Refrigeration equipment control method and device, refrigerator and computer readable storage medium

Abstract

The invention provides a refrigeration equipment control method and device, a refrigerator and a computer readable storage medium. The method comprises the steps that a valve switching instruction for controlling an electric switching valve is obtained; according to the valve switching instruction, determining a to-be-switched target conduction position of the electric switching valve; the electric switching valve is controlled to be switched to the target conduction position, and the current resistance value of the slide rheostat when the electric switching valve is located at the actual conduction position is obtained; according to the current resistance value and a target resistance value corresponding to the target conduction position, determining a position switching error between the actual conduction position and the target conduction position; and according to the position switching error, whether the electric switching valve is controlled for calibration or not is determined. According to the method, the calibration efficiency of the electric switching valve can be improved.

Description

Technical Field

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

[0002] In existing technology, multi-system refrigerators typically have a refrigerator evaporator and a freezer evaporator for refrigeration and freezing respectively, and an electric switching valve switches between the refrigeration of the refrigerator evaporator and the freezer evaporator. However, during use, the electric switching valve may become stuck in one of four situations: it loses synchronization and gets stuck in the refrigerator evaporator branch, it gets stuck in the freezer evaporator branch, it remains stuck in the closed state, or it gets stuck in the fully open state. This can lead to a series of problems that cause the refrigeration of the refrigerator compartment and the freezer compartment to fail.

[0003] The current approach to this problem is to set a fixed interval (e.g., 24 hours) to reset the electric switching valve. However, the current fixed interval is often too long or too short. If it is too long, the problem of inaccurate electric switching valve position cannot be resolved in time. Summary of the Invention

[0004] This application provides a control method for refrigeration equipment that can promptly resolve the problem of stuck electric switching valves.

[0005] In a first aspect, this application provides a refrigeration equipment control method applied to a target refrigeration equipment, the target refrigeration equipment including an electrically operated switching valve for supplying refrigerated air to different food storage compartments and a sliding rheostat, the electrically operated switching valve and the sliding rheostat being connected in series in a circuit, and the valve of the electrically operated switching valve being physically connected to the sliding element of the sliding rheostat via a rigid component, the method comprising: Obtain the valve switching command that controls the electric switching valve; Based on the valve switching command, determine the target conduction position to be switched by the electric switching valve; Control the electric switching valve to switch to the target conducting position, and obtain the current resistance value of the sliding rheostat when the electric switching valve is in the actual conducting position; Based on the current resistance value and the target resistance value corresponding to the target conduction position, determine the position switching error between the actual conduction position and the target conduction position; Based on the position switching error, determine whether to control the electric switching valve for calibration.

[0006] In some embodiments of this application, controlling the electric switching valve to switch to the target conducting position and obtaining the current resistance value of the sliding rheostat when the electric switching valve is in the actual conducting position includes: Control the electric switching valve to switch to the target conduction position; If the valve switching command is executed, the actual conduction position of the electric switching valve is determined. Obtain the initial current resistance value of the sliding rheostat when the electric switching valve is in the actual conducting position; The initial current resistance value is calibrated to obtain the current resistance value.

[0007] In some embodiments of this application, the step of calibrating the initial current resistance value to obtain the current resistance value includes: Obtain the current space temperature of the space where the sliding rheostat is located; Based on the current space temperature, determine the corresponding resistance temperature offset; Based on the resistance temperature offset, the initial current resistance value is calibrated to obtain the current resistance value.

[0008] In some embodiments of this application, determining whether to control the electric switching valve for calibration based on the position switching error includes: The error level is determined based on the location switching error. If the error level is the target error level, then it is determined that the electric switching valve needs to be calibrated; If the error level is not the target error level, then it is determined that the electric switching valve will not be calibrated.

[0009] In some embodiments of this application, determining the error level based on the position switching error includes: Obtain different error level coefficients; Based on the error level coefficients and the target resistance value, different error level ranges are determined, and each error level range corresponds to its respective error level. Determine the target error level range in which the current resistance value falls; The error level is determined based on the target error level range.

[0010] In some embodiments of this application, determining whether to control the electric switching valve for calibration based on the position switching error includes: If it is determined that the electric switching valve needs to be calibrated, then the electric switching valve is reset to the reference conduction position. If the electric switching valve is determined to be in the reference conduction position, then the electric switching valve is controlled to switch to the target conduction position, thereby completing the calibration of the electric switching valve.

[0011] In some embodiments of this application, after determining whether to control the electric switching valve for calibration based on the position switching error, the method further includes: If the electric switching valve is not in the target set position during the first target time interval, then the electric switching valve is controlled to reset to the reference conduction position according to the preset second time interval.

[0012] Secondly, this application also provides a refrigeration equipment control device applied to a target refrigeration equipment. The target refrigeration equipment includes an electrically operated switching valve and a sliding rheostat for supplying refrigeration air to different food storage compartments. The electrically operated switching valve and the sliding rheostat are connected in series in a circuit, and the valve of the electrically operated switching valve is also physically connected to the sliding element of the sliding rheostat via a rigid component. The device includes: The acquisition module is used to acquire valve switching commands that control the electric switching valve; The processing module is used to determine the target conduction position to be switched by the electric switching valve according to the valve switching command; The processing module is also used to control the electric switching valve to switch to the target conduction position, and to obtain the current resistance value of the sliding rheostat when the electric switching valve is in the actual conduction position; The processing module is further configured to determine the position switching error between the actual conduction position and the target conduction position based on the current resistance value and the target resistance value corresponding to the target conduction position; The processing module is also used to determine whether to control the electric switching valve for calibration based on the position switching error.

[0013] Thirdly, this application also provides a refrigerator, the refrigerator including a processor, a memory and a computer program stored in the memory and executable on the processor, the processor executing the computer program to implement the steps in any of the refrigeration equipment control methods described above.

[0014] Fourthly, this application also provides a computer-readable storage medium storing a computer program that is executed by a processor to implement the steps in any of the refrigeration equipment control methods described above.

[0015] The refrigeration equipment control method provided in this application connects a sliding rheostat and an electric switching valve in series, and connects the valve of the electric switching valve to the sliding component of the sliding rheostat via a rigid component. Changes in the valve's position cause changes in the resistance of the sliding rheostat. When a constant voltage is input, the resistance of the sliding rheostat differs at different valve positions, resulting in different voltage drops across the rheostat. Therefore, by monitoring the resistance of the sliding rheostat, the specific position of the valve can be determined, enabling accurate and rapid determination of whether the electric switching valve is in the correct position. This facilitates valve calibration and improves the speed of electric switching valve calibration. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of the present invention, 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 the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of a refrigeration equipment control system provided in the embodiments of this application; Figure 2 This is a schematic flowchart of one embodiment of the refrigeration equipment control method in this application; Figure 3 This is a schematic diagram of a functional module of the refrigeration equipment control device in an embodiment of this application; Figure 4 This is a schematic diagram of the refrigerator structure in an embodiment of this application. Detailed Implementation

[0018] 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 some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0019] In the description of this application, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0020] In this application, the term "exemplary" is used to mean "used as an example, illustration, or description." Any embodiment described as "exemplary" in this application is not necessarily to be construed as being more preferred or advantageous than other embodiments. Furthermore, it is understood that in the specific embodiments of this application, user information, user data, and other related data are involved. When the above embodiments of this application are applied to specific products or technologies, user permission or consent is required, and the collection, use, and processing of related data must comply with the relevant laws, regulations, and standards of the relevant countries and regions.

[0021] To enable any person skilled in the art to implement and use this application, the following description is provided. In this description, details are set forth for purposes of explanation. It should be understood that those skilled in the art will recognize that this application can be implemented without using these specific details. In other instances, well-known structures and processes will not be described in detail to avoid obscuring the description of this application with unnecessary detail. Therefore, this application is not intended to be limited to the embodiments shown, but is consistent with the broadest scope of the principles and features disclosed in this application.

[0022] This application provides a refrigeration equipment control method, apparatus, device, and storage medium, which are described in detail below.

[0023] Please see Figure 1 , Figure 1 This is a schematic diagram of a refrigeration equipment control system provided in an embodiment of this application. The refrigeration equipment control system may include a refrigerator 100. For example... Figure 1 The refrigerator 100 in the application can be used to obtain the relevant control logic stored in the refrigerator 100 in order to execute the refrigeration equipment control method in this application.

[0024] In this embodiment of the application, the refrigerator 100 may include, but is not limited to, a double-door refrigerator, a single-door refrigerator, a freezer, etc.

[0025] It should be noted that, Figure 1 The schematic diagram of the refrigeration equipment control system shown is merely an example. The refrigeration equipment control system and scenario described in this application are intended to more clearly illustrate the technical solutions of this application and do not constitute a limitation on the technical solutions provided in this application. As those skilled in the art will know, with the evolution of refrigeration equipment control systems and the emergence of new business scenarios, the technical solutions provided in this application are also applicable to similar technical problems.

[0026] like Figure 2 As shown, Figure 2This is a schematic flowchart of an embodiment of the refrigeration equipment control method in this application. The method is applied to a target refrigeration equipment, which includes an electric switching valve and a sliding rheostat for supplying refrigeration air to different food storage compartments. The electric switching valve and the sliding rheostat are connected in series in the circuit, and the valve of the electric switching valve is also physically connected to the sliding part of the sliding rheostat through a rigid component. The method specifically includes the following steps 201 to 205: 201. Obtain the valve switching command for controlling the electric switching valve.

[0027] In this embodiment, the target refrigeration equipment includes different food storage compartments, which may include refrigerator compartments, freezer compartments, etc., and may also include some compartments with unique storage functions, such as vegetable compartments, etc. Specific embodiments of this application do not limit this. The electrically operated switching valve may include multiple conduction directions for guiding cooling airflow to each storage compartment. For example, after the compressor generates cold air, the fan operates, sending the cooling airflow to the electrically operated switching valve. Based on the valve position of the electrically operated switching valve, the airflow is guided to the storage compartment corresponding to the current position. The valve switching command of the electrically operated switching valve is automatically issued based on the control program inside the refrigeration equipment. For example, if the temperature of the refrigerator compartment rises and cooling is required, the valve of the electrically operated switching valve will switch to the valve position corresponding to the refrigerator compartment. At this time, the valve switching command of the electrically operated switching valve can be obtained. Of course, it can also switch to the valve position corresponding to the freezer compartment, or the position corresponding to other compartments, which will not be elaborated in this embodiment.

[0028] 202. Based on the valve switching command, determine the target conduction position to be switched by the electric switching valve.

[0029] Based on the above steps, since the valve control command of the electric switching valve is obtained, the target conduction position of the valve can be determined according to the command. Assuming there are refrigerator and freezer compartments, different control positions can be represented by two binary signals. For example, a 00 signal can represent the minimum angle position of the valve, a 01 signal can represent the refrigerator compartment position, a 10 signal can represent the refrigerator compartment position, and a 11 signal can represent the maximum angle position of the valve. If other positions exist, three binary signals can be used, which will not be elaborated upon in this embodiment. Therefore, through the valve switching command, the specific target conduction position to be switched to can be determined. For example, receiving a 01 signal determines that the valve needs to be switched to the position corresponding to the refrigerator compartment, and receiving a 10 signal determines that the valve needs to be switched to the position corresponding to the freezer compartment.

[0030] 203. Control the electric switching valve to switch to the target conducting position, and obtain the current resistance value of the sliding rheostat when the electric switching valve is in the actual conducting position.

[0031] Once the target conduction position corresponding to the valve control command is determined, the command is executed, controlling the valve to begin switching. Under normal circumstances, if the valve is functioning correctly, the actual conduction position obtained after switching the valve to the target conduction position should be the same as the target conduction position. However, due to issues such as icing or frosting, the valve may malfunction when switching to the target conduction position, causing a deviation between the actual and target conduction positions, thus leading to a decrease in the cooling effect of the corresponding compartment. Therefore, it is necessary to monitor the electric switching valve for any abnormalities.

[0032] In this embodiment, an additional sliding rheostat is connected in series with the electric switching valve in the circuit. According to circuit knowledge, a resistor connected in series in a circuit will draw voltage. It is known that the resistance of the electric switching valve is fixed. When the valve position changes, it causes a rigid component to move the sliding component of the rheostat, resulting in a change in the resistance of the rheostat. Therefore, different valve positions correspond to different resistances of the rheostat. Thus, different valve positions correspond to different resistance values ​​of the rheostat. Therefore, monitoring the resistance of the rheostat can determine the correct actual conduction position of the valve. Monitoring the resistance of the rheostat can refer to any circuit-related technology, such as adding an ammeter and voltmeter to the rheostat and calculating the voltage of the rheostat using the current and voltage readings. This embodiment does not limit the specific implementation of such methods.

[0033] 204. Based on the current resistance value and the target resistance value corresponding to the target conduction position, determine the position switching error between the actual conduction position and the target conduction position.

[0034] It should be noted that, in this embodiment, during program setting, the resistance value of the sliding rheostat at different conduction positions of the electric switching valve can be manually detected. For example, the target resistance value of the sliding rheostat is measured at the correct conduction position for the refrigerator compartment, and the target resistance value is measured at the correct conduction position for the freezer compartment. These target resistance values ​​for different conduction positions are then stored. Based on this, in practical applications, after obtaining the target conduction position according to the valve switching command, the target resistance value corresponding to that target conduction position can be determined based on the stored target resistance value. Then, by comparing the current resistance value corresponding to the actual conduction position, the resistance difference between the two values ​​can be obtained. In this embodiment, this resistance difference can be used as the position switching error between the actual conduction position and the target conduction position.

[0035] 205. Based on the position switching error, determine whether to control the electric switching valve for calibration.

[0036] The resistance difference is obtained by following the steps above. If the resistance difference is too large, it indicates a significant deviation in the switching of the electric switching valve's conduction position, requiring calibration. If the resistance difference is small, it indicates that the switching of the electric switching valve's position is not significantly deviated, and calibration is not required.

[0037] Since errors in electrically operated switching valves can be caused by factors such as icing or frosting, leading to jamming during switching, a separate heating device can be installed to heat the valve. When calibration is required, the valve can be heated. After heating, the target on / off position can be switched again. Based on this, the valve can be immediately checked each time it is switched, and if an anomaly is found, calibration can be performed immediately without waiting for a fixed calibration period, thus improving the calibration speed and efficiency.

[0038] The refrigeration equipment control method provided in this application connects a sliding rheostat and an electric switching valve in series, and connects the valve of the electric switching valve to the sliding component of the sliding rheostat via a rigid component. Changes in the valve's position cause changes in the resistance of the sliding rheostat. When a constant voltage is input, the resistance of the sliding rheostat differs at different valve positions, resulting in different voltage drops across the rheostat. Therefore, by monitoring the resistance of the sliding rheostat, the specific position of the valve can be determined, enabling accurate and rapid determination of whether the electric switching valve is in the correct position. This facilitates valve calibration and improves the speed of electric switching valve calibration.

[0039] To better implement the embodiments of this application, in one embodiment, controlling the electric switching valve to switch to the target conducting position and obtaining the current resistance value of the sliding rheostat when the electric switching valve is in the actual conducting position includes: Control the electric switching valve to switch to the target conducting position; if the valve switching command is executed, determine the actual conducting position of the electric switching valve; obtain the initial current resistance value of the sliding rheostat when the electric switching valve is in the actual conducting position; calibrate the initial current resistance value to obtain the current resistance value.

[0040] As can be seen from the scenario described in the embodiments of this application, the purpose of the electric switching valve is to guide the refrigerant airflow to different compartments. Therefore, the operating environment temperature of the electric switching valve is very low. Ambient temperature has a very strong influence on resistance. For example, when reading the resistance value of the same resistor in normal and low-temperature environments, the two readings will differ. Therefore, in low-temperature environments, the read resistance will naturally have a deviation. This means that even if the electric switching valve switches to the target conduction position smoothly without any abnormalities, there may still be a problem where the current resistance value does not correspond to the target resistance value at the target conduction position.

[0041] Based on this, to solve this derivative problem, this application provides a solution for calibrating the current resistance value. In this application embodiment, the method for obtaining the resistance value involved in the steps of "controlling the electric switching valve to switch to the target conduction position; if the valve switching command is executed, determining that the electric switching valve has obtained the actual conduction position; obtaining the initial current resistance value of the sliding rheostat when the electric switching valve is in the actual conduction position" is the same as the solution described in the above embodiment, and will not be repeated here. Furthermore, since the operating environment temperature of the electric switching valve is very low, as described above, the average resistance deviation of the electric switching valve under low-temperature operating conditions can be detected. In this application embodiment, based on actual detection, a resistance compensation value can be set. Assuming the resistive material of the sliding rheostat is a metallic conductor (such as copper or iron), the lower the temperature, the smaller the resistance. Therefore, a positive resistance compensation value can be set. Alternatively, assuming the resistive material of the sliding rheostat is a semiconductor (such as silicon or a thermistor): the lower the temperature, the larger the resistance, so a negative resistance compensation value can be set. The specific value can be set according to the actual situation. The set resistance compensation value is stored. When the initial current resistance value needs to be calibrated, the resistance value can be calibrated by combining the resistance compensation value, and the current resistance value corresponding to the actual conduction position of the valve can be obtained.

[0042] To better implement the embodiments of this application, in one embodiment, resistance calibration is performed on the initial current resistance value to obtain the current resistance value, including: Obtain the current temperature of the space where the sliding rheostat is located; determine the corresponding resistance temperature offset based on the current temperature; calibrate the initial current resistance value based on the resistance temperature offset to obtain the current resistance value.

[0043] The above embodiments provide a resistance calibration scheme based on a preset resistance compensation value. However, this scheme has limitations in terms of flexibility and accuracy. Therefore, to overcome these limitations, this application also provides a resistance calibration scheme. Specifically, refer to formula (1), which is shown below: ...(1) In formula (1), T is the current ambient temperature; T0 is the reference temperature, such as 25 degrees Celsius; a is the temperature coefficient corresponding to the actual resistive material of the sliding rheostat; and R0 is the resistance value at the reference temperature T0. At this time, according to formula (1)... By calculating the resistance temperature offset corresponding to the current space temperature, and then multiplying this resistance temperature offset by the reference resistance value R0, the current resistance value corresponding to the current actual conduction position can be determined.

[0044] To better implement the embodiments of this application, in one embodiment, determining whether to control the electric switching valve for calibration based on the position switching error includes: Based on the position switching error, determine the error level; if the error level is the target error level, then determine that the electric switching valve needs to be calibrated; if the error level is not the target error level, then determine that the electric switching valve does not need to be calibrated.

[0045] The above embodiments provide a scheme for determining whether an electrically operated switching valve needs calibration based on the resistance difference. Furthermore, embodiments of this application also provide a more precise scheme.

[0046] Specifically, multiple error threshold intervals can be set. After obtaining the resistance difference, it is determined which specific error threshold interval the resistance difference belongs to, and each error threshold interval corresponds to an error level. Assuming there are three error threshold intervals: a first error threshold interval, a second error threshold interval, and a third error threshold interval, if the first and second error threshold intervals are taken as target error threshold intervals, then the error levels corresponding to the first and second error threshold intervals are the target error levels. In this case, the error level corresponding to the third error threshold interval is a non-target error threshold interval. If the resistance error belongs to the first or second error threshold interval, then the electric switching valve is calibrated; if the resistance error belongs to the third error threshold interval (which is a non-target error threshold interval), then the electric switching valve is not calibrated. Alternatively, the first error threshold interval can be taken as the target error threshold interval, then the error level corresponding to the first error threshold interval is the target error level; and the second and third error threshold intervals can be taken as non-target error threshold intervals, then the error levels corresponding to the second and third error threshold intervals are non-target error levels. At this point, if the resistance error falls within the first error threshold range, then the electric switching valve is calibrated; if the resistance error falls within the second or third error threshold range, corresponding to a non-target error threshold range, then the electric switching valve is not calibrated. The specific setting of the target and non-target error threshold ranges is not limited in this embodiment.

[0047] To better implement the embodiments of this application, in one embodiment, the error level is determined based on the position switching error, including: Obtain different error level coefficients; determine different error level intervals based on each error level coefficient and the target resistance value, with each error level interval corresponding to its own error level; determine the target error level interval in which the current resistance value is located; determine the error level based on the target error level interval.

[0048] The above embodiments provide a solution for setting different error threshold intervals and determining error levels. The embodiments of the present application also provide a solution for determining error levels. Specifically, the error level coefficients can be set in advance, such as 0.95, 0.9, 1.05, 1.1, 0.85, 1.15, etc. At this time, assuming that the target resistance value corresponding to the target conduction position is R2, different error level intervals can be determined according to these error level coefficients. For example: [0.95 R2, 1.05 R2], [0.9 R2, 1.1 R2], [0.85 R2, 1.15 R2], at this time [0.95 R2, 1.05 R2] can be the first error interval, [0.9 R2, 1.1 R2] can be the second error interval, [0.85 R2, 1.15 R2] can be the third error interval, and so on. If the current resistance value belongs to the first error interval, it is the smallest error range, which can belong to the conventional error and can correspond to the situation where no calibration is required; if the current resistance value belongs to the second error interval or the third error interval, it can be determined as a larger error or a huge error, etc., which can correspond to the situation where calibration is required.

[0049] Specifically, assume that the position of the valve corresponding to the freezer is 2. At this time, position 2 is the target conduction position, and the reference target resistance value corresponding to position 2 is also R2. Assume that the current resistance value is R. If 0.95×R2 ≤ R ≤ 1.05×R2, it is determined that the electric switching valve reaches the target position, and it is judged to be at error level 1 and no calibration is required. If 0.9×R2 ≤ R < 0.95×R2 or 1.05×R2 < R ≤ 1.1×R2, it is determined that the electric switching valve reaches the target position, and it is judged to be at error level 2. If 0.9×R2 > R or 1.1×R2 < R, it is determined that the electric switching valve does not reach the target position, and it is judged to be at error level 3. At this time, when it is judged to be at error level 2 for the first time, in order to save energy, the electric valve is operated to the position where the reference resistance value of the target position is located during the next defrosting, and the compressor is normally opened for refrigeration this time. When it is judged to be at error level 3 for the first time, the valve needs to be calibrated. The calibration method in the embodiments of the present application can be the same as the above description, and will not be elaborated here.

[0050] To better implement the embodiments of the present application, in one embodiment of the present application, determining whether to control the electric switching valve for calibration according to the position switching error includes: If it is determined that the electric switching valve needs to be calibrated, then the electric switching valve is reset to the reference conduction position; if it is determined that the electric switching valve is in the reference conduction position, then the electric switching valve is switched to the target conduction position to complete the calibration of the electric switching valve.

[0051] The above embodiments provide a scheme for completing calibration by defrosting using a heating device. In this application embodiment, a calibration method is also provided that can save on the heating device.

[0052] Specifically, the valve itself has a maximum closing angle of 0 degrees and a maximum opening angle, which is determined by the valve's inherent properties. In this embodiment, the electric switching valve can be operated to the position of the target reference resistance value, such as the valve's 0-degree closure or maximum opening. By continuously outputting current, the valve is physically de-iced, or the inaccuracy of electric control at low temperatures is eliminated. For example, assuming the valve needs to be energized for 3 seconds to reach the maximum opening angle, it can be continuously energized or repeatedly energized. After the valve reaches the maximum opening angle, the valve's conduction position will not change, thus completing the valve reset operation. Then, the valve is controlled to reach the target conduction position, and then the compressor is turned on. This completes the valve calibration through the reset operation.

[0053] To better implement the embodiments of this application, in one embodiment, after determining whether to control the electric switching valve for calibration based on the position switching error, the method further includes: If the electric switching valve is not in the target set position during the first target time interval, the electric switching valve is controlled to reset to the reference conduction position according to the preset second time interval.

[0054] In addition, this application embodiment also provides an implementation method in order to prevent the target conduction position from not reaching the minimum closing angle position and the maximum opening angle position for a long time. Every 96 hours and after the compressor stops, the electric switching valve can be forcibly reset once to prevent the minimum closing angle position and the maximum opening angle position from freezing or frosting.

[0055] To better implement the refrigeration equipment control method in this application embodiment, this application embodiment also provides a refrigeration equipment control device. This device is applied to a target refrigeration equipment, which includes an electrically operated switching valve and a sliding rheostat for supplying refrigerated air to different food storage compartments. The electrically operated switching valve and the sliding rheostat are connected in series in the circuit, and the valve of the electrically operated switching valve is also physically connected to the sliding component of the sliding rheostat via a rigid component. Figure 3 As shown, the device 300 includes: The acquisition module 301 is used to acquire valve switching commands that control the electric switching valve; Processing module 302 is used to determine the target conduction position to be switched by the electric switching valve according to the valve switching command; The processing module 302 is also used to control the electric switching valve to switch to the target conducting position, and to obtain the current resistance value of the sliding rheostat when the electric switching valve is in the actual conducting position; The processing module 302 is also used to determine the position switching error between the actual conduction position and the target conduction position based on the current resistance value and the target resistance value corresponding to the target conduction position; The processing module 302 is also used to determine whether to control the electric switching valve for calibration based on the position switching error.

[0056] The refrigeration equipment control device provided in this application connects a sliding rheostat in series with an electric switching valve, and connects the valve of the electric switching valve to the sliding component of the sliding rheostat via a rigid component. Changes in the valve's position cause changes in the resistance of the sliding rheostat. When a constant voltage is input, the resistance of the sliding rheostat differs at different valve positions, resulting in different voltage drops across the rheostat. Therefore, by monitoring the resistance of the sliding rheostat, the specific position of the valve can be determined, enabling accurate and rapid determination of whether the electric switching valve is in the correct position. This facilitates valve calibration and improves the speed of electric switching valve calibration.

[0057] In some embodiments of this application, the processing module 302 is specifically used for: Control the electric switching valve to switch to the target conduction position; If the valve switching command is executed, the actual open position of the electric switching valve is determined. Obtain the initial current resistance value of the sliding rheostat when the electric switching valve is in the actual conducting position; The initial current resistance value is calibrated to obtain the current resistance value.

[0058] In some embodiments of this application, the processing module 302 is further configured to: Obtain the current temperature of the space where the sliding rheostat is located; Determine the corresponding resistance temperature offset based on the current ambient temperature; Based on the resistance temperature offset, the initial current resistance value is calibrated to obtain the current resistance value.

[0059] In some embodiments of this application, the processing module 302 is further configured to: Determine the error level based on the location switching error; If the error level is the target error level, then it is determined that the electric switching valve needs to be calibrated; If the error level is not the target error level, then it is determined that the electric switching valve will not be calibrated.

[0060] In some embodiments of this application, the processing module 302 is further configured to: Obtain different error level coefficients; Based on the error level coefficients and the target resistance value, different error level ranges are determined, and each error level range corresponds to its own error level. Determine the target error level range for the current resistance value; Determine the error level based on the target error level range.

[0061] In some embodiments of this application, the processing module 302 is further configured to: If it is determined that the electric switching valve needs to be calibrated, then the electric switching valve is reset to the reference conduction position. If the electric switching valve is determined to be in the reference conduction position, then the electric switching valve is controlled to switch to the target conduction position, thereby completing the calibration of the electric switching valve.

[0062] In some embodiments of this application, the processing module 302 is further configured to: If the electric switching valve is not in the target set position during the first target time interval, the electric switching valve is controlled to reset to the reference conduction position according to the preset second time interval.

[0063] This application also provides a refrigerator, which includes a processor, a memory, and a computer program stored in the memory and executable on the processor. The processor executes the computer program to implement the steps of the refrigeration equipment control method according to any one of the embodiments of this application. This refrigerator integrates any one of the refrigeration equipment control methods provided in the embodiments of this application, such as... Figure 4 As shown, it illustrates a structural schematic diagram of the refrigerator involved in an embodiment of this application. Specifically: The refrigerator may include components such as a processor 401 with one or more processing cores, a memory 402 with one or more computer-readable storage media, a power supply 403, and an input unit 404. Those skilled in the art will understand that... Figure 4 The refrigerator structure shown does not constitute a limitation on the refrigerator and may include more or fewer components than shown, or combine certain components, or have different component arrangements. Wherein: The processor 401 is the control center of the refrigerator. It connects to various parts of the refrigerator via various interfaces and lines. By running or executing software programs and / or modules stored in the memory 402, and by calling data stored in the memory 402, it performs various functions and processes data, thereby providing overall monitoring of the refrigerator. Optionally, the processor 401 may include one or more processing cores. The processor 401 may be a Central Processing Unit (CPU), or other general-purpose processors, digital signal processors (DSPs), application-specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. The general-purpose processor may be a microprocessor or any conventional processor. Preferably, the processor 401 may integrate an application processor and a modem processor. The application processor mainly handles the operating system, user interface, and application programs, while the modem processor mainly handles wireless communication. It is understood that the modem processor may not be integrated into the processor 401.

[0064] The memory 402 can be used to store software programs and modules. The processor 401 executes various functional applications and data processing by running the software programs and modules stored in the memory 402. The memory 402 may mainly include a program storage area and a data storage area. The program storage area may store the operating system, application programs required for at least one function (such as sound playback function, image playback function, etc.), etc.; the data storage area may store data created based on the use of the refrigerator, etc. In addition, the memory 402 may include high-speed random access memory, and may also include non-volatile memory, such as at least one disk storage device, flash memory device, or other volatile solid-state storage device. Accordingly, the memory 402 may also include a memory controller to provide the processor 401 with access to the memory 402.

[0065] The refrigerator also includes a power supply 403 that supplies power to the various components. Preferably, the power supply 403 can be logically connected to the processor 401 through a power management system, thereby enabling functions such as charging, discharging, and power consumption management through the power management system. The power supply 403 may also include one or more DC or AC power supplies, a recharging system, a power fault detection circuit, a power converter or inverter, a power status indicator, or any other components.

[0066] The refrigerator may also include an input unit 404, which can be used to receive input digital or character information, and generate keyboard, joystick, optical or trackball signal inputs related to user settings and function control.

[0067] Although not shown, the refrigerator may also include a display unit, etc., which will not be described in detail here. Specifically, in this embodiment, the processor 401 in the refrigerator loads the executable files corresponding to the processes of one or more application programs into the memory 402 according to the following instructions, and the processor 401 runs the application programs stored in the memory 402 to realize various functions, such as: Obtain valve switching commands for controlling the electric switching valve; Based on the valve switching command, determine the target conduction position to be switched by the electric switching valve; Control the electric switching valve to switch to the target conducting position, and obtain the current resistance value of the sliding rheostat when the electric switching valve is in the actual conducting position; Based on the current resistance value and the target resistance value corresponding to the target conduction position, determine the position switching error between the actual conduction position and the target conduction position; Based on the position switching error, determine whether to calibrate the electrically operated switching valve.

[0068] Those skilled in the art will understand that all or part of the steps in the various methods of the above embodiments can be performed by instructions, or by instructions controlling related hardware. These instructions can be stored in a computer-readable storage medium and loaded and executed by a processor.

[0069] Therefore, embodiments of this application provide a computer-readable storage medium, which may include: read-only memory (ROM), random access memory (RAM), a magnetic disk, or an optical disk, etc. A computer program is stored thereon, and the computer program is loaded by a processor to execute the steps in any of the refrigeration equipment control methods provided in embodiments of this application. For example, the computer program loaded by the processor can execute the following steps: Obtain valve switching commands for controlling the electric switching valve; Based on the valve switching command, determine the target conduction position to be switched by the electric switching valve; Control the electric switching valve to switch to the target conducting position, and obtain the current resistance value of the sliding rheostat when the electric switching valve is in the actual conducting position; Based on the current resistance value and the target resistance value corresponding to the target conduction position, determine the position switching error between the actual conduction position and the target conduction position; Based on the position switching error, determine whether to calibrate the electrically operated switching valve.

[0070] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the detailed descriptions of other embodiments above, which will not be repeated here.

[0071] In practice, each of the above units or structures can be implemented as an independent entity or can be arbitrarily combined to be implemented as the same or several entities. For the specific implementation of each of the above units or structures, please refer to the previous method embodiments, which will not be repeated here.

[0072] For details on the implementation of each of the above operations, please refer to the previous examples, which will not be repeated here.

[0073] The above provides a detailed description of a refrigeration equipment control method and apparatus provided in the embodiments of this application. Specific examples have been used to illustrate the principles and implementation methods of this application. The description of the above embodiments is only for the purpose of helping to understand the method and core ideas of this application. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of this application. Therefore, the content of this specification should not be construed as a limitation of this application.

Claims

1. A method for controlling a refrigeration equipment, characterized in that, The method is applied to a target refrigeration device, which includes an electrically operated switching valve and a sliding rheostat for supplying refrigerated air to different food storage compartments. The electrically operated switching valve and the sliding rheostat are connected in series in the circuit, and the valve of the electrically operated switching valve is also physically connected to the sliding element of the sliding rheostat through a rigid component. Obtain the valve switching command that controls the electric switching valve; Based on the valve switching command, determine the target conduction position to be switched by the electric switching valve; Control the electric switching valve to switch to the target conducting position, and obtain the current resistance value of the sliding rheostat when the electric switching valve is in the actual conducting position; Based on the current resistance value and the target resistance value corresponding to the target conduction position, determine the position switching error between the actual conduction position and the target conduction position; Based on the position switching error, determine whether to control the electric switching valve for calibration.

2. The refrigeration equipment control method according to claim 1, characterized in that, The process of controlling the electric switching valve to switch to the target conducting position and obtaining the current resistance value of the sliding rheostat when the electric switching valve is in the actual conducting position includes: Control the electric switching valve to switch to the target conduction position; If the valve switching command is executed, the actual conduction position of the electric switching valve is determined. Obtain the initial current resistance value of the sliding rheostat when the electric switching valve is in the actual conducting position; The initial current resistance value is calibrated to obtain the current resistance value.

3. The refrigeration equipment control method according to claim 2, characterized in that, The step of calibrating the initial current resistance value to obtain the current resistance value includes: Obtain the current space temperature of the space where the sliding rheostat is located; Based on the current space temperature, determine the corresponding resistance temperature offset; Based on the resistance temperature offset, the initial current resistance value is calibrated to obtain the current resistance value.

4. The refrigeration equipment control method according to claim 1, characterized in that, The step of determining whether to control the electric switching valve for calibration based on the position switching error includes: The error level is determined based on the location switching error. If the error level is the target error level, then it is determined that the electric switching valve needs to be calibrated; If the error level is not the target error level, then it is determined that the electric switching valve will not be calibrated.

5. The refrigeration equipment control method according to claim 4, characterized in that, Determining the error level based on the location switching error includes: Obtain different error level coefficients; Based on the error level coefficients and the target resistance value, different error level ranges are determined, and each error level range corresponds to its respective error level. Determine the target error level range in which the current resistance value falls; The error level is determined based on the target error level range.

6. The refrigeration equipment control method according to claim 1, characterized in that, The step of determining whether to control the electric switching valve for calibration based on the position switching error includes: If it is determined that the electric switching valve needs to be calibrated, then the electric switching valve is reset to the reference conduction position. If the electric switching valve is determined to be in the reference conduction position, then the electric switching valve is controlled to switch to the target conduction position, thereby completing the calibration of the electric switching valve.

7. The refrigeration equipment control method according to claim 1, characterized in that, After determining whether to control the electric switching valve for calibration based on the position switching error, the method further includes: If the electric switching valve is not in the target set position during the first target time interval, then the electric switching valve is controlled to reset to the reference conduction position according to the preset second time interval.

8. A control device for refrigeration equipment, characterized in that, An application is made in a target refrigeration device, the target refrigeration device including an electrically operated switching valve and a sliding rheostat for supplying refrigerated air to different food storage compartments, the electrically operated switching valve and the sliding rheostat being connected in series in a circuit, and the valve of the electrically operated switching valve being physically connected to the sliding element of the sliding rheostat via a rigid component, the device comprising: The acquisition module is used to acquire valve switching commands that control the electric switching valve; The processing module is used to determine the target conduction position to be switched by the electric switching valve according to the valve switching command; The processing module is also used to control the electric switching valve to switch to the target conduction position, and to obtain the current resistance value of the sliding rheostat when the electric switching valve is in the actual conduction position; The processing module is further configured to determine the position switching error between the actual conduction position and the target conduction position based on the current resistance value and the target resistance value corresponding to the target conduction position; The processing module is also used to determine whether to control the electric switching valve for calibration based on the position switching error.

9. A refrigerator, characterized in that, The refrigerator includes a processor, a memory, and a computer program stored in the memory and executable on the processor, the processor executing the computer program to implement the steps of the refrigeration equipment control method according to any one of claims 1 to 7.

10. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores a computer program that is executed by a processor to implement the steps of the refrigeration equipment control method according to any one of claims 1 to 7.

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