with the aforementioned first evaporator and second evaporator, the defrosting device may also be equipped with a first defrosting mechanism and a second defrosting mechanism corresponding to the first and second evaporators, to avoid multiple adjustments by the defrosting device in the first and second evaporators, thereby reducing the complexity of the control program. In this embodiment, the first defrosting mechanism corresponds to the first evaporator, and the second defrosting mechanism corresponds to the second evaporator. When the first evaporator of the refrigeration equipment is in the open state, the target operating parameters determined by the controller are the target operating parameters of the first defrosting mechanism, and after determining the target operating parameters, the controller outputs a command to control the operation of the first defrosting mechanism. When the second evaporator of the refrigeration equipment is in the open state, the target operating parameters determined by the controller are the target operating parameters of the second defrosting mechanism, and after determining the target operating parameters, the controller outputs a command to control the operation of the second defrosting mechanism.

[0131] It is understood that in some embodiments, the first evaporator and the second evaporator may also be defrosted using the same defrosting mechanism. Specifically, a defrosting mechanism is disposed between the first evaporator and the second evaporator for defrosting both evaporators. Further, in some embodiments, the defrosting mechanism is configured with different defrosting powers, such as a first power and a second power, where the first power may be greater than the second power. When the first evaporator is in the on state, the controller controls the defrosting mechanism to operate at the first power; when the second evaporator is in the on state, the controller controls the defrosting mechanism to operate at the second power.

[0132] Step S540: Control the defrosting device to operate according to the target operating parameters.

[0133] In some embodiments, the specific execution of step S540 can refer to step S340. To save space, this embodiment will not repeat the details.

[0134] In other embodiments, the target evaporator and target defrosting mechanism for the next defrosting cycle (N+1 defrosting cycle) can be determined based on the evaporator in the current defrosting cycle (Nth defrosting cycle) and the corresponding usage status of the evaporator, to simplify the control procedure. Specifically, step S540 may include: determining a target evaporator in the first evaporator and the second evaporator based on their operating states; determining a corresponding target defrosting mechanism in the first defrosting mechanism and the second defrosting mechanism based on the target evaporator; and controlling the target defrosting mechanism to operate according to the target operating parameters.

[0135] Specifically, in some embodiments, the controller can determine the target evaporator for the next defrost cycle based on the on / off status of the first and second evaporators in the current defrost cycle, thereby reducing the complexity of the refrigeration equipment's control program. For example, during the operation of the refrigeration equipment, in the Nth defrost cycle, when the controller detects that the first evaporator is on, the controller outputs an instruction to the defrosting device to use the first evaporator as the target evaporator in the N+1th defrost cycle. When the controller detects that the second evaporator is on, the controller outputs an instruction to the defrosting device to use the second evaporator as the target evaporator in the N+1th defrost cycle.

[0136] In this embodiment, a first defrosting mechanism is disposed within the casing and adjacent to the first evaporator to facilitate defrosting of the first evaporator, and a second defrosting mechanism is disposed within the casing and adjacent to the second evaporator to facilitate defrosting of the second evaporator. In this embodiment, the controller can determine the target defrosting mechanism based on the acquired target evaporator and the corresponding control program. The control program is configured to control the first defrosting mechanism to operate when the first evaporator is turned on, and to control the second defrosting mechanism to operate when the second evaporator is turned on. For example, when the target evaporator acquired by the controller is the second evaporator, the controller determines the second defrosting mechanism as the target defrosting mechanism to perform defrosting for the N+1th defrosting cycle. When the target evaporator acquired by the controller is the first evaporator, the controller determines the first defrosting mechanism as the target defrosting mechanism to perform defrosting for the N+1th defrosting cycle.

[0137] After determining the target defrosting mechanism and the target evaporator, the controller controls the target evaporator to cool, and outputs target operating parameters (target defrosting cycle, target defrosting heating time) to the target defrosting mechanism to control the defrosting mechanism.

[0138] It should be noted that defrosting reference parameters (such as the differential pressure rate reference value V0 and the initial defrost operating parameters) can also be used as the target operating parameters of the defrosting device. For example, in the first defrosting cycle, determining the target operating parameters of the defrosting device based on the defrosting reference parameters includes: determining the initial defrost operating parameters as the target operating parameters of the defrosting device in the first defrosting cycle. That is, during the initial startup of the refrigeration equipment, since the refrigeration equipment is in a state without frost, the actual differential pressure rate at this time is the differential pressure rate reference value V0. In the initial defrosting cycle, the defrosting device uses the initial defrost operating parameters (initial defrost cycle and / or initial defrost heating time) as the actual operating parameters of the initial defrost cycle and uses the initial defrost operating parameters as the target operating parameters of the first defrost cycle. This does not involve the process of calculating the target defrost cycle and target defrost time using the first or second calculation formula. In the second defrost cycle, the actual differential pressure rate changes, and the controller calculates the target operating parameters for the next defrost cycle according to the first or second calculation formula. Meanwhile, the controller is configured to calculate the target defrosting cycle or target defrosting heating time using either the first or second calculation formula in any subsequent cycle.

[0139] In some embodiments, the control method further includes: detecting the air pressure difference between the return air vent and the air outlet during any defrosting cycle; and controlling the opening and closing of the defrosting device based on the air pressure difference to avoid over-defrosting or under-defrosting. Specifically, during the operation of the refrigeration equipment, a large air pressure difference between the air outlet and the return air vent due to frost formation can affect the cooling effect of the refrigeration equipment. During the operation of the refrigeration equipment, a pressure sensor detects the air pressure value P2 at the air outlet and the air pressure value P3 at the return air vent in real time. The controller obtains P2 and P3 and performs calculations based on P2 and P3 to obtain the air pressure difference P1 between the air outlet and the return air vent, for example, P1 = P2 - P3. When P1 is greater than a preset air pressure difference P0 between the air outlet and the return air vent, the controller controls the defrosting device to defrost the first evaporator or the second evaporator to ensure stable defrosting. During any defrosting cycle of the defrosting device, the difference between P1 and P0 gradually decreases. When P1 is less than the preset air pressure difference P0 between the air outlet and the return air outlet, the controller controls the defrosting device to pause defrosting to end the defrosting cycle early. For example, in the N+1th defrosting cycle, if the target defrosting heating time is 5 minutes, but P1 is already less than P0 after 4.5 minutes of defrosting, the controller controls the defrosting device to stop heating to reduce defrosting energy consumption.

[0140] In summary, in this embodiment, obtaining the operating status of the refrigeration equipment by acquiring the operating status of the first and second evaporators allows for more accurate acquisition of the equipment's operating status. Furthermore, determining the target evaporator and then the target defrosting mechanism based on the operating status of the first and second evaporators enables more efficient defrosting operations and allows for more targeted setting of defrosting parameters, thereby improving defrosting effectiveness and reducing unnecessary energy consumption, ensuring high efficiency and energy saving in subsequent defrosting operations.

[0141] Please see Figure 6This diagram illustrates a block diagram of a control device 600 for a refrigeration device according to an embodiment of this application. The control device 600 is applied to a refrigeration device 100 equipped with a defrosting device 10. The refrigeration device 100 includes a deep-cooling compartment 101 and a normal compartment 102. The deep-cooling compartment 101 is used for deep cooling, i.e., the refrigeration device 100 is in a first operating state. The normal compartment 102 is used for normal cooling, i.e., the refrigeration device 100 is in a second operating state. The refrigeration device 100 includes a refrigeration unit 20 for cooling and a defrosting device 10 for defrosting. The refrigeration unit 20 may include a compressor 21, a condenser 22, a first evaporator 23, and a second evaporator 24. The compressor 21, condenser 22, first evaporator 23, and second evaporator 24 constitute a refrigerant circulation system for cooling. The refrigeration unit 20 also includes a fan 25 for blowing air to improve cooling efficiency. The refrigeration unit 20 may also include a dryer filter 26, a gas-liquid separator 27, an electromagnetic flow valve 28, and a capillary flow tube 29 to ensure stable operation of the refrigeration equipment and improve refrigeration efficiency.

[0142] The refrigeration equipment 100 also includes a timing device, a pressure sensor / wind pressure sensor, and a temperature sensor. The timing device records the defrosting heating time and defrosting cycle during the defrosting process. It also records the duration for which the actual pressure value (e.g., a first actual pressure value and a second actual pressure value) exceeds a pressure difference threshold. The pressure sensor / wind pressure sensor detects the actual pressure value (e.g., a first actual pressure value and a second actual pressure value) during the operation of the refrigeration equipment 100. It also detects the pressure around the fan 25 to obtain the fan status. The temperature sensor obtains the temperature of the fan 25 to obtain the fan status, which includes an on / off state. The temperature sensor also obtains the temperature inside the casing 103 to obtain the operating status of the first evaporator 23 and the second evaporator 24, which include an on / off state.

[0143] The control device 600 for the refrigeration equipment includes: a refrigeration status acquisition module 610, a defrosting reference parameter acquisition module 620, a target operating parameter acquisition module 630, and a control module 640.

[0144] The cooling status acquisition module 610 is used to acquire the cooling status of the refrigeration device 100. The cooling status includes a first operating status and a second operating status. In some embodiments, the cooling status acquisition module 610 may include an evaporator status acquisition unit, which is used to acquire the operating status of the first evaporator 23 and the second evaporator 24, including an on state and a off state. The evaporator status acquisition unit is also used to determine the cooling status of the refrigeration device 100 based on the operating status of the first evaporator 23 and the second evaporator 24.

[0145] The defrost reference parameter acquisition module 620 is used to determine the corresponding defrost reference parameters based on the cooling status. The first operating state and the second operating state correspond to different defrost reference parameters. The defrost reference parameters may include either a differential pressure rate reference value or an initial defrost cycle and / or an initial defrost heating duration.

[0146] The target operating parameter acquisition module 630 is used to determine the target operating parameters of the defrosting device based on the defrosting reference parameters. Specifically, the target operating parameters may include the target defrosting cycle and the target defrosting heating duration. The target operating parameter acquisition module 630 may include an actual operating parameter acquisition unit, which is used to acquire the actual operating parameters of the refrigeration device, for example, to acquire the actual operating parameters of the refrigeration device in the Nth defrosting cycle, where N is an integer greater than or equal to 1.

[0147] The target operating parameter acquisition module 630 is also used to determine the target operating parameters of the defrosting device in the N+1 defrosting cycle based on the actual operating parameters of the refrigeration device and the defrosting reference parameters, and to determine the target operating parameters of the defrosting device in the N+1 defrosting cycle based on the ratio of the actual differential pressure rate and the differential pressure rate reference value in the Nth defrosting cycle, combined with the initial defrosting operating parameters.

[0148] In some embodiments, the target working parameter acquisition module 630 further includes a processing unit, which is used to calculate the target defrosting cycle T1 of the N+1 defrosting operation cycle using the first calculation formula in the above embodiments and to calculate the target defrosting heating time of the N+1 defrosting operation cycle using the second calculation formula in the above embodiments.

[0149] When the current defrosting cycle is the first cycle, the target operating parameter acquisition module 630 is also used to determine the defrosting reference parameters as the target operating parameters of the defrosting device in the first defrosting cycle.

[0150] In some embodiments, the target operating parameter acquisition module 630 further includes a fan status acquisition unit, which is used to acquire the fan status in the Nth defrosting operation cycle. The fan status includes a closed state and an open state. The fan status acquisition unit is also used to determine the corresponding differential pressure threshold based on the fan status. The open state corresponds to a first differential pressure threshold, and the closed state corresponds to a second differential pressure threshold. The first and second differential pressure thresholds are not the same. The fan status acquisition unit is also used to determine the actual differential pressure rate of the refrigeration unit in the Nth defrosting operation cycle based on the differential pressure thresholds. In some embodiments, the fan status acquisition unit is also used to acquire the first actual air pressure value when the fan is in the open state, the duration Tk for which the first actual air pressure value exceeds the first differential pressure threshold, the second actual air pressure value when the fan is in the closed state, and the duration Tg for which the second actual air pressure value exceeds the second differential pressure threshold in the Nth defrosting operation cycle, and to calculate the actual differential pressure rate of the refrigeration unit in the Nth defrosting operation cycle based on Tk, V11k, Tg, and V11g.

[0151] The control module 640 is used to control the defrosting device 10 to work according to the target working parameters. Specifically, the control module 640 is used to determine the target evaporator in the first evaporator and the second evaporator according to the working status of the first evaporator and the second evaporator; determine the corresponding target defrosting mechanism in the first defrosting mechanism and the second defrosting mechanism according to the target evaporator; and control the target defrosting mechanism to work according to the target working parameters.

[0152] In the several embodiments provided in this application, the coupling between modules can be electrical, mechanical, or other forms of coupling.

[0153] Furthermore, the functional modules in the various embodiments of this application can be integrated into one module, or each module can exist physically separately, or two or more modules can be integrated into one module. The integrated module can be implemented in hardware or as a software functional module.

[0154] like Figure 7 As shown in the example, this application provides a refrigeration device 700, which can be a vehicle refrigerator. It may possess one or more features of the refrigeration device provided in any of the above embodiments and is used to execute the control method provided in any of the above embodiments. The refrigeration device 700 in this embodiment includes a processor 701 and a memory 702. The memory 702 stores computer program instructions and related parameters.

[0155] Processor 701 may include one or more processing cores. Processor 701 connects to various parts of the entire battery management system using various interfaces and lines, and performs various functions and processes data of the battery management system by running or executing instructions, programs, code sets, or instruction sets stored in memory 702, and by calling data stored in memory 702. Optionally, processor 701 may be implemented using at least one hardware form of Digital Signal Processing (DSP), Field-Programmable Gate Array (FPGA), or Programmable Logic Array (PLA). Processor 701 may integrate one or more of the following: Central Processing Unit (CPU), Graphics Processing Unit (GPU), and modem. The CPU primarily handles the operating system, user interface, and applications; the GPU is responsible for rendering and drawing the displayed content; and the modem handles wireless communication. It is understood that the modem may also not be integrated into processor 701 and may be implemented separately through a communication chip.

[0156] The memory 702 may include random access memory (RAM) or read-only memory (ROM). The memory 702 can be used to store instructions, programs, code, code sets, or instruction sets. The memory 702 may include a program storage area and a data storage area. The program storage area may store instructions for implementing an operating system, instructions for implementing at least one function (such as touch functionality, sound playback functionality, etc.), instructions for implementing various method examples described below, etc. The data storage area may also store data created during the use of the cooking appliance.

[0157] Please see Figure 8 The present application also provides a computer-readable storage medium 800, which stores computer program instructions 801 that can be invoked by a processor to perform the methods described in the above embodiments.

[0158] Computer-readable storage medium 800 may be an electronic memory such as flash memory, EEPROM (Electrically Erasable Programmable Read-Only Memory), EPROM, hard disk, or ROM. Optionally, computer-readable storage medium 700 includes a non-volatile computer-readable storage medium. Computer-readable storage medium 800 has storage space for computer program instructions 801 that perform any of the method steps S described above. These computer program instructions 801 can be read from or written to one or more computer program products. The computer program instructions 801 may be compressed in an appropriate form.

[0159] The above are merely preferred examples of this application and are not intended to limit this application in any way. Although this application has disclosed the preferred examples above, they are not intended to limit this application. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent examples without departing from the scope of the technical solution of this application. Any simple modifications, equivalent changes and alterations made to the above examples based on the technical essence of this application without departing from the scope of the technical solution of this application shall still fall within the scope of the technical solution of this application.

Claims

1. A control method for a refrigeration device, characterized in that, This is applied to refrigeration equipment equipped with a defrosting device and a refrigeration device. The refrigeration equipment can be selectively in a first working state or a second working state during operation, and the refrigeration efficiency of the first working state is higher than that of the second working state. The control method includes: The refrigeration status of the refrigeration equipment is obtained, and the refrigeration status includes the first working status and the second working status. Based on the cooling state, the corresponding defrosting reference parameters are determined, and the first working state and the second working state correspond to different defrosting reference parameters. Based on the defrosting reference parameters, determine the target operating parameters of the defrosting device; The defrosting device is controlled to operate according to the target operating parameters.

2. The method as described in claim 1, characterized in that, The defrosting device is configured to perform defrosting operations periodically. In the Nth defrosting cycle, determining the target operating parameters of the defrosting device based on the defrosting reference parameters includes: Obtain the actual operating parameters of the refrigeration device in the Nth defrosting cycle, where N is an integer greater than or equal to 1; Based on the actual working parameters and the defrosting reference parameters, the target working parameters of the defrosting device in the N+1th defrosting operation cycle are determined.

3. The method as described in claim 2, characterized in that, The defrosting reference parameters include the differential pressure rate reference value of the refrigeration device and the initial defrosting working parameters. The initial defrosting working parameters include the initial defrosting cycle and / or the initial defrosting heating duration. The actual working parameters of the refrigeration device include the actual differential pressure rate. The step of determining the target operating parameters of the defrosting device in the N+1th defrosting cycle based on the actual operating parameters and the defrosting reference parameters includes: Based on the ratio of the actual differential pressure rate to the reference value of the differential pressure rate in the Nth defrosting cycle, and in conjunction with the initial defrosting operating parameters, the target operating parameters of the defrosting device in the (N+1)th defrosting cycle are determined; the target operating parameters and the ratio are positively correlated.

4. The method as described in claim 3, characterized in that, When the initialization frost working parameters include the initialization frost cycle and the target working parameters include the target defrosting cycle, the target defrosting cycle of the N+1th defrosting operation cycle is directly proportional to the ratio, and the target defrosting cycle of the N+1th defrosting operation cycle is directly proportional to the initialization frost cycle. or / and, When the initialization defrost working parameters include the initialization defrost heating time and the target working parameters include the target defrost heating time, the target defrost heating time of the N+1th defrost operation cycle is directly proportional to the ratio, and the target defrost heating time of the N+1th defrost operation cycle is directly proportional to the initialization defrost heating time.

5. The control method as described in claim 3, characterized in that, The refrigeration equipment also includes a fan, and the process of obtaining the actual differential pressure rate in the Nth defrosting cycle includes: Obtain the fan status during the Nth defrosting cycle, where the fan status includes a closed state and an open state. The corresponding differential pressure threshold is determined based on the fan status, wherein the open state corresponds to the first differential pressure threshold and the closed state corresponds to the second differential pressure threshold, and the first differential pressure threshold and the second differential pressure threshold are different; The actual pressure difference rate of the refrigeration device in the Nth defrosting cycle is determined based on the actual air pressure value of the refrigeration device in the Nth defrosting cycle and the pressure difference threshold.

6. The method as described in claim 5, characterized in that, The step of determining the actual pressure difference rate of the refrigeration unit in the Nth defrosting cycle based on the actual gas pressure value of the refrigeration unit in the Nth defrosting cycle and the pressure difference threshold includes: Obtain the first actual air pressure value and the duration Tk during which the first actual air pressure value exceeds the first pressure difference threshold when the fan is in the on state during the Nth defrosting operation cycle; Based on the first actual air pressure value and the Tk, calculate the actual pressure difference rate V11k when the fan is in the on state; Obtain the second actual air pressure value and the duration Tg during which the second actual air pressure value exceeds the second pressure difference threshold during the Nth defrosting operation cycle when the fan is in the off state; Based on the second actual air pressure value and the Tg, calculate the actual pressure difference rate V11g when the fan is in the off state; The actual differential pressure rate of the refrigeration unit in the Nth defrosting cycle is calculated based on Tk, V11k, Tg, and V11g.

7. The method as described in claim 2, characterized in that, The defrosting reference parameters include the initial defrosting cycle and / or the initial defrosting heating duration; In the first defrosting cycle, determining the target operating parameters of the defrosting device based on the defrosting reference parameters includes: The defrosting reference parameters are determined as the target operating parameters of the defrosting device in the first defrosting operation cycle.

8. The method according to any one of claims 1 to 7, characterized in that, The refrigeration device includes a first evaporator and a second evaporator. When the refrigeration device is working, the first evaporator or the second evaporator can be selectively turned on. When the first evaporator is turned on, it indicates that the refrigeration device is operating in the first working state. When the second evaporator is turned on, it indicates that the refrigeration device is operating in the second working state. The step of obtaining the cooling status of the refrigeration equipment includes: The operating status of the first evaporator and the second evaporator is obtained, including an on state and an off state; The refrigeration state of the refrigeration equipment is determined based on the operating state of the first evaporator or the second evaporator.

9. The control method as described in claim 8, characterized in that, The defrosting device includes a first defrosting mechanism corresponding to the first evaporator and a second defrosting mechanism corresponding to the second evaporator; Controlling the defrosting device to operate according to the target operating parameters includes: Based on the operating status of the first evaporator and the second evaporator, determine the target evaporator among the first evaporator and the second evaporator; Based on the target evaporator, a corresponding target defrosting mechanism is determined among the first defrosting mechanism and the second defrosting mechanism; The target defrosting mechanism is controlled to operate according to the target operating parameters.

10. A control device for a refrigeration equipment, characterized in that, The control device is applied to a refrigeration device equipped with a defrosting device. The refrigeration device can selectively operate in a first operating state or a second operating state, wherein the refrigeration efficiency in the first operating state is higher than that in the second operating state. The control device includes: A refrigeration status acquisition module is used to obtain the refrigeration status of a refrigeration device, wherein the refrigeration status includes a first working state and a second working state. The defrosting reference parameter acquisition module is used to determine the corresponding defrosting reference parameters. The first working state and the second working state correspond to different defrosting reference parameters. The target operating parameter acquisition module is used to determine the target operating parameters of the defrosting device based on the defrosting reference parameters. The control module is used to control the defrosting device to operate according to the target operating parameters.

11. A refrigeration device, characterized in that, The refrigeration equipment is equipped with a defrosting device, and the refrigeration equipment includes: One or more processors; Memory; One or more applications, wherein the one or more said applications are stored in the memory and configured to be executed by one or more said processors, the one or more said applications being configured to perform the method as described in any one of claims 1 to 9.

12. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores program code that is invoked by a processor to execute the method as described in any one of claims 1 to 9.

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