A control method and device for compressor operation, a refrigeration apparatus, and a storage medium

Abstract

The application provides a control method and device for compressor operation, a refrigeration equipment and a storage medium. The method is applied to the refrigeration equipment, the refrigeration equipment comprises a compressor and a variable frequency module, the compressor and the variable frequency module are connected, and the method comprises the following steps: acquiring a first module temperature of the variable frequency module when the variable frequency module controls the compressor to operate at a first rotating speed; determining a temperature change trend of the variable frequency module based on the first module temperature; if the temperature change trend is an upward trend, controlling the compressor to operate at a second rotating speed; and if the temperature change trend is a downward trend, controlling the compressor to operate at a third rotating speed. The second rotating speed is smaller than the first rotating speed, and the third rotating speed is greater than the first rotating speed. The method can realize the protection of the variable frequency module and the efficient operation of the compressor.

Description

Technical Field

[0001] This application relates to the field of variable frequency refrigeration technology, and more specifically, to a method, apparatus, refrigeration equipment, and storage medium for controlling the operation of a compressor in the field of variable frequency refrigeration technology. Background Technology

[0002] Compressors compress refrigerants (such as Freon) to a high-pressure state, playing a crucial role in the cooling function of refrigeration equipment such as air conditioners and refrigerators. Inverter compressors primarily change the power supply frequency through an inverter module. If the inverter module overheats, it can burn out. Summary of the Invention

[0003] This application provides a method, apparatus, refrigeration equipment, and storage medium for controlling the operation of a compressor. The method can protect the inverter module while controlling the compressor to operate efficiently.

[0004] In a first aspect, a method for controlling the operation of a compressor is provided. This method is applied to a refrigeration device, which includes a compressor and a frequency converter module. The compressor and the frequency converter module are connected. The method includes: obtaining a first module temperature of the frequency converter module when the compressor is running at a first speed controlled by the frequency converter module; determining the temperature change trend of the frequency converter module based on the first module temperature; if the temperature change trend is an upward trend, controlling the compressor to run at a second speed; if the temperature change trend is a downward trend, controlling the compressor to run at a third speed, wherein the second speed is less than the first speed and the third speed is greater than the first speed.

[0005] Secondly, a device for controlling a refrigeration equipment is provided, applied to a refrigeration equipment including a compressor and a frequency converter module connected together. The device includes: an acquisition unit for acquiring a first module temperature of the frequency converter module when the compressor is running at a first speed controlled by the frequency converter module; a determination unit for determining the temperature change trend of the frequency converter module based on the first module temperature; a first control unit for controlling the compressor to run at a second speed if the temperature change trend is upward; and a second control unit for controlling the compressor to run at a third speed if the temperature change trend is downward, wherein the second speed is less than the first speed and the third speed is greater than the first speed.

[0006] Thirdly, a refrigeration device is provided, comprising: a memory for storing executable program code; and a processor for calling and running the executable program code from the memory, causing the refrigeration device to perform the method described in the first aspect or any possible implementation thereof.

[0007] Fourthly, a computer program product is provided, comprising: computer program code, which, when run on a computer, causes the computer to perform the methods described in the first aspect or any possible implementation thereof.

[0008] Fifthly, a computer-readable storage medium is provided that stores computer program code, which, when executed on a computer, causes the computer to perform the methods described in the first aspect or any possible implementation thereof.

[0009] In this embodiment, when the temperature change trend is upward, the compressor speed is reduced to decrease the heat generated by the inverter module during compressor operation, thus preventing the inverter module temperature from rising further. Conversely, when the inverter module temperature is determined to be downward, the compressor speed is increased to prevent the compressor from remaining in a low-power state. This achieves both protection of the inverter module and efficient compressor operation. Attached Figure Description

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

[0011] Figure 2 This is a flowchart illustrating a compressor operation control method provided in an embodiment of this application;

[0012] Figure 3 This is a flowchart illustrating a compressor operation control method provided in an embodiment of this application;

[0013] Figure 4 This is a flowchart illustrating a compressor operation control method provided in an embodiment of this application;

[0014] Figure 5 This is a schematic diagram of the structure of a compressor operation control device provided in an embodiment of this application;

[0015] Figure 6 This is a schematic diagram of the structure of a refrigeration device provided in an embodiment of this application. Detailed Implementation

[0016] The technical solutions in this application will be clearly and thoroughly described below with reference to the accompanying drawings. In the description of the embodiments of this application, unless otherwise stated, " / " means "or," for example, A / B can mean A or B. "And / or" in the text is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. Furthermore, in the description of the embodiments of this application, "multiple" refers to two or more than two.

[0017] Hereinafter, the terms "first" and "second" are used for descriptive purposes only and should not be construed as implying or suggesting relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature.

[0018] Figure 1 This is a schematic diagram of a refrigeration device provided in an embodiment of this application. During operation, the refrigeration device compresses a low-temperature, low-pressure gaseous refrigerant into a high-temperature, high-pressure gaseous refrigerant using a compressor. This allows the high-temperature, high-pressure gaseous refrigerant to release heat more effectively in the condenser, thereby improving refrigeration efficiency. For a fixed-frequency compressor, its speed is fixed, meaning it operates at a set frequency. In contrast, a variable-frequency compressor adjusts its speed by changing the frequency of the AC power supplied to the compressor through a variable-frequency module; that is, the compressor speed is controlled by the variable-frequency module.

[0019] When a variable frequency drive (VFD) module controls a compressor to operate at a certain speed, the semiconductor devices (such as IGBTs) inside the module convert direct current (DC) to alternating current (AC) through rapid switching. During switching operations, these devices incur switching losses, generating heat. The higher the compressor speed, the more frequently the semiconductor devices in the VFD module switch, resulting in greater switching losses and more heat generation. If the VFD module consistently controls the compressor's operation at a high module temperature, it will degrade the performance of the internal components and, in severe cases, damage the VFD module itself.

[0020] Based on this, this application proposes a compressor operation control method. When the refrigeration equipment controls the compressor to perform refrigeration, the method obtains the first module temperature of the inverter module when the compressor is running at a first speed. Based on the first module temperature, the temperature change trend of the inverter module is determined. If the temperature change trend is determined to be upward, the compressor is controlled to run at a second speed; if the temperature change trend is determined to be downward, the compressor is controlled to run at a third speed. The second speed is lower than the first speed, and the third speed is higher than the first speed. By controlling the compressor speed to decrease when the temperature change trend is upward, the heat generated by the inverter module during compressor operation is reduced, preventing the inverter module temperature from rising further. Conversely, by increasing the compressor speed when the inverter module temperature is determined to be downward, the compressor is prevented from remaining in a low-power state. This achieves both protection of the inverter module and efficient compressor operation.

[0021] based on Figure 1 The structural diagram shown below will be combined with... Figures 2-4 The present application provides a detailed description of the compressor operation control method provided in the embodiments.

[0022] Please see Figure 2 This is a flowchart illustrating a compressor operation control method provided in an embodiment of this application. Figure 2 As shown, the method in this application embodiment may include the following steps S101-S104.

[0023] S101, Obtain the first module temperature of the inverter module when the compressor is running at the first speed controlled by the inverter module;

[0024] Specifically, when the inverter module controls the compressor to run at the first speed, the semiconductor devices (such as IGBTs) in the inverter module convert DC power to AC power through rapid switching. This conversion incurs switching losses, which are converted into heat, causing the inverter module's temperature to rise. The first temperature is the temperature at which the inverter module controls the compressor to run at the first speed, and it can be obtained through a temperature detection component.

[0025] Optionally, the temperature sensing component can be a surface-mount thermistor. The resistance value of the surface-mount thermistor is related to the temperature of its mounting location. Therefore, by obtaining the resistance of the surface-mount thermistor, the initial module temperature in the frequency converter module can be obtained. The surface-mount thermistor can be placed near the IGBT semiconductor device in the frequency converter module. It can be understood that the frequency converter module mainly generates heat when converting DC to AC through the IGBT. Therefore, by placing the surface-mount thermistor near the IGBT semiconductor device, the initial module temperature of the frequency converter module when controlling the compressor to run at the first speed can be accurately obtained.

[0026] S102, determine the temperature change trend of the frequency converter module based on the temperature of the first module;

[0027] In one embodiment, the temperature of the first module of the inverter module is obtained by a temperature detection component when the compressor is running at a first speed controlled by multiple inverter modules, and then the temperature change trend of the inverter module is determined based on the multiple first module temperatures.

[0028] S103, if the temperature change trend is upward, control the compressor to run at the second speed;

[0029] Specifically, when the temperature change trend is determined to be upward, it indicates that the inverter module generates a large amount of heat while controlling the compressor to run at the first speed, causing the module temperature to rise. To prevent the inverter module temperature from continuing to rise and reducing its operating performance, it is necessary to reduce the compressor speed, i.e., control the compressor to run at a second speed. It is understood that, in this embodiment, by reducing the compressor speed, the frequency of switching operations performed by the switching elements in the inverter module is correspondingly reduced, effectively reducing the generated heat and thus lowering the temperature of the inverter control module.

[0030] Optionally, the second speed can be a preset speed, which is a lower speed at which the compressor operates.

[0031] S104 If the temperature change trend is downward, control the compressor to run at the third speed, where the second speed is less than the first speed and the third speed is greater than the first speed.

[0032] In one embodiment, when the temperature change trend is determined to be a downward trend, it indicates that the load on the frequency converter module is relatively light and the heat generated is relatively small. The compressor can be controlled to run at the third speed to increase the compressor speed and improve the compressor's operating power.

[0033] Optionally, the third speed can be the operating speed of the compressor that meets the set cooling capacity.

[0034] In this embodiment, when the temperature change trend is upward, the compressor speed is reduced to decrease the heat generated by the inverter module during compressor operation, thus preventing the inverter module temperature from rising further. Conversely, when the inverter module temperature is determined to be downward, the compressor speed is increased to prevent the compressor from remaining in a low-power state. This achieves both protection of the inverter module and efficient compressor operation.

[0035] Please see Figure 3 This is a flowchart illustrating a compressor operation control method provided in an embodiment of this application. Figure 3As shown, the method in this application embodiment may include the following steps S201-S206.

[0036] S201, Obtain the temperature of the second module of the inverter module when the compressor is running at maximum speed under the control of the inverter module;

[0037] In one embodiment, the frequency converter module controls the compressor to run at its maximum speed, and the temperature of the second module when the frequency converter module controls the compressor to run at this speed is obtained through a surface-mount thermistor.

[0038] Optionally, in this embodiment of the application, when the frequency converter controls the compressor to run at maximum speed, the frequency at which the surface mount thermistor collects the temperature of the second module of the frequency converter can be reduced, thereby reducing the time delay of the collected temperature of the frequency converter and accurately obtaining the temperature of the frequency converter during the control process.

[0039] S202, If the temperature of the second module is greater than the temperature threshold, then control the compressor to run at the first speed;

[0040] In one embodiment, when it is determined that the temperature of the second module is greater than the temperature threshold, it is determined that when the inverter module controls the compressor to run at the maximum speed, the temperature of the second module of the inverter module is high, and it is necessary to reduce the operating speed of the compressor to avoid the temperature of the second module of the inverter module from continuing to rise. That is, the compressor is controlled to run at the first speed to reduce the temperature of the second module of the inverter module.

[0041] In this embodiment, when the inverter module controls the compressor to run at its maximum speed, the semiconductor devices in the inverter module operate at a high frequency, generating a lot of heat. To avoid generating more heat by the semiconductor switches performing switching operations at a high frequency, when the temperature of the second module is greater than the temperature threshold, the compressor is directly controlled to run at the first speed to reduce the operating speed of the compressor and achieve the purpose of quickly reducing the temperature of the inverter module.

[0042] S203, obtain the first module temperature of the inverter module when the compressor is running at the first speed controlled by the inverter module;

[0043] S204, Determine the temperature change trend of the frequency converter module based on the temperature of the first module;

[0044] S205, if the temperature change trend is upward, control the compressor to run at the second speed;

[0045] S206, If the temperature change trend is downward, control the compressor to run at the third speed, where the second speed is less than the first speed and the third speed is greater than the first speed;

[0046] Specifically, for the steps of obtaining the first module temperature of the frequency converter module when the compressor is running at the first speed controlled by the frequency converter module, and then controlling the speed of the compressor based on the first module temperature, please refer to the description of steps S101 to S104 in the above-mentioned embodiment of the specification, which will not be repeated here.

[0047] It is understandable that when the inverter module controls the compressor to run at its maximum speed, if the temperature of the second module of the inverter module is detected to be higher than the temperature threshold, and the compressor speed is reduced to the first speed, the problem of excessively high temperature still exists when the inverter module controls the compressor to run at the first speed. In this embodiment, the temperature change trend of the first module when the inverter module controls the compressor to run at the first speed is obtained to determine whether to further reduce the operating speed of the compressor, thereby reducing the module temperature of the inverter module. By gradually reducing the operating speed of the compressor, the module temperature of the inverter module is reduced, avoiding the problem of a rapid drop in cooling capacity caused by a sudden reduction in the operating speed of the compressor. Furthermore, when the compressor is running at the first speed, controlling the operating speed of the compressor by the temperature change trend can prevent the module temperature of the inverter module from rising to the temperature threshold again, and can control the operating speed of the compressor in advance to reduce the module temperature of the inverter module.

[0048] In one embodiment, when the inverter module controls the compressor to run at maximum speed, if the temperature of the second module of the inverter module is decreasing, or the second temperature of the inverter module controls the compressor to run at maximum speed.

[0049] Further, in this embodiment of the application, obtaining the first module temperature of the inverter module when the compressor is running at a first speed controlled by the inverter module includes:

[0050] S301, Obtain the first temperature of the inverter module collected at the first moment when the inverter module controls the compressor to run at the first speed;

[0051] S302, Obtain the second temperature of the inverter module collected when the inverter module controls the compressor to run at the first speed at the second moment;

[0052] In one embodiment, when the inverter module controls the compressor to run at a first speed, after the compressor runs at the first speed for a first preset time, a first moment is determined to be reached, and the first temperature of the inverter module is obtained; and after the compressor runs at the first speed for a second preset time, a second moment is determined to be reached, and the second temperature of the inverter module is obtained, wherein the first preset time is less than the second preset time.

[0053] For example, in the embodiments of this application, the first preset duration can be 2 minutes and the second preset duration can be 3 minutes.

[0054] Furthermore, the temperature change trend of the inverter module is determined based on the temperature of the first module, including:

[0055] S303, the temperature change trend of the frequency converter module is determined based on the first temperature and the second temperature, wherein the first module temperature includes the first temperature and the second temperature.

[0056] In one embodiment, if the first temperature is greater than or equal to the second temperature, the temperature change trend of the frequency converter module is determined to be a downward trend; if the first temperature is less than the second temperature, the temperature change trend of the frequency converter module is determined to be an upward trend.

[0057] It is understandable that the first moment of collecting the first temperature is before the second moment of collecting the second temperature. When it is determined that the first temperature is greater than or equal to the second temperature, it means that the module temperature collected at the first moment is greater than the module temperature collected at the second moment, and the temperature change trend is determined to be a downward trend. When it is determined that the first temperature is less than the second temperature, it means that the module temperature collected at the first moment is less than the module temperature collected at the second moment, and the temperature change trend is determined to be an upward trend.

[0058] For example, if the first temperature collected at the first moment is 65 degrees Celsius (°C) and the second temperature collected at the second moment is 76°C, then the temperature change trend of the frequency converter module is determined to be an upward trend; in another case, if the first temperature collected at the first moment is 70°C and the second temperature collected at the second moment is 60°C, then the temperature change trend of the frequency converter module is determined to be a downward trend.

[0059] In this embodiment, by controlling the compressor to run at a first speed when the compressor is running at its maximum speed and the second module temperature of the inverter module is greater than or equal to a temperature threshold, the compressor's operating speed is reduced, thereby lowering the inverter module's temperature. This avoids the inverter module's temperature from becoming too high and affecting its control performance. Furthermore, by collecting the first temperature at a first moment when the inverter module controls the compressor to run at the first speed and the second temperature at a second moment when the inverter module controls the compressor to run at the first speed, the temperature change trend of the inverter module is determined using the first and second temperatures. By using the actual collected temperatures of the inverter module at different moments, the temperature change trend of the inverter module can be accurately determined. Moreover, when the first temperature is greater than or equal to the second temperature, the temperature change trend of the inverter module is determined to be a downward trend; when the first temperature is less than the second temperature, the temperature change trend of the inverter module is determined to be an upward trend, thus achieving accurate determination of the inverter module's temperature change trend.

[0060] Please see Figure 4 This is a flowchart illustrating a compressor operation control method provided in an embodiment of this application. Figure 4As shown, the method in this application embodiment may include the following steps S401-S404.

[0061] S401, Obtain the first module temperature of the inverter module when the compressor is running at the first speed controlled by the inverter module;

[0062] S402, determine the temperature change trend of the frequency converter module based on the temperature of the first module;

[0063] For details, please refer to the descriptions of steps S101 to S102 in the embodiments of the above specification, which will not be repeated here.

[0064] S403, if the first speed is the minimum speed of the compressor and the temperature change trend is upward, then control the compressor to shut down;

[0065] In one embodiment, after determining that the first speed is the minimum speed of the compressor, and the temperature change trend is upward, if it is determined that the module temperature of the inverter module will continue to rise even when the compressor is currently running at the minimum speed, then the compressor is shut down, that is, the inverter module is also stopped controlling the compressor. In this way, the inverter module will no longer generate heat, thus preventing the module temperature of the inverter module from continuing to rise and damaging the internal components of the inverter module.

[0066] S404 If the first speed is not the compressor's minimum speed and the temperature change trend is upward, then control the compressor to run at the second speed.

[0067] In one embodiment, if it is determined that the first speed is not the minimum speed of the compressor and the temperature change trend is upward, and it is determined that the operating speed of the compressor can still be further reduced, then the compressor is controlled to run at the second speed. By reducing the operating speed of the compressor, the heat generated by the inverter module during the operation of the compressor is reduced.

[0068] Furthermore, in this embodiment of the application, when it is determined that the temperature change trend is an upward trend, the compressor is controlled to run at a second speed, specifically: when the temperature change trend is an upward trend, a first temperature change rate of the upward trend is obtained, and then based on the first change range in which the first temperature change rate is located, a second speed of the compressor corresponding to the first change range is determined, and the compressor is controlled to run at the second speed.

[0069] Specifically, there are multiple first variation ranges, and each variation range corresponds to a second speed. The larger the first temperature change rate, the smaller the second speed of the variation range corresponding to the first temperature change rate. By controlling the compressor to run at a lower speed when the temperature rises rapidly, the temperature of the frequency converter module can be prevented from continuing to rise.

[0070] Furthermore, in this embodiment of the application, when the temperature change trend is determined to be a downward trend, the compressor is controlled to run at a third speed. Specifically, when the temperature change trend is a downward trend, a second temperature change rate of the downward trend is obtained, and then based on the second change range in which the second temperature change rate is located, a third speed of the compressor corresponding to the second change range is determined, and the compressor is controlled to run at the third speed.

[0071] Specifically, there are multiple second temperature change ranges, and each temperature change range corresponds to a third rotation speed. The greater the second temperature change rate, the greater the third rotation speed of the corresponding temperature change range. By controlling the compressor to operate at a higher speed when the temperature drops rapidly, the operating efficiency of the compressor can be improved.

[0072] In this embodiment, when the compressor is running at its minimum speed and the temperature change trend of the inverter module is detected to be upward, the compressor is shut down to prevent the inverter module from continuing to control the compressor's operation, which would cause the module temperature to continue to rise and damage the internal components of the inverter module. Furthermore, when the temperature change trend is upward, a second speed corresponding to the first change range of the first temperature change rate is determined, and the compressor is controlled to run at the second speed, which can effectively prevent the module temperature of the inverter module from continuing to rise. When the temperature change trend is downward, a third speed corresponding to the second change range of the second temperature change rate is determined, and the compressor is controlled to run at the third speed, which can improve the operating efficiency of the compressor.

[0073] based on Figure 1 The structural diagram is shown below, in conjunction with... Figure 5 This application provides a detailed description of the compressor operation control device provided in the embodiments. It should be noted that... Figure 5 The control device for operating the compressor in the present application is used to perform the operation of the compressor in the present application. Figures 2-4 The methods shown in the embodiments are for illustrative purposes only, illustrating the parts relevant to the embodiments of this application. For specific technical details not disclosed, please refer to this application. Figures 2-4 The illustrated embodiment. Specifically, the compressor operation control device 1 includes:

[0074] Acquisition unit 11 is used to acquire the first module temperature of the inverter module when the inverter module controls the compressor to run at the first speed;

[0075] Determining unit 12 is used to determine the temperature change trend of the frequency converter module based on the temperature of the first module;

[0076] The first control unit 13 is used to control the compressor to run at a second speed if the temperature change trend is an upward trend;

[0077] The second control unit 14 is used to control the compressor to run at a third speed if the temperature change trend is downward. The second speed is less than the first speed, and the third speed is greater than the first speed.

[0078] Optionally, the compressor operation control device 1 further includes:

[0079] Temperature acquisition unit 15 is used to acquire the temperature of the second module of the inverter module when the inverter module controls the compressor to run at maximum speed;

[0080] The third control unit 16 is used to control the compressor to run at a first speed if the temperature of the second module is greater than or equal to the temperature threshold.

[0081] Optionally, the first control unit 13 includes:

[0082] The first control subunit 131 is used to control the compressor to shut down if the first speed is the minimum speed of the compressor and the temperature change trend is upward.

[0083] The second control subunit 132 is used to control the compressor to run at the second speed if the first speed is not the minimum speed of the compressor and the temperature change trend is upward.

[0084] Optionally, the acquisition unit 11 includes:

[0085] The first acquisition subunit 111 is used to acquire the first temperature of the inverter module collected when the inverter module controls the compressor to run at the first speed at the first moment;

[0086] The second acquisition subunit 112 is used to acquire the second temperature of the inverter module collected when the inverter module controls the compressor to run at the first speed at the second moment;

[0087] Determining the temperature change trend of the inverter module based on the temperature of the first module includes:

[0088] The first determining subunit 113 is used to determine the temperature change trend of the frequency converter module based on the first temperature and the second temperature. The first module temperature includes the first temperature and the second temperature.

[0089] Optionally, the first determining subunit 113 is specifically used for:

[0090] If the first temperature is greater than or equal to the second temperature, the temperature change trend of the frequency converter module is determined to be a downward trend.

[0091] If the first temperature is lower than the second temperature, the temperature change trend of the frequency converter module is determined to be an upward trend.

[0092] Optionally, the first control unit 13 includes:

[0093] The third acquisition subunit 131 is used to acquire the first change range in which the first temperature change rate is located if the temperature change trend is an upward trend.

[0094] The second determining subunit 132 is used to determine the second speed of the compressor corresponding to the first variation range;

[0095] The third control subunit 133 is used to control the compressor to run at the second speed.

[0096] Optionally, the first control unit 13 includes:

[0097] The fourth acquisition subunit 134 is used to acquire the second change range of the second temperature change rate if the temperature change trend is a downward trend.

[0098] The third determining subunit 135 is used to determine the third speed of the compressor corresponding to the second variation range;

[0099] The fourth control subunit 136 is used to control the compressor to run at the third speed.

[0100] In this embodiment, when the temperature change trend is upward, the compressor speed is reduced to decrease the heat generated by the inverter module during compressor operation, thus preventing the inverter module temperature from rising further. Conversely, when the inverter module temperature is determined to be downward, the compressor speed is increased to prevent the compressor from remaining in a low-power state. This achieves both protection of the inverter module and efficient compressor operation.

[0101] Please see Figure 6 This is a schematic diagram of a refrigeration device provided in an embodiment of this application. Figure 6 As shown, the cooling device 500 includes a processor 501 and a memory 502. The processor 501 and the memory 502 are electrically connected.

[0102] The processor 501 is the control center of the cooling device 500 and may include one or more processing cores. The processor 501 connects to various parts of the cooling device 500 using various interfaces and lines. By running or calling computer programs stored in the memory 502, and by calling data stored in the memory 502, it executes various functions and processes data of the cooling device 500, thereby providing overall control of the cooling device 500. Optionally, the processor 501 may be implemented using at least one of the following hardware forms: Digital Signal Processing (DSP), Field Programmable Gate Array (FPGA), and Programmable Logic Array (PLA). The processor 501 may integrate one or more of the following: CPU, Graphics Processing Unit (GPU), and modem. The CPU primarily handles the operating system, user page, 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 the processor 501 and may be implemented separately using a communication chip.

[0103] The memory 502 can be used to store software programs and modules. The processor 501 executes various functional applications and data processing by running the computer programs and modules stored in the memory 502. The memory 502 may mainly include a program storage area and a data storage area. The program storage area may store the operating system, computer programs required for at least one function, etc.; the data storage area may store data created based on the use of the cooling device 500, etc.

[0104] Furthermore, memory 502 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, memory 502 may also include a memory controller to provide processor 501 with access to memory 502.

[0105] In this embodiment, the processor 501 in the cooling device 500 loads the instructions corresponding to the processes of one or more computer programs into the memory 502 according to the following steps, and the processor 501 runs the computer programs stored in the memory 502 to realize various functions, as follows:

[0106] The temperature of the first module of the inverter module is obtained when the compressor is running at the first speed controlled by the inverter module.

[0107] The temperature change trend of the frequency converter module is determined based on the temperature of the first module.

[0108] If the temperature change trend is upward, then control the compressor to run at the second speed.

[0109] If the temperature trend is downward, the compressor is controlled to run at the third speed, where the second speed is less than the first speed and the third speed is greater than the first speed.

[0110] Optionally, before executing the process of obtaining the first module temperature of the inverter module when the inverter module controls the compressor to run at the first speed, the processor 501 also executes:

[0111] Obtain the temperature of the second module of the inverter module when the compressor is running at maximum speed under the control of the inverter module;

[0112] If the temperature of the second module is greater than or equal to the temperature threshold, the compressor is controlled to run at the first speed.

[0113] Optionally, when the processor 501 executes the command to control the compressor to run at a second speed if the temperature change trend is upward, it specifically performs the following:

[0114] If the first speed is the compressor's minimum speed and the temperature change trend is upward, then the compressor will be shut down.

[0115] If the first speed is not the compressor's minimum speed, and the temperature change trend is upward, then control the compressor to run at the second speed.

[0116] Optionally, when the processor 501 executes the process of obtaining the first module temperature of the inverter module when the inverter module controls the compressor to run at the first speed, it specifically performs the following:

[0117] The first temperature of the inverter module is acquired at the first moment when the inverter module controls the compressor to run at the first speed.

[0118] The second temperature of the inverter module is acquired at the second moment when the inverter module controls the compressor to run at the first speed.

[0119] Determining the temperature change trend of the inverter module based on the temperature of the first module includes:

[0120] The temperature change trend of the frequency converter module is determined based on the first temperature and the second temperature. The first module temperature includes the first temperature and the second temperature.

[0121] Optionally, when the processor 501 determines the temperature change trend of the inverter module based on the first temperature and the second temperature, it specifically performs the following:

[0122] If the first temperature is greater than or equal to the second temperature, the temperature change trend of the frequency converter module is determined to be a downward trend.

[0123] If the first temperature is lower than the second temperature, the temperature change trend of the frequency converter module is determined to be an upward trend.

[0124] Optionally, when the processor 501 executes the command to control the compressor to run at a second speed if the temperature change trend is upward, it specifically performs the following:

[0125] If the temperature change trend is upward, then obtain the first change range in which the first temperature change rate is located;

[0126] Determine the second speed of the compressor corresponding to the first variation range;

[0127] Control the compressor to run at the second speed.

[0128] Optionally, when the processor 501 executes the command to control the compressor to run at the third speed if the temperature change trend is downward, it specifically performs the following:

[0129] If the temperature change trend is downward, then obtain the second change range in which the second temperature change rate is located;

[0130] Determine the third speed of the compressor corresponding to the second variation range;

[0131] Control the compressor to run at the third speed.

[0132] In this embodiment, when the temperature change trend is upward, the compressor speed is reduced to decrease the heat generated by the inverter module during compressor operation, thus preventing the inverter module temperature from rising further. Conversely, when the inverter module temperature is determined to be downward, the compressor speed is increased to prevent the compressor from remaining in a low-power state. This achieves both protection of the inverter module and efficient compressor operation.

[0133] It should be understood that the apparatus provided in this application embodiment is used to execute the above-described compressor operation control method, and therefore can achieve the same effect as the above-described implementation method.

[0134] When using integrated units, the device may include a processing module and a storage module. Specifically, when the device is applied to refrigeration equipment, the processing module can be used to control and manage the operation of the refrigeration equipment. The storage module can be used to support the execution of relevant program code by the refrigeration equipment.

[0135] The processing module may be a processor or a controller, which can implement or execute the various exemplary logic blocks, modules, and circuits described in conjunction with the disclosure of this application. The processor may also be a combination of functions that implement computing capabilities, such as a combination of one or more microprocessors, a combination of digital signal processing (DSP) and a microprocessor, etc., and the storage module may be a memory.

[0136] In addition, the device provided in this application embodiment may specifically be a chip, component or module. The chip may include a connected processor and a memory. The memory is used to store instructions. When the processor calls and executes the instructions, the chip can execute a compressor operation control method provided in the above embodiment.

[0137] This application also provides a computer-readable storage medium storing computer program code. When the computer program code is run on a computer, the computer executes the above-described related method steps to implement a compressor operation control method provided in the above embodiments.

[0138] This embodiment also provides a computer program product that, when run on a computer, causes the computer to perform the aforementioned steps to implement a compressor operation control method provided in the above embodiment.

[0139] In this embodiment, the device, computer-readable storage medium, computer program product, or chip are all used to execute the corresponding methods provided above. Therefore, the beneficial effects they can achieve can be referred to the beneficial effects in the corresponding methods provided above, and will not be repeated here.

[0140] Through the above description of the embodiments, those skilled in the art will understand that, for the sake of convenience and brevity, only the division of the above functional modules is used as an example. In actual applications, the above functions can be assigned to different functional modules as needed, that is, the internal structure of the device can be divided into different functional modules to complete all or part of the functions described above.

[0141] In the embodiments provided in this application, it should be understood that the disclosed apparatus and methods can be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative; for instance, the division of modules or units is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another device, or some features may be ignored or not executed. Furthermore, the coupling or direct coupling or communication connection shown or discussed may be through some interfaces; the indirect coupling or communication connection between devices or units may be electrical, mechanical, or other forms.

[0142] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A method for controlling the operation of a compressor, characterized in that, Applied to refrigeration equipment, the refrigeration equipment including a compressor and a frequency converter module, the compressor and the frequency converter module being connected, the method comprising: The first module temperature of the inverter module is obtained when the compressor is running at a first speed controlled by the inverter module. The temperature change trend of the frequency converter module is determined based on the temperature of the first module. If the temperature change trend is upward, then control the compressor to operate at the second speed; If the temperature change trend is downward, then the compressor is controlled to operate at a third speed, where the second speed is less than the first speed and the third speed is greater than the first speed; If the temperature change trend is upward, then controlling the compressor to operate at a second speed includes: If the temperature change trend is upward, then the first change range in which the first temperature change rate of the upward trend is located is obtained; Determine the second speed of the compressor corresponding to the first variation range; Control the compressor to operate at the second speed; If the temperature change trend is downward, then controlling the compressor to operate at a third speed includes: If the temperature change trend is downward, then obtain the second change range in which the second temperature change rate of the downward trend is located; Determine the third speed of the compressor corresponding to the second variation range; The compressor is controlled to operate at the third speed.

2. The method according to claim 1, characterized in that, Before obtaining the first module temperature of the inverter module when the compressor is controlled to run at a first speed by the inverter module, the method further includes: The temperature of the second module of the frequency converter module is obtained when the compressor is running at maximum speed under the control of the frequency converter module. If the temperature of the second module is greater than or equal to the temperature threshold, then the compressor is controlled to run at the first speed.

3. The method according to claim 1, characterized in that, If the temperature change trend is upward, then controlling the compressor to operate at a second speed includes: If the first rotational speed is the minimum rotational speed of the compressor, and the temperature change trend is upward, then the compressor is controlled to shut down. If the first speed is not the minimum speed of the compressor, and the temperature change trend is upward, then the compressor is controlled to operate at the second speed.

4. The method according to claim 1, characterized in that, The step of obtaining the first module temperature of the inverter module when the compressor is running at a first speed controlled by the inverter module includes: The first temperature of the inverter module is acquired at the first moment when the inverter module controls the compressor to run at the first speed. The second temperature of the frequency converter module is acquired at the second moment when the frequency converter module controls the compressor to run at the first speed. The step of determining the temperature change trend of the inverter module based on the temperature of the first module includes: The temperature change trend of the frequency converter module is determined based on the first temperature and the second temperature, wherein the first module temperature includes the first temperature and the second temperature.

5. The method according to claim 4, characterized in that, Determining the temperature change trend of the frequency converter module based on the first temperature and the second temperature includes: If the first temperature is greater than or equal to the second temperature, the temperature change trend of the frequency converter module is determined to be a downward trend. If the first temperature is lower than the second temperature, the temperature change trend of the frequency converter module is determined to be an upward trend.

6. A control device for operating a compressor, characterized in that, Applied to refrigeration equipment, the refrigeration equipment includes a compressor and a frequency converter module, the compressor and the frequency converter module are connected, and the device includes: The acquisition unit is used to acquire the first module temperature of the inverter module when the compressor is running at a first speed controlled by the inverter module; A determining unit is used to determine the temperature change trend of the frequency converter module based on the temperature of the first module. A first control unit is configured to control the compressor to operate at a second speed if the temperature change trend is an upward trend. The second control unit is configured to control the compressor to operate at a third speed if the temperature change trend is a downward trend, wherein the second speed is less than the first speed and the third speed is greater than the first speed. The first control unit includes: The third acquisition subunit is used to acquire the first change range in which the first temperature change rate of the upward trend is located if the temperature change trend is an upward trend. The second determining subunit is used to determine the second speed of the compressor corresponding to the first variation range; The third control subunit is used to control the compressor to operate at the second speed. The second control unit includes: The fourth acquisition subunit is used to acquire the second change range in which the second temperature change rate of the downward trend is located if the temperature change trend is a downward trend. The third determining subunit is used to determine the third speed of the compressor corresponding to the second variation range; The fourth control subunit is used to control the compressor to operate at the third speed.

7. A refrigeration device, characterized in that, The refrigeration equipment includes: Memory, used to store executable program code; A processor for calling and running the executable program code from the memory, causing the refrigeration device to perform the method as described in any one of claims 1 to 5.

8. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores computer program code that, when executed, implements the method as described in any one of claims 1 to 5.

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