A compressor speed control method and system based on air cooling and heat exchange analysis

Abstract

The present invention relates to the technical field of compressor speed control, a compressor speed control method and system based on air heat exchange analysis, including: measuring the real-time temperature difference, obtaining the cooling process factor based on the user-set temperature and the initial indoor temperature, constructing a fast speed model according to the maximum compression speed, the cooling process factor and the standard cooling threshold, calculating the target injection flow according to the original injection flow, the standard injection flow, the real-time temperature difference and the flow gain factor, calculating the real-time compression power based on the injection pressure, the outflow pressure, the target injection flow and the compression efficiency, constructing a compressor speed model according to the fast speed model, the real-time compression power, the real-time compression torque and the cooling process factor, and regulating the compressor speed based on the compressor speed model. The present invention can improve the accuracy and automation of compressor speed control.

Description

Technical Field

[0001] The present invention relates to the technical field of compressor speed control, and in particular to a compressor speed control method and system based on air cooling and heat exchange analysis. Background Art

[0002] Compressors are indispensable equipment in many industrial and commercial systems. They can transport gas from low-pressure areas to high-pressure areas, ensuring that the gas can be effectively transported to where it is needed. For example, in air-conditioning systems, compressors are used to compress refrigerants to absorb and release heat to achieve the purpose of heating or cooling. The speed of the compressor can directly affect the working efficiency of the compressor. Accurately adjusting the speed of the compressor can increase the service life of the compressor and reduce energy consumption. Therefore, it is particularly important to control the speed of the compressor.

[0003] In the current compressor speed control, the compressor speed is usually fixed during operation, and is mainly based on a single pressure sensor to control the start and stop of the compressor to achieve compressor speed control. Although this method can achieve compressor speed control, the control process is not continuous, and since there is no real-time collection of multiple data, the accuracy of compressor speed control is low, and human intervention may be required during the control process. For example, when the air-conditioning system reaches the user-set temperature, it does not stop cooling in time, so the user needs to stop it manually, so the automation of this method needs to be improved. Summary of the invention

[0004] The present invention provides a compressor speed control method and system based on air cooling and heat exchange analysis, the main purpose of which is to improve the accuracy and automation of compressor speed control.

[0005] To achieve the above object, the present invention provides a compressor speed control method based on air cooling and heat exchange analysis, comprising:

[0006] According to the preset control time, the pre-built temperature sensor is used to perform air heat exchange analysis to obtain a real-time indoor temperature set and a real-time outdoor temperature set, and the real-time temperature difference is calculated based on the real-time indoor temperature set and the real-time outdoor temperature set, wherein the temperature sensor includes: an indoor temperature sensor and an outdoor temperature sensor;

[0007] Acquire a user-set temperature and an initial indoor temperature, and based on the user-set temperature and the initial indoor temperature, measure the indoor cooling process to obtain a cooling process factor;

[0008] According to the pre-built compressor, the maximum compression speed is obtained, and a fast speed model is constructed based on the maximum compression speed, the cooling process factor and the preset standard cooling threshold;

[0009] Measuring an original injection flow rate of a low-temperature gaseous refrigerant, and calculating an original flow rate difference according to the original injection flow rate and a preset standard injection flow rate;

[0010] Performing an integral transformation on the original flow difference to obtain a flow integral factor, and performing flow regulation on the original injection flow according to the flow integral factor, the real-time temperature difference and a preset flow gain factor to obtain a target injection flow;

[0011] Collecting the injection pressure and the outflow pressure of the compressor, calculating the compression pressure difference based on the injection pressure and the outflow pressure, and performing power calculation on the compressor according to the compression pressure difference, the target injection flow rate and the preset compression efficiency to obtain the real-time compression power;

[0012] The real-time compression torque of the compressor is measured, and a compressor speed model is constructed according to the rapid speed model, the real-time compression power, the real-time compression torque and the cooling process factor. Based on the compressor speed model, the compressor speed is regulated.

[0013] Optionally, the method of performing air cooling and heat exchange analysis using a pre-built temperature sensor according to a preset control duration to obtain a real-time indoor temperature set and a real-time outdoor temperature set includes:

[0014] Set the initial collection times and initial collection duration, wherein the initial collection times and initial collection duration are respectively expressed as:

[0015] ,

[0016] in, Indicates the initial collection times, Indicates the initial collection duration;

[0017] According to the initial collection times, the temperature sensor is used to collect the indoor and outdoor temperatures for a pth time to obtain the pth real-time indoor and outdoor temperatures, wherein the pth real-time indoor and outdoor temperatures include: the pth real-time indoor temperature and the pth real-time outdoor temperature;

[0018] The pth collection time of the pth indoor and outdoor temperature collection is recorded, the target collection time is set according to the initial collection time, and the cumulative collection time is calculated based on the pth collection time, wherein the target collection time and the cumulative collection time are respectively expressed as:

[0019] ,

[0020] in, Indicates the number of target acquisitions, Indicates the cumulative collection time. Indicates the pth collection duration;

[0021] Determine whether the accumulated acquisition time is less than the control time:

[0022] If the accumulated collection time is less than the control time, the initial collection times and the initial collection time are updated using the target collection times and the accumulated collection time respectively, and the process returns to the step of collecting the indoor and outdoor temperatures for the pth time using the temperature sensor according to the initial collection times to obtain the pth real-time indoor and outdoor temperatures;

[0023] If the accumulated collection time is not less than the control time, the pth real-time indoor and outdoor temperatures are summarized to obtain a real-time indoor temperature set and a real-time outdoor temperature set.

[0024] Optionally, the calculating the real-time temperature difference based on the real-time indoor temperature set and the real-time outdoor temperature set includes:

[0025] The real-time indoor temperature set and the real-time outdoor temperature set are respectively expressed as:

[0026] ,

[0027] in, represents the real-time indoor temperature set, Indicates the first real-time indoor temperature. represents the kth real-time indoor temperature, k represents the number of real-time indoor temperatures or real-time outdoor temperatures collected during the control period, represents the real-time outdoor temperature set, Indicates the first real-time outdoor temperature. represents the kth real-time outdoor temperature;

[0028] According to the real-time indoor temperature set and the real-time outdoor temperature set, the real-time temperature difference is calculated using the following formula:

[0029] ,

[0030] in, Indicates the real-time temperature difference. Indicates the real-time outdoor temperature. represents the real-time indoor temperature, i represents the sequence number of the real-time outdoor temperature in the real-time outdoor temperature set, represents the i-th real-time outdoor temperature, j represents the sequence number of the real-time indoor temperature set, represents the jth real-time indoor temperature, Represents the absolute value symbol.

[0031] Optionally, the indoor cooling process measurement is performed based on the user set temperature and the initial indoor temperature to obtain the cooling process factor, including:

[0032] According to the real-time indoor temperature, the user-set temperature and the initial indoor temperature, the cooling process factor is calculated using the following formula:

[0033] ,

[0034] in, represents the cooling process factor, represents the initial indoor temperature, Indicates the user set temperature.

[0035] Optionally, the constructing of a fast speed model based on the maximum compression speed, the cooling process factor and a preset standard cooling threshold value includes:

[0036] The current cooling time and the system startup time are obtained, and the current cooling duration is calculated based on the current cooling time and the system startup time, wherein the current cooling duration is expressed as:

[0037]

[0038] in, Indicates the current cooling time. Indicates the current cooling time. Indicates the system startup time;

[0039] According to the standard temperature drop threshold and the initial indoor temperature, the initial temperature difference is calculated, and based on the initial temperature difference and the maximum compression speed, the maximum time constant is searched in a preset temperature time table, wherein the temperature time relationship table is a relationship table between the temperature difference and the speed;

[0040] According to the maximum compression speed, standard temperature drop threshold, maximum time constant, current temperature drop duration and temperature drop process factor, the following fast speed model is constructed:

[0041] ,

[0042] in, represents the fast speed model, Indicates the maximum compression speed, represents the maximum time constant, represents the standard cooling threshold, and e represents the natural base.

[0043] Optionally, performing an integral transformation on the original flow difference to obtain a flow integral factor includes:

[0044] The original flow difference is expressed as:

[0045] ,

[0046] in, Indicates the original flow difference, represents the original injection flow, Indicates the standard injection flow rate;

[0047] Acquire the real-time internal temperature of the compressor, and acquire the real-time selected temperature by using a preset selection function according to the real-time indoor temperature and the real-time outdoor temperature;

[0048] According to the real-time internal temperature and the real-time selected temperature, a temperature disturbance parameter is set, wherein the temperature disturbance parameter is expressed as:

[0049] ,

[0050] ,

[0051] in, represents the temperature perturbation parameter, Indicates the real-time internal temperature. Indicates real-time selection of temperature. represents the selection function, and e represents the natural base;

[0052] Set the limit time value, and calculate the flow integration factor using the following formula based on the limit time value, temperature disturbance parameter and original flow difference:

[0053] ,

[0054] in, represents the flow integration factor, Indicates the limit time value, represents the integration variable.

[0055] Optionally, the flow rate adjustment of the original injection flow rate is performed according to the flow integration factor, the real-time temperature difference and the preset flow gain factor to obtain the target injection flow rate, including:

[0056] According to the flow integral factor, limit time value, real-time temperature difference and flow gain factor, the target injection flow rate is calculated using the following formula:

[0057] ,

[0058] in, Indicates the target injection flow, Represents the flow gain factor.

[0059] Optionally, the power calculation of the compressor is performed according to the compression pressure difference, the target injection flow rate and the preset compression efficiency to obtain the real-time compression power, including:

[0060] According to the compression pressure difference, target injection flow rate and compression efficiency, the real-time compression power is calculated using the following formula:

[0061] ,

[0062] in, represents the real-time compression power, represents the compression pressure difference, represents the compression efficiency, Indicates the injection pressure, Indicates the outflow pressure.

[0063] Optionally, constructing a compressor speed model according to the rapid speed model, the real-time compression power, the real-time compression torque and the cooling process factor includes:

[0064] The compressor speed model is constructed using the following formula:

[0065] ,

[0066] in, represents the compressor speed model, and L represents the real-time compression torque.

[0067] To achieve the above object, the present invention further provides a compressor speed control system based on air cooling and heat exchange analysis, comprising:

[0068] The air cooling and heating analysis module is used to perform air cooling and heating exchange analysis using pre-built temperature sensors according to a preset control duration, obtain a real-time indoor temperature set and a real-time outdoor temperature set, and calculate a real-time temperature difference based on the real-time indoor temperature set and the real-time outdoor temperature set, wherein the temperature sensors include: an indoor temperature sensor and an outdoor temperature sensor;

[0069] A fast model building module is used to obtain a user-set temperature and an initial indoor temperature, measure the indoor cooling process based on the user-set temperature and the initial indoor temperature, obtain a cooling process factor, obtain a maximum compression speed based on a pre-built compressor, and build a fast speed model based on the maximum compression speed, the cooling process factor and a preset standard cooling threshold;

[0070] A target flow calculation module is used to measure the original injection flow of the low-temperature gaseous refrigerant, calculate the original flow difference according to the original injection flow and a preset standard injection flow, perform integral transformation on the original flow difference to obtain a flow integral factor, and perform flow regulation on the original injection flow according to the flow integral factor, the real-time temperature difference and a preset flow gain factor to obtain a target injection flow;

[0071] The compression speed control module is used to collect the injection pressure and the outflow pressure of the compressor, calculate the compression pressure difference based on the injection pressure and the outflow pressure, calculate the power of the compressor according to the compression pressure difference, the target injection flow rate and the preset compression efficiency, obtain the real-time compression power, measure the real-time compression torque of the compressor, construct a compressor speed model according to the rapid speed model, the real-time compression power, the real-time compression torque and the cooling process factor, and control the compressor speed based on the compressor speed model.

[0072] In order to solve the above problem, the present invention further provides an electronic device, the electronic device comprising:

[0073] a memory storing at least one instruction; and

[0074] The processor executes the instructions stored in the memory to implement the compressor speed control method based on air cooling and heat exchange analysis as described above.

[0075] In order to solve the above problems, the present invention also provides a computer-readable storage medium, in which at least one instruction is stored. The at least one instruction is executed by a processor in an electronic device to implement the above-mentioned compressor speed control method based on air heat exchange analysis.

[0076] In order to solve the problems described in the background technology, the present invention first uses a temperature sensor to collect temperature according to the control time to obtain a real-time indoor temperature set and a real-time outdoor temperature set, and calculates a real-time temperature difference based on the real-time indoor temperature set and the real-time outdoor temperature set. This step realizes the real-time acquisition of the indoor and outdoor temperature difference, so that the entire compressor speed control process conforms to the actual indoor and outdoor temperature conditions, and improves the accuracy of subsequent compressor speed control. By obtaining the user-set temperature and the initial indoor temperature, and based on the user-set temperature and the initial indoor temperature, the real-time indoor temperature is measured for the cooling process, and the cooling process factor is obtained, which makes the indoor The temperature change inside the room has a clear numerical expression, which provides a basis for the subsequent automatic control of the compressor speed. Then the maximum compression speed of the compressor is obtained, and a fast speed model is constructed based on the maximum compression speed, the cooling process factor and the standard cooling threshold. The compressor speed is divided into a working range using the cooling process factor, so that the compressor can quickly increase the compressor speed according to the fast cooling model at the beginning of the cooling stage, so that the indoor temperature can be quickly reduced to the standard cooling threshold without the need to manually lower the user-set temperature due to the slow cooling rate. This improves the degree of automation of the compressor speed control. The original injection flow of the low-temperature gaseous refrigerant is measured, and the original flow difference is calculated according to the original injection flow and the standard injection flow, which provides conditions for the subsequent regulation of the compressor speed. Similarly, the original flow difference is integrally transformed to obtain the flow integral factor, and the original injection flow is adjusted according to the flow integral factor, the real-time temperature difference and the flow gain factor to obtain the target injection flow, which also provides conditions for the subsequent regulation of the compressor speed. At the same time, the use of integral regulation also makes the obtained target injection flow more consistent with the actual situation of the compressor and the current temperature environment, thereby improving the accuracy of the compressor speed regulation. Next, the injection pressure and the outflow pressure of the compressor are collected, and the compression pressure difference is calculated based on the injection pressure and the outflow pressure. According to the compression pressure difference, the target injection flow and the compression efficiency, the power of the compressor is calculated to obtain the real-time compression power. Since the compressor speed is directly related to the real-time compression power, this step provides direct conditions for constructing the compressor speed model. Finally, the real-time compression torque of the compressor is measured, and the compressor speed model is constructed according to the fast speed model, the real-time compression power, the real-time compression torque and the cooling process factor. Based on the compressor speed model, the compressor speed is regulated, thereby realizing a high degree of automation of the compressor speed regulation. Therefore, the present invention can improve the accuracy and automation of compressor speed control. BRIEF DESCRIPTION OF THE DRAWINGS

[0077] Figure 1 A schematic flow chart of a compressor speed control method based on air cooling and heat exchange analysis provided by an embodiment of the present invention;

[0078] Figure 2 A functional module diagram of a compressor speed control system based on air cooling and heat exchange analysis provided by an embodiment of the present invention;

[0079] Figure 3 A schematic structural diagram of an electronic device for implementing the compressor speed control method based on air heat exchange analysis provided in one embodiment of the present invention.

[0080] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0081] It should be understood that the specific embodiments described herein are only used to explain the present invention, and are not used to limit the present invention.

[0082] The embodiment of the present application provides a compressor speed control method based on air heat exchange analysis. The execution subject of the compressor speed control method based on air heat exchange analysis includes but is not limited to at least one of the electronic devices such as a server and a terminal that can be configured to execute the method provided by the embodiment of the present application. In other words, the compressor speed control method based on air heat exchange analysis can be executed by software or hardware installed on a terminal device or a server device, and the software can be a blockchain platform. The server includes but is not limited to: a single server, a server cluster, a cloud server or a cloud server cluster, etc.

[0083] Reference Figure 1 FIG. 1 is a flow chart of a compressor speed control method based on air heat exchange analysis provided by an embodiment of the present invention. In this embodiment, the compressor speed control method based on air heat exchange analysis includes:

[0084] S1. According to the preset control duration, use the pre-built temperature sensor to perform air heat exchange analysis to obtain a real-time indoor temperature set and a real-time outdoor temperature set, and calculate the real-time temperature difference based on the real-time indoor temperature set and the real-time outdoor temperature set, wherein the temperature sensor includes: an indoor temperature sensor and an outdoor temperature sensor.

[0085] It is clear that the control time refers to the collection period when the temperature is collected by the temperature sensor. The control time can be set manually. The control time is introduced to prevent slight deviations caused by instantaneous fluctuations in the real-time indoor temperature and the real-time outdoor temperature. The indoor temperature sensor refers to a sensor used to measure the real-time indoor temperature in the air-conditioning system. The outdoor temperature sensor refers to a sensor used to measure the real-time outdoor temperature in the air-conditioning system. The real-time indoor temperature refers to the real-time temperature of the indoor space, and the real-time outdoor temperature refers to the real-time temperature outside the indoor space, wherein the indoor space refers to the space to be cooled by the air-conditioning system.

[0086] It should be explained that since only one real-time indoor temperature or one real-time outdoor temperature is collected, it may be affected by the temperature changes of the air-conditioning system itself when it is working, thereby causing instantaneous temperature fluctuations. Therefore, the control time is introduced so that the temperature sensor can collect multiple indoor temperatures and multiple outdoor temperatures within one control time, and then calculate the data features of multiple indoor temperatures and multiple outdoor temperatures to obtain the real-time indoor temperature and real-time outdoor temperature, where the data features can be average values. It should be noted that although the introduction of the control time can eliminate the impact of the air-conditioning system itself on temperature collection, a longer control time may cause a certain lag in the collected real-time indoor temperature and real-time outdoor temperature. Therefore, the control time should be a value set manually according to actual conditions, and the control time should not be too long.

[0087] In detail, the method uses a pre-built temperature sensor to perform air cooling and heat exchange analysis according to the preset control time to obtain a real-time indoor temperature set and a real-time outdoor temperature set, including:

[0088] Set the initial collection times and initial collection duration, wherein the initial collection times and initial collection duration are respectively expressed as:

[0089] ,

[0090] in, Indicates the initial collection times, Indicates the initial collection duration;

[0091] According to the initial collection times, the temperature sensor is used to collect the indoor and outdoor temperatures for a pth time to obtain the pth real-time indoor and outdoor temperatures, wherein the pth real-time indoor and outdoor temperatures include: the pth real-time indoor temperature and the pth real-time outdoor temperature;

[0092] The pth collection time of the pth indoor and outdoor temperature collection is recorded, the target collection time is set according to the initial collection time, and the cumulative collection time is calculated based on the pth collection time, wherein the target collection time and the cumulative collection time are respectively expressed as:

[0093] ,

[0094] in, Indicates the number of target acquisitions, Indicates the cumulative collection time. Indicates the pth collection duration;

[0095] Determine whether the accumulated acquisition time is less than the control time:

[0096] If the accumulated collection time is less than the control time, the initial collection times and the initial collection time are updated using the target collection times and the accumulated collection time respectively, and the process returns to the step of collecting the indoor and outdoor temperatures for the pth time using the temperature sensor according to the initial collection times to obtain the pth real-time indoor and outdoor temperatures;

[0097] If the accumulated collection time is not less than the control time, the pth real-time indoor and outdoor temperatures are summarized to obtain a real-time indoor temperature set and a real-time outdoor temperature set.

[0098] It can be understood that the initial acquisition times refers to an integer used to represent the number of times the temperature sensor collects temperature. The initial acquisition times are recorded as p and gradually increase from 1. If the current indoor temperature acquisition times are recorded as a, the range of the initial acquisition times can be expressed as (1, a-1). The initial acquisition duration refers to the total time that the indoor temperature sensor has currently collected the real-time indoor temperature. The initial acquisition duration is the sum of the pth acquisition durations. It is a number that gradually increases from 0. The control duration is recorded as b, and the range of the initial acquisition duration can be expressed as (0, b).

[0099] It can be understood that the pth real-time indoor temperature refers to the real-time indoor temperature measured by the indoor temperature sensor during the pth temperature collection, and the pth real-time outdoor temperature refers to the real-time outdoor temperature measured by the outdoor temperature sensor during the pth temperature collection. The pth collection duration refers to the time required for the temperature sensor to collect the indoor and outdoor temperatures for the pth time. The target collection number refers to an integer that can be used to represent the number of temperature collections performed by the temperature sensor, and the target collection number is recorded as , gradually increases from 2. The range of the target acquisition times can be expressed as (2, a). The difference between the target acquisition times and the initial acquisition times is that the target acquisition times are always 1 greater than the initial acquisition times. The cumulative acquisition time refers to the total time that the indoor temperature sensor has currently collected the real-time indoor temperature. The cumulative acquisition time is the sum of the pth acquisition time. It is a The number starts to increase gradually, among which, It represents the first collection time, that is, the time required for the indoor temperature sensor to collect the real-time indoor temperature for the first time. The accumulated collection time can be expressed as ( , b].

[0100] For example, the control time of a certain indoor temperature sensor and an outdoor temperature sensor is set to 1s. Taking the indoor temperature sensor for temperature collection as an example, when the temperature collection of the indoor temperature sensor starts, the indoor temperature sensor has not yet collected the temperature, so the initial collection time is 0, then the initial collection times can be set to 1, which indicates that the indoor temperature sensor is about to collect the first real-time indoor temperature. According to the initial collection times, i.e. 1, the temperature is collected to obtain the first real-time indoor temperature. The time required to measure the first real-time indoor temperature is , that is, the first collection duration is , record the target acquisition times as 1+1=2, and record the accumulated acquisition time as 0+ At this time, the first indoor temperature collection of the indoor temperature sensor is completed, and it is judged that the cumulative collection time at this time is less than the control time, that is, 0.1s is less than 1s, then the target collection times and the cumulative collection time are used as the initial collection times and the initial collection time, then the initial collection times and the initial collection time are 2 and 0.1s respectively, and the second indoor temperature collection is performed.

[0101] In detail, the calculating the real-time temperature difference based on the real-time indoor temperature set and the real-time outdoor temperature set includes:

[0102] The real-time indoor temperature set and the real-time outdoor temperature set are respectively expressed as:

[0103] ,

[0104] in, represents the real-time indoor temperature set, Indicates the first real-time indoor temperature. represents the kth real-time indoor temperature, k represents the number of real-time indoor temperatures or real-time outdoor temperatures collected during the control period, represents the real-time outdoor temperature set, Indicates the first real-time outdoor temperature. represents the kth real-time outdoor temperature;

[0105] According to the real-time indoor temperature set and the real-time outdoor temperature set, the real-time temperature difference is calculated using the following formula:

[0106] ,

[0107] in, Indicates the real-time temperature difference. Indicates the real-time outdoor temperature. represents the real-time indoor temperature, i represents the sequence number of the real-time outdoor temperature in the real-time outdoor temperature set, represents the i-th real-time outdoor temperature, j represents the sequence number of the real-time indoor temperature set, represents the jth real-time indoor temperature, Represents the absolute value symbol.

[0108] S2. Obtain the user set temperature and the initial indoor temperature, and based on the user set temperature and the initial indoor temperature, measure the indoor cooling process to obtain a cooling process factor.

[0109] It is clear that the user set temperature refers to the temperature set by the target air-conditioning user for the air-conditioning system, and the user set temperature will be used to guide the air-conditioning system to cool down. The initial indoor temperature refers to the real-time indoor temperature collected when the air-conditioning system was powered on the last time. The cooling process factor refers to the temperature used to indicate the cooling process of the air-conditioning system on the indoor space.

[0110] It should be explained that when the air conditioning system is cooling, in order to better control the cooling process of the air conditioning system, it is necessary to understand the cooling process of the cooling process, that is, to what extent the air conditioning system has reduced the temperature of the indoor space. The cooling process factor can well represent this cooling process.

[0111] For example, when the air-conditioning system is just turned on, the air-conditioning system has not yet started cooling the indoor space or the cooling effect is extremely unobvious, and the cooling process factor at this time is 0, which indicates that the cooling process of the air-conditioning system has just begun. When the air-conditioning system lowers the target indoor temperature to the user-set temperature, it means that the air-conditioning system's cooling work for the indoor space has basically reached the standard of the target air-conditioning user, and the cooling process factor at this time is 1, which indicates that the cooling process of the target control system has basically ended.

[0112] In detail, the indoor cooling process is measured based on the user set temperature and the initial indoor temperature to obtain the cooling process factor, including:

[0113] According to the real-time indoor temperature, the user-set temperature and the initial indoor temperature, the cooling process factor is calculated using the following formula:

[0114] ,

[0115] in, represents the cooling process factor, represents the initial indoor temperature, Indicates the user set temperature.

[0116] S3. According to the pre-built compressor, the maximum compression speed is obtained, and a fast speed model is constructed based on the maximum compression speed, the cooling process factor and the preset standard cooling threshold.

[0117] It is understandable that the compressor refers to a device that compresses low-temperature gaseous refrigerant into high-temperature gaseous refrigerant at high temperature, wherein the refrigerant is a chemical substance used for cooling in the air-conditioning system, and the refrigerant is usually in liquid state, low-temperature gaseous refrigerant is a refrigerant in the form of low-temperature gas, and high-temperature gaseous refrigerant is a refrigerant in the form of high-temperature gas. The maximum compression speed refers to the maximum speed that the compressor can reach. It should be noted that the compressor itself cannot rotate, so the compression speed of the compressor specifically refers to the speed of the motor, which provides electrical energy for the compressor to perform compression work.

[0118] It is clear that the standard cooling threshold refers to a relatively comfortable temperature that the human body can feel, and the standard cooling threshold is set manually. The rapid speed model refers to a model that can represent the compression speed of the compressor, wherein the compression speed in the rapid speed model should be a larger value. The purpose of introducing the rapid speed model is to allow the air-conditioning system to accelerate the speed of the compressor at the initial startup, thereby quickly reducing the temperature of the indoor space to the standard cooling threshold. This rapid cooling can enable the target air-conditioning user to feel a suitable temperature in a short period of time, but long-term acceleration of the compression speed of the compressor will cause the load of the air-conditioning system to be too large, which will not only affect the service life of the air-conditioning system, but also generate long-term working noise. Therefore, the rapid speed model only works at the initial startup of the air-conditioning system.

[0119] It should be explained that since the liquid refrigerant needs to absorb heat to evaporate into a gaseous refrigerant, the air-conditioning system can cool the indoor space through the change of the refrigerant's form. After the liquid refrigerant is converted into a gaseous refrigerant, it is necessary to convert the gaseous refrigerant back into a liquid refrigerant, thereby realizing the recycling of the refrigerant. The compressor compresses the low-temperature gaseous refrigerant into a high-temperature gaseous refrigerant, which accelerates the process of converting the gaseous refrigerant back into a liquid refrigerant. The compression speed of the compressor can affect the compression efficiency of the compressor, so the compression speed can affect the cooling rate of the entire air-conditioning system.

[0120] In detail, the fast speed model is constructed based on the maximum compression speed, the cooling process factor and the preset standard cooling threshold, including:

[0121] The current cooling time and the system startup time are obtained, and the current cooling duration is calculated based on the current cooling time and the system startup time, wherein the current cooling duration is expressed as:

[0122] ,

[0123] in, Indicates the current cooling time. Indicates the current cooling time. Indicates the system startup time;

[0124] According to the standard temperature drop threshold and the initial indoor temperature, the initial temperature difference is calculated, and based on the initial temperature difference and the maximum compression speed, the maximum time constant is searched in a preset temperature time table, wherein the temperature time relationship table is a relationship table between the temperature difference and the speed;

[0125] According to the maximum compression speed, standard temperature drop threshold, maximum time constant, current temperature drop duration and temperature drop process factor, the following fast speed model is constructed:

[0126] ,

[0127] in, represents the fast speed model, Indicates the maximum compression speed, represents the maximum time constant, represents the standard cooling threshold, and e represents the natural base.

[0128] It can be understood that the current cooling time refers to the current time, the system startup time refers to the time when the air-conditioning system was last started, and the current cooling duration refers to the time that has elapsed since the air-conditioning system was last started. The current cooling duration is the difference between the system startup time and the current cooling time.

[0129] It can be understood that the initial temperature difference refers to the difference between the standard cooling threshold and the initial indoor temperature, and the maximum time constant refers to the time required to reduce the target indoor temperature to the standard cooling threshold when the compressor runs at the maximum compression speed.

[0130] S4. Measure the original injection flow rate of the low-temperature gaseous refrigerant, and calculate the original flow rate difference according to the original injection flow rate and a preset standard injection flow rate.

[0131] It can be understood that the low-temperature gaseous refrigerant refers to a refrigerant in the form of a low-temperature gas, the original injection flow rate refers to the flow rate when the low-temperature gaseous refrigerant is injected into the compressor, the standard injection flow rate refers to the maximum flow rate injected into the compressor without affecting the performance of the compressor. The standard injection flow rate can be set manually, and the original flow difference refers to the difference between the original injection flow rate and the standard injection flow rate.

[0132] S5. Integrate the original flow difference to obtain a flow integral factor, and adjust the original injection flow according to the flow integral factor, the real-time temperature difference and a preset flow gain factor to obtain a target injection flow.

[0133] It is clear that the flow integral factor refers to a parameter that can be used to integrally adjust the subsequent target injection flow. The flow integral factor is calculated based on the original injection flow and the standard injection flow, and represents the actual numerical deviation of the original injection flow from the standard injection flow, that is, the flow integral factor. The actual numerical deviation is applied to the subsequent calculation of the target injection flow, so that the calculation result of the target injection flow is more accurate, which not only accurately adjusts the original injection flow, but also meets the needs of the standard injection flow. The target injection flow refers to the original injection flow after adjustment. The flow gain factor refers to the numerical adjustment coefficient when calculating the target injection flow, which is set manually.

[0134] In detail, the integral transformation of the original flow difference to obtain the flow integral factor includes:

[0135] The original flow difference is expressed as:

[0136] ,

[0137] in, Indicates the original flow difference, represents the original injection flow, Indicates the standard injection flow rate;

[0138] Acquire the real-time internal temperature of the compressor, and acquire the real-time selected temperature by using a preset selection function according to the real-time indoor temperature and the real-time outdoor temperature;

[0139] According to the real-time internal temperature and the real-time selected temperature, a temperature disturbance parameter is set, wherein the temperature disturbance parameter is expressed as:

[0140] ,

[0141] ,

[0142] in, represents the temperature perturbation parameter, Indicates the real-time internal temperature. Indicates real-time selection of temperature. represents the selection function, and e represents the natural base;

[0143] Set the limit time value, and calculate the flow integration factor using the following formula based on the limit time value, temperature disturbance parameter and original flow difference:

[0144] ,

[0145] in, represents the flow integration factor, Indicates the limit time value, represents the integration variable.

[0146] It can be understood that the real-time internal temperature refers to the internal temperature of the compressor, and the selection function refers to a function that can realize the selection function of the input independent variable. The selection function will select the input independent variable and use the selected independent variable as the dependent variable, and then output the dependent variable. The internal disturbance parameter refers to a parameter that can represent the influence of the internal temperature of the compressor on the compressor injection flow. The limit time value refers to a minimum time parameter used to define the integral range. The limit time value is a very small value set by humans. For example, when the current cooling time is 10s, the limit time can be set to 0.01s.

[0147] It should be explained that the real-time internal temperature may affect the working performance of the compressor, so a temperature disturbance parameter should be set for the real-time internal temperature in order to adjust the value of the flow integral factor. When setting the temperature disturbance parameter, the real-time internal temperature cannot be considered alone, because the real-time internal temperature has different effects on the working performance of the compressor depending on the external temperature of the compressor. For example, when the external temperature of the compressor is high, the real-time internal temperature may maintain a higher value, and when the external temperature of the compressor is low, the real-time internal temperature may maintain a lower value. Therefore, when setting the temperature disturbance parameter, the external temperature of the compressor should be considered. The external temperature of the compressor depends on whether the compressor is installed indoors or outdoors. Therefore, a selection function is set to determine whether the compressor is outdoors or indoors. If the compressor is outdoors, the real-time external temperature is used as the external temperature of the compressor. If the compressor is indoors, the real-time internal temperature is used as the external temperature of the compressor.

[0148] In detail, the flow rate is adjusted on the original injection flow rate according to the flow integration factor, the real-time temperature difference and the preset flow gain factor to obtain the target injection flow rate, including:

[0149] According to the flow integral factor, limit time value, real-time temperature difference and flow gain factor, the target injection flow rate is calculated using the following formula:

[0150] ,

[0151] in, Indicates the target injection flow, Represents the flow gain factor.

[0152] S6. Collect the injection pressure and the outflow pressure of the compressor, calculate the compression pressure difference based on the injection pressure and the outflow pressure, and calculate the power of the compressor according to the compression pressure difference, the target injection flow rate and the preset compression efficiency to obtain the real-time compression power.

[0153] It can be understood that the injection pressure refers to the pressure generated when the low-temperature gaseous refrigerant is injected into the compressor, the outflow pressure refers to the pressure generated when the high-temperature gaseous refrigerant is discharged from the compressor, and the compression pressure difference refers to the difference between the injection pressure and the outflow pressure. The compression efficiency refers to the working efficiency of the compressor when it is working, and the compression efficiency is set manually. The real-time compression power refers to the real-time working power of the compressor when it is working.

[0154] In detail, the power calculation of the compressor is performed according to the compression pressure difference, the target injection flow rate and the preset compression efficiency to obtain the real-time compression power, including:

[0155] According to the compression pressure difference, target injection flow rate and compression efficiency, the real-time compression power is calculated using the following formula:

[0156] ,

[0157] in, represents the real-time compression power, represents the compression pressure difference, represents the compression efficiency, Indicates the injection pressure, Indicates the outflow pressure.

[0158] S7. Measure the real-time compression torque of the compressor, construct a compressor speed model according to the rapid speed model, real-time compression power, real-time compression torque and cooling process factor, and regulate the compressor speed based on the compressor speed model.

[0159] It can be understood that the real-time compression torque refers to the real-time rotational torque of the motor when the compressor is working, and the compressor speed model refers to a model that represents the compression speed of the compressor. The compressor speed model is improved and supplemented based on the fast speed model and is a complete compressor speed model.

[0160] In detail, the compressor speed model is constructed according to the fast speed model, the real-time compression power, the real-time compression torque and the cooling process factor, including:

[0161] The compressor speed model is constructed using the following formula:

[0162] ,

[0163] in, represents the compressor speed model, and L represents the real-time compression torque.

[0164] It needs to be explained that when the cooling process factor is: When , it means that the real-time indoor temperature has not reached the standard cooling threshold, so the compressor speed model is suitable for the fast speed model. When the cooling process factor is: When , it means that the real-time indoor temperature has exceeded the standard cooling threshold, so the compressor speed model is no longer applicable to the fast speed model. The compressor speed at this time is related to the real-time compression power: , calculate the compressor speed. When the cooling process factor is 1, it means that the real-time indoor temperature at this time meets the needs of the target air-conditioning users. In order to save energy and reduce the loss of the compressor, the compressor can be stopped and the compressor speed can be set to 0.

[0165] In order to solve the problems described in the background technology, the present invention first uses a temperature sensor to collect temperature according to the control time to obtain a real-time indoor temperature set and a real-time outdoor temperature set, and calculates a real-time temperature difference based on the real-time indoor temperature set and the real-time outdoor temperature set. This step realizes the real-time acquisition of the indoor and outdoor temperature difference, so that the entire compressor speed control process conforms to the actual indoor and outdoor temperature conditions, and improves the accuracy of subsequent compressor speed control. By obtaining the user-set temperature and the initial indoor temperature, and based on the user-set temperature and the initial indoor temperature, the real-time indoor temperature is measured for the cooling process, and the cooling process factor is obtained, which makes The indoor temperature change has a clear numerical expression, which provides a basis for the subsequent automatic control of the compressor speed. Then the maximum compression speed of the compressor is obtained, and a fast speed model is constructed based on the maximum compression speed, the cooling process factor and the standard cooling threshold. The compressor speed is divided into a working range using the cooling process factor, so that the compressor can quickly increase the compressor speed according to the fast cooling model at the beginning of the cooling stage, so that the indoor temperature can be quickly reduced to the standard cooling threshold without the need to manually lower the user-set temperature due to the slow cooling rate. This strengthens the automation of the compressor speed control. The original injection flow of the low-temperature gaseous refrigerant is measured, and the original flow difference is calculated according to the original injection flow and the standard injection flow, which provides conditions for the subsequent regulation of the compressor speed. Similarly, the original flow difference is integrally transformed to obtain the flow integral factor, and the original injection flow is adjusted according to the flow integral factor, the real-time temperature difference and the flow gain factor to obtain the target injection flow, which also provides conditions for the subsequent regulation of the compressor speed. At the same time, the use of integral regulation also makes the obtained target injection flow more consistent with the actual situation of the compressor and the current temperature environment, thereby improving the accuracy of the compressor speed regulation. Next, the injection pressure and the outflow pressure of the compressor are collected, and the compression pressure difference is calculated based on the injection pressure and the outflow pressure. According to the compression pressure difference, the target injection flow and the compression efficiency, the power of the compressor is calculated to obtain the real-time compression power. Since the compressor speed is directly related to the real-time compression power, this step provides direct conditions for constructing the compressor speed model. Finally, the real-time compression torque of the compressor is measured, and the compressor speed model is constructed according to the fast speed model, the real-time compression power, the real-time compression torque and the cooling process factor. Based on the compressor speed model, the compressor speed is regulated, thereby realizing a high degree of automation of the compressor speed regulation. Therefore, the present invention can improve the accuracy and automation of compressor speed control.

[0166] like Figure 2 , which is a functional module diagram of a compressor speed control system based on air heat exchange analysis provided by an embodiment of the present invention.

[0167] The compressor speed control system 100 based on air heat exchange analysis of the present invention can be installed in an electronic device. According to the functions to be implemented, the compressor speed control system 100 based on air heat exchange analysis can include an air heat analysis module 101, a fast model building module 102, a target flow calculation module 103 and a compression speed control module 104. The module of the present invention can also be called a unit, which refers to a series of computer program segments that can be executed by an electronic device processor and can complete fixed functions, which are stored in the memory of the electronic device.

[0168] The air cooling and heating analysis module 101 is used to perform air cooling and heating exchange analysis using a pre-built temperature sensor according to a preset control duration, obtain a real-time indoor temperature set and a real-time outdoor temperature set, and calculate a real-time temperature difference based on the real-time indoor temperature set and the real-time outdoor temperature set, wherein the temperature sensor includes: an indoor temperature sensor and an outdoor temperature sensor;

[0169] The fast model building module 102 is used to obtain the user set temperature and the initial indoor temperature, measure the indoor cooling process based on the user set temperature and the initial indoor temperature, obtain the cooling process factor, obtain the maximum compression speed according to the pre-built compressor, and build a fast speed model based on the maximum compression speed, the cooling process factor and the preset standard cooling threshold;

[0170] The target flow calculation module 103 is used to measure the original injection flow of the low-temperature gaseous refrigerant, calculate the original flow difference according to the original injection flow and the preset standard injection flow, perform integral transformation on the original flow difference to obtain a flow integral factor, and perform flow regulation on the original injection flow according to the flow integral factor, the real-time temperature difference and the preset flow gain factor to obtain a target injection flow;

[0171] The compression speed control module 104 is used to collect the injection pressure and the outflow pressure of the compressor, calculate the compression pressure difference based on the injection pressure and the outflow pressure, calculate the power of the compressor according to the compression pressure difference, the target injection flow rate and the preset compression efficiency, obtain the real-time compression power, measure the real-time compression torque of the compressor, construct a compressor speed model according to the rapid speed model, the real-time compression power, the real-time compression torque and the cooling process factor, and control the compressor speed based on the compressor speed model.

[0172] In detail, each module in the compressor speed control system 100 based on air cooling and heat exchange analysis in the embodiment of the present invention is used in the same manner as above. Figure 1The compressor speed control method based on air heat exchange analysis described in the invention has the same technical means and can produce the same technical effects, so it will not be repeated here.

[0173] like Figure 3 , is a schematic diagram of the structure of an electronic device for implementing a compressor speed control method based on air cooling and heat exchange analysis provided by an embodiment of the present invention.

[0174] The electronic device 1 may include a processor 10, a memory 11 and a bus 12, and may also include a computer program stored in the memory 11 and executable on the processor 10, such as a compressor speed control method program based on air cooling and heat exchange analysis.

[0175] The memory 11 includes at least one type of readable storage medium, and the readable storage medium includes a flash memory, a mobile hard disk, a multimedia card, a card-type memory (for example, an SD or DX memory, etc.), a magnetic memory, a disk, an optical disk, etc. In some embodiments, the memory 11 may be an internal storage unit of the electronic device 1, such as a mobile hard disk of the electronic device 1. In other embodiments, the memory 11 may also be an external storage device of the electronic device 1, such as a plug-in mobile hard disk, a smart memory card (Smart Media Card, SMC), a secure digital (SecureDigital, SD) card, a flash card (Flash Card), etc. equipped on the electronic device 1. Further, the memory 11 also includes an internal storage unit of the electronic device 1 and an external storage device. The memory 11 can not only be used to store application software and various types of data installed in the electronic device 1, such as the code of the compressor speed control method program based on air cooling and heat exchange analysis, but also can be used to temporarily store data that has been output or is to be output.

[0176] The processor 10 may be composed of an integrated circuit in some embodiments, for example, a single packaged integrated circuit, or a plurality of packaged integrated circuits with the same or different functions, including one or more central processing units (CPUs), microprocessors, digital processing chips, graphics processors, and a combination of various control chips, etc. The processor 10 is the control core (Control Unit) of the electronic device, and uses various interfaces and lines to connect various components of the entire electronic device, and executes or executes programs or modules stored in the memory 11 (such as a compressor speed control method program based on air cooling and heat exchange analysis, etc.), and calls data stored in the memory 11 to execute various functions of the electronic device 1 and process data.

[0177] The bus 12 may be a peripheral component interconnect (PCI) bus or an extended industry standard architecture (EISA) bus, etc. The bus 12 may be divided into an address bus, a data bus, a control bus, etc. The bus 12 is configured to realize connection and communication between the memory 11 and at least one processor 10, etc.

[0178] Figure 3 Only an electronic device with components is shown, and those skilled in the art will understand that Figure 3 The structure shown does not constitute a limitation on the electronic device 1, and may include fewer or more components than shown in the figure, or combine certain components, or arrange the components differently.

[0179] For example, although not shown, the electronic device 1 may also include a power source (such as a battery) for supplying power to various components. Preferably, the power source may be logically connected to the at least one processor 10 through a power management system, so that the power management system can realize functions such as charging management, discharging management, and power consumption management. The power source may also include any components such as one or more DC or AC power sources, recharging systems, power failure detection circuits, power converters or inverters, and power status indicators. The electronic device 1 may also include a variety of sensors, Bluetooth modules, Wi-Fi modules, etc., which will not be repeated here.

[0180] Furthermore, the electronic device 1 may also include a network interface. Optionally, the network interface may include a wired interface and / or a wireless interface (such as a WI-FI interface, a Bluetooth interface, etc.), which is generally used to establish a communication connection between the electronic device 1 and other electronic devices.

[0181] Optionally, the electronic device 1 may further include a user interface, which may be a display, an input unit (such as a keyboard), or a standard wired interface or a wireless interface. Optionally, in some embodiments, the display may be an LED display, a liquid crystal display, a touch-sensitive liquid crystal display, and an OLED (Organic Light-Emitting Diode) touch device. The display may also be appropriately referred to as a display screen or a display unit, which is used to display information processed in the electronic device 1 and to display a visual user interface.

[0182] The compressor speed control method program based on air cooling and heat exchange analysis stored in the memory 11 of the electronic device 1 is a combination of multiple instructions. When running in the processor 10, it can achieve:

[0183] According to the preset control time, the pre-built temperature sensor is used to perform air heat exchange analysis to obtain a real-time indoor temperature set and a real-time outdoor temperature set, and the real-time temperature difference is calculated based on the real-time indoor temperature set and the real-time outdoor temperature set, wherein the temperature sensor includes: an indoor temperature sensor and an outdoor temperature sensor;

[0184] Acquire a user-set temperature and an initial indoor temperature, and based on the user-set temperature and the initial indoor temperature, measure the indoor cooling process to obtain a cooling process factor;

[0185] According to the pre-built compressor, the maximum compression speed is obtained, and a fast speed model is constructed based on the maximum compression speed, the cooling process factor and the preset standard cooling threshold;

[0186] Measuring an original injection flow rate of a low-temperature gaseous refrigerant, and calculating an original flow rate difference according to the original injection flow rate and a preset standard injection flow rate;

[0187] Performing an integral transformation on the original flow difference to obtain a flow integral factor, and performing flow regulation on the original injection flow according to the flow integral factor, the real-time temperature difference and a preset flow gain factor to obtain a target injection flow;

[0188] Collecting the injection pressure and the outflow pressure of the compressor, calculating the compression pressure difference based on the injection pressure and the outflow pressure, and performing power calculation on the compressor according to the compression pressure difference, the target injection flow rate and the preset compression efficiency to obtain the real-time compression power;

[0189] The real-time compression torque of the compressor is measured, and a compressor speed model is constructed according to the rapid speed model, the real-time compression power, the real-time compression torque and the cooling process factor. Based on the compressor speed model, the compressor speed is regulated.

[0190] Specifically, the specific implementation method of the processor 10 for the above instructions can refer to Figures 1 to 3 The description of the relevant steps in the corresponding embodiments will not be repeated here.

[0191] Furthermore, if the module / unit integrated in the electronic device 1 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. The computer-readable storage medium can be volatile or non-volatile. For example, the computer-readable medium can include: any entity or system that can carry the computer program code, a recording medium, a USB flash drive, a mobile hard disk, a magnetic disk, an optical disk, a computer memory, and a read-only memory (ROM).

[0192] The present invention further 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 of an electronic device, the computer program can implement:

[0193] According to the preset control time, the pre-built temperature sensor is used to perform air heat exchange analysis to obtain a real-time indoor temperature set and a real-time outdoor temperature set, and the real-time temperature difference is calculated based on the real-time indoor temperature set and the real-time outdoor temperature set, wherein the temperature sensor includes: an indoor temperature sensor and an outdoor temperature sensor;

[0194] Acquire a user-set temperature and an initial indoor temperature, and based on the user-set temperature and the initial indoor temperature, measure the indoor cooling process to obtain a cooling process factor;

[0195] According to the pre-built compressor, the maximum compression speed is obtained, and a fast speed model is constructed based on the maximum compression speed, the cooling process factor and the preset standard cooling threshold;

[0196] Measuring an original injection flow rate of a low-temperature gaseous refrigerant, and calculating an original flow rate difference according to the original injection flow rate and a preset standard injection flow rate;

[0197] Performing an integral transformation on the original flow difference to obtain a flow integral factor, and performing flow regulation on the original injection flow according to the flow integral factor, the real-time temperature difference and a preset flow gain factor to obtain a target injection flow;

[0198] Collecting the injection pressure and the outflow pressure of the compressor, calculating the compression pressure difference based on the injection pressure and the outflow pressure, and performing power calculation on the compressor according to the compression pressure difference, the target injection flow rate and the preset compression efficiency to obtain the real-time compression power;

[0199] The real-time compression torque of the compressor is measured, and a compressor speed model is constructed according to the rapid speed model, the real-time compression power, the real-time compression torque and the cooling process factor. Based on the compressor speed model, the compressor speed is regulated.

[0200] In the several embodiments provided by the present invention, it should be understood that the disclosed devices, systems and methods can be implemented in other ways. For example, the system embodiments described above are only illustrative, and actual implementation may have other division methods.

[0201] The modules described as separate components may or may not be physically separated, and the components shown as modules may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0202] In addition, each functional module in each embodiment of the present invention may be integrated into one processing unit, each unit may exist physically separately, or two or more units may be integrated into one unit. The above-mentioned integrated unit may be implemented in the form of hardware or in the form of hardware plus software functional modules.

[0203] It is obvious to those skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention.

[0204] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the present invention can be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the present invention.

Claims

1. A compressor speed control method based on air cooling and heat exchange analysis, characterized in that: The method comprises: According to the preset control time, the pre-built temperature sensor is used to perform air heat exchange analysis to obtain a real-time indoor temperature set and a real-time outdoor temperature set, and the real-time temperature difference is calculated based on the real-time indoor temperature set and the real-time outdoor temperature set, wherein the temperature sensor includes: an indoor temperature sensor and an outdoor temperature sensor; Acquire a user-set temperature and an initial indoor temperature, and based on the user-set temperature and the initial indoor temperature, measure the indoor cooling process to obtain a cooling process factor; The indoor cooling process is measured based on the user set temperature and the initial indoor temperature to obtain the cooling process factor, including: According to the real-time indoor temperature, the user-set temperature and the initial indoor temperature, the cooling process factor is calculated using the following formula: ， in, represents the cooling process factor, represents the initial indoor temperature, Indicates the user set temperature. Indicates the real-time indoor temperature; According to the pre-built compressor, the maximum compression speed is obtained, and a fast speed model is constructed based on the maximum compression speed, the cooling process factor and the preset standard cooling threshold; Measuring an original injection flow rate of a low-temperature gaseous refrigerant, and calculating an original flow rate difference according to the original injection flow rate and a preset standard injection flow rate; Performing an integral transformation on the original flow difference to obtain a flow integral factor, and performing flow regulation on the original injection flow according to the flow integral factor, the real-time temperature difference and a preset flow gain factor to obtain a target injection flow; Collecting the injection pressure and the outflow pressure of the compressor, calculating the compression pressure difference based on the injection pressure and the outflow pressure, and performing power calculation on the compressor according to the compression pressure difference, the target injection flow rate and the preset compression efficiency to obtain the real-time compression power; The real-time compression torque of the compressor is measured, and a compressor speed model is constructed according to the rapid speed model, the real-time compression power, the real-time compression torque and the cooling process factor. Based on the compressor speed model, the compressor speed is regulated.

2. The compressor speed control method based on air cooling and heat exchange analysis according to claim 1, characterized in that: According to the preset control time, the pre-built temperature sensor is used to perform air cooling and heat exchange analysis to obtain a real-time indoor temperature set and a real-time outdoor temperature set, including: Set the initial collection times and initial collection duration, wherein the initial collection times and initial collection duration are respectively expressed as: ， in, Indicates the initial collection times, Indicates the initial collection duration; According to the initial collection times, the temperature sensor is used to collect the indoor and outdoor temperatures for a pth time to obtain the pth real-time indoor and outdoor temperatures, wherein the pth real-time indoor and outdoor temperatures include: the pth real-time indoor temperature and the pth real-time outdoor temperature; The pth collection time of the pth indoor and outdoor temperature collection is recorded, the target collection time is set according to the initial collection time, and the cumulative collection time is calculated based on the pth collection time, wherein the target collection time and the cumulative collection time are respectively expressed as: ， in, Indicates the number of target acquisitions, Indicates the cumulative collection time. Indicates the pth collection duration; Determine whether the accumulated acquisition time is less than the control time: If the accumulated collection time is less than the control time, the initial collection times and the initial collection time are updated using the target collection times and the accumulated collection time respectively, and the process returns to the step of collecting the indoor and outdoor temperatures for the pth time using the temperature sensor according to the initial collection times to obtain the pth real-time indoor and outdoor temperatures; If the accumulated collection time is not less than the control time, the pth real-time indoor and outdoor temperatures are summarized to obtain a real-time indoor temperature set and a real-time outdoor temperature set.

3. The compressor speed control method based on air cooling and heat exchange analysis according to claim 2 is characterized in that: The calculating the real-time temperature difference based on the real-time indoor temperature set and the real-time outdoor temperature set includes: The real-time indoor temperature set and the real-time outdoor temperature set are respectively expressed as: ， in, represents the real-time indoor temperature set, Indicates the first real-time indoor temperature. represents the kth real-time indoor temperature, k represents the number of real-time indoor temperatures or real-time outdoor temperatures collected during the control period, represents the real-time outdoor temperature set, Indicates the first real-time outdoor temperature. represents the kth real-time outdoor temperature; According to the real-time indoor temperature set and the real-time outdoor temperature set, the real-time temperature difference is calculated using the following formula: ， in, Indicates the real-time temperature difference. Indicates the real-time outdoor temperature. represents the real-time indoor temperature, i represents the sequence number of the real-time outdoor temperature in the real-time outdoor temperature set, represents the i-th real-time outdoor temperature, j represents the sequence number of the real-time indoor temperature set, represents the jth real-time indoor temperature, Represents the absolute value symbol.

4. The compressor speed control method based on air cooling and heat exchange analysis according to claim 3 is characterized in that: The fast speed model is constructed based on the maximum compression speed, the cooling process factor and the preset standard cooling threshold, including: The current cooling time and the system startup time are obtained, and the current cooling duration is calculated based on the current cooling time and the system startup time, wherein the current cooling duration is expressed as: ， in, Indicates the current cooling time. Indicates the current cooling time. Indicates the system startup time; According to the standard temperature drop threshold and the initial indoor temperature, the initial temperature difference is calculated, and based on the initial temperature difference and the maximum compression speed, the maximum time constant is searched in a preset temperature time table, wherein the temperature time relationship table is a relationship table between the temperature difference and the speed; According to the maximum compression speed, standard temperature drop threshold, maximum time constant, current temperature drop duration and temperature drop process factor, the following fast speed model is constructed: ， in, represents the fast speed model, Indicates the maximum compression speed, represents the maximum time constant, represents the standard cooling threshold, and e represents the natural base.

5. The compressor speed control method based on air cooling and heat exchange analysis according to claim 4 is characterized in that: The step of performing an integral transformation on the original flow difference to obtain a flow integral factor includes: The original flow difference is expressed as: ， in, Indicates the original flow difference, represents the original injection flow, Indicates the standard injection flow rate; Acquire the real-time internal temperature of the compressor, and acquire the real-time selected temperature by using a preset selection function according to the real-time indoor temperature and the real-time outdoor temperature; According to the real-time internal temperature and the real-time selected temperature, a temperature disturbance parameter is set, wherein the temperature disturbance parameter is expressed as: ， ， in, represents the temperature perturbation parameter, Indicates the real-time internal temperature. Indicates real-time selection of temperature. represents the selection function, and e represents the natural base; Set the limit time value, and calculate the flow integration factor using the following formula based on the limit time value, temperature disturbance parameter and original flow difference: ， in, represents the flow integration factor, Indicates the limit time value, represents the integration variable.

6. The compressor speed control method based on air cooling and heat exchange analysis according to claim 5 is characterized in that: The method of adjusting the original injection flow rate according to the flow integration factor, the real-time temperature difference and the preset flow gain factor to obtain the target injection flow rate includes: According to the flow integral factor, limit time value, real-time temperature difference and flow gain factor, the target injection flow rate is calculated using the following formula: ， in, Indicates the target injection flow, Represents the flow gain factor.

7. The compressor speed control method based on air cooling and heat exchange analysis according to claim 6 is characterized in that: The power calculation of the compressor is performed according to the compression pressure difference, the target injection flow rate and the preset compression efficiency to obtain the real-time compression power, including: According to the compression pressure difference, target injection flow rate and compression efficiency, the real-time compression power is calculated using the following formula: ， in, represents the real-time compression power, represents the compression pressure difference, represents the compression efficiency, Indicates the injection pressure, Indicates the outflow pressure.

8. The compressor speed control method based on air cooling and heat exchange analysis according to claim 7, characterized in that: The compressor speed model is constructed according to the fast speed model, the real-time compression power, the real-time compression torque and the cooling process factor, including: The compressor speed model is constructed using the following formula: ， in, represents the compressor speed model, and L represents the real-time compression torque.

9. A system using the compressor speed control method based on air cooling and heat exchange analysis as claimed in claim 1, characterized in that: The system comprises: The air cooling and heating analysis module is used to perform air cooling and heating exchange analysis using pre-built temperature sensors according to a preset control duration, obtain a real-time indoor temperature set and a real-time outdoor temperature set, and calculate a real-time temperature difference based on the real-time indoor temperature set and the real-time outdoor temperature set, wherein the temperature sensors include: an indoor temperature sensor and an outdoor temperature sensor; A fast model building module is used to obtain a user-set temperature and an initial indoor temperature, measure the indoor cooling process based on the user-set temperature and the initial indoor temperature, obtain a cooling process factor, obtain a maximum compression speed based on a pre-built compressor, and build a fast speed model based on the maximum compression speed, the cooling process factor and a preset standard cooling threshold; A target flow calculation module is used to measure the original injection flow of the low-temperature gaseous refrigerant, calculate the original flow difference according to the original injection flow and a preset standard injection flow, perform integral transformation on the original flow difference to obtain a flow integral factor, and perform flow regulation on the original injection flow according to the flow integral factor, the real-time temperature difference and a preset flow gain factor to obtain a target injection flow; The compression speed control module is used to collect the injection pressure and the outflow pressure of the compressor, calculate the compression pressure difference based on the injection pressure and the outflow pressure, calculate the power of the compressor according to the compression pressure difference, the target injection flow rate and the preset compression efficiency, obtain the real-time compression power, measure the real-time compression torque of the compressor, construct a compressor speed model according to the rapid speed model, the real-time compression power, the real-time compression torque and the cooling process factor, and control the compressor speed based on the compressor speed model.

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