Frequency control method, storage medium, computer equipment and refrigeration equipment

Abstract

The present application discloses a frequency control method, storage medium, computer equipment and refrigeration equipment. The frequency limiting control method includes: obtaining a first target frequency indicating the operation of the compressor; collecting the electrical input parameters, operating power and ambient temperature of the compressor in real time, the ambient temperature being the ambient temperature in the compressor operation space; based on the electrical input parameters, operating power and ambient temperature, correcting the first target frequency to a second target frequency; and controlling the compressor to operate according to the second target frequency. In the above manner, the frequency control method provided by the present application can effectively improve the service life and reliability of the compressor.

Description

Technical Field

[0001] The present application relates to the technical field of compressor frequency limiting control, and in particular to a frequency control method, a storage medium, a computer device and a refrigeration device. Background Art

[0002] In the field of refrigerator technology, the electric control board is generally installed on the top and back of the refrigerator. Both locations will occupy the internal space or external space of the refrigerator. On the one hand, the refrigeration or freezing space is reduced, and on the other hand, there is a risk of condensation. Therefore, the electric control board is currently designed to be placed in the compressor compartment, and the frequency conversion board and the compressor are installed in an integrated structure. This can avoid the above problems, reduce the length of the power cord, and reduce costs.

[0003] However, after the electronic control board is put into the warehouse, it is relatively close to the compressor. The compressor is a heat source. The maximum heat is basically converted from electrical energy to mechanical energy. The mechanical energy is converted into thermal energy. The heat will be distributed in the compressor compartment, causing the ambient temperature of the frequency converter board to rise, affecting the ambient temperature of the entire compressor compartment. According to Arrhenius theory, the life of the electronic control components and compressor in the compressor compartment will be reduced after the temperature rises, and the reliability will also be greatly reduced. Summary of the invention

[0004] The present application mainly provides a frequency control method, a storage medium, a computer device and a refrigeration device to solve the problem of reduced product life and reliability caused by excessive temperature of control components and compressors in electrical equipment.

[0005] In order to solve the above technical problems, a technical solution adopted by the present application is: to provide a frequency control method for a compressor. The frequency control method includes: obtaining a first target frequency indicating the operation of the compressor; collecting the electrical input parameters, operating power and ambient temperature of the compressor in real time, wherein the ambient temperature is the ambient temperature in the operating space of the compressor; based on the electrical input parameters, the operating power and the ambient temperature, correcting the first target frequency to a second target frequency; and controlling the compressor to operate according to the second target frequency.

[0006] In order to solve the above technical problem, another technical solution adopted by the present application is to provide a storage medium having program data stored thereon, and the program data implements the steps of the above frequency control method when executed by a processor.

[0007] To solve the above technical problems, another technical solution adopted by the present application is to provide a computer device, which includes a processor and a memory connected to each other, the memory stores a computer program, and when the processor executes the computer program, the steps of the above frequency control method are implemented.

[0008] In order to solve the above technical problems, another technical solution adopted by the present application is to provide a refrigeration device, which includes a compressor for refrigeration and the above-mentioned computer device, wherein the computer device is communicatively connected with the compressor.

[0009] The beneficial effects of the present application are as follows: Different from the prior art, the present application discloses a frequency control method, storage medium, computer equipment and refrigeration equipment. By acquiring a first target frequency indicating the operation of the compressor, collecting the electrical input parameters, operating power and ambient temperature of the compressor in real time, and based on the electrical input parameters, operating power and ambient temperature, correcting the first target frequency to a second target frequency, and controlling the compressor to operate according to the second target frequency, the operating frequency of the compressor is optimized, and the risk of the instantaneous temperature of the compressor exceeding the standard due to changes in factors such as electrical input parameters, operating power and ambient temperature during the operation of the compressor is reduced, thereby effectively improving the service life and reliability of the compressor. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the prior art descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative work, among which:

[0011] Figure 1 It is a flow chart of an embodiment of a frequency control method provided by the present application;

[0012] Figure 2 yes Figure 1 Schematic diagram of the process of step 10;

[0013] Figure 3 yes Figure 1 Schematic diagram of the process of step 30;

[0014] Figure 4 yes Figure 3 Schematic diagram of the process of step 31;

[0015] Figure 5 yes Figure 3 Schematic diagram of the process of step 32;

[0016] Figure 6 yes Figure 3 Schematic diagram of the process of step 33;

[0017] Figure 7 This is the power operation diagram when the compressor is not equipped with a frequency control method;

[0018] Figure 8It is the power operation diagram when the compressor is equipped with a frequency control method;

[0019] Fig. 9 It is a structural schematic diagram of an embodiment of a storage medium provided by the present application;

[0020] Fig.10 It is a structural diagram of an embodiment of a network device provided by the present application. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0022] The terms "first", "second", "third" in the embodiments of the present application are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Thus, the features defined as "first", "second", "third" can expressly or implicitly include at least one of the features. In the description of the present application, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device comprising a series of steps or units is not limited to the listed steps or units, but optionally also includes steps or units that are not listed, or optionally also includes other steps or units inherent to these processes, methods, products or devices.

[0023] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0024] The present application provides a frequency control method for a compressor to limit a transient temperature index of the compressor and avoid the transient temperature exceeding the standard.

[0025] Once the transient temperature index of the compressor is exceeded during operation, the service life and reliability of the electrical equipment will be greatly reduced. Therefore, by increasing the frequency limiting protection for the compressor, it is ensured that the transient temperature of the compressor drops to meet the overall performance requirements of the electrical equipment, which is beneficial to improving the service life and reliability.

[0026] Specifically, see Figure 1 , a flow chart of an embodiment of a frequency control method provided by the present application. The frequency control method comprises:

[0027] Step 10: Obtain a first target frequency indicating the operation of the compressor.

[0028] The control device of the electrical equipment obtains a first target frequency indicating the operation of the compressor. Specifically, the first target frequency indicates the frequency to which the compressor will be adjusted to operate. For example, the first target frequency indicates that the operating frequency of the compressor gradually increases to the first target frequency, or a target frequency indicates that the operating frequency of the compressor gradually decreases to the first target frequency.

[0029] If the electrical equipment is currently in the startup state, the first target frequency assigns its control component an initial frequency indicating the operation of the compressor. The initial frequency can be a fixed frequency or a variable frequency determined based on various factors. If the electrical equipment is currently in the operation process after startup, the first target frequency is the variable frequency to which the compressor will be adjusted.

[0030] In this embodiment, in the startup state, the first target frequency is a variable frequency determined based on various environmental factors. Figure 2 The first target frequency indicating the operation of the compressor in step 10 can be obtained by the following steps, specifically including:

[0031] Step 11: Collect the real-time temperature in each chamber and the ambient temperature and humidity of the compressor

[0032] The real-time temperature in each chamber and the ambient temperature and humidity of the compressor are collected through sensors.

[0033] The electrical device is a refrigerator, and the compressor is a compressor, which cools each chamber in the refrigerator so that the real-time temperature of each chamber reaches a preset temperature.

[0034] The cabinet of the refrigerator may include multiple layers of storage space, for example, divided into a refrigerating chamber and a freezing chamber according to the storage temperature, or divided into a fresh-keeping chamber, a refrigerating chamber and a freezing chamber according to the storage temperature.

[0035] In this embodiment, the chamber of the refrigerator includes a refrigeration chamber and a freezer chamber; the real-time temperature in each chamber is collected, specifically including collecting the real-time temperature of the refrigeration chamber and the freezer chamber respectively; at the same time, the ambient temperature and humidity of the environment in which the compressor is located are also collected, so as to comprehensively consider the real-time temperature in each chamber and the ambient temperature and humidity of the environment in which the compressor is located to evaluate the first target frequency when the refrigerator is started.

[0036] Step 12: Calculate the first target frequency based on the difference between each real-time temperature and the corresponding preset temperature, the difference between the ambient temperature and the preset temperature, and the difference between the ambient humidity and the preset humidity.

[0037] In this embodiment, the first target frequency is calculated based on the difference between the real-time temperature of the refrigerator compartment and the corresponding preset temperature, the difference between the real-time temperature of the freezer compartment and the corresponding preset temperature, the difference between the ambient temperature and the preset temperature, and the difference between the ambient humidity and the preset humidity.

[0038] Specifically, each difference is positively correlated with the first target frequency, that is, the larger the difference, the larger the first target frequency, so as to accelerate the adjustment of the real-time temperature of the corresponding chamber to the preset temperature. The first target frequency is the sum of the difference between each real-time temperature and the corresponding preset temperature, the difference between the ambient temperature and the preset temperature, and the difference between the ambient humidity and the preset humidity, and the product of the corresponding temperature and humidity influencing factor coefficient.

[0039] Specifically: F1 = a×ΔT1+b×ΔT2+c×ΔT3+d×ΔH1.

[0040] Among them, F1 is the first target frequency, ΔT1 is the difference between the real-time temperature of the refrigerator and the corresponding preset temperature, ΔT2 is the difference between the real-time temperature of the freezer and the corresponding preset temperature, ΔT3 is the difference between the ambient temperature and the preset temperature, ΔH1 is the difference between the ambient humidity and the preset humidity, a, b, c and d are the corresponding temperature and humidity influencing factor coefficients, and a, b, c and d are determined by the hardware structure dimensions of the electrical equipment.

[0041] In the running state after the compressor is started, the second target frequency after the first target frequency is corrected is used as the new first target frequency and can be acquired in real time by the control device of the electrical equipment.

[0042] Step 20: Collect the electrical input parameters, operating power and ambient temperature of the compressor in real time.

[0043] The control device of the electrical equipment collects the electrical input parameters, operating power and ambient temperature of the compressor in real time. The electrical input parameters can be input voltage or input current, the operating power is the real-time operating power of the compressor, and the ambient temperature is the ambient temperature in the compressor operating space.

[0044] The increase of electrical input parameters, operating power and ambient temperature will cause the instantaneous temperature of the compressor and control components to increase, which may cause the instantaneous temperature to exceed the standard. Therefore, when these conditions change, the first target frequency needs to be corrected in time to avoid the instantaneous temperature exceeding the standard.

[0045] Specifically, the electrical input parameters, operating power and ambient temperature each have a corresponding target frequency limit, and their target frequency limits may be different. Therefore, changes in the electrical input parameters, operating power or ambient temperature will also cause the corresponding target frequency limits to change, making it impossible for the current first target frequency to simultaneously meet the target frequency limits corresponding to the electrical input parameters, operating power and ambient temperature respectively. Therefore, it is necessary to adjust the current first target frequency so that the corrected target frequency can simultaneously meet the target frequency limits corresponding to the electrical input parameters, operating power and ambient temperature respectively.

[0046] For example, at the current moment, the input voltage is 220V, the operating power is 280W, and the ambient temperature is 30 degrees Celsius, where the frequency limit corresponding to the input voltage is 150Hz, the frequency limit corresponding to the operating power of 280W is 180Hz, and the frequency limit corresponding to the ambient temperature of 30 degrees Celsius is 160Hz. The current first target frequency of the compressor is 145Hz; and at the next moment, the input voltage is 200V, the operating power and the ambient temperature remain unchanged, and the frequency limit corresponding to 200V is 135Hz. The first target frequency exceeds the frequency limit of the input voltage, then the first target frequency needs to be corrected so that the new first target frequency (second target frequency) simultaneously meets the target frequency limits corresponding to the electrical input parameters, operating power and ambient temperature, that is, the first target frequency needs to be corrected to not exceed 135Hz.

[0047] If not corrected, the compressor will overclock, causing the ambient temperature of the compressor and control components to change rapidly, which will in turn cause the transient temperature of the compressor and control components to exceed the standard and fail to meet the overall performance requirements of the electrical equipment. The increased temperature will greatly reduce the product life and reliability.

[0048] Step 30: Based on the electrical input parameters, the operating power and the ambient temperature, the first target frequency is corrected to be a second target frequency.

[0049] The control device corrects the first target frequency to the second target frequency based on the electrical input parameters, the operating power and the ambient temperature to avoid the instantaneous temperature exceeding the standard.

[0050] Optionally, the control device detects the electrical input parameters, operating power and ambient temperature in a time sequence cycle, and when any of them changes, corrects the first target frequency to the second target frequency accordingly; or, the control device detects the electrical input parameters, operating power and ambient temperature at the same time, and corrects the first target frequency to the second target frequency when any of the factors changes; wherein the second target frequency does not exceed the frequency limit values ​​corresponding to the electrical input parameters, operating power and ambient temperature.

[0051] Specifically, see Figure 3In step 30, based on the electrical input parameters, the operating power and the ambient temperature, the first target frequency is corrected to the second target frequency, which can be performed according to the following steps, specifically including:

[0052] Step 31: Obtain a first correction parameter corresponding to the electrical input parameter, wherein the electrical input parameter is divided into a plurality of electrical gears according to numerical values, and each electrical gear has a corresponding first correction parameter.

[0053] For example, if the electrical input parameter is input voltage, the input voltage can be divided into 3, 4, 5 or 6 electrical gears according to the numerical value in advance. Each electrical gear has a corresponding first correction coefficient, and the corresponding first correction coefficient is obtained according to the electrical gear corresponding to the collected input voltage.

[0054] For example, the input voltage is divided into 5 electrical gears according to the numerical value. The voltage ranges corresponding to the 5 electrical gears are less than 200V, 200V to 220V, 220V to 240V, 240V to 260V and greater than 260V. Each electrical gear corresponds to a different frequency limit. The smaller the voltage, the lower the corresponding frequency limit. The first correction coefficient is used to correct the first target frequency. The corrected target frequency is less than the frequency limit of the corresponding electrical gear.

[0055] Furthermore, the first correction coefficient can be further divided into a first correction coefficient corresponding to a frequency increase interval or a frequency reduction interval. When in the frequency increase interval, the real-time operating frequency of the compressor is gradually increasing, and its operating power is also increasing, and thus its transient temperature is also increasing, resulting in a greater possibility that its transient temperature exceeds the standard; while in the frequency reduction interval, the real-time operating frequency of the compressor is gradually decreasing, and its operating power is also decreasing, and thus its transient temperature rise rate is relatively small or even decreases, and thus the possibility that its transient temperature exceeds the standard is smaller; therefore, at the same electrical gear, the first correction coefficient corresponding to the frequency increase interval or the frequency reduction interval may be different, and when selecting the first correction coefficient, it is necessary to consider whether the operating frequency of the compressor belongs to the frequency increase interval or the frequency reduction interval.

[0056] By determining whether the operating frequency of the compressor belongs to the frequency increase range or the frequency decrease range, the first correction coefficient can be obtained more accurately, so that the second target frequency obtained after correction can be more consistent with the current actual operating condition of the electrical equipment.

[0057] Specifically, see Figure 4 , the first correction parameter corresponding to the electrical input parameter in step 31 can be obtained according to the following steps, specifically including:

[0058] Step 311: confirm that the operating frequency of the compressor is in the frequency increase range or the frequency decrease range.

[0059] If the current operating frequency of the compressor is less than or equal to the first target frequency, it can be determined that the operating frequency of the compressor is in the frequency increase range, and step 312 is executed; if the current operating frequency of the compressor is greater than the first target frequency, it can be determined that the operating frequency of the compressor is in the frequency reduction range, and step 313 is executed.

[0060] Step 312: Obtain a first correction parameter corresponding to the electrical input parameter and the frequency up-conversion interval.

[0061] Step 313: Obtain a first correction parameter corresponding to the electrical input parameter and the frequency reduction interval.

[0062] Step 32: Obtain a second correction parameter corresponding to the operating power, wherein the operating power is divided into a plurality of power levels according to numerical values, and each power level has a corresponding second correction parameter.

[0063] For example, the operating power is pre-divided into 3, 4, 5 or 6 power levels according to numerical values, each power level has a corresponding second correction coefficient, and the corresponding second correction coefficient is obtained according to the power level corresponding to the collected operating power.

[0064] For example, the operating power is divided into four power levels according to the numerical value. The power ranges corresponding to the four power levels are less than 180W, 180W to 220W, 220W to 260W, and 260W to 300W, respectively. Each power level has a different frequency limit. The second correction coefficient is used to correct the first target frequency. The corrected target frequency is less than the frequency limit of the corresponding power level.

[0065] Similarly, the second correction coefficient should also be divided into a second correction coefficient corresponding to the frequency increase interval or the frequency decrease interval. When in the frequency increase interval, the operating power of the compressor is increasing, and when in the frequency decrease interval, the operating power of the compressor is decreasing. Therefore, when corresponding to the same power level, the second correction coefficient corresponding to the frequency increase interval or the frequency decrease interval may also be different. When selecting the second correction coefficient, it is also necessary to consider whether the operating frequency of the compressor belongs to the frequency increase interval or the frequency decrease interval.

[0066] By determining whether the operating frequency of the compressor belongs to the frequency increase range or the frequency decrease range, the second correction coefficient can be obtained more accurately, so that the second target frequency obtained after correction can be more consistent with the current actual operating condition of the electrical equipment.

[0067] Specifically, see Figure 5 The step 32 of obtaining the second correction parameter corresponding to the operating power can be performed according to the following steps, specifically including:

[0068] Step 321: confirm that the operating frequency of the compressor is in the frequency increase range or the frequency decrease range.

[0069] If the current operating frequency of the compressor is less than or equal to the first target frequency, it can be determined that the operating frequency of the compressor is in the frequency increase range, and step 322 is executed; if the current operating frequency of the compressor is greater than the first target frequency, it can be determined that the operating frequency of the compressor is in the frequency reduction range, and step 323 is executed.

[0070] Step 322: Obtain a second correction parameter corresponding to the operating power and the frequency increase range.

[0071] Step 323: Obtain a second correction parameter corresponding to the operating power and the frequency reduction range.

[0072] Step 33: Obtain a third correction parameter corresponding to the ambient temperature, wherein the ambient temperature is divided into a plurality of temperature levels according to numerical values, and each temperature level has a corresponding third correction parameter.

[0073] For example, the ambient temperature is pre-divided into 3, 4, 5 or 6 temperature levels according to numerical values, each temperature level has a corresponding second correction coefficient, and the corresponding third correction coefficient is obtained according to the temperature level corresponding to the collected temperature power.

[0074] For example, the ambient temperature is divided into 6 temperature levels according to the numerical value. The temperature ranges corresponding to the 6 temperature levels are less than 16 degrees Celsius, 16 degrees Celsius to 20 degrees Celsius, 20 degrees Celsius to 24 degrees Celsius, 24 degrees Celsius to 28 degrees Celsius, 28 degrees Celsius to 32 degrees Celsius and 32 degrees Celsius. Each temperature level corresponds to a different frequency limit. The third correction coefficient is used to correct the first target frequency. The corrected target frequency is less than the frequency limit of the corresponding temperature level.

[0075] Similarly, the third correction coefficient should also be divided into a third correction coefficient corresponding to the frequency increase interval or the frequency decrease interval. When in the frequency increase interval, the operating power of the compressor is increasing, and its transient temperature is also increasing, causing the ambient temperature to rise as well, resulting in a greater possibility that its transient temperature exceeds the standard; when in the frequency decrease interval, the operating power of the compressor is decreasing, and thus its transient temperature rise rate is relatively small or even decreasing, and the ambient temperature growth is relatively slow or even decreasing, so the possibility that its transient temperature exceeds the standard is small; therefore, corresponding to the same temperature level, the third correction coefficient corresponding to the frequency increase interval or the frequency decrease interval may also be different, and when selecting the third correction coefficient, it is also necessary to consider whether the operating frequency of the compressor belongs to the frequency increase interval or the frequency decrease interval.

[0076] By determining whether the operating frequency of the compressor belongs to the frequency increase range or the frequency decrease range, the third correction coefficient can be obtained more accurately, so that the second target frequency obtained after correction can be more consistent with the current actual operating condition of the electrical equipment.

[0077] Specifically, see Figure 6The third correction parameter corresponding to the ambient temperature in step 33 can be obtained by following the steps below, specifically including:

[0078] Step 331: confirm that the operating frequency of the compressor is in the frequency increase range or the frequency decrease range.

[0079] If the current operating frequency of the compressor is less than or equal to the first target frequency, it can be determined that the operating frequency of the compressor is in the frequency increase range, and step 332 is executed; if the current operating frequency of the compressor is greater than the first target frequency, it can be determined that the operating frequency of the compressor is in the frequency reduction range, and step 333 is executed.

[0080] Step 332: Obtain a third correction parameter corresponding to the ambient temperature and the frequency increase range.

[0081] Step 333: Obtain a third correction parameter corresponding to the ambient temperature and the frequency reduction range.

[0082] Step 34: Calculate the second target frequency based on the first correction parameter, the second correction parameter, the third correction parameter and the first target frequency.

[0083] Specifically, the second target frequency is the product of the first target frequency and the first correction parameter, the second correction parameter and the third correction parameter.

[0084] Specifically: F2 = N1×N2×N3×F1.

[0085] Among them, F2 is the second target frequency, N1 is the first correction coefficient corresponding to the electrical input parameter, N2 is the second correction coefficient corresponding to the operating power, and N3 is the third correction coefficient corresponding to the ambient temperature.

[0086] If any of the electrical input parameters, operating power and ambient temperature exceeds the limit or the corresponding gear changes (for example, the corresponding electrical gear, power gear or temperature gear changes), the control device will correct the first target frequency to the second target frequency to avoid the instantaneous temperature of the compressor exceeding the limit and affecting the product life and reliability.

[0087] Step 40: Control the compressor to operate according to the second target frequency.

[0088] The control device outputs the corrected second target frequency to the compressor for execution. The second target frequency replaces the original first target frequency to perform frequency limiting control on the compressor. The second target frequency is then used as the new first target frequency, and the new first target frequency is again corrected based on the input electrical parameters, motion power and ambient temperature.

[0089] Among them, the control device can be a component inside the compressor, which can output the second target frequency to the execution component of the compressor for execution, and then the compressor can correct the first target frequency by itself after obtaining the first target frequency, electrical input parameters, operating power and ambient temperature, and execute according to the corrected second target frequency; or, the control device is an external device independent of the compressor, the compressor is the execution component, and the control device outputs the second target frequency to the compressor after generating it.

[0090] Furthermore, controlling the compressor to operate according to the second target frequency specifically includes: based on the second target frequency and a preset frequency increase and decrease rule, outputting the second target frequency and its corresponding frequency increase rate and frequency increase duration, or outputting the second target frequency and its corresponding frequency reduction rate and frequency reduction duration.

[0091] Specifically, based on the current operating frequency of the compressor, the second target frequency and the preset frequency increase and decrease rules, if the current operating frequency is less than the second target frequency, the second target frequency and the corresponding frequency increase rate and frequency increase duration are output; or if the current operating frequency is greater than the second target frequency, the second target frequency and the corresponding frequency reduction rate and frequency reduction duration are output to the compressor for execution, so as to avoid the compressor's operating frequency rising too fast during the frequency increase process and causing the instantaneous temperature to exceed the standard by limiting the frequency increase and decrease rules.

[0092] The value of the frequency increase rate is smaller than the value of the frequency decrease rate, so as to achieve a slow increase and fast decrease in the operating frequency, which can further reduce the risk of excessive instantaneous temperatures of the compressor and control components.

[0093] Furthermore, the frequency increase and decrease rules include multiple frequency platforms, operating time corresponding to the frequency platforms, and frequency increase rate and frequency decrease rate between adjacent frequency platforms, so as to avoid the instantaneous temperature exceeding the standard due to the compressor operating frequency increasing too quickly.

[0094] For example, in this embodiment, the frequency increase and decrease rules include 2, 3, 4 or 5 frequency platforms, and the operating frequency values ​​corresponding to each frequency platform increase in sequence. When the operating frequency of the compressor is increased across the frequency platform, it is necessary to maintain the corresponding operating time at each frequency platform passed before continuing to increase the frequency, so as to avoid instantaneous temperature exceeding the standard due to the operating frequency rising too fast in a short period of time.

[0095] If the second target frequency crosses at least one frequency platform relative to the first target frequency during frequency increase, the step of outputting the second target frequency and the corresponding frequency increase rate and frequency increase duration includes: outputting the second target frequency, frequency increase rate, frequency increase duration and the operating duration of the frequency platform. If the frequency is reduced, even if the frequency is reduced across the frequency platform, or the current operating frequency is at the frequency platform, it is not necessary to maintain the operating duration corresponding to the frequency platform operation, and it can immediately start to decrease to the target frequency at the frequency reduction rate, that is, the operating frequency is reduced more quickly, which can effectively reduce the risk of instantaneous temperature exceeding the standard.

[0096] See also Figure 7 and Figure 8 ,in Figure 7 This is the power operation diagram when the compressor is not equipped with a frequency control method. Figure 8 This is the power operation diagram when the compressor is equipped with a frequency control method.

[0097] In the above figure, the refrigerator's low-temperature operation time T1>T2, and the compressor's maximum operating power P2>P1.

[0098] The electrical appliance is a refrigerator, such as Figure 7 As shown in the figure, when the refrigerator is powered on for the first time and the temperature is lowered, the power rises sharply, causing the temperature of the electric control board and the compressor environment in the compressor compartment to change sharply. The temperature of the compressor itself and the temperature of the electric control components exceed the transient temperature standard, which cannot meet the overall performance requirements of the refrigerator. The temperature rises, and the product life and reliability are greatly reduced. Therefore, Figure 8 As shown, after the application adds frequency limiting protection, the low-temperature operation time T1>T2, the maximum operating power of the compressor P2>P1, which ensures that the operating power is reduced, the temperature of the compressor itself and the transient temperature of the electronic control components drop, meet the performance requirements of the whole machine, reduce the temperature rise, and the product life and reliability are also significantly improved.

[0099] See also Fig. 9 , Fig. 9 It is a structural diagram of an embodiment of the storage medium provided by the present application.

[0100] The storage medium 60 stores program data 61. When the program data 61 is executed by the processor, the following is achieved: Figures 1 to 6 The frequency control method described.

[0101] The program data 61 is stored in a storage medium 60, and includes a number of instructions for enabling a network device (such as a router, a personal computer, a server, or other network device) or a processor to execute all or part of the steps of the method described in each embodiment of the present application.

[0102] Optionally, the storage medium 60 may be a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, an optical disk, or other medium that can store the program data 61 .

[0103] See also Fig.10 , Fig.10 It is a structural schematic diagram of an embodiment of a computer device provided by the present application.

[0104] The computer device 70 includes a processor 72 and a memory 71 connected to each other. The memory 71 stores a computer program. When the processor 72 executes the computer program, the following is achieved: Figures 1 to 6 The frequency control method described.

[0105] Furthermore, the present application also provides a refrigeration device, which includes a compressor for refrigeration and the above-mentioned computer device 70, and the computer device is communicatively connected to the compressor. The refrigeration device can be a refrigerator, a freezer or an air conditioner, and the compressor can be a compressor therein.

[0106] Different from the prior art, the present application discloses a frequency control method, storage medium, computer equipment and refrigeration equipment. By acquiring a first target frequency indicating the operation of the compressor, collecting the electrical input parameters, operating power and ambient temperature of the compressor in real time, and based on the electrical input parameters, operating power and ambient temperature, correcting the first target frequency to a second target frequency, and controlling the compressor to operate according to the second target frequency, the operating frequency of the compressor is optimized, and the risk of the instantaneous temperature of the compressor exceeding the standard due to changes in factors such as electrical input parameters, operating power and ambient temperature during the operation of the compressor is reduced, thereby effectively improving the service life and reliability of the compressor.

[0107] Each embodiment in this specification is described in a progressive manner, and the same or similar parts between the embodiments can be referred to each other, and each embodiment focuses on the differences from other embodiments. In particular, for the storage medium embodiment and the electronic device embodiment, since they are basically similar to the method embodiment, the description is relatively simple, and the relevant parts can be referred to the partial description of the method embodiment.

[0108] The present application can be used in many general or special computing system environments or configurations, such as personal computers, server computers, handheld or portable devices, tablet devices, multiprocessor systems, microprocessor-based systems, set-top boxes, programmable consumer electronic devices, network PCs, minicomputers, mainframe computers, distributed computing environments including any of the above systems or devices, etc.

[0109] In the several embodiments provided in this application, it should be understood that the disclosed methods and devices can be implemented in other ways. For example, the device implementation described above is only illustrative, for example, the division of the modules or units is only a logical function division, and there may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed.

[0110] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the present embodiment.

[0111] In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above-mentioned integrated unit may be implemented in the form of hardware or in the form of software functional units.

[0112] The above descriptions are merely embodiments of the present application and are not intended to limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made using the contents of the present application specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A frequency control method for a compressor, characterized in that: The frequency control method comprises: acquiring a first target frequency indicating operation of the compressor; Collecting electrical input parameters, operating power and ambient temperature of the compressor in real time, wherein the ambient temperature is the ambient temperature in the operating space of the compressor; Based on the electrical input parameter, the operating power and the ambient temperature, correcting the first target frequency to a second target frequency; controlling the compressor to operate according to the second target frequency; The step of correcting the first target frequency to a second target frequency based on the electrical input parameter, the operating power and the ambient temperature includes: Acquire a first correction parameter corresponding to the electrical input parameter, wherein the electrical input parameter is divided into a plurality of electrical gears according to numerical values, and each electrical gear has a corresponding first correction parameter; Acquire a second correction parameter corresponding to the operating power, wherein the operating power is divided into a plurality of power levels according to numerical values, and each of the power levels has a corresponding second correction parameter; Acquire a third correction parameter corresponding to the ambient temperature, wherein the ambient temperature is divided into a plurality of temperature levels according to numerical values, and each temperature level has a corresponding third correction parameter; The second target frequency is calculated based on the first correction parameter, the second correction parameter, the third correction parameter and the first target frequency.

2. The frequency control method according to claim 1, characterized in that: Before acquiring the first correction parameter corresponding to the electrical input parameter, acquiring the second correction parameter corresponding to the operating power, and acquiring the third correction parameter corresponding to the ambient temperature, the method further includes: Confirming that the operating frequency of the compressor is in a frequency increase range or a frequency decrease range; If the operating frequency of the compressor is in the frequency-increasing interval, the first correction parameter corresponding to the electrical input parameter and the frequency-increasing interval is obtained, the second correction parameter corresponding to the operating power and the frequency-increasing interval is obtained, and the third correction parameter corresponding to the ambient temperature and the frequency-increasing interval is obtained; If the operating frequency of the compressor is in the frequency reduction range, the first correction parameter corresponding to the electrical input parameter and the frequency reduction range is obtained, the second correction parameter corresponding to the operating power and the frequency reduction range is obtained, and the third correction parameter corresponding to the ambient temperature and the frequency reduction range is obtained.

3. The frequency control method according to claim 1 or 2, characterized in that: The second target frequency is the product of the first target frequency, the first correction parameter, the second correction parameter, and the third correction parameter.

4. The frequency control method according to claim 1, characterized in that: The obtaining of a first target frequency indicating the operation of the compressor comprises: Collecting the real-time temperature in each chamber and collecting the ambient temperature and humidity of the compressor; wherein the chamber includes a refrigeration chamber and a freezing chamber; collecting the real-time temperature in each chamber includes: collecting the real-time temperature of the refrigeration chamber and the freezing chamber respectively; The first target frequency is calculated based on the difference between the real-time temperature and the corresponding preset temperature, the difference between the ambient temperature and the corresponding preset temperature, the difference between the ambient humidity and the preset humidity, and the corresponding temperature and humidity influencing factor coefficient: F1=a×ΔT1+b×ΔT2+c×ΔT3+d×ΔH1 Among them, F1 is the first target frequency, ΔT1 is the difference between the real-time temperature of the refrigeration chamber and the corresponding preset temperature, ΔT2 is the difference between the real-time temperature of the freezing chamber and the corresponding preset temperature, ΔT3 is the difference between the ambient temperature and the corresponding preset temperature, ΔH1 is the difference between the ambient humidity and the preset humidity, and a, b, c and d are the corresponding temperature and humidity influencing factor coefficients.

5. The frequency control method according to claim 1, characterized in that: The controlling the compressor to operate according to the second target frequency includes: Based on the second target frequency and the preset frequency increase and decrease rule, the second target frequency and the corresponding frequency increase rate and frequency increase duration are output, or the second target frequency and the corresponding frequency reduction rate and frequency reduction duration are output.

6. The frequency control method according to claim 5, characterized in that: The frequency increase and decrease rules include multiple frequency platforms, the operation durations corresponding to the frequency platforms, and the frequency increase rate and frequency decrease rate between adjacent frequency platforms; If the second target frequency crosses at least one of the frequency platforms relative to the first target frequency during frequency up-conversion, the outputting of the second target frequency and the frequency up-conversion rate and frequency up-conversion duration corresponding thereto includes: The second target frequency, the frequency increase rate, the frequency increase duration, and the operating duration of the frequency platform are output.

7. A storage medium having program data stored thereon, characterized in that: When the program data is executed by a processor, the steps of the frequency control method according to any one of claims 1 to 6 are implemented.

8. A computer device, characterized in that: The method comprises a processor and a memory connected to each other, wherein the memory stores a computer program, and when the processor executes the computer program, the steps of the frequency control method according to any one of claims 1 to 6 are implemented.

9. A refrigeration device, characterized in that: The refrigeration device comprises a compressor for refrigeration and a computer device as claimed in claim 8, wherein the computer device is communicatively connected to the compressor.

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