Refrigerant flow control method and device, storage medium and refrigeration equipment

Abstract

The embodiment of the invention provides a refrigerant flow control method and device, a computer storage medium and refrigeration equipment, because the consumption power of a refrigerant pump in a fluorine pump refrigeration mode and a mixed mode is far greater than the consumption power of a throttling control, when the actual value of the degree of superheat is smaller than the minimum value of a preset degree of superheat interval, the throttling control is switched on; the working frequency of the refrigerant pump serves as a first target parameter, the opening degree of the throttling control serves as a second target parameter, and the working frequency of the refrigerant pump is reduced firstly and then the opening degree of the throttling control is reduced; when the actual value of the superheat degree is larger than the maximum value of the preset superheat degree interval, the opening degree of the throttling control serves as a first target parameter, the working frequency of the refrigerant pump serves as a second target parameter, the opening degree of the throttling control is increased firstly, then the working frequency of the refrigerant pump is increased, and the actual value of the superheat degree belongs to the preset superheat degree interval in the mode; the overall power consumption of the fluorine pump air conditioner in a fluorine pump refrigeration mode and a mixed mode is reduced to a certain extent, and the overall energy efficiency of the fluorine pump air conditioner is improved.

Description

Technical Field

[0001] The embodiments of the present application relate to the field of refrigeration technology, and in particular to a method and device for controlling refrigerant flow, a computer storage medium, and a refrigeration device. Background Art

[0002] Data centers are equipped with a variety of data processing equipment. With the extensive application of 4G and the gradual popularization of 5G, the heat generated by various data processing equipment is increasing, and data centers have higher and higher requirements for the cooling capacity and energy saving of refrigeration equipment.

[0003] During the transitional season and cold winter, refrigeration equipment uses outdoor natural cold sources to cool the data center, which can significantly reduce the operating costs of refrigeration equipment. For example, in the common fluorine pump air conditioner, in the fluorine pump cooling mode, in order to match the refrigerant flow required by the fluorine pump air conditioner, an electronic expansion valve is usually used to control the refrigerant flow and the refrigerant is transported to the evaporator under the drive of the fluorine pump, so that the refrigerant in the evaporator exchanges heat with the air in the data center.

[0004] This method of controlling the flow of refrigerant by an electronic expansion valve and driving it with a fluorine pump results in energy loss. Summary of the invention

[0005] The embodiments of the present application provide a refrigerant flow control method, device, computer storage medium and refrigeration equipment, which can reduce the energy consumption of a fluorine pump air conditioner in a fluorine pump refrigeration mode.

[0006] In a first aspect, an embodiment of the present application provides a method for controlling a refrigerant flow rate, the method comprising:

[0007] When the actual superheat value does not belong to the preset superheat range, determining a first target parameter according to a relationship between the actual superheat value and the preset superheat range, and determining an adjustment amount of the first target parameter;

[0008] Determining an adjustment amount of a second target parameter according to a first target parameter, wherein the first target parameter and the second target parameter are respectively one of an operating frequency of a refrigerant pump and an opening degree of a throttling control;

[0009] The flow rate of the refrigerant is controlled based on the adjustment amount of the first target parameter and the adjustment amount of the second target parameter.

[0010] In some embodiments, the actual superheat value is less than the minimum value of the preset superheat range, the first target parameter is the operating frequency of the refrigerant pump, and the second target parameter is the opening of the throttling control.

[0011] In some embodiments, when the actual superheat value is less than the minimum value of the preset superheat interval, determining the adjustment amount of the first target parameter includes:

[0012] When the current operating frequency of the refrigerant pump is not the minimum operating frequency, a difference between the current operating frequency of the refrigerant pump and the minimum operating frequency is determined as a downward adjustment amount of the first target parameter.

[0013] In some embodiments, when the actual superheat value is less than the minimum value of the preset superheat range, determining the adjustment amount of the second target parameter according to the first target parameter includes:

[0014] When the current operating frequency of the refrigerant pump is the minimum operating frequency, the downward adjustment amount of the second target parameter is determined according to the actual value of the superheat degree and the preset superheat range.

[0015] In some embodiments, the actual superheat value is greater than the maximum value of the preset superheat range, the first target parameter is the opening of the throttling control, and the second target parameter is the operating frequency of the refrigerant pump.

[0016] In some embodiments, when the actual superheat value is greater than the maximum value of the preset superheat range, determining the adjustment amount of the first target parameter includes:

[0017] When the current opening of the throttle control is not the maximum opening, the difference between the maximum opening and the current opening is determined as the increase adjustment amount of the first target parameter.

[0018] In some embodiments, when the actual superheat value is greater than the maximum value of the preset superheat range, determining the adjustment amount of the second target parameter according to the first target parameter includes:

[0019] When the current opening of the throttling control is the maximum opening, the increase adjustment amount of the second target parameter is determined according to the actual value of the superheat degree and the preset superheat range.

[0020] In a second aspect, an embodiment of the present application provides a refrigerant flow control device, the device comprising:

[0021] a first determination module, configured to determine a first target parameter according to a relationship between the actual superheat value and the preset superheat range, and determine an adjustment amount of the first target parameter when the actual superheat value does not belong to the preset superheat range;

[0022] A second determination module is used to determine the adjustment amount of the second target parameter according to the first target parameter, wherein the first target parameter and the second target parameter are respectively one of the operating frequency of the refrigerant pump and the opening degree of the throttling control;

[0023] A control module is used to control the flow rate of the refrigerant based on the adjustment amount of the first parameter and the adjustment amount of the second target parameter.

[0024] In a third aspect, an embodiment of the present application provides a computer program product comprising instructions, which, when executed on a computer or a processor, enables the computer or the processor to execute the method steps in the first aspect and the embodiments of the first aspect.

[0025] In a fourth aspect, an embodiment of the present application provides a computer storage medium, which stores a plurality of instructions, and the instructions are suitable for being loaded by a processor and executing the method steps in the first aspect and the embodiments of the first aspect.

[0026] In a fifth aspect, an embodiment of the present application provides a refrigeration device, the refrigeration device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, and when the processor executes the program, the method steps in the first aspect and the embodiment of the first aspect are implemented.

[0027] The beneficial effects brought by the technical solution provided by the embodiment of the present application include at least:

[0028] The embodiments of the present application provide a method, device, computer storage medium and refrigeration equipment for controlling the refrigerant flow rate. Since the power consumed by the throttling control of the fluorine pump air conditioner in the fluorine pump refrigeration mode is much smaller than the power consumed by the refrigerant pump, when the actual superheat value is smaller than the minimum value of the preset superheat range, the operating frequency of the refrigerant pump is used as the first target parameter, and the opening of the throttling control is used as the second target parameter. The operating frequency of the refrigerant pump is first reduced and then the opening of the throttling control is reduced; when the actual superheat value is larger than the maximum value of the preset superheat range, the opening of the throttling control is used as the first target parameter, and the operating frequency of the refrigerant pump is used as the second target parameter. The opening of the throttling control is first increased and then the operating frequency of the refrigerant pump is increased; in the above manner, the actual superheat value is restored to the preset superheat range, thereby reducing the overall power consumption of the fluorine pump air conditioner in the fluorine pump refrigeration mode to a certain extent, and improving the overall energy efficiency of the fluorine pump air conditioner. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this specification. For those skilled in the art, other drawings can be obtained based on these drawings without paying any creative work.

[0030] Figure 1 This is a schematic diagram of the system architecture of a fluorine pump air conditioner;

[0031] Figure 2 A flow chart of a method for controlling a refrigerant flow rate provided in an embodiment of the present application;

[0032] Figure 3 Another schematic flow chart of a method for controlling a refrigerant flow rate provided in an embodiment of the present application;

[0033] Figure 4 Another flow chart of a refrigerant flow control method provided in an embodiment of the present application

[0034] Figure 5 A schematic diagram of the structure of a refrigerant flow control device provided in an embodiment of the present application;

[0035] Figure 6 A schematic diagram of the structure of a refrigeration device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0036] In order to make the features and advantages of the embodiments of the present application more obvious and easy to understand, 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 this specification, not all of the embodiments. Based on the embodiments in this specification, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the embodiments of the present application.

[0037] When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the embodiments of the present application. Instead, they are only examples of devices and methods consistent with some aspects of the embodiments of the present application as detailed in the attached claims.

[0038] Data centers are equipped with a variety of data processing equipment, which are arranged in rows in the data center, and air conditioning equipment used for cooling the data center is installed between rows of two adjacent data processing equipment. With the widespread application of 4G and the gradual popularization of 5G, the heat generated by various data processing equipment is increasing, and data centers have higher and higher requirements for the cooling capacity and energy saving of air conditioning equipment.

[0039] In order to meet the cooling needs of data centers and the energy-saving requirements of cooling equipment, fluorine pump air conditioners are usually used. Figure 1 , Figure 1 This is a schematic diagram of the system architecture of the fluorine pump air conditioner. Figure 1 As shown, the fluorine pump air conditioner may include at least a refrigerant pump 110, a refrigerant pump bypass check valve 120, a throttle control 130, an evaporator 140, a compressor 150, a compressor bypass check valve 160 and a condenser 170. The fluorine pump air conditioner includes at least three working modes according to the change of outdoor temperature, specifically including:

[0040] Compressor cooling mode:

[0041] When the fluorine pump air conditioner is in the compressor cooling mode, the evaporator 140, the compressor 150, the condenser 170, the refrigerant pump bypass check valve 120 and the throttle control 130 and the evaporator 140 are connected in sequence to form a refrigeration system of the fluorine pump air conditioner in the compressor cooling mode.

[0042] When the outdoor ambient temperature is high, for example, when the outdoor ambient temperature is greater than 20 degrees, the fluorine pump air conditioner turns on the compressor cooling mode, and the refrigerant pump 110 stops running.

[0043] The compressor cooling mode is specifically as follows: the refrigerant in the evaporator 140 exchanges heat with the air in the data center, so that the refrigerant evaporates and absorbs heat to reduce the air temperature in the data center. The refrigerant in the evaporator 140 evaporates into a gaseous state, and the gaseous refrigerant is converted into a liquid refrigerant through the compressor 150, the condenser 170, the refrigerant pump bypass check valve 120 and the throttle control 130, and the liquid refrigerant is transported to the evaporator 140 to achieve circulating cooling of the air in the data center.

[0044] Fluorine pump refrigeration mode:

[0045] When the fluorine pump air conditioner is in the fluorine pump refrigeration mode, the evaporator 140, the compressor bypass check valve 160, the condenser 170, the refrigerant pump 110, the throttling control 130 and the evaporator 140 are connected in sequence to form a refrigeration system of the fluorine pump air conditioner in the fluorine pump refrigeration mode.

[0046] When the outdoor ambient temperature is low, for example, the outdoor ambient temperature is less than 10 degrees (10 degrees can be understood as the set temperature value when the fluorine pump air conditioner turns on the fluorine pump refrigeration mode), the fluorine pump air conditioner turns on the fluorine pump refrigeration mode, and the compressor 150 stops running.

[0047] The fluorine pump cooling mode is specifically as follows: the refrigerant in the evaporator 140 exchanges heat with the air in the data center, so that the refrigerant evaporates and absorbs heat to reduce the air temperature in the data center. The refrigerant in the evaporator 140 evaporates into a gas with a higher temperature, and the gaseous refrigerant is transported to the condenser 170 through the compressor bypass check valve 160. The gaseous refrigerant in the condenser 170 exchanges heat with the air with a lower outdoor temperature, so that the gaseous high-temperature refrigerant is condensed into a low-temperature liquid refrigerant. In order to match the refrigerant flow required by the fluorine pump air conditioner, the low-temperature liquid refrigerant in the condenser 170 needs to be powered by the refrigerant pump 110 and transmitted to the evaporator 140. At the same time, a throttling control 130 is set between the refrigerant pump 110 and the evaporator 140 to control the flow of the refrigerant. The flow of the refrigerant is controlled by controlling the opening of the throttling control 130, thereby controlling the superheat at the outlet position of the evaporator 140.

[0048] In order to more accurately measure the superheat at the outlet of the evaporator 140, a temperature and pressure measuring device is usually installed at the outlet of the evaporator 140. The temperature and pressure measuring device is used to measure the difference between the superheated vapor temperature of the refrigerant and the saturation temperature of the liquid refrigerant at the outlet of the evaporator 140 at the same evaporation pressure.

[0049] It should be noted that when the superheat is a set value (set according to the actual situation of the fluorine pump air conditioner), all the liquid refrigerant in the evaporator 140 at the outlet of the condenser 170 evaporates into gaseous refrigerant. When the superheat is greater than the set value, the difference between the superheated steam temperature at the outlet of the condenser 170 and the saturation temperature of the liquid refrigerant is greater than the set value at the same evaporation pressure. In this case, the evaporator 140 is filled with gaseous refrigerant near the outlet, indicating that there is a lack of liquid refrigerant in the evaporator 140, resulting in a reduction in the refrigeration power of the fluorine pump air conditioner. It should be noted that if the superheat at the outlet of the evaporator 140 is small, then there is liquid refrigerant near the evaporator 140. In this way, when the fluorine pump air conditioner is converted from the refrigerant pump 110 mode to the compressor refrigeration mode, the liquid refrigerant near the outlet of the evaporator 140 will enter the compressor 150 and damage the compressor 150.

[0050] In order to avoid damage to the compressor 150, it is usually necessary to control the superheat at the outlet of the evaporator 140 within a certain range so that the outlet near the evaporator 140 is filled with gaseous refrigerant formed by the evaporation of liquid refrigerant, while preventing the liquid refrigerant from entering the compressor 150.

[0051] It should be noted that the evaporation rate of the refrigerant in the evaporator 140 is affected by the air temperature in the data center, and the superheat of the refrigerant in the evaporator 140 needs to be detected at any time, and the flow rate of the refrigerant is controlled by adjusting the opening of the throttle control 130 in real time to meet the flow rate of the refrigerant required by the fluorine pump air conditioner, thereby controlling the superheat at the outlet of the evaporator 140. In the fluorine pump cooling mode, since the power consumed by the refrigerant pump 110 and the throttle control 130 is much less than the operating power of the compressor 150, the fluorine pump air conditioner can achieve energy saving in the fluorine pump cooling mode compared with the compressor cooling mode.

[0052] In the fluorine pump refrigeration mode, the refrigerant pump 110 usually runs at the maximum frequency to reach the maximum speed, so as to provide the greatest possible power for the delivery of liquid refrigerant. In order to match the refrigerant flow required by the fluorine pump air conditioner, the opening of the throttle control 130 is adjusted in real time according to the change of superheat to adjust the flow of liquid refrigerant. In other words, in the process of delivering the liquid refrigerant to the evaporator 140, the frequency of the refrigerant pump 110 remains unchanged, and the opening of the throttle control 130 is adjusted. Since the power consumed by the refrigerant pump 110 in the fluorine pump mode accounts for a large proportion, there is a loss of energy consumption.

[0053] Blend Mode:

[0054] When the outdoor ambient temperature is slightly lower, for example, the outdoor ambient temperature is greater than 10 degrees and less than 20 degrees, the fluorine pump air conditioner turns on the hybrid mode, that is, the compressor 150 and the refrigerant pump 110 work at the same time. In the hybrid mode, since the compressor 150 operates at a variable frequency and has a slower speed, compared with the full frequency operation of the compressor 150 in the compressor cooling mode, the fluorine pump air conditioner in the hybrid mode can achieve energy saving effect compared with the compressor cooling mode.

[0055] It should be noted that in the hybrid mode of the fluorine pump air conditioner, the compressor 150 and the refrigerant pump 110 operate simultaneously. If there is liquid refrigerant at the outlet of the evaporator 140, the liquid refrigerant will enter the compressor 150 and damage the compressor 150. Therefore, it is necessary to detect the superheat of the refrigerant in the evaporator 140 and adjust the superheat to a suitable temperature range to prevent the liquid refrigerant at the outlet of the evaporator 140 from entering the compressor 150 and causing damage to the compressor 150.

[0056] In order to solve the problem of energy loss caused by a large proportion of the power of the refrigerant pump 110 in the fluorine pump refrigeration mode and the mixed mode of the fluorine pump air conditioner, an embodiment of the present application provides a method for controlling the refrigerant flow rate, the method comprising: when the actual superheat value does not belong to the preset superheat range, determining a first target parameter according to the relationship between the actual superheat value and the preset superheat range, and determining an adjustment amount of the first target parameter; determining an adjustment amount of the second target parameter according to the first target parameter, the first target parameter and the second target parameter being respectively one of the operating frequency of the refrigerant pump and the opening of the throttling control; controlling the refrigerant flow rate based on the adjustment amount of the first target parameter and the adjustment amount of the second target parameter, in this way, the problem of energy loss caused by a large proportion of the power of the refrigerant pump 110 in the fluorine pump refrigeration mode and the mixed mode of the above-mentioned fluorine pump air conditioner can be solved.

[0057] Specifically, see Figure 1 In the embodiment of the present application, the refrigerant pump 110 may include at least a centrifugal pump and a gear pump, etc. Taking the refrigerant pump 110 as a centrifugal pump as an example, the rotation speed of the centrifugal pump can be controlled by controlling the frequency of the centrifugal pump, thereby controlling the flow rate of the refrigerant passing through the centrifugal pump. Specifically, the greater the frequency of the centrifugal pump, the greater the flow rate of the refrigerant passing through the centrifugal pump. The refrigerant pump 110 is connected to the temperature and pressure measuring device through the whole machine controller. The whole machine controller receives the electrical signal generated by the temperature and pressure measuring device due to the temperature and pressure change, and transmits the electrical signal to the refrigerant pump 110. The refrigerant pump 110 controls the change of frequency according to the change of voltage or current, thereby controlling the flow rate of the refrigerant passing through the refrigerant pump 110.

[0058] Commonly used refrigerants include Freon refrigerants, specifically R12 refrigerant, R22 refrigerant, R502 refrigerant, etc., which are not limited in this application.

[0059] The throttling control 130 may at least include an electronic expansion valve, a capillary tube, and a solenoid valve, etc. Taking the throttling control 130 as an electronic expansion valve as an example, the electronic expansion valve is connected to the temperature and pressure measuring device through the whole machine controller. The whole machine controller receives the electrical signal generated by the temperature and pressure measuring device due to the temperature and pressure change, and transmits the electrical signal to the electronic expansion valve. The electronic expansion valve controls the size of the opening according to the change of voltage or current to control the flow of the refrigerant through the electronic expansion valve. Specifically, the temperature and pressure measuring device measures the evaporation pressure of the refrigerant at the set position of the outlet position of the evaporator 140, and converts the evaporation pressure into the saturation temperature of the refrigerant, and then uses the temperature and pressure measuring device to measure the actual temperature of the set position; then, the difference between the actual temperature and the saturation temperature is the superheat of the fluorine pump air conditioner.

[0060] It should be noted that, since the adjustment structure of the electronic expansion valve is a stepper motor, the minimum angle range of the stepper motor's rotation is called a step, and the adjustment of the electronic expansion valve's opening is usually calculated in "steps". For example, the opening adjustment range of the electronic expansion valve is 120 steps to 480 steps. When the opening adjustment step number of the electronic expansion valve is 480 steps, the opening of the electronic expansion valve is the largest, that is, the opening of the electronic expansion valve reaches the maximum value. In some embodiments, different types of electronic expansion valves have different step ranges for opening adjustment, and the type of electronic expansion valve can be set according to actual needs, and this application does not limit it.

[0061] The fluorine pump air conditioner is in the compressor cooling mode, and the evaporator 140, the compressor 150, the condenser 170, the refrigerant pump bypass check valve 120, the throttle control 130 and the evaporator 140 are connected in sequence.

[0062] The fluorine pump air conditioner is in the fluorine pump cooling mode, and the evaporator 140, the compressor bypass check valve 160, the condenser 170, the refrigerant pump 110, the throttling control unit 130 and the evaporator 140 are connected in sequence.

[0063] In the fluorine pump refrigeration mode, the low-temperature liquid refrigerant in the condenser 170 is powered by the refrigerant pump 110 and transmitted to the evaporator 140; at the same time, the refrigerant pump 110 and the throttling control unit 130 are used to control the flow of the refrigerant, thereby controlling the superheat of the evaporator 140.

[0064] In the present application, firstly, when the actual superheat value does not belong to the preset superheat range, the refrigeration equipment determines a first target parameter according to the relationship between the actual superheat value and the preset superheat range, and determines the adjustment amount of the first target parameter; secondly, the refrigeration equipment determines the adjustment amount of the second target parameter according to the first target parameter, and the first target parameter and the second target parameter are respectively one of the operating frequency of the refrigerant pump 110 and the opening degree of the throttling control 130; finally, the refrigeration equipment controls the flow rate of the refrigerant based on the adjustment amount of the first target parameter and the adjustment amount of the second target parameter.

[0065] It should be understood that Figure 1 The numbers of the refrigerant pump 110, the refrigerant pump bypass check valve 120, the throttling control 130, the evaporator 140, the compressor 150, the compressor bypass check valve 160 and the condenser 170 are schematic and can be set according to actual needs, and this application does not limit them.

[0066] See also Figure 2 , Figure 2 A flow chart of a method for controlling refrigerant flow provided in an embodiment of the present application. Figure 2 As shown, the method for controlling the refrigerant flow rate at least includes:

[0067] S202: When the actual superheat value does not belong to the preset superheat range, the whole machine controller determines a first target parameter and an adjustment amount of the first target parameter according to a relationship between the actual superheat value and the preset superheat range.

[0068] To facilitate the description of the embodiments of the present application, the following description will be made using an example in which the refrigeration equipment is a fluorine pump air conditioner and the throttling control unit is an electronic expansion valve.

[0069] Fluorine pump air conditioner can control the flow of refrigerant by adjusting the frequency of refrigerant pump and the opening of electronic expansion valve at the same time, so as to control the superheat of the outlet position of evaporator. It should be noted that if the superheat of the outlet position of evaporator is zero, that is, the difference between the actual temperature of refrigerant and saturation temperature of the outlet position of evaporator is zero, the refrigerant will completely evaporate when it reaches the outlet position of evaporator, and return gas may be generated at this time, and the return gas may carry liquid refrigerant. At the moment of compressor working, the liquid refrigerant carried by the return gas will enter the compressor and damage the compressor. In order to avoid this situation, the setting position of the outlet position of evaporator needs to be set to a certain superheat to ensure that gaseous refrigerant can enter the compressor. However, excessive superheat will cause the exhaust temperature of compressor to rise, resulting in deterioration of compressor operation condition and reducing the service life of compressor. Therefore, the superheat of the setting position of outlet position of evaporator needs to be controlled within a certain range to ensure the demand of liquid refrigerant in evaporator when the liquid refrigerant in evaporator exchanges heat with the air in data center, and also avoid damage to compressor.

[0070] Optionally, the fluorine pump air conditioner measures the current actual value of superheat using a temperature and pressure measuring device, and determines whether the actual value of superheat belongs to a preset superheat interval. It should be noted that in the embodiment of the present application, the preset superheat interval is usually controlled between 3.5 degrees and 6.5 degrees, which can be set according to actual conditions, and this application does not limit it.

[0071] It should be noted that in the present application, in the fluorine pump refrigeration mode and the mixed mode, the power consumption of the refrigerant pump may be 800W to 1500W under full-frequency conditions, while the power consumption of the electronic expansion valve may be 1W when it is opened to the maximum. That is to say, in the fluorine pump refrigeration mode and the mixed mode, the power consumption of the refrigerant pump is much greater than the power consumption of the electronic expansion valve.

[0072] When the actual value of superheat is less than the minimum value of the preset superheat interval, it means that the amount of refrigerant in the evaporator is sufficient, and the refrigerant delivery in the evaporator needs to be reduced. Since the power consumption of the refrigerant pump is much greater than the power consumption of the electronic expansion valve, in order to reduce the power consumed by the refrigerant pump in the fluorine pump refrigeration mode and the mixed mode, the operating frequency of the refrigerant pump can be used as the first target parameter, and the refrigerant delivery in the evaporator can be reduced by reducing the operating frequency of the refrigerant pump. Furthermore, in order to facilitate the adjustment of the operating frequency of the refrigerant pump, the whole machine controller needs to use the PID (proportional proportion, integral integral, derivative differential) algorithm to determine the adjustment amount required for the refrigerant pump to adjust from the current operating frequency to the required operating frequency based on the difference between the actual value of superheat and the minimum value of the preset superheat interval. According to the above adjustment amount, the whole machine controller can directly adjust the operating frequency of the refrigerant pump to the required operating frequency, which can improve the speed and accuracy of superheat adjustment.

[0073] It should be noted that the whole machine controller can also use other algorithms to calculate the adjustment amount of the operating frequency of the refrigerant pump and the adjustment amount of the opening of the electronic expansion valve, and this application does not limit it.

[0074] When the actual value of superheat is greater than the maximum value of the preset superheat interval, it means that the amount of refrigerant in the evaporator is insufficient, and the refrigerant delivery in the evaporator needs to be increased. Since the power consumption of the electronic expansion valve is much less than the power consumption of the refrigerant pump, in order to reduce the power consumption of the fluorine pump air conditioner in the fluorine pump refrigeration mode and the mixed mode, the opening of the electronic expansion valve can be used as the first target parameter, and the refrigerant delivery in the evaporator can be increased by increasing the opening of the electronic expansion valve. Furthermore, in order to facilitate the adjustment of the opening of the electronic expansion valve, it is necessary to determine the adjustment amount required for the electronic expansion valve to adjust from the current opening to the required opening according to the difference between the actual value of the superheat and the maximum value of the preset superheat interval. According to the above adjustment amount, the whole machine controller directly adjusts the opening of the electronic expansion valve to the required opening, which can improve the speed and accuracy of superheat adjustment, and can also make timely adjustments according to the changes in superheat to meet the refrigeration needs of the fluorine pump air conditioner.

[0075] S204: The whole machine controller determines an adjustment amount of the second target parameter according to the first target parameter.

[0076] When the actual superheat value is less than the minimum value of the preset superheat interval, when the current operating frequency of the refrigerant pump is reduced to the minimum value, the opening of the electronic expansion valve can be used as the second target parameter. And according to the difference between the current actual superheat value and the minimum value of the preset superheat interval, the PID algorithm is used to determine the adjustment amount required for adjusting the electronic expansion valve from the current opening to the required opening.

[0077] When the actual value of superheat is greater than the maximum value of the preset superheat interval, when the current opening of the electronic expansion valve increases to the maximum value, the operating frequency of the refrigerant pump can be used as the second target parameter. And according to the difference between the current actual value of superheat and the minimum value of the preset superheat interval, the PID algorithm is used to determine the adjustment amount required for the refrigerant pump to adjust from the current operating frequency to the required operating frequency.

[0078] S206. The whole machine controller controls the flow rate of the refrigerant based on the adjustment amount of the first target parameter and the adjustment amount of the second target parameter.

[0079] When the actual superheat value does not belong to (is less than or greater than) the preset superheat range, the operating frequency of the refrigerant pump and the opening of the electronic expansion valve are adjusted according to the determined adjustment amount of the operating frequency of the refrigerant pump and the adjustment amount of the opening of the electronic expansion valve to control the flow rate of the refrigerant.

[0080] In the embodiment of the present application, since the power consumed by the throttling control of the fluorine pump air conditioner in the fluorine pump refrigeration mode is much smaller than the power consumed by the refrigerant pump, when the actual superheat value is less than the minimum value of the preset superheat range, the operating frequency of the refrigerant pump is used as the first target parameter, and the opening of the throttling control is used as the second target parameter. The operating frequency of the refrigerant pump is first reduced and then the opening of the throttling control is reduced; when the actual superheat value is greater than the maximum value of the preset superheat range, the opening of the throttling control is used as the first target parameter, and the operating frequency of the refrigerant pump is used as the second target parameter. The opening of the throttling control is first increased and then the operating frequency of the refrigerant pump is increased. In the above manner, the actual superheat value is restored to the preset superheat range. In this way, the frequency of the refrigerant pump is reduced and the opening of the throttling control is increased first during the adjustment process. The overall power consumption of the fluorine pump air conditioner in the fluorine pump refrigeration mode is reduced to a certain extent, thereby improving the overall energy efficiency of the fluorine pump air conditioner.

[0081] See also Figure 3 to Figure 4 , Figure 3 A flow chart of a method for controlling a refrigerant flow rate provided in an embodiment of the present application; Figure 4 A flow chart of a method for controlling refrigerant flow provided in an embodiment of the present application. Figure 3 to Figure 4 As shown, the method for controlling the refrigerant flow rate at least includes:

[0082] S302: When the actual superheat value does not belong to the preset superheat range, the whole machine controller determines a first target parameter according to the relationship between the actual superheat value and the preset superheat range.

[0083] For the detailed description of step S302, please refer to step S202, which will not be described here in detail.

[0084] In some embodiments, when the actual superheat value is less than the minimum value of the preset superheat interval, the first target parameter is the operating frequency of the refrigerant pump, and the second target parameter is the opening of the throttling control. Specifically, the refrigerant flow control method includes:

[0085] S304: When the current operating frequency of the refrigerant pump is not the minimum operating frequency, the whole machine controller determines the difference between the current operating frequency of the refrigerant pump and the minimum operating frequency as the downward adjustment amount of the first target parameter.

[0086] In order to ensure the delivery power of the liquid refrigerant, the operating frequency of the refrigerant pump needs to be greater than the minimum operating frequency so that the liquid refrigerant passing through the refrigerant pump can be delivered to the evaporator. In this application, the frequency of the refrigerant pump is usually set between 30Hz and 60Hz, that is, the minimum operating frequency of the refrigerant pump is 30Hz and the maximum operating frequency is 60Hz.

[0087] It should be noted that the minimum operating frequency and maximum operating frequency of different refrigerant pumps are different and can be set according to actual needs, and this application does not limit it. It should be noted that the speed of the refrigerant pump at the minimum frequency of the refrigerant pump needs to meet the demand for the delivery power of the liquid refrigerant.

[0088] Optionally, when the current operating frequency of the refrigerant pump is not the minimum operating frequency (for example, 30 Hz), the operating frequency of the refrigerant pump still has a margin for reduction, then the difference between the current operating frequency of the refrigerant pump and the minimum operating frequency can be determined as the downward adjustment amount of the first target parameter, and the whole machine controller adjusts the operating frequency of the refrigerant pump according to the downward adjustment amount of the first target parameter to reduce the flow rate of the refrigerant. Since the power consumption of the refrigerant pump in the fluorine pump refrigeration mode and the mixed mode accounts for a large proportion, then by reducing the operating frequency of the refrigerant pump, the overall power consumption of the fluorine pump air conditioner in the fluorine pump refrigeration mode and the mixed mode can be reduced to a certain extent, thereby improving the overall energy efficiency of the fluorine pump air conditioner.

[0089] Furthermore, when the operating frequency of the refrigerant pump drops to the minimum value (for example, 30 Hz) and the superheat is not yet restored to the preset superheat range, the opening of the electronic expansion valve can be reduced by the whole machine controller to further reduce the refrigerant flow until the superheat is restored to the preset superheat range.

[0090] It should be noted that the whole machine controller can use the PID algorithm to determine the descent adjustment amount of the refrigerant pump and the overall descent adjustment amount when the refrigerant pump and the electronic expansion valve work together according to the detected change in superheat, which can improve the speed and accuracy of superheat adjustment. At the same time, it can also make timely adjustments according to changes in superheat to meet the refrigeration needs of fluorine pump air conditioners.

[0091] When the actual superheat value is less than the minimum value of the preset superheat range, by first reducing the operating frequency of the refrigerant pump and then reducing the opening of the electronic expansion valve, since the power consumption of the refrigerant pump in the fluorine pump refrigeration mode and the mixed mode is much greater than the power consumption of the electronic expansion valve, the overall power consumption of the fluorine pump air conditioner in the fluorine pump refrigeration mode and the mixed mode can be reduced to a certain extent.

[0092] S306: When the current operating frequency of the refrigerant pump is the minimum operating frequency, the whole machine controller determines a downward adjustment amount of the second target parameter according to the actual value of the superheat degree and the preset superheat range.

[0093] Optionally, when the current operating frequency of the refrigerant pump is the minimum operating frequency (for example, 30 Hz), the frequency of the refrigerant pump cannot be reduced any further, and at this time, the flow rate of the refrigerant needs to be reduced by reducing the opening of the electronic expansion valve. Then, the decrease adjustment amount of the second target parameter can be determined by the difference between the actual value of the superheat and the minimum value of the preset superheat interval, and the opening of the electronic expansion valve can be adjusted according to the decrease adjustment amount of the second target parameter to reduce the flow rate of the refrigerant.

[0094] In some embodiments, when the actual superheat value is greater than the maximum value of the preset superheat interval, the first target parameter is the opening of the throttle control, and the second target parameter is the operating frequency of the refrigerant pump. Specifically, the refrigerant flow control method includes:

[0095] S308. When the current opening of the throttle control is not the maximum opening, the whole machine controller determines the difference between the maximum opening and the current opening as the increase adjustment amount of the first target parameter.

[0096] Optionally, when the current opening of the electronic expansion valve is not the maximum opening, the opening of the electronic expansion valve still has an increase margin, then the difference between the maximum opening and the current opening can be determined as the increase adjustment amount of the first target parameter. And the opening of the electronic expansion valve is adjusted according to the increase adjustment amount of the first target parameter to increase the flow rate of the refrigerant. Since the power consumption of the electronic expansion valve in the fluorine pump refrigeration mode and the mixed mode accounts for a small proportion, then increasing the opening of the electronic expansion valve through the whole machine controller can reduce the overall power consumption of the fluorine pump air conditioner in the fluorine pump refrigeration mode and the mixed mode to a certain extent, and improve the overall energy efficiency of the fluorine pump air conditioner.

[0097] Furthermore, when the opening of the electronic expansion valve increases to the maximum value and the superheat is not yet restored to the preset superheat range, the refrigerant flow rate can be further increased by increasing the operating frequency of the refrigerant pump until the superheat is restored to the preset superheat range.

[0098] When the actual superheat value is greater than the maximum value of the preset superheat range, by first increasing the opening of the electronic expansion valve and then increasing the operating frequency of the refrigerant pump, since the power consumption of the electronic expansion valve of the fluorine pump air conditioner in the fluorine pump refrigeration mode and the mixed mode is much smaller than the power consumption of the refrigerant pump, the overall power consumption of the fluorine pump air conditioner in the fluorine pump refrigeration mode and the mixed mode can be reduced to a certain extent.

[0099] It should be noted that the whole machine controller can use the PID algorithm to determine the increase in the opening adjustment amount of the electronic expansion valve and the overall increase in the opening adjustment amount when the electronic expansion valve and the refrigerant pump work together according to the detected change in superheat, which can improve the speed and accuracy of superheat regulation. At the same time, it can also make timely adjustments according to changes in superheat to meet the refrigeration needs of the fluorine pump air conditioner.

[0100] S310. When the current opening of the throttling control is the maximum opening, the whole machine controller determines the increase adjustment amount of the second target parameter according to the actual value of the superheat and the preset superheat range.

[0101] Optionally, when the opening of the electronic expansion valve is at the maximum value, the opening of the electronic expansion valve cannot be increased any further, and at this time, the operating frequency of the refrigerant pump needs to be increased. Then, the increase adjustment amount of the second target parameter can be determined by the difference between the actual value of the superheat and the minimum value of the preset superheat interval, and the operating frequency of the refrigerant pump can be adjusted according to the increase adjustment amount of the second target parameter to increase the flow rate of the refrigerant.

[0102] S312: The whole machine controller controls the flow rate of the refrigerant based on the adjustment amount of the first target parameter and the adjustment amount of the second target parameter.

[0103] For the detailed description of step S312, please refer to step S206, which will not be described here.

[0104] It should be noted that after the superheat is adjusted to the preset superheat range through the above method, the whole machine controller still needs to monitor the changes in superheat at certain time intervals, and make timely adjustments according to the above method based on the relationship between the actual superheat value and the preset superheat range.

[0105] In some embodiments, the vehicle controller may also monitor the changes in superheat in real time, and make timely adjustments according to the above method based on the relationship between the actual superheat value and the preset superheat range.

[0106] In the present application, since the power consumed by the throttling control of the fluorine pump air conditioner in the fluorine pump refrigeration mode is much smaller than the power consumed by the refrigerant pump, when the actual superheat value is less than the minimum value of the preset superheat range, the operating frequency of the refrigerant pump is used as the first target parameter, and the opening of the throttling control is used as the second target parameter. The operating frequency of the refrigerant pump is first reduced and then the opening of the throttling control is reduced; when the actual superheat value is greater than the maximum value of the preset superheat range, the opening of the throttling control is used as the first target parameter, and the operating frequency of the refrigerant pump is used as the second target parameter. The opening of the throttling control is first increased and then the operating frequency of the refrigerant pump is increased. In the above manner, the actual superheat value is restored to the preset superheat range. In this way, the frequency of the refrigerant pump is reduced and the opening of the throttling control is increased first during the adjustment process. The overall power consumption of the fluorine pump air conditioner in the fluorine pump refrigeration mode is reduced to a certain extent, thereby improving the overall energy efficiency of the fluorine pump air conditioner.

[0107] See also Figure 4 , Figure 4 A flow chart of a method for controlling refrigerant flow provided in an embodiment of the present application. Figure 4 As described above, when the fluorine pump air conditioner is in the fluorine pump mode, the vehicle controller determines the relationship between the current superheat and the preset superheat range according to the received superheat value.

[0108] When the current superheat is less than the minimum value of the preset superheat range, the superheat needs to be adjusted to the superheat range according to the superheat requirement of the fluorine pump air conditioner in the fluorine pump mode, so the superheat needs to be increased. Further, it is determined whether the operating frequency of the refrigerant pump is the minimum value. When the current operating frequency of the refrigerant pump is not the minimum operating frequency, the operating frequency of the refrigerant pump still has a reduction margin, then the current operating frequency of the refrigerant pump can be adjusted to the minimum operating frequency of the refrigerant pump to reduce the flow rate of the refrigerant. When the operating frequency of the refrigerant pump drops to the minimum value and the superheat is not restored to the preset superheat range, the opening of the electronic expansion valve can be reduced by controlling the whole machine controller to further reduce the flow rate of the refrigerant until the superheat is restored to the preset superheat range.

[0109] When the actual superheat value is less than the minimum value of the preset superheat range, by first reducing the operating frequency of the refrigerant pump and then reducing the opening of the electronic expansion valve, since the power consumption of the refrigerant pump in the fluorine pump cooling mode and the mixed mode is much greater than the power consumption of the electronic expansion valve, the overall power consumption of the fluorine pump air conditioner in the fluorine pump cooling mode and the mixed mode can be reduced to a certain extent.

[0110] When the actual superheat value is greater than the maximum value of the preset superheat range, the superheat needs to be adjusted to the superheat range according to the superheat requirement of the fluorine pump air conditioner in the fluorine pump mode, so the superheat needs to be reduced. Further, it is determined whether the opening of the electronic expansion valve is opened to the maximum. When the current opening of the electronic expansion valve is not the maximum opening, the opening of the electronic expansion valve still has an increase margin, so the opening of the electronic expansion valve can be increased to increase the flow rate of the refrigerant. Since the power consumption of the electronic expansion valve in the fluorine pump refrigeration mode and the mixed mode accounts for a small proportion, increasing the opening of the electronic expansion valve through the whole machine controller can reduce the overall power consumption of the fluorine pump air conditioner in the fluorine pump refrigeration mode and the mixed mode to a certain extent, and improve the overall energy efficiency of the fluorine pump air conditioner.

[0111] When the opening of the electronic expansion valve increases to the maximum value and the superheat is still not restored to the preset superheat range, the refrigerant flow rate can be further increased by increasing the operating frequency of the refrigerant pump until the superheat is restored to the preset superheat range.

[0112] When the actual superheat value is greater than the maximum value of the preset superheat range, by first increasing the opening of the electronic expansion valve and then increasing the operating frequency of the refrigerant pump, since the power consumption of the electronic expansion valve of the fluorine pump air conditioner in the fluorine pump refrigeration mode and the mixed mode is much smaller than the power consumption of the refrigerant pump, the overall power consumption of the fluorine pump air conditioner in the fluorine pump refrigeration mode and the mixed mode can be reduced to a certain extent.

[0113] See also Figure 5 , Figure 5 This is a schematic diagram of the structure of a refrigerant flow control device provided in an embodiment of the present application. Figure 5 As shown, the refrigerant flow control device 500 at least includes:

[0114] A first determination module 510 is used to determine a first target parameter according to a relationship between the actual superheat value and the preset superheat range, and to determine an adjustment amount of the first target parameter when the actual superheat value does not belong to the preset superheat range;

[0115] A second determination module 520 is used to determine an adjustment amount of a second target parameter according to the first target parameter, wherein the first target parameter and the second target parameter are respectively one of an operating frequency of a refrigerant pump and an opening degree of a throttling control;

[0116] The control module 530 is used to control the flow rate of the refrigerant based on the adjustment amount of the first parameter and the adjustment amount of the second target parameter.

[0117] In some embodiments, the actual superheat value is less than the minimum value of the preset superheat range, the first target parameter is the operating frequency of the refrigerant pump, and the second target parameter is the opening of the throttling control.

[0118] The first determination module 510 is specifically configured to determine, when the current operating frequency of the refrigerant pump is not the minimum operating frequency, a difference between the current operating frequency of the refrigerant pump and the minimum operating frequency as a downward adjustment amount of the first target parameter.

[0119] The second determination module 520 is specifically configured to determine the downward adjustment amount of the second target parameter according to the actual value of the superheat degree and the preset superheat range when the current operating frequency of the refrigerant pump is the minimum operating frequency.

[0120] In some embodiments, the actual superheat value is greater than the maximum value of the preset superheat range, the first target parameter is the opening of the throttling control, and the second target parameter is the operating frequency of the refrigerant pump.

[0121] The first determination module 510 is specifically configured to determine, when the current opening of the throttle control is not the maximum opening, a difference between the maximum opening and the current opening as an increase adjustment amount of the first target parameter.

[0122] The second determination module 520 is specifically configured to determine the increase adjustment amount of the second target parameter according to the actual superheat value and the preset superheat range when the current opening of the throttle control is the maximum opening.

[0123] An embodiment of the present application provides a computer program product including instructions. When the computer program product is executed on a computer or a processor, the computer or the processor executes the steps of any one of the methods in the above embodiments.

[0124] An embodiment of the present application further provides a computer storage medium, which can store multiple instructions, and the instructions are suitable for being loaded by a processor and executing the steps of any method in the above embodiments.

[0125] See also Figure 6 , Figure 6 This is a schematic diagram of the structure of a refrigeration device provided in an embodiment of the present application. Figure 6 As shown, the refrigeration device 600 may include at least: at least one processor 610 , a user interface 630 , a memory 650 , at least one communication bus 620 , at least one throttling control 640 and at least one refrigerant pump 660 .

[0126] The communication bus 620 is used to realize the connection and communication between these components.

[0127] The user interface 630 may include a display screen (Display) and a camera (Camera), and the optional user interface 630 may also include a standard wired interface and a wireless interface.

[0128] The throttling control unit 640 controls the amount of refrigerant delivered from the condenser to the evaporator by controlling the flow rate of the refrigerant, thereby controlling the superheat at the outlet position of the evaporator.

[0129] The refrigerant pump 660 is used to provide power for transporting the refrigerant from the condenser to the evaporator, so that the refrigerant can be transported from the condenser to the evaporator.

[0130] Among them, the refrigeration equipment processor 610 may include one or more processing cores. The refrigeration equipment processor 610 uses various interfaces and lines to connect various parts within the entire refrigeration equipment 600, and executes various functions and processes data of the refrigeration equipment 600 by running or executing instructions, programs, code sets or instruction sets stored in the memory 650, and calling data stored in the memory 650. Optionally, the refrigeration equipment processor 610 can be implemented in at least one hardware form of digital signal processing (Digital Signal Processing, DSP), field programmable gate array (Field-Programmable Gate Array, FPGA), and programmable logic array (Programmable Logic Array, PLA). The refrigeration equipment processor 610 can integrate one or a combination of a central processing unit (Central Processing Unit, CPU), a graphics processor (Graphics Processing Unit, GPU) and a modem. Among them, the CPU mainly processes the user interface and application programs; the GPU is responsible for rendering and drawing the content to be displayed on the display screen; and the modem is used to process wireless communications. It can be understood that the above-mentioned modem may not be integrated into the refrigeration equipment processor 610, and can be implemented separately through a chip.

[0131] The memory 650 may include a random access memory (RAM) or a read-only memory (ROM). Optionally, the memory 650 includes a non-transitory computer-readable storage medium. The memory 650 may be used to store instructions, programs, codes, code sets or instruction sets. The memory 650 may include a program storage area and a data storage area, wherein the program storage area may store instructions for at least one function (such as a touch function, a sound playback function, an image playback function, etc.), instructions for implementing the above-mentioned method embodiments, etc.; the data storage area may store data involved in the above-mentioned method embodiments, etc. The memory 650 may optionally be at least one storage device located away from the aforementioned refrigeration equipment processor 610. As Figure 6 As shown, the memory 650 as a computer storage medium may include a network communication module, a user interface module and an application program.

[0132] exist Figure 6 In the refrigeration device 600 shown, the user interface 630 is mainly used to provide an input interface for the user and obtain the data input by the user; and the refrigeration device processor 610 can be used to call the human eye image segmentation model building program stored in the memory 650, and specifically perform the following operations:

[0133] When the actual superheat value does not belong to the preset superheat range, determining a first target parameter according to a relationship between the actual superheat value and the preset superheat range, and determining an adjustment amount of the first target parameter;

[0134] Determining an adjustment amount of a second target parameter according to a first target parameter, wherein the first target parameter and the second target parameter are respectively one of an operating frequency of the refrigerant pump 660 and an opening degree of the throttle control 640;

[0135] The flow rate of the refrigerant is controlled based on the adjustment amount of the first target parameter and the adjustment amount of the second target parameter.

[0136] In some embodiments, the actual superheat value is less than the minimum value of the preset superheat interval, the first target parameter is the operating frequency of the refrigerant pump 660, and the second target parameter is the opening of the throttle control 640. When the refrigeration equipment processor 610 performs the step of determining the adjustment amount of the first target parameter, the following steps are specifically performed: when the current operating frequency of the refrigerant pump 660 is not the minimum operating frequency, the difference between the current operating frequency of the refrigerant pump 660 and the minimum operating frequency is determined as the downward adjustment amount of the first target parameter.

[0137] When the refrigeration equipment processor 610 executes the method of determining the adjustment amount of the second target parameter based on the first target parameter, it specifically performs the following steps: when the current operating frequency of the refrigerant pump 660 is the minimum operating frequency, the downward adjustment amount of the second target parameter is determined according to the actual superheat value and the preset superheat range.

[0138] In some embodiments, the actual superheat value is greater than the maximum value of the preset superheat range, the first target parameter is the opening of the throttling control 640 , and the second target parameter is the operating frequency of the refrigerant pump 660 .

[0139] When the refrigeration equipment processor 610 executes the determination of the adjustment amount of the first target parameter, it specifically performs the following steps: when the current opening of the throttle control 640 is not the maximum opening, the difference between the maximum opening and the current opening is determined as the increase adjustment amount of the first target parameter.

[0140] When the refrigeration equipment processor 610 executes the method of determining the adjustment amount of the second target parameter based on the first target parameter, it specifically performs the following steps: when the current opening of the throttling control 640 is the maximum opening, the increase adjustment amount of the second target parameter is determined based on the actual superheat value and the preset superheat range.

[0141] In the several embodiments provided in this specification, it should be understood that the disclosed devices and methods can be implemented in other ways. For example, the device embodiments described above are only schematic, for example, the division of modules is only a logical function division, and there may be other division methods in actual implementation, such as multiple modules or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or modules, which can be electrical, mechanical or other forms.

[0142] 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 modules, that is, they may be located in one place or distributed on multiple network modules. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0143] In the above embodiments, it can be implemented in whole or in part by software, hardware, firmware or any combination thereof. When implemented using software, it can be implemented in whole or in part in the form of a computer program product. The above-mentioned computer program product includes one or more computer instructions. When the above-mentioned computer program instructions are loaded and executed on a computer, the above-mentioned process or function according to the embodiment of the present application is generated in whole or in part. The above-mentioned computer can be a general-purpose computer, a special-purpose computer, a computer network or other programmable devices. The above-mentioned computer instructions can be stored in a computer-readable storage medium or transmitted by the above-mentioned computer-readable storage medium. The above-mentioned computer instructions can be transmitted from a website site, a computer, a server or a data center to another website site, a computer, a server or a data center by wired (such as coaxial cable, optical fiber, digital subscriber line (Digital Subscriber Line, DSL)) or wireless (such as infrared, wireless, microwave, etc.) mode. The above-mentioned computer-readable storage medium can be any available medium that a computer can access or a data storage device such as a server, a data center, etc. that contains one or more available media integrated. The above-mentioned available media can be magnetic media (for example, floppy disks, hard disks, tapes), optical media (for example, digital versatile discs (DVD)), or semiconductor media (for example, solid state disks (SSD)), etc.

[0144] It should be noted that, for the above-mentioned method embodiments, for the sake of simplicity of description, they are all expressed as a series of action combinations, but those skilled in the art should be aware that the embodiments of the present application are not limited by the described action sequence, because according to the embodiments of the present application, certain steps can be performed in other sequences or simultaneously. Secondly, those skilled in the art should also be aware that the embodiments described in the specification are all preferred embodiments, and the actions and modules involved are not necessarily required by the embodiments of the present application.

[0145] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0146] The above is a description of a refrigerant flow control method, device, computer storage medium and refrigeration equipment provided in an embodiment of the present application. For technicians in this field, according to the ideas of the embodiments of the present application, there may be changes in the specific implementation methods and application scopes. In summary, the content of this specification should not be understood as a limitation on the embodiments of the present application.

Claims

1. A method for controlling refrigerant flow, characterized in that: The method comprises: When the actual superheat value does not belong to the preset superheat range, determining a first target parameter according to a relationship between the actual superheat value and the preset superheat range, and determining an adjustment amount of the first target parameter; Determining an adjustment amount of a second target parameter according to a first target parameter, wherein the first target parameter and the second target parameter are respectively one of an operating frequency of a refrigerant pump and an opening degree of a throttling control; The flow rate of the refrigerant is controlled based on the adjustment amount of the first target parameter and the adjustment amount of the second target parameter.

2. The method according to claim 1, characterized in that The actual superheat value is less than the minimum value of the preset superheat range, the first target parameter is the operating frequency of the refrigerant pump, and the second target parameter is the opening of the throttling control.

3. The method according to claim 2, characterized in that The determining the adjustment amount of the first target parameter includes: When the current operating frequency of the refrigerant pump is not the minimum operating frequency, a difference between the current operating frequency of the refrigerant pump and the minimum operating frequency is determined as a downward adjustment amount of the first target parameter.

4. The method according to claim 3, characterized in that The step of determining the adjustment amount of the second target parameter according to the first target parameter includes: When the current operating frequency of the refrigerant pump is the minimum operating frequency, the downward adjustment amount of the second target parameter is determined according to the actual value of the superheat degree and the preset superheat range.

5. The method according to claim 1, characterized in that The actual superheat value is greater than the maximum value of the preset superheat range, the first target parameter is the opening of the throttling control, and the second target parameter is the operating frequency of the refrigerant pump.

6. The method according to claim 5, characterized in that The determining the adjustment amount of the first target parameter includes: When the current opening of the throttle control is not the maximum opening, the difference between the maximum opening and the current opening is determined as the increase adjustment amount of the first target parameter.

7. The method according to claim 6, characterized in that The step of determining the adjustment amount of the second target parameter according to the first target parameter includes: When the current opening of the throttling control is the maximum opening, the increase adjustment amount of the second target parameter is determined according to the actual value of the superheat degree and the preset superheat range.

8. A refrigerant flow control device, characterized in that: The device comprises: a first determination module, configured to determine a first target parameter according to a relationship between the actual superheat value and the preset superheat range, and determine an adjustment amount of the first target parameter when the actual superheat value does not belong to the preset superheat range; A second determination module is used to determine the adjustment amount of the second target parameter according to the first target parameter, wherein the first target parameter and the second target parameter are respectively one of the operating frequency of the refrigerant pump and the opening degree of the throttling control; A control module is used to control the flow rate of the refrigerant based on the adjustment amount of the first parameter and the adjustment amount of the second target parameter.

9. A computer storage medium, characterized in that The computer storage medium stores a plurality of instructions, which are suitable for being loaded by a processor and executing the method steps as claimed in any one of claims 1 to 7.

10. A refrigeration device, characterized in that: The refrigeration device comprises a memory, a processor and a computer program stored in the memory and executable on the processor, and the method steps as claimed in any one of claims 1 to 7 are implemented when the processor executes the program.

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