Control method and control device of air conditioner and air conditioner

Abstract

The application provides a control method and device of an air conditioner and the air conditioner. The method comprises: obtaining an actual operating frequency of a compressor of the air conditioner; determining compensation information of an electronic expansion valve in a current operating mode of the air conditioner; and determining a target opening degree and a target discharge temperature of the electronic expansion valve according to the actual operating frequency and the compensation information. The method considers the compensation information of the electronic expansion valve in the current operating mode of the air conditioner, eliminates errors in the adjustment of the electronic expansion valve caused by external factors as much as possible, and determines the target opening degree and the target discharge temperature according to the current operating mode and the compensation information, so that the determined target opening degree and target discharge temperature are more consistent with the operating parameters and the operating mode of the current air conditioner, the air conditioner is adjusted in different operating modes, the cooling effect and the heating effect of the air conditioner are ensured, and the working efficiency is improved.

Description

Technical Field

[0001] This invention relates to the field of electrical technology, and more particularly to a control method, control device, and air conditioner for air conditioning. Background Technology

[0002] In related technologies, during the operation of air conditioners in cooling and heating functions or after prolonged use, the valve opening of the electronic expansion valve of the air conditioner sometimes fails to meet the predetermined requirements or is improperly controlled. This often affects the function of the air conditioner, resulting in a reduction in cooling or heating effects, as well as a decrease in cooling efficiency, thus failing to achieve the best user experience. Summary of the Invention

[0003] This invention provides a control method, control device, and air conditioner to address the deficiencies in the prior art and achieve the following technical effects: the determination of the target opening degree and target exhaust temperature is more in line with the current working parameters and working modes of the air conditioner, enabling targeted adjustments under different working modes, ensuring the cooling and heating effects of the air conditioner, and improving working efficiency.

[0004] A method for controlling an air conditioner according to a first aspect of the present invention includes:

[0005] Obtain the actual operating frequency of the air conditioner's compressor;

[0006] Determine the compensation information of the electronic expansion valve in the current operating mode of the air conditioner;

[0007] Based on the actual operating frequency and the compensation information, the target opening degree and target exhaust temperature of the electronic expansion valve are determined.

[0008] According to one embodiment of the present invention, the compensation information includes opening compensation information and exhalation temperature compensation information;

[0009] The step of determining the target opening degree and target exhaust temperature of the electronic expansion valve based on the actual operating frequency and the compensation information specifically includes:

[0010] The target opening is determined based on the actual operating frequency and the opening compensation information;

[0011] The target exhalation temperature is determined based on the actual operating frequency and the exhalation temperature compensation information.

[0012] According to one embodiment of the present invention, the opening compensation information includes first opening compensation information;

[0013] The step of determining the compensation information of the electronic expansion valve in the current operating mode of the air conditioner specifically includes:

[0014] If it is determined that the air conditioner is in the first operating stage after being turned on, then the first opening degree compensation information of the air conditioner in the current operating mode is determined according to the air conditioner model, the current operating mode, and the pre-operation parameters of the air conditioner before the temperature sensor is turned off.

[0015] Furthermore, the step of determining the target opening based on the actual operating frequency and the opening compensation information specifically includes:

[0016] Based on the actual operating frequency and the first opening degree compensation information, determine the first target opening degree of the air conditioner in the first operating phase of the current operating mode;

[0017] The first operating phase is the phase in which the air conditioner compressor runs for a first set time after being turned on and the temperature sensor is turned off.

[0018] According to an embodiment of the present invention, the first opening compensation information includes a first opening compensation coefficient A1, a first opening compensation constant B1 and a pre-opening compensation amount C1, the actual operating frequency is F, and the pre-operating parameters include the pre-valve opening Y0 of the electronic expansion valve before the temperature sensor closes and the pre-frequency F0 of the compressor before the temperature sensor closes.

[0019] The formula for calculating the target opening Y1 is:

[0020] Y1=INT(y1), y1=A1*F+B1+C1, C1=Y0-INT(A1*F0+B1);

[0021] Wherein, INT(y1) is the floor function, which means that y1 is floored, and the first opening degree compensation coefficient A1 and the first opening degree compensation constant B1 are determined according to the air conditioner model and the current working mode.

[0022] According to one embodiment of the present invention, the opening compensation information includes second opening compensation information;

[0023] The step of determining the compensation information of the electronic expansion valve in the current operating mode of the air conditioner specifically includes:

[0024] If it is determined that the air conditioner is in the second operating stage after being turned on, then the second opening degree compensation information of the air conditioner in the current operating mode is determined according to the air conditioner model and the current operating mode.

[0025] Furthermore, the step of determining the target opening based on the actual operating frequency and the opening compensation information specifically includes:

[0026] Based on the actual operating frequency and the second opening compensation information, the second target opening degree of the air conditioner is determined within the second operating phase of the current operating mode;

[0027] The second operating phase is the phase in which the air conditioner compressor runs for a second set duration after being turned on, and the first set duration is less than the second set duration.

[0028] According to one embodiment of the present invention, the second opening degree compensation information includes a second opening degree compensation coefficient A2 and a second opening degree compensation constant B2, and the actual operating frequency is F;

[0029] The formula for calculating the second target opening Y2 is:

[0030] Y2=INT(y2), and y2=A2*F+B2;

[0031] Wherein, INT(y2) is the floor function, which means that y2 is floored, and the second opening compensation coefficient A2 and the second opening compensation constant B2 are determined according to the air conditioner model and the current working mode.

[0032] According to an embodiment of the present invention, the step of determining the compensation information of the electronic expansion valve in the current operating mode of the air conditioner specifically includes:

[0033] Obtain the outdoor ambient temperature;

[0034] Based on the air conditioner model, the outdoor ambient temperature, and the current operating mode, determine the exhaust temperature compensation information of the electronic expansion valve in the current operating mode of the air conditioner.

[0035] According to one embodiment of the present invention, the exhalation temperature compensation information includes an exhalation temperature compensation coefficient A3, a first temperature compensation constant B3, and a second temperature compensation constant C2, and the actual operating frequency is F;

[0036] The formula for calculating the target exhalation temperature T is:

[0037] T=INT(t), and t=A3*F+B3+C2;

[0038] Wherein, INT(t) is a floor function, which means that t is rounded down, and the exhaust temperature compensation coefficient A3 and the first temperature compensation constant B3 are determined according to the air conditioner model and the current working mode, and the second temperature compensation constant C2 is determined at least according to the outdoor ambient temperature.

[0039] According to one embodiment of the present invention, the air conditioner control method further includes:

[0040] Based on the fact that the outdoor ambient temperature is within the first range, the second temperature compensation constant is determined to be the first set value;

[0041] Based on the fact that the outdoor ambient temperature is within the second range, the second temperature compensation constant is determined to be the second set value;

[0042] Wherein, the first interval range is smaller than the second interval range, and the first set amount is smaller than the second set amount.

[0043] According to an embodiment of the present invention, after the step of determining the target exhaust temperature based on the actual operating frequency and the exhaust temperature compensation information, the air conditioning control method further includes:

[0044] Obtain the maximum and minimum exhaust temperature of the electronic expansion valve, and compare the target exhaust temperature with the maximum and minimum exhaust temperature, respectively.

[0045] If the target exhalation temperature is less than the minimum exhalation temperature, then the minimum exhalation temperature is taken as the updated target exhalation temperature.

[0046] If the target exhalation temperature is greater than the maximum exhalation temperature, then the maximum exhalation temperature is taken as the updated target exhalation temperature.

[0047] According to one embodiment of the present invention, the air conditioner control method further includes:

[0048] The actual operating frequency is acquired once every set detection time interval, and the frequency difference between two adjacent actual operating frequencies is compared with the magnitude of a set change value.

[0049] If the frequency difference is determined to be greater than the set change value, the target opening degree and the target exhalation temperature are calculated and updated using the newly acquired actual operating frequency.

[0050] An air conditioner control device according to a second aspect embodiment of the present invention includes:

[0051] The first acquisition module is used to acquire the actual operating frequency of the air conditioner's compressor;

[0052] The second acquisition module is used to determine the compensation information of the electronic expansion valve in the current working mode of the air conditioner;

[0053] The control module is used to determine the target opening degree and target exhaust temperature of the electronic expansion valve based on the actual operating frequency and the compensation information.

[0054] An air conditioner according to a third aspect embodiment of the present invention includes:

[0055] The air conditioning control device as described in the second aspect embodiment of the present invention.

[0056] An electronic device according to a fourth aspect of the present invention includes a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the program to implement the air conditioning control method as described in the first aspect of the present invention.

[0057] This invention provides a control method for an air conditioner. This method takes into account the compensation information of the electronic expansion valve in the current operating mode of the air conditioner. By using the actual operating frequency of the compressor and the compensation information, the target opening degree and target discharge temperature of the electronic expansion valve are determined, thereby minimizing the error caused by external factors in the adjustment of the electronic expansion valve. By incorporating the judgment of the current operating mode and the acquisition of compensation information, the determination of the target opening degree and target discharge temperature is more consistent with the current operating parameters and operating mode of the air conditioner, enabling targeted adjustment under different operating modes, ensuring the cooling and heating effects of the air conditioner, and improving working efficiency. Attached Figure Description

[0058] To more clearly illustrate the technical solutions in this invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0059] Figure 1 This is a flowchart illustrating the air conditioner control method provided by the present invention;

[0060] Figure 2 This is a schematic diagram of the structure of the air conditioner control device provided by the present invention;

[0061] Figure 3 This is a schematic diagram of the structure of the electronic device provided by the present invention. Detailed Implementation

[0062] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this invention. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without creative effort are within the scope of protection of this invention.

[0063] The air conditioner control method, control device, and air conditioner proposed in this invention are described below with reference to the accompanying drawings. Before providing a detailed description of the embodiments of this invention, the overall application scenario is first described. The air conditioner control method, control device, electronic device, and computer-readable storage medium of this invention can be applied locally to the air conditioner, to cloud platforms in the Internet field, or to other types of cloud platforms in the Internet field, or to third-party devices. These third-party devices may include various types such as mobile phones, tablets, laptops, in-vehicle computers, and other smart terminals.

[0064] The following description uses only the control method applicable to air conditioners as an example. It should be understood that the control method of this embodiment can also be applied to cloud platforms and third-party devices.

[0065] like Figure 1 As shown, an air conditioning control method according to a first aspect embodiment of the present invention includes:

[0066] Step S1: Obtain the actual operating frequency of the air conditioner's compressor;

[0067] Step S2: Determine the compensation information of the electronic expansion valve in the current operating mode of the air conditioner;

[0068] Step S3: Determine the target opening degree and target exhaust temperature of the electronic expansion valve based on the actual operating frequency and compensation information.

[0069] According to an embodiment of the present invention, the control method for an air conditioner operates as follows: First, the controller obtains the actual operating frequency of the air conditioner's compressor and determines the current operating mode of the air conditioner (e.g., cooling mode or heating mode). Then, the controller determines the compensation information of the electronic expansion valve in the current operating mode of the air conditioner. Finally, based on the actual operating frequency and the compensation information, the controller determines the target opening degree and target discharge temperature of the electronic expansion valve, and adjusts the opening degree and discharge temperature of the electronic expansion valve based on the target opening degree and target discharge temperature.

[0070] In related technologies, during the operation of air conditioners in cooling and heating functions or after prolonged use, the valve opening of the electronic expansion valve of the air conditioner sometimes fails to meet the predetermined requirements or is improperly controlled. This often affects the function of the air conditioner, resulting in a reduction in cooling or heating effects, as well as a decrease in cooling efficiency, thus failing to achieve the best user experience.

[0071] Therefore, in order to solve the technical defects existing in the above-mentioned related technologies, the present invention provides an air conditioner control method. This method takes into account the compensation information of the electronic expansion valve in the current working mode of the air conditioner. By using the actual operating frequency of the compressor and the compensation information, the target opening degree and target discharge temperature of the electronic expansion valve are determined, thereby eliminating the error of external factors on the adjustment of the electronic expansion valve as much as possible. By incorporating the judgment of the current working mode and the acquisition of compensation information, the determination of the target opening degree and target discharge temperature is more in line with the current working parameters and working mode of the air conditioner, realizing targeted adjustment under different working modes, ensuring the cooling and heating effects of the air conditioner, and improving working efficiency.

[0072] According to some embodiments of the present invention, the compensation information includes opening compensation information and exhalation temperature compensation information.

[0073] The steps for determining the target opening degree and target exhaust temperature of the electronic expansion valve based on the actual operating frequency and compensation information include:

[0074] The target opening degree is determined based on the actual operating frequency and opening degree compensation information;

[0075] The target exhalation temperature is determined based on the actual operating frequency and exhalation temperature compensation information.

[0076] According to some embodiments of the present invention, the opening compensation information includes first opening compensation information and second opening compensation information, and the target opening includes first target opening and second target opening. After the air conditioner is turned on, it is divided into two operating stages, namely the first operating stage and the second operating stage.

[0077] The first operating stage, the first opening compensation information, and the first target opening are in a one-to-one correspondence. That is, when the air conditioner is in the first operating stage, the first compensation information is obtained, and the first target opening of the electronic expansion valve in the first operating stage is determined based on the first compensation information. Similarly, the second operating stage, the second opening compensation information, and the second target opening are in a one-to-one correspondence. That is, when the air conditioner is in the second operating stage, the second compensation information is obtained, and the second target opening of the electronic expansion valve in the second operating stage is determined based on the second compensation information.

[0078] In some specific embodiments, the first operating phase is the phase where the air conditioner compressor runs for a first set time after being turned on and the temperature sensor is turned off. For example, the first operating phase is the phase where the air conditioner compressor restarts after being in a dormant state and runs continuously for 3 minutes, and the temperature sensor switches from on to off. The second operating phase is the phase where the air conditioner compressor runs for a second set time after being turned on, and the first set time is less than the second set time. For example, the first operating phase is the phase where the air conditioner compressor restarts after being in a dormant state and runs continuously for 6 minutes. The dormant state includes the state where the air conditioner is turned off, the state when the air conditioner switches operating modes, and the state after the air conditioner has finished defrosting.

[0079] The following describes the method for obtaining the first target opening degree of the electronic expansion valve when the air conditioner is in the first operating stage and its specific implementation. The first operating stage is the stage in which the air conditioner compressor runs for a first set time after being turned on and the temperature sensor is turned off (for example, the first set time is three minutes).

[0080] In one embodiment of the present invention, the step of determining the compensation information of the electronic expansion valve in the current operating mode of the air conditioner specifically includes:

[0081] Once it is determined that the air conditioner is in the first operating stage after being turned on, the first opening degree compensation information of the air conditioner in the current operating mode is determined based on the air conditioner model, the current operating mode, and the pre-operational parameters of the air conditioner before the temperature sensor is turned off.

[0082] It is understandable that differences in air conditioner models and current operating modes can affect the operating parameters of the air conditioner during actual operation. Therefore, this method takes into account the influencing factors of air conditioner models and current operating modes and compensates for the opening of the electronic expansion valve to ensure the accuracy of obtaining the target opening of the electronic expansion valve.

[0083] Furthermore, when the temperature sensor is turned off, the operating parameters of the air conditioner will also be affected and change. Therefore, this method takes into account the influence of the temperature sensor being turned off and compensates for the opening of the electronic expansion valve, thereby further improving the accuracy of the target opening obtained by this method.

[0084] Furthermore, the steps for determining the target opening based on the actual operating frequency and opening compensation information specifically include:

[0085] Based on the actual operating frequency and the first opening degree compensation information, determine the first target opening degree of the air conditioner in the first operating stage under the current operating mode.

[0086] Furthermore, the first opening compensation information includes the first opening compensation coefficient A1, the first opening compensation constant B1, and the pre-opening compensation amount C1. The actual operating frequency is F, and the pre-operating parameters include the pre-valve opening Y0 of the electronic expansion valve before the temperature sensor closes and the pre-frequency F0 of the compressor before the temperature sensor closes.

[0087] The formula for calculating the first target opening Y1 is:

[0088] Y1=INT(y1), y1=A1*F+B1+C1, C1=Y0-INT(A1*F0+B1).

[0089] Here, INT(y1) is the floor function, which means rounding y1 down; INT(A1*F0+B1) means rounding (A1*F0+B1) down. For example, the floor function processing is as follows: INT(1.98)=1, INT(1.02)=1, INT(0.98)=0, INT(-0.01)=-1, INT(-3.98)=-4, INT(-3.02)=-4, that is, rounding to the smaller.

[0090] Furthermore, in the above formula for calculating the first target opening, A1 and y1 are both decimals, while B1 is an integer, and the value range of A1 is 0 to 8, while the value range of B1 is -100 to 480.

[0091] In the above formula for calculating the first target opening degree, the first opening degree compensation coefficient A1 and the first opening degree compensation constant B1 are determined according to the air conditioner model and the current working mode.

[0092] For example, the correspondence between the first opening compensation coefficient A1 and the first opening compensation constant B1 and the air conditioner model and the current operating mode is shown in Table 1 below:

[0093] Table 1

[0094]

[0095] In the above formula for calculating the first target opening, the pre-opening compensation amount C1 is determined based on the pre-operating parameters, namely the pre-valve opening Y0 and the pre-frequency F0.

[0096] For example, in the above formula for calculating the first target opening degree, if the air conditioner enters defrost mode in fixed-frequency mode, after the initial operation phase following defrost completion lasts for 3 minutes, the first target opening degree is calculated with C1 set to 0. Similarly, if the air conditioner enters heating or cooling mode in fixed-frequency mode and runs continuously for 3 minutes during the initial operation phase, the first target opening degree is also calculated with C1 set to 0.

[0097] The following describes the method for obtaining the second target opening degree of the electronic expansion valve when the air conditioner is in the second operating stage and its specific implementation. The second operating stage is the stage in which the air conditioner compressor runs for a second set duration after being turned on (for example, the second set duration is six minutes).

[0098] In another embodiment of the present invention, the step of determining the compensation information of the electronic expansion valve in the current operating mode of the air conditioner specifically includes:

[0099] If the air conditioner is determined to be in the second operating stage after being turned on, then the second opening degree compensation information of the air conditioner in the current operating mode is determined according to the air conditioner model and the current operating mode.

[0100] It is understandable that differences in air conditioner models and current operating modes can affect the operating parameters of the air conditioner during actual operation. Therefore, this method takes into account the influencing factors of air conditioner models and current operating modes and compensates for the opening of the electronic expansion valve to ensure the accuracy of obtaining the target opening of the electronic expansion valve.

[0101] Furthermore, the steps for determining the target opening based on the actual operating frequency and opening compensation information specifically include:

[0102] Based on the actual operating frequency and the second opening degree compensation information, the second target opening degree of the air conditioner is determined in the second operating phase under the current operating mode.

[0103] Furthermore, the second opening compensation information includes the second opening compensation coefficient A2 and the second opening compensation constant B2, with an actual operating frequency of F.

[0104] The formula for calculating the second target opening Y2 is:

[0105] Y2=INT(y2), and y2=A2*F+B2;

[0106] Here, INT(y2) is the floor function, which means rounding y2 down. For example, the floor function can be used to process y2 as follows: INT(1.98) = 1, INT(1.02) = 1, INT(0.98) = 0, INT(-0.01) = -1, INT(-3.98) = -4, INT(-3.02) = -4, which means rounding down to the smaller value.

[0107] Furthermore, in the above formula for calculating the second target opening, A2 and y2 are both decimals, while B2 is an integer, and the value range of A2 is 0 to 8, while the value range of B2 is -100 to 480.

[0108] In the above formula for calculating the second target opening degree, the second opening degree compensation coefficient A2 and the second opening degree compensation constant B2 are determined according to the air conditioner model and the current working mode.

[0109] For example, the correspondence between the second opening compensation coefficient A2 and the second opening compensation constant B2 and the air conditioner model and the current operating mode is shown in Table 2 below:

[0110] Table 2

[0111]

[0112] After introducing the method for obtaining the target opening degree and its specific embodiments in this invention, the following section will describe in detail the method for obtaining the target exhalation temperature and its specific embodiments in this invention.

[0113] According to some embodiments of the present invention, the step of determining compensation information of the electronic expansion valve in the current operating mode of the air conditioner specifically includes:

[0114] Obtain the outdoor ambient temperature;

[0115] Based on the air conditioner model, outdoor ambient temperature, and current operating mode, determine the exhaust temperature compensation information of the electronic expansion valve in the current operating mode of the air conditioner.

[0116] It is understandable that differences in air conditioner model, current operating mode, and outdoor ambient temperature can affect the operating parameters of the air conditioner during actual operation. Therefore, this method takes into account the influencing factors of air conditioner model, current operating mode, and outdoor ambient temperature, and compensates for the discharge temperature of the electronic expansion valve to ensure the accuracy of the target discharge temperature of the electronic expansion valve.

[0117] Furthermore, the exhalation temperature compensation information includes the exhalation temperature compensation coefficient A3, the first temperature compensation constant B3, and the second temperature compensation constant C2, with an actual operating frequency of F.

[0118] The formula for calculating the target exhalation temperature T is:

[0119] T=INT(t), and t=A3*F+B3+C2;

[0120] Wherein, INT(t) is the floor function, which means to round t down. In addition, t and A3 are decimals, and T and B3 are integers. The value range of A3 is 0.01 to 2.00, and the value range of B3 is -50 to 200.

[0121] In the above formula for calculating the target exhaust temperature, the exhaust temperature compensation coefficient A3 and the first temperature compensation constant B3 are determined according to the air conditioner model and the current operating mode.

[0122] For example, the correspondence between the exhaust temperature compensation coefficient A3 and the first temperature compensation constant B3 and the air conditioner model and the current operating mode is shown in Table 3 below:

[0123] Table 3

[0124]

[0125] In the above formula for calculating the target exhalation temperature, the second temperature compensation constant C2 is determined at least based on the outdoor ambient temperature.

[0126] Specifically, the control methods for air conditioning also include:

[0127] Based on the outdoor ambient temperature being within the first range, the second temperature compensation constant is determined to be the first set value;

[0128] Based on the outdoor ambient temperature being within the second range, the second temperature compensation constant is determined as the second set value.

[0129] The first interval range is smaller than the second interval range, and the first setting value is smaller than the second setting value. In addition, the values ​​of the first setting value and the second setting value are different when the current working mode of the air conditioner is different.

[0130] For example, in cooling mode, when the outdoor ambient temperature is less than 20°C, the second temperature compensation constant C2 is -10; when the outdoor ambient temperature is greater than or equal to 20°C and less than 30°C, the second temperature compensation constant C2 is -5; when the outdoor ambient temperature is greater than or equal to 30°C and less than 40°C, the second temperature compensation constant C2 is 0; and when the outdoor ambient temperature is greater than or equal to 40°C, the second temperature compensation constant C2 is 5.

[0131] In heating mode, when the outdoor ambient temperature is less than 0℃, the second temperature compensation constant C2 is -5; when the outdoor ambient temperature is greater than or equal to 0℃ and less than 5℃, the second temperature compensation constant C2 is 0; when the outdoor ambient temperature is greater than or equal to 5℃ and less than 10℃, the second temperature compensation constant C2 is 5; when the outdoor ambient temperature is greater than or equal to 10℃, the second temperature compensation constant C2 is 10.

[0132] According to some embodiments of the present invention, after determining the target exhaust temperature based on the actual operating frequency and exhaust temperature compensation information, the air conditioning control method further includes:

[0133] Obtain the maximum and minimum exhaust temperatures of the electronic expansion valve, and compare the target exhaust temperature with the maximum and minimum exhaust temperatures respectively.

[0134] If the target exhalation temperature is less than the minimum exhalation temperature, then the minimum exhalation temperature is used as the updated target exhalation temperature.

[0135] If the target exhalation temperature is greater than the maximum exhalation temperature, then the maximum exhalation temperature is used as the updated target exhalation temperature.

[0136] In this embodiment, the air conditioning system pre-stores the maximum and minimum exhaust temperatures that the electronic expansion valve can achieve. Only when the target exhaust temperature calculated by the above formula is within the maximum and minimum exhaust temperatures will the target exhaust temperature be used as the actual exhaust temperature of the electronic expansion valve to adjust the electronic expansion valve. When the target exhaust temperature exceeds the range of the maximum and minimum exhaust temperatures, since the electronic expansion valve cannot reach the target exhaust temperature, the system will select the maximum or minimum exhaust temperature as the updated target exhaust temperature and use it as the actual exhaust temperature to adjust the electronic expansion valve.

[0137] According to some embodiments of the present invention, the air conditioning control method further includes:

[0138] The actual operating frequency is acquired every set detection interval, and the frequency difference between two adjacent actual operating frequencies is compared with the set change value.

[0139] If the frequency difference is determined to be greater than the set change value, the target opening degree and target exhaust temperature are calculated and updated using the newly acquired actual operating frequency.

[0140] The above steps also apply to the calculation of the first target opening, the second target opening, and the target exhalation temperature in this method.

[0141] In one specific embodiment, for the target opening degree, the acquisition of the actual operating frequency and the calculation of the target opening degree are both performed in 15-second cycles. At the same time, the frequency change is judged. If the change of the compressor frequency does not exceed 2Hz, the target opening degree is maintained at the previously acquired actual operating frequency. Otherwise, the target opening degree is calculated and updated based on the currently acquired actual operating frequency.

[0142] For example, the first actual operating frequency obtained is 30 Hz, and the first calculated target opening degree is 138 Pulse (Pulse is the unit of opening degree, which means step); the second actual operating frequency obtained is 32 Hz. Since the difference between the first and second actual operating frequencies does not exceed 2 Hz, the target opening degree remains unchanged at 138 Pulse.

[0143] For example, the first actual operating frequency obtained is 30 Hz, and the first calculated target opening is 138 Pulse; the second actual operating frequency obtained is 33 Hz. Since the difference between the first and second actual operating frequencies exceeds 2 Hz, the target opening is calculated and updated according to the second actual operating frequency (i.e., 33 Hz). At this time, the updated target opening is 148 Pulse.

[0144] In another specific embodiment, for the target exhaust temperature, the acquisition of the actual operating frequency and the calculation of the target exhaust temperature are both performed in 15-second cycles. At the same time, the frequency change is judged. If the compressor frequency change does not exceed 2Hz, the target exhaust temperature is maintained at the previously acquired actual operating frequency. Otherwise, the target exhaust temperature is calculated and updated based on the currently acquired actual operating frequency.

[0145] It should also be noted that when changes in the outdoor ambient temperature cause a change in the second temperature compensation constant C2, resulting in a change in the target exhaust temperature, an update cannot be performed within 20 minutes. The previous target exhaust temperature is maintained for 20 minutes, then the current target exhaust temperature is updated and maintained at this target exhaust temperature for another 20 minutes, and this cycle repeats. However, with the same second temperature compensation constant C2, the update of the target exhaust temperature does not require this 20-minute restriction. For example, under the aforementioned 20-minute hold function, the steps described above regarding updating the target exhaust temperature based on changes in the actual operating frequency of the compressor remain valid.

[0146] It is understandable that the aforementioned 20-minute hold function is to prevent sudden changes in the target exhalation temperature caused by fluctuations in the outdoor ambient temperature at the critical point.

[0147] The control device for an air conditioner provided by the present invention will be described below. The control device for an air conditioner described below can be referred to in correspondence with the control method for an air conditioner described above.

[0148] An air conditioner control device according to a second aspect embodiment of the present invention includes:

[0149] The first acquisition module 110 is used to acquire the actual operating frequency of the air conditioner's compressor;

[0150] The second acquisition module 120 is used to determine the compensation information of the electronic expansion valve in the current working mode of the air conditioner;

[0151] The control module 130 is used to determine the target opening degree and target exhaust temperature of the electronic expansion valve based on the actual operating frequency and compensation information.

[0152] An air conditioner according to a third aspect embodiment of the present invention includes a control device for an air conditioner as described in a second aspect embodiment of the present invention.

[0153] According to the air conditioner control device and air conditioner of the present invention, the compensation information of the electronic expansion valve in the current working mode of the air conditioner is taken into account. By using the actual operating frequency of the compressor and the compensation information, the target opening degree and target discharge temperature of the electronic expansion valve are determined, thereby eliminating the error of external factors on the adjustment of the electronic expansion valve as much as possible. By incorporating the judgment of the current working mode and the acquisition of compensation information, the determination of the target opening degree and target discharge temperature is more in line with the current working parameters and working mode of the air conditioner, realizing targeted adjustment under different working modes, ensuring the cooling and heating effects of the air conditioner, and improving working efficiency.

[0154] Figure 3 An example is a schematic diagram of the physical structure of an electronic device, such as... Figure 3 As shown, the electronic device may include a processor 810, a communications interface 820, a memory 830, and a communication bus 840. The processor 810, communications interface 820, and memory 830 communicate with each other via the communication bus 840. The processor 810 can call logical instructions from the memory 830 to execute the air conditioner control method described above.

[0155] Furthermore, the logical instructions in the aforementioned memory 830 can be implemented as software functional units and, when sold or used as independent products, can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention, in essence, or the part that contributes to the prior art, or a part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods of the various embodiments of the present invention. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0156] On the other hand, the present invention also provides a computer program product, which includes a computer program that can be stored on a non-transitory computer-readable storage medium. When the computer program is executed by a processor, the computer is able to execute the air conditioning control method described above.

[0157] In another aspect, the present invention also provides a non-transitory computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, is implemented to perform the air conditioning control method described above.

[0158] The device embodiments described above are merely illustrative. The units described as separate components may or may not be physically separate, and the components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the modules can be selected to achieve the purpose of this embodiment according to actual needs. Those skilled in the art can understand and implement this without any creative effort.

[0159] Through the above description of the embodiments, those skilled in the art can clearly understand that each embodiment can be implemented by means of software plus necessary general-purpose hardware platforms, and of course, it can also be implemented by hardware. Based on this understanding, the above technical solutions, in essence or the part that contributes to the prior art, can be embodied in the form of a software product. This computer software product can be stored in a computer-readable storage medium, such as ROM / RAM, magnetic disk, optical disk, etc., including several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute the methods of various embodiments or some parts of embodiments.

[0160] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A method for controlling an air conditioner, characterized in that, include: Obtain the actual operating frequency of the air conditioner's compressor; Determine the compensation information of the electronic expansion valve in the current operating mode of the air conditioner; Based on the actual operating frequency and the compensation information, determine the target opening degree and target exhaust temperature of the electronic expansion valve; The compensation information includes opening compensation information and exhalation temperature compensation information; The step of determining the target opening degree and target exhaust temperature of the electronic expansion valve based on the actual operating frequency and the compensation information specifically includes: The target opening is determined based on the actual operating frequency and the opening compensation information; The target exhalation temperature is determined based on the actual operating frequency and the exhalation temperature compensation information. The opening compensation information includes first opening compensation information and second opening compensation information, and the target opening includes first target opening and second target opening. After the air conditioner is turned on, it is divided into a first operating stage and a second operating stage. The first operating stage, the first opening compensation information and the first target opening correspond one-to-one.

2. The air conditioning control method according to claim 1, characterized in that, The opening compensation information includes first opening compensation information; The step of determining the compensation information of the electronic expansion valve in the current operating mode of the air conditioner specifically includes: If it is determined that the air conditioner is in the first operating stage after being turned on, then the first opening degree compensation information of the air conditioner in the current operating mode is determined according to the air conditioner model, the current operating mode, and the pre-operation parameters of the air conditioner before the temperature sensor is turned off. Furthermore, the step of determining the target opening based on the actual operating frequency and the opening compensation information specifically includes: Based on the actual operating frequency and the first opening degree compensation information, determine the first target opening degree of the air conditioner in the first operating phase of the current operating mode; The first operating phase is the phase in which the air conditioner compressor runs for a first set time after being turned on and the temperature sensor is turned off.

3. The air conditioning control method according to claim 2, characterized in that, The first opening compensation information includes a first opening compensation coefficient A1, a first opening compensation constant B1, and a pre-opening compensation amount C1. The actual operating frequency is F. The pre-operating parameters include the pre-valve opening Y0 of the electronic expansion valve before the temperature sensor closes and the pre-frequency F0 of the compressor before the temperature sensor closes. The formula for calculating the target opening Y1 is: Y1=INT(y1), y1=A1*F+B1+C1, C1=Y0-INT(A1*F0+B1); Wherein, INT(y1) is the floor function, which means that y1 is floored, and the first opening degree compensation coefficient A1 and the first opening degree compensation constant B1 are determined according to the air conditioner model and the current working mode.

4. The air conditioning control method according to claim 2, characterized in that, The opening compensation information includes second opening compensation information; The step of determining the compensation information of the electronic expansion valve in the current operating mode of the air conditioner specifically includes: If it is determined that the air conditioner is in the second operating stage after being turned on, then the second opening degree compensation information of the air conditioner in the current operating mode is determined according to the air conditioner model and the current operating mode. Furthermore, the step of determining the target opening based on the actual operating frequency and the opening compensation information specifically includes: Based on the actual operating frequency and the second opening compensation information, the second target opening degree of the air conditioner is determined within the second operating phase of the current operating mode; The second operating phase is the phase in which the air conditioner compressor runs for a second set duration after being turned on, and the first set duration is less than the second set duration.

5. The air conditioning control method according to claim 4, characterized in that, The second opening compensation information includes a second opening compensation coefficient A2 and a second opening compensation constant B2, and the actual operating frequency is F; The formula for calculating the second target opening Y2 is: Y2=INT(y2), and y2=A2*F+B2; Wherein, INT(y2) is the floor function, which means that y2 is floored, and the second opening compensation coefficient A2 and the second opening compensation constant B2 are determined according to the air conditioner model and the current working mode.

6. The air conditioning control method according to any one of claims 1 to 5, characterized in that, The step of determining the compensation information of the electronic expansion valve in the current operating mode of the air conditioner specifically includes: Obtain the outdoor ambient temperature; Based on the air conditioner model, the outdoor ambient temperature, and the current operating mode, determine the exhaust temperature compensation information of the electronic expansion valve in the current operating mode of the air conditioner.

7. The air conditioning control method according to claim 6, characterized in that, The exhalation temperature compensation information includes an exhalation temperature compensation coefficient A3, a first temperature compensation constant B3, and a second temperature compensation constant C2; the actual operating frequency is F. The formula for calculating the target exhalation temperature T is: T=INT(t), and t=A3*F+B3+C2; Wherein, INT(t) is a floor function, which means that t is rounded down, and the exhaust temperature compensation coefficient A3 and the first temperature compensation constant B3 are determined according to the air conditioner model and the current working mode, and the second temperature compensation constant C2 is determined at least according to the outdoor ambient temperature.

8. The air conditioning control method according to claim 7, characterized in that, Also includes: Based on the fact that the outdoor ambient temperature is within the first range, the second temperature compensation constant is determined to be the first set value; Based on the fact that the outdoor ambient temperature is within the second range, the second temperature compensation constant is determined to be the second set value; Wherein, the first interval range is smaller than the second interval range, and the first set amount is smaller than the second set amount.

9. The air conditioning control method according to claim 7, characterized in that, After the step of determining the target exhalation temperature based on the actual operating frequency and the exhalation temperature compensation information, the method further includes: Obtain the maximum and minimum exhaust temperature of the electronic expansion valve, and compare the target exhaust temperature with the maximum and minimum exhaust temperature, respectively. If the target exhalation temperature is less than the minimum exhalation temperature, then the minimum exhalation temperature is taken as the updated target exhalation temperature. If the target exhalation temperature is greater than the maximum exhalation temperature, then the maximum exhalation temperature is taken as the updated target exhalation temperature.

10. The air conditioning control method according to any one of claims 1 to 5, characterized in that, Also includes: The actual operating frequency is acquired once every set detection time interval, and the frequency difference between two adjacent actual operating frequencies is compared with the magnitude of a set change value. If the frequency difference is determined to be greater than the set change value, the target opening degree and the target exhalation temperature are calculated and updated using the newly acquired actual operating frequency.

11. A control device for an air conditioner, characterized in that, include: The first acquisition module is used to acquire the actual operating frequency of the air conditioner's compressor; The second acquisition module is used to determine the compensation information of the electronic expansion valve in the current working mode of the air conditioner; The control module is used to determine the target opening degree and target exhaust temperature of the electronic expansion valve based on the actual operating frequency and the compensation information. The compensation information includes opening compensation information and exhalation temperature compensation information; The step of determining the target opening degree and target exhaust temperature of the electronic expansion valve based on the actual operating frequency and the compensation information specifically includes: The target opening is determined based on the actual operating frequency and the opening compensation information; The target exhalation temperature is determined based on the actual operating frequency and the exhalation temperature compensation information. The opening compensation information includes first opening compensation information and second opening compensation information, and the target opening includes first target opening and second target opening. After the air conditioner is turned on, it is divided into a first operating stage and a second operating stage. The first operating stage, the first opening compensation information and the first target opening correspond one-to-one.

12. An air conditioner, characterized in that, include: The air conditioner control device as described in claim 11.

13. An electronic device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that, When the processor executes the program, it implements the air conditioner control method as described in any one of claims 1 to 10.

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