Compressor frequency control method, device, equipment and storage medium

Abstract

An embodiment of the present invention relates to a method, apparatus, device, and storage medium for controlling the frequency of a compressor. The method comprises: when a first temperature of a device is greater than a first temperature threshold, controlling the compressor of the device to turn on; obtaining a first operating time of the compressor, and obtaining a second temperature of the device; determining an adjustment strategy for the operating frequency of the compressor based on the first operating time and the second temperature; and controlling the operating frequency of the compressor based on the adjustment strategy. Thus, the operating frequency of the compressor can be automatically adjusted based on the operating time of the compressor and the corresponding device temperature. The compressor will not always maintain a high operating frequency, and the operating frequency of the compressor can be adjusted based on the actual operating conditions and actual temperature, thereby reducing the energy consumption of the device while meeting the cooling needs of the device.

Description

Technical Field

[0001] Embodiments of the present invention relate to the technical field of compressor control, and in particular to a method, apparatus, device, and storage medium for controlling compressor frequency. Background Art

[0002] The compressor is the heart of the refrigeration system and is primarily categorized as fixed-frequency compressors and variable-frequency compressors. Fixed-frequency compressors maintain a relatively constant speed, relying on constant on-off cycles to adjust the ambient temperature. This can easily cause the environment to fluctuate between hot and cold, and consume a significant amount of electricity. Variable-frequency compressors, on the other hand, vary the compressor's power supply frequency and speed, adjusting the compressor's speed. These speeds control the ambient temperature, resulting in minimal temperature fluctuations and low energy consumption. For variable-frequency compressors, a control module is built into the refrigeration equipment's main control board, connecting the temperature sensor and the variable-frequency refrigeration compressor. The control module controls and regulates the operation of the variable-frequency refrigeration compressor based on the online temperature value measured and transmitted by the temperature sensor and a pre-set temperature differential.

[0003] To ensure proper operation of the refrigeration system, a target compressor operating frequency is assigned for the set temperature. However, this frequency may not match the heat load of the freezer. A low target frequency may prevent the system from reaching the set temperature or may take a long time to reach the set temperature. A high target frequency, while allowing the system to quickly reach the set temperature, results in a high pressure ratio and increased energy consumption. Therefore, how to regulate the compressor to achieve the set temperature while maintaining energy efficiency has become a pressing issue. Summary of the Invention

[0004] In view of this, in order to solve the above-mentioned technical problem of how to make the equipment temperature reach the set temperature while saving energy, the embodiments of the present invention provide a compressor frequency control method, device, equipment and storage medium.

[0005] In a first aspect, an embodiment of the present invention provides a method for controlling a compressor frequency, comprising:

[0006] When the current first temperature of the device is greater than a first temperature threshold, controlling the compressor of the device to turn on;

[0007] Acquire a first operating time of the compressor, and acquire a second temperature of the device, where the second temperature represents a current temperature of the compressor after the compressor has operated for the first operating time;

[0008] determining an adjustment strategy for the operating frequency of the compressor according to the first operating time and the second temperature;

[0009] The operating frequency of the compressor is controlled according to the adjustment strategy.

[0010] In one possible implementation, when the first temperature of the device is greater than a first threshold, controlling the compressor of the device to turn on includes:

[0011] When the device starts to operate, turning on the compressor;

[0012] When the first temperature of the device is less than a second temperature threshold, controlling the compressor to shut down;

[0013] When a first temperature of the device is greater than or equal to a first temperature threshold, the compressor is controlled to start and operate at a target frequency, and the second temperature threshold is less than the first temperature threshold.

[0014] In one possible implementation, the strategy for adjusting the operating frequency of the compressor according to the first operating time and the second temperature includes:

[0015] When the first operating time is greater than a first time threshold and the second temperature is greater than a third temperature threshold, the adjustment strategy is determined to be a first strategy, and the first strategy is used to increase the operating frequency.

[0016] In one possible implementation, the strategy for adjusting the operating frequency of the compressor according to the first operating time and the second temperature includes:

[0017] When the first operating time is greater than a first time threshold and the second temperature is less than or equal to the third temperature threshold, the adjustment strategy is determined to be a second strategy, and the second strategy is used to control the operating frequency of the next working cycle to be consistent with the operating frequency of the current working cycle when the next working cycle of the compressor begins.

[0018] In a possible implementation, adjusting the operating frequency of the compressor according to the adjustment strategy includes:

[0019] When the adjustment strategy is the first strategy, controlling the operating frequency to increase to a first frequency, the first frequency being greater than the target frequency;

[0020] When the compressor operates at the first frequency for a second operating time and the second temperature is greater than the third temperature threshold, controlling the operating frequency to increase to a second frequency, the second operating time is less than the first operating time, and the second frequency is greater than the first frequency;

[0021] When the compressor operates at the second frequency for a third operating time and the second temperature is greater than the third temperature threshold, the operating frequency is controlled to increase to a maximum frequency, and the third operating time is less than the second operating time.

[0022] In one possible implementation, the strategy for adjusting the operating frequency of the compressor according to the first operating time and the second temperature includes:

[0023] When the first operating time is less than or equal to a first time threshold and the second temperature is less than or equal to a third temperature threshold, the adjustment strategy is determined to be a third strategy, and the third strategy is used to reduce the operating frequency of the next working cycle when the next working cycle of the compressor begins.

[0024] In a possible implementation, adjusting the operating frequency of the compressor according to the adjustment strategy includes:

[0025] When the adjustment strategy is the third strategy, when the compressor enters the next working cycle, controlling the operating frequency to decrease to the third frequency;

[0026] Alternatively, when the compressor enters a next working cycle, if the difference between the second temperature and the third temperature threshold is greater than a first set value, the operating frequency is controlled to decrease to a fourth frequency, and the fourth frequency is less than the third frequency;

[0027] Alternatively, when the compressor enters the next working cycle, if the difference between the second temperature and the third temperature threshold is greater than the second set value, the operating frequency is controlled to be reduced to a fifth frequency, the fifth frequency is less than the fourth frequency, and the first set value is less than the second set value.

[0028] In a second aspect, an embodiment of the present invention provides a compressor frequency control device, comprising:

[0029] a control module, configured to control a compressor of the device to start when a current first temperature of the device is greater than a first temperature threshold;

[0030] an acquisition module, configured to acquire a first operating time of the compressor and a second temperature of the device, wherein the second temperature represents a current temperature of the compressor after the compressor has run for the first operating time;

[0031] a determining module, configured to determine an adjustment strategy for the operating frequency of the compressor according to the first operating time and the second temperature;

[0032] The control module is further configured to control the operating frequency of the compressor according to the adjustment strategy.

[0033] In a third aspect, an embodiment of the present invention provides a device comprising: a processor and a memory, wherein the processor is configured to execute a code generation program stored in the memory to implement the compressor frequency control method described in any one of the first aspects above.

[0034] In a fourth aspect, an embodiment of the present invention provides a storage medium, which stores one or more programs, and the one or more programs can be executed by one or more processors to implement the compressor frequency control method described in any one of the first aspects above.

[0035] The compressor frequency control scheme provided in an embodiment of the present invention controls the compressor of the device to turn on when the first temperature of the device is greater than a first temperature threshold; obtains the first operating time of the compressor and the second temperature of the device; determines an adjustment strategy for the operating frequency of the compressor based on the first operating time and the second temperature; and controls the operating frequency of the compressor based on the adjustment strategy. Thus, the operating frequency of the compressor can be automatically adjusted based on the operating time of the compressor and the corresponding device temperature. The compressor will not always maintain a high operating frequency, and the operating frequency of the compressor can be adjusted based on the actual operating conditions and actual temperature, thereby reducing the energy consumption of the device while meeting the cooling needs of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 A flow chart of a method for controlling compressor frequency provided by an embodiment of the present invention;

[0037] Figure 2 A flow chart of another method for controlling the frequency of a compressor provided by an embodiment of the present invention;

[0038] Figure 3 A flow chart of another method for controlling compressor frequency provided by an embodiment of the present invention;

[0039] Figure 4 A schematic structural diagram of a compressor frequency control device provided by an embodiment of the present invention;

[0040] Figure 5 A schematic structural diagram of a device provided in an embodiment of the present invention. DETAILED DESCRIPTION

[0041] To make the objectives, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts shall fall within the scope of protection of the present invention.

[0042] To facilitate understanding of the embodiments of the present invention, specific embodiments will be further explained below with reference to the accompanying drawings. The embodiments do not limit the embodiments of the present invention.

[0043] Figure 1 A flow chart of a method for controlling the frequency of a compressor provided by an embodiment of the present invention is shown in FIG. Figure 1 As shown, the method specifically includes:

[0044] S11 . When a first temperature of a device is greater than a first temperature threshold, control a compressor of the device to start.

[0045] The compressor frequency control method provided in an embodiment of the present invention is applied to refrigeration equipment, which may include but is not limited to: air-conditioning equipment, thermal insulation box equipment, etc. The refrigeration equipment is provided with a compressor. Specifically, the operating frequency of the compressor is adjusted in real time according to the operating time of the compressor and the corresponding equipment temperature, so as to achieve energy saving while adjusting the compressor frequency so that the equipment temperature quickly reaches the set temperature.

[0046] In this embodiment, when the refrigeration equipment is powered on for the first time, the compressor is turned on and the equipment goes through a rapid warm-up stage. When the temperature of the equipment drops to the set temperature, the compressor is controlled to stop. At this time, the current temperature of the equipment is continuously obtained as the first temperature. After a period of time, the first temperature will rise. When the first temperature reaches the first temperature threshold, the compressor is controlled to be turned on again and run at a preset frequency. The preset frequency can be set according to the ambient temperature and the set temperature of the equipment. Each ambient temperature and the set temperature of the equipment within the threshold range corresponds to a preset frequency.

[0047] S12: Acquire a first operating time of the compressor and acquire a second temperature of the device.

[0048] In this embodiment, after the compressor is restarted, the compressor continues to run, and the duration of the continuous operation of the compressor from the start-up time to the current time is obtained in real time, and the said duration is used as the first running time, and the current temperature of the equipment is obtained in real time as the second temperature.

[0049] S13. Determine an adjustment strategy for the operating frequency of the compressor according to the first operating time and the second temperature.

[0050] In this embodiment, multiple time thresholds are pre-set for determining the compressor operating time. The first operating time is sequentially compared with the pre-set time thresholds to determine whether the first operating time has currently reached the time threshold. When the first operating time reaches the first time threshold, it is determined whether the second temperature meets the compressor shutdown condition. Meeting the compressor shutdown condition means that the second temperature is at least a fixed value lower than the set temperature (for example, the fixed value is 5 degrees, the set temperature is 60 degrees, and when the second temperature is 50 degrees, it is determined that the second temperature meets the compressor shutdown condition, and when the second temperature is 58 degrees, it is determined that the second temperature does not meet the compressor shutdown condition). When the second temperature does not meet the compressor shutdown condition, it indicates that the device temperature is too high and does not meet the operating requirements, and needs to be quickly cooled to the set temperature. In this case, the adjustment strategy is determined to be the first strategy, which is used to increase the compressor operating frequency. When the second temperature meets the compressor shutdown condition, it indicates that the device temperature has dropped to meet the operating requirements. In this case, the adjustment strategy is determined to be the second strategy, which is used to control the compressor to shut down and control the compressor to maintain the operating frequency of the previous cycle at the beginning of the next working cycle.

[0051] S14. Control the operating frequency of the compressor according to the adjustment strategy.

[0052] In this embodiment, when the adjustment strategy is the first strategy, the operating frequency of the compressor is increased by one level based on the current frequency (for example, the first level is 5Hz, the current frequency is 60Hz, and the operating frequency is increased to 65Hz according to the first strategy). After running for a period of time at the operating frequency increased by one level, when the first operating time reaches the second time threshold, it is continued to be judged whether the second temperature meets the compressor shutdown condition. When the compressor shutdown condition is not met, the operating frequency of the compressor is continued to be controlled to increase by one level, and run according to the operating frequency increased by one level. When the first operating time reaches the third time threshold, it is continued to be judged whether the second temperature meets the compressor shutdown condition. When the compressor shutdown condition is not met, the operating frequency of the compressor is increased to full frequency and continues to run until the compressor shutdown condition is met, and the compressor is controlled to stop. After any increase in the operating frequency, if the second temperature meets the compressor shutdown condition, the control strategy will be adjusted to the second strategy, indicating that the second temperature meets the working requirements at this time. The compressor is controlled to shut down according to the second strategy, and the current operating frequency is recorded. When the second temperature is increased to a temperature higher than the preset equipment temperature, it means that the next working cycle has begun and the compressor needs to be restarted and operated according to the working frequency recorded in the previous cycle.

[0053] The compressor frequency control method provided by an embodiment of the present invention controls the compressor of the device to turn on when the first temperature of the device is greater than a first temperature threshold; obtains the first operating time of the compressor and the second temperature of the device; determines an adjustment strategy for the operating frequency of the compressor based on the first operating time and the second temperature; and controls the operating frequency of the compressor based on the adjustment strategy. Thus, the operating frequency of the compressor can be automatically adjusted based on the operating time of the compressor and the corresponding device temperature. The compressor will not always maintain a high operating frequency, and the operating frequency of the compressor can be adjusted based on the actual operating conditions and actual temperature, thereby reducing the energy consumption of the device while meeting the cooling needs of the device.

[0054] Figure 2 A flow chart of another method for controlling the frequency of a compressor provided by an embodiment of the present invention is shown as follows: Figure 2 As shown, the method specifically includes:

[0055] When a first temperature of the device is greater than a first temperature threshold, controlling a compressor of the device to turn on;

[0056] obtaining a first operating time of the compressor and obtaining a second temperature of the device;

[0057] determining an adjustment strategy for the operating frequency of the compressor according to the first operating time and the second temperature;

[0058] The operating frequency of the compressor is controlled according to the adjustment strategy.

[0059] S21. When the device starts running, turn on the compressor; when the first temperature of the device is less than the second temperature threshold, control the compressor to turn off; when the first temperature of the device is greater than or equal to the first temperature threshold, control the compressor to turn on and run at the target frequency.

[0060] In this embodiment, when the refrigeration equipment starts running for the first time, the compressor is turned on, and the equipment will quickly warm up and obtain the temperature of the equipment in real time as the first temperature. When the first temperature is lower than the preset second temperature threshold, the compressor is controlled to be turned off, where the second temperature threshold represents a threshold value that is a fixed value lower than the set temperature. For example, the second temperature is Tx, the set temperature is Ts, and the fixed value is T1. When Tx drops from the ambient temperature to a fixed value lower than the set temperature, that is, Tx≤Ts-T1, the compressor is shut down and the pre-cooling stage ends. The refrigeration equipment then officially starts to adjust the working frequency to perform the start and stop stages, and the refrigeration system operates stably.

[0061] Furthermore, the temperature of the device is continuously obtained as the first temperature. Since the shutdown of the compressor will cause the first temperature of the device to rise, when the first temperature rises to a value greater than the first temperature threshold, the first temperature threshold represents a threshold value that is a fixed value higher than the set temperature, and the compressor is controlled to start and operate according to the preset target frequency. The second temperature threshold is less than the first temperature threshold. Among them, the target frequency Fs is determined based on the ambient temperature Ta and the set temperature Ts. The target frequency is positively correlated with the ambient temperature and negatively correlated with the set temperature. That is, if the ambient temperature is high and the set temperature is low, then lowering the device temperature to the set temperature requires more cooling, so the preset target frequency Fs is higher; if the ambient temperature is low and the set temperature is high, then lowering the device temperature to the set temperature provides less cooling, so the preset target frequency Fs is lower. The specific relationship between Fs, Ta and Ts is shown in the following table. The target frequency when the compressor is turned on can be determined based on the table, where F11>F12, F21>F13, F22, F31>F14, F23, F32>F24, F33>F34:

[0062]

[0063] S22: Acquire a first operating time of the compressor and acquire a second temperature of the device.

[0064] In this embodiment, similar to step S12, please refer to Figure 1 For the sake of brevity, the relevant description will not be repeated here.

[0065] S23: When the first operating time is greater than a first time threshold and the second temperature is greater than a third temperature threshold, determine that the adjustment strategy is the first strategy.

[0066] In this embodiment, a first time threshold is set in advance (for example, ten minutes), and it is determined whether the first operating time of the continuous operation of the compressor is greater than the first time threshold. When it is greater, it is determined whether the current second temperature of the device is greater than the third temperature threshold. The third temperature threshold can be a set temperature, or a fixed value lower than the set temperature of the device. The third temperature threshold can be set according to work requirements (for example, the set temperature to which the device needs to be lowered is 50 degrees, the third temperature threshold can be 50 degrees, or, when the fixed value is 5 degrees, the third temperature threshold can be 45 degrees). When the second temperature is greater than the third temperature threshold, it means that the current temperature of the device is too high and the compressor shutdown condition is not met. At this time, the adjustment strategy is determined to be the first strategy. The first strategy is used to increase the operating frequency of the compressor to quickly reduce the temperature of the device.

[0067] S24. When the first operating time is greater than a first time threshold and the second temperature is less than or equal to the third temperature threshold, the adjustment strategy is determined to be a second strategy, and the second strategy is used to control the operating frequency of the next working cycle to be consistent with the operating frequency of the current working cycle when the next working cycle of the compressor begins.

[0068] In this embodiment, when the first operating time is greater than the first time threshold and the second temperature is less than or equal to the third temperature threshold, it indicates that the current device temperature has dropped to a temperature that meets operating requirements and satisfies the compressor's shutdown condition. The adjustment strategy is determined to be the second strategy, which is used to shut down the current compressor and record the operating frequency of the current operating cycle. When the next operating cycle begins, the operating frequency of the next operating cycle is controlled to be consistent with the operating frequency of the current operating cycle. A working cycle consists of the compressor turning on and off after the shutdown condition is met. When the device temperature rises to greater than the first temperature threshold, the compressor meets the start condition and enters the next working cycle.

[0069] In one possible embodiment, when the first operating time is less than or equal to the first time threshold and the second temperature is less than or equal to the third temperature threshold, the adjustment strategy is determined to be the third strategy, which is used to reduce the operating frequency of the next working cycle at the beginning of the next working cycle of the compressor.

[0070] Specifically, since the device temperature can be quickly reduced to less than the third temperature threshold at the current operating frequency during the current working cycle, the compressor can be controlled to reduce the operating frequency (for example, reduce one gear) according to the third strategy at the beginning of the next working cycle, thereby saving compressor energy consumption.

[0071] S25. Control the operating frequency of the compressor according to the adjustment strategy.

[0072] In this embodiment, when the adjustment strategy is the first strategy, the operating frequency is controlled to be increased to the first frequency, and the first frequency is greater than the target frequency; when the compressor runs at the first frequency for the second operating time and the second temperature is greater than the third temperature threshold, the operating frequency is controlled to be increased to the second frequency.

[0073] Specifically, the first frequency is a frequency one gear higher than the current target frequency (for example, the first gear is 5Hz, the target frequency is 50Hz, and the first frequency is 55Hz). Set the second operating time, which is less than the first operating time. After the frequency is increased to the first frequency, the operating time is restarted. When the compressor runs at the first frequency for a period of time that reaches the second operating time, determine whether the current second temperature is greater than the third temperature threshold. If the judgment result is greater than, it indicates that the current device temperature is too high and the operating frequency needs to be further increased. At this time, the operating frequency is controlled to be increased to the second frequency, which is greater than the first frequency. The second frequency is a frequency one gear higher than the first frequency (for example, the first gear is 5Hz, the first frequency is 55Hz, and the second frequency is 60Hz).

[0074] Furthermore, the operating time and the second temperature are continued to be judged. When the compressor operates at the second frequency for the third operating time and the second temperature is greater than the third temperature threshold, the operating frequency is controlled to be increased to the maximum frequency, and the third operating time is less than the second operating time.

[0075] Specifically, a third operating time is set, and the third operating time is less than the second operating time. After the frequency is increased to the second frequency, the operating time is restarted. When the time for the compressor to run at the second frequency reaches the third operating time, it is determined whether the current second temperature is greater than the third temperature threshold. When the judgment result is greater than, it indicates that the current device temperature is too high and the operating frequency needs to be further increased. At this time, the operating frequency is controlled to be increased to the maximum frequency of the compressor.

[0076] When the adjustment strategy is the second strategy, the current compressor is controlled to be turned off, and the operating frequency of the current working cycle is recorded. When the next working cycle starts, the operating frequency of the next working cycle is controlled to be consistent with the operating frequency of the current working cycle.

[0077] In one possible embodiment, when the adjustment strategy is the third strategy, when the compressor enters the next working cycle, the operating frequency is controlled to be reduced to the third frequency; or, if the difference between the second temperature and the third temperature threshold is greater than the first set value, the operating frequency is controlled to be reduced to the fourth frequency, and the fourth frequency is less than the third frequency; or, if the difference between the second temperature and the third temperature threshold is greater than the second set value, the operating frequency is controlled to be reduced to the fifth frequency, and the fifth frequency is less than the fourth frequency.

[0078] Specifically, the frequency of the current operating cycle is recorded. When entering the next operating cycle, a third frequency is pre-set, which is one level lower than the frequency of the current operating cycle. When the second temperature is less than the third set threshold, it indicates that the device temperature has dropped to a certain value below the operating temperature required. At this time, the operating frequency is controlled to be reduced to the third frequency, thereby reducing the power consumption of the compressor while controlling the device to cool down. When the difference between the second temperature and the third temperature threshold is greater than the first set value, it indicates that the second temperature is too low compared to the third temperature threshold. The operating frequency of the compressor can be appropriately reduced in the next operating cycle to achieve low power consumption. Therefore, the operating frequency is controlled to be reduced to a fourth frequency, which can be one level lower than the third frequency. When the difference between the second temperature and the third temperature threshold is greater than the second set value, the operating frequency is controlled to be reduced to a fifth frequency. The first set value is less than the second set value. The fifth frequency can be one level lower than the fourth frequency.

[0079] As an example, Figure 3 FIG. 1 is a flow chart of another method for controlling the frequency of a compressor provided by an embodiment of the present invention. Figure 3 As shown, the method specifically includes: when the refrigeration equipment passes through the warming stage and the equipment temperature Tx drops from the ambient temperature to a certain value lower than the set temperature, that is, Tx≤Ts-T1, the compressor stops at this time, and the system officially enters the start-up and shutdown stage, and the system operates stably. The first operating frequency of the compressor after the refrigeration equipment operates stably is the preset target frequency Fs. The timing starts at the moment the compressor starts. The first continuous operation time t of the compressor is compared with the preset first time threshold t1. When t reaches t1 and the compressor shutdown condition is not met, the compressor operating frequency is controlled to increase by 1 level. Preferably, level 1 is 5Hz, that is, the compressor operating frequency becomes the target operating frequency + 5Hz. Among them, the compressor shutdown condition refers to the temperature of the equipment dropping to a certain value lower than the set temperature, that is, when Tx≤Ts-T, it is determined that the compressor shutdown condition is met, and the compressor is controlled to stop running at this time. After the compressor is shifted up, if the compressor operating frequency has not reached full frequency (e.g., full frequency is 75Hz), the timer will be reset to zero and the compressor will continue to run for a period of time t after the shift is up compared with the preset t2. If the compressor shutdown condition is not met when the running time t reaches t2, the compressor frequency will be increased by one level. If the compressor operating frequency still has not reached full frequency, the timer will be reset to zero and the compressor will continue to run for a period of time t after the shift is up compared with the preset t3. If the compressor shutdown condition is not met when the running time t reaches t3, the compressor operating frequency will be increased to full frequency and maintained at this frequency until the compressor meets the shutdown condition, where t1>t2>t3. In the next cooling cycle, that is, when the compressor start-up condition is met, the compressor operating frequency will run at the frequency after the previous cooling cycle. The compressor start-up condition refers to the equipment temperature returning to a certain value higher than the set temperature, that is, Tx≥Ts+T2, at which time the compressor starts and begins to run.

[0080] Under the stable operation state, when the continuous operation time t of the compressor is compared with t0 and the operation time t has not reached the preset time t0, the compressor meets the shutdown condition. At this time, Δt = t0 - t. If the difference Δt > 0, in the next refrigeration cycle, the operation frequency of the compressor is reduced by one gear; if the difference Δt ≥ t4, in the next refrigeration cycle, the frequency is reduced by two gears; if the difference Δt ≥ t5, in the next refrigeration cycle, the operation frequency of the compressor is reduced by three gears, where t5 > t4.

[0081] Further, where t0 < t1, if in the next refrigeration cycle, the continuous operation time t of the compressor satisfies t0 ≤ t ≤ t1, the compressor maintains this frequency increase of 0 and frequency decrease operation.

[0082] The control of the compressor frequency provided by the embodiment of the present invention includes: when the device starts to operate, starting the compressor; when the first temperature of the device is less than the second temperature threshold, controlling the compressor to shut down; when the first temperature of the device is greater than or equal to the first temperature threshold, controlling the compressor to start and operate at the target frequency; obtaining the first operation duration of the compressor and obtaining the second temperature of the device; when the first operation duration is greater than the first time threshold and the second temperature is greater than the third temperature threshold, determining that the adjustment strategy is the first strategy; when the first operation duration is greater than the first time threshold and the second temperature is less than or equal to the third temperature threshold, determining that the adjustment strategy is the second strategy, and the second strategy is used to control the operating frequency of the next working cycle to be the same as the operating frequency of the current working cycle when the next working cycle of the compressor starts; controlling the operating frequency of the compressor according to the adjustment strategy. Thus, the operating frequency of the compressor can be adjusted according to the temperature of the device and the current operation duration of the compressor. When the temperature has not dropped to the target temperature, the operating frequency of the compressor is increased, and when the temperature drops to a certain value lower than the target temperature, the operating frequency of the compressor is decreased, realizing the control of the refrigerating capacity of the device by combining the operation time of the compressor to control the frequency of the frequency converter, making the device temperature stable and the entire refrigeration system more energy-efficient.

[0083] Figure 4 The structural schematic diagram of a control device for the compressor frequency provided by the embodiment of the present invention is as Figure 4 shown, and the method specifically includes:

[0084] The control module 41 is used to control the compressor of the device to start when the current first temperature of the device is greater than the first temperature threshold;

[0085] The acquisition module 42 is used to acquire the first operation duration of the compressor and acquire the second temperature of the device, and the second temperature represents the current temperature after the compressor operates for the first operation duration;

[0086] a determination module 43, configured to determine an adjustment strategy for the operating frequency of the compressor according to the first operating time and the second temperature;

[0087] The control module is further configured to control the operating frequency of the compressor according to the adjustment strategy.

[0088] In a possible implementation manner, the control module is specifically configured to start the compressor when the device starts running;

[0089] When the first temperature of the device is less than a second temperature threshold, controlling the compressor to shut down;

[0090] When a first temperature of the device is greater than or equal to a first temperature threshold, the compressor is controlled to start and operate at a target frequency, and the second temperature threshold is less than the first temperature threshold.

[0091] In one possible implementation, the determination module is specifically configured to determine that the adjustment strategy is a first strategy for increasing the operating frequency when the first operating time is greater than a first time threshold and the second temperature is greater than a third temperature threshold.

[0092] In one possible embodiment, the determination module is specifically used to determine that the adjustment strategy is a second strategy when the first operating time is greater than a first time threshold and the second temperature is less than or equal to the third temperature threshold. The second strategy is used to control the operating frequency of the next working cycle to be consistent with the operating frequency of the current working cycle when the next working cycle of the compressor begins.

[0093] In a possible implementation, the control module is specifically configured to, when the adjustment strategy is a first strategy, control the operating frequency to increase to a first frequency, where the first frequency is greater than the target frequency;

[0094] When the compressor operates at the first frequency for a second operating time and the second temperature is greater than the third temperature threshold, controlling the operating frequency to increase to a second frequency, the second operating time is less than the first operating time, and the second frequency is greater than the first frequency;

[0095] When the compressor operates at the second frequency for a third operating time and the second temperature is greater than the third temperature threshold, the operating frequency is controlled to increase to a maximum frequency, and the third operating time is less than the second operating time.

[0096] In one possible embodiment, the determination module is specifically used to determine that the adjustment strategy is a third strategy when the first operating time is less than or equal to a first time threshold and the second temperature is less than or equal to a third temperature threshold. The third strategy is used to reduce the operating frequency of the next working cycle at the beginning of the next working cycle of the compressor.

[0097] In a possible implementation manner, the control module is specifically configured to, when the adjustment strategy is the third strategy and the compressor enters a next working cycle, control the operating frequency to decrease to a third frequency;

[0098] Alternatively, when the compressor enters a next working cycle, if the difference between the second temperature and the third temperature threshold is greater than a first set value, the operating frequency is controlled to decrease to a fourth frequency, and the fourth frequency is less than the third frequency;

[0099] Alternatively, when the compressor enters the next working cycle, if the difference between the second temperature and the third temperature threshold is greater than the second set value, the operating frequency is controlled to be reduced to a fifth frequency, the fifth frequency is less than the fourth frequency, and the first set value is less than the second set value.

[0100] The compressor frequency control device provided by the embodiment of the present invention can be as follows: Figure 4 The code processing device shown in , can execute Figure 1-3 All steps of the method for controlling the frequency of the compressor are achieved Figure 1-3 For details on the technical effects of the compressor frequency control method shown, please refer to Figure 1-3 For the sake of brevity, the relevant description will not be repeated here.

[0101] Figure 5 A schematic diagram of the structure of a device provided in an embodiment of the present invention is provided. Figure 5 The device 500 shown includes: at least one processor 501, a memory 502, at least one network interface 504 and other user interfaces 503. The various components in the device 500 are coupled together via a bus system 505. It is understood that the bus system 505 is used to achieve connection and communication between these components. In addition to including a data bus, the bus system 505 also includes a power bus, a control bus and a status signal bus. However, for the sake of clarity, the bus system 505 is not shown in FIG. Figure 5 Various buses are labeled as bus system 505.

[0102] The user interface 503 may include a display, a keyboard, or a pointing device (eg, a mouse, a trackball, a touchpad, or a touch screen).

[0103] It is understood that the memory 502 in the embodiment of the present invention can be a volatile memory or a non-volatile memory, or can include both volatile and non-volatile memories. Among them, the non-volatile memory can be a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM), or a flash memory. The volatile memory can be a random access memory (RAM), which is used as an external cache. By way of example and not limitation, many forms of RAM are available, such as static random access memory (SRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (SDRAM), double data rate synchronous dynamic random access memory (DDRSDRAM), enhanced synchronous dynamic random access memory (ESDRAM), synchronous link DRAM (SLDRAM), and direct RAM bus random access memory (DRRAM). The memory 502 described herein is intended to include, but is not limited to, these and any other suitable types of memory.

[0104] In some embodiments, the memory 502 stores the following elements, executable units, or data structures, or a subset thereof, or an extended set thereof: an operating system 5021 and application programs 5022 .

[0105] The operating system 5021 includes various system programs, such as a framework layer, a core library layer, and a driver layer, for implementing various basic services and handling hardware-based tasks. Application programs 5022 include various application programs, such as a media player and a browser, for implementing various application services. Programs implementing the methods of the embodiments of the present invention may be included in application programs 5022.

[0106] In an embodiment of the present invention, by calling a program or instruction stored in the memory 502, specifically, a program or instruction stored in the application 5022, the processor 501 is configured to execute the method steps provided in each method embodiment, for example, including:

[0107] When the current first temperature of the device is greater than a first temperature threshold, controlling the compressor of the device to turn on;

[0108] Acquire a first operating time of the compressor, and acquire a second temperature of the device, where the second temperature represents a current temperature of the compressor after the compressor has operated for the first operating time;

[0109] determining an adjustment strategy for the operating frequency of the compressor according to the first operating time and the second temperature;

[0110] The operating frequency of the compressor is controlled according to the adjustment strategy.

[0111] In one possible implementation, when the device starts running, the compressor is turned on;

[0112] When the first temperature of the device is less than a second temperature threshold, controlling the compressor to shut down;

[0113] When a first temperature of the device is greater than or equal to a first temperature threshold, the compressor is controlled to start and operate at a target frequency, and the second temperature threshold is less than the first temperature threshold.

[0114] In a possible implementation, when the first operating time is greater than a first time threshold and the second temperature is greater than a third temperature threshold, the adjustment strategy is determined to be a first strategy for increasing the operating frequency.

[0115] In one possible embodiment, when the first operating time is greater than a first time threshold and the second temperature is less than or equal to the third temperature threshold, the adjustment strategy is determined to be a second strategy, and the second strategy is used to control the operating frequency of the next working cycle to be consistent with the operating frequency of the current working cycle when the next working cycle of the compressor begins.

[0116] In one possible implementation, when the adjustment strategy is the first strategy, the operating frequency is controlled to increase to a first frequency, where the first frequency is greater than the target frequency;

[0117] When the compressor operates at the first frequency for a second operating time and the second temperature is greater than the third temperature threshold, controlling the operating frequency to increase to a second frequency, the second operating time is less than the first operating time, and the second frequency is greater than the first frequency;

[0118] When the compressor operates at the second frequency for a third operating time and the second temperature is greater than the third temperature threshold, the operating frequency is controlled to increase to a maximum frequency, and the third operating time is less than the second operating time.

[0119] In one possible embodiment, when the first operating time is less than or equal to a first time threshold and the second temperature is less than or equal to a third temperature threshold, the adjustment strategy is determined to be a third strategy, and the third strategy is used to reduce the operating frequency of the next working cycle when the next working cycle of the compressor begins.

[0120] In one possible implementation, when the adjustment strategy is the third strategy, when the compressor enters the next working cycle, the operating frequency is controlled to decrease to the third frequency;

[0121] Alternatively, when the compressor enters a next working cycle, if the difference between the second temperature and the third temperature threshold is greater than a first set value, the operating frequency is controlled to decrease to a fourth frequency, and the fourth frequency is less than the third frequency;

[0122] Alternatively, when the compressor enters the next working cycle, if the difference between the second temperature and the third temperature threshold is greater than the second set value, the operating frequency is controlled to be reduced to a fifth frequency, the fifth frequency is less than the fourth frequency, and the first set value is less than the second set value.

[0123] The methods disclosed in the above embodiments of the present invention can be applied to or implemented by processor 501. Processor 501 may be an integrated circuit chip with signal processing capabilities. During implementation, each step of the above method can be completed by hardware integrated logic circuits in processor 501 or by software instructions. The above processor 501 may be a general-purpose processor, a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field programmable gate array (FPGA), or other programmable logic devices, discrete gate or transistor logic devices, or discrete hardware components. The methods, steps, and logic block diagrams disclosed in the embodiments of the present invention can be implemented or executed. The general-purpose processor may be a microprocessor or any conventional processor. The steps of the methods disclosed in conjunction with the embodiments of the present invention can be directly implemented and executed by a hardware decoding processor, or by a combination of hardware and software units in the decoding processor. The software units can be located in storage media well-known in the art, such as random access memory, flash memory, read-only memory, programmable read-only memory, electrically erasable programmable memory, registers, etc. The storage medium is located in the memory 502 , and the processor 501 reads the information in the memory 502 and completes the steps of the above method in combination with its hardware.

[0124] It is understood that the embodiments described herein may be implemented using hardware, software, firmware, middleware, microcode, or a combination thereof. For hardware implementation, the processing unit may be implemented in one or more application-specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DSPDs), programmable logic devices (PLDs), field-programmable gate arrays (FPGAs), general-purpose processors, controllers, microcontrollers, microprocessors, other electronic units for performing the functions described herein, or a combination thereof.

[0125] For software implementation, the technology described herein can be implemented by a unit that performs the functions described herein. The software code can be stored in a memory and executed by a processor. The memory can be implemented in the processor or outside the processor.

[0126] The device provided in this embodiment can be Figure 5 The device shown in , can perform Figure 1-3 All steps of the method for controlling the frequency of the compressor are achieved Figure 1-3 For details on the technical effects of the compressor frequency control method shown, please refer to Figure 1-3 For the sake of brevity, the relevant description will not be repeated here.

[0127] An embodiment of the present invention further provides a storage medium (computer-readable storage medium). The storage medium stores one or more programs. The storage medium may include volatile memory, such as random access memory; the memory may also include non-volatile memory, such as read-only memory, flash memory, hard disk, or solid-state drive; and the memory may also include a combination of the aforementioned types of memory.

[0128] When one or more programs in the storage medium can be executed by one or more processors, the compressor frequency control method executed on the device side can be implemented.

[0129] The processor is configured to execute a compressor frequency control program stored in the memory to implement the following steps of a compressor frequency control method executed on the device side:

[0130] When the current first temperature of the device is greater than a first temperature threshold, controlling the compressor of the device to turn on;

[0131] Acquire a first operating time of the compressor, and acquire a second temperature of the device, where the second temperature represents a current temperature of the compressor after the compressor has operated for the first operating time;

[0132] determining an adjustment strategy for the operating frequency of the compressor according to the first operating time and the second temperature;

[0133] The operating frequency of the compressor is controlled according to the adjustment strategy.

[0134] In one possible implementation, when the device starts running, the compressor is turned on;

[0135] When the first temperature of the device is less than a second temperature threshold, controlling the compressor to shut down;

[0136] When a first temperature of the device is greater than or equal to a first temperature threshold, the compressor is controlled to start and operate at a target frequency, and the second temperature threshold is less than the first temperature threshold.

[0137] In a possible implementation, when the first operating time is greater than a first time threshold and the second temperature is greater than a third temperature threshold, the adjustment strategy is determined to be a first strategy for increasing the operating frequency.

[0138] In one possible embodiment, when the first operating time is greater than a first time threshold and the second temperature is less than or equal to the third temperature threshold, the adjustment strategy is determined to be a second strategy, and the second strategy is used to control the operating frequency of the next working cycle to be consistent with the operating frequency of the current working cycle when the next working cycle of the compressor begins.

[0139] In one possible implementation, when the adjustment strategy is the first strategy, the operating frequency is controlled to increase to a first frequency, where the first frequency is greater than the target frequency;

[0140] When the compressor operates at the first frequency for a second operating time and the second temperature is greater than the third temperature threshold, controlling the operating frequency to increase to a second frequency, the second operating time is less than the first operating time, and the second frequency is greater than the first frequency;

[0141] When the compressor operates at the second frequency for a third operating time and the second temperature is greater than the third temperature threshold, the operating frequency is controlled to increase to a maximum frequency, and the third operating time is less than the second operating time.

[0142] In one possible embodiment, when the first operating time is less than or equal to a first time threshold and the second temperature is less than or equal to a third temperature threshold, the adjustment strategy is determined to be a third strategy, and the third strategy is used to reduce the operating frequency of the next working cycle when the next working cycle of the compressor begins.

[0143] In one possible implementation, when the adjustment strategy is the third strategy, when the compressor enters the next working cycle, the operating frequency is controlled to decrease to the third frequency;

[0144] Alternatively, when the compressor enters a next working cycle, if the difference between the second temperature and the third temperature threshold is greater than a first set value, the operating frequency is controlled to decrease to a fourth frequency, and the fourth frequency is less than the third frequency;

[0145] Alternatively, when the compressor enters the next working cycle, if the difference between the second temperature and the third temperature threshold is greater than the second set value, the operating frequency is controlled to be reduced to a fifth frequency, the fifth frequency is less than the fourth frequency, and the first set value is less than the second set value.

[0146] Professionals should also be further aware that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, computer software, or a combination of the two. In order to clearly illustrate the interchangeability of hardware and software, the above description has generally described the components and steps of each example according to their functions. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professionals and technicians can use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of the present invention.

[0147] The steps of the methods or algorithms described in conjunction with the embodiments disclosed herein may be implemented using hardware, a software module executed by a processor, or a combination of the two. The software module may be placed in a random access memory (RAM), a memory, a read-only memory (ROM), an electrically programmable ROM, an electrically erasable programmable ROM, a register, a hard disk, a removable disk, a CD-ROM, or any other form of storage medium known in the art.

[0148] The specific implementation methods described above further illustrate the objectives, technical solutions and beneficial effects of the present invention in detail. It should be understood that the above description is only a specific implementation method of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A method for controlling the frequency of a compressor, characterized in that: include: When the current first temperature of the device is greater than a first temperature threshold, controlling the compressor of the device to turn on; Acquire a first operating time of the compressor, and acquire a second temperature of the device, where the second temperature represents a current temperature of the compressor after the compressor has operated for the first operating time; determining an adjustment strategy for the operating frequency of the compressor according to the first operating time and the second temperature; controlling the operating frequency of the compressor according to the adjustment strategy; The adjustment strategy for determining the operating frequency of the compressor according to the first operating time and the second temperature includes: When the first operating time is greater than a first time threshold and the second temperature is greater than a third temperature threshold, determining that the adjustment strategy is a first strategy, and the first strategy is used to increase the operating frequency; When the first operating time is greater than a first time threshold and the second temperature is less than or equal to the third temperature threshold, the adjustment strategy is determined to be a second strategy, and the second strategy is used to control the operating frequency of the next working cycle to be consistent with the operating frequency of the current working cycle when the next working cycle of the compressor begins.

2. The method according to claim 1, characterized in that When the first temperature of the device is greater than a first threshold, controlling the compressor of the device to start includes: When the device starts to operate, turning on the compressor; When the first temperature of the device is less than a second temperature threshold, controlling the compressor to shut down; When a first temperature of the device is greater than or equal to a first temperature threshold, the compressor is controlled to start and operate at a target frequency, and the second temperature threshold is less than the first temperature threshold.

3. The method according to claim 1, characterized in that The adjusting the operating frequency of the compressor according to the adjustment strategy includes: When the adjustment strategy is the first strategy, controlling the operating frequency to increase to a first frequency, the first frequency being greater than the target frequency; When the compressor operates at the first frequency for a second operating time and the second temperature is greater than the third temperature threshold, controlling the operating frequency to increase to a second frequency, the second operating time is less than the first operating time, and the second frequency is greater than the first frequency; When the compressor operates at the second frequency for a third operating time and the second temperature is greater than the third temperature threshold, the operating frequency is controlled to increase to a maximum frequency, and the third operating time is less than the second operating time.

4. The method according to claim 2, characterized in that The adjustment strategy for determining the operating frequency of the compressor according to the first operating time and the second temperature includes: When the first operating time is less than or equal to a first time threshold and the second temperature is less than or equal to a third temperature threshold, the adjustment strategy is determined to be a third strategy, and the third strategy is used to reduce the operating frequency of the next working cycle when the next working cycle of the compressor begins.

5. The method according to claim 4, characterized in that The adjusting the operating frequency of the compressor according to the adjustment strategy includes: When the adjustment strategy is the third strategy, when the compressor enters the next working cycle, controlling the operating frequency to decrease to the third frequency; Alternatively, when the compressor enters a next working cycle, if the difference between the second temperature and the third temperature threshold is greater than a first set value, the operating frequency is controlled to decrease to a fourth frequency, and the fourth frequency is less than the third frequency; Alternatively, when the compressor enters the next working cycle, if the difference between the second temperature and the third temperature threshold is greater than the second set value, the operating frequency is controlled to be reduced to a fifth frequency, the fifth frequency is less than the fourth frequency, and the first set value is less than the second set value.

6. A compressor frequency control device, characterized in that: include: a control module, configured to control a compressor of the device to start when a current first temperature of the device is greater than a first temperature threshold; an acquisition module, configured to acquire a first operating time of the compressor and a second temperature of the device, wherein the second temperature represents a current temperature of the compressor after the compressor has run for the first operating time; a determining module, configured to determine an adjustment strategy for the operating frequency of the compressor according to the first operating time and the second temperature; The control module is further configured to control the operating frequency of the compressor according to the adjustment strategy; The determining module is specifically configured to determine that the adjustment strategy is a first strategy for increasing the operating frequency when the first operating time is greater than a first time threshold and the second temperature is greater than a third temperature threshold; When the first operating time is greater than a first time threshold and the second temperature is less than or equal to the third temperature threshold, the adjustment strategy is determined to be a second strategy, and the second strategy is used to control the operating frequency of the next working cycle to be consistent with the operating frequency of the current working cycle when the next working cycle of the compressor begins.

7. A device, characterized in that include: A processor and a memory, wherein the processor is configured to execute a code generation program stored in the memory to implement the compressor frequency control method according to any one of claims 1 to 5.

8. A storage medium, characterized in that: The storage medium stores one or more programs, and the one or more programs can be executed by one or more processors to implement the compressor frequency control method according to any one of claims 1 to 5.

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