Control method of compressor system, compressor system and air conditioner

Abstract

According to the control method of the compressor system, the compressor system and the air conditioner, the real-time operation efficiency parameters of all the compressors are accurately calculated by obtaining the operation state data of all the compressors, and the flow of the refrigerant flowing into the heat dissipation module is dynamically controlled based on the parameters; and the operation efficiency of each compressor approaches the target operation efficiency parameter. Compared with a traditional heat dissipation control mode that passive adjustment is conducted only through temperature data, the method can start from the matching relation of power and power consumption, the heat dissipation requirement is actively adjusted, and more accurate heat dissipation control is achieved. By means of the mode, the problem that in the prior art, the heat dissipation control mode of a multi-parallel-connection-compressor system is not accurate enough is effectively solved, the negative effects of excessive or insufficient heat dissipation on the performance and the service life of the compressors are avoided, and the reliability, the stability and the energy efficiency level of the system are remarkably improved.

Description

Technical Field

[0001] The present invention relates to the technical field of compressors, and in particular to a control method of a compressor system, a compressor system and an air conditioner. Background Art

[0002] A multi-compressor system is an air conditioning system consisting of multiple compressors that are connected in parallel to share the cooling or heating tasks of the system. Currently, multi-compressor systems are widely used in large commercial and industrial refrigeration equipment.

[0003] In a system of multiple integrated compressors connected in parallel, there is a technical problem that the heat dissipation control method is not precise enough. Summary of the invention

[0004] The purpose of the present invention is to overcome the above-mentioned technical deficiencies and provide a control method for a compressor system, a compressor system and an air conditioner to solve the technical problem in the related art that the heat dissipation control method is not accurate enough in a system of multiple parallel integrated compressors.

[0005] In order to achieve the above technical objectives, the present invention adopts the following technical solutions:

[0006] In a first aspect, the present invention provides a control method for a compressor system, the method being applied to the compressor system, the compressor system comprising at least two compressors, and at least some of the compressors being configured with a heat dissipation module to perform heat dissipation on the corresponding compressors; the method comprising:

[0007] Acquire the operating status data of each compressor in the compressor system; wherein the operating status data includes: current data and voltage data;

[0008] Based on the operating status data, determining real-time operating efficiency parameters of each compressor;

[0009] According to the real-time operating efficiency parameter, at least the refrigerant flow rate flowing into the heat dissipation module of the corresponding compressor is controlled so that the real-time operating efficiency parameter of the corresponding compressor approaches a preset target operating efficiency parameter.

[0010] In a second aspect, the present invention provides a compressor system, the system comprising:

[0011] At least two compressors;

[0012] At least two heat dissipation modules, corresponding to the compressor, for dissipating heat for the compressor;

[0013] A controller is used to obtain operating status data of each compressor in the compressor system, wherein the operating status data includes current data and voltage data, and based on the operating status data, determine the real-time operating efficiency parameters of each compressor, and then according to the real-time operating efficiency parameters, at least control the refrigerant flow rate flowing into the heat dissipation module of the corresponding compressor, so that the real-time operating efficiency parameters of the corresponding compressor approach the preset target operating efficiency parameters.

[0014] In a third aspect, the present invention provides an air conditioner, comprising a controller, wherein the controller is used to execute the above-mentioned control method or comprises the above-mentioned compressor system.

[0015] Beneficial effects:

[0016] The present invention obtains the operating status data of each compressor, accurately calculates the real-time operating efficiency parameters of each compressor, and dynamically controls the refrigerant flow rate flowing into the heat dissipation module based on this parameter, so that the operating efficiency of each compressor approaches the target operating efficiency parameter. Compared with the traditional heat dissipation control method that only relies on temperature data for passive adjustment, this method can actively adjust the heat dissipation requirements based on the matching relationship between power and power consumption to achieve more accurate heat dissipation control. In this way, the problem of inaccurate heat dissipation control methods in multiple parallel compressor systems in the prior art is effectively solved, the negative impact of excessive or insufficient heat dissipation on compressor performance and life is avoided, and the reliability, stability and energy efficiency of the system are significantly improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a flow chart of a control method of a compressor system provided by an embodiment of the present invention;

[0018] Figure 2 is a flow chart of a control method of a compressor system provided by an embodiment of the present invention;

[0019] Figure 3 is a flow chart of a control method of a compressor system provided by an embodiment of the present invention;

[0020] Figure 4 4 is a block diagram of a compressor system provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0021] In order to enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of this application.

[0022] In related technologies, multiple parallel integrated compressor systems are widely used in large commercial and industrial refrigeration equipment, such as central air conditioners, cold storage, and temperature control equipment. This type of compressor system can provide greater cooling or heating capacity by connecting multiple compressors in parallel, and can also be flexibly adjusted according to load changes to ensure efficient operation of the compressor system under different workloads. In order to ensure that these compressors maintain optimal performance during operation, heat dissipation management is particularly important. In these compressor systems, each compressor can be equipped with an independent heat dissipation module, which is responsible for effectively dissipating the heat generated by the compressor during operation to prevent the compressor from being inefficient or damaged due to excessive temperature.

[0023] In the related art, the heat dissipation control method of multiple parallel integrated compressor systems is based on temperature control, that is, indirectly adjusting the refrigerant flow rate by setting a temperature threshold. It is understandable that, first of all, although the temperature reflects the heat accumulation of the unit, it cannot directly reflect the relationship between the output power and power consumption of the compressor. When the unit is not running at full load, the temperature may be low but the power may be high, or vice versa, the temperature may be high but the power may be low. It is difficult to accurately respond to the actual heat dissipation needs of the unit by simply adjusting the refrigerant flow rate by temperature, which may easily lead to excessive or insufficient heat dissipation. Then, the temperature change has a certain hysteresis, especially in a complex compressor system, the temperature change often lags behind the power change. Even if the temperature in the compressor system reaches the set threshold, the adjustment of the refrigerant flow rate may have missed the best time, resulting in low efficiency of the unit. Finally, under non-full load conditions, due to the inaccuracy of heat dissipation control, the refrigerant flow rate may be too high, resulting in too low a temperature of the heat dissipation module, thereby affecting the working state of the compressor and causing performance degradation; conversely, when the refrigerant flow rate is too low, insufficient heat dissipation may cause the compressor temperature to be too high, thereby reducing the efficiency and stability of the compressor.

[0024] Therefore, in a system of multiple parallel integrated compressors, there is a technical problem that the heat dissipation control method is not accurate enough.

[0025] like Figure 1 As shown, this embodiment provides a control method for a compressor system, the method is applied to the compressor system, the compressor system includes at least two compressors, and at least some of the compressors are configured with a heat dissipation module to perform heat dissipation on the corresponding compressors.

[0026] The method may be performed by a controller of the compressor system, and the method may include:

[0027] Step S12: Acquire the operating status data of each compressor in the compressor system; wherein the operating status data includes: current data and voltage data.

[0028] In this embodiment, the compressor system includes at least two compressors, for example, three, five or even ten compressors, etc. The at least two compressors can be connected in parallel or in series.

[0029] In this embodiment, the compressor system may be a plurality of parallel integrated compressor systems. It is understandable that the plurality of parallel integrated compressor systems are composed of a plurality of compressors connected in parallel. The plurality of parallel integrated compressor systems may dynamically adjust the operating state and output power of the compressors to adapt to different load requirements. The plurality of parallel integrated compressor systems may share a heat dissipation module, or may configure a heat dissipation module for each compressor separately.

[0030] In this embodiment, the compressor system may also be a modular compressor system. For example, the modular compressor system may be composed of a plurality of modular units, each of which includes a compressor and an independent heat dissipation unit.

[0031] In this embodiment, the compressor system may also be a distributed compressor system.

[0032] In this embodiment, the compressor system may also be a central air conditioning compressor system.

[0033] In this embodiment, in the compressor system, some compressors may be configured with heat dissipation modules to dissipate heat for the corresponding compressors, or all compressors may be configured with corresponding heat dissipation modules to dissipate heat for the compressors.

[0034] In this embodiment, the heat dissipation module may be a power heat dissipation module to dissipate heat for the inverter, the control board and the power devices of the compressor.

[0035] Specifically, the heat dissipation module can be a heat exchanger for transferring the heat absorbed from the frequency converter, the control board and the power device to the refrigerant. The heat exchanger can be a heat exchanger of various shapes and can be made of high-efficiency heat transfer materials (aluminum or copper) to improve the heat dissipation efficiency. The heat exchanger can be a direct contact heat exchanger (the refrigerant is in direct contact with the heat source) or an indirect contact heat exchanger (heat conduction is carried out through a heat conduction plate). It is understandable that the frequency converter will generate a large amount of heat during operation, and the heat dissipation module will take away the heat in time through the flow of refrigerant to prevent efficiency loss or failure caused by overheating. The control board is the core control unit of the compressor, and its stable operation directly affects the performance of the compressor. The heat dissipation module keeps the temperature of the control board within a safe range to avoid damage to electronic components or data errors caused by high temperature.

[0036] In this embodiment, the heat dissipation module may also be a fan, which removes heat from the inverter, control board, power device and other high-temperature components of the compressor by forced air flow, thereby achieving efficient heat dissipation. The fan may be an axial flow fan, a centrifugal fan or a mixed flow fan, etc.

[0037] In this embodiment, the heat dissipation module may also be a refrigerant spray radiator. For example, the refrigerant may be sprayed directly onto the surface of the component that needs to dissipate heat, and the heat may be removed by phase change or convection of the refrigerant. For example, coolant or cooling gas may be sprayed directly.

[0038] In this embodiment, the object of heat dissipation of the heat dissipation module may also be the compressor motor. It is understandable that the compressor motor generates high heat during operation, especially under high frequency or high load operation, and the efficiency may be affected by overheating.

[0039] In this embodiment, the heat dissipation object of the heat dissipation module may also be the bearing and the lubrication system. It is understandable that the bearing of the compressor will generate heat due to friction when running at a high speed, and the lubrication system will also heat up during the transmission process.

[0040] In this embodiment, the object of heat dissipation of the heat dissipation module may also be the auxiliary controller. It is understandable that in addition to the main control board, the auxiliary controller (sensor module or communication module) may also generate heat.

[0041] In this embodiment, the refrigerant used by the heat dissipation module can be a liquid refrigerant or a gas refrigerant. Specifically, the liquid refrigerant can be a water-based refrigerant. For example, it can cool components that require medium heat dissipation intensity, such as inverters and control panels. The liquid refrigerant can also be an oil-based refrigerant. The liquid refrigerant can also be an industrial coolant, etc. The gas refrigerant can be an air refrigerant or a nitrogen refrigerant.

[0042] In this implementation, the acquisition action may be represented as the controller sampling the operation status data through a preset sampling device to obtain the operation status data.

[0043] Specifically, the preset sampling device may be a current data sampling device, for example, a current sensor (Hall effect current sensor or shunt). The preset sampling device may also be a voltage data sampling device, for example, a voltage sensor (resistance divider or Hall voltage sensor). It is understood that the current sensor and the voltage sensor are preset with a sampling frequency to achieve high-precision monitoring of the operating state of the compressor, and provide accurate data support for subsequent steps (such as matching control of power and refrigerant flow).

[0044] In this embodiment, the current data may further include input current data and output current data.

[0045] In this implementation, the voltage data may further include input voltage data and output voltage data.

[0046] In this embodiment, the current data sampling device can be arranged on the main circuit of the compressor power input terminal to perform sampling on the input current data. For example, it can be arranged between the main power switch and the inverter input terminal to collect the current data entering the compressor system.

[0047] In this embodiment, the current data sampling device can be arranged at the compressor output end to sample the output current data. For example, it can be arranged between the output side of the inverter and the input end of the compressor motor to collect the output current data when the compressor motor is running.

[0048] In this embodiment, the voltage data sampling device can be arranged at the compressor power input terminal to perform sampling on the input voltage data, for example, arranged between the main power switch and the inverter input terminal, adjacent to the input current sampling device.

[0049] In this embodiment, the voltage data sampling device can be arranged at the output end of the frequency converter, close to the input end of the compressor motor, to perform sampling on the output voltage data.

[0050] In this embodiment, the operating status data may also include temperature data of each compressor. For example, the temperature data may be sampled by a temperature data acquisition device. The temperature data acquisition device may be a thermocouple, a thermistor, or an infrared temperature sensor, etc. In this embodiment, the temperature data acquisition device may be disposed on a compressor housing, a frequency converter, or a control panel, etc.

[0051] In this embodiment, the operating status data may also include the phase difference (phase angle) between the current and voltage of each compressor. The phase angle may be used to calculate the actual power and further calculate the power factor.

[0052] In this embodiment, the controller may be a programmable logic controller (PLC).

[0053] In this embodiment, the controller may be an industrial computer (IPC).

[0054] In this embodiment, the controller may be an embedded microcontroller unit (MCU).

[0055] In this embodiment, the controller may be a digital signal processor (DSP).

[0056] Step S14: Based on the operating status data, determine the real-time operating efficiency parameters of each compressor.

[0057] In this embodiment, the real-time operating efficiency parameter may be a parameter representing the energy utilization efficiency of the compressor.

[0058] In this embodiment, the real-time operating efficiency parameter may be an energy efficiency ratio. It is understood that the energy efficiency ratio is a ratio of output power to input power, and is used to measure the energy efficiency of the compressor.

[0059] In this embodiment, the real-time operating efficiency parameter may be a power factor. It is understood that the power factor is the ratio of actual power to apparent power, reflecting the utilization efficiency of electric energy.

[0060] In this embodiment, the real-time operating efficiency parameter may also be a load ratio. It is understood that the load ratio is the ratio of the current operating load to the maximum rated load, indicating the load utilization of the compressor.

[0061] In some embodiments, the real-time operating efficiency parameter may also be thermal efficiency.

[0062] In this embodiment, the controller may calculate input power based on input current data and input voltage data, calculate output power based on output current data and output voltage data, and further calculate energy efficiency ratio based on input power and output power.

[0063] In this embodiment, the controller can calculate the apparent power based on the input current data and the input voltage data, and then calculate the actual power based on the input current data, the input voltage data and the phase angle. Finally, the power factor is calculated based on the apparent power and the actual power.

[0064] In this embodiment, the controller can calculate the input power based on the input current data and the input voltage data, and use the input power as the current operating power, or calculate the output power based on the output current data and the output voltage data, and use the output power as the current operating power. Then, the rated power of the compressor is retrieved. Finally, the load rate is calculated based on the current operating power and the rated power.

[0065] Step S16: According to the real-time operating efficiency parameter, at least the refrigerant flow rate flowing into the heat dissipation module of the corresponding compressor is controlled so that the real-time operating efficiency parameter of the corresponding compressor approaches a preset target operating efficiency parameter.

[0066] In this embodiment, the real-time operating efficiency parameter can characterize the precise matching of the power consumption and power of the compressor, that is, the working state of the compressor is reflected through the relationship between the power consumption (input power) and the compressor output power (load capacity). By controlling the refrigerant flow rate flowing into the heat dissipation module of the compressor, so that the real-time operating efficiency parameter approaches the preset target operating efficiency parameter, the compressor can be precisely controlled, thereby improving the overall performance and energy efficiency ratio of the compressor system.

[0067] In this embodiment, the real-time operating efficiency parameters of the compressor can be obtained by real-time sampling and calculation of the above-mentioned current, voltage, power and other data, which reflect the actual energy efficiency status of the compressor. When the power consumption and power are properly matched, the energy efficiency ratio of the compressor will reach the optimal level, which is manifested as lower power consumption and higher work output. Through the real-time operating efficiency parameters, the heat dissipation requirements of the compressor under different loads can be quantified. This parameter is not only an indirect expression of temperature, but is directly related to the actual power consumption and load, and can provide a more accurate indication of the heat dissipation requirements.

[0068] It is understandable that while an increase in temperature generally indicates an increase in the compressor workload, the temperature itself does not directly reflect the specific extent of the cooling demand. Through direct monitoring of power consumption and power, the cooling demand can be judged more accurately, because power not only includes the output capacity of the equipment (such as the compressor workload), but also covers the energy consumption when the compressor is running. When the power consumption of the compressor increases, the cooling demand increases accordingly, and the controller can improve the cooling effect by adjusting the refrigerant flow. Conversely, when the power consumption decreases, the controller can reduce the refrigerant flow to avoid excessive cooling.

[0069] It is also understandable that in traditional temperature-controlled cooling, temperature detection often lags behind actual demand, especially when the load fluctuates greatly or the environment changes rapidly, the adjustment of the cooling system often lags behind the actual temperature change. The control method based on real-time operating efficiency parameters can achieve faster adjustments and faster response speeds. Changes in real-time operating efficiency parameters (power consumption, output power) can be quickly fed back to the controller, and the controller adjusts the refrigerant flow in time based on these data to ensure accurate matching of the cooling system and avoid the delay effect of excessively high or low temperatures.

[0070] In this embodiment, the controller may control the refrigerant flow rate flowing into the heat dissipation module of the corresponding compressor based on the real-time operating efficiency parameter, so that the real-time operating efficiency parameter of the corresponding compressor approaches a preset target operating efficiency parameter.

[0071] Specifically, the controller can first compare the real-time operating efficiency parameters of each compressor with the preset target operating efficiency parameters. If the real-time operating efficiency of some compressors is lower than the preset target operating efficiency parameters, it means that the current operating performance of this type of compressor does not meet expectations. The performance may be reduced due to excessively high temperatures, and the refrigerant flow rate needs to be adjusted to enhance heat dissipation. It may also be that the performance is reduced due to excessively low temperatures, and the refrigerant flow rate also needs to be adjusted to enhance heat dissipation.

[0072] If the real-time operating efficiency of some compressors reaches or exceeds the preset target operating efficiency parameters, it means that the current operating status of such compressors is good and there is no need to adjust the refrigerant flow rate, and the status quo can be maintained.

[0073] Therefore, in this embodiment, a compressor whose real-time operating efficiency is lower than a preset target operating efficiency parameter can be defined as a target compressor. The refrigerant flow rate of the heat dissipation module of the target compressor needs to be adjusted.

[0074] In this embodiment, the refrigerant flow rate can be adjusted based on the output power data of the target compressor. Specifically, an output power threshold can be pre-set. If the output power data is greater than the output power threshold, it means that the load is high and heat dissipation needs to be enhanced. If the output power data is less than the output power threshold, the refrigerant flow rate can be reduced.

[0075] In this embodiment, when the heat dissipation module is a heat exchanger, the compressor system can be configured with a refrigerant flow regulating device (e.g., a master control valve and a sub-control valve) for regulating the flow of the refrigerant in each heat exchanger. Therefore, if the output power data is greater than the output power threshold, the controller can increase the flow of the refrigerant in the heat exchanger by controlling the refrigerant flow regulating device. Correspondingly, if the output power data is less than the output power threshold, the controller can reduce the flow of the refrigerant in the heat exchanger by controlling the refrigerant flow regulating device. Specifically, the master control valve can be used to adjust the total amount of refrigerant flow in the entire compressor system. The sub-control valve can be used to adjust the fine adjustment of the refrigerant flow in each heat exchanger to achieve personalized control of the heat dissipation requirements of a single compressor. If the output power data is greater than the output power threshold, the controller can control the master control valve to increase the overall refrigerant flow of the compressor system to provide more cooling capacity. According to the specific needs of each compressor, the refrigerant flow of each heat exchanger can be further finely adjusted. For example, for a compressor with a higher load, the sub-control valve will further increase the refrigerant flow in the compressor heat exchanger. Accordingly, if the output power data is less than the output power threshold, the controller may reduce the refrigerant flow rate by closing or reducing the opening of the refrigerant flow regulating device (eg, the main control valve and the sub-control valve).

[0076] In this embodiment, when the heat dissipation module is a fan, if the output power data is greater than the output power threshold, the controller can increase the fan speed, thereby increasing the air flow (gas refrigerant) so that heat is dissipated from the compressor surface more quickly. If the output power data is less than the output power threshold, the controller can reduce the fan speed.

[0077] In this embodiment, the refrigerant flow rate can also be adjusted based on the temperature data of the target compressor. For example, if the temperature data of the target compressor exceeds a preset safety range, the controller can increase the refrigerant flow rate to enhance heat dissipation, help the compressor lower its temperature, and avoid overheating causing efficiency loss or damage.

[0078] In this embodiment, the refrigerant flow rate can also be adjusted based on the vibration and noise data of the target compressor. For example, if the compressor vibrates greatly, it may indicate that it is not working properly or is overloaded. At this time, it is possible to determine whether the refrigerant flow rate needs to be increased by monitoring the vibration sensor data. Increasing the refrigerant flow rate may help reduce overheating and thus reduce equipment vibration. Correspondingly, abnormal noise can also be a manifestation of excessive load or high temperature of the compressor. The controller can determine whether the refrigerant flow rate needs to be adjusted to improve the operating condition of the compressor based on the noise data.

[0079] In this embodiment, the refrigerant flow rate can also be adjusted based on the voltage fluctuation data or current fluctuation data of the target compressor. It is understandable that if the voltage or current fluctuation of the compressor is large (for example, the power supply is unstable or the compressor has current fluctuations), the controller can determine whether to increase the refrigerant flow rate based on the change in current / voltage. Large fluctuations may cause the compressor efficiency to decrease, and increasing the refrigerant flow rate helps reduce the risk of compressor failure.

[0080] In this embodiment, the refrigerant flow rate flowing into the heat dissipation module of the corresponding compressor can be controlled according to the real-time operating efficiency parameters, and the operating frequency of the compressor can be controlled while the total output power of each compressor remains unchanged, so that the real-time operating efficiency parameters of the corresponding compressor approach the preset target operating efficiency parameters.

[0081] It is understandable that the main function of controlling the refrigerant flow rate is to adjust the heat dissipation effect, which in turn affects the temperature inside the compressor. When the compressor is operating at a higher load, the heat generated increases. If the heat dissipation is insufficient, the temperature of the compressor will be too high, resulting in a decrease in efficiency. By increasing the refrigerant flow rate, the heat dissipation effect can be enhanced, and more heat can be taken away, thereby avoiding excessive temperatures and keeping the compressor in a higher efficiency state. When the compressor load is low, less heat is generated, and reducing the refrigerant flow rate can avoid excessive heat dissipation. Excessive cooling not only wastes energy, but may also cause the compressor efficiency to be lower than expected, because excessive cooling affects the flow of the refrigerant and the heat load ratio of the compressor. Therefore, by accurately adjusting the refrigerant flow rate, the operating temperature and load of the compressor can be kept within the optimal range, thereby ensuring that its efficiency parameters are close to or reach the preset target efficiency.

[0082] The control method of the compressor system provided in this embodiment obtains the operating status data (including current and voltage data) of each compressor, accurately calculates the real-time operating efficiency parameters of each compressor, and dynamically controls the refrigerant flow rate flowing into the heat dissipation module based on this parameter, so that the operating efficiency of each compressor approaches the target operating efficiency parameter. Compared with the traditional heat dissipation control method that only relies on temperature data for passive adjustment, this method can actively adjust the heat dissipation requirements based on the matching relationship between power and power consumption to achieve more accurate heat dissipation control. In this way, the problem of inaccurate heat dissipation control methods in multiple parallel compressor systems in the prior art is effectively solved, the negative impact of excessive or insufficient heat dissipation on compressor performance and life is avoided, and the reliability, stability and energy efficiency of the system are significantly improved.

[0083] In some embodiments, the current data includes input current data and output current data, the voltage data includes input voltage data and output current data; the real-time operating efficiency parameter is an energy efficiency ratio parameter of the compressor; the step of determining the real-time operating efficiency parameter of each compressor according to the operating status data includes:

[0084] Step S142: Calculating input power data of each compressor based on the input current data and the input voltage data.

[0085] Step S144: Calculating the output power data of each compressor based on the output current data and the output voltage data.

[0086] Step S146: Calculate the energy efficiency ratio parameters of each compressor based on the input power data and the output power data.

[0087] This embodiment obtains the input current, voltage data and the output current, voltage data, and calculates the input power and output power based on these data to obtain the energy efficiency ratio parameters of the compressor. This method can accurately reflect the real-time operating efficiency of the compressor, avoids the traditional control method that only relies on temperature, and provides a more direct and accurate means of energy efficiency monitoring. By calculating the energy efficiency ratio in real time, the working state of the compressor can be adjusted in time, and the matching of power consumption and power output can be optimized, thereby improving the operating efficiency of the compressor, reducing energy consumption, extending the service life of the equipment, and reducing the risk of failure. This method enables the compressor system to always maintain the best energy efficiency state under different working conditions and achieve the goal of energy conservation and emission reduction.

[0088] like Figure 2 As shown, in some embodiments, the step of controlling at least the refrigerant flow rate flowing into the heat dissipation module of the corresponding compressor according to the real-time operating efficiency parameter so that the real-time operating efficiency parameter of the corresponding compressor approaches the preset target operating efficiency parameter includes:

[0089] Step S162: determining a target compressor according to the real-time operating efficiency parameter and a preset target operating efficiency parameter; wherein the target compressor is a compressor whose real-time operating efficiency parameter is lower than the target operating efficiency parameter.

[0090] In this embodiment, the operating efficiency parameter may be an energy efficiency ratio. The preset target operating efficiency parameter may be a preset energy efficiency ratio threshold, for example, an optimal energy efficiency ratio value set according to the working environment, design specifications and energy efficiency target of the compressor system. In some embodiments, the preset target operating efficiency parameter may also be dynamically adjusted according to specific application requirements and load changes of the equipment.

[0091] In this embodiment, if the real-time operating efficiency parameter (e.g., energy efficiency ratio) of a compressor is lower than the real-time operating efficiency parameter, the controller may regard it as a target compressor and perform corresponding heat dissipation adjustment to improve its operating efficiency, thereby optimizing the energy efficiency performance of the entire compressor system.

[0092] Step S164: Based on the output power data of the target compressor, control the refrigerant flow rate flowing into the heat dissipation module of the corresponding compressor so that the real-time operating efficiency parameter of the corresponding compressor approaches the preset target operating efficiency parameter.

[0093] In this embodiment, once the target compressor is determined, the refrigerant flow rate of the heat dissipation module of the corresponding compressor can be controlled based on the output power data calculated in the above steps, so that the real-time operating efficiency parameter of the corresponding compressor approaches the preset target operating efficiency parameter. It is understandable that there is a certain relationship between the output power data and the heat dissipation demand of the compressor. In most cases, the greater the output power of the compressor, the greater the refrigerant flow rate required by the heat dissipation module.

[0094] In this embodiment, a power threshold can be preset. When the output power of the target compressor exceeds the power threshold, it means that its load is heavy and the heat dissipation demand is high. At this time, it is necessary to increase the refrigerant flow rate to enhance the heat dissipation effect and keep the compressor in an efficient operating state. Specifically, if the output power of the target compressor is greater than the preset threshold, the controller can increase the refrigerant flow rate flowing into the heat dissipation module of the target compressor through a refrigerant flow regulating device (e.g., a valve, a pump) to help it dissipate heat more effectively, thereby avoiding a decrease in operating efficiency due to overheating. On the contrary, if the output power of the target compressor is lower than the threshold, it means that its load is light and the heat dissipation demand is small. At this time, the controller will reduce the refrigerant flow rate flowing into the heat dissipation module to avoid overcooling and energy waste.

[0095] This embodiment accurately determines the target compressor that needs to be adjusted by comparing the real-time operating efficiency parameters with the preset target operating efficiency parameters, and controls the refrigerant flow of the heat dissipation module based on the output power data of the target compressor. This method can achieve refined heat dissipation management of the compressor under different loads and operating conditions, optimize the energy efficiency ratio of the compressor by actively adjusting the refrigerant flow, and avoid performance fluctuations caused by excessive or insufficient heat dissipation. Compared with traditional temperature control or static heat dissipation methods, this embodiment provides a more dynamic and intelligent heat dissipation control solution that can maintain the optimal working efficiency of the compressor under real-time monitoring, improve the overall performance of the system, reduce energy consumption, and effectively extend the service life of the equipment.

[0096] like Figure 3 As shown, in some embodiments, the step of controlling the refrigerant flow rate flowing into the heat dissipation module of the corresponding compressor based on the output power data of the target compressor so that the real-time operating efficiency parameter of the corresponding compressor approaches the preset target operating efficiency parameter includes:

[0097] Step S1642: Determine whether the output power data of the target compressor is higher than a preset output power threshold.

[0098] In this embodiment, the controller can compare the output power data calculated in the above steps with the preset output power threshold. If it is higher than the preset output power threshold, it means that the target compressor is heavily loaded and the heat dissipation requirement is high. If it is lower than the preset output power threshold, it means that the target compressor is lightly loaded and the heat dissipation requirement is low.

[0099] Step S1644: when the output power data of the target compressor is higher than the output power threshold, increase the refrigerant flow of the heat dissipation module of the target compressor.

[0100] In this embodiment, the controller can increase the refrigerant flow rate of the heat dissipation module of the target compressor by controlling the refrigerant flow rate regulating device. It can be understood that the heat dissipation module is configured with a refrigerant flow rate regulating device.

[0101] Specifically, the refrigerant flow regulating device may be a control valve. The control valve may be an electric or mechanical control valve. When the output power data of the target compressor is higher than the output power threshold, the controller may adjust the opening of the control valve to control the refrigerant flow to ensure that the refrigerant flow matches the actual heat dissipation demand of the compressor.

[0102] More specifically, first, the controller obtains the actual opening of the current control valve through a valve sensor or feedback signal. The current actual opening (for example, 30% or 60%) reflects the size of the current refrigerant flow. Then, the controller calculates the adjustment amount of the refrigerant flow based on the difference between the output power data of the target compressor and the output power threshold. The adjustment amount can be used to determine how much the opening of the control valve needs to be increased to achieve the required refrigerant flow increment. Finally, the controller generates a corresponding control signal based on the adjustment amount and sends the control signal to the control valve to increase its opening and increase the refrigerant flow. For example: the current opening is 40%, and it is calculated that it needs to increase by 10%. The controller adjusts the valve opening to 50%. It can be understood that the adjustment of the valve opening is dynamic, and the controller adjusts the opening in real time as the output power data changes.

[0103] The refrigerant flow regulating device may be a refrigerant flow pump (eg, a variable frequency pump). The controller may control the refrigerant flow by adjusting the speed of the refrigerant flow pump. Increasing the speed of the refrigerant flow pump may increase the flow rate of the refrigerant, thereby increasing the flow rate.

[0104] In this embodiment, when the refrigerant is a gaseous refrigerant, the controller can control the blowing volume of the preset fan to increase the refrigerant flow of the heat dissipation module (e.g., metal fin heat exchanger) of the target compressor. For example, a variable frequency drive is installed on the fan, and the controller increases the air volume by adjusting the frequency of the fan, thereby improving the heat dissipation efficiency of the heat exchanger.

[0105] Step S1646: When the output power data of the target compressor is less than or equal to the output power threshold, reduce the refrigerant flow of the heat dissipation module of the target compressor.

[0106] In this embodiment, the controller can increase the refrigerant flow rate of the heat dissipation module of the target compressor by controlling the refrigerant flow rate regulating device. It can be understood that the heat dissipation module is configured with a refrigerant flow rate regulating device.

[0107] In this embodiment, the refrigerant flow regulating device can be a control valve or a refrigerant flow pump.

[0108] In this embodiment, when the refrigerant is a gaseous refrigerant, the controller can control the blowing volume of the preset fan to reduce the refrigerant flow (eg, air) of the heat dissipation module (eg, metal fin heat exchanger) of the target compressor.

[0109] This embodiment can effectively optimize the heat dissipation control of the compressor by intelligently adjusting the refrigerant flow rate based on the output power data of the target compressor. Specifically, the system decides whether to increase or decrease the refrigerant flow rate in the heat dissipation module by judging whether the output power of the target compressor is higher than the preset output power threshold. This dynamic adjustment strategy can increase the refrigerant flow rate in a timely manner when the compressor load is heavy, ensuring that the compressor heat dissipation needs are fully met, thereby avoiding efficiency reduction or failure due to overheating; and reduce the refrigerant flow rate when the load is light to avoid unnecessary energy waste. This control method can accurately match the actual operating state of the compressor, ensuring that the system maintains efficient and stable operation under different working conditions, improving the energy utilization rate of the compressor, extending the service life of the equipment, and improving the operating performance of the entire compressor system.

[0110] In some embodiments, the step of controlling the refrigerant flow rate flowing into the heat dissipation module of the corresponding compressor based on the output power data of the target compressor so that the real-time operating efficiency parameter of the corresponding compressor approaches the preset target operating efficiency parameter includes:

[0111] Step S1647: Calculate the average value of the historical output power data of the target compressor in at least one time window.

[0112] In this embodiment, the historical output power data may be represented as output power data before the current output power data. The before may be represented as half an hour ago, one hour ago, ten minutes ago, etc. It is understandable that the controller may store historical output power data for a certain period of time, for example, historical output power data within one month.

[0113] In this implementation, the time window may be expressed as a unit of time, such as one minute, two minutes, or ten minutes, etc.

[0114] Therefore, it can be understood that the historical output power data of the at least one time window can be understood as the historical output power data of at least one time window before the current time point (that is, the time point when the output power data is calculated in step S144).

[0115] Therefore, in this embodiment, calculating the average value of the historical output power data of at least one time window of the target compressor may include: first obtaining the historical output power data of at least one time window, and then calculating its average value based on the historical output power data of the at least one time window.

[0116] It is understandable that by calculating the average value of historical output power data within a time window, short-term fluctuations and noise can be better eliminated, ensuring that decisions are based on the actual trend of compressor operation rather than temporary fluctuations. For example, the compressor may experience sharp fluctuations in power data due to instantaneous load or short-term environmental changes. Directly relying on the output power data at a single moment to determine whether to adjust the heat dissipation may lead to over-regulation. By comparing with the historical average value, its actual operating status can be more reliably reflected.

[0117] It can also be understood that calculating the average value of the historical output power data of at least one time window of the target compressor is actually to understand the "normal" operation of the target compressor within a certain period of time. By comparing the current output power data with this average value, it can be determined whether the current power output exceeds the normal fluctuation range. If the current power is significantly higher than the historical average, it means that the compressor may be in a high-load state and the refrigerant flow rate needs to be increased for heat dissipation. On the contrary, if the current power is lower than or equal to the historical average, it means that the compressor load is light or operating normally, and the refrigerant flow rate can be reduced.

[0118] In this embodiment, the number of time windows may be adjusted dynamically. For example, the number of time windows may be adjusted based on the running status data.

[0119] Step S1648: Determine whether the output power data of the target compressor is higher than the average value.

[0120] Step S1649: when the output power data of the target compressor is higher than the average value, increase the refrigerant flow rate of the heat dissipation module of the target compressor.

[0121] In this embodiment, the controller can increase the refrigerant flow rate of the heat dissipation module of the target compressor by controlling the refrigerant flow rate regulating device. It can be understood that the heat dissipation module is configured with a refrigerant flow rate regulating device.

[0122] Specifically, the refrigerant flow regulating device may be a control valve. The control valve may be an electric or mechanical control valve. When the output power data of the target compressor is higher than the output power threshold, the controller may adjust the opening of the control valve to control the refrigerant flow to ensure that the refrigerant flow matches the actual heat dissipation demand of the compressor.

[0123] More specifically, first, the controller obtains the actual opening of the current control valve through a valve sensor or feedback signal. The current actual opening (for example, 30% or 60%) reflects the size of the current refrigerant flow. Then, the controller calculates the adjustment amount of the refrigerant flow based on the difference between the output power data of the target compressor and the output power threshold. The adjustment amount can be used to determine how much the opening of the control valve needs to be increased to achieve the required refrigerant flow increment. Finally, the controller generates a corresponding control signal based on the adjustment amount and sends the control signal to the control valve to increase its opening and increase the refrigerant flow. For example: the current opening is 40%, and it is calculated that it needs to increase by 10%. The controller adjusts the valve opening to 50%. It can be understood that the adjustment of the valve opening is dynamic, and the controller adjusts the opening in real time as the output power data changes.

[0124] The refrigerant flow regulating device may be a refrigerant flow pump (eg, a variable frequency pump). The controller may control the refrigerant flow by adjusting the speed of the refrigerant flow pump. Increasing the speed of the refrigerant flow pump may increase the flow rate of the refrigerant, thereby increasing the flow rate.

[0125] In this embodiment, when the refrigerant is a gaseous refrigerant, the controller can control the blowing volume of the preset fan to increase the refrigerant flow of the heat dissipation module (e.g., metal fin heat exchanger) of the target compressor. For example, a variable frequency drive is installed on the fan, and the controller increases the air volume by adjusting the frequency of the fan, thereby improving the heat dissipation efficiency of the heat exchanger.

[0126] Step S16410: When the output power data of the target compressor is less than or equal to the average value, reduce the refrigerant flow rate of the heat dissipation module of the target compressor.

[0127] This embodiment analyzes the historical output power data of the target compressor and adopts a heat dissipation control strategy based on historical average values, thereby effectively improving the heat dissipation control accuracy and response speed of the compressor system. Specifically, by calculating the average value of the historical output power data of the target compressor in at least one time window, the controller can dynamically evaluate the operating trend of the compressor and compare it with the current output power data. When the current power data is higher than the average value, the controller will increase the refrigerant flow rate to enhance heat dissipation and ensure that the compressor can still maintain efficient operation at peak load; otherwise, the refrigerant flow rate will be reduced to avoid excessive heat dissipation. This method can more accurately adjust the heat dissipation and avoid overreaction to instantaneous data in traditional heat dissipation control methods, thereby providing a more stable and energy-saving operating environment, and effectively improving the overall energy efficiency and reliability of the compressor system.

[0128] In some embodiments, the heat dissipation module is configured with a refrigerant flow regulating device;

[0129] The step of controlling at least the refrigerant flow rate flowing into the heat dissipation module of the corresponding compressor according to the real-time operating efficiency parameter so that the real-time operating efficiency parameter of the corresponding compressor approaches the target operating efficiency parameter comprises:

[0130] Based on the real-time operating efficiency parameter, each refrigerant flow regulating device is controlled to adjust the refrigerant flow flowing into the heat dissipation module of the corresponding compressor so that the real-time operating efficiency parameter of the corresponding compressor approaches the target operating efficiency parameter.

[0131] In this embodiment, the refrigerant flow regulating device may be a control valve. It is understandable that each heat dissipation module may be equipped with a control valve. The control valve may control the refrigerant flow into the heat dissipation module corresponding to the compressor.

[0132] In this embodiment, the refrigerant flow regulating device can be a main control valve and a sub-control valve. It can be understood that the main control valve can be used to adjust the total amount of refrigerant flow in the entire compressor system. The sub-control valve can be used to adjust the fine adjustment of the refrigerant flow in each heat exchanger to achieve personalized control of the heat dissipation demand of a single compressor. If the output power data is greater than the output power threshold, the controller can control the main control valve to increase the overall refrigerant flow of the compressor system to provide more cooling capacity. According to the specific needs of each compressor, the refrigerant flow of each heat exchanger can be further fine-tuned. For example, for a compressor with a higher load, the sub-control valve will further increase the refrigerant flow in the compressor heat exchanger. Accordingly, if the output power data is less than the output power threshold, the controller can reduce the refrigerant flow by closing or reducing the opening of the refrigerant flow regulating device (e.g., the main control valve and the sub-control valve).

[0133] In this embodiment, the refrigerant flow regulating device may be a refrigerant flow pump (e.g., a variable frequency pump). The controller may control the refrigerant flow by adjusting the speed of the refrigerant flow pump. Increasing the speed of the refrigerant flow pump may increase the flow rate of the refrigerant, thereby increasing the flow rate.

[0134] This embodiment accurately controls the working state of the refrigerant flow regulating device in each heat dissipation module according to the real-time operating efficiency parameters, and dynamically adjusts the refrigerant flow flowing into the corresponding compressor, so that the real-time operating efficiency parameters of the compressor are close to the target operating efficiency parameters. The beneficial effect of this method is that, through real-time monitoring and adjustment, it can accurately match the heat dissipation requirements of the compressor, avoid energy waste caused by excessive refrigerant flow, and insufficient heat dissipation and efficiency reduction caused by insufficient flow. In addition, the adjustment method based on real-time operating efficiency parameters responds quickly and is more accurate. It can be dynamically adjusted according to the operating state and load changes of the compressor, improve the heat dissipation efficiency and operating stability of the system, and at the same time extend the service life of the equipment, reduce operating costs, and achieve the goal of high efficiency and energy saving.

[0135] In some embodiments, the step of controlling at least the refrigerant flow rate flowing into the heat dissipation module of the corresponding compressor according to the real-time operating efficiency parameter so that the real-time operating efficiency parameter of the corresponding compressor approaches a preset target operating efficiency parameter includes:

[0136] According to the real-time operating efficiency parameters, the refrigerant flow rate flowing into the heat dissipation module of the corresponding compressor is controlled, and the operating frequency of the compressor is controlled while the total output power of each compressor remains unchanged, so that the real-time operating efficiency parameters of the corresponding compressor approach the preset target operating efficiency parameters.

[0137] In this embodiment, on the one hand, the refrigerant flow rate flowing into the heat dissipation module of the corresponding compressor can be controlled, and on the other hand, the operating frequency of the compressor can be controlled while the total output power of each compressor remains unchanged, so that the real-time operating efficiency parameters of the corresponding compressor approach the preset target operating efficiency parameters.

[0138] In this embodiment, the controller can control the operating frequency of the compressors in the following manner when the total output power of each compressor remains unchanged, so that the real-time operating efficiency parameters of the corresponding compressors approach the preset target operating efficiency parameters.

[0139] First, the controller can calculate the total output power P required by the compressor system based on the overall demand of the compressor system. total .

[0140] The controller can then monitor the actual output power P of each compressor i, to verify whether the output power of the current compressor system is consistent with the total output power P total Match.

[0141] The controller dynamically allocates the power task of each compressor according to the operating efficiency parameters of each compressor: P i,target , ensuring that the total output power meets P total .

[0142]

[0143] In the formula, N represents the number of compressors, P total Expressed as the total output power required by the compressor system, P i,target It is represented as the power task of the i-th compressor. If the real-time operating efficiency parameters of some compressors are low, the power tasks of these compressors are reduced first, and part of the load is allocated to the compressors with higher real-time operating efficiency parameters. If the efficiency of all compressors is close to the target value, the distribution is kept evenly.

[0144] Finally, the controller can achieve power task allocation and optimize its operating efficiency by adjusting the operating frequency of each compressor. It can be understood that the output power of the compressor is often positively correlated with its operating frequency. Therefore, if the real-time operating efficiency parameter of a compressor is lower than the preset target operating efficiency parameter, the controller can reduce its operating frequency to reduce its load and thus improve energy efficiency. The reduced load can be allocated to compressors with higher operating efficiency, and the operating frequency of these compressors can be appropriately increased to ensure that the total output power remains unchanged.

[0145] In this embodiment, while adjusting the operating frequency, the controller can synchronously adjust the refrigerant flow rate flowing into each compressor heat dissipation module. For example, a compressor with an increased operating frequency can increase more refrigerant flow rate to cope with the increased heat dissipation demand. A compressor with a reduced operating frequency can reduce the refrigerant flow rate to avoid energy waste.

[0146] This embodiment accurately controls the refrigerant flow rate and the operating state of the compressor by combining the real-time operating efficiency parameters and the operating frequency adjustment of the compressor, so that the real-time operating efficiency parameters of each compressor are close to the preset target operating efficiency parameters. The beneficial effect of this method is that in addition to adjusting the refrigerant flow rate to match the heat dissipation requirements, the energy efficiency performance of the compressor is further optimized by adjusting the operating frequency. Controlling the operating frequency helps to balance the load and power consumption of the compressor, thereby improving the energy efficiency ratio and reducing unnecessary energy waste. While ensuring that the total output power remains unchanged, by flexibly adjusting the operating frequency and refrigerant flow rate, it is possible to respond more accurately to changes in the operating state of the compressor, optimize the control strategy of the heat dissipation system, improve the operating efficiency and stability of the overall system, and further improve the long-term operating reliability of the compressor, thereby achieving the effect of energy saving and consumption reduction.

[0147] In some embodiments, the step of controlling the operating frequency of the compressor according to the real-time operating efficiency parameter, while the total output power of each compressor remains unchanged, so that the real-time operating efficiency parameter of the corresponding compressor approaches a preset target operating efficiency parameter, includes:

[0148] Based on the real-time operating efficiency parameter of the compressor, the operating state of the compressor is determined; wherein the operating state includes a full-load operating state, a half-load operating state and a no-load operating state.

[0149] In this embodiment, when the real-time operating efficiency parameter of the compressor reaches or approaches its target operating efficiency parameter, and the output power approaches or reaches the designed maximum output power, the controller can determine that the compressor is in full load operation. At this time, the controller can maintain the compressor to operate at a higher operating frequency (first operating frequency) to ensure that the output power is maximized.

[0150] In this embodiment, when the real-time operating efficiency parameter of the compressor is lower than the target operating efficiency parameter, but is still in a certain load state, and the output power is lower than a certain input power threshold (for example, 60% of the maximum output power), the controller can determine that the compressor is in a half-load operating state. At this time, the controller can adjust the operating frequency of the compressor to a second operating frequency (lower than the frequency at full load) to reduce energy consumption while maintaining a high operating efficiency.

[0151] In this embodiment, when the real-time operating efficiency parameter of the compressor is significantly lower than the ideal state, and the output power is low or close to zero, the controller can determine that the compressor is in a no-load operating state. At this time, the controller can adjust the operating frequency of the compressor to the third operating frequency, or even stop it from running, to avoid unnecessary energy waste.

[0152] When the working state of the compressor is a full-load operating state, the compressor is controlled to operate at a first operating frequency.

[0153] In this embodiment, the controller adjusts the operating frequency of the compressor to a first operating frequency (eg, a maximum frequency) so that the compressor can operate stably under a high load and maintain optimal operating efficiency.

[0154] When the operating state of the compressor is a half-load operating state, the compressor is controlled to operate at a second operating frequency.

[0155] In this embodiment, the controller adjusts the operating frequency of the compressor to a second operating frequency, which is lower than the first operating frequency. At this time, the compressor can still effectively output the required power, but the energy consumption is relatively low, avoiding over-operation. By reducing the operating frequency, the compressor can maintain high energy efficiency when the load is light, reduce unnecessary energy consumption, and maintain its efficient operation under half-load state.

[0156] When the compressor is in a no-load operating state, the compressor is controlled to operate at a third operating frequency or stop operating so that the real-time operating efficiency parameters of each compressor in the compressor system approach the target operating efficiency parameters; wherein the first operating frequency is higher than the second operating frequency, and the second operating frequency is higher than the third operating frequency.

[0157] In this embodiment, the controller adjusts the operating frequency of the compressor to a third operating frequency (e.g., the lowest frequency). At this time, the compressor operates at a low frequency, or if the compressor has almost no load in a no-load state, the controller can choose to stop the compressor to avoid unnecessary energy consumption.

[0158] This embodiment dynamically adjusts the operating frequency of the compressor according to the real-time operating efficiency parameters of the compressor to ensure that the compressor system maintains the best operating efficiency under different load conditions. Specifically, the controller determines the operating state (full load, half load or no load) of each compressor according to its efficiency, and then adjusts the operating frequency under different operating states, so that the real-time operating efficiency parameters of each compressor are close to the preset target efficiency. This method can avoid energy waste by optimizing the operating frequency, improve the overall energy efficiency of the system, extend the service life of the equipment, and better adapt to load changes, ensuring that the compressor system can operate efficiently and stably under different loads, while keeping the total output power of the compressor system unchanged.

[0159] like Figure 4 As shown, this embodiment provides a compressor system, which may include:

[0160] At least two compressors;

[0161] At least two heat dissipation modules, corresponding to the compressor, for dissipating heat for the compressor;

[0162] A controller is used to obtain operating status data of each compressor in the compressor system, wherein the operating status data includes current data and voltage data, and based on the operating status data, determine the real-time operating efficiency parameters of each compressor, and then according to the real-time operating efficiency parameters, at least control the refrigerant flow rate flowing into the heat dissipation module of the corresponding compressor, so that the real-time operating efficiency parameters of the corresponding compressor approach the preset target operating efficiency parameters.

[0163] The compressor system provided in this embodiment calculates the operating efficiency parameters of each compressor in real time based on the operating status data (current and voltage data) of the compressor, and dynamically adjusts the refrigerant flow of the heat dissipation module according to these parameters, so that the system can achieve efficient operation of the compressor. Specifically, the controller accurately adjusts the heat dissipation system according to the deviation between the real-time operating efficiency of the compressor and the target efficiency to ensure that the compressor always maintains the best working efficiency under different load conditions. This active heat dissipation control based on real-time data and efficiency targets can not only optimize the energy consumption of the compressor and reduce the situation of excessive or insufficient heat dissipation, but also extend the service life of the equipment and improve the reliability and operational stability of the overall system. Therefore, the system can improve the performance and efficiency of the compressor system while reducing energy consumption.

[0164] In an embodiment, the compressor system may further include:

[0165] A refrigerant storage tank is used to store the refrigerant.

[0166] In an embodiment, the compressor system may further include:

[0167] The pump body is used to transport the refrigerant stored in the refrigerant storage tank to the heat dissipation module.

[0168] In an embodiment, the compressor system may further include:

[0169] The refrigerant flow regulating device is used to regulate the refrigerant flow flowing into the heat dissipation module corresponding to the compressor.

[0170] In an embodiment, the refrigerant flow regulating device may include:

[0171] Refrigerant main switch control valve and refrigerant sub-switch control valve.

[0172] In one possible and specific embodiment, the above method may include:

[0173] This application is based on the matching of unit power and power consumption to control the active heat dissipation of the unit. By detecting the current and voltage values ​​on the input side, the current and voltage values ​​on the output side and the power factor, the energy efficiency ratio is obtained by calculating the ratio of the current output power and the input power consumption, so as to judge whether the unit is working in the optimal state of the current output power, thereby adjusting the working frequency of each head, and improving the energy efficiency ratio without changing the total output power, so as to achieve the matching of the unit power and power consumption, and achieve the best operation of the unit. The appropriate matching of power and power consumption can ensure that the equipment can meet the use requirements while minimizing energy consumption.

[0174] The change of unit power is mainly achieved by changing the head frequency. There are three clock sources, and the three clock sources correspond to three working modes: full-load working mode, half-load working mode, and no-load working mode. The three working modes correspond to three head control methods: high-frequency operation of the whole head, frequency reduction operation of the whole head, and partial head operation. The control of the head is to dynamically control the collaborative work between multiple heads. Each head works independently and can work at different frequencies to ensure that the unit works at the highest power efficiency ratio output under the current power consumption. In the matching control of the unit based on power and power consumption, the unit operation status is detected, mainly output current detection, output voltage detection, and unit power module temperature detection, so that the power and power consumption are matched in real time to achieve the best operation of the unit.

[0175] In the process of adjusting the power of each head of the unit, the power module is operated at a relatively suitable temperature by matching the power with the heat dissipation system. When the power is increased, the temperature of the corresponding module of the head will increase, so the corresponding head refrigerant switch control valve is increased at the same time to reduce the temperature; when the power is decreased, the temperature of the corresponding module of the head will decrease, so the corresponding head refrigerant switch control valve is decreased at the same time to increase the temperature, and the power module and the refrigerant are heat exchanged through the copper pipe. When in full-load working mode, it is necessary to increase the control valve master valve and the control valve between the heads, which can control the refrigerant to flow to the head with high power and improve the heat dissipation efficiency; when in half-load working mode, one head works at high frequency and the other works at low frequency. According to the matching of power and heat dissipation system, adjust one head control valve to increase and the other head control valve to decrease, and the refrigerant with less heat dissipation can be sent to the head with more refrigerant to improve the refrigerant utilization rate; when in no-load working mode, one head does not work and the other works at low frequency. It is necessary to adjust the control valve master valve, close the control valve of the non-working head, and reduce the control valve of the low-frequency head. At the same time, the power module temperature is monitored in real time, and the temperature is dynamically balanced through the adjustment of the main valve and auxiliary valve, so that it works within the optimal temperature range and improves the reliability and stability of the unit system.

[0176] According to an embodiment of the present invention, an electronic device is provided. The electronic device in this embodiment may include one or more of the following components: a processor, a network interface, a memory, a non-volatile memory, and one or more application programs, wherein the one or more application programs may be stored in the non-volatile memory and configured to be executed by one or more processors, and the one or more programs are configured to execute the method described in the aforementioned method embodiment.

[0177] According to an embodiment of the present invention, a computer-readable storage medium is provided, on which a computer program is stored. When the computer program is executed by a computer, the computer executes the method described in any of the above embodiments.

[0178] According to an embodiment of the present invention, a computer program product including instructions is also provided. When the instructions are executed by a computer, the computer executes a method in any one of the above embodiments.

[0179] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device comprising a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0180] Optionally, the specific examples in this embodiment may refer to the examples described in the above embodiments, and this embodiment will not be described in detail here.

[0181] The serial numbers of the above-mentioned embodiments of the present application are for description only and do not represent the advantages or disadvantages of the embodiments.

[0182] In the above embodiments of the present application, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, please refer to the relevant description of other embodiments.

[0183] The above is only a preferred implementation of the present application. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present application. These improvements and modifications should also be regarded as the scope of protection of the present application.

Claims

1. A method for controlling a compressor system, characterized in that: The method is applied to the compressor system, the compressor system includes at least two compressors, and at least some of the compressors are configured with a heat dissipation module to perform heat dissipation on the corresponding compressors; the method includes: Acquire the operating status data of each compressor in the compressor system; wherein the operating status data includes: current data and voltage data; Based on the operating status data, determining real-time operating efficiency parameters of each compressor; According to the real-time operating efficiency parameter, at least the refrigerant flow rate flowing into the heat dissipation module of the corresponding compressor is controlled so that the real-time operating efficiency parameter of the corresponding compressor approaches a preset target operating efficiency parameter.

2. The method according to claim 1, characterized in that The current data includes input current data and output current data, and the voltage data includes input voltage data and output current data; The real-time operating efficiency parameter is an energy efficiency ratio parameter of the compressor; The step of determining the real-time operating efficiency parameters of each compressor according to the operating status data comprises: Calculating input power data of each compressor based on the input current data and the input voltage data; Calculating output power data of each compressor based on the output current data and the output voltage data; Based on the input power data and the output power data, energy efficiency ratio parameters of each compressor are calculated.

3. The method according to claim 2, characterized in that The step of at least controlling the refrigerant flow rate flowing into the heat dissipation module of the corresponding compressor according to the real-time operating efficiency parameter so that the real-time operating efficiency parameter of the corresponding compressor approaches a preset target operating efficiency parameter includes: Determine a target compressor according to the real-time operating efficiency parameter and a preset target operating efficiency parameter; wherein the target compressor is a compressor whose real-time operating efficiency parameter is lower than the target operating efficiency parameter; Based on the output power data of the target compressor, the refrigerant flow rate flowing into the heat dissipation module of the corresponding compressor is controlled so that the real-time operating efficiency parameter of the corresponding compressor approaches the preset target operating efficiency parameter.

4. The method according to claim 3, characterized in that The step of controlling the refrigerant flow rate flowing into the heat dissipation module of the corresponding compressor based on the output power data of the target compressor so that the real-time operating efficiency parameter of the corresponding compressor approaches the preset target operating efficiency parameter includes: Determining whether the output power data of the target compressor is higher than a preset output power threshold; When the output power data of the target compressor is higher than the output power threshold, increasing the refrigerant flow of the heat dissipation module of the target compressor; When the output power data of the target compressor is less than or equal to the output power threshold, the refrigerant flow rate of the heat dissipation module of the target compressor is reduced.

5. The method according to claim 3, characterized in that: The step of controlling the refrigerant flow rate flowing into the heat dissipation module of the corresponding compressor based on the output power data of the target compressor so that the real-time operating efficiency parameter of the corresponding compressor approaches the preset target operating efficiency parameter includes: Calculate an average value of historical output power data of at least one time window of the target compressor; Determining whether the output power data of the target compressor is higher than the average value; When the output power data of the target compressor is higher than the average value, increasing the refrigerant flow rate of the heat dissipation module of the target compressor; When the output power data of the target compressor is less than or equal to the average value, the refrigerant flow rate of the heat dissipation module of the target compressor is reduced.

6. The method according to claim 1, characterized in that The heat dissipation module is equipped with a refrigerant flow regulating device; The step of controlling at least the refrigerant flow rate flowing into the heat dissipation module of the corresponding compressor according to the real-time operating efficiency parameter so that the real-time operating efficiency parameter of the corresponding compressor approaches the target operating efficiency parameter comprises: Based on the real-time operating efficiency parameter, each refrigerant flow regulating device is controlled to adjust the refrigerant flow flowing into the heat dissipation module of the corresponding compressor so that the real-time operating efficiency parameter of the corresponding compressor approaches the target operating efficiency parameter.

7. The method according to claim 1, characterized in that The step of at least controlling the refrigerant flow rate flowing into the heat dissipation module of the corresponding compressor according to the real-time operating efficiency parameter so that the real-time operating efficiency parameter of the corresponding compressor approaches a preset target operating efficiency parameter includes: According to the real-time operating efficiency parameters, the refrigerant flow rate flowing into the heat dissipation module of the corresponding compressor is controlled, and the operating frequency of the compressor is controlled while the total output power of each compressor remains unchanged, so that the real-time operating efficiency parameters of the corresponding compressor approach the preset target operating efficiency parameters.

8. The method according to claim 7, characterized in that The step of controlling the operating frequency of the compressor according to the real-time operating efficiency parameter and under the condition that the total output power of each compressor remains unchanged so that the real-time operating efficiency parameter of the corresponding compressor approaches the preset target operating efficiency parameter comprises: Based on the real-time operating efficiency parameter of the compressor, determining the operating state of the compressor; wherein the operating state includes a full-load operating state, a half-load operating state and an empty-load operating state; When the working state of the compressor is a full-load operation state, controlling the compressor to operate at a first operating frequency; When the working state of the compressor is a half-load operating state, controlling the compressor to operate at a second operating frequency; When the compressor is in a no-load operating state, the compressor is controlled to operate at a third operating frequency or stop operating so that the real-time operating efficiency parameters of each compressor in the compressor system approach the target operating efficiency parameters; wherein the first operating frequency is higher than the second operating frequency, and the second operating frequency is higher than the third operating frequency.

9. A compressor system, characterized in that: The system comprises: At least two compressors; At least two heat dissipation modules, corresponding to the compressor, for dissipating heat for the compressor; A controller is used to obtain operating status data of each compressor in the compressor system, wherein the operating status data includes current data and voltage data, and based on the operating status data, determine the real-time operating efficiency parameters of each compressor, and then according to the real-time operating efficiency parameters, at least control the refrigerant flow rate flowing into the heat dissipation module of the corresponding compressor, so that the real-time operating efficiency parameters of the corresponding compressor approach the preset target operating efficiency parameters.

10. An air conditioner, characterized in that: The air conditioner comprises a controller for executing the control method described in any one of claims 1 to 8 or comprises a compressor system described in claim 9.

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