Air conditioner control method and device, air conditioner equipment and storage medium

Abstract

The application relates to an air conditioner control method and device, air conditioner equipment, a storage medium and a computer program product. The current operating parameter and the current condenser inlet air temperature of an air conditioner in a refrigeration mode are acquired, the current supercooling degree prediction value is obtained by performing supercooling degree prediction based on the current operating parameter of the air conditioner, the current supercooling degree target value is determined according to the current condenser inlet air temperature, finally, the current air conditioner adjustment strategy is obtained based on the difference between the current supercooling degree prediction value and the current supercooling degree target value, and the air conditioner is controlled to operate based on the current air conditioner adjustment strategy. The application can predict the supercooling degree at the condenser outlet by using the existing system parameters of a portable air source heat pump air conditioner, without modifying the structure and adding additional hardware equipment, thereby improving the adaptive adjustment capability of the air conditioner condenser and optimizing the control strategy of the portable air source heat pump air conditioner.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of air conditioners, and in particular to an air conditioner control method and device, an air conditioner, a storage medium and a computer program product. BACKGROUND

[0002] With the development of air conditioning technology, higher requirements are put forward for the heat exchange capacity of air conditioner equipment, and it is well known that the state of refrigerant in the pipeline of air conditioner equipment plays a crucial role in the heat exchange capacity of the heat exchanger. In the refrigeration mode, if the supercooling degree of refrigerant at the outlet of the condenser is too high or too low, the refrigerating capacity of the air conditioner will deviate from the optimal state. When the supercooling degree of refrigerant at the outlet of the condenser is too low, it indicates that the heat exchange of the condenser is insufficient, which will result in the performance of the system failing to be fully utilized. When the supercooling degree of refrigerant at the outlet of the condenser is too high, the thermal economy of the system is reduced, and even the negative influence will be transmitted to the evaporator. Therefore, it is crucial for the air conditioner equipment to accurately control the supercooling degree of refrigerant at the outlet of the condenser.

[0003] Currently, if the supercooling degree of refrigerant at the outlet of the condenser is to be calculated, the type of refrigerant of the air conditioner equipment, the outlet pressure of the compressor, the suction temperature of the compressor and other working parameters need to be obtained. However, the current portable air source heat pump air conditioner does not generally have a sensor for collecting system pressure, so it is difficult to calculate the supercooling degree of refrigerant at the outlet of the condenser by using the current configuration and operating parameters, and it is even more difficult to adaptively adjust and control the supercooling degree of refrigerant at the outlet of the condenser. SUMMARY

[0004] Therefore, it is necessary to provide an air conditioner control method, device, air conditioner equipment, storage medium and computer program product to solve the technical problem that the current portable air source heat pump air conditioner cannot adaptively adjust and control the supercooling degree of refrigerant at the outlet of the condenser.

[0005] In a first aspect, the present application provides an air conditioner control method, which comprises:

[0006] obtaining the current operating parameters and the current condenser inlet air temperature of the air conditioner in the refrigeration mode;

[0007] performing supercooling degree prediction based on the current operating parameters of the air conditioner to obtain a current supercooling degree prediction value;

[0008] determining a current supercooling degree target value according to the current condenser inlet air temperature;

[0009] obtaining a current air conditioner adjustment strategy based on the difference between the current supercooling degree prediction value and the current supercooling degree target value, and controlling the air conditioner to operate based on the current air conditioner adjustment strategy.

[0010] In one of the embodiments, the current operating parameters include air conditioner operating power, compressor operating frequency, compressor suction temperature, evaporator outlet air temperature, condenser outlet pipe temperature, and outdoor fan rotating speed.

[0011] In one of the embodiments, the supercooling degree prediction based on the current operating parameters of the air conditioner obtains a current supercooling degree prediction value, including:

[0012] The air conditioner operating power, the compressor operating frequency, the compressor suction temperature, the evaporator outlet air temperature, the condenser outlet pipe temperature, and the outdoor fan rotating speed are respectively weighted with corresponding correction factors to obtain the current supercooling degree prediction value.

[0013] In one of the embodiments, the current supercooling degree target value is determined according to the current condenser inlet air temperature, including:

[0014] According to the condenser inlet air temperature interval to which the current condenser inlet air temperature belongs, a corresponding current supercooling degree target value is obtained.

[0015] In one of the embodiments, the current supercooling degree target value is obtained according to the condenser inlet air temperature interval to which the current condenser inlet air temperature belongs, including:

[0016] According to the condenser inlet air temperature interval to which the current condenser inlet air temperature belongs and a preset corresponding relationship between the condenser inlet air temperature interval and the supercooling degree target value, a corresponding current supercooling degree target value is obtained.

[0017] In one of the embodiments, the number of condenser inlet air temperature intervals is four, and the current supercooling degree target value is obtained according to the condenser inlet air temperature interval to which the current condenser inlet air temperature belongs, including at least one of the following:

[0018] When the condenser inlet air temperature interval to which the current condenser inlet air temperature belongs is a first condenser inlet air temperature interval (0-25℃], a value range of the corresponding current supercooling degree target value includes [14-16℃];

[0019] When the condenser inlet air temperature interval to which the current condenser inlet air temperature belongs is a second condenser inlet air temperature interval (25-30℃], a value range of the corresponding current supercooling degree target value includes [15-17℃];

[0020] When the condenser inlet air temperature interval to which the current condenser inlet air temperature belongs is a third condenser inlet air temperature interval (30-35℃], a value range of the corresponding current supercooling degree target value includes [16-18℃];

[0021] When the current condenser inlet air temperature belongs to the fourth inlet air temperature interval (35~+∞ ℃), the value range of the current supercooling degree target value corresponding obtained includes [17~19 ℃].

[0022] In one of the embodiments, the current air conditioner adjustment strategy is obtained based on the difference between the current supercooling degree prediction value and the current supercooling degree target value, including:

[0023] According to the difference interval to which the difference between the current supercooling degree prediction value and the current supercooling degree target value belongs, and the preset corresponding relationship between the difference interval and the air conditioner adjustment strategy, the current air conditioner adjustment strategy is obtained.

[0024] In one of the embodiments, the air conditioner adjustment strategy includes: controlling the compressor of the air conditioner to perform the frequency reduction operation and controlling the internal fan of the air conditioner to perform the speed reduction operation, controlling the compressor of the air conditioner to perform the current frequency maintenance operation and controlling the internal fan of the air conditioner to perform the speed reduction operation, controlling the compressor of the air conditioner to perform the current frequency maintenance operation and controlling the internal fan of the air conditioner to perform the current speed maintenance operation, controlling the compressor of the air conditioner to perform the current frequency maintenance operation and controlling the internal fan of the air conditioner to perform the speed increase operation, and controlling the compressor of the air conditioner to perform the frequency increase operation and controlling the internal fan of the air conditioner to perform the speed increase operation.

[0025] In one of the embodiments, the number of the difference intervals is 7; the current air conditioner adjustment strategy is obtained based on the difference between the current supercooling degree prediction value and the current supercooling degree target value, and the air conditioner is controlled to operate based on the current air conditioner adjustment strategy, including at least one of the following:

[0026] When the difference between the current supercooling degree prediction value and the current supercooling degree target value belongs to the first difference interval, the compressor of the air conditioner is controlled to perform the frequency reduction operation at a first frequency reduction rate, and the internal fan of the air conditioner is controlled to perform the speed reduction operation at a first speed reduction rate;

[0027] When the difference between the current supercooling degree prediction value and the current supercooling degree target value belongs to the second difference interval, the compressor of the air conditioner is controlled to perform the frequency reduction operation at a second frequency reduction rate, and the internal fan of the air conditioner is controlled to perform the speed reduction operation at a second speed reduction rate;

[0028] When the difference between the current supercooling degree prediction value and the current supercooling degree target value belongs to the third difference interval, the compressor of the air conditioner is controlled to perform the current frequency maintenance operation, and the internal fan of the air conditioner is controlled to perform the speed reduction operation at a third speed reduction rate;

[0029] when the difference value interval to which the difference between the current supercooling degree predicted value and the current supercooling degree target value belongs is the fourth difference value interval, the compressor of the air conditioner is controlled to maintain current frequency operation, and the internal fan of the air conditioner is controlled to maintain current speed operation;

[0030] when the difference value interval to which the difference between the current supercooling degree predicted value and the current supercooling degree target value belongs is the fifth difference value interval, the compressor of the air conditioner is controlled to maintain current frequency operation, and the internal fan of the air conditioner is controlled to perform speed-up operation at a first speed-up rate;

[0031] when the difference value interval to which the difference between the current supercooling degree predicted value and the current supercooling degree target value belongs is the sixth difference value interval, the compressor of the air conditioner is controlled to perform frequency increase operation at a first frequency increase rate, and the internal fan of the air conditioner is controlled to perform speed-up operation at a second speed-up rate;

[0032] when the difference value interval to which the difference between the current supercooling degree predicted value and the current supercooling degree target value belongs is the seventh difference value interval, the compressor of the air conditioner is controlled to perform frequency increase operation at a second frequency increase rate, and the internal fan of the air conditioner is controlled to perform speed-up operation at a third speed-up rate;

[0033] wherein, the upper limit value of the first difference value interval is greater than or equal to the lower limit value of the second difference value interval, the upper limit value of the second difference value interval is greater than or equal to the lower limit value of the third difference value interval, the upper limit value of the third difference value interval is greater than or equal to the lower limit value of the fourth difference value interval, the upper limit value of the fourth difference value interval is greater than or equal to the lower limit value of the fifth difference value interval, the upper limit value of the fifth difference value interval is greater than or equal to the lower limit value of the sixth difference value interval, the upper limit value of the sixth difference value interval is greater than or equal to the lower limit value of the seventh difference value interval; the first frequency decrease rate is greater than the second frequency decrease rate, the first frequency increase rate is less than the second frequency increase rate, the first speed decrease rate is greater than the second speed decrease rate, the second speed decrease rate is greater than the third speed decrease rate, the first speed-up rate is less than the second speed-up rate, and the second speed-up rate is less than the third speed-up rate.

[0034] In one of the embodiments, the current air conditioner adjustment strategy is obtained based on the difference between the current supercooling degree predicted value and the current supercooling degree target value, and the air conditioner is controlled to operate based on the current air conditioner adjustment strategy, including at least one of the following:

[0035] when the difference value interval to which the difference between the current supercooling degree predicted value and the current supercooling degree target value belongs is the first difference value interval (5~+∞℃), the compressor of the air conditioner is controlled to perform frequency decrease operation at 5Hz / 5min, and the internal fan of the air conditioner is controlled to perform speed decrease operation at 50rpm / 5min;

[0036] when the difference value interval to which the difference between the current supercooling degree prediction value and the current supercooling degree target value belongs is a second difference value interval (3-5℃], the compressor of the air conditioner is controlled to perform a frequency reduction operation at 3Hz / 5min, and the inner fan of the air conditioner is controlled to perform a speed reduction operation at 25rpm / 5min;

[0037] when the difference value interval to which the difference between the current supercooling degree prediction value and the current supercooling degree target value belongs is a third difference value interval (1-3℃], the compressor of the air conditioner is controlled to maintain the current frequency operation, and the inner fan of the air conditioner is controlled to perform a speed reduction operation at 10rpm / 5min;

[0038] when the difference value interval to which the difference between the current supercooling degree prediction value and the current supercooling degree target value belongs is a fourth difference value interval [-1-1℃], the compressor of the air conditioner is controlled to maintain the current frequency operation, and the inner fan of the air conditioner is controlled to maintain the current speed operation;

[0039] when the difference value interval to which the difference between the current supercooling degree prediction value and the current supercooling degree target value belongs is a fifth difference value interval [-3--1℃), the compressor of the air conditioner is controlled to maintain the current frequency operation, and the inner fan of the air conditioner is controlled to perform a speed increase operation at 10rpm / 5min;

[0040] when the difference value interval to which the difference between the current supercooling degree prediction value and the current supercooling degree target value belongs is a sixth difference value interval [-5--3℃), the compressor of the air conditioner is controlled to perform a frequency increase operation at 3Hz / 5min, and the inner fan of the air conditioner is controlled to perform a speed increase operation at 25rpm / 5min;

[0041] when the difference value interval to which the difference between the current supercooling degree prediction value and the current supercooling degree target value belongs is a seventh difference value interval (-∞--5℃), the compressor of the air conditioner is controlled to perform a frequency increase operation at 5Hz / 5min, and the inner fan of the air conditioner is controlled to perform a speed increase operation at 50rpm / 5min.

[0042] In a second aspect, the present application also provides an air conditioner control device, which comprises:

[0043] a parameter acquisition module, configured to acquire current operating parameters of an air conditioner in a cooling mode and a current condenser inlet air temperature;

[0044] a supercooling degree prediction module, configured to perform supercooling degree prediction based on the current operating parameters of the air conditioner to obtain a current supercooling degree prediction value;

[0045] a target value acquisition module, configured to determine a current supercooling degree target value according to the current condenser inlet air temperature;

[0046] The operation control module is configured to obtain a current air conditioner adjustment strategy based on a difference between the current supercooling degree prediction value and the current supercooling degree target value, and control the air conditioner to operate based on the current air conditioner adjustment strategy.

[0047] In a third aspect, the present application further provides an air conditioner device, comprising a control module and a data acquisition module, wherein the data acquisition module is connected to the control module, the data acquisition module is configured to acquire current operating parameters and a current condenser inlet air temperature of the air conditioner in a cooling mode, and the control module is configured to control the air conditioner based on the above-mentioned air conditioner control method according to the current operating parameters and the current condenser inlet air temperature.

[0048] In a fourth aspect, the present application further provides a computer readable storage medium, wherein the computer readable storage medium stores a computer program, and the computer program is configured to implement the steps of the above-mentioned air conditioner control method when executed by a processor.

[0049] In a fifth aspect, the present application further provides a computer program product, comprising a computer program, and the computer program is configured to implement the steps of the above-mentioned air conditioner control method when executed by a processor.

[0050] The above-mentioned air conditioner control method, device, air conditioner device, storage medium and computer program product can predict the supercooling degree at the outlet of the condenser by acquiring current operating parameters and a current condenser inlet air temperature of the air conditioner in a cooling mode, obtaining a current supercooling degree prediction value based on the current operating parameters of the air conditioner, determining a current supercooling degree target value according to the current condenser inlet air temperature, and finally obtaining a current air conditioner adjustment strategy based on a difference between the current supercooling degree prediction value and the current supercooling degree target value, and controlling the air conditioner to operate based on the current air conditioner adjustment strategy. The present application can predict the supercooling degree at the outlet of the condenser by using the existing system parameters of the portable air source heat pump air conditioner, without modifying the structure and adding additional hardware devices, thereby improving the adaptive adjustment capability of the air conditioner condenser and optimizing the control strategy of the portable air source heat pump air conditioner. BRIEF DESCRIPTION OF DRAWINGS

[0051] Figure 1 An application environment diagram of the air conditioner control method in one embodiment;

[0052] Figure 2 A flowchart of the air conditioner control method in one embodiment;

[0053] Figure 3 A comparison diagram of the supercooling degree prediction value and the supercooling degree measured value in one embodiment;

[0054] Figure 4 A structural block diagram of the air conditioner control device in one embodiment;

[0055] Figure 5 Fig. 1 is a schematic diagram of an internal structure of a computer device according to an embodiment;

[0056] Figure 6 Fig. 2 is a schematic diagram of a system block of an air conditioner device according to an embodiment;

[0057] Figure 7 Fig. 3 is a schematic diagram of a control logic framework of an air conditioner device according to an embodiment. DETAILED DESCRIPTION

[0058] In order to make the purposes, technical solutions and advantages of the present application clearer, further detailed description will be made to the present application in combination with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application, and are not used to limit the present application.

[0059] The air conditioner control method provided by the embodiments of the present application can be applied in an application environment as shown in Figure 1 . Specifically, the air conditioner control method is applied in a portable air source heat pump air conditioner device. A control module 110 of the air conditioner device is connected to a data acquisition module 120 of the air conditioner device to acquire current operating parameters of the air conditioner device in a cooling mode and a current condenser inlet air temperature. The control module 110 further performs supercooling degree prediction based on the current operating parameters of the air conditioner device to obtain a current supercooling degree prediction value, determines a current supercooling degree target value according to the current condenser inlet air temperature, and finally obtains a current air conditioner adjustment strategy based on a difference between the current supercooling degree prediction value and the current supercooling degree target value, and controls the air conditioner device to operate based on the current air conditioner adjustment strategy. It should be understood that the control module 110 for controlling the air conditioner device can be a controller directly arranged in the air conditioner device, or an external control system realized based on wireless communication.

[0060] In an embodiment, as shown in Figure 2 , an air conditioner control method is provided. The air conditioner control method is taken as an example to be described below in combination with the control module 110 in Figure 1 . The air conditioner control method includes the following S200 to S800.

[0061] S200: Acquire current operating parameters of the air conditioner in a cooling mode and a current condenser inlet air temperature.

[0062] After the air conditioner device receives a start-up instruction to start operating, the air conditioner device controls hardware devices such as an indoor fan, an evaporator, a compressor and a condenser to start working, so as to realize a cooling or heating function. The embodiments of the present application predict the supercooling degree of refrigerant at the outlet of the condenser in the cooling mode of the air conditioner device, determine an air conditioner adjustment strategy based on the supercooling degree prediction value, and then control the air conditioner to operate, so as to maintain the cooling capacity of the air conditioner at an optimal state.

[0063] Specifically, the current operating parameters of the air conditioner can be understood as the operating parameters of each hardware device of the air conditioner, and can include but are not limited to one or more of the operating parameters such as air conditioner operating power, compressor operating frequency, compressor suction temperature, evaporator outlet air temperature, condenser outlet pipe temperature, and outdoor fan speed. The type of the current operating parameters of the air conditioner obtained is not fixed, and can be determined according to the influence relationship of the working process of each hardware device on the supercooling degree of the refrigerant at the condenser outlet. In this embodiment, the operating parameters that will affect the supercooling degree of the refrigerant at the condenser outlet can be selected, and the current values thereof are obtained for subsequent supercooling degree prediction.

[0064] It can be understood that the operating parameters of each hardware device of the air conditioner can be obtained by setting corresponding sensor devices at the corresponding positions of the hardware devices, or by the hardware devices collecting their own operating parameters. After the above-mentioned various operating parameters of the air conditioner are collected, they can be all collected to the data collection module, the data collection module can perform numerical conversion preprocessing on the data information to obtain numerical information recognizable by the control module, and then transmit to the control module.

[0065] Further, the supercooling degree of the refrigerant at the condenser outlet is defined as the difference between the saturated liquid temperature corresponding to the condenser condensing pressure and the actual temperature of the liquid at the condenser outlet, which can be understood as the degree of sufficiency of heat exchange of the refrigerant in the condenser. Correspondingly, whether the heat exchange of the condenser is sufficient or not is closely related to the air dry-bulb temperature at the condenser inlet, i.e. the condenser inlet temperature, and then the condenser inlet temperature can be obtained to determine the target value of the supercooling degree of the refrigerant at the condenser outlet.

[0066] The condenser inlet temperature can be collected in real time by the temperature sensor arranged at the condenser inlet side and then collected to the data collection module. After the data collection module receives the air dry-bulb temperature parameter at the condenser inlet side fed back by the condenser inlet temperature sensor, the data is first preprocessed by numerical conversion to obtain condenser inlet temperature numerical information recognizable by the control module, and then transmitted to the control module. For example, the condenser inlet dry-bulb temperature parameter fed back by the condenser inlet temperature sensor to the data collection module is in the form of "20℃", and after the data collection module receives this data information, the condenser inlet dry-bulb temperature parameter "20℃" is converted into numerical parameter "20" and then transmitted to the control module.

[0067] S400: predicting the supercooling degree based on the current operating parameters of the air conditioner to obtain a current supercooling degree prediction value;

[0068] Specifically, after receiving the current operating parameters aggregated and pre-processed by the data collection module, the supercooling degree prediction can be performed based on the received data to obtain a current supercooling degree prediction value. The current supercooling degree prediction value is the supercooling degree of the refrigerant at the outlet of the condenser predicted at the time of collection of the operating parameter data, which can be used to represent the actual value of the supercooling degree at the time of collection of the operating parameter data, and can be used to obtain the air conditioning adjustment strategy after comparison with the target value.

[0069] The way of predicting the supercooling degree based on the current operating parameters of the air conditioner is not unique. The current supercooling degree prediction value can be obtained by calculating the current operating parameters through a preset supercooling degree prediction formula, or a supercooling degree prediction model can be trained in advance according to historical operating parameter data, and then the current operating parameters of the air conditioner are predicted through the supercooling degree prediction model to obtain the current supercooling degree prediction value.

[0070] S600: determining a current supercooling degree target value according to the current condenser inlet air temperature;

[0071] Specifically, the supercooling degree target value represents the target value that the supercooling degree of the refrigerant at the outlet of the condenser must reach. When the supercooling degree is at the target value, the heat exchange of the condenser is sufficient and the refrigerating capacity of the air conditioner is at the best state, which can make the refrigeration effect and thermal economic performance of the air conditioning equipment optimal.

[0072] It can be understood that the way of determining the current supercooling degree target value according to the current condenser inlet air temperature can be calculating the current condenser inlet air temperature based on a preset calculation formula to obtain the current supercooling degree target value, or the corresponding relationship between the condenser inlet air temperature and the supercooling degree target value can be determined in advance through experiments, and then the current supercooling degree target value can be determined according to the current condenser inlet air temperature and the preset corresponding relationship. The preset corresponding relationship can be a numerical value corresponding relationship, that is, each current condenser inlet air temperature corresponds to a current supercooling degree target value. Alternatively, the condenser inlet air temperature can be divided into multiple inlet air temperature intervals, and the preset corresponding relationship is an inlet air temperature interval corresponding to a supercooling degree target value, that is, each inlet air temperature interval corresponds to a supercooling degree target value, and then the current supercooling degree target value can be determined according to the inlet air temperature interval to which the current condenser inlet air temperature belongs.

[0073] S800: obtaining a current air conditioning adjustment strategy based on the difference between the current supercooling degree prediction value and the current supercooling degree target value, and controlling the operation of the air conditioner based on the current air conditioning adjustment strategy.

[0074] The difference between the current supercooling degree prediction value and the current supercooling degree target value can be understood as the degree of deviation of the supercooling degree of the refrigerant at the outlet of the condenser at the current moment from the target value. According to the difference, it can be determined how to adjust the hardware devices of the air conditioning equipment at this time, so that the supercooling degree prediction value changes to the supercooling degree target value, and then the condenser heat exchange is sufficient and the refrigerating capacity of the air conditioner is in the best state, so that the refrigeration effect and the thermal economic performance of the air conditioning equipment are optimal.

[0075] Correspondingly, the air conditioning adjustment strategy represents the way of adjusting the hardware devices of the air conditioning equipment, which can include but is not limited to indoor fan, evaporator, compressor and condenser, etc. Specifically, it can be adjusting the speed of the indoor fan, adjusting the operating gear of the evaporator fan, adjusting the operating speed or operating frequency of the compressor, and adjusting the operating gear of the condenser fan, etc. The adjustment method can be to increase the speed, operating gear and frequency of the parameters by a preset threshold, to decrease the speed, operating gear and frequency of the parameters by a preset threshold, or to maintain unchanged. It can be understood that the air conditioning adjustment strategy obtained by the embodiment can be a separate adjustment of the parameters of the above-mentioned hardware devices, or an adjustment in any combination form, as long as the purpose of changing the supercooling degree prediction value to the supercooling degree target value can be achieved.

[0076] Specifically, after obtaining the current supercooling degree prediction value and the current supercooling degree target value, the corresponding relationship between the difference between the two values and the preset difference value and the air conditioning adjustment strategy is obtained, and the current air conditioning adjustment strategy is obtained. Further, according to the adjustment method indicated by the hardware devices in the current air conditioning adjustment strategy, the hardware devices of the air conditioning equipment are controlled to operate according to the adjustment method.

[0077] In addition, the process of obtaining the current operating parameters of the air conditioning in the refrigeration mode and the current condenser inlet air temperature, and analyzing the current supercooling degree prediction value and the current supercooling degree target value, and then obtaining the current air conditioning adjustment strategy to control the air conditioning operation of the above-mentioned S200 to S800 can be executed after the air conditioning equipment receives the start instruction to start operation, or can be executed after the air conditioning equipment starts the refrigeration mode operation for a preset stable time length based on the timing module, or can be executed once every preset interval time length based on the timing module.

[0078] In the experiment of supercooling degree prediction of air conditioning equipment, it is found that in the initial stage of the operation of the air conditioning equipment, the operating parameters such as the air conditioning operating power, the compressor operating frequency, the compressor suction temperature, the evaporator outlet air temperature, the condenser outlet pipe temperature and the external fan speed are in a transition state from fluctuation to stability. In the transition stage of frequent data fluctuation, it is not suitable to predict the supercooling degree to realize the adaptive control of the air conditioner. Therefore, in the embodiment, the control module activates the start timing module to time from the moment when the refrigeration mode is started. When the timing reaches the preset stable time length, the data acquisition module obtains the first set of current operating parameters and the first current condenser inlet air temperature of the air conditioning equipment, and controls the timing module to restart timing from the current time. When the timing module timing reaches the preset interval time length, the data acquisition module obtains the second set of current operating parameters and the second current condenser inlet air temperature, and controls the timing module to restart timing from the current time. Subsequently, each time the preset interval time length is reached, the data acquisition module obtains a set of current operating parameters and a current condenser inlet air temperature.

[0079] Further, from the obtained second set of current operating parameters and the second current condenser inlet air temperature, the adaptive adjustment of the air conditioning equipment can be performed once according to S200-S800 until the nth set of current operating parameters and the nth current condenser inlet air temperature, or until the air conditioning equipment stops running.

[0080] The preset stable time length and the preset interval time length are not fixed in value, and can be selected according to the specific parameters of the air conditioning equipment and the actual demand. For example, the preset stable time length can be selected in the range of 25min-45min, and in the embodiment, the preset stable time length can be selected as 30min. The preset interval time length can be selected in the range of 0-25min, and in the embodiment, the preset interval time length can be selected as 5min.

[0081] The above air conditioning control method can predict the supercooling degree at the outlet of the condenser by using the existing system parameters of the portable air source heat pump air conditioner, without modifying the structure and adding additional hardware equipment, thereby improving the adaptive adjustment capability of the air conditioning equipment and optimizing the control strategy of the portable air source heat pump air conditioner.

[0082] In one embodiment, the current operating parameters include the air conditioning operating power, the compressor operating frequency, the compressor suction temperature, the evaporator outlet air temperature, the condenser outlet pipe temperature and the external fan speed.

[0083] Specifically, the air conditioner running power represents a real-time power parameter (unit: W, watt) of the air conditioner device running process, which can be collected by the power driving module of the air conditioner device. The power driving module sends the real-time monitored running power information to the data acquisition module. After receiving the running power information fed back by the power driving module, the data acquisition module first performs numerical conversion preprocessing on the running power information to obtain air conditioner running power numerical information that can be recognized by the control module, and then transmits it to the control module. For example, the air conditioner running power parameter fed back by the power driving module to the data acquisition module is 200 W. After receiving the running power information, the data acquisition module converts the air conditioner running power parameter "200 W" into a numerical parameter "200".

[0084] The compressor running information can be a compressor running frequency (unit: Hz, hertz) or a compressor running speed (unit: rpm, revolutions per minute). The compressor running frequency can be collected by the compressor driving module of the air conditioner device. The compressor driving module sends the real-time monitored compressor running frequency to the data acquisition module. After receiving the compressor running frequency fed back by the compressor driving module, the data acquisition module first performs numerical conversion preprocessing on the compressor running frequency to obtain compressor running frequency numerical information that can be recognized by the control module, and then transmits it to the control module. For example, the compressor running frequency parameter fed back by the compressor driving module to the data acquisition module is 75 Hz. After receiving the compressor running frequency parameter, the data acquisition module converts the compressor running frequency parameter "75 Hz" into a numerical parameter "75".

[0085] In addition, the compressor running speed is fed back by the compressor control unit. After receiving the compressor running speed fed back by the compressor control unit, the data acquisition module first performs numerical conversion preprocessing on the compressor running speed to obtain compressor running frequency numerical information that can be recognized by the control module, and then transmits it to the control module. The preprocessing process here can be preprocessing according to "compressor running frequency = compressor running speed / 60" to obtain the compressor running frequency. For example, when the compressor control unit feeds back a compressor running speed parameter of 4800 rpm to the data acquisition module, the data acquisition module receives this data information and preprocesses it to obtain a compressor running frequency of 4800 / 60 = 80. Then the data acquisition module converts the received compressor running speed parameter "4800 rpm" into a numerical parameter "80".

[0086] The compressor suction temperature can be collected by the temperature sensor arranged in the compressor suction pipe (unit: ℃). The temperature sensor of the compressor suction pipe sends the compressor suction temperature parameter to the data acquisition module in real time. After receiving the compressor suction temperature parameter, the data acquisition module first carries out numerical conversion preprocessing on the data to obtain the compressor suction temperature numerical information that can be recognized by the control module, and then transmits it to the control module. For example, the compressor suction temperature parameter fed back by the temperature sensor of the compressor suction pipe to the data acquisition module is 20℃. After receiving the data information, the data acquisition module converts the compressor suction temperature parameter "20℃" into numerical parameter "20".

[0087] The evaporator outlet air temperature represents the air dry bulb temperature on the evaporator outlet side (unit: ℃) and can be collected by the temperature sensor arranged on the evaporator outlet side. The temperature sensor on the evaporator outlet side sends the evaporator outlet temperature parameter to the data acquisition module in real time. After receiving the evaporator outlet temperature parameter, the data acquisition module first carries out numerical conversion preprocessing on the data to obtain the evaporator outlet temperature numerical information that can be recognized by the control module, and then transmits it to the control module. For example, the evaporator outlet temperature parameter fed back by the temperature sensor of the evaporator outlet side to the data acquisition module is 20℃. After receiving the data information, the data acquisition module converts the evaporator outlet temperature parameter "20℃" into numerical parameter "20".

[0088] The condenser outlet pipe temperature can be collected by the temperature sensor arranged at the condenser outlet (unit: ℃). The temperature sensor of the condenser outlet sends the condenser outlet pipe temperature parameter to the data acquisition module in real time. After receiving the condenser outlet pipe temperature parameter, the data acquisition module first carries out numerical conversion preprocessing on the data to obtain the condenser outlet pipe temperature numerical information that can be recognized by the control module, and then transmits it to the control module. For example, the condenser outlet pipe temperature parameter fed back by the temperature sensor of the condenser outlet to the data acquisition module is 20℃. After receiving the data information, the data acquisition module converts the condenser outlet pipe temperature parameter "20℃" into numerical parameter "20".

[0089] The outdoor fan rotating speed represents the operating rotating speed (unit: rpm, i.e., revolutions per minute) of the condenser fan (also referred to as the outdoor fan) of the air conditioning device, which can be collected in real time by the fan driving module. The fan driving module sends the outdoor fan rotating speed information monitored in real time to the data collection module. After receiving the outdoor fan rotating speed fed back by the fan driving module, the data collection module first performs numerical conversion preprocessing on the data to obtain outdoor fan rotating speed numerical information recognizable by the control module, and then transmits the outdoor fan rotating speed numerical information to the control module. For example, the outdoor fan rotating speed parameter fed back by the fan driving module to the data collection module is 1500 rpm. After receiving the data information, the data collection module converts the outdoor fan rotating speed parameter "1500 rpm" into a numerical parameter "1500".

[0090] In one embodiment, S400 includes: performing weighted calculation on the air conditioning operating power, the compressor operating frequency, the compressor suction temperature, the evaporator outlet air temperature, the condenser outlet pipe temperature, and the outdoor fan rotating speed respectively with corresponding correction coefficients to obtain a current supercooling degree prediction value.

[0091] Specifically, before the supercooling degree of the refrigerant at the condenser outlet is predicted according to the above-mentioned operating parameters, the correction coefficients corresponding to the operating parameters need to be determined in advance according to the maximum refrigerating capacity, the maximum air supply capacity, the compressor parameters, and the air duct layout of the air conditioning device, and then a supercooling degree prediction mathematical model used to calculate the supercooling degree prediction value is determined. The supercooling degree prediction mathematical model can be expressed as follows:

[0092] T 过冷度 = αA 空调器功率 + βB 压缩机频率 + γC 吸气温度 + δD 蒸发器出风温度

[0093] + εE 冷凝器出口管温 + ξF 外风机转速 + G

[0094] wherein T 过冷度 is the supercooling degree of the refrigerant at the condenser outlet (℃) calculated by the supercooling degree prediction mathematical model, A 空调器功率 is the operating power of the air conditioning device (W), B 压缩机频率 is the operating frequency of the compressor of the air conditioning device (Hz), C 吸气温度 is the suction temperature of the compressor collected by the compressor suction temperature sensor (℃), D 蒸发器出风温度 is the dry-bulb temperature of the air at the outlet of the evaporator of the air conditioner collected by the evaporator outlet temperature sensor (℃), E 冷凝器出口管温 is the outlet temperature of the condenser of the air conditioner collected by the condenser outlet temperature sensor (℃), and F 外风机转速G is a constant term of the condenser supercooling degree prediction mathematical model, and a, b, g, d, e, z are correction coefficients of the air conditioner operating power, the compressor operating frequency, the compressor suction temperature, the evaporator outlet air temperature, the condenser outlet pipe temperature, and the outdoor fan rotating speed, respectively.

[0095] It can be understood that a, b, g, d, e, z and G are all dimensionless parameters and have no specific practical meaning. The values of the above parameters are not fixed and can vary according to the maximum refrigerating capacity, the maximum air supply, the compressor parameters, and the air duct layout of the air conditioning equipment. For example, taking an air conditioning equipment with a maximum refrigerating capacity of 750 W and a maximum air supply of 150 m 3 / h as an example, the value range of the constant term G can be 60-70, and the value of the constant term G of the supercooling degree prediction mathematical model used in this embodiment can be selected as 65.10 according to experimental determination. Similarly, taking an air conditioning equipment with a maximum refrigerating capacity of 750 W and a maximum air supply of 150 m 3 / h as an example, the value ranges of a, b, g, d, e, z can be 0.1-0.3, -0.5--0.7, 0.1-0.2, -0.6--0.8, -0.75--0.95, and -0.0005--0.0015, respectively. The values of the correction coefficients a, b, g, d, e, z of the supercooling degree prediction mathematical model used in this embodiment can be selected as 0.195, -0.622, 0.111, -0.76, -0.89, and -0.001, respectively, according to experimental determination. It can be understood that the example values listed above are only used for illustration and cannot limit the supercooling degree prediction mathematical model of the present application.

[0096] Figure 3 The comparison chart is obtained by comparing the supercooling degree prediction value obtained by using the supercooling degree prediction mathematical model provided in the present application with the supercooling degree measured value obtained by actually measuring the supercooling degree of the refrigerant at the outlet of the condenser during the experimental test process. It can be seen that the change trend of the supercooling degree prediction value calculated by the supercooling degree prediction mathematical model provided in the present application is basically consistent with that of the supercooling degree measured value. According to the experimental data, the comprehensive error between the two is ≤10%. The supercooling degree prediction mathematical model provided in the present application can meet the current use demand of air conditioning equipment for supercooling degree prediction.

[0097] In one embodiment, S600 includes: obtaining a current supercooling degree target value according to the current condenser inlet air temperature belonging to the condenser inlet air temperature interval.

[0098] It is understandable that the current subcooling target value can be obtained by dividing the condenser inlet air temperature into multiple inlet air temperature ranges, and then obtaining the current subcooling target value according to the correspondence between the inlet air temperature range and the subcooling target value, or according to the calculation formula for the subcooling target value corresponding to the inlet air temperature range. In this embodiment, obtaining the current subcooling target value according to the inlet air temperature range to which the current condenser inlet air temperature belongs includes: obtaining the current subcooling target value according to the inlet air temperature range to which the current condenser inlet air temperature belongs and the preset correspondence between the inlet air temperature range and the subcooling target value. That is, each inlet air temperature range corresponds to at least one subcooling target value, and then the current subcooling target value is determined according to the inlet air temperature range to which the current condenser inlet air temperature belongs.

[0099] Specifically, when dividing the condenser inlet air temperature into multiple inlet air temperature ranges, the division method and the number of ranges are not fixed. Each inlet air temperature range can be divided with a fixed temperature range, or it can be divided based on progressive temperature ranges, or it can be an irregular inlet air temperature range divided based on arbitrary temperature ranges. The settings can be selected according to the actual parameters of the specific air conditioner and are not limited.

[0100] Taking a set number of four inlet air temperature ranges as an example, in one embodiment, the current subcooling target value is obtained according to the inlet air temperature range to which the current condenser inlet air temperature belongs, including: the current condenser inlet air temperature T 冷凝器进风温度 When the inlet air temperature range is the first inlet air temperature range (0~25℃), the corresponding target value T of the current subcooling is obtained. 过冷度目标值 The value range includes [14~16℃]. This can be understood as, when T... 冷凝器进风温度 At ≤25℃, T 过冷度目标值 The value is 15℃±1℃.

[0101] In one embodiment, the target subcooling value is obtained according to the inlet air temperature range to which the current condenser inlet air temperature belongs, including: when the inlet air temperature range to which the current condenser inlet air temperature belongs is the second inlet air temperature range (25~30℃), the target subcooling value is obtained in the range of [15~17℃]. This can be understood as: when 25℃ < T 冷凝器进风温度 At ≤30℃, T 过冷度目标值 The value is 16℃±1℃.

[0102] In one embodiment, the target subcooling value is obtained based on the inlet air temperature range to which the current condenser inlet air temperature belongs. Specifically, when the current condenser inlet air temperature range is the third inlet air temperature range (30–35°C), the target subcooling value is obtained within the range of [16–18°C]. This can be understood as, when 30°C < T... 冷凝器进风温度 At ≤35℃, T过冷度目标值 the value of T

[0103] In an embodiment, the current supercooling degree target value is obtained according to the current condenser inlet air temperature interval to which the current condenser inlet air temperature belongs, including: when the current condenser inlet air temperature interval to which the current condenser inlet air temperature belongs is the fourth condenser inlet air temperature interval (35~+∞ ℃), the value range of the current supercooling degree target value obtained includes [17~19 ℃]. It can be understood that when T 冷凝器进风温度 > 35 ℃, the value of T 过冷度目标值 is 18 ℃±1 ℃.

[0104] In an embodiment, the current air conditioner adjustment strategy is obtained based on the difference between the current supercooling degree prediction value and the current supercooling degree target value in S800, including: obtaining the current air conditioner adjustment strategy according to the difference interval to which the difference between the current supercooling degree prediction value and the current supercooling degree target value belongs, and the preset corresponding relationship between the difference interval and the air conditioner adjustment strategy. It can be understood that the way to obtain the current air conditioner adjustment strategy can be to divide the difference between the current supercooling degree prediction value and the current supercooling degree target value into multiple difference intervals, and then to obtain the current air conditioner adjustment strategy according to the preset corresponding relationship between the difference interval and the air conditioner adjustment strategy. The number of difference intervals for dividing the difference between the current supercooling degree prediction value and the current supercooling degree target value is not fixed, and can be selected according to the parameters of the air conditioning equipment and actual needs.

[0105] In an embodiment, the content of the air conditioner adjustment strategy is explained by taking adjusting the speed of the indoor fan and the operating frequency of the compressor as an example. The optional air conditioner adjustment strategy in S800 includes: controlling the compressor of the air conditioner to perform frequency reduction operation and controlling the indoor fan of the air conditioner to perform speed reduction operation, controlling the compressor of the air conditioner to perform current frequency maintenance operation and controlling the indoor fan of the air conditioner to perform speed reduction operation, controlling the compressor of the air conditioner to perform current frequency maintenance operation and controlling the indoor fan of the air conditioner to maintain the current speed operation, controlling the compressor of the air conditioner to perform current frequency maintenance operation and controlling the indoor fan of the air conditioner to perform speed increase operation, and controlling the compressor of the air conditioner to perform frequency increase operation and controlling the indoor fan of the air conditioner to perform speed increase operation.

[0106] It can be understood that in the case where the supercooling degree prediction value of the refrigerant at the condenser outlet is higher than the supercooling degree prediction value, the adjustment strategy of controlling the compressor of the air conditioner to perform frequency reduction operation and controlling the indoor fan of the air conditioner to perform speed reduction operation can be adopted. In the case where the supercooling degree prediction value of the refrigerant at the condenser outlet is equivalent to the supercooling degree prediction value, the adjustment strategy of controlling the compressor of the air conditioner to perform frequency reduction operation and controlling the indoor fan of the air conditioner to perform speed reduction operation can be adopted. In the case where the supercooling degree prediction value of the refrigerant at the condenser outlet is lower than the supercooling degree prediction value, the adjustment strategy of controlling the compressor of the air conditioner to perform frequency increase operation and controlling the indoor fan of the air conditioner to perform speed increase operation can be adopted.

[0107] Taking the number of set difference intervals as 7 as an example, in one embodiment, S800 comprises: when the difference between the current supercooling degree prediction value and the current supercooling degree target value belongs to the first difference interval, controlling the compressor of the air conditioner to perform frequency reduction operation at a first frequency reduction rate and the inner fan of the air conditioner to perform speed reduction operation at a first speed reduction rate.

[0108] In one embodiment, S800 comprises: when the difference between the current supercooling degree prediction value and the current supercooling degree target value belongs to the second difference interval, controlling the compressor of the air conditioner to perform frequency reduction operation at a second frequency reduction rate and the inner fan of the air conditioner to perform speed reduction operation at a second speed reduction rate.

[0109] In one embodiment, S800 comprises: when the difference between the current supercooling degree prediction value and the current supercooling degree target value belongs to the third difference interval, controlling the compressor of the air conditioner to maintain current frequency operation and the inner fan of the air conditioner to perform speed reduction operation at a third speed reduction rate.

[0110] In one embodiment, S800 comprises: when the difference between the current supercooling degree prediction value and the current supercooling degree target value belongs to the fourth difference interval, controlling the compressor of the air conditioner to maintain current frequency operation and the inner fan of the air conditioner to maintain current speed operation.

[0111] In one embodiment, S800 comprises: when the difference between the current supercooling degree prediction value and the current supercooling degree target value belongs to the fifth difference interval, controlling the compressor of the air conditioner to maintain current frequency operation and the inner fan of the air conditioner to perform speed increase operation at a first speed increase rate.

[0112] In one embodiment, S800 comprises: when the difference between the current supercooling degree prediction value and the current supercooling degree target value belongs to the sixth difference interval, controlling the compressor of the air conditioner to perform frequency increase operation at a first frequency increase rate and the inner fan of the air conditioner to perform speed increase operation at a second speed increase rate.

[0113] In one embodiment, S800 comprises: when the difference between the current supercooling degree prediction value and the current supercooling degree target value belongs to the seventh difference interval, controlling the compressor of the air conditioner to perform frequency increase operation at a second frequency increase rate and the inner fan of the air conditioner to perform speed increase operation at a third speed increase rate.

[0114] In the above embodiment, the upper limit value of the first difference interval is greater than or equal to the lower limit value of the second difference interval, the upper limit value of the second difference interval is greater than or equal to the lower limit value of the third difference interval, the upper limit value of the third difference interval is greater than or equal to the lower limit value of the fourth difference interval, the upper limit value of the fourth difference interval is greater than or equal to the lower limit value of the fifth difference interval, the upper limit value of the fifth difference interval is greater than or equal to the lower limit value of the sixth difference interval, and the upper limit value of the sixth difference interval is greater than or equal to the lower limit value of the seventh difference interval; the first frequency reduction rate is greater than the second frequency reduction rate, the first frequency increase rate is less than the second frequency increase rate, the first speed reduction rate is greater than the second speed reduction rate, the second speed reduction rate is greater than the third speed reduction rate, the first speed increase rate is less than the second speed increase rate, and the second speed increase rate is less than the third speed increase rate.

[0115] Specifically, the specific threshold of the above difference interval, and the values of the frequency increase rate, the frequency reduction rate, the speed increase rate and the speed reduction rate are not unique, and can be selected according to the parameters of the actual air conditioning equipment. The selected values of the present embodiment are illustrated as follows:

[0116] In one embodiment, S800 includes: when the difference between the current supercooling degree prediction value T 过冷度 and the current supercooling degree target value T 过冷度目标值 belongs to the first difference interval (5~+∞℃), the compressor of the air conditioner is controlled to execute frequency reduction operation at 5Hz / 5min, and the inner fan of the air conditioner is controlled to execute speed reduction operation at 50rpm / 5min.

[0117] It can be understood that when T 过冷度 -T 过冷度目标值 >5℃, it is determined that the supercooling degree of the refrigerant at the outlet of the condenser is too high, at which time the compressor of the air conditioner is controlled to execute frequency reduction control strategy, and in the present embodiment, the frequency reduction operation is executed at a frequency reduction rate of 5Hz / 5min, and the inner fan of the air conditioner is controlled to execute speed reduction control strategy, and in the present embodiment, the speed reduction operation is executed at a speed reduction rate of 50rpm / 5min.

[0118] In one embodiment, S800 includes: when the difference between the current supercooling degree prediction value T and the current supercooling degree target value T

[0119] belongs to the second difference interval (3~5℃], the compressor of the air conditioner is controlled to execute frequency reduction operation at 3Hz / 5min, and the inner fan of the air conditioner is controlled to execute speed reduction operation at 25rpm / 5min.

[0119] It can be understood that when 3℃<T 过冷度 -T 过冷度目标值When T≤ 5℃, it is determined that the supercooling degree of the refrigerant at the outlet of the condenser is too high, at which time the compressor of the air conditioner is controlled to execute a frequency reduction control strategy, and in this embodiment, the compressor is executed at a frequency reduction rate of 3 Hz / 5 min, and the inner fan of the air conditioner is controlled to execute a speed reduction control strategy, and in this embodiment, the inner fan is executed at a speed reduction rate of 25 rpm / 5 min.

[0120] In one embodiment, S800 includes: when the difference between the current supercooling degree prediction value and the current supercooling degree target value belongs to the third difference value interval (1~3℃], the compressor of the air conditioner is controlled to maintain the current frequency operation, and the inner fan of the air conditioner is executed at a speed reduction rate of 10 rpm / 5 min.

[0121] It can be understood that when 1℃ 过冷度 -T 过冷度目标值 When T≤ 3℃, it is determined that the supercooling degree of the refrigerant at the outlet of the condenser is slightly high, at which time the compressor of the air conditioner is controlled to execute a current frequency maintenance control strategy, and the inner fan of the air conditioner is controlled to execute a speed reduction control strategy, and in this embodiment, the inner fan is executed at a speed reduction rate of 10 rpm / 5 min.

[0122] In one embodiment, S800 includes: when the difference between the current supercooling degree prediction value and the current supercooling degree target value belongs to the fourth difference value interval [-1~1℃], the compressor of the air conditioner is controlled to maintain the current frequency operation, and the inner fan of the air conditioner is maintained at the current speed operation.

[0123] It can be understood that when -1℃≤T 过冷度 -T 过冷度目标值 When T≤ 1℃, it is determined that the supercooling degree of the refrigerant at the outlet of the condenser is moderate, at which time the compressor of the air conditioner is controlled to execute a current frequency maintenance control strategy, and the inner fan of the air conditioner is controlled to execute a current speed maintenance control strategy.

[0124] In one embodiment, S800 includes: when the difference between the current supercooling degree prediction value and the current supercooling degree target value belongs to the fifth difference value interval [-3~-1℃), the compressor of the air conditioner is controlled to maintain the current frequency operation, and the inner fan of the air conditioner is executed at a speed increase rate of 10 rpm / 5 min.

[0125] It can be understood that when -3℃≤T 过冷度 -T 过冷度目标值 When T<-1℃, it is determined that the supercooling degree of the refrigerant at the outlet of the condenser is slightly low, at which time the compressor of the air conditioner is controlled to execute a current frequency maintenance control strategy, and the inner fan of the air conditioner is controlled to execute a speed increase control strategy, and in this embodiment, the inner fan is executed at a speed increase rate of 10 rpm / 5 min.

[0126] In one embodiment, S800 includes: when the difference value interval to which the difference between the current supercooling degree prediction value and the current supercooling degree target value belongs is the sixth difference value interval [-5℃, -3℃), the compressor of the air conditioner is controlled to perform frequency increase operation at 3 Hz / 5 min, and the inner fan of the air conditioner is controlled to perform speed increase operation at 25 rpm / 5 min.

[0127] It can be understood that, when -5℃≤T 过冷度 -T 过冷度目标值 When T<-3℃, it is determined that the supercooling degree of the refrigerant at the outlet of the condenser is low, at this time, the compressor of the air conditioner is controlled to perform frequency increase control strategy, in this embodiment, frequency increase operation is performed at a frequency increase rate of 3 Hz / 5 min, and the inner fan of the air conditioner is controlled to perform speed increase control strategy, in this embodiment, speed increase operation is performed at a speed increase rate of 25 rpm / 5 min.

[0128] In one embodiment, S800 includes: when the difference value interval to which the difference between the current supercooling degree prediction value and the current supercooling degree target value belongs is the seventh difference value interval (-∞, -5℃), the compressor of the air conditioner is controlled to perform frequency increase operation at 5 Hz / 5 min, and the inner fan of the air conditioner is controlled to perform speed increase operation at 50 rpm / 5 min.

[0129] It can be understood that, when T 过冷度 -T 过冷度目标值 When T<-5℃, it is determined that the supercooling degree of the refrigerant at the outlet of the condenser is too low, at this time, the compressor of the air conditioner is controlled to perform frequency increase control strategy, in this embodiment, frequency increase operation is performed at a frequency increase rate of 5 Hz / 5 min, and the inner fan of the air conditioner is controlled to perform speed increase control strategy, in this embodiment, speed increase operation is performed at a speed increase rate of 50 rpm / 5 min.

[0130] It should be understood that, although each step in the flowchart involved in each of the above embodiments is shown in sequence according to the arrow, these steps are not necessarily executed in sequence according to the arrow. Unless otherwise specified herein, the execution of these steps is not strictly limited in sequence, and these steps can be executed in other sequences. Moreover, at least part of the steps in the flowchart involved in each of the above embodiments can include multiple steps or stages, which are not necessarily executed at the same time, but can be executed at different times, and the execution sequence of these steps or stages is not necessarily sequential, but can be executed in rotation or alternation with at least part of other steps or steps or stages in other steps.

[0131] Based on the same inventive concept, the application further provides an air conditioner control device for implementing the air conditioner control method described above. The implementation scheme for solving the problem provided by the device is similar to the implementation scheme described in the above method, so the specific limitations in one or more air conditioner control device embodiments provided below can refer to the limitations of the air conditioner control method described above, which will not be repeated here.

[0132] In one embodiment, as shown in Figure 4 An air conditioner control device is provided, comprising: a parameter acquisition module 101, a supercooling degree prediction module 102, a target value acquisition module 103 and a running control module 104, wherein:

[0133] The parameter acquisition module 101 is configured to acquire the current running parameters of the air conditioner in the cooling mode and the current condenser inlet air temperature.

[0134] The supercooling degree prediction module 102 is configured to predict the supercooling degree based on the current running parameters of the air conditioner to obtain a current supercooling degree prediction value.

[0135] The target value acquisition module 103 is configured to determine a current supercooling degree target value according to the current condenser inlet air temperature.

[0136] The running control module 104 is configured to obtain a current air conditioner adjustment strategy based on the difference between the current supercooling degree prediction value and the current supercooling degree target value, and control the air conditioner to run based on the current air conditioner adjustment strategy.

[0137] In one embodiment, the current running parameters acquired in the parameter acquisition module 101 include the air conditioner running power, the compressor running frequency, the compressor suction temperature, the evaporator outlet air temperature, the condenser outlet pipe temperature and the outdoor fan speed.

[0138] In one embodiment, the supercooling degree prediction module 102 is further configured to perform weighted calculation on the air conditioner running power, the compressor running frequency, the compressor suction temperature, the evaporator outlet air temperature, the condenser outlet pipe temperature and the outdoor fan speed respectively with corresponding correction coefficients to obtain the current supercooling degree prediction value.

[0139] In one embodiment, the target value acquisition module 103 is further configured to correspondingly obtain the current supercooling degree target value according to the inlet air temperature interval to which the current condenser inlet air temperature belongs.

[0140] In one embodiment, the target value acquisition module 103 is further configured to correspondingly obtain the current supercooling degree target value according to the inlet air temperature interval to which the current condenser inlet air temperature belongs and a preset corresponding relationship between the inlet air temperature interval and the supercooling degree target value.

[0141] In an embodiment, the number of the air inlet temperature intervals is 4; the target value acquisition module 103 is further configured to, when the current condenser air inlet temperature belongs to a first air inlet temperature interval (0-25℃], correspondingly obtain a value range of the current supercooling degree target value, which includes [14-16℃].

[0142] In an embodiment, the target value acquisition module 103 is further configured to, when the current condenser air inlet temperature belongs to a second air inlet temperature interval (25-30℃], correspondingly obtain a value range of the current supercooling degree target value, which includes [15-17℃].

[0143] In an embodiment, the target value acquisition module 103 is further configured to, when the current condenser air inlet temperature belongs to a third air inlet temperature interval (30-35℃], correspondingly obtain a value range of the current supercooling degree target value, which includes [16-18℃].

[0144] In an embodiment, the target value acquisition module 103 is further configured to, when the current condenser air inlet temperature belongs to a fourth air inlet temperature interval (35-+∞℃), correspondingly obtain a value range of the current supercooling degree target value, which includes [17-19℃].

[0145] In an embodiment, the running control module 104 is further configured to, according to the difference value interval to which the difference between the current supercooling degree predicted value and the current supercooling degree target value belongs, and a preset corresponding relationship between the difference value interval and the air conditioner adjustment strategy, correspondingly obtain the current air conditioner adjustment strategy.

[0146] In an embodiment, the air conditioner adjustment strategy used in the running control module 104 includes: controlling the compressor of the air conditioner to perform frequency reduction operation and controlling the inner fan of the air conditioner to perform speed reduction operation, controlling the compressor of the air conditioner to perform current frequency maintenance operation and controlling the inner fan of the air conditioner to perform speed reduction operation, controlling the compressor of the air conditioner to perform current frequency maintenance operation and controlling the inner fan of the air conditioner to perform current speed maintenance operation, controlling the compressor of the air conditioner to perform current frequency maintenance operation and controlling the inner fan of the air conditioner to perform speed increase operation, and controlling the compressor of the air conditioner to perform frequency increase operation and controlling the inner fan of the air conditioner to perform speed increase operation.

[0147] In an embodiment, the number of the difference value intervals is 7; the running control module 104 is further configured to, when the difference between the current supercooling degree predicted value and the current supercooling degree target value belongs to a first difference value interval, control the compressor of the air conditioner to perform frequency reduction operation at a first frequency reduction rate and control the inner fan of the air conditioner to perform speed reduction operation at a first speed reduction rate.

[0148] In one embodiment, the running control module 104 is further configured to, when the difference between the current supercooling prediction value and the current supercooling target value belongs to the second difference interval, control the compressor of the air conditioner to perform the frequency reduction operation at a second frequency reduction rate and control the inner fan of the air conditioner to perform the speed reduction operation at a second speed reduction rate.

[0149] In one embodiment, the running control module 104 is further configured to, when the difference between the current supercooling prediction value and the current supercooling target value belongs to the third difference interval, control the compressor of the air conditioner to maintain the current frequency operation and control the inner fan of the air conditioner to perform the speed reduction operation at a third speed reduction rate.

[0150] In one embodiment, the running control module 104 is further configured to, when the difference between the current supercooling prediction value and the current supercooling target value belongs to the fourth difference interval, control the compressor of the air conditioner to maintain the current frequency operation and control the inner fan of the air conditioner to maintain the current speed operation.

[0151] In one embodiment, the running control module 104 is further configured to, when the difference between the current supercooling prediction value and the current supercooling target value belongs to the fifth difference interval, control the compressor of the air conditioner to maintain the current frequency operation and control the inner fan of the air conditioner to perform the speed increase operation at a first speed increase rate.

[0152] In one embodiment, the running control module 104 is further configured to, when the difference between the current supercooling prediction value and the current supercooling target value belongs to the sixth difference interval, control the compressor of the air conditioner to perform the frequency increase operation at a first frequency increase rate and control the inner fan of the air conditioner to perform the speed increase operation at a second speed increase rate.

[0153] In one embodiment, the running control module 104 is further configured to, when the difference between the current supercooling prediction value and the current supercooling target value belongs to the seventh difference interval, control the compressor of the air conditioner to perform the frequency increase operation at a second frequency increase rate and control the inner fan of the air conditioner to perform the speed increase operation at a third speed increase rate.

[0154] In one embodiment, the running control module 104 is further configured to, when the difference between the current supercooling prediction value and the current supercooling target value belongs to the second difference interval, control the compressor of the air conditioner to perform the frequency reduction operation at a second frequency reduction rate and control the inner fan of the air conditioner to perform the speed reduction operation at a second speed reduction rate.

[0155] In one embodiment, the running control module 104 is further configured to, when the difference between the current supercooling degree predicted value and the current supercooling degree target value belongs to the first difference interval (5~+∞ ℃), control the compressor of the air conditioner to perform the frequency reduction operation at 5 Hz / 5 min, and control the internal fan of the air conditioner to perform the speed reduction operation at 50 rpm / 5 min.

[0156] In one embodiment, the running control module 104 is further configured to, when the difference between the current supercooling degree predicted value and the current supercooling degree target value belongs to the second difference interval (3~5 ℃], control the compressor of the air conditioner to perform the frequency reduction operation at 3 Hz / 5 min, and control the internal fan of the air conditioner to perform the speed reduction operation at 25 rpm / 5 min.

[0157] In one embodiment, the running control module 104 is further configured to, when the difference between the current supercooling degree predicted value and the current supercooling degree target value belongs to the third difference interval (1~3 ℃], control the compressor of the air conditioner to maintain the current frequency operation, and control the internal fan of the air conditioner to perform the speed reduction operation at 10 rpm / 5 min.

[0158] In one embodiment, the running control module 104 is further configured to, when the difference between the current supercooling degree predicted value and the current supercooling degree target value belongs to the fourth difference interval [-1~1 ℃], control the compressor of the air conditioner to maintain the current frequency operation, and control the internal fan of the air conditioner to maintain the current speed operation.

[0159] In one embodiment, the running control module 104 is further configured to, when the difference between the current supercooling degree predicted value and the current supercooling degree target value belongs to the fifth difference interval [-3~-1 ℃), control the compressor of the air conditioner to maintain the current frequency operation, and control the internal fan of the air conditioner to perform the speed increase operation at 10 rpm / 5 min.

[0160] In one embodiment, the running control module 104 is further configured to, when the difference between the current supercooling degree predicted value and the current supercooling degree target value belongs to the sixth difference interval [-5~-3 ℃), control the compressor of the air conditioner to perform the frequency increase operation at 3 Hz / 5 min, and control the internal fan of the air conditioner to perform the speed increase operation at 25 rpm / 5 min.

[0161] In one embodiment, the running control module 104 is further configured to, when the difference between the current supercooling degree predicted value and the current supercooling degree target value belongs to the seventh difference interval (-∞~-5 ℃), control the compressor of the air conditioner to perform the frequency increase operation at 5 Hz / 5 min, and control the internal fan of the air conditioner to perform the speed increase operation at 50 rpm / 5 min.

[0162] The modules in the air conditioner control device can be implemented by software, hardware, or a combination thereof. The modules can be embedded in or independent of a processor in a computer device in hardware form, or stored in a memory in the computer device in software form, so that the processor can call and execute the operations corresponding to the modules.

[0163] In one embodiment, a computer device, which can be a server, has an internal structure as shown in Figure 5 The computer device includes a processor, a memory, an input / output interface, and a communication interface. The processor, the memory, and the input / output interface are connected through a system bus, and the communication interface is connected to the system bus through the input / output interface. The processor of the computer device is configured to provide computing and control capabilities. The memory of the computer device includes a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system, a computer program, and a database. The internal memory provides an environment for running the operating system and the computer program in the non-volatile storage medium. The database of the computer device is configured to store current running parameters, a current condenser inlet air temperature, and a current supercooling degree prediction value. The input / output interface of the computer device is configured to exchange information between the processor and external devices. The communication interface of the computer device is configured to communicate with terminals outside through a network connection. The computer program is executed by the processor to implement an air conditioner control method.

[0164] Those skilled in the art can understand that Figure 5 The structure shown in the above embodiment is only a block diagram of part of the structure related to the scheme of the present application, and does not limit the computer device to which the scheme of the present application is applied. The specific computer device can include more or fewer components than those shown in the figure, or combine certain components, or have a different arrangement of components.

[0165] In one embodiment, a computer device is provided, which includes a memory and a processor. The memory stores a computer program, and the processor executes the computer program to implement the steps of the air conditioner control method.

[0166] In one embodiment, a computer readable storage medium is provided, which stores a computer program. The computer program is executed by a processor to implement the steps of the air conditioner control method.

[0167] In one embodiment, a computer program product is provided, which includes a computer program. The computer program is executed by a processor to implement the steps of the air conditioner control method.

[0168] In one embodiment, as Figure 1As shown, an air conditioning device is provided, including a control module 110 and a data acquisition module 120. The data acquisition module 120 is connected to the control module 110. The data acquisition module 120 is used to acquire the current operating parameters and the current condenser inlet air temperature of the air conditioner in cooling mode. The control module 110 is used to implement air conditioning control based on the current operating parameters and the current condenser inlet air temperature according to the above-mentioned air conditioning control method.

[0169] Specifically, after receiving a start-up command, the air conditioning unit will control the indoor fan, evaporator, compressor, and condenser to start working, thus achieving cooling or heating functions. The current operating parameters of the air conditioner can be understood as the operating parameters of each hardware component, including but not limited to air conditioner operating power, compressor operating frequency, compressor suction temperature, evaporator outlet air temperature, condenser outlet pipe temperature, and outdoor fan speed. After these operating parameters are collected, they can be aggregated to the data acquisition module 120. The data acquisition module 120 can perform preprocessing of the data information, converting it into numerical values, to obtain numerical information that the control module 110 can recognize, before transmitting it to the control module 110.

[0170] Furthermore, after receiving the current operating parameters summarized and preprocessed by the data acquisition module 120, the control module 110 can predict the subcooling degree based on the received data to obtain the current subcooling degree prediction value. The control module 110 also determines the current subcooling degree target value based on the current condenser inlet air temperature, and finally obtains the current air conditioning adjustment strategy based on the difference between the current subcooling degree prediction value and the current subcooling degree target value, and controls the air conditioning operation based on the current air conditioning adjustment strategy.

[0171] In this embodiment, the subcooling at the condenser outlet can be predicted using the existing system parameters of the portable air source heat pump air conditioner without modifying its structure or adding additional hardware, thereby improving the adaptive adjustment capability of the air conditioning equipment and optimizing the control strategy of the portable air source heat pump air conditioner.

[0172] It is understood that the solution provided by this air conditioning device is similar to the solution described in the above-mentioned air conditioning control method. Therefore, the specific limitations in the embodiment of this air conditioning device can be found in the limitations of the air conditioning control method above, and will not be repeated here.

[0173] In one embodiment, such as Figure 6 and Figure 7 As shown, the air conditioning equipment also includes a refrigeration module, and the control module 110 includes a central control module, a condenser adaptive module, a subcooling prediction module, an actuator module, and a timing module.

[0174] Specifically, the refrigeration module is a module for storing operation code of a refrigeration mode of the air conditioning device. When the air conditioning device receives a control instruction of operating the refrigeration mode, the central control module will call the execution code of the refrigeration module and run the corresponding code to control the hardware devices of the air conditioner to execute the relevant instructions of the refrigeration mode according to the operation code. The central control module is a core control board in the air conditioning device, which is responsible for receiving data information transmitted by the data acquisition module (including various drive modules such as compressor drive module, fan drive module, power supply drive module and various temperature sensors), calling the timing module, completing the receiving, processing and transmission of the data information, then sending the processed data to the condenser adaptive control module, and finally calling the actuator module according to the calculation result of the supercooling degree prediction module to complete the execution processing of the air conditioning adjustment strategy obtained according to the above air conditioning control method in the refrigeration mode.

[0175] The timing module is a functional module for completing time counting under the control of the central control module. The data acquisition module is a board responsible for data acquisition, identification, processing, storage and transmission under the control of the central control module. The condenser adaptive control module is a module that, under the control of the central control module, calculates the refrigerant supercooling degree at the outlet of the air conditioner condenser by calling its internal supercooling degree prediction module, and according to the calculation result, selects an air conditioning adjustment strategy, feeds back the air conditioning adjustment strategy to the central control module, and sends the instructions corresponding to the air conditioning adjustment strategy to the actuator module to complete the adaptive adjustment of the air conditioner. The supercooling degree prediction module stores a supercooling degree prediction model at the outlet of the condenser. The supercooling degree module receives the relevant data (air conditioner operating power, compressor operating frequency, compressor suction temperature, evaporator outlet temperature, condenser outlet pipe temperature and outdoor fan speed) collected and preprocessed by the data acquisition module from the central control module, and substitutes the data into the mathematical analysis formula of the supercooling degree prediction model to calculate the predicted value of the refrigerant supercooling degree at the outlet of the condenser. The actuator module is an execution component that can complete the adaptive adjustment of the air conditioner in the refrigeration mode under the control of the central control module. In the embodiments of the application, the actuator includes two components: a compressor and an outdoor fan.

[0176] Further, from the time when the refrigeration mode is started, the central control module first activates and starts the timing module, and when the timing module measures that the cumulative running time of the air conditioner from the start of the refrigeration mode reaches At1, the data acquisition module acquires the first group of running parameters of the air conditioner. The first group of running parameters of the air conditioner includes: the running power of the air conditioner, the running frequency of the compressor, the suction temperature of the compressor, the outlet air temperature of the evaporator, the outlet pipe temperature of the condenser, and the rotating speed of the outdoor fan (in particular, at this time the data acquisition module will acquire the first group of condenser inlet air temperature parameters and store them in the condenser adaptive control module), the data acquisition module acquires and identifies the first group of running parameters, simultaneously performs numerical value processing and storage on each parameter, and then transmits the group of data to the central control module. According to the laboratory measured data, the value range of At1 is 25 min to 45 min, and in this embodiment, the preferred value of At1 is 30 min.

[0177] After the central control module receives the first group of parameters of the running power of the air conditioner, the running frequency of the compressor, the suction temperature of the compressor, the outlet air temperature of the evaporator, the outlet pipe temperature of the condenser, and the rotating speed of the outdoor fan, the central control module transmits the group of parameters to the condenser adaptive control module. The condenser adaptive control module further transmits the corresponding first group of running parameters to the supercooling degree prediction mathematical model embedded in the condenser adaptive control module. The supercooling degree prediction module calculates and obtains the first value according to the first group of running parameters, and then feeds back and stores the first value in the storage unit of the condenser adaptive control module.

[0178] Further, from the time when the condenser adaptive control algorithm is started, when the cumulative time of the air conditioner executing the condenser adaptive control algorithm measured by the timing module reaches and meets (At1+At0), the data acquisition module acquires the second group of running parameters, and obtains the second value according to the same data transmission processing process, and then feeds back and stores the second value in the storage unit of the condenser adaptive control module. According to the above rules, the acquisition control method of the data acquisition module on the running parameters is completed under the coordination of the timing module, and the control algorithm of the data acquisition module on the acquisition time node T n of the n-th group of running parameters is as follows:

[0179] T n = At1+ (n-1) * At0

[0180] Wherein, T n is the time node at which the data acquisition module acquires the n-th group of running parameters since the condenser adaptive algorithm is started. Further, the condenser adaptive control module calculates and obtains the n-th value according to the n-th group of running parameters, and then feeds back and stores the n-th The values are fed back and stored in the memory unit of the condenser adaptive control module.

[0181] In the condenser adaptive control module, from the 2nd value obtained , the following process is started to perform adaptive control on the air conditioning equipment until the nth value or the air conditioner is shut down.

[0182] Specifically, in the condenser adaptive control module, a plurality of target T 过冷度目标值 values are set, in this embodiment, the value range of T 过冷度目标值 is:

[0183] (1) when T 冷凝器进风温度 ≤ 25℃, the value of T 过冷度目标值 is 15℃±1℃;

[0184] (2) when 25℃ < T 冷凝器进风温度 ≤ 30℃, the value of T 过冷度目标值 is 16℃±1℃;

[0185] (3) when 30℃ < T 冷凝器进风温度 ≤ 35℃, the value of T 过冷度目标值 is 17℃±1℃;

[0186] (4) when T 冷凝器进风温度 > 35℃, the value of T 过冷度目标值 is 18℃±1℃.

[0187] Further, the condenser adaptive control module obtains the comparison rule of the air conditioning adjustment strategy as follows:

[0188] (1) when T 过冷度 -T 过冷度目标值 > 5℃, at this time the condenser adaptive control module considers that the supercooling degree of the refrigerant at the outlet of the condenser is too high, in this case, the condenser adaptive control module feeds back to the central control module to execute air conditioning adjustment strategy 1;

[0189] (2) when 3℃ < T 过冷度 -T 过冷度目标值 ≤ 5℃, at this time the condenser adaptive control module considers that the supercooling degree of the refrigerant at the outlet of the condenser is slightly high, in this case, the condenser adaptive control module feeds back to the central control module to execute air conditioning adjustment strategy 2;

[0190] (3) when 1℃ < T 过冷度 -T 过冷度目标值 ≤ 3℃, at this time the condenser adaptive control module considers that the supercooling degree of the refrigerant at the outlet of the condenser is slightly high, in this case, the condenser adaptive control module feeds back to the central control module to execute air conditioning adjustment strategy 3;

[0191] (4) when -1℃≤T 过冷度 -T 过冷度目标值 ≤1℃, at this time, the condenser adaptive control module considers that the refrigerant supercooling degree at the condenser outlet is moderate, in which case the condenser adaptive control module feeds back to the central control module to execute air conditioning adjustment strategy 4;

[0192] (5) when -3℃≤T 过冷度 -T 过冷度目标值 <-1℃, at this time, the condenser adaptive control module considers that the refrigerant supercooling degree at the condenser outlet is slightly low, in which case the condenser adaptive control module feeds back to the central control module to execute air conditioning adjustment strategy 5;

[0193] (6) when -5℃≤T 过冷度 -T 过冷度目标值 <-3℃, at this time, the condenser adaptive control module considers that the refrigerant supercooling degree at the condenser outlet is low, in which case the condenser adaptive control module feeds back to the central control module to execute air conditioning adjustment strategy 6;

[0194] (7) when T 过冷度 -T 过冷度目标值 <-5℃, at this time, the condenser adaptive control module considers that the refrigerant supercooling degree at the condenser outlet is too low, in which case the condenser adaptive control module feeds back to the central control module to execute air conditioning adjustment strategy 7.

[0195] Further, after receiving the air conditioning adjustment strategy feedback from the condenser adaptive control module, the central control module sends instructions to the actuator module based on the air conditioning adjustment strategy to mobilize the actuator module to execute the corresponding adaptive adjustment mechanism. Wherein:

[0196] (1) when the central control module receives air conditioning adjustment strategy 1 feedback from the condenser adaptive control module, then mobilize the compressor and the outdoor fan in the actuator module to execute adaptive adjustment instruction 1. Specifically, adaptive adjustment instruction 1: 1) the compressor operating speed executes the frequency reduction control strategy, and the frequency reduction control strategy preferred value is a frequency reduction rate of 5Hz / 5min; 2) the inner fan speed executes the speed reduction control strategy, and the speed reduction control strategy preferred value is a speed reduction rate of 50rpm / 5min;

[0197] (2) when the central control module receives air conditioning adjustment strategy 2 feedback from the condenser adaptive control module, then mobilize the compressor and the outdoor fan in the actuator module to execute adaptive adjustment instruction 2. Specifically, adaptive adjustment instruction 2: 1) the compressor operating speed executes the frequency reduction control strategy, and the frequency reduction control strategy preferred value is a frequency reduction rate of 3Hz / 5min; 2) the inner fan speed executes the speed reduction control strategy, and the speed reduction control strategy preferred value is a speed reduction rate of 25rpm / 5min;

[0198] (3) When the central control module receives the air conditioner adjustment strategy 3 feedback from the condenser adaptive control module, then mobilize the compressor and the outer fan in the actuator module to execute the adaptive adjustment instruction 3. Specifically, the adaptive adjustment instruction 3: 1) the compressor operating speed executes the current frequency control strategy; 2) the inner fan speed executes the speed down control strategy, and the speed down control strategy is preferably 10 rpm / 5 min;

[0199] (4) When the central control module receives the air conditioner adjustment strategy 4 feedback from the condenser adaptive control module, then mobilize the compressor and the outer fan in the actuator module to execute the adaptive adjustment instruction 4. Specifically, the adaptive adjustment instruction 4: 1) the compressor operating speed executes the current frequency control strategy; 2) the inner fan speed executes the current speed control strategy;

[0200] (5) When the central control module receives the air conditioner adjustment strategy 5 feedback from the condenser adaptive control module, then mobilize the compressor and the outer fan in the actuator module to execute the adaptive adjustment instruction 5. Specifically, the adaptive adjustment instruction 5: 1) the compressor operating speed executes the current frequency control strategy; 2) the inner fan speed executes the speed up control strategy, and the speed down control strategy is preferably 10 rpm / 5 min;

[0201] (6) When the central control module receives the air conditioner adjustment strategy 6 feedback from the condenser adaptive control module, then mobilize the compressor and the outer fan in the actuator module to execute the adaptive adjustment instruction 6. Specifically, the adaptive adjustment instruction 6: 1) the compressor operating speed executes the frequency up control strategy, and the frequency down control strategy is preferably 3 Hz / 5 min; 2) the inner fan speed executes the speed up control strategy, and the speed down control strategy is preferably 25 rpm / 5 min;

[0202] (7) When the central control module receives the air conditioner adjustment strategy 7 feedback from the condenser adaptive control module, then mobilize the compressor and the outer fan in the actuator module to execute the adaptive adjustment instruction 7. Specifically, the adaptive adjustment instruction 7: 1) the compressor operating speed executes the frequency up control strategy, and the frequency down control strategy is preferably 5 Hz / 5 min; 2) the inner fan speed executes the speed up control strategy, and the speed down control strategy is preferably 50 rpm / 5 min.

[0203] In this embodiment, the supercooling degree at the condenser outlet can be predicted using the existing system parameters of the portable air source heat pump air conditioner, without the need to add additional hardware devices, without increasing the manufacturing cost, with better economy, improving the adaptive adjustment capability of the condenser, optimizing the control strategy of the portable air source heat pump air conditioner, and enhancing the product competitiveness.

[0204] It should be noted that the user information (including but not limited to user equipment information, user personal information, etc.) and data (including but not limited to data for analysis, stored data, displayed data, etc.) involved in the present application are all information and data authorized by the user or authorized by all parties, and the collection, use and processing of related data need to comply with relevant laws, regulations and standards of the country and region.

[0205] A person of ordinary skill in the art can understand that all or part of the processes in the above-mentioned embodiment methods can be completed by instructing related hardware through a computer program. The computer program can be stored in a non-volatile computer readable storage medium, and when the computer program is executed, the processes of the above-mentioned embodiments of each method can be included. In the embodiments provided in the present application, any reference to memory, database or other medium can include at least one of non-volatile and volatile memory. Non-volatile memory can include read-only memory (Read-Only Memory, ROM), magnetic tape, floppy disk, flash memory, optical storage, high-density embedded non-volatile memory, resistive memory (ReRAM), magnetic variable memory (Magnetoresistive Random Access Memory, MRAM), ferroelectric memory (Ferroelectric Random Access Memory, FRAM), phase change memory (Phase Change Memory, PCM), graphene memory, etc. Volatile memory can include random access memory (Random Access Memory, RAM) or external cache memory, etc. As an illustration but not limitation, RAM can be in various forms, such as static random access memory (Static Random Access Memory, SRAM) or dynamic random access memory (Dynamic Random Access Memory, DRAM), etc. The database involved in the embodiments provided in the present application can include at least one of a relational database and a non-relational database. The non-relational database can include a distributed database based on a block chain, etc., without being limited thereto. The processor involved in the embodiments provided in the present application can be a general-purpose processor, a central processing unit, a graphics processing unit, a digital signal processor, a programmable logic device, a data processing logic device based on quantum computing, etc., without being limited thereto.

[0206] The technical features of the above embodiments can be combined in any way. In order to make the description simple, not all possible combinations of the technical features in the above embodiments are described, but as long as the combination of the technical features does not exist contradictory, it should be considered as the scope of the present application.

[0207] The above-described embodiments are merely illustrative of several embodiments of the present application, which are described in more detail and in a specific manner, but should not be construed as limiting the scope of the patent of the present application. It should be noted that, for those of ordinary skill in the art, several modifications and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the appended claims.

Claims

1. An air conditioner control method characterized by comprising: The method comprises: obtaining current operating parameters of the air conditioner in the cooling mode and a current condenser inlet air temperature; the current operating parameters include air conditioner operating power, compressor operating frequency, compressor suction temperature, evaporator outlet air temperature, condenser outlet pipe temperature, and outdoor fan speed; inputting the air conditioner operating power, the compressor operating frequency, the compressor suction temperature, the evaporator outlet air temperature, the condenser outlet pipe temperature, and the outdoor fan speed into a supercooling degree prediction mathematical model to obtain a current supercooling degree prediction value; the supercooling degree prediction mathematical model is determined according to correction coefficients corresponding to each operating parameter and a constant term; determining a current supercooling degree target value according to the current condenser inlet air temperature; obtaining a current air conditioner adjustment strategy based on a difference between the current supercooling degree prediction value and the current supercooling degree target value, and controlling the air conditioner to operate based on the current air conditioner adjustment strategy.

2. The method of claim 1, wherein, The correction coefficients corresponding to each operating parameter are determined according to maximum refrigerating capacity, maximum air supply, compressor parameters, and air duct layout of the air conditioning equipment.

3. The method of claim 1, wherein, The determination of the current supercooling degree target value according to the current condenser inlet air temperature comprises: correspondingly obtaining the current supercooling degree target value according to an inlet air temperature interval to which the current condenser inlet air temperature belongs.

4. The method of claim 3, wherein, The corresponding obtaining of the current supercooling degree target value according to the inlet air temperature interval to which the current condenser inlet air temperature belongs comprises: correspondingly obtaining the current supercooling degree target value according to the inlet air temperature interval to which the current condenser inlet air temperature belongs and a preset corresponding relationship between inlet air temperature intervals and supercooling degree target values.

5. The method of claim 3, wherein, The number of the inlet air temperature intervals is four, and the corresponding obtaining of the current supercooling degree target value according to the inlet air temperature interval to which the current condenser inlet air temperature belongs comprises at least one of the following: when the inlet air temperature interval to which the current condenser inlet air temperature belongs is a first inlet air temperature interval (0~25℃], a value range of the current supercooling degree target value obtained correspondingly includes [14~16℃]; when the inlet air temperature interval to which the current condenser inlet air temperature belongs is a second inlet air temperature interval (25~30℃], a value range of the current supercooling degree target value obtained correspondingly includes [15~17℃]; when the inlet air temperature interval to which the current condenser inlet air temperature belongs is a third inlet air temperature interval (30~35℃], a value range of the current supercooling degree target value obtained correspondingly includes [16~18℃]; when the inlet air temperature interval to which the current condenser inlet air temperature belongs is a fourth inlet air temperature interval (35~+∞℃), a value range of the current supercooling degree target value obtained correspondingly includes [17~19℃].

6. The method according to any one of claims 1 to 5, characterized in that, The obtaining of the current air conditioner adjustment strategy based on the difference between the current supercooling degree prediction value and the current supercooling degree target value comprises: correspondingly obtaining the current air conditioner adjustment strategy according to a difference interval to which the difference between the current supercooling degree prediction value and the current supercooling degree target value belongs and a preset corresponding relationship between difference intervals and air conditioner adjustment strategies.

7. The method of claim 6, wherein, The air conditioning adjustment strategy comprises: controlling the compressor of the air conditioner to perform a frequency reduction operation at a first frequency reduction rate and controlling the inner fan of the air conditioner to perform a speed reduction operation at a first speed reduction rate; controlling the compressor of the air conditioner to perform a frequency reduction operation at a second frequency reduction rate and controlling the inner fan of the air conditioner to perform a speed reduction operation at a second speed reduction rate; controlling the compressor of the air conditioner to perform a frequency maintenance operation at a current frequency and controlling the inner fan of the air conditioner to perform a speed reduction operation at a third speed reduction rate; controlling the compressor of the air conditioner to perform a frequency maintenance operation at a current frequency and controlling the inner fan of the air conditioner to perform a speed maintenance operation at a current speed; controlling the compressor of the air conditioner to perform a frequency maintenance operation at a current frequency and controlling the inner fan of the air conditioner to perform a speed increase operation at a first speed increase rate; and controlling the compressor of the air conditioner to perform a frequency increase operation at a first frequency increase rate and controlling the inner fan of the air conditioner to perform a speed increase operation at a second speed increase rate.

8. The method of claim 7, wherein, The number of the difference value intervals is 7; the current air conditioning adjustment strategy is obtained based on the difference between the current supercooling degree prediction value and the current supercooling degree target value, and the air conditioner is controlled to operate based on the current air conditioning adjustment strategy, comprising at least one of the following: When the difference between the current supercooling degree prediction value and the current supercooling degree target value belongs to a first difference value interval, the compressor of the air conditioner is controlled to perform a frequency reduction operation at a first frequency reduction rate, and the inner fan of the air conditioner is controlled to perform a speed reduction operation at a first speed reduction rate; When the difference between the current supercooling degree prediction value and the current supercooling degree target value belongs to a second difference value interval, the compressor of the air conditioner is controlled to perform a frequency reduction operation at a second frequency reduction rate, and the inner fan of the air conditioner is controlled to perform a speed reduction operation at a second speed reduction rate; When the difference between the current supercooling degree prediction value and the current supercooling degree target value belongs to a third difference value interval, the compressor of the air conditioner is controlled to perform a frequency maintenance operation at a current frequency, and the inner fan of the air conditioner is controlled to perform a speed reduction operation at a third speed reduction rate; When the difference between the current supercooling degree prediction value and the current supercooling degree target value belongs to a fourth difference value interval, the compressor of the air conditioner is controlled to perform a frequency maintenance operation at a current frequency, and the inner fan of the air conditioner is controlled to perform a speed maintenance operation at a current speed; When the difference between the current supercooling degree prediction value and the current supercooling degree target value belongs to a fifth difference value interval, the compressor of the air conditioner is controlled to perform a frequency maintenance operation at a current frequency, and the inner fan of the air conditioner is controlled to perform a speed increase operation at a first speed increase rate; When the difference between the current supercooling degree prediction value and the current supercooling degree target value belongs to a sixth difference value interval, the compressor of the air conditioner is controlled to perform a frequency increase operation at a first frequency increase rate, and the inner fan of the air conditioner is controlled to perform a speed increase operation at a second speed increase rate; When the difference between the current supercooling degree prediction value and the current supercooling degree target value belongs to a seventh difference value interval, the compressor of the air conditioner is controlled to perform a frequency increase operation at a second frequency increase rate, and the inner fan of the air conditioner is controlled to perform a speed increase operation at a third speed increase rate; The upper limit value of the first difference interval is greater than or equal to the lower limit value of the second difference interval, the upper limit value of the second difference interval is greater than or equal to the lower limit value of the third difference interval, the upper limit value of the third difference interval is greater than or equal to the lower limit value of the fourth difference interval, the upper limit value of the fourth difference interval is greater than or equal to the lower limit value of the fifth difference interval, the upper limit value of the fifth difference interval is greater than or equal to the lower limit value of the sixth difference interval, and the upper limit value of the sixth difference interval is greater than or equal to the lower limit value of the seventh difference interval; the first frequency reduction rate is greater than the second frequency reduction rate, the first frequency increase rate is less than the second frequency increase rate, the first speed reduction rate is greater than the second speed reduction rate, the second speed reduction rate is greater than the third speed reduction rate, the first speed increase rate is less than the second speed increase rate, and the second speed increase rate is less than the third speed increase rate.

9. The method of claim 8, wherein, The current air conditioning adjustment strategy is obtained based on the difference between the current supercooling degree prediction value and the current supercooling degree target value, and the air conditioner is controlled to operate based on the current air conditioning adjustment strategy, including at least one of the following: When the difference between the current supercooling degree prediction value and the current supercooling degree target value belongs to the first difference interval (5~+∞℃), the compressor of the air conditioner is controlled to perform frequency reduction operation at 5Hz / 5min, and the inner fan of the air conditioner is controlled to perform speed reduction operation at 50rpm / 5min; When the difference between the current supercooling degree prediction value and the current supercooling degree target value belongs to the second difference interval (3~5℃], the compressor of the air conditioner is controlled to perform frequency reduction operation at 3Hz / 5min, and the inner fan of the air conditioner is controlled to perform speed reduction operation at 25rpm / 5min; When the difference between the current supercooling degree prediction value and the current supercooling degree target value belongs to the third difference interval (1~3℃], the compressor of the air conditioner is controlled to maintain current frequency operation, and the inner fan of the air conditioner is controlled to perform speed reduction operation at 10rpm / 5min; When the difference between the current supercooling degree prediction value and the current supercooling degree target value belongs to the fourth difference interval [-1~1℃], the compressor of the air conditioner is controlled to maintain current frequency operation, and the inner fan of the air conditioner is controlled to maintain current speed operation; When the difference between the current supercooling degree prediction value and the current supercooling degree target value belongs to the fifth difference interval [-3~-1℃), the compressor of the air conditioner is controlled to maintain current frequency operation, and the inner fan of the air conditioner is controlled to perform speed increase operation at 10rpm / 5min; When the difference between the current supercooling degree prediction value and the current supercooling degree target value belongs to the sixth difference interval [-5~-3℃), the compressor of the air conditioner is controlled to perform frequency increase operation at 3Hz / 5min, and the inner fan of the air conditioner is controlled to perform speed increase operation at 25rpm / 5min; When the difference between the current supercooling prediction value and the current supercooling target value belongs to a seventh difference interval (-∞~ -5℃), the compressor of the air conditioner is controlled to perform frequency increase operation at 5 Hz / 5 min, and the inner fan of the air conditioner is controlled to perform speed increase operation at 50 rpm / 5 min.

10. An air conditioner control device characterized by comprising: The device comprises: The parameter acquisition module is configured to acquire a current operating parameter of the air conditioner in the cooling mode and a current condenser inlet air temperature; the current operating parameter comprises an operating power of the air conditioner, a compressor operating frequency, a compressor suction temperature, an evaporator outlet air temperature, a condenser outlet pipe temperature, and an outer fan rotating speed; The supercooling prediction module is configured to input the operating power of the air conditioner, the compressor operating frequency, the compressor suction temperature, the evaporator outlet air temperature, the condenser outlet pipe temperature, and the outer fan rotating speed into a supercooling prediction mathematical model to obtain a current supercooling prediction value; the supercooling prediction mathematical model is determined according to correction coefficients corresponding to each operating parameter and constant terms; The target value acquisition module is configured to determine a current supercooling target value according to the current condenser inlet air temperature; The operating control module is configured to obtain a current air conditioner adjustment strategy based on a difference between the current supercooling prediction value and the current supercooling target value, and control the air conditioner to operate based on the current air conditioner adjustment strategy.

11. An air conditioning apparatus characterized by comprising: The control module and a data acquisition module are included, the data acquisition module is connected to the control module, the data acquisition module is configured to acquire a current operating parameter of the air conditioner in the cooling mode and a current condenser inlet air temperature, and the control module is configured to control the air conditioner based on the current operating parameter and the current condenser inlet air temperature according to the air conditioner control method in any one of claims 1 to 9.

12. A computer readable storage medium having stored thereon a computer program, characterized in that, The computer program, when executed by a processor, implements the steps of the method in any one of claims 1 to 9.

13. A computer program product comprising a computer program, characterized in that, The computer program, when executed by a processor, implements the steps of the method in any one of claims 1 to 9.

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