CN114962234A - Frequency control method, storage medium, computer device and refrigeration device - Google Patents
Frequency control method, storage medium, computer device and refrigeration device Download PDFInfo
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- 230000003247 decreasing effect Effects 0.000 claims description 10
- 230000008014 freezing Effects 0.000 claims description 8
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
- F04B49/06—Control using electricity
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B2207/00—External parameters
- F04B2207/03—External temperature
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B40/00—Technologies aiming at improving the efficiency of home appliances, e.g. induction cooking or efficient technologies for refrigerators, freezers or dish washers
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Abstract
The application discloses a frequency control method, a storage medium, a computer device and a refrigeration device. The frequency limiting control method comprises the following steps: acquiring a first target frequency indicating operation of a compressor; collecting electrical input parameters, operating power and ring temperature of a compressor in real time, wherein the ring temperature is the ambient temperature in the operating space of the compressor; based on the electrical input parameters, the operating power and the ring temperature, correcting the first target frequency to be a second target frequency; the compressor is controlled to operate at a second target frequency. Through the mode, the frequency control method provided by the application can effectively improve the service life and reliability of the compressor.
Description
Technical Field
The application relates to the technical field of frequency limiting control of compressors, in particular to a frequency control method, a storage medium, computer equipment and refrigeration equipment.
Background
In the technical field of refrigerators, an electric control board is generally installed at the top and the back of a refrigerator, and the two positions can occupy the internal space or the external space of the refrigerator, so that the refrigerating or freezing space is reduced on one hand, and the condensation risk is generated on the other hand. Therefore, the existing electric control board is designed to be placed in a press bin, and the frequency conversion board and the compressor are of an integrated mounting structure, so that the problems can be avoided, the length of a power line can be reduced, and the cost is reduced.
However, automatically controlled board advances the storehouse and is relatively nearer with the compressor, and the compressor is the heat-generating body, and the biggest heat is mechanical energy from the electric energy dress change into basically, and mechanical energy converts heat energy into, and the heat can distribute in the press storehouse, leads to the ambient temperature of frequency conversion board to rise, influences whole compressor storehouse ambient temperature. According to the Arrhenius theory, after the temperature rises, the service lives of an electric control device and a compressor in the press cabin are reduced, and the reliability is greatly reduced.
Disclosure of Invention
The application mainly provides a frequency control method, a storage medium, computer equipment and refrigeration equipment, and aims to solve the problems that the service life and the reliability of products are reduced due to the fact that temperature exceeds standard of control devices, compressors and the like in electrical equipment.
In order to solve the technical problem, the application adopts a technical scheme that: a frequency control method of a compressor is provided. The frequency control method comprises the following steps: obtaining a first target frequency indicative of operation of the compressor; acquiring electrical input parameters, operating power and a ring temperature of the compressor in real time, wherein the ring temperature is the ambient temperature in the operating space of the compressor; based on the electrical input parameters, the operating power and the ring temperature, correcting the first target frequency to be a second target frequency; the compressor is controlled to operate at a second target frequency.
In order to solve the above technical problem, another technical solution adopted by the present application is: a storage medium is provided. The storage medium has stored thereon program data which, when executed by a processor, implements the steps of the frequency control method as described above.
In order to solve the above technical problem, the present application adopts another technical solution: a computer device is provided. The computer device comprises a processor and a memory connected with each other, the memory stores a computer program, and the processor realizes the steps of the frequency control method when executing the computer program.
In order to solve the above technical problem, the present application adopts another technical solution: a refrigeration apparatus is provided. The refrigeration device comprises a compressor for refrigeration and a computer device as described above, the computer device being in communication with the compressor.
The beneficial effect of this application is: in contrast to the state of the art, the present application discloses a frequency control method, a storage medium, a computer device and a refrigeration device. The method comprises the steps of acquiring a first target frequency for indicating the operation of a compressor, acquiring electrical input parameters, operation power and ring temperature of the compressor in real time, correcting the first target frequency to be a second target frequency based on the electrical input parameters, the operation power and the ring temperature, and controlling the compressor to operate according to the second target frequency, so that the risk that the instantaneous temperature of the compressor exceeds the standard due to the change of the electrical input parameters, the operation power, the ring temperature and other factors in the operation process of the compressor is reduced by optimizing the operation frequency of the compressor, and the service life and the reliability of the compressor and the like can be effectively improved.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative efforts, wherein:
fig. 1 is a schematic flow chart diagram illustrating a frequency control method according to an embodiment of the present disclosure;
FIG. 2 is a schematic flow chart of step 10 of FIG. 1;
FIG. 3 is a schematic flow chart of step 30 of FIG. 1;
FIG. 4 is a schematic flow chart of step 31 in FIG. 3;
FIG. 5 is a schematic flow chart of step 32 of FIG. 3;
FIG. 6 is a schematic flow chart of step 33 in FIG. 3;
FIG. 7 is a power operation diagram for a compressor without a frequency control method;
FIG. 8 is a power operation diagram of a compressor provided with a frequency control method;
FIG. 9 is a schematic structural diagram of an embodiment of a storage medium provided in the present application;
fig. 10 is a schematic structural diagram of an embodiment of a network device provided in the present application.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
The terms "first", "second" and "third" in the embodiments of the present application are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or to imply that the number of indicated technical features is significant. Thus, a feature defined as "first," "second," or "third" may explicitly or implicitly include at least one of the feature. In the description of the present application, "plurality" means at least two, e.g., two, three, etc., unless explicitly specifically limited otherwise. Furthermore, the terms "include" and "have," as well as any variations thereof, are intended to cover non-exclusive inclusions. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those steps or elements listed, but may alternatively include other steps or elements not listed, or inherent to such process, method, article, or apparatus.
Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is explicitly and implicitly understood by one skilled in the art that the embodiments described herein can be combined with other embodiments.
The application provides a frequency control method of a compressor, which aims to limit the transient temperature index of the compressor and avoid the exceeding of the transient temperature.
In case in the operation process, the transient temperature index of the compressor greatly reduces the service life and reliability of the electrical equipment, and further ensures the transient temperature reduction of the compressor and the like by increasing the frequency limiting protection of the compressor so as to meet the performance requirement of the whole electrical equipment and be beneficial to improving the service life and reliability.
Specifically, referring to fig. 1, a flow chart of an embodiment of a frequency control method provided in the present application is schematically illustrated. The frequency control method comprises the following steps:
step 10: a first target frequency indicative of operation of the compressor is obtained.
The control means of the electrical appliance obtains a first target frequency indicating the operation of the compressor, in particular, the first target frequency is a frequency indicating the operation of the compressor to be adjusted, for example, the first target frequency indicates that the operation frequency of the compressor gradually increases to the first target frequency, or a target frequency indicates that the operation frequency of the compressor gradually decreases to the first target frequency.
If the electrical equipment is in a starting state at the current moment, the first target frequency gives an initial frequency for indicating the operation of the compressor to the control device, and the initial frequency can be a fixed frequency or a variable frequency determined based on various factors; if the electrical equipment is in the operation process after being started at the current moment, the first target frequency is a variable frequency indicating that the compressor is adjusted to operate.
In this embodiment, in the start-up state, the first target frequency is a variable frequency determined based on each environmental factor. Specifically, referring to fig. 2, the step 10 of obtaining the first target frequency indicating the operation of the compressor may be performed as follows, specifically including:
step 11: collecting real-time temperature in each chamber and collecting ambient temperature and humidity of the compressor
Real-time temperature in each corresponding cavity and the environment temperature and the environment humidity of the compressor are acquired through the sensors.
The electrical equipment is a refrigerator, the compressor is a compressor, and the compressor refrigerates each chamber in the refrigerator, so that the real-time temperature of each chamber reaches the preset temperature.
The cabinet of the refrigerator may include a multi-layered storage space, for example, a refrigerating compartment and a freezing compartment according to storage temperature, or a refreshing compartment, a refrigerating compartment and a freezing compartment according to storage temperature.
In this embodiment, the chamber of the refrigerator includes a refrigerating chamber and a freezing chamber; acquiring real-time temperature in each cavity, specifically comprising acquiring real-time temperature of a refrigerating cavity and a freezing cavity respectively; meanwhile, the environment temperature and the environment humidity of the environment where the compressor is located are collected, and the first target frequency of the refrigerator during starting is evaluated by comprehensively considering factors such as the real-time temperature in each cavity, the environment temperature and the environment humidity of the environment where the compressor is located and the like.
Step 12: and calculating to obtain a first target frequency based on the difference value between each real-time temperature and the corresponding preset temperature, the difference value between the ambient temperature and the preset temperature, and the difference value between the environmental humidity and the preset humidity.
In this embodiment, the first target frequency is calculated based on a difference between a real-time temperature of the refrigerating chamber and a corresponding preset temperature, a difference between a real-time temperature of the freezing chamber and a corresponding preset temperature, and a difference between an ambient temperature and a preset temperature, and a difference between an ambient humidity and a preset humidity.
Specifically, each difference is in positive correlation with the first target frequency, that is, the larger the difference is, the larger the first target frequency is, so as to accelerate the real-time temperature adjustment 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 product of the difference between the ambient humidity and the preset humidity and the corresponding temperature and humidity influence factor coefficient.
The method specifically comprises the following steps: f 1 ＝a×ΔT 1 +b×ΔT 2 +c×ΔT 3 +d×ΔH 1 。
Wherein, F 1 Is a first target frequency, Δ T 1 Is the difference, Δ T, between the real-time temperature of the refrigerated compartment and the corresponding preset temperature 2 Is the difference between the real-time temperature of the freezer compartment and the corresponding pre-set temperature, Δ T 3 Is the difference between the ambient temperature and the predetermined temperature, Δ H 1 The difference value of the environmental humidity and the preset humidity is obtained, a, b, c and d are corresponding temperature and humidity influence factor coefficients, and a, b, c and d are determined by the sizes of hardware structures of the electrical equipment.
And in the running state after the compressor is started, the second target frequency after the first target frequency is corrected is used as a new first target frequency and can be acquired by a control device of the electrical equipment in real time.
Step 20: and acquiring the electrical input parameters, the running power and the ring temperature of the compressor in real time.
The control device of the electrical equipment acquires the electrical input parameter, the operating power and the ring temperature of the compressor in real time, wherein the electrical input parameter can be input voltage or input current, the operating power is the real-time operating power of the compressor, and the ring temperature is the ambient temperature in the operating space of the compressor.
The increase of the electrical input parameters, the increase of the operating power and the increase of the ring temperature all can cause the instantaneous temperature of the compressor and the control device to increase, and the instantaneous temperature possibly exceeds the standard, so that the first target frequency needs to be corrected in time when the conditions are changed so as to avoid the instantaneous temperature exceeding the standard.
Specifically, the electrical input parameter, the operating power, and the ambient temperature respectively correspond to target frequency limit values, and the target frequency limit values may be different from each other, so that a change in the electrical input parameter, the operating power, or the ambient temperature also causes a change in the corresponding target frequency limit value, so that the current first target frequency cannot simultaneously satisfy the target frequency limit values corresponding to the electrical input parameter, the operating power, and the ambient temperature, respectively, and therefore the current first target frequency needs to be adjusted, so that the corrected target frequency can simultaneously satisfy the target frequency limit values corresponding to the electrical input parameter, the operating power, and the ambient temperature, respectively.
For example, at the current moment, the input voltage is 220V, the operating power is 280W, the ring temperature is 30 degrees celsius, wherein the frequency limit value corresponding to the input voltage is 150Hz, the frequency limit value corresponding to the operating power is 280W is 180Hz, the frequency limit value corresponding to the ring temperature is 30 degrees celsius is 160Hz, and the current first target frequency of the compressor is 145 Hz; and at the next moment, the input voltage is 200V, the operating power and the ring temperature are kept unchanged, the frequency limit value corresponding to 200V is 135Hz, and the first target frequency exceeds the frequency limit value of the input voltage, so that the first target frequency needs to be corrected, so that the new first target frequency (the second target frequency) simultaneously meets the target frequency limit values respectively corresponding to the electrical input parameter, the operating power and the ring temperature, that is, the first target frequency needs to be corrected to be not more than 135 Hz.
If the temperature of the compressor is not corrected, the compressor can operate in an overclocking mode, the temperature of the environment such as the compressor and a control device is changed rapidly, the transient temperature of the compressor and the control device exceeds the standard, the performance requirement of the whole electrical equipment cannot be met, and the service life and the reliability of the product are greatly reduced due to the temperature rise.
Step 30: and correcting the first target frequency to be a second target frequency based on the electrical input parameters, the operating power and the ring temperature.
The control device corrects the first target frequency to a second target frequency based on the electrical input parameters, the operating power and the loop temperature so as to avoid the instantaneous temperature exceeding the standard.
Optionally, the control device detects the electrical input parameters, the operating power and the loop temperature in a time sequence cycle, and correspondingly corrects the first target frequency to be a second target frequency when the electrical input parameters, the operating power and the loop temperature change; or the control device simultaneously detects the electrical input parameters, the operating power and the loop temperature, and corrects the first target frequency into a second target frequency after any factor is changed; wherein the second target frequency does not exceed frequency limits corresponding to the electrical input parameter, the operating power, and the loop temperature.
Specifically, referring to fig. 3, the step 30 of correcting the first target frequency to the second target frequency based on the electrical input parameter, the operating power and the loop temperature may be performed as follows, specifically including:
step 31: and acquiring 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 the numerical value, and each electrical gear is provided with the corresponding first correction parameter.
For example, if the electrical input parameter is an input voltage, the input voltage may be divided into 3, 4, 5, or 6 electrical gears according to the value, 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 acquired input voltage.
For example, the input voltage is divided into 5 electrical gears according to the value, voltage intervals corresponding to the 5 electrical gears are respectively less than 200V, 200V to 220V, 220V to 240V, 240V to 260V and more than 260V, each electrical gear corresponds to different frequency limit values, the smaller the voltage is, the lower the corresponding frequency limit value is, the first correction coefficient is used for correcting the first target frequency, and the corrected target frequency is smaller than the frequency limit value of the corresponding electrical gear.
Furthermore, the first correction coefficient can be further divided into first correction coefficients corresponding to an ascending frequency interval or a descending frequency interval, when the first correction coefficient is in the ascending frequency interval, the real-time operation frequency of the compressor is gradually increased, the operation power of the compressor is also increased, and further the transient temperature of the compressor is also increased, so that the possibility that the transient temperature exceeds the standard is high; when the compressor is in the frequency reduction interval, the real-time operation frequency of the compressor is gradually reduced, the operation power of the compressor is also reduced, and the transient temperature rising rate is relatively smaller or even reduced, so that the possibility that the transient temperature exceeds the standard is lower; therefore, the first correction coefficients corresponding to the ascending frequency interval or the descending frequency interval can be different in the same electrical gear, and whether the operating frequency of the compressor belongs to the ascending frequency interval or the descending frequency interval needs to be considered when the first correction coefficients are selected.
The first correction coefficient is obtained more accurately by judging whether the operating frequency of the compressor belongs to the frequency increasing interval or the frequency decreasing interval, so that the second target frequency obtained after correction can better accord with the current actual operating condition of the electrical equipment.
Specifically, referring to fig. 4, the obtaining of the first correction parameter corresponding to the electrical input parameter in step 31 may be performed as follows, specifically including:
step 311: and confirming that the running frequency of the compressor is in an ascending frequency interval or a descending frequency interval.
If the current operating frequency of the compressor is less than or equal to the first target frequency, it may be determined that the operating frequency of the compressor is in the up-conversion interval, and step 312 is performed; if the current operating frequency of the compressor is greater than the first target frequency, it may be determined that the operating frequency of the compressor is in the down-conversion interval, and step 313 is performed.
Step 312: and acquiring a first correction parameter corresponding to the electrical input parameter and the frequency increasing interval.
Step 313: and acquiring a first correction parameter corresponding to the electrical input parameter and the frequency reduction interval.
Step 32: and acquiring a second correction parameter corresponding to the operating power, wherein the operating power is divided into a plurality of power gears according to the numerical value, and each power gear is provided with the corresponding second correction parameter.
For example, the operating power is divided into 3, 4, 5, or 6 power gears according to the value, each power gear has a corresponding second correction coefficient, and the corresponding second correction coefficient is obtained according to the power gear corresponding to the acquired operating power.
For example, the operating power is divided into 4 power gears according to the magnitude, the power intervals corresponding to the 4 power gears are respectively less than 180W, 180W to 220W, 220W to 260W and 260W to 300W, each power gear corresponds to different frequency limits, the second correction coefficient is used for correcting the first target frequency, and the corrected target frequency is less than the frequency limit of the corresponding power gear.
Similarly, the second correction coefficient should be divided into the second correction coefficients corresponding to the ascending frequency interval or the descending frequency interval, when the second correction coefficient is in the ascending frequency interval, the operating power of the compressor is increasing, when the second correction coefficient is in the descending frequency interval, the operating power of the compressor is decreasing, therefore, when the second correction coefficient corresponds to the same power gear, the second correction coefficient corresponding to the ascending frequency interval or the descending frequency interval may also be different, and when the second correction coefficient is selected, whether the operating frequency of the compressor belongs to the ascending frequency interval or the descending frequency interval also needs to be considered.
The second correction coefficient is obtained more accurately by judging whether the operating frequency of the compressor belongs to the frequency increasing interval or the frequency reducing interval, so that the second target frequency obtained after correction can better accord with the current actual operating condition of the electrical equipment.
Specifically, referring to fig. 5, the obtaining of the second correction parameter corresponding to the operating power in step 32 may be performed as follows, specifically including:
step 321: and confirming that the running frequency of the compressor is in an ascending frequency interval or a descending frequency interval.
If the current operating frequency of the compressor is less than or equal to the first target frequency, it may be determined that the operating frequency of the compressor is in the up-conversion interval, and step 322 is performed; if the current operating frequency of the compressor is greater than the first target frequency, it may be determined that the operating frequency of the compressor is in the down-conversion interval, and step 323 is performed.
Step 322: and acquiring a second correction parameter corresponding to the operating power and the frequency boosting interval.
Step 323: and acquiring a second correction parameter corresponding to the operating power and the frequency reduction interval.
Step 33: and acquiring a third correction parameter corresponding to the environment temperature, wherein the environment temperature is divided into a plurality of temperature gears according to the value, and each temperature gear is provided with the corresponding third correction parameter.
For example, the ring temperature is divided into 3, 4, 5 or 6 temperature gears according to the value, each temperature gear has a corresponding second correction coefficient, and a corresponding third correction coefficient is obtained according to the temperature gear corresponding to the acquired temperature power.
For example, the ring temperature is divided into 6 temperature gears according to the numerical value, the temperature ranges corresponding to the 6 temperature gears are respectively less than 16 degrees centigrade, 16 degrees centigrade to 20 degrees centigrade, 20 degrees centigrade to 24 degrees centigrade, 24 degrees centigrade to 28 degrees centigrade, 28 degrees centigrade to 32 degrees centigrade and 32 degrees centigrade, each temperature gear corresponds to different frequency limit values, the third correction coefficient is used for correcting the first target frequency, and the corrected target frequency is less than the frequency limit value of the corresponding temperature gear.
Similarly, the third correction coefficient is divided into the third correction coefficient corresponding to the up-conversion interval or the down-conversion interval, when the compressor is in the up-conversion interval, the running power of the compressor is increased, the transient temperature of the compressor is also increased, so that the ring temperature is increased along with the increase of the running power of the compressor, and the possibility that the transient temperature exceeds the standard is high; when the temperature is in the frequency reduction interval, the running power of the compressor is reduced, the transient temperature rising rate is relatively small or even reduced, the ring temperature is relatively slowly increased or even reduced, and the possibility that the transient temperature exceeds the standard is low; therefore, the third correction coefficients corresponding to the ascending frequency interval or the descending frequency interval may be different when corresponding to the same temperature gear, and whether the operating frequency of the compressor belongs to the ascending frequency interval or the descending frequency interval needs to be considered when selecting the third correction coefficient.
The third correction coefficient is obtained more accurately by judging whether the operating frequency of the compressor belongs to the frequency increasing interval or the frequency reducing interval, so that the second target frequency obtained after correction can better accord with the current actual operating condition of the electrical equipment.
Specifically, referring to fig. 6, the step 33 of obtaining the third correction parameter corresponding to the ambient temperature may be performed as follows:
step 331: and confirming that the running frequency of the compressor is in an ascending frequency interval or a descending frequency interval.
If the current operating frequency of the compressor is less than or equal to the first target frequency, it may be determined that the operating frequency of the compressor is in the up-conversion interval, and step 332 is performed; if the current operating frequency of the compressor is greater than the first target frequency, it may be determined that the operating frequency of the compressor is in the down-conversion interval, and step 333 is performed.
Step 332: and acquiring a third correction parameter corresponding to the ring temperature and the frequency rising interval.
Step 333: and acquiring a third correction parameter corresponding to the environment temperature and the frequency reduction interval.
Step 34: and calculating to obtain a second target frequency based on the first correction parameter, the second correction parameter, the third correction parameter and the first target frequency.
Specifically, the second target frequency is a product of the first target frequency and the first correction parameter, the second correction parameter, and the third correction parameter.
The method comprises the following specific steps: f 2 ＝N 1 ×N 2 ×N 3 ×F 1 。
Wherein, F 2 Is a second target frequency, N 1 For a first correction factor, N, corresponding to an electrical input parameter 2 Is a second correction factor, N, corresponding to the operating power 3 Is a third correction coefficient corresponding to the ring temperature.
When any one of the electrical input parameter, the operating power and the ambient temperature exceeds the limit value or the corresponding gear changes (for example, the corresponding electrical gear, the power gear or the temperature gear changes), the control device corrects the first target frequency to be the second target frequency so as to avoid the influence on the service life and the reliability of the product caused by the fact that the instantaneous temperature of the compressor exceeds the standard.
Step 40: the compressor is controlled to operate at a second target frequency.
And the control device outputs the corrected second target frequency as the compressor to execute, the second target frequency replaces the original first target frequency to carry out frequency limiting control on the compressor, and then the second target frequency is used as a new first target frequency which is corrected again based on the input electrical parameters, the motion power and the environment temperature.
The control device can be a component in the compressor, and can output a second target frequency to an execution component of the compressor for execution, so that the compressor can automatically correct the first target frequency after acquiring the first target frequency, the electrical input parameter, the operating power and the ambient temperature, and execute the operation according to the corrected second target frequency; or the control device is an external device independent from the compressor, the compressor is an executive device, and the control device generates the second target frequency and outputs the second target frequency to the compressor.
Further, controlling the compressor to operate according to a second target frequency specifically includes: and outputting the second target frequency and the corresponding frequency increasing rate and frequency increasing duration or outputting the second target frequency and the corresponding frequency decreasing rate and frequency decreasing duration based on the second target frequency and a preset frequency increasing and decreasing rule.
Specifically, based on the current operating frequency of the compressor, a second target frequency and a preset frequency ascending and descending rule, if the current operating frequency is less than the second target frequency, outputting the second target frequency, and a frequency ascending rate and a frequency ascending duration corresponding to the second target frequency; or if the current operating frequency is greater than the second target frequency, outputting the second target frequency and the corresponding frequency reduction rate and frequency reduction duration to the compressor for execution, so as to avoid the phenomenon that the instantaneous temperature exceeds the standard due to the fact that the operating frequency of the compressor rises too fast in the frequency increasing process by limiting the frequency increasing and decreasing rule.
The numerical value of the frequency increasing rate is smaller than the numerical value of the frequency reducing rate, so that the running frequency is slowly increased and rapidly decreased, and the risk that the instantaneous temperature of a compressor, a control device and the like exceeds the standard can be further reduced.
Further, the frequency raising and lowering rule comprises a plurality of frequency platforms, running time corresponding to the frequency platforms, and raising and lowering rates between adjacent frequency platforms, so that the phenomenon that the instantaneous temperature exceeds the standard due to the fact that the running frequency of the compressor rises too fast is avoided.
For example, in this embodiment, the frequency ascending and descending rule includes 2, 3, 4, or 5 frequency platforms, the operating frequency values corresponding to the frequency platforms sequentially increase, and when the operating frequency of the compressor crosses the frequency platforms, the frequency ascending needs to be continued for an operating time corresponding to the operation of each passing frequency platform when the frequency ascending is performed, so as to avoid the instantaneous temperature exceeding caused by the too fast rising of the operating frequency in a short time.
If the second target frequency crosses at least one frequency platform relative to the first target frequency during frequency raising, the step of outputting the second target frequency and the frequency raising rate and the frequency raising duration corresponding to the second target frequency comprises the following steps: and outputting the second target frequency, the frequency raising rate, the frequency raising duration and the running duration of the frequency platform. If the frequency is reduced, even if the cross-frequency platform is reduced or the current operating frequency is in the frequency platform, the corresponding operating time length of the frequency platform is not required to be kept, the frequency can be reduced to the target frequency at the frequency reduction rate immediately, namely the operating frequency is reduced more quickly, and the risk that the instantaneous temperature exceeds the standard can be effectively reduced.
Referring to fig. 7 and 8, fig. 7 is a power operation diagram when the compressor is not provided with the frequency control method, and fig. 8 is a power operation diagram when the compressor is provided with the frequency control method.
In the upper figure, the refrigerator temperature-lowering time operation time T1 is more than T2, and the maximum operation power P2 is more than P1.
The electrical equipment is a refrigerator, as shown in fig. 7, in the process of drawing low temperature when the refrigerator is electrified for the first time, the power rises sharply, so that the environmental temperature of an electric control board and a compressor in a press bin changes sharply, the temperature of the compressor and the temperature of an electric control part are over-standard in a transient state, the requirement on the performance of the whole refrigerator cannot be met, the temperature is raised, and the service life and the reliability of the product are greatly reduced. Therefore, as shown in fig. 8, after the frequency limiting protection is added, the low-temperature time operation time T1 is greater than T2, and the maximum operation power P2 is greater than P1, so that the operation power is reduced, the temperature of the compressor and the temperature of the electric control component are reduced in a transient state, the performance requirement of the whole machine is met, the temperature rise is reduced, and the service life and the reliability of the product are obviously improved.
Referring to fig. 9, fig. 9 is a schematic structural diagram of an embodiment of a storage medium provided in the present application.
The storage medium 60 stores program data 61, and the program data 61 implements the frequency control method as described in fig. 1 to 6 when executed by the processor.
The program data 61 is stored in a storage medium 60 and includes instructions for causing a network device (which may be a router, a personal computer, a server, etc.) or a processor to perform all or part of the steps of the methods described in the various embodiments of the present application.
Alternatively, the storage medium 60 may be various media that can store the program data 61, such as a usb disk, a removable hard disk, a Read Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk.
Referring to fig. 10, fig. 10 is a schematic structural diagram of an embodiment of a computer device provided in the present application.
The computer device 70 comprises a processor 72 and a memory 71 connected, the memory 71 storing a computer program, the processor 72, when executing the computer program, implementing the frequency control method as described in fig. 1 to 6.
Further, the present application also provides a refrigeration device comprising a compressor for refrigeration and a computer device 70 as described above, the computer device being in communication with the compressor. Wherein the refrigeration equipment can be a refrigerator, an ice chest, an air conditioner or the like, and the compressor can be a compressor therein.
In contrast to the state of the art, the present application discloses a frequency control method, a storage medium, a computer device and a refrigeration device. The method comprises the steps of acquiring a first target frequency for indicating the operation of a compressor, acquiring electrical input parameters, operation power and ring temperature of the compressor in real time, correcting the first target frequency to be a second target frequency based on the electrical input parameters, the operation power and the ring temperature, and controlling the compressor to operate according to the second target frequency, so that the risk that the instantaneous temperature of the compressor exceeds the standard due to the change of the electrical input parameters, the operation power, the ring temperature and other factors in the operation process of the compressor is reduced by optimizing the operation frequency of the compressor, and the service life and the reliability of the compressor and the like can be effectively improved.
The embodiments in the present specification are described in a progressive manner, and the same and similar parts among the embodiments are referred to each other, and each embodiment focuses on the differences from the other embodiments. In particular, as for the storage medium embodiment and the electronic device embodiment, since they are substantially similar to the method embodiment, the description is relatively simple, and the relevant points can be referred to the partial description of the method embodiment.
The application is operational with numerous general purpose or special purpose computing system environments or configurations. For example: personal computers, server computers, hand-held or portable devices, tablet-type devices, multiprocessor systems, microprocessor-based systems, set top boxes, programmable consumer electronics, network PCs, minicomputers, mainframe computers, distributed computing environments that include any of the above systems or devices, and the like.
In the several embodiments provided in the present application, it should be understood that the disclosed method and apparatus may be implemented in other manners. For example, the above-described device embodiments are merely illustrative, and for example, the division of the modules or units is only one logical division, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the embodiment.
In addition, functional units in the embodiments of the present application may be integrated into one processing unit, or each of the units may exist alone physically, or two or more units may be integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.
The above description is only an example of the present application and is not intended to limit the scope of the present application, and all modifications of equivalent structures and equivalent processes, which are made by the contents of the specification and the drawings, or which are directly or indirectly applied to other related technical fields, are intended to be included within the scope of the present application.
Claims (12)
1. A frequency control method of a compressor, characterized in that the frequency control method comprises:
obtaining a first target frequency indicative of operation of the compressor;
acquiring electrical input parameters, operating power and an ambient temperature of the compressor in real time, wherein the ambient temperature is the ambient temperature in the operating space of the compressor;
modifying the first target frequency to a second target frequency based on the electrical input parameter, the operating power, and the loop temperature;
controlling the compressor to operate at the second target frequency.
2. The frequency control method of claim 1, wherein said modifying the first target frequency to a second target frequency based on the electrical input parameter, the operating power, and the loop temperature comprises:
acquiring 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 the value, and each electrical gear is provided with the corresponding first correction parameter;
acquiring a second correction parameter corresponding to the operating power, wherein the operating power is divided into a plurality of power gears according to the numerical value, and each power gear is provided with the corresponding second correction parameter;
acquiring a third correction parameter corresponding to the environment temperature, wherein the environment temperature is divided into a plurality of temperature gears according to the value, and each temperature gear is provided with the corresponding third correction parameter;
and calculating to obtain the second target frequency based on the first correction parameter, the second correction parameter, the third correction parameter and the first target frequency.
3. The method of claim 2, wherein prior to obtaining the first modified parameter corresponding to the electrical input parameter, obtaining the second modified parameter corresponding to the operating power, and obtaining the third modified parameter corresponding to the loop temperature, the method further comprises:
confirming that the running frequency of the compressor is in an ascending frequency interval or a descending frequency interval;
if the operating frequency of the compressor is in the frequency rising interval, acquiring the first correction parameter corresponding to the electrical input parameter and the frequency rising interval, acquiring the second correction parameter corresponding to the operating power and the frequency rising interval, and acquiring the third correction parameter corresponding to the environment temperature and the frequency rising interval;
and if the operating frequency of the compressor is in a frequency reduction interval, acquiring the first correction parameter corresponding to the electrical input parameter and the frequency reduction interval, acquiring the second correction parameter corresponding to the operating power and the frequency reduction interval, and acquiring the third correction parameter corresponding to the environment temperature and the frequency reduction interval.
4. The frequency control method according to claim 2 or 3, characterized in that the second target frequency is a product of the first target frequency and a first correction parameter, the second correction parameter and the third correction parameter.
5. The frequency control method of claim 1, wherein said obtaining a first target frequency indicative of operation of the compressor comprises:
collecting real-time temperature in each cavity and collecting the environment temperature and the environment humidity of the compressor;
and calculating to obtain the first target frequency based on the difference value between each real-time temperature and the corresponding preset temperature, the difference value between the ring temperature and the corresponding preset temperature, and the difference value between the environment humidity and the preset humidity.
6. The frequency control method of claim 5, wherein the chamber comprises a refrigeration cavity and a freezing cavity; the real-time temperature in each chamber of collection includes:
and respectively collecting the real-time temperatures of the refrigerating cavity and the freezing cavity.
7. The frequency control method according to claim 5 or 6, wherein the first target frequency is a sum of a difference between each of the real-time temperatures and a corresponding preset temperature, a difference between the ambient temperature and a preset temperature, and a product of a difference between the ambient humidity and a preset humidity and a corresponding temperature and humidity influence factor coefficient.
8. The frequency control method of claim 1, wherein said controlling the compressor to operate at the second target frequency comprises:
and outputting the second target frequency and the corresponding frequency increasing rate and frequency increasing duration or outputting the second target frequency and the corresponding frequency decreasing rate and frequency decreasing duration based on the second target frequency and a preset frequency increasing and decreasing rule.
9. The frequency control method according to claim 8, wherein the frequency lifting rule comprises a plurality of frequency platforms, an operation duration corresponding to the frequency platforms, and a frequency raising rate and a frequency lowering rate between adjacent frequency platforms;
if the second target frequency crosses over at least one of the frequency platforms relative to the first target frequency during frequency raising, the outputting the second target frequency and the frequency raising rate and the frequency raising duration corresponding to the second target frequency comprises:
and outputting the second target frequency, the frequency raising rate, the frequency raising duration and the running duration of the frequency platform.
10. A storage medium having program data stored thereon, the program data, when executed by a processor, implementing the steps of the frequency control method according to any one of claims 1 to 9.
11. A computer arrangement, comprising a processor and a memory connected to each other, the memory storing a computer program which, when executed by the processor, carries out the steps of the frequency control method according to any one of claims 1 to 9.
12. Refrigeration appliance, characterized in that it comprises a compressor for refrigeration and a computer device according to claim 11, which is connected in communication with the compressor.
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011075258A (en) * | 2009-10-02 | 2011-04-14 | Hitachi Appliances Inc | Refrigerating cycle device |
| CN105135618A (en) * | 2015-09-10 | 2015-12-09 | 深圳创维空调科技有限公司 | Frequency increasing method and system for variable frequency air conditioner |
| CN110057047A (en) * | 2019-03-21 | 2019-07-26 | 青岛海尔空调器有限总公司 | The refrigeration control method and control device of air conditioner |
| CN111780346A (en) * | 2020-06-04 | 2020-10-16 | 海信（山东）空调有限公司 | Air conditioner heat exchange efficiency control method and air conditioner |
| CN113251639A (en) * | 2021-04-22 | 2021-08-13 | 青岛海尔空调器有限总公司 | Control method and device for air conditioner compressor and air conditioner |
| CN114264057A (en) * | 2021-12-31 | 2022-04-01 | Tcl空调器(中山)有限公司 | Control method, device and equipment of air conditioner and computer readable storage medium |
| CN114322266A (en) * | 2022-01-04 | 2022-04-12 | 广东美的制冷设备有限公司 | Frequency control method of compressor, controller, air conditioner and storage medium |
-
2022
- 2022-05-23 CN CN202210564814.2A patent/CN114962234A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011075258A (en) * | 2009-10-02 | 2011-04-14 | Hitachi Appliances Inc | Refrigerating cycle device |
| CN105135618A (en) * | 2015-09-10 | 2015-12-09 | 深圳创维空调科技有限公司 | Frequency increasing method and system for variable frequency air conditioner |
| CN110057047A (en) * | 2019-03-21 | 2019-07-26 | 青岛海尔空调器有限总公司 | The refrigeration control method and control device of air conditioner |
| CN111780346A (en) * | 2020-06-04 | 2020-10-16 | 海信（山东）空调有限公司 | Air conditioner heat exchange efficiency control method and air conditioner |
| CN113251639A (en) * | 2021-04-22 | 2021-08-13 | 青岛海尔空调器有限总公司 | Control method and device for air conditioner compressor and air conditioner |
| CN114264057A (en) * | 2021-12-31 | 2022-04-01 | Tcl空调器(中山)有限公司 | Control method, device and equipment of air conditioner and computer readable storage medium |
| CN114322266A (en) * | 2022-01-04 | 2022-04-12 | 广东美的制冷设备有限公司 | Frequency control method of compressor, controller, air conditioner and storage medium |
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