Energy-saving refrigeration equipment and refrigeration control method

Abstract

The present application provides an energy-saving refrigeration device and a refrigeration control method, which determines the pressure fluctuation characteristics of the inner cavity of the energy-saving refrigeration compressor when the working condition is switched by monitoring the compression refrigeration data of the energy-saving refrigeration compressor in the working condition record when the working condition is switched; obtains the expansion and contraction rate of the energy-saving refrigeration compressor when performing reversible cycle refrigeration, and determines the pressure loss of the working condition switching during reversible cycle refrigeration according to the pressure gradient of the expansion and contraction rate and the compression refrigeration data; performs granular difference compensation for the switching energy consumption of the energy-saving refrigeration compressor when performing reversible cycle refrigeration through the pressure loss and pressure fluctuation characteristics, and obtains the energy consumption compensation parameters of the energy-saving refrigeration compressor when the working condition is switched; further, according to the energy consumption compensation parameters, controls the power compensation capacitor in the energy-saving air conditioner to adjust the compression power of the energy-saving refrigeration compressor. The scheme of the present application can realize the balanced adjustment of the switching efficiency of the energy-saving refrigeration compressor, thereby reducing the energy loss during the working condition switching.

Description

Technical Field

[0001] The present application relates to the technical field of energy-saving refrigeration equipment, and more specifically, to an energy-saving refrigeration equipment and a refrigeration control method. Background Art

[0002] Energy-saving air conditioners are air-conditioning equipment that emphasizes high efficiency and low energy consumption in design and manufacturing. Their purpose is to provide a comfortable indoor environment while minimizing energy consumption and reducing operating costs. Compared with traditional air conditioners, energy-saving air conditioners have significant energy efficiency advantages. By optimizing compressor design, improving refrigerant formulation, intelligent control system and more precise operating condition adjustment, they can consume less energy with the same cooling effect. The components of energy-saving air conditioners mainly include energy-saving refrigeration compressors, electronic expansion valves, high-efficiency heat exchangers, intelligent controllers and energy-saving fans.

[0003] In the application of energy-saving refrigeration compressors, the operating mode switching process is a key technical difficulty. Energy-saving refrigeration compressors are designed to reduce energy consumption by optimizing the refrigeration process. However, in actual operation, the operating mode switching process (such as switching from strong refrigeration mode to weak refrigeration mode) often leads to unstable performance of the energy-saving refrigeration compressor. This instability is mainly manifested in pressure fluctuations and drastic changes in energy consumption, which in turn affects the energy efficiency of the entire air-conditioning system. Since the operating characteristics of energy-saving refrigeration compressors under different operating conditions are different, their pressure fluctuations and energy efficiency losses are particularly significant during switching. In addition, the loss of pressure in the inner cavity of the energy-saving refrigeration compressor and the change in the expansion and contraction rate of the refrigerant during the operating mode switching will also lead to a decrease in energy efficiency, making it difficult to maintain the energy-saving effect. By balancing the switching efficiency of the energy-saving refrigeration compressor, it can be beneficial to reduce energy consumption losses, thereby improving the energy efficiency of energy-saving air conditioners. Therefore, how to achieve balanced adjustment of the switching efficiency of energy-saving refrigeration compressors, thereby reducing energy losses during operating mode switching, has become a difficult problem faced by the industry. Summary of the invention

[0004] The present application provides an energy-saving refrigeration device and a refrigeration control method, which can achieve balanced regulation of the switching efficiency of an energy-saving refrigeration compressor, thereby reducing energy loss when switching working conditions.

[0005] In a first aspect, the present application provides a refrigeration control method for an energy-saving refrigeration device, comprising the following steps:

[0006] Receiving an operating status instruction of an energy-saving air conditioner, and monitoring an operating status record of an energy-saving refrigeration compressor in the energy-saving air conditioner;

[0007] Determine the pressure fluctuation characteristics of the inner cavity of the energy-saving refrigeration compressor when the working condition is switched according to the compression refrigeration data of the energy-saving refrigeration compressor when the working condition is switched in the working condition record;

[0008] Acquire the expansion and contraction ratio of the energy-saving refrigeration compressor when performing reversible cycle refrigeration, and determine the pressure loss of the working state switching during the reversible cycle refrigeration according to the expansion and contraction ratio and the pressure gradient of the compression refrigeration data;

[0009] By using the pressure loss and the pressure fluctuation characteristics, granularity difference compensation is performed on the switching energy consumption of the working condition when the energy-saving refrigeration compressor performs reversible cycle refrigeration, so as to obtain the energy consumption compensation parameter of the energy-saving refrigeration compressor when the working condition is switched;

[0010] When the operating state instruction is interpreted as a switching operating state, the power compensation capacitor in the energy-saving air conditioner is controlled to adjust the compression power of the energy-saving refrigeration compressor according to the energy consumption compensation parameter.

[0011] Preferably, determining the pressure fluctuation characteristics of the inner cavity of the energy-saving refrigeration compressor when the working condition is switched according to the compression refrigeration data of the energy-saving refrigeration compressor when the working condition is switched in the working condition record specifically includes:

[0012] Determine a switching node when each operating mode of the energy-saving refrigeration compressor is switched;

[0013] Extracting compressed data segments before and after the energy-saving refrigeration compressor is switched at each switching node from the operating condition record, and then taking a set of all the extracted compressed data segments as compressed refrigeration data;

[0014] Determine the pressure fluctuation amount of the corresponding switching node according to each compression data segment in the compression refrigeration data;

[0015] All pressure fluctuations are described by information entropy characteristics to obtain the pressure fluctuation characteristics of the inner cavity of the energy-saving refrigeration compressor when the working condition is switched.

[0016] Preferably, determining the pressure loss of the working state switching during the reversible cycle refrigeration according to the expansion / contraction ratio and the pressure gradient of the compression refrigeration data specifically includes:

[0017] determining the expansion loss of the refrigerant in the energy-saving refrigeration compressor according to the expansion and contraction ratio;

[0018] Determining the pressure gradient loss of the energy-saving refrigeration compressor during the working state switching process according to the pressure gradient of the compression refrigeration data;

[0019] The pressure gradient loss is compensated by the expansion loss to obtain the pressure loss of the working state switching during the reversible cycle refrigeration.

[0020] Preferably, the granularity difference compensation is performed on the switching energy consumption of the energy-saving refrigeration compressor when performing reversible cycle refrigeration through the pressure loss and the pressure fluctuation characteristics, and the energy consumption compensation parameters of the energy-saving refrigeration compressor when switching the working condition specifically include:

[0021] Acquiring compression refrigeration data, and then determining the particle size difference coefficient of the energy-saving refrigeration compressor when the working condition is switched through the compression refrigeration data;

[0022] The particle size difference coefficient is compensated by the pressure loss and the pressure fluctuation characteristics to obtain a particle size compensation coefficient when the working condition is switched;

[0023] Based on the granularity compensation coefficient, the switching energy consumption of the energy-saving refrigeration compressor during reversible cycle refrigeration is fitted and compensated to obtain the energy consumption compensation parameter of the energy-saving refrigeration compressor during working mode switching.

[0024] Preferably, the energy-saving refrigeration compressor is a reversible frequency conversion compressor.

[0025] Preferably, the operating status instruction refers to an instruction issued by the control system according to the current operating status of the air-conditioning equipment.

[0026] Preferably, the power compensation capacitor is a dynamic compensation capacitor.

[0027] In a second aspect, the present application provides an energy-saving refrigeration device, the energy-saving refrigeration device includes a refrigeration control unit, and the refrigeration control unit includes:

[0028] A monitoring module, used to receive an operating status instruction of the energy-saving air conditioner and monitor the operating status record of the energy-saving refrigeration compressor in the energy-saving air conditioner;

[0029] A processing module, used to determine the pressure fluctuation characteristics of the inner cavity of the energy-saving refrigeration compressor when the working condition is switched according to the compression refrigeration data of the energy-saving refrigeration compressor when the working condition is switched in the working condition record;

[0030] The processing module is further used to obtain the expansion and contraction rate of the energy-saving refrigeration compressor when performing reversible cycle refrigeration, and determine the pressure loss of the working state switching during the reversible cycle refrigeration according to the expansion and contraction rate and the pressure gradient of the compression refrigeration data;

[0031] The processing module is further used to compensate the granularity difference of the switching energy consumption of the energy-saving refrigeration compressor when performing reversible cycle refrigeration through the pressure loss and the pressure fluctuation characteristics, so as to obtain the energy consumption compensation parameter of the energy-saving refrigeration compressor when the working condition is switched;

[0032] The execution module is used to control the power compensation capacitor in the energy-saving air conditioner to adjust the compression power of the energy-saving refrigeration compressor according to the energy consumption compensation parameter when the operating state instruction is interpreted as a switching operating state.

[0033] In a third aspect, the present application provides a computer device, comprising a memory and a processor, wherein the memory stores codes, and the processor is configured to obtain the codes and execute the above-mentioned refrigeration control method for energy-saving refrigeration equipment.

[0034] In a fourth aspect, the present application provides a computer-readable storage medium, wherein the computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the refrigeration control method for energy-saving refrigeration equipment is implemented.

[0035] The technical solution provided by the embodiments disclosed in this application has the following beneficial effects:

[0036] In an embodiment of the present application, an operating status instruction of an energy-saving air conditioner is first received, and the operating status record of the energy-saving refrigeration compressor in the energy-saving air conditioner is monitored; the pressure fluctuation characteristics of the inner cavity of the energy-saving refrigeration compressor when the operating status is switched are determined according to the compression refrigeration data of the energy-saving refrigeration compressor when the operating status is switched in the operating status record; the expansion and contraction rate of the energy-saving refrigeration compressor when performing reversible cycle refrigeration is obtained, and the pressure loss of the operating status switching during reversible cycle refrigeration is determined according to the expansion and contraction rate and the pressure gradient of the compression refrigeration data; the granular difference compensation is performed on the switching energy consumption of the energy-saving refrigeration compressor when performing reversible cycle refrigeration through the pressure loss and the pressure fluctuation characteristics, and the energy consumption compensation parameters of the energy-saving refrigeration compressor when the operating status is switched are obtained; when the operating status instruction is resolved as a switching operating condition, the power compensation capacitor in the energy-saving air conditioner is controlled to adjust the compression power of the energy-saving refrigeration compressor according to the energy consumption compensation parameters.

[0037] It can be seen that the present application performs granular compensation for the energy consumption of the energy-saving refrigeration compressor when switching the working state through the pressure loss and pressure fluctuation characteristics, and obtains the energy consumption compensation parameters, and then controls the power compensation capacitor in the energy-saving air conditioner to adjust the compression power of the energy-saving refrigeration compressor according to the energy consumption compensation parameters; wherein, the pressure loss of the energy-saving refrigeration compressor during reversible cycle refrigeration and the pressure fluctuation characteristics during the working state switching of the energy-saving refrigeration compressor are used to perform granular compensation for the energy consumption of switching working states to obtain the energy consumption compensation parameters, and the energy consumption compensation parameters refer to the compensation amount of the energy-saving refrigeration compressor when switching from one working state to another working state during the reversible cycle refrigeration process, and the uncertainty of the internal pressure fluctuation and the pressure loss when the working state of the energy-saving refrigeration compressor is switched is used to perform granular compensation for the differences between the working states at different switching nodes, in order to compensate for the energy loss caused by pressure fluctuations and pressure losses during the working state switching process. The quantification of the energy consumption compensation parameters enables the control system of the energy-saving refrigeration compressor to more accurately evaluate the impact of operating condition switching on energy consumption, and reduce these impacts through the compensation mechanism, thereby improving the description accuracy of the switching energy consumption loss during the operating condition switching of the energy-saving refrigeration compressor; then, the power compensation strategy of the power compensation capacitor in the energy-saving air conditioner is adjusted by the quantified energy consumption compensation parameters, and the compression power of the energy-saving refrigeration compressor is further compensated for according to the adjusted power compensation strategy, so that the energy-saving refrigeration compressor can balance the energy consumption when switching between different operating conditions, reduce the invalid power consumption of the existing refrigeration control strategy, realize the balanced regulation of the switching energy consumption of the energy-saving refrigeration compressor, and reduce the energy loss when the operating condition is switched; in summary, the present application scheme can realize the balanced regulation of the switching efficiency of the energy-saving refrigeration compressor, thereby reducing the energy loss when the operating condition is switched. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 is an exemplary flow chart of a refrigeration control method for an energy-saving refrigeration device according to some embodiments of the present application;

[0039] Figure 2 is a schematic diagram of the refrigeration working principle shown in some embodiments of the present application;

[0040] Figure 3 is a schematic diagram of a process for determining pressure loss according to some embodiments of the present application;

[0041] Figure 4 is a schematic diagram of exemplary software modules of a refrigeration control unit according to some embodiments of the present application;

[0042] Figure 5 It is a structural schematic diagram of a computer device for implementing a refrigeration control method for energy-saving refrigeration equipment according to some embodiments of the present application. DETAILED DESCRIPTION

[0043] In order to better understand the above technical solution, the above technical solution will be described in detail below in conjunction with the accompanying drawings and specific implementation methods. Figure 1 , which is an exemplary flow chart of a refrigeration control method for an energy-saving refrigeration device according to some embodiments of the present application. The refrigeration control method 100 for an energy-saving refrigeration device mainly includes the following steps:

[0044] In step 101, an operating state instruction of an energy-saving air conditioner is received, and an operating state record of an energy-saving refrigeration compressor in the energy-saving air conditioner is monitored.

[0045] It should be noted that energy-saving refrigeration compressors transfer heat by compressing refrigerant during the refrigeration process, thereby reducing the temperature of the space. Figure 2 As shown, it is a schematic diagram of the refrigeration working principle in some embodiments of the present application, and its refrigeration working principle includes four main steps: first, the low-pressure gaseous refrigerant absorbs heat in the evaporator and evaporates into gas; then, the gas is sucked into and compressed by the compressor to increase the pressure and temperature; then, the high-pressure and high-temperature gas flows through the condenser to release heat and condense into liquid; finally, the liquid refrigerant returns to the evaporator after reducing the pressure and temperature through the expansion valve, and absorbs heat and circulates again; the present application improves the energy efficiency of the overall system by optimizing the circulation strategy of the refrigerant in the compressor, adjusting the compression process and reducing energy loss; it should also be noted that the energy-saving refrigeration compressor described in the present application is a reversible frequency conversion compressor.

[0046] It should also be noted that the operating status instruction in this application refers to the instruction issued by the control system based on the current operating status of the air-conditioning equipment. It reflects the specific working mode and status information when the energy-saving air conditioner is running. The operating status instruction is a signal received by the control module, which indicates the current operating status of the energy-saving air conditioner.

[0047] In specific implementation, monitoring the operating condition record of the energy-saving refrigeration compressor in the energy-saving air conditioner can be achieved in the following manner, namely: the operating condition data of the target energy-saving refrigeration compressor in the energy-saving air conditioner in a specified time period can be collected through a designated sensor according to a preset sampling frequency, and the collected operating condition data can be arranged into a time series in chronological order, and the arranged time series can be used as the operating condition record.

[0048] It should be noted that the energy-saving refrigeration compressor in the present application is a reversible cycle compressor; the designated sensors may include: temperature sensors, pressure sensors, flow sensors and power sensors; the sampling frequency has a value range of 60Hz to 100Hz. In other embodiments, the sampling frequency has a value range of other intervals, which is not limited here; the designated time period refers to the time period corresponding to the past 3 months to the current moment. In other embodiments, the designated time period may also be other time intervals, which are not limited here; in addition, it should be noted that the data type in the operating condition record in the present application is numerical data, which includes: temperature data, pressure data, refrigerant flow data and power data.

[0049] In step 102, the pressure fluctuation characteristics of the inner cavity of the energy-saving refrigeration compressor when the working condition is switched are determined according to the compression refrigeration data of the energy-saving refrigeration compressor when the working condition is switched in the working condition record.

[0050] In some embodiments, determining the pressure fluctuation characteristics of the inner cavity of the energy-saving refrigeration compressor when the working condition is switched according to the compression refrigeration data of the energy-saving refrigeration compressor when the working condition is switched in the working condition record can be achieved by the following steps:

[0051] Determine a switching node when each operating mode of the energy-saving refrigeration compressor is switched;

[0052] Extracting compressed data segments before and after the energy-saving refrigeration compressor is switched at each switching node from the operating condition record, and then taking a set of all the extracted compressed data segments as compressed refrigeration data;

[0053] Determine the pressure fluctuation amount of the corresponding switching node according to each compression data segment in the compression refrigeration data;

[0054] All pressure fluctuations are described by information entropy characteristics to obtain the pressure fluctuation characteristics of the inner cavity of the energy-saving refrigeration compressor when the working condition is switched.

[0055] In specific implementation, determining the switching node when the energy-saving refrigeration compressor switches each working condition can be achieved in the following manner, namely: initializing a node detection model, the node detection model can be obtained based on convolutional neural network training, and then inputting the working condition operation data in the working condition record into the node detection model, and then using the nodes output by the node detection model as the switching nodes when the target energy-saving refrigeration compressor switches the working condition. It should be noted that the node detection model in the present application is used to detect the switching nodes when the working condition of the energy-saving refrigeration compressor switches. The node detection model can be obtained through preprocessing, feature extraction, model training and verification of a large amount of working condition operation data. The detection model, the algorithm structure in the model training process can adopt a convolutional neural network. In other embodiments, other existing algorithm structures can also be used, which are not limited here; the compressed data segments before and after the switching of the energy-saving refrigeration compressor at each switching node are intercepted from the operating condition record, and then the set consisting of all the intercepted compressed data segments is used as the compressed refrigeration data. It can be implemented in the following way, namely: the operating condition operation data corresponding to the switching from each switching node to the end of the switching is intercepted from the operating condition record, and then the intercepted operating condition operation data are all used as compressed data segments, and then the set consisting of all the intercepted compressed data segments is used as the compressed refrigeration data.

[0056] In addition, determining the pressure fluctuation amount of the corresponding switching node according to each compressed data segment in the compressed refrigeration data can be implemented in the following manner, namely: selecting a switching node as the designated switching node, obtaining the compressed data segment of the designated switching node, and taking the difference between the maximum pressure and the minimum pressure in the compressed data segment of the designated switching node as the pressure fluctuation amount of the designated switching node, and continuing to determine the pressure fluctuation amounts of the remaining switching nodes. In other embodiments, the standard deviation of the pressure in the compressed data segment corresponding to the switching node can also be taken as the pressure fluctuation amount of the switching node, which is not limited here; performing information entropy feature description on all pressure fluctuation amounts to obtain the pressure fluctuation feature when the operating condition is switched, and then taking the pressure fluctuation feature as the pressure fluctuation feature of the inner cavity of the energy-saving refrigeration compressor when the operating condition is switched. This can be implemented in the following manner, namely: all pressure fluctuation amounts can be substituted into the information entropy calculation formula, and then taking the calculated information entropy as the pressure fluctuation feature of the inner cavity of the energy-saving refrigeration compressor when the operating condition is switched.

[0057] It should be noted that the pressure fluctuation amount in the present application is an indicator for measuring the degree of internal pressure fluctuation before and after the operating mode of the energy-saving refrigeration compressor is switched. The larger the pressure fluctuation amount, the greater the degree of internal pressure fluctuation before and after the operating mode of the energy-saving refrigeration compressor is switched, and the smaller the pressure fluctuation amount, the smaller the degree of internal pressure fluctuation before and after the operating mode of the energy-saving refrigeration compressor is switched; in addition, the pressure fluctuation characteristic in the present application is an indicator for measuring the uncertainty of internal pressure fluctuation when the operating mode of the energy-saving refrigeration compressor is switched. The larger the pressure fluctuation characteristic, the greater the uncertainty of the internal pressure fluctuation when the operating mode of the energy-saving refrigeration compressor is switched, and the smaller the pressure fluctuation characteristic, the smaller the uncertainty of the internal pressure fluctuation when the operating mode of the energy-saving refrigeration compressor is switched.

[0058] In step 103, the expansion and contraction ratio of the energy-saving refrigeration compressor when performing reversible cycle refrigeration is obtained, and the pressure loss of the working state switching during the reversible cycle refrigeration is determined according to the expansion and contraction ratio and the pressure gradient of the compression refrigeration data.

[0059] It should be noted that the expansion and contraction rate is an indicator to measure the degree of change in the volume of the refrigerant during the reversible cycle refrigeration process of the energy-saving refrigeration compressor. It reflects the ratio of the volume change of the refrigerant during the expansion process. Preferably, the expansion and contraction rate of the energy-saving refrigeration compressor during the reversible cycle refrigeration can be obtained in the following way, namely: the pressure and temperature changes of the refrigerant can be monitored by a pressure sensor and a temperature sensor to obtain the pressure data and temperature data of the refrigerant, and then the pressure data and temperature data of the refrigerant are substituted into the ideal gas state equation, and then the volume change rate of the refrigerant is calculated using the ideal gas state equation, and the volume change rate is used as the expansion and contraction rate.

[0060] In some embodiments, reference Figure 3 As shown, this figure is a schematic diagram of a process for determining pressure loss in some embodiments of the present application. In this embodiment, the pressure loss of the working state switching during the reversible cycle refrigeration is determined according to the expansion and contraction rate and the pressure gradient of the compression refrigeration data, which can be achieved by the following steps:

[0061] In step 1031, the expansion loss of the refrigerant in the energy-saving refrigeration compressor is determined according to the expansion and contraction ratio;

[0062] In step 1032, the pressure gradient loss of the energy-saving refrigeration compressor during the working state switching process is determined according to the pressure gradient of the compression refrigeration data;

[0063] In step 1033, the pressure gradient loss is compensated by the expansion loss to obtain the pressure loss of the working state switching during the reversible cycle refrigeration.

[0064] In specific implementation, the expansion loss of the refrigerant in the energy-saving refrigeration compressor can be determined according to the expansion and contraction rate in the following manner, namely: the volume change rate of the refrigerant (i.e., the expansion and contraction rate) can be substituted into the van der Waals equation, and then the ideal temperature change value of the refrigerant during the expansion process is calculated by the van der Waals equation, and then the difference between the ideal temperature change value and the temperature change value obtained by monitoring is used as the expansion loss of the refrigerant in the energy-saving refrigeration compressor.

[0065] It should be noted that the expansion loss in this application refers to the energy loss caused by the increase in volume and decrease in pressure of the refrigerant during the expansion process. This loss will affect the overall efficiency of the refrigeration system and is an important parameter for evaluating and optimizing the performance of the refrigeration cycle.

[0066] In specific implementation, determining the pressure gradient loss of the energy-saving refrigeration compressor during the operating condition switching process based on the pressure gradient of the compressed refrigeration data can be achieved in the following manner, namely: selecting a compressed data segment from the compressed refrigeration data as the designated compressed data segment, and then calculating the difference between all adjacent pressure data in the designated compressed data segment, and then using the standard deviation of all differences as the pressure standard deviation, and then using the natural exponential of the opposite number of the pressure standard deviation as the pressure gradient loss in the designated compressed data segment, and continuing to determine the pressure gradient loss in the remaining compressed data segments, and finally using the average value of the pressure gradient loss in all compressed data segments as the pressure gradient loss of the target energy-saving refrigeration compressor during the operating condition switching process.

[0067] It should be noted that the pressure gradient in the present application represents the rate of pressure change during the operation of the energy-saving refrigeration compressor; in addition, the pressure gradient loss in the present application refers to the energy loss caused by the pressure change (i.e., pressure gradient) caused by the compression of the refrigerant. This loss usually occurs in the process of the refrigerant being compressed from a low-pressure state to a high-pressure state. Due to the incomplete reversibility of the compression process, the refrigerant will produce a certain pressure loss when flowing inside the compressor.

[0068] In specific implementation, the pressure gradient loss is compensated by the expansion loss, and the pressure loss during reversible cycle refrigeration can be achieved in the following way, that is: the sum of the expansion loss and the pressure gradient loss can be used as the pressure loss during reversible cycle refrigeration. In the present application, the pressure gradient loss is compensated by the expansion loss, and the energy loss of the refrigerant expansion process is taken into account for the pressure loss in the working process of the energy-saving refrigeration compressor, which can improve the quantification accuracy of the pressure loss of the energy-saving refrigeration compressor during reversible cycle refrigeration.

[0069] It should be noted that the pressure loss in the present application is an indicator for measuring the degree of pressure loss of the energy-saving refrigeration compressor during the reversible cycle refrigeration process. The greater the pressure loss, the greater the degree of pressure loss of the energy-saving refrigeration compressor during the reversible cycle refrigeration process. The smaller the pressure loss, the smaller the degree of pressure loss of the energy-saving refrigeration compressor during the reversible cycle refrigeration process.

[0070] In step 104, the pressure loss and the pressure fluctuation characteristics are used to compensate for the granularity difference of the switching energy consumption of the energy-saving refrigeration compressor when performing reversible cycle refrigeration, so as to obtain the energy consumption compensation parameters of the energy-saving refrigeration compressor when the working condition is switched.

[0071] In some embodiments, the granularity difference compensation is performed on the switching energy consumption of the energy-saving refrigeration compressor when the reversible cycle refrigeration is performed by the pressure loss and the pressure fluctuation characteristics, and the energy consumption compensation parameter of the energy-saving refrigeration compressor when the working condition is switched can be achieved by the following steps:

[0072] Acquiring compression refrigeration data, and then determining the particle size difference coefficient of the energy-saving refrigeration compressor when the working condition is switched through the compression refrigeration data;

[0073] The particle size difference coefficient is compensated by the pressure loss and the pressure fluctuation characteristics to obtain a particle size compensation coefficient when the working condition is switched;

[0074] Based on the granularity compensation coefficient, the switching energy consumption of the energy-saving refrigeration compressor during reversible cycle refrigeration is fitted and compensated to obtain the energy consumption compensation parameter of the energy-saving refrigeration compressor during working mode switching.

[0075] In specific implementation, the compression refrigeration data is obtained, and then the particle size difference coefficient of the energy-saving refrigeration compressor when the operating condition is switched is determined through the compression refrigeration data. This can be achieved in the following manner, namely: the compression refrigeration data can be obtained from the above-mentioned embodiment, and then two compressed data segments are arbitrarily selected from the compression refrigeration data, and the Euclidean distances of the temperature data, pressure data and power data in the two compressed data segments are calculated respectively, and the difference between the two compressed data segments is calculated as the average value of all Euclidean distances, and then the difference between all compressed data segments is obtained, and then the average value of all differences is used as the particle size difference coefficient of the target energy-saving refrigeration compressor when the operating condition is switched.

[0076] It should be noted that the particle size difference coefficient in the present application is an indicator for measuring the degree of difference in operating conditions between different switching nodes during the compression refrigeration process. The particle size difference coefficient helps to quantify the differences between operating conditions at different switching nodes, and can provide basic data for subsequent compensation and optimization, thereby reducing energy consumption fluctuations caused by operating condition switching.

[0077] In specific implementation, the particle size difference coefficient is compensated by the pressure loss and the pressure fluctuation characteristics, and the particle size compensation coefficient when the operating condition is switched can be achieved in the following way, namely: the natural exponential of the inverse of the product of the pressure loss and the pressure fluctuation entropy can be used as a compensation factor, and then the product of the compensation factor and the particle size difference coefficient is used as the particle size compensation coefficient, wherein the particle size compensation coefficient is the compensated particle size difference coefficient. It should be noted that the present application can reduce the energy descriptive loss caused by pressure changes and improve the operating efficiency of the system by compensating for the particle size difference coefficient, thereby being able to more accurately reflect the energy consumption under actual operating conditions, wherein the compensation for pressure loss and pressure fluctuation entropy takes into account the dynamic changes in actual operation, making the compensation coefficient more accurate and reducing the additional energy consumption caused by operating condition switching.

[0078] In addition, based on the granularity compensation coefficient, the switching energy consumption of the energy-saving refrigeration compressor during reversible cycle refrigeration is fitted and compensated, and the energy consumption compensation parameter of the energy-saving refrigeration compressor during the working condition switching can be obtained. The following method can be used to achieve it, namely: initialize a compensation model, use the working condition operation data of the energy-saving refrigeration compressor during reversible cycle refrigeration as the input parameter of the compensation model, and use the granularity compensation coefficient as the constraint parameter of the compensation model, and then use the compensation model to fit the switching energy consumption of the energy-saving refrigeration compressor during reversible cycle refrigeration, and then use the compensation value of the output switching energy consumption as the energy consumption compensation parameter of the energy-saving refrigeration compressor during the working condition switching; it should be noted that the compensation model in the present application is a machine learning model for calculating the energy consumption or performance loss generated when the working condition is switched during the reversible cycle refrigeration process. The algorithm framework of the compensation model can adopt a support vector regression algorithm. In other embodiments, the algorithm framework of the compensation model can also adopt other algorithm structures, which are not limited here; it should also be noted that in the present application, the granularity compensation coefficient is used to constrain the granularity difference between different working conditions to ensure that the compensation model accurately reflects the actual energy loss during the switching process.

[0079] It should be noted that the energy consumption compensation parameter in the present application refers to the compensation amount of energy consumption when the energy-saving refrigeration compressor switches from one operating condition to another operating condition during the reversible cycle refrigeration process.

[0080] In step 105, when the operating state instruction is interpreted as a switching operating state, the power compensation capacitor in the energy-saving air conditioner is controlled to adjust the compression power of the energy-saving refrigeration compressor according to the energy consumption compensation parameter.

[0081] It should be noted that the operating status instruction in the present application can generally be parsed into a normal working state and an operating status switching state. In other embodiments, the operating status instruction can also be parsed into other states, which are not limited here.

[0082] In some embodiments, according to the energy consumption compensation parameter, controlling the power compensation capacitor in the energy-saving air conditioner to adjust the compression power of the energy-saving refrigeration compressor can be achieved by the following steps:

[0083] Obtaining a power compensation strategy for a power compensation capacitor in the energy-saving air conditioner;

[0084] Iteratively adjusting the power compensation strategy by using the energy consumption compensation parameter to obtain an adjusted power compensation strategy;

[0085] The adjusted power compensation strategy is used as the execution strategy of the power compensation capacitor, and then the energy consumption of the compression power of the energy-saving refrigeration compressor is compensated by the power compensation capacitor.

[0086] In specific implementation, first, a dynamic programming algorithm in the prior art (for example, a Markov decision framework) can be used, and the energy consumption compensation parameter can be used as the state transfer amount at different stages in the working condition switching process in the dynamic programming algorithm. The dynamic programming algorithm is used to perform a target evaluation of the efficiency of the power compensation strategy. The solution of the target evaluation of the dynamic programming algorithm can be used as an adjustment value for the efficiency adjustment, and then the adjustment value for the efficiency adjustment is used as an optimization parameter for the power compensation strategy to complete the optimization of the power compensation strategy and obtain an adjusted power compensation strategy; then, the adjusted power compensation strategy can be executed through a power compensation capacitor to obtain a power compensation value, and the compression power of the energy-saving refrigeration compressor can be compensated by the power compensation capacitor according to the power compensation value, that is, when the power compensation value is greater than 0, the compression power is increased by the power compensation value units, and when the power compensation value is less than 0, the compression power is decreased by the power compensation value units, and when the power compensation value is equal to 0, the power compensation capacitor is not processed.

[0087] It should be noted that the power compensation capacitor in the present application is a dynamic compensation capacitor; it should also be noted that in the present application, the compression power of the energy-saving refrigeration compressor is adjusted according to the energy consumption compensation parameters, so that the energy-saving refrigeration compressor can maintain a higher energy efficiency during the switching process of different working conditions, reduce unnecessary energy waste, and thus achieve the balance and minimization of the overall energy consumption; it should also be noted that the present application scheme optimizes and adjusts the power compensation strategy, so that the energy-saving refrigeration compressor can balance the energy consumption when switching between different working conditions, reduce invalid power consumption, and ultimately maximize the overall energy-saving effect. This balanced adjustment not only improves the operating efficiency of the system, but also extends the service life of the equipment and reduces operating costs.

[0088] On the other hand, in some embodiments, the present application provides an energy-saving refrigeration device, the energy-saving refrigeration device includes a refrigeration control unit, referring to Figure 4, which is a schematic diagram of exemplary software modules of a refrigeration control unit according to some embodiments of the present application, the refrigeration control unit 400 includes: a monitoring module 401, a processing module 402 and an execution module 403, which are described as follows:

[0089] Monitoring module 401, in the present application, the monitoring module 401 is mainly used to receive the working state instruction of the energy-saving air conditioner, and monitor the working state record of the energy-saving refrigeration compressor in the energy-saving air conditioner;

[0090] Processing module 402, in the present application, the processing module 402 is used to determine the pressure fluctuation characteristics of the inner cavity of the energy-saving refrigeration compressor when the working condition is switched according to the compression refrigeration data of the energy-saving refrigeration compressor in the working condition record when the working condition is switched;

[0091] The processing module 402 in the present application is also used to obtain the expansion and contraction rate of the energy-saving refrigeration compressor when performing reversible cycle refrigeration, and determine the pressure loss of the working state switching during the reversible cycle refrigeration according to the expansion and contraction rate and the pressure gradient of the compression refrigeration data;

[0092] The processing module 402 in the present application is also used to compensate the granularity difference of the switching energy consumption of the energy-saving refrigeration compressor when performing reversible cycle refrigeration through the pressure loss and the pressure fluctuation characteristics, and obtain the energy consumption compensation parameter of the energy-saving refrigeration compressor when the working condition is switched;

[0093] Execution module 403, in the present application, the execution module 403 is mainly used to control the power compensation capacitor in the energy-saving air conditioner to adjust the compression power of the energy-saving refrigeration compressor according to the energy consumption compensation parameter when the operating state instruction is resolved as a switching operating state.

[0094] In addition, the present application also provides a computer device, which includes a memory and a processor, wherein the memory stores codes, and the processor is configured to obtain the codes and execute the above-mentioned refrigeration control method for energy-saving refrigeration equipment.

[0095] In some embodiments, reference Figure 5 , which is a schematic diagram of the structure of a computer device for implementing a refrigeration control method for an energy-saving refrigeration device according to some embodiments of the present application. The refrigeration control method for an energy-saving refrigeration device in the above embodiment can be Figure 5 The computer device 500 shown in the figure is implemented, and the computer device 500 includes at least one processor 501, a communication bus 502, a memory 503 and at least one communication interface 504.

[0096] The processor 501 may be a general-purpose central processing unit (CPU) or an application-specific integrated circuit (ASIC).

[0097] The communication bus 502 may be used to transmit information between the above-mentioned components.

[0098] The memory 503 may be a read-only memory (ROM) or other types of static storage devices that can store static information and instructions, a random access memory (RAM) or other types of dynamic storage devices that can store information and instructions, or an electrically erasable programmable read-only memory (EEPROM), a compact disc read-only memory (CD-ROM) or other optical disc storage, optical disc storage (including compressed optical disc, laser disc, optical disc, digital versatile disc, Blu-ray disc, etc.), a disk or other magnetic storage device, or any other medium that can be used to carry or store the desired program code in the form of instructions or data structures and can be accessed by a computer, but is not limited thereto. The memory 503 may exist independently and be connected to the processor 501 via the communication bus 502. The memory 503 may also be integrated with the processor 501.

[0099] The memory 503 is used to store the program code for executing the solution of the present application, and the execution is controlled by the processor 501. The processor 501 is used to execute the program code stored in the memory 503. The program code may include one or more software modules. The refrigeration control method for energy-saving refrigeration equipment in the above embodiment can be implemented by the processor 501 and one or more software modules in the program code in the memory 503.

[0100] The communication interface 504 uses any transceiver or other device for communicating with other devices or communication networks, such as Ethernet, radio access network (RAN), wireless local area networks (WLAN), etc.

[0101] In a specific implementation, as an embodiment, a computer device may include multiple processors, each of which may be a single-CPU processor or a multi-CPU processor. The processor here may refer to one or more devices, circuits, and / or processing cores for processing data (e.g., computer program instructions).

[0102] The above-mentioned computer device can be a general-purpose computer device or a special-purpose computer device. In a specific implementation, the computer device can be a desktop computer, a portable computer, a network server, a personal digital assistant (PDA), a mobile phone, a tablet computer, a wireless terminal device, a communication device or an embedded device. The embodiment of the present application does not limit the type of computer device.

[0103] In addition, the present application also provides a computer-readable storage medium, wherein the computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the refrigeration control method for energy-saving refrigeration equipment described above is implemented.

[0104] Although the preferred embodiments of the present application have been described, those skilled in the art may make other changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications falling within the scope of the present application.

[0105] Obviously, those skilled in the art can make various changes and modifications to the present application without departing from the spirit and scope of the present application. Thus, if these modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is also intended to include these modifications and variations.

Claims

1. A refrigeration control method for energy-saving refrigeration equipment, characterized in that: The steps include: Receiving an operating status instruction of an energy-saving air conditioner, and monitoring an operating status record of an energy-saving refrigeration compressor in the energy-saving air conditioner; Determine the pressure fluctuation characteristics of the inner cavity of the energy-saving refrigeration compressor when the working condition is switched according to the compression refrigeration data of the energy-saving refrigeration compressor when the working condition is switched in the working condition record; Obtaining the expansion and contraction rate of the energy-saving refrigeration compressor when performing reversible cycle refrigeration, and determining the pressure loss of the working state switching during the reversible cycle refrigeration according to the expansion and contraction rate and the pressure gradient of the compression refrigeration data, wherein the pressure gradient represents the rate of pressure change during the working process of the energy-saving refrigeration compressor; By using the pressure loss and the pressure fluctuation characteristics, granularity difference compensation is performed on the switching energy consumption of the working condition when the energy-saving refrigeration compressor performs reversible cycle refrigeration, so as to obtain the energy consumption compensation parameter of the energy-saving refrigeration compressor when the working condition is switched; When the working condition state instruction is interpreted as a switching working condition, the power compensation capacitor in the energy-saving air conditioner is controlled to adjust the compression power of the energy-saving refrigeration compressor according to the energy consumption compensation parameter; Wherein, determining the pressure loss of the working state switching during the reversible cycle refrigeration according to the expansion and contraction rate and the pressure gradient of the compression refrigeration data specifically includes: determining the expansion loss of the refrigerant in the energy-saving refrigeration compressor according to the expansion and contraction ratio; Determining the pressure gradient loss of the energy-saving refrigeration compressor during the working state switching process according to the pressure gradient of the compression refrigeration data; The pressure gradient loss is compensated by the expansion loss to obtain the pressure loss of the working state switching during the reversible cycle refrigeration; Among them, the granularity difference compensation is performed on the switching energy consumption of the energy-saving refrigeration compressor when performing reversible cycle refrigeration through the pressure loss and the pressure fluctuation characteristics, and the energy consumption compensation parameters of the energy-saving refrigeration compressor when switching the working condition specifically include: Acquiring compression refrigeration data, and then determining the particle size difference coefficient of the energy-saving refrigeration compressor when the working condition is switched through the compression refrigeration data; The particle size difference coefficient is compensated by the pressure loss and the pressure fluctuation characteristics to obtain a particle size compensation coefficient when the working condition is switched; Based on the granularity compensation coefficient, the switching energy consumption of the energy-saving refrigeration compressor during reversible cycle refrigeration is fitted and compensated to obtain the energy consumption compensation parameter of the energy-saving refrigeration compressor during working mode switching.

2. The method according to claim 1, characterized in that Determining the pressure fluctuation characteristics of the inner cavity of the energy-saving refrigeration compressor when the working condition is switched according to the compression refrigeration data of the energy-saving refrigeration compressor when the working condition is switched in the working condition record specifically includes: Determine a switching node when each operating mode of the energy-saving refrigeration compressor is switched; Extracting compressed data segments before and after the energy-saving refrigeration compressor is switched at each switching node from the operating condition record, and then taking a set of all the extracted compressed data segments as compressed refrigeration data; Determine the pressure fluctuation amount of the corresponding switching node according to each compression data segment in the compression refrigeration data; All pressure fluctuations are described by information entropy characteristics to obtain the pressure fluctuation characteristics of the inner cavity of the energy-saving refrigeration compressor when the working condition is switched.

3. The method according to claim 1, characterized in that The energy-saving refrigeration compressor is a reversible frequency conversion compressor.

4. The method according to claim 1, characterized in that The operating state instruction refers to an instruction issued by the control system according to the current operating state of the air-conditioning equipment.

5. The method according to claim 1, characterized in that The power compensation capacitor is a dynamic compensation capacitor.

6. An energy-saving refrigeration device, which adopts the method according to any one of claims 1 to 5 to perform refrigeration control, and the energy-saving refrigeration device includes a refrigeration control unit, characterized in that: The refrigeration control unit comprises: A monitoring module, used to receive an operating status instruction of the energy-saving air conditioner and monitor the operating status record of the energy-saving refrigeration compressor in the energy-saving air conditioner; A processing module, used to determine the pressure fluctuation characteristics of the inner cavity of the energy-saving refrigeration compressor when the working condition is switched according to the compression refrigeration data of the energy-saving refrigeration compressor when the working condition is switched in the working condition record; The processing module is further used to obtain the expansion and contraction rate of the energy-saving refrigeration compressor when performing reversible cycle refrigeration, and determine the pressure loss of the working state switching during the reversible cycle refrigeration according to the expansion and contraction rate and the pressure gradient of the compression refrigeration data; The processing module is further used to compensate the granularity difference of the switching energy consumption of the energy-saving refrigeration compressor when performing reversible cycle refrigeration through the pressure loss and the pressure fluctuation characteristics, so as to obtain the energy consumption compensation parameter of the energy-saving refrigeration compressor when the working condition is switched; The execution module is used to control the power compensation capacitor in the energy-saving air conditioner to adjust the compression power of the energy-saving refrigeration compressor according to the energy consumption compensation parameter when the operating state instruction is interpreted as a switching operating state.

7. A computer device, comprising a memory and a processor, wherein the memory stores a code, characterized in that: The processor is configured to obtain the code and execute the refrigeration control method for energy-saving refrigeration equipment according to any one of claims 1 to 5.

8. A computer-readable storage medium storing a computer program, characterized in that: When the computer program is executed by a processor, the refrigeration control method for energy-saving refrigeration equipment according to any one of claims 1 to 5 is implemented.

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