Adjusting method and device of electronic expansion valve, equipment and storage medium

Abstract

The invention relates to the technical field of electronic expansion valve control, discloses an adjusting method, device and equipment of an electronic expansion valve and a storage medium, and aims to shorten the adjusting period of the electronic expansion valve so as to improve the adjusting efficiency of the electronic expansion valve. The adjusting method of the electronic expansion valve comprises the steps that the current superheat degree of the electronic expansion valve is obtained, the target superheat degree difference value is determined through the current superheat degree and the preset superheat degree, when the target superheat degree difference value meets the preset condition, the preset adjusting period of the electronic expansion valve is shortened, and the target adjusting period is obtained; the electronic expansion valve is adjusted through the target adjusting period, and the adjusting efficiency of the electronic expansion valve is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of electronic expansion valve control, and in particular to an adjustment method, device, equipment and storage medium of an electronic expansion valve. Background Art

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

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

[0004] In the existing technology, the electronic expansion valve is adjusted by variables, resulting in low adjustment efficiency. Summary of the invention

[0005] The present invention provides an electronic expansion valve regulation method, device, equipment and storage medium, which improve the regulation efficiency of the electronic expansion valve by shortening the regulation period of the electronic expansion valve.

[0006] A first aspect of the present invention provides a method for adjusting an electronic expansion valve, comprising: obtaining the superheat of the current cycle of the electronic expansion valve to obtain the current superheat; calculating the difference between the current superheat and a preset superheat to obtain a target superheat difference; judging whether the target superheat difference meets a preset condition; if the target superheat difference meets the preset condition, shortening the preset adjustment cycle of the electronic expansion valve to obtain a target adjustment cycle; and adjusting the electronic expansion valve according to the target adjustment cycle.

[0007] In a feasible implementation manner, after adjusting the electronic expansion valve through the target adjustment cycle, it also includes: determining the initial variable of the electronic expansion valve through the target superheat difference, the initial variable is the adjustment parameter of the electronic expansion valve; obtaining the compressor frequency adjustment information and the periodic information of the historical variables; determining the state of the electronic expansion valve through the initial variable, the compressor adjustment information and the periodic information of the historical variables to obtain the target state, 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 accordingly based on the target state.

[0008] In a feasible implementation manner, the corresponding adjustment of the electronic expansion valve based on the target state includes: if the electronic expansion valve is in the continuous increase state or the continuous decrease state, determining the target compensation amount through the target superheat difference, and obtaining the target variable, and determining the adjustment of 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.

[0009] In a feasible implementation manner, the state of the electronic expansion valve is determined by the initial variable, the compressor adjustment information and the periodic information of the historical variable to obtain a target state, including: performing calculations by using the initial variable and the compressor adjustment information to obtain a target variable; performing calculations on the periodic information of the historical variable by using the target variable to obtain processed periodic information; and determining the state of the electronic expansion valve by using the processed periodic information to obtain a target state.

[0010] In a feasible implementation, if the electronic expansion valve is in the unstable state, the electronic expansion valve is subjected to stability adjustment, including: reducing the target variable to half of the original value to obtain a first variable; and adjusting the electronic expansion valve by means of the first variable.

[0011] In a feasible implementation manner, if the electronic expansion valve is in the unstable state, the stability of the electronic expansion valve is adjusted, and the method also includes: extending the target adjustment period to obtain a first extended period; and adjusting the electronic expansion valve through the first extended period.

[0012] In a feasible implementation, if the electronic expansion valve is in the unstable state, the stability of the electronic expansion valve is adjusted, and the method also includes: reducing the target variable to 1 / 2 of the original value to obtain a second variable; extending the target adjustment period to obtain a second extended period; and adjusting the electronic expansion valve through the second variable and the second extended period.

[0013] A second aspect of the present invention provides an adjustment device for an electronic expansion valve, comprising: a first acquisition module, used to obtain the superheat of the current cycle of the electronic expansion valve to obtain the current superheat; a calculation module, used to calculate the difference between the current superheat and the preset superheat to obtain a target superheat difference; a judgment module, used to judge whether the target superheat difference meets the preset conditions; a processing module, used to shorten the preset adjustment cycle of the electronic expansion valve if the target superheat difference meets the preset conditions to obtain a target adjustment cycle; a first adjustment module, used to adjust the electronic expansion valve according to the target adjustment cycle.

[0014] In a feasible embodiment, the regulating device of the electronic expansion valve also includes: a first determination module, used to determine the initial variable of the electronic expansion valve through the target superheat difference, and the initial variable is the regulating parameter of the electronic expansion valve; a second acquisition module, used to obtain the compressor frequency regulation information and the periodic information of the historical variables; the second determination module, used to determine the state of the electronic expansion valve through the initial variable, the compressor regulation information and the periodic information of the historical variables, and obtain the target state, and the target state is a continuously increasing state, a continuously decreasing state, an unstable state or a normal state; a second regulating module, used to perform corresponding adjustments to the electronic expansion valve based on the target state.

[0015] In a feasible embodiment, the second adjustment module includes: a first adjustment unit, which is used to determine the target compensation amount through the target superheat difference and obtain the target variable if the electronic expansion valve is in the continuous increase state or the continuous decrease state, and determine the adjustment of the electronic expansion valve based on the target compensation amount and the target variable; and a second adjustment unit, which is used to perform stability adjustment on the electronic expansion valve if the electronic expansion valve is in the unstable state.

[0016] In a feasible implementation manner, the second determination module is specifically used to: obtain a target variable by calculating through the initial variable and the compressor adjustment information; perform calculation processing on the periodic information of the historical variable through the target variable to obtain processed periodic information; determine the state of the electronic expansion valve through the processed periodic information to obtain a target state.

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

[0018] In a feasible implementation manner, the second regulating unit is further specifically configured to: extend the target regulating period to obtain a first extended period; and regulate the electronic expansion valve through the first extended period.

[0019] In a feasible implementation manner, the second regulating unit is further specifically used for: reducing the target variable to half of the original value to obtain a second variable; extending the target regulating cycle to obtain a second extended cycle; and regulating the electronic expansion valve through the second variable and the second extended cycle.

[0020] The third aspect of the present invention provides an electronic expansion valve adjustment device, comprising: a memory and at least one processor, wherein the memory stores instructions; the at least one processor calls the instructions in the memory so that the electronic expansion valve adjustment device executes the above-mentioned electronic expansion valve adjustment method.

[0021] A fourth aspect of the present invention provides a computer-readable storage medium, wherein the computer-readable storage medium stores instructions, which, when executed on a computer, enable the computer to execute the above-mentioned method for adjusting an electronic expansion valve.

[0022] In the technical solution provided by the present invention, the superheat of the current cycle of the electronic expansion valve is obtained to obtain the current superheat; the difference between the current superheat and the preset superheat is calculated to obtain the target superheat difference; it is determined whether the target superheat difference meets the preset conditions; if the target superheat difference meets the preset conditions, the preset adjustment cycle of the electronic expansion valve is shortened to obtain the target adjustment cycle; the electronic expansion valve is adjusted according to the target adjustment cycle. In the embodiment of the present invention, the current superheat of the electronic expansion valve is obtained, the target superheat difference is determined by the current superheat and the preset superheat, and when the target superheat difference meets the preset conditions, the preset adjustment cycle of the electronic expansion valve is shortened to obtain the target adjustment cycle, and the electronic expansion valve is adjusted according to the target adjustment cycle, thereby improving the adjustment efficiency of the electronic expansion valve. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 A schematic diagram of an embodiment of a method for adjusting an electronic expansion valve in an embodiment of the present invention;

[0024] Figure 2 It is a schematic diagram of another embodiment of the method for adjusting the electronic expansion valve in an embodiment of the present invention;

[0025] Figure 3 A schematic diagram of an embodiment of a regulating device for an electronic expansion valve in an embodiment of the present invention;

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

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

[0028] The embodiments of the present invention provide a method, device, equipment and storage medium for regulating an electronic expansion valve, which improve the regulation efficiency of the electronic expansion valve by shortening the regulation period of the electronic expansion valve.

[0029] The terms "first", "second", "third", "fourth", etc. (if any) in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments described herein can be implemented in an order other than that illustrated or described herein. In addition, the terms "including" or "having" and any variations thereof are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0030] It is understandable that the execution subject of the present invention may be a regulating device of an electronic expansion valve, or a terminal or a server, which is not limited here. The embodiment of the present invention is described by taking a server as the execution subject as an example.

[0031] For ease of understanding, the specific process of the embodiment of the present invention is described below. Figure 1 , an embodiment of the method for adjusting the electronic expansion valve in the embodiment of the present invention includes:

[0032] 101. Obtain the superheat of the current cycle of the electronic expansion valve to obtain the current superheat;

[0033] The return air temperature and evaporation temperature of the current cycle are obtained. The return air temperature indicates the measured liquid temperature at the compressor suction port, and the evaporation temperature indicates the measured liquid temperature when evaporating in the evaporator. The current superheat of the electronic expansion valve is determined by the return air temperature and the evaporation temperature. The return air temperature is obtained by detecting the liquid temperature at the compressor suction port through the first temperature detector, and the evaporation temperature is obtained by detecting the liquid temperature when evaporating in the evaporator through the second temperature detector. The current superheat is obtained by subtracting the evaporation temperature from the return air temperature.

[0034] 102. Calculate the difference between the current superheat and the preset superheat to obtain a target superheat difference;

[0035] Obtain the calculation data storage space, determine whether the calculation data storage space is larger than the preset storage space, if the calculation data storage space is less than or equal to the preset storage space, use the preset compression algorithm to compress the calculation data to reduce the space occupied by the calculation data, calculate the difference between the current superheat and the preset superheat, obtain the target superheat difference, and store the target superheat difference in the calculation data space.

[0036] 103. Determine whether the target superheat difference meets the preset conditions;

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

[0038] Determine whether the superheat difference is greater than the first preset difference and the duration is greater than the preset time. If so, determine that the target superheat difference meets the preset conditions. If not, determine whether the target superheat difference is less than the second preset difference and the duration is greater than the preset time. If so, determine that the target superheat difference meets the preset conditions. If not, determine that the target superheat difference does not meet the preset conditions.

[0039] For example, if the first preset difference is 1°C, the second preset difference is -1°C, and the preset time is 3 minutes, then when the target superheat difference is greater than 1°C, and the target superheat difference is greater than 1°C for a duration greater than 3 minutes, it is determined that the target superheat difference meets the preset conditions; if the target superheat difference is less than -1°C, and the target superheat difference is less than -1°C for a duration greater than 3 minutes, it is determined that the target superheat difference meets the preset conditions; if -1°C ≤ target superheat difference ≤ 1°C, it is determined that the target superheat difference does not meet the preset conditions.

[0040] 104. If the target superheat difference meets the preset condition, the preset adjustment period of the electronic expansion valve is shortened to obtain the target adjustment period;

[0041] When the target superheat difference meets the preset conditions, the preset adjustment period of the electronic expansion valve is shortened to half of the original one through the preset formula, and 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 through the preset formula to obtain target adjustment period = 1min / 2 = 0.5min = 30s. If the target superheat difference does not meet the preset conditions, the electronic expansion valve is adjusted according to the preset adjustment period.

[0042] 105. The electronic expansion valve is adjusted through a target adjustment cycle.

[0043] After the electronic expansion valve is adjusted through the target adjustment cycle, the periodic information of the historical variables is obtained, the target variable is determined through the target superheat difference, and whether the electronic expansion valve is in a stable state is determined through the periodic information of the historical variables and the target variable. When the electronic expansion valve is in an unstable state, the electronic expansion valve is adjusted through a preset adjustment method to improve the stability of the electronic expansion valve adjustment.

[0044] In an embodiment of the present invention, by obtaining the current superheat of the electronic expansion valve, a target superheat difference is determined by the current superheat and a preset superheat. When the target superheat difference meets a preset condition, the preset adjustment cycle of the electronic expansion valve is shortened to obtain a target adjustment cycle. The electronic expansion valve is adjusted according to the target adjustment cycle, thereby improving the adjustment efficiency of the electronic expansion valve.

[0045] See also Figure 2 Another embodiment of the method for adjusting the electronic expansion valve in the embodiment of the present invention includes:

[0046] 201. Obtain the superheat of the current cycle of the electronic expansion valve to obtain the current superheat;

[0047] 202. Calculate the difference between the current superheat and the preset superheat to obtain a target superheat difference;

[0048] 203. Determine whether the target superheat difference meets the preset conditions;

[0049] 204. If the target superheat difference meets the preset condition, shorten the preset adjustment period of the electronic expansion valve to obtain the target adjustment period;

[0050] 205. Regulating the electronic expansion valve through a target regulation cycle;

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

[0052] 206. Determine an initial variable of the electronic expansion valve according to the target superheat difference, where the initial variable is an adjustment parameter of the electronic expansion valve;

[0053] If the target superheat difference is greater than the preset first threshold, the 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 the target superheat difference is greater than the preset second threshold, the 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 the target superheat difference is greater than the preset third threshold, the 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 the target superheat difference is greater than the preset fourth threshold, the 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, the fifth adjustment step is determined to obtain the initial variable.

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

[0055] It should be noted that in this embodiment, in the variables and the related adjustments of the variables, positive values ​​indicate an increase, and negative values ​​indicate a decrease. For example, when the initial variable is 4, it indicates an increase of 4 degrees of opening, and when the initial variable is -2, it indicates a decrease of 2 degrees of opening.

[0056] 207. Obtain compressor frequency adjustment information and period information of historical variables;

[0057] The ambient temperature is obtained, and the preset ambient temperature is subtracted from the ambient temperature to obtain the 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 increase is determined 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 reduce the frequency and the frequency of the compressor decrease is determined 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 perform frequency increase or decrease processing to obtain the compressor frequency adjustment information. The periodic information of the historical variables includes the cumulative number of adjustment cycles, the number of continuous increase cycles, the number of continuous decrease cycles, the cumulative number of increase cycles, and the cumulative number of decrease cycles.

[0058] 208. Determine the state of the electronic expansion valve through the initial variable, the compressor adjustment information and the periodic information of the historical variable to obtain a target state, where the target state is a continuously increasing state, a continuously decreasing state, an unstable state or a normal state;

[0059] The target variable is obtained by calculating the initial variable and the compressor adjustment information; the periodic information of the historical variable is processed by the target variable to obtain the processed periodic information; the state of the electronic expansion valve is determined by the processed periodic information to obtain the target state.

[0060] The target variable is obtained by calculating through the initial variable and the compressor adjustment information: determining the value of the rising or falling frequency of the compressor through the compressor frequency information to obtain the target frequency value; calculating through the target frequency value and the first compensation coefficient to obtain the first additional variable; if the compressor frequency information indicates that the compressor frequency increases, the initial variable is increased through the first additional variable to obtain the target variable; if the compressor frequency information indicates that the compressor frequency decreases, the initial variable is decreased through the first additional variable to obtain the target variable.

[0061] When the frequency of the compressor increases or decreases to AHz, the target frequency value is A, and the first additional variable is calculated by the first preset formula. The first preset formula is: the first additional variable = A*K1, K1 is the first compensation coefficient, K1 = 1. If the compressor frequency increases, the initial variable is added with the first additional variable to obtain the target variable. If the compressor frequency decreases, 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 continuous increase cycle and the cumulative increase cycle number in the cycle information of the historical variable are both increased by 1 to obtain the processed cycle information, which includes the cumulative adjustment cycle number, the processed continuous increase cycle number, the continuous decrease cycle number, the processed cumulative increase cycle number and the cumulative decrease cycle number. When the processed continuous increase cycle number is greater than the preset first cycle number, the target state of the electronic expansion valve is determined, and the target state is the continuous increase state. If the cumulative adjustment cycle number is greater than the preset second cycle number, and the sum of the processed cumulative increase cycle number and the cumulative decrease cycle number is greater than 1 / 2 of the cumulative cycle number, the target state of the electronic expansion valve is determined, and the target state is the unstable state, and the preset second cycle number is twice the preset first cycle number.

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

[0064] 209. Adjust the electronic expansion valve accordingly based on the target state.

[0065] If the electronic expansion valve is in a continuously increasing or decreasing state, the target compensation amount is determined by the target superheat difference, 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] Target compensation amount=K2*target superheat difference, where K2 is the second compensation coefficient. The second compensation coefficient is set according to specific circumstances. For example, the second compensation coefficient is set to 1.

[0067] If the electronic expansion valve is in a continuously increasing state, the target variable is added to the target compensation variable to obtain the 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 continuously decreasing state, the target compensation variable is subtracted from the target variable to obtain the 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, a target cycle number is obtained from the continuous increase cycle number and the continuous decrease cycle number, where the target cycle number is the continuous increase cycle number or the continuous decrease cycle number indicating a non-zero value; the target cycle number is set to zero, and corresponding processing is performed on data other than the target cycle number in the historical variable cycle information.

[0069] When the target variable is greater than zero, determine whether the continuous adjustment cycle number is zero. If the continuous adjustment cycle number is not zero, determine the continuous adjustment cycle number as the target cycle number, set the continuous adjustment cycle number to zero, increase the cumulative adjustment cycle number, the continuous adjustment cycle number and the cumulative adjustment cycle number by 1, and do not process the cumulative adjustment cycle number; when the target variable is less than zero, determine whether the continuous adjustment cycle number is zero. If the continuous adjustment cycle number is not zero, determine the continuous adjustment cycle number as the target cycle number, set the continuous adjustment cycle number to zero, increase the cumulative cycle number, the continuous adjustment cycle number and the cumulative adjustment cycle number by 1, and do not process the cumulative adjustment cycle number; when When the target variable is zero, determine whether there is a non-zero continuous increase cycle number or a non-zero continuous decrease cycle number in the cycle information of the historical variable. If there is a non-zero continuous increase cycle number, the continuous increase cycle number is determined as the target cycle number, and the continuous increase cycle number is reset to 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 non-zero continuous decrease cycle number, the continuous decrease cycle number is determined as the target cycle number, and the continuous decrease cycle number is reset to 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.

[0070] If the electronic expansion valve is in a continuously increasing state, the cumulative number of adjustment cycles, the number of continuous increasing cycles and the cumulative number of increasing cycles will be increased by 1, and the number of continuous decreasing cycles and the cumulative number of decreasing cycles will not be processed; if the electronic expansion valve is in a continuously decreasing state, the cumulative number of adjustment cycles, the number of continuous decreasing cycles and the cumulative number of decreasing cycles will be increased by 1, and the number of continuous increasing cycles and the cumulative number of increasing cycles will not be processed.

[0071] If the electronic expansion valve is in an unstable state, the electronic expansion valve can be adjusted as follows: 1. Reduce the target variable to half of the original value to obtain the first variable; adjust the electronic expansion valve by the first variable. For example, if the target variable is 4, then reduce the target variable 4 to half of the original value to obtain the first variable. If the first variable is 2, then increase the electronic expansion valve by 2 gears. In this adjustment case, in the process of calculating the target variable by using the initial variable and the compressor adjustment information, when the compressor frequency increases or decreases by AHz, the second additional variable is calculated by the second preset formula, and the second preset formula is: second additional variable = A*3*K1.

[0072] 2. Extend the target adjustment cycle to obtain a first extended cycle; adjust the electronic expansion valve through the first extended cycle. For example, extend the target adjustment cycle to 4 times the original to obtain the first extended cycle. If the target adjustment cycle is 30s, the first extended cycle is 2min, and then the electronic expansion valve is adjusted with a cycle of 2min. In this adjustment case, in the process of calculating the target variable through the initial variable and the compressor adjustment information, when the compressor frequency increases or decreases AHz, the second additional variable is calculated through the second preset formula, and the second preset formula is: second additional variable = A*3*K.

[0073] 3. Reduce the target variable to 1 / 2 of the original value to obtain the second variable; extend the target adjustment cycle to obtain the second extended cycle; adjust the electronic expansion valve through the second variable and the second extended cycle. For example, if the target variable is -4, the target adjustment cycle is extended to twice the original value, and the target adjustment cycle is 30s, then reduce the target variable -4 to 1 / 2 of the original value to obtain the second variable, and the second variable is -2. Since the target adjustment cycle is 30s, the second extended cycle is 1min, and the electronic expansion valve is adjusted down by 2 gears, and then the electronic expansion valve is adjusted in a cycle of 2min. In this adjustment case, if the compressor frequency changes, the unstable state is exited.

[0074] If the electronic expansion valve is not in an unstable state, and the sum of the cumulative number of times of increasing the value and the cumulative number of times of decreasing the value accounts for less than or equal to 50% of the total number of cycles, the cumulative number of adjustment cycles, the number of continuous increasing cycles, the number of continuous decreasing cycles, the cumulative number of increasing cycles and the cumulative number of decreasing cycles are reset to zero.

[0075] If the electronic expansion valve is in an unstable state, when the sum of the cumulative number of times the valve is increased and the cumulative number of times the valve is decreased accounts for less than 30% of the total number of cycles, the valve will exit the unstable state and reset the cumulative number of adjustment cycles, the number of continuous cycles of increased adjustment, the number of continuous cycles of decreased adjustment, the cumulative number of cycles of increased adjustment and the cumulative number of cycles of decreased adjustment to zero.

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

[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 adjusted up for N / 2 consecutive cycles; 4. The electronic expansion valve is adjusted down for N / 2 consecutive cycles.

[0078] In an embodiment of the present invention, by obtaining the current superheat of the electronic expansion valve, a target superheat difference is determined by the current superheat and a preset superheat, and when the target superheat difference meets a preset condition, the preset adjustment period of the electronic expansion valve is shortened to obtain a target adjustment period, and the electronic expansion valve is adjusted according to the target adjustment period, thereby improving the adjustment efficiency of the electronic expansion valve, and determining the initial variable of the electronic expansion valve according to the target superheat difference; obtaining the compressor frequency adjustment information and the periodic information of the historical variables; judging whether the electronic expansion valve is in an unstable state according to the initial variables, the compressor adjustment information and the periodic information of the historical variables; if the electronic expansion valve is in an unstable state, adjusting the electronic expansion valve accordingly; judging the stability of the electronic expansion valve after improving the adjustment efficiency of the electronic expansion valve, and adjusting the electronic expansion valve in an unstable state accordingly, thereby improving the stability of the electronic expansion valve adjustment.

[0079] The above describes the adjustment method of the electronic expansion valve in the embodiment of the present invention. The following describes the adjustment device of the electronic expansion valve in the embodiment of the present invention. Figure 3 In one embodiment of the present invention, an electronic expansion valve regulating device comprises:

[0080] The first acquisition module 301 is used to acquire the superheat degree of the electronic expansion valve in the current cycle to obtain the current superheat degree;

[0081] A calculation module 302 is used to calculate the difference between the current superheat and the preset superheat to obtain a target superheat difference;

[0082] The judgment module 303 is used to judge whether the target superheat difference meets the preset conditions;

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

[0084] The first regulating module 305 is used to regulate the electronic expansion valve through a target regulating cycle.

[0085] In an embodiment of the present invention, the current superheat of the electronic expansion valve is obtained, and a target superheat difference is determined by the current superheat and a preset superheat. When the target superheat difference meets a preset condition, the preset adjustment cycle of the electronic expansion valve is shortened to obtain a target adjustment cycle. The electronic expansion valve is adjusted according to the target adjustment cycle, thereby improving the adjustment efficiency of the electronic expansion valve.

[0086] See also Figure 4 Another embodiment of the regulating device of the electronic expansion valve in the embodiment of the present invention includes:

[0087] The first acquisition module 301 is used to acquire the superheat degree of the electronic expansion valve in the current cycle to obtain the current superheat degree;

[0088] A calculation module 302 is used to calculate the difference between the current superheat and the preset superheat to obtain a target superheat difference;

[0089] The judgment module 303 is used to judge whether the target superheat difference meets the preset conditions;

[0090] The processing module 304 is used to shorten the preset adjustment period of the electronic expansion valve to obtain the target adjustment period if the target superheat difference meets the preset condition;

[0091] The first regulating module 305 is used to regulate the electronic expansion valve through a target regulating cycle.

[0092] Optionally, the regulating device of the electronic expansion valve further includes:

[0093] A first determination module 306 is used to determine an initial variable of the electronic expansion valve according to a target superheat difference, where the initial variable is an adjustment parameter of the electronic expansion valve;

[0094] The second acquisition module 307 is used to acquire the compressor frequency adjustment information and the period information of the historical variables;

[0095] The second determination module 308 is used to determine the state of the electronic expansion valve through the initial variable, the compressor adjustment information and the periodic information of the historical variable, and obtain the target state, which is a continuous increase state, a continuous decrease state, an unstable state or a normal state;

[0096] The second regulating module 309 is used to perform corresponding regulation on the electronic expansion valve based on the target state.

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

[0098] The first regulating unit 3091 is used to determine the target compensation amount through the heat difference value and obtain the target variable if the electronic expansion valve is in a continuously increasing state or a continuously decreasing state, and to determine the regulation of the electronic expansion valve based on the target compensation amount and the target variable;

[0099] The second regulating unit 3092 is used to regulate the stability of the electronic expansion valve if the electronic expansion valve is in an unstable state.

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

[0101] The target variable is obtained by calculating the initial variable and the compressor adjustment information; the periodic information of the historical variable is processed by the target variable to obtain the processed periodic information; the state of the electronic expansion valve is determined by the processed periodic information to obtain the target state.

[0102] Optionally, the second adjustment unit 3092 may be specifically configured to:

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

[0104] Optionally, the second adjusting unit 3092 may also be specifically configured to:

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

[0106] Optionally, the second adjusting unit 3092 may also be specifically configured to:

[0107] The target variable is reduced to 1 / 2 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 by the second variable and the second extended period.

[0108] In an embodiment of the present invention, by obtaining the current superheat of the electronic expansion valve, a target superheat difference is determined by the current superheat and a preset superheat, and when the target superheat difference meets a preset condition, the preset adjustment period of the electronic expansion valve is shortened to obtain a target adjustment period, and the electronic expansion valve is adjusted according to the target adjustment period, thereby improving the adjustment efficiency of the electronic expansion valve, and determining the initial variable of the electronic expansion valve according to the target superheat difference; obtaining the compressor frequency adjustment information and the periodic information of the historical variables; judging whether the electronic expansion valve is in an unstable state according to the initial variables, the compressor adjustment information and the periodic information of the historical variables; if the electronic expansion valve is in an unstable state, adjusting the electronic expansion valve accordingly; judging the stability of the electronic expansion valve after improving the adjustment efficiency of the electronic expansion valve, and adjusting the electronic expansion valve in an unstable state accordingly, thereby improving the stability of the electronic expansion valve adjustment.

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

[0110] Figure 5: is a schematic diagram of the structure of an electronic expansion valve regulating device provided in an embodiment of the present invention. The electronic expansion valve regulating device 500 may have relatively large differences due to different configurations or performances, and may include one or more processors (central processing units, CPU) 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. Among them, the memory 520 and the storage medium 530 can be short-term storage or permanent storage. The program stored in the storage medium 530 may include one or more modules (not shown in the figure), and each module may include a series of instruction operations in the electronic expansion valve regulating device 500. Furthermore, the processor 510 may be configured to communicate with the storage medium 530 to execute a series of instruction operations in the storage medium 530 on the electronic expansion valve regulating device 500.

[0111] The electronic expansion valve regulating device 500 may further include one or more power supplies 540, one or more wired or wireless network interfaces 550, one or more input and output interfaces 560, and / or one or more operating systems 531, such as Windows Serve, Mac OS X, Unix, Linux, FreeBSD, etc. It will be appreciated by those skilled in the art that Figure 5 The structure of the regulating device of the electronic expansion valve shown does not constitute a limitation on the regulating device of the electronic expansion valve, and may include more or less components than shown in the figure, or a combination of certain components, or a different arrangement of components.

[0112] The present invention also provides an electronic expansion valve adjustment device, the computer device includes a memory and a processor, the memory stores computer-readable instructions, when the computer-readable instructions are executed by the processor, the processor executes the steps of the electronic expansion valve adjustment method in the above embodiments. The present invention also provides a computer-readable storage medium, the computer-readable storage medium can be a non-volatile computer-readable storage medium, the computer-readable storage medium can also be a volatile computer-readable storage medium, the computer-readable storage medium stores instructions, when the instructions are executed on the computer, the computer executes the steps of the electronic expansion valve adjustment method.

[0113] Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working processes of the systems, devices and units described above can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

[0114] If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention is essentially or the part that contributes to the prior art or all or part of the technical solution can be embodied in the form of a software product. The computer software product is stored in a storage medium, including a number of instructions to enable a computer device (which can be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the method described in each embodiment of the present invention. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (ROM), random access memory (RAM), disk or optical disk and other media that can store program codes.

[0115] As described above, the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features thereof may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A method for adjusting an electronic expansion valve, characterized in that: The regulating method of the electronic expansion valve comprises: Obtain the superheat of the current cycle of the electronic expansion valve to obtain the current superheat; Calculating the difference between the current superheat and the preset superheat to obtain a target superheat difference; Determining whether the target superheat difference meets a preset condition; If the target superheat difference meets the preset condition, shortening the preset adjustment period of the electronic expansion valve to obtain the target adjustment period; The electronic expansion valve is adjusted according to the target adjustment period.

2. The method for adjusting an electronic expansion valve according to claim 1, characterized in that: After the electronic expansion valve is adjusted through the target adjustment cycle, the method further includes: Determining an initial variable of the electronic expansion valve according to the target superheat difference, wherein the initial variable is an adjustment parameter of the electronic expansion valve; Obtain compressor frequency adjustment information and period information of historical variables; Determine the state of the electronic expansion valve by using the initial variable, the compressor adjustment information and the periodic 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; The electronic expansion valve is adjusted accordingly based on the target state.

3. The method for adjusting an electronic expansion valve according to claim 2, characterized in that: The adjusting the electronic expansion valve accordingly based on the target state includes: If the electronic expansion valve is in the continuous increasing state or the continuous decreasing state, a target compensation amount is determined by the target heat difference, a target variable is obtained, and 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 the unstable state, stability adjustment is performed on the electronic expansion valve.

4. The method for adjusting an electronic expansion valve according to claim 2, characterized in that: The step of determining the state of the electronic expansion valve by using the initial variable, the compressor adjustment information and the periodic information of the historical variable to obtain the target state includes: Calculating through the initial variables and the compressor adjustment information to obtain a target variable; Performing calculation processing on the period information of the historical variable through the target variable to obtain processed period information; The state of the electronic expansion valve is determined by the processed cycle information to obtain a target state.

5. The method for adjusting an electronic expansion valve according to claim 4, characterized in that: If the electronic expansion valve is in the unstable state, the stability of the electronic expansion valve is adjusted, including: Reducing the target variable to half of the original value to obtain a first variable; The electronic expansion valve is adjusted by the first variable.

6. The method for adjusting an electronic expansion valve according to claim 4, characterized in that: If the electronic expansion valve is in the unstable state, the stability of the electronic expansion valve is adjusted, and further includes: Extending the target adjustment period to obtain a first extended period; The electronic expansion valve is adjusted through the first extension period.

7. The method for adjusting an electronic expansion valve according to claim 4, characterized in that: If the electronic expansion valve is in the unstable state, the stability of the electronic expansion valve is adjusted, and further includes: The target variable is reduced to 1 / 2 of the original value to obtain a second variable; Extending the target adjustment period to obtain a second extended period; The electronic expansion valve is adjusted according to the second variable and the second extended period.

8. An electronic expansion valve regulating device, characterized in that: The regulating device of the electronic expansion valve comprises: A first acquisition module is used to acquire the superheat degree of the electronic expansion valve in the current cycle to obtain the current superheat degree; A calculation module, used for calculating the difference between the current superheat and the preset superheat to obtain a target superheat difference; A judgment module, used to judge whether the target superheat difference meets a preset condition; a processing module, configured to shorten a preset adjustment period of the electronic expansion valve to obtain a target adjustment period if the target superheat difference meets the preset condition; The first regulating module is used to regulate the electronic expansion valve through the target regulating cycle.

9. An electronic expansion valve regulating device, characterized in that: The regulating device of the electronic expansion valve comprises: a memory and at least one processor, wherein instructions are stored in the memory; The at least one processor calls the instruction in the memory so that the regulating device of the electronic expansion valve executes the regulating method of the electronic expansion valve as described in any one of claims 1-7.

10. A computer-readable storage medium having instructions stored thereon, characterized in that: When the instructions are executed by the processor, the regulating method of the electronic expansion valve as described in any one of claims 1-7 is implemented.

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