Method, device, equipment and storage medium for regulating electronic expansion valve

Abstract

The present application relates to the technical field of electronic expansion valve control, and discloses an adjusting method, device and equipment of an electronic expansion valve and a storage medium, which are used for shortening the adjusting period of the electronic expansion valve, thereby improving the adjusting efficiency of the electronic expansion valve.The adjusting method of the electronic expansion valve comprises the following steps: obtaining the current superheat of the electronic expansion valve, determining the target superheat difference value through the current superheat and the preset superheat, shortening the preset adjusting period of the electronic expansion valve when the target superheat difference value meets the preset condition, obtaining the target adjusting period, and adjusting the electronic expansion valve through the target adjusting period, thereby improving the adjusting efficiency of the electronic expansion valve.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of electronic expansion valve control, and in particular to an electronic expansion valve adjusting method, device, equipment and storage medium. BACKGROUND

[0002] The electronic expansion valve adjusts the opening degree of the electronic expansion valve by influencing parameters, thereby achieving the purpose of adjusting the liquid supply.

[0003] The electronic expansion valve adjusting method generally comprises: obtaining the current superheat degree of the electronic expansion valve; calculating the difference between the current superheat degree and a preset superheat degree to obtain a target superheat degree difference; determining a target variable through the target superheat degree difference; and adjusting the electronic expansion valve through the target variable.

[0004] In the existing technology, the electronic expansion valve is adjusted by a variable, which results in low adjusting efficiency. SUMMARY

[0005] The present application provides an electronic expansion valve adjusting method, device, equipment and storage medium, which shortens the adjusting cycle of the electronic expansion valve, thereby improving the adjusting efficiency of the electronic expansion valve.

[0006] The first aspect of the present application provides an electronic expansion valve adjusting method, comprising: obtaining the superheat degree of the current cycle of the electronic expansion valve to obtain a current superheat degree; calculating the difference between the current superheat degree and a preset superheat degree to obtain a target superheat degree difference; determining whether the target superheat degree difference meets a preset condition; if the target superheat degree difference meets the preset condition, shortening the preset adjusting cycle of the electronic expansion valve to obtain a target adjusting cycle; and adjusting the electronic expansion valve through the target adjusting cycle.

[0007] In a feasible implementation manner, after adjusting the electronic expansion valve through the target adjusting cycle, the method further comprises: determining an initial variable of the electronic expansion valve through the target superheat degree difference, wherein the initial variable is an adjusting parameter of the electronic expansion valve; obtaining compressor frequency adjusting information and cycle information of a historical variable; determining a state of the electronic expansion valve through the initial variable, the compressor adjusting information and the cycle information of the historical variable to obtain a target state, wherein the target state is a continuously increasing state, a continuously decreasing state, an unstable state or a normal state; and adjusting the electronic expansion valve based on the target state.

[0008] In an implementation, the adjusting the electronic expansion valve based on the target state comprises: if the electronic expansion valve is in the continuously increasing state or the continuously decreasing state, determining a target compensation amount based on the target superheat difference, obtaining a target variable, and adjusting the electronic expansion valve based on the target compensation amount and the target variable; and if the electronic expansion valve is in the unstable state, performing stability adjustment on the electronic expansion valve.

[0009] In an implementation, the determining the state of the electronic expansion valve based on the initial variable, the compressor adjustment information, and the periodic information of the historical variable to obtain a target state comprises: calculating a target variable based on the initial variable and the compressor adjustment information; processing the periodic information of the historical variable based on the target variable to obtain processed periodic information; and determining the state of the electronic expansion valve based on the processed periodic information to obtain the target state.

[0010] In an implementation, the performing stability adjustment on the electronic expansion valve if the electronic expansion valve is in the unstable state comprises: reducing the target variable to half of the original value to obtain a first variable; and adjusting the electronic expansion valve based on the first variable.

[0011] In an implementation, the performing stability adjustment on the electronic expansion valve if the electronic expansion valve is in the unstable state further comprises: prolonging the target adjustment period to obtain a first prolonged period; and adjusting the electronic expansion valve based on the first prolonged period.

[0012] In an implementation, the performing stability adjustment on the electronic expansion valve if the electronic expansion valve is in the unstable state further comprises: reducing the target variable to half of the original value to obtain a second variable; prolonging the target adjustment period to obtain a second prolonged period; and adjusting the electronic expansion valve based on the second variable and the second prolonged period.

[0013] The second aspect of the present application provides a regulating device of an electronic expansion valve, comprising: a first obtaining module, configured to obtain a superheat degree of a current period of the electronic expansion valve, to obtain a current superheat degree; a calculating module, configured to calculate a difference between the current superheat degree and a preset superheat degree, to obtain a target superheat degree difference; a judging module, configured to judge whether the target superheat degree difference meets a preset condition; a processing module, configured to shorten a preset regulating period of the electronic expansion valve to obtain a target regulating period if the target superheat degree difference meets the preset condition; and a first regulating module, configured to regulate the electronic expansion valve through the target regulating period.

[0014] In an implementable embodiment, the regulating device of the electronic expansion valve further comprises: a first determining module, configured to determine an initial variable of the electronic expansion valve through the target superheat degree difference, the initial variable being a regulating parameter of the electronic expansion valve; a second obtaining module, configured to obtain compressor frequency regulating information and period information of a historical variable; a second determining module, configured to determine a state of the electronic expansion valve through the initial variable, the compressor regulating information and the period information of the historical variable, to obtain a target state, the target state being a continuously increasing state, a continuously decreasing state, an unstable state or a normal state; and a second regulating module, configured to regulate the electronic expansion valve based on the target state.

[0015] In an implementable embodiment, the second regulating module comprises: a first regulating unit, configured to determine a target compensation amount through the target superheat degree difference and obtain a target variable if the electronic expansion valve is in the continuously increasing state or the continuously decreasing state, and determine the regulation of the electronic expansion valve based on the target compensation amount and the target variable; and a second regulating unit, configured to perform stability regulation on the electronic expansion valve if the electronic expansion valve is in the unstable state.

[0016] In an implementable embodiment, the second determining module is specifically configured to: calculate through the initial variable and the compressor regulating information to obtain a target variable; perform operation processing on the period information of the historical variable through the target variable to obtain processed period information; and determine the state of the electronic expansion valve through the processed period information to obtain a target state.

[0017] In an implementable embodiment, the second regulating unit is specifically configured to: reduce the target variable to half of the original to obtain a first variable; and regulate the electronic expansion valve through the first variable.

[0018] In an implementable embodiment, the second adjusting unit is further configured to: extend the target adjusting period to obtain a first extended period; and adjust the electronic expansion valve by using the first extended period.

[0019] In an implementable embodiment, the second adjusting unit is further configured to: reduce the target variable to 1 / 2 to obtain a second variable; extend the target adjusting period to obtain a second extended period; and adjust the electronic expansion valve by using the second variable and the second extended period.

[0020] The third aspect of the present application provides an adjusting device of an electronic expansion valve, comprising a memory and at least one processor, the memory storing instructions; the at least one processor invokes the instructions in the memory to enable the adjusting device of the electronic expansion valve to perform the adjusting method of the electronic expansion valve.

[0021] The fourth aspect of the present application provides a computer readable storage medium, the computer readable storage medium storing instructions, when the instructions are run on a computer, enabling the computer to perform the adjusting method of the electronic expansion valve.

[0022] In the technical solution provided by the present application, the current superheat degree of the electronic expansion valve is obtained to obtain a current superheat degree, the difference between the current superheat degree and a preset superheat degree is calculated to obtain a target superheat degree difference, it is determined whether the target superheat degree difference meets a preset condition, if the target superheat degree difference meets the preset condition, the preset adjusting period of the electronic expansion valve is shortened to obtain a target adjusting period, and the electronic expansion valve is adjusted by using the target adjusting period. In the embodiment of the present application, the current superheat degree of the electronic expansion valve is obtained, the target superheat degree difference is determined by using the current superheat degree and a preset superheat degree, the preset adjusting period of the electronic expansion valve is shortened to obtain a target adjusting period when the target superheat degree difference meets a preset condition, and the electronic expansion valve is adjusted by using the target adjusting period, thereby improving the adjusting efficiency of the electronic expansion valve. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 An embodiment of the adjusting method of the electronic expansion valve in the present application is shown in the figure;

[0024] Figure 2 Another embodiment of the adjusting method of the electronic expansion valve in the present application is shown in the figure;

[0025] Figure 3 An embodiment of the adjusting device of the electronic expansion valve in the present application is shown in the figure;

[0026] Figure 4 Figure 2 is a schematic diagram of another embodiment of the regulating device of the electronic expansion valve in the embodiment of the present application;

[0027] Figure 5 Figure 1 is a schematic diagram of an embodiment of the regulating device of the electronic expansion valve in the embodiment of the present application. DETAILED DESCRIPTION

[0028] The embodiment of the present application provides a regulating method, device, equipment and storage medium of an electronic expansion valve, and the regulating efficiency of the electronic expansion valve is improved by shortening the regulating period of the electronic expansion valve.

[0029] The terms "first", "second", "third", "fourth" and the like in the description, claims, and drawings of the present application, and the above-described drawings, if any, are used to distinguish similar objects, and are not necessarily used to describe a particular sequential or chronological order. It should be understood that the data thus used can be interchanged under appropriate circumstances, so that the embodiments described herein can be implemented in an order other than that illustrated or described herein. In addition, the terms "comprise" or "have" and any variations thereof are intended to cover non-exclusive inclusion, for example, a process, method, system, product, or device comprising a series of steps or units does not necessarily have to be limited to those steps or units clearly listed, but can include other steps or units not clearly listed or inherent to these processes, methods, products, or devices.

[0030] It can be understood that the execution subject of the present application can be a regulating device of an electronic expansion valve, and can also be a terminal or a server, and the specific embodiments are not limited herein. The embodiment of the present application takes the server as the execution subject for example.

[0031] For the convenience of understanding, the specific flow of the embodiment of the present application is described below, please refer to Figure 1 An embodiment of the regulating method of the electronic expansion valve in the embodiment of the present application comprises the following steps.

[0032] 101, obtaining the superheat degree of the current period of the electronic expansion valve, to obtain the current superheat degree;

[0033] The back gas temperature and the evaporation temperature of the current period are obtained, the back gas temperature indicates the measured liquid temperature at the suction port of the compressor, the evaporation temperature indicates the measured liquid temperature when evaporating in the evaporator, and the current superheat degree of the electronic expansion valve is determined by the back gas temperature and the evaporation temperature. The liquid temperature at the suction port of the compressor is detected by a first temperature detector to obtain the back gas temperature, the liquid temperature when evaporating in the evaporator is detected by a second temperature detector to obtain the evaporation temperature, and the current superheat degree is obtained by subtracting the evaporation temperature from the back gas temperature.

[0034] 102, calculating the difference between the current superheat degree and the preset superheat degree, to obtain the target superheat degree difference;

[0035] acquire a calculation data storage space, determine whether the calculation data storage space is greater than a preset storage space, if the calculation data storage space is less than or equal to the preset storage space, use a preset compression algorithm to compress the calculation data, reduce the occupied space of the calculation data, calculate the difference between the current overheat degree and the preset overheat degree, obtain the target overheat difference, and store the target overheat difference in the calculation data storage space.

[0036] 103, determine whether the target overheat difference meets a preset condition;

[0037] The preset condition is that the target overheat difference is greater than a first preset difference and the duration is greater than a preset duration, or the target overheat difference is less than a second preset difference and the duration is greater than a preset duration.

[0038] Determine whether the overheat difference is greater than the first preset difference and the duration is greater than the preset duration, if yes, determine that the target overheat difference meets the preset condition, if no, determine whether the target overheat difference is less than the second preset difference and the duration is greater than the preset duration, if yes, determine that the target overheat difference meets the preset condition, if no, determine that the target overheat difference does not meet the preset condition.

[0039] For example, if the first preset difference is 1℃, the second preset difference is -1℃, and the preset duration is 3min, when the target overheat difference is greater than 1℃ and the duration of the target overheat difference being greater than 1℃ is greater than 3min, it is determined that the target overheat difference meets the preset condition; if the target overheat difference is less than -1℃ and the duration of the target overheat difference being less than -1℃ is greater than 3min, it is determined that the target overheat difference meets the preset condition; if -1℃≤target overheat difference≤1℃, it is determined that the target overheat difference does not meet the preset condition.

[0040] 104, if the target overheat difference meets the preset condition, shorten the preset adjustment period of the electronic expansion valve to obtain a target adjustment period;

[0041] When the target overheat difference meets the preset condition, the preset adjustment period of the electronic expansion valve is shortened to half of the original by a preset formula, the preset formula is: target adjustment period = preset adjustment period / 2, for example, when the preset adjustment period is 1min, the target adjustment period is calculated by the preset formula to be 1min / 2 = 0.5min = 30s. If the target overheat difference does not meet the preset condition, the electronic expansion valve is adjusted according to the preset adjustment period.

[0042] 105, adjust the electronic expansion valve by the target adjustment period.

[0043] After the electronic expansion valve is regulated by the target regulation period, the period information of the historical variable is acquired, the target variable is determined by the target superheat difference, whether the electronic expansion valve is in a stable state is determined by the period information of the historical variable and the target variable, and when the electronic expansion valve is in an unstable state, the electronic expansion valve is regulated by the preset regulation method, so that the stability of the electronic expansion valve regulation is improved.

[0044] In the embodiment of the present application, the current superheat of the electronic expansion valve is acquired, the target superheat difference is determined by the current superheat and the preset superheat, when the target superheat difference meets the preset condition, the preset regulation period of the electronic expansion valve is shortened to obtain the target regulation period, and the electronic expansion valve is regulated by the target regulation period, so that the regulation efficiency of the electronic expansion valve is improved.

[0045] Please refer to Figure 2 Another embodiment of the electronic expansion valve regulation method in the embodiment of the present application comprises:

[0046] 201, the superheat of the current period of the electronic expansion valve is acquired to obtain the current superheat;

[0047] 202, the difference between the current superheat and the preset superheat is calculated to obtain the target superheat difference;

[0048] 203, whether the target superheat difference meets the preset condition is determined;

[0049] 204, if the target superheat difference meets the preset condition, the preset regulation period of the electronic expansion valve is shortened to obtain the target regulation period;

[0050] 205, the electronic expansion valve is regulated by the target regulation period;

[0051] The execution process of steps 201-205 is similar to the execution process of steps 101-105, and will not be repeated here.

[0052] 206, the initial variable of the electronic expansion valve is determined by the target superheat difference, and the initial variable is the regulation parameter of the electronic expansion valve;

[0053] If the target superheat difference is greater than the preset first threshold, a first adjustment step is determined to obtain the initial variable; if the target superheat difference is less than or equal to the preset first threshold and greater than the preset second threshold, a second adjustment step is determined to obtain the initial variable; if the target superheat difference is less than or equal to the preset second threshold and greater than the preset third threshold, a third adjustment step is determined to obtain the initial variable; if the target superheat difference is less than or equal to the preset third threshold and greater than the preset fourth threshold, a fourth adjustment step is determined to obtain the initial variable; if the target superheat difference is less than or equal to the preset fourth threshold, a fifth adjustment step is determined to obtain the initial variable.

[0054] For example, when the first threshold is 2℃, the second threshold is 1℃, the third threshold is -1℃, the fourth threshold is -2℃, the first adjustment step is 4, the second adjustment step is 2, the third adjustment step is 0, the fourth adjustment step is -2, and the fifth adjustment step is -4, if the target superheat difference is greater than 2℃, the initial variable is determined to be 4; if the target superheat difference is less than or equal to 2℃ and greater than 1℃, the initial variable is determined to be 2; if the target superheat difference is less than or equal to 1℃ and greater than -1℃, the initial variable is determined to be 0; if the target superheat difference is less than or equal to -1℃ and greater than -2℃, the initial variable is determined to be -2; if the target superheat difference is less than or equal to -2℃, the initial variable is determined to be -4.

[0055] It should be noted that in the variable and related adjustment of the variable in the embodiment, a positive value indicates an increase, and a negative value indicates a decrease. For example, when the initial variable is 4, it means increasing the opening degree by 4; when the initial variable is -2, it means decreasing the opening degree by 2.

[0056] 207、obtaining compressor frequency adjustment information and cycle information of the historical variable;

[0057] The ambient temperature is obtained, and the ambient temperature is subtracted from the preset ambient temperature to obtain an ambient temperature difference. The ambient temperature difference is compared with the preset ambient temperature difference. When the ambient temperature difference is greater than the preset ambient temperature difference, it is determined that the compressor needs to increase the frequency and the frequency of the compressor is determined to be increased to obtain the compressor frequency adjustment information. When the ambient temperature difference is less than the preset ambient temperature difference, it is determined that the compressor needs to decrease the frequency and the frequency of the compressor is determined to be decreased to obtain the compressor frequency adjustment information. When the ambient temperature difference is equal to the preset ambient temperature difference, it is determined that the compressor does not need to be processed for frequency increase and decrease, and the compressor frequency adjustment information is obtained. The cycle information of the historical variable includes the cumulative adjustment cycle number, the continuous increase cycle number, the continuous decrease cycle number, the cumulative increase cycle number, and the cumulative decrease cycle number.

[0058] 208、determining the state of the electronic expansion valve through the initial variable, the compressor adjustment information and the period information of the historical variable, obtaining a target state, the target state being a continuously increasing state, a continuously decreasing state, an unstable state or a normal state;

[0059] calculating the target variable through the initial variable and the compressor adjustment information, processing the period information of the historical variable through the target variable, obtaining processed period information, and determining the state of the electronic expansion valve through the processed period information, obtaining a target state.

[0060] calculating the target variable through the initial variable and the compressor adjustment information, including: determining the value of the rising or falling frequency of the compressor through the compressor frequency information, obtaining a target frequency value, calculating a first additional variable through the target frequency value and a first compensation coefficient, if the compressor frequency information indicates that the compressor frequency is rising, increasing the initial variable through the first additional variable to obtain the target variable, and if the compressor frequency information indicates that the compressor frequency is falling, decreasing the initial variable through the first additional variable to obtain the target variable.

[0061] when the rising or falling frequency of the compressor is A Hz, the target frequency value is A, the first additional variable is obtained through the first preset formula, the first preset formula is: first additional variable = A * K1, K1 is the first compensation coefficient, K1 = 1, if the compressor frequency is rising, the initial variable is added to the first additional variable to obtain the target variable, and if the compressor frequency is falling, the initial variable is subtracted from the first additional variable to obtain the target variable.

[0062] if the target variable is greater than zero, the continuously increasing period and the cumulative increasing period number in the period information of the historical variable are both increased by 1 to obtain processed period information, the processed period information including the cumulative adjustment period number, the processed continuously increasing period number, the continuously decreasing period number, the processed cumulative increasing period number and the cumulative decreasing period number, when the processed continuously increasing period number is greater than a preset first period number, the target state of the electronic expansion valve is determined, the target state being a continuously increasing state, if the cumulative adjustment period number is greater than a preset second period number, and the sum of the processed cumulative increasing period number and the cumulative decreasing period number is greater than 1 / 2 of the cumulative period number, the target state of the electronic expansion valve is determined, the target state being an unstable state, and the preset second period number being twice the preset first period number.

[0063] If the target variable is less than zero, the number of continuous reduction periods and the cumulative number of reduction periods in the period information of the historical variable are both increased by 1, to obtain processed period information, the processed period information includes the cumulative number of adjustment periods, the number of continuous increase periods, the processed number of continuous reduction periods, the cumulative number of increase periods, and the processed cumulative number of increase periods, when the processed number of continuous reduction periods is greater than a preset first period number, the target state of the electronic expansion valve is determined, and the target state is a continuous reduction state. If the cumulative number of adjustment periods is greater than a preset second period number, and the sum of the cumulative number of increase periods and the processed number of continuous reduction periods is greater than 1 / 2 of the cumulative period number, the target state of the electronic expansion valve is determined, and the target state is an unstable state.

[0064] 209. Adjusting the electronic expansion valve according to the target state.

[0065] If the electronic expansion valve is in a continuous increase state or a continuous reduction state, the target compensation amount is determined by the target superheat difference value, and the target variable is obtained, and the adjustment of the electronic expansion valve is determined based on the target compensation amount and the target variable; if the electronic expansion valve is in an unstable state, the stability of the electronic expansion valve is adjusted.

[0066] The target compensation amount = K2*target superheat difference value, K2 is a second compensation coefficient, the second compensation coefficient is set according to the specific situation, for example, the second compensation coefficient is set to 1.

[0067] If the electronic expansion valve is in a continuous increase state, the target variable is added to the target compensation variable to obtain a first compensated target variable, and the electronic expansion valve is adjusted by the first compensated target variable. If the electronic expansion valve is in a continuous reduction state, the target variable is subtracted from the target compensation variable to obtain a second compensated target variable, and the electronic expansion valve is adjusted by the second compensated target variable.

[0068] When the electronic expansion valve is in an unstable state or a normal state, the target period number is obtained from the number of continuous increase periods and the number of continuous reduction periods, the target period number is the number of continuous increase periods or continuous reduction periods indicating a non-zero value; the target period number is processed to zero, and the data in the historical variable period information other than the target period number is processed accordingly.

[0069] When the target variable is greater than zero, it is determined whether the continuous decrease cycle number is zero. If the continuous decrease cycle number is not zero, the continuous decrease cycle number is determined as the target cycle number, the continuous decrease cycle number is processed to be zero, and the cumulative adjustment cycle number, the continuous increase cycle number and the cumulative increase cycle number are all increased by 1, and the cumulative decrease cycle number is not processed. When the target variable is less than zero, it is determined whether the continuous increase cycle number is zero. If the continuous increase cycle number is not zero, the continuous increase cycle number is determined as the target cycle number, the continuous increase cycle number is processed to be zero, and the cumulative cycle number, the continuous decrease cycle number and the cumulative decrease cycle number are all increased by 1, and the cumulative increase cycle number is not processed. When the target variable is zero, it is determined whether there is a continuous increase cycle number that is not zero or a continuous decrease cycle number that is not zero in the cycle information of the history variable. If there is a continuous increase cycle number that is not zero, the continuous increase cycle number is determined as the target cycle number, and the continuous increase cycle number is processed to be zero, and the cumulative adjustment cycle number, the continuous decrease cycle number, the cumulative increase cycle number and the cumulative decrease cycle number are not processed. If there is a continuous decrease cycle number that is not zero, the continuous decrease cycle number is determined as the target cycle number, and the continuous decrease cycle number is processed to be zero, and the cumulative adjustment cycle number, the continuous increase cycle number, the cumulative increase cycle number and the cumulative decrease cycle number are not processed.

[0070] If the electronic expansion valve is in a continuous increase state, the cumulative adjustment cycle number, the continuous increase cycle number and the cumulative increase cycle number are increased by 1, and the continuous decrease cycle number and the cumulative decrease cycle number are not processed. If the electronic expansion valve is in a continuous decrease state, the cumulative adjustment cycle number, the continuous decrease cycle number and the cumulative decrease cycle number are increased by 1, and the continuous increase cycle number and the cumulative increase cycle number are not processed.

[0071] If the electronic expansion valve is in an unstable state, the adjustment of the electronic expansion valve can be: 1. The target variable is reduced to half of the original, to obtain a first variable; the electronic expansion valve is adjusted by the first variable. For example, the target variable is 4, the target variable 4 is reduced to half of the original, to obtain a first variable, the first variable is 2, and the electronic expansion valve is increased by 2 gears. In this adjustment case, in the process of calculating the target variable by the initial variable and the compressor adjustment information, when the compressor frequency rises or falls by AHz, a second additional variable is calculated by a second preset formula, and the second preset formula is: second additional variable = A*3*K1.

[0072] 2, the target adjustment period is extended to obtain a first extended period; the electronic expansion valve is adjusted by the first extended period. For example, the target adjustment period is extended to 4 times of the original, to obtain the first extended period, if the target adjustment period is 30s, the first extended period is 2min, then the electronic expansion valve is adjusted by the period of 2min once. In this adjustment case, in the process of calculating the target variable by the initial variable and the compressor adjustment information, when the compressor frequency rises or falls AHz, the second additional variable is obtained by calculating by the second preset formula, and the second preset formula is: second additional variable = A*3*K.

[0073] 3, the target variable is reduced to 1 / 2 of the original to obtain a second variable; the target adjustment period is extended to obtain a second extended period; the electronic expansion valve is adjusted by the second variable and the second extended period. For example, the target variable is -4, the target adjustment period is extended to 2 times of the original, and the target adjustment period is 30s, then the target variable -4 is reduced to 1 / 2 of the original to obtain the second variable, the second variable is -2, since the target adjustment period is 30s, the second extended period is 1min, then the electronic expansion valve is adjusted by 2 notches, and the electronic expansion valve is adjusted by 2min once in the next period. In this adjustment case, if the compressor frequency changes, the unstable state is exited.

[0074] If the electronic expansion valve is not in the unstable state, and the sum of the cumulative increase number and the cumulative decrease number accounts for less than or equal to 50% of the total cycle number, the cumulative adjustment cycle number, the continuous increase cycle number, the continuous decrease cycle number, the cumulative increase cycle number and the cumulative decrease cycle number are reset to zero.

[0075] If the electronic expansion valve is in the unstable state, when the sum of the cumulative increase number and the cumulative decrease number accounts for less than 30% of the total cycle number, the unstable state is exited, and the cumulative adjustment cycle number, the continuous increase cycle number, the continuous decrease cycle number, the cumulative increase cycle number and the cumulative decrease cycle number are reset to zero.

[0076] In addition, when any of the following conditions is met, the unstable state is exited:

[0077] 1. The target superheat difference is greater than the first preset difference, and lasts for more than 10 minutes; 2. The target superheat difference is less than the second preset difference, and lasts for more than 10 minutes; 3. The electronic expansion valve is increased for N / 2 consecutive cycles; 4. The electronic expansion valve is decreased for N / 2 consecutive cycles.

[0078] In the embodiment of the present application, the current superheat degree of the electronic expansion valve is obtained, the target superheat degree difference is determined according to the current superheat degree and the preset superheat degree, the preset adjustment period of the electronic expansion valve is shortened when the target superheat degree difference meets the preset condition, the target adjustment period is obtained, and the electronic expansion valve is adjusted according to the target adjustment period, thereby improving the adjustment efficiency of the electronic expansion valve, and the initial variable of the electronic expansion valve is determined according to the target superheat degree difference; the compressor frequency adjustment information and the cycle information of the historical variable are obtained; whether the electronic expansion valve is in an unstable state is determined according to the initial variable, the compressor adjustment information and the cycle information of the historical variable; if the electronic expansion valve is in an unstable state, the electronic expansion valve is adjusted correspondingly; the stability of the electronic expansion valve after the adjustment efficiency is improved is determined, and the electronic expansion valve in the unstable state is adjusted correspondingly, thereby improving the stability of the electronic expansion valve adjustment.

[0079] The adjustment method of the electronic expansion valve in the embodiment of the present application is described above, and the adjustment device of the electronic expansion valve in the embodiment of the present application is described below, please refer to Figure 3 The adjustment device of the electronic expansion valve in the embodiment of the present application includes one embodiment:

[0080] The first acquisition module 301 is configured to obtain the superheat degree of the current cycle of the electronic expansion valve, and obtain the current superheat degree.

[0081] The calculation module 302 is configured to calculate the difference between the current superheat degree and the preset superheat degree, and obtain the target superheat degree difference.

[0082] The judgment module 303 is configured to determine whether the target superheat degree difference meets the preset condition.

[0083] The processing module 304 is configured to shorten the preset adjustment period of the electronic expansion valve to obtain the target adjustment period if the target superheat degree difference meets the preset condition.

[0084] The first adjustment module 305 is configured to adjust the electronic expansion valve according to the target adjustment period.

[0085] In the embodiment of the present application, the current superheat degree of the electronic expansion valve is obtained, the target superheat degree difference is determined according to the current superheat degree and the preset superheat degree, the preset adjustment period of the electronic expansion valve is shortened when the target superheat degree difference meets the preset condition, the target adjustment period is obtained, and the electronic expansion valve is adjusted according to the target adjustment period, thereby improving the adjustment efficiency of the electronic expansion valve.

[0086] Please refer to Figure 4 Another embodiment of the adjustment device of the electronic expansion valve in the embodiment of the present application includes:

[0087] The first obtaining module 301 is configured to obtain a superheat degree of a current period of the electronic expansion valve, and obtain a current superheat degree.

[0088] The calculating module 302 is configured to calculate a difference between the current superheat degree and a preset superheat degree, and obtain a target superheat degree difference.

[0089] The judging module 303 is configured to judge whether the target superheat degree difference meets a preset condition.

[0090] The processing module 304 is configured to shorten a preset adjustment period of the electronic expansion valve to obtain a target adjustment period, if the target superheat degree difference meets the preset condition.

[0091] The first adjustment module 305 is configured to adjust the electronic expansion valve by using the target adjustment period.

[0092] Optionally, the adjustment device of the electronic expansion valve further comprises:

[0093] The first determining module 306 is configured to determine an initial variable of the electronic expansion valve by using the target superheat degree difference, the initial variable being an adjustment parameter of the electronic expansion valve.

[0094] The second obtaining module 307 is configured to obtain compressor frequency adjustment information and period information of a historical variable.

[0095] The second determining module 308 is configured to determine a state of the electronic expansion valve by using the initial variable, the compressor adjustment information and the period information of the historical variable, and obtain a target state, the target state being a continuously increasing state, a continuously decreasing state, an unstable state or a normal state.

[0096] The second adjustment module 309 is configured to adjust the electronic expansion valve based on the target state.

[0097] Optionally, the second adjustment module 309 comprises:

[0098] The first adjustment unit 3091 is configured to determine a target compensation amount by using the superheat degree difference, and obtain a target variable, if the electronic expansion valve is in the continuously increasing state or the continuously decreasing state, and adjust the electronic expansion valve based on the target compensation amount and the target variable.

[0099] The second adjustment unit 3092 is configured to adjust the electronic expansion valve in stability, if the electronic expansion valve is in the unstable state.

[0100] Optionally, the second determining module 308 can be specifically configured to:

[0101] The target variable is obtained by calculation through the initial variable and the compressor adjustment information; the processed periodic information is obtained by operation processing of the periodic information of the historical variable through the target variable; and the state of the electronic expansion valve is determined through the processed periodic information, so as to obtain the target state.

[0102] Optionally, the second adjustment unit 3092 can be specifically used for:

[0103] The target variable is reduced to half of the original value to obtain a first variable; and the electronic expansion valve is adjusted through the first variable.

[0104] Optionally, the second adjustment unit 3092 can be specifically used for:

[0105] The target adjustment period is extended to obtain a first extended period; and the electronic expansion valve is adjusted through the first extended period.

[0106] Optionally, the second adjustment unit 3092 can be specifically used for:

[0107] The target variable is reduced to half of the original value to obtain a second variable; the target adjustment period is extended to obtain a second extended period; and the electronic expansion valve is adjusted through the second variable and the second extended period.

[0108] In the embodiment of the present application, the current superheat degree of the electronic expansion valve is obtained, the target superheat degree difference is determined through the current superheat degree and the preset superheat degree, the preset adjustment period of the electronic expansion valve is shortened when the target superheat degree difference meets the preset condition to obtain the target adjustment period, and the electronic expansion valve is adjusted through the target adjustment period, so as to improve the adjustment efficiency of the electronic expansion valve. The initial variable of the electronic expansion valve is determined through the target superheat degree difference; the compressor frequency adjustment information and the periodic information of the historical variable are obtained; whether the electronic expansion valve is in an unstable state is determined through the initial variable, the compressor adjustment information and the periodic information of the historical variable; if the electronic expansion valve is in an unstable state, the electronic expansion valve is adjusted correspondingly; the stability of the electronic expansion valve after the adjustment efficiency of the electronic expansion valve is improved is determined, and the electronic expansion valve in the unstable state is adjusted correspondingly, so as to improve the stability of the electronic expansion valve adjustment.

[0109] The above Figure 3 and Figure 4 The adjustment device of the electronic expansion valve in the embodiment of the present application is described in detail from the perspective of the modular functional entity, and the adjustment device of the electronic expansion valve in the embodiment of the present application is described in detail from the perspective of hardware processing.

[0110] Figure 5is a structural schematic diagram of an electronic expansion valve regulating device provided by an embodiment of the present application. The electronic expansion valve regulating device 500 can have a large difference due to different configurations or performances, and can include one or more central processing units (CPUs) 510 (for example, one or more processors) and a memory 520, and one or more storage media 530 (for example, one or more mass storage devices) storing application programs 533 or data 532. The memory 520 and the storage media 530 can be temporary storage or persistent storage. The programs stored in the storage media 530 can include one or more modules (not shown in the figure), and each module can include a series of instruction operations in the electronic expansion valve regulating device 500. Furthermore, the processor 510 can be configured to communicate with the storage media 530 and execute the series of instruction operations in the storage media 530 on the electronic expansion valve regulating device 500.

[0111] The electronic expansion valve regulating device 500 can further include one or more power supplies 540, one or more wired or wireless network interfaces 550, one or more input / output interfaces 560, and / or one or more operating systems 531, such as Windows Server, Mac OS X, Unix, Linux, FreeBSD, and the like. Those skilled in the art can understand that the electronic expansion valve regulating device 500 can further include other components, and the components shown in the figure are not intended to limit the electronic expansion valve regulating device 500. Figure 5 The electronic expansion valve regulating device structure shown in the figure does not constitute a limitation on the electronic expansion valve regulating device, and can include more or fewer components than shown in the figure, or combine certain components, or different component arrangements.

[0112] The present application also provides an electronic expansion valve regulating device, which includes a memory and a processor, the memory stores computer readable instructions, and the computer readable instructions are executed by the processor to make the processor execute the steps of the electronic expansion valve regulating method in the above embodiments. The present application also provides a computer readable storage medium, which can be a non-volatile computer readable storage medium or a volatile computer readable storage medium, and the computer readable storage medium stores instructions, and the instructions make the computer execute the steps of the electronic expansion valve regulating method when the instructions are run on the computer.

[0113] Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working processes of the above-described system, device and unit can refer to the corresponding processes in the foregoing method embodiments, which will not be described herein.

[0114] The integrated unit, if implemented in the form of a software function unit and sold or used as an independent product, can be stored in a computer readable storage medium. Based on such understanding, the technical solutions of the present application or the entire or part of the technical solutions that essentially contribute to the prior art can be embodied in the form of a software product. The computer software product is stored in a storage medium and includes a plurality of instructions for causing a computer device (which can be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the method described in the various embodiments of the present application. The aforementioned storage medium includes: a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk, and various media that can store program codes.

[0115] The above-described embodiments are merely used to illustrate the technical solutions of the present application, rather than limit the same; even though the present application has been described in detail with reference to the foregoing embodiments, those ordinarily skilled in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacements for some of the technical features; and these modifications or replacements do not cause the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A method of regulating an electronic expansion valve, characterized by, The adjusting method of the electronic expansion valve comprises: obtaining the superheat degree of the current cycle of the electronic expansion valve to obtain a current superheat degree; calculating the difference between the current superheat degree and a preset superheat degree to obtain a target superheat degree difference; determining whether the target superheat degree difference meets a preset condition; if the target superheat degree difference meets the preset condition, shortening a preset adjusting cycle of the electronic expansion valve to obtain a target adjusting cycle; adjusting the electronic expansion valve through the target adjusting cycle; the preset condition is that the target superheat degree difference is greater than a first preset difference and has a duration greater than a preset duration, or the target superheat degree difference is less than a second preset difference and has a duration greater than the preset duration; the determination of whether the target superheat degree difference meets the preset condition comprises: determining whether the target superheat degree difference is greater than the first preset difference and has a duration greater than the preset duration, if yes, it is determined that the target superheat degree difference meets the preset condition, if no, it is determined whether the target superheat degree difference is less than the second preset difference and has a duration greater than the preset duration, if yes, it is determined that the target superheat degree difference meets the preset condition, if no, it is determined that the target superheat degree difference does not meet the preset condition.

2. The method of regulating an electronic expansion valve according to claim 1, characterized in that, After adjusting the electronic expansion valve through the target adjusting cycle, it further comprises: determining an initial variable of the electronic expansion valve through the target superheat degree difference, the initial variable being an adjusting parameter of the electronic expansion valve; obtaining compressor frequency adjusting information and cycle information of a historical variable; determining a state of the electronic expansion valve through the initial variable, the compressor adjusting information and the cycle information of the historical variable to obtain a target state, the target state being a continuously increasing state, a continuously decreasing state, an unstable state or a normal state; correspondingly adjusting the electronic expansion valve based on the target state.

3. The method of regulating an electronic expansion valve according to claim 2, characterized in that, The corresponding adjustment of the electronic expansion valve based on the target state comprises: if the electronic expansion valve is in the continuously increasing state or the continuously decreasing state, determining a target compensation amount through the target superheat degree difference and obtaining a target variable, and adjusting the electronic expansion valve based on the target compensation amount and the target variable; if the electronic expansion valve is in the unstable state, performing stability adjustment on the electronic expansion valve.

4. The method of regulating an electronic expansion valve according to claim 2, wherein The determination of the state of the electronic expansion valve through the initial variable, the compressor adjusting information and the cycle information of the historical variable to obtain a target state comprises: calculating through the initial variable and the compressor adjusting information to obtain a target variable; performing operation processing on the cycle information of the historical variable through the target variable to obtain processed cycle information; determining the state of the electronic expansion valve through the processed cycle information to obtain a target state.

5. The method of regulating an electronic expansion valve according to claim 4, characterized in that, The stability adjustment of the electronic expansion valve if the electronic expansion valve is in the unstable state comprises: reducing the target variable to half of the original to obtain a first variable; adjusting the electronic expansion valve through the first variable.

6. The method of regulating an electronic expansion valve according to claim 4, wherein The stability regulation is performed on the electronic expansion valve if the electronic expansion valve is in the unstable state, and the method further includes: performing extension processing on the target regulation period to obtain a first extended period; regulating the electronic expansion valve through the first extended period.

7. The method of regulating an electronic expansion valve according to claim 4, wherein The stability regulation is performed on the electronic expansion valve if the electronic expansion valve is in the unstable state, and the method further includes: reducing the target variable to 1 / 2 of the original value to obtain a second variable; performing extension processing on the target regulation period to obtain a second extended period; regulating the electronic expansion valve through the second variable and the second extended period.

8. A regulating device for an electronic expansion valve, characterized in that The regulating device of the electronic expansion valve includes: a first acquisition module, configured to acquire a superheat degree of a current period of the electronic expansion valve to obtain a current superheat degree; a calculation module, configured to calculate a difference between the current superheat degree and a preset superheat degree to obtain a target superheat degree difference; a judgment module, configured to judge whether the target superheat degree difference meets a preset condition; a processing module, configured to shorten a preset regulation period of the electronic expansion valve to obtain a target regulation period if the target superheat degree difference meets the preset condition; a first regulation module, configured to regulate the electronic expansion valve through the target regulation period; The preset condition is that the target superheat degree difference is greater than a first preset difference and has a duration greater than a preset duration, or the target superheat degree difference is less than a second preset difference and has a duration greater than the preset duration. The judgment module is specifically configured to judge whether the target superheat degree difference is greater than the first preset difference and has a duration greater than the preset duration, and if yes, it is determined that the target superheat degree difference meets the preset condition, and if no, it is judged whether the target superheat degree difference is less than the second preset difference and has a duration greater than the preset duration, and if yes, it is determined that the target superheat degree difference meets the preset condition, and if no, it is determined that the target superheat degree difference does not meet the preset condition.

9. A regulating device for an electronic expansion valve, characterized in that The regulating device of the electronic expansion valve includes a memory and at least one processor, and the memory stores instructions; The at least one processor invokes the instructions in the memory to enable the regulating device of the electronic expansion valve to perform the regulating method of the electronic expansion valve according to any one of claims 1-7.

10. A computer-readable storage medium having stored thereon instructions, the instructions comprising, The instructions are executed by the processor to implement the regulating method of the electronic expansion valve according to any one of claims 1-7.

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