Method and apparatus for air conditioner control, air conditioner, and storage medium

Abstract

The application relates to the technical field of intelligent devices, and discloses a method and device for air conditioner control, an air conditioner and a storage medium. The method comprises the following steps: acquiring a current indoor temperature value and a current outdoor temperature value corresponding to an air conditioner action area; in the case that it is determined that the power saving fine adjustment condition is met according to the current indoor temperature value and the current outdoor temperature value, performing proportional differential (PD) operation according to a current first temperature difference value, a current second temperature difference value and a current third temperature difference value to obtain a current frequency adjustment value, wherein the current first temperature difference value is the difference between the current indoor temperature value and a target temperature value, the current second temperature difference value is the difference between the current indoor temperature value and a previous indoor temperature value, and the current third temperature difference value is the difference between the current outdoor temperature value and a previous outdoor temperature value; and controlling the operation of an air conditioner compressor according to the current frequency adjustment value. In this way, the probability of frequent frequency rising and falling after reaching the temperature can be reduced, and the energy consumption is further reduced.

Description

Technical Field

[0001] This application relates to the field of smart device technology, such as methods, apparatus, air conditioners, and storage media for air conditioning control. Background Technology

[0002] Against the backdrop of global energy shortages and the government's vigorous promotion of energy conservation and emission reduction policies, the optimal control of air conditioning's overall power consumption, as a widely used energy-consuming device in daily life and industrial production, has become a core focus of the industry. The energy-saving performance of air conditioners not only directly affects user costs but is also closely related to the overall energy efficiency and environmental goals of society. Therefore, minimizing air conditioning power consumption while ensuring user comfort has become an important direction for air conditioning technology research and development.

[0003] Currently, mainstream air conditioner energy-saving control solutions on the market mainly revolve around intelligent temperature control. Their core logic is to adjust the air conditioner compressor frequency, outdoor fan speed, and indoor fan speed based on real-time detected indoor and outdoor temperature data, attempting to achieve energy savings by maintaining a constant indoor temperature. Specifically, when the indoor temperature is higher than the cooling set temperature or lower than the heating set temperature, the air conditioner control module increases the compressor frequency and adjusts the fan speed to enhance heat exchange efficiency and quickly approach the set temperature. When the indoor temperature reaches near the set temperature, it appropriately reduces the compressor frequency and fan speed to maintain temperature stability, thereby avoiding energy waste caused by continuous high-load operation.

[0004] However, the relevant control logic relies solely on the absolute values ​​of real-time indoor and outdoor temperatures for adjustment, neglecting the rate of change of indoor and outdoor temperatures and failing to predict temperature change trends. This makes it difficult for the air conditioning compressor to adapt to temperature changes in advance, often passively adjusting its operating frequency only when temperature fluctuations occur, easily leading to frequent frequency increases and decreases. Such frequent frequency switching not only increases power consumption but may also shorten the compressor's lifespan. Furthermore, the relevant technical solutions do not fully consider the disturbances caused by indoor heat sources, environment, and seasons, resulting in insufficient precision in indoor temperature control. Deviations in temperature control may further lead to unreasonable adjustments in equipment operation, indirectly increasing energy consumption. In conclusion, how to further improve energy efficiency has become a pressing technical problem to be solved in the field of air conditioning energy-saving control technology.

[0005] It should be noted that the information disclosed in the background section above is only used to enhance the understanding of the background of this application, and therefore may include information that does not constitute prior art known to those skilled in the art. Summary of the Invention

[0006] To provide a basic understanding of some aspects of the disclosed embodiments, a brief summary is given below. This summary is not intended as a general commentary, nor is it intended to identify key / important components or describe the scope of protection of these embodiments, but rather as a prelude to the detailed description that follows.

[0007] This disclosure provides a method, apparatus, air conditioner, and storage medium for air conditioning control, aiming to address the problem of reducing frequent fluctuations in compressor frequency and further improving energy efficiency in air conditioning systems.

[0008] In some embodiments, the method includes: Obtain the current indoor and outdoor temperature values ​​corresponding to the area affected by the air conditioner; If the power-saving fine-tuning conditions are met based on the current indoor temperature and the current outdoor temperature, proportional-derivative (PD) calculations are performed based on the current first temperature difference, the current second temperature difference, and the current third temperature difference to obtain the current frequency adjustment value. Here, the current first temperature difference is the difference between the current indoor temperature and the target temperature, the current second temperature difference is the difference between the current indoor temperature and the previous indoor temperature, and the current third temperature difference is the difference between the current outdoor temperature and the previous outdoor temperature. The operation of the air conditioning compressor is controlled based on the current frequency adjustment value.

[0009] In some embodiments, determining the conditions for energy-saving fine-tuning based on the current indoor temperature and the current outdoor temperature includes: If, within a first set time period, all current first temperature differences matching the current operating mode are less than or equal to the first set value, and within a second set time period ending at the current time, there exists one or more current second temperature differences whose absolute values ​​are greater than the second set value, or there exists one or more current third temperature differences whose absolute values ​​are greater than the third set value, then the power-saving fine-tuning condition is determined to be met.

[0010] In some embodiments, obtaining the current frequency adjustment value includes: Based on the current first temperature difference ΔT, the current second temperature difference ΔTao, the current third temperature difference ΔTout, and the indoor heat source disturbance coefficient D, the proportional-derivative (PD) operation is performed according to formula (1) to obtain the current frequency adjustment value. ; (1) in, Kp is the time weighting coefficient, K1 is the indoor temperature change coefficient, K2 is the outdoor temperature change coefficient, Kp is the proportional coefficient, and Kd is the differential coefficient.

[0011] In some embodiments, controlling the operation of the air conditioner compressor based on the current frequency adjustment value includes: Obtain the current operating frequency of the air conditioner compressor; If the current frequency adjustment value is greater than the adjustment threshold, the sum of the current operating frequency and the current frequency adjustment value is determined as the current operating frequency, and the corresponding compressor control is performed. If the current frequency adjustment value is less than or equal to the adjustment threshold, continue to control the compressor accordingly based on the current operating frequency.

[0012] In some embodiments, the method further includes: If the current operating frequency remains unchanged within the third set time period, and the current first temperature difference is under the outdoor unit control conditions that match the current monitoring count, reduce the first current fan speed of the outdoor fan according to the current downshift value that matches the current monitoring count, and perform corresponding outdoor fan control. If the current operating frequency remains unchanged within the third set time period, and the current first temperature difference is under the indoor unit control conditions that match the current monitoring count, the second current fan speed of the indoor fan is increased according to the current upgrade value that matches the current monitoring count, and the corresponding indoor fan control is performed.

[0013] In some embodiments, increasing the second current fan speed of the indoor fan according to the current increment value matching the current monitoring count includes: If the second current fan speed is neither the preset silent mode speed nor the lowest speed, the second current fan speed of the indoor fan is increased according to the current upgrade value that matches the current monitoring count.

[0014] In some embodiments, it also includes: If the current indoor and outdoor temperatures determine that the energy-saving conditions are not met, the corresponding air conditioning control will be implemented based on the first temperature difference.

[0015] In some embodiments, the air conditioner includes: Equipment body; The device described above for air conditioning control is installed on the main body of the equipment.

[0016] In some embodiments, the storage medium stores program instructions that, when executed, perform the above-described method for air conditioning control.

[0017] The method, apparatus, air conditioner, and storage medium for air conditioning control provided in this disclosure can achieve the following technical effects: When the air conditioner determines that energy-saving conditions are met based on the current indoor and outdoor temperatures, it can use PD calculations to obtain the corresponding current frequency adjustment value based on the temperature difference between the room temperature and the target temperature, as well as the changes in indoor and outdoor temperatures. This allows for corresponding control of the compressor. In this way, without adding hardware sensors, the traditional method of only looking at the instantaneous temperature difference can be upgraded to feedforward control that predicts the temperature trend. This allows the compressor to obtain the accurate current frequency adjustment value in advance, thereby eliminating frequent frequency increases and decreases after reaching the target temperature. The number of start-stop cycles is also significantly reduced, further reducing power consumption. Users can directly enjoy the integrated value-added experience of constant temperature, quiet operation, and energy saving without replacing the equipment, further improving the user experience.

[0018] The above general description and the description below are exemplary and illustrative only and are not intended to limit this application. Attached Figure Description

[0019] One or more embodiments are illustrated by way of example with reference to the accompanying drawings. These illustrations and drawings do not constitute a limitation on the embodiments. Elements having the same reference numerals in the drawings are shown as similar elements. The drawings are not to be scaled. And wherein: Figure 1 This is a schematic flowchart of an air conditioning control method provided in an embodiment of this disclosure; Figure 2 This is a schematic flowchart of an air conditioning control method provided in an embodiment of this disclosure; Figure 3 This is a schematic flowchart of an air conditioning control method provided in an embodiment of this disclosure; Figure 4 This is a schematic flowchart of an air conditioning control method provided in an embodiment of this disclosure; Figure 5 This is a schematic diagram of a structure for an air conditioning control device provided in an embodiment of this disclosure; Figure 6 This is a schematic diagram of a structure for an air conditioning control device provided in an embodiment of this disclosure; Figure 7 This is a schematic diagram of a structure for an air conditioning control device provided in an embodiment of this disclosure; Figure 8 This is a schematic diagram of an air conditioner provided in an embodiment of this disclosure. Detailed Implementation

[0020] To provide a more detailed understanding of the features and technical content of the embodiments of this disclosure, the implementation of the embodiments of this disclosure will be described in detail below with reference to the accompanying drawings. The accompanying drawings are for illustrative purposes only and are not intended to limit the embodiments of this disclosure. In the following technical description, for ease of explanation, several details are used to provide a full understanding of the disclosed embodiments. However, one or more embodiments may still be implemented without these details. In other cases, well-known structures and devices may be simplified in their depiction to simplify the drawings.

[0021] The terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this disclosure are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate for the embodiments of this disclosure described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion.

[0022] Unless otherwise stated, the term "multiple" means two or more.

[0023] In this embodiment of the disclosure, the character " / " indicates that the objects before and after it are in an "or" relationship. For example, A / B means: A or B.

[0024] The term "and / or" describes an association between objects, indicating that three relationships can exist. For example, A and / or B means: A or B, or A and B.

[0025] In this embodiment, the air conditioner incorporates the compressor, outdoor fan, and indoor fan into the same predictive PD closed-loop control based on four-dimensional parameters: temperature difference, rate of change, heat source, and time. This transforms the temperature change rate and heat source disturbance information into calculable energy-saving control quantities. In this way, without increasing any sensor or hardware costs, the traditional frequent start-stop upon reaching the set temperature can be upgraded to an intelligent energy-saving mode with advance prediction, three-dimensional linkage, and step-by-step energy reduction. As a result, the overall energy consumption of the unit is significantly reduced, the number of compressor start-stop cycles is greatly reduced, and room temperature fluctuations are further minimized. This also reduces the probability of excessively cold or hot conditions at night. Users can directly enjoy the triple benefits of quiet operation, energy saving, and constant temperature without replacing the equipment, significantly reducing the costs associated with ecosystem migration and after-sales service.

[0026] Figure 1 This is a flowchart illustrating an air conditioning control method according to an embodiment of this disclosure. The screen of the display device includes two or more display areas, combined with... Figure 1 The process used for air conditioning control includes: Step 101: Obtain the current indoor temperature and current outdoor temperature values ​​corresponding to the area where the air conditioner is in operation.

[0027] During operation, the air conditioner can collect the indoor and outdoor temperature values ​​of the area it operates in real time or periodically. Based on these values, it performs corresponding air conditioning control. For example, it can perform proportional-integral-derivative (PID) calculations based on the difference between the indoor temperature and the target temperature to obtain the corresponding compressor operating frequency and then implement corresponding control. In this embodiment, it is also necessary to acquire the indoor and outdoor temperature values ​​of the area it operates in real time or periodically. The current moment corresponds to the current indoor temperature value Tao and the current outdoor temperature value Tout.

[0028] Step 102: After determining that the power-saving fine-tuning conditions are met based on the current indoor temperature value and the current outdoor temperature value, perform proportional-derivative (PD) calculation based on the current first temperature difference, the current second temperature difference, and the current third temperature difference to obtain the current frequency adjustment value. The current first temperature difference is the difference between the current indoor temperature value and the target temperature value, the current second temperature difference is the difference between the current indoor temperature value and the previous indoor temperature value, and the current third temperature difference is the difference between the current outdoor temperature value and the previous outdoor temperature value.

[0029] In this embodiment, the first temperature difference is the difference between the indoor temperature and the target temperature. Specifically, when the air conditioner is in cooling mode, the first temperature difference ΔT = indoor temperature Tao - target temperature Ts; and when the air conditioner is in heating mode, the first temperature difference ΔT = Ts - Tao. Regardless of whether the air conditioner is in heating or cooling mode, once the indoor temperature approaches the set temperature and remains so for a period of time, it indicates that the air conditioner compressor no longer needs to operate at high frequency, and the system can enter the intelligent power-saving mode of this embodiment. At this time, the compressor operating frequency may be fine-tuned based on changes in both the indoor and outdoor temperatures over a period of time.

[0030] Because air conditioners periodically or in real-time acquire indoor and outdoor temperature values ​​for the area they operate in, they can obtain the current indoor temperature value (Tao) and the current outdoor temperature value (Tout) at each acquisition time. The previously acquired indoor and outdoor temperatures are then recorded as the previous indoor and outdoor temperatures. This allows us to calculate the current second and third temperature differences. By analyzing these second and third temperature differences over a period of time, we can determine the changes in indoor and outdoor temperatures and subsequently fine-tune the compressor's operating frequency.

[0031] In some embodiments, if the current first temperature difference corresponding to the current operating mode within a first set time period is less than or equal to the first set value, and if the absolute value of the corresponding current second temperature difference within a second set time period ending at the current time is less than or equal to the second set value, and the absolute value of the corresponding current third temperature difference is less than or equal to the third set value, it indicates that the indoor and outdoor ambient temperatures are stabilizing, and the compressor's operating frequency may not need to be adjusted. However, if within the second set time period ending at the current time, there is one or more current second temperature differences whose absolute value is greater than the second set value, or one or more current third temperature differences whose absolute value is greater than the third set value, then the compressor's operating frequency can be adjusted. Therefore, determining that the energy-saving fine-tuning condition is met based on the current indoor temperature value and the current outdoor temperature value includes: if the current first temperature difference corresponding to the current operating mode within a first set time period is less than or equal to the first set value, and if within the second set time period ending at the current time, there is one or more current second temperature differences whose absolute value is greater than the second set value, or one or more current third temperature differences whose absolute value is greater than the third set value, then the energy-saving fine-tuning condition is met.

[0032] The first set time can be less than or equal to the second set time. For example, the first set time can be 1, 2, or 3 minutes, while the second set time can be 2, 3, or 5 minutes, etc. The first set value can be greater than or equal to the second set value, and the first set value can also be greater than, equal to, or less than the third set value. For example, the first set value can be 2℃ or 3℃, the second set value can be 1.5℃ or 2℃, and the third set value can be 2℃ or 2.5℃. Thus, if the current operating mode is cooling mode, ΔT = Tao – Ts. If ΔT ≤ 2℃, and within 2 minutes, each sampling yields a current first temperature difference ΔT that is less than or equal to 2℃, that is, ΔT ≤ 2℃ for a continuous period of 2 minutes. At this point, within 3 minutes (ending from the current time), if the absolute value of the difference between the current indoor temperature value obtained from each sampling and the previous indoor temperature value (i.e., the absolute value of the current second temperature difference, |△Tao|) ≤ 1.5℃, and the absolute value of the difference between the current outdoor temperature value obtained from each sampling and the previous outdoor temperature value (i.e., the absolute value of the current second temperature difference, |△Tout|) ≤ 2℃, it indicates that both indoor and outdoor ambient temperatures are stabilizing, and the compressor's operating frequency may not need adjustment. However, if one, two, or more |△Tao| > 1.5℃ within these 3 minutes, the energy-saving fine-tuning condition can be determined to be met. Alternatively, if one, two, or more |△Tout| > 2℃ within these 3 minutes, the energy-saving fine-tuning condition can also be determined to be met.

[0033] If the current operating mode is cooling mode, ΔT = Ts – Tao. If ΔT ≤ 2℃, and within 2 minutes, the current first temperature difference ΔT obtained from each sampling is less than or equal to 2℃ (i.e., ΔT ≤ 2℃ for 2 minutes), then within 3 minutes ending at the current time, if the absolute value of the current second temperature difference |ΔTao| ≤ 1.5℃ and the absolute value of the current second temperature difference |ΔTout| ≤ 2℃, it can be determined that both indoor and outdoor ambient temperatures tend to be stable, and the compressor's operating frequency may not need adjustment. However, if within these 3 minutes, one, two, or more |ΔTao| > 1.5℃, it can be determined that the energy-saving fine-tuning condition is met. Alternatively, if within these 3 minutes, one, two, or more |ΔTout| > 2℃, it can also be determined that the energy-saving fine-tuning condition is met.

[0034] Once the energy-saving fine-tuning conditions are met, a proportional-derivative (PD) operation can be performed based on the current first temperature difference, the current second temperature difference, and the current third temperature difference to obtain the current frequency adjustment value. In some embodiments, obtaining the current frequency adjustment value includes: performing a proportional-derivative (PD) operation based on formula (1) using the current first temperature difference ΔT, the current second temperature difference ΔTao, the current third temperature difference ΔTout, and the indoor heat source disturbance coefficient D to obtain the current frequency adjustment value. ; (1) in, Kp is the time weighting coefficient, K1 is the indoor temperature change coefficient, K2 is the outdoor temperature change coefficient, Kp is the proportional coefficient, and Kd is the differential coefficient.

[0035] In some embodiments, the heat generation power of all non-air conditioning components, such as people, equipment, and sunlight, can be converted into an equivalent air conditioning rated power ratio. The real-time active power P_real of the air conditioner can be obtained from the current operating current and voltage of the air conditioner. Furthermore, based on the stored correspondence between the compressor frequency f and the air conditioner's self-consumption power under zero heat load conditions in the laboratory, the current air conditioner self-consumption power P_base(f) corresponding to the current operating frequency of the air conditioner compressor can be obtained. The fan power consumption P_fan can also be obtained from the stored air conditioning equipment information. Thus, the external heat source power P_heat = P_real – P_base(f) – P_fan, after normalization, the heat source disturbance coefficient D = P_heat / P_rated is obtained, where P_rated is the rated power of the air conditioner.

[0036] w is the time weighting coefficient, where the value of w ranges from [1.0, 1.1] during the day and from [0.8, 0.9] at night. For example, if the current time is 10:00, w = 1.08, and if the current time is 23:00, w = 0.85. k1 is the indoor temperature change coefficient, which amplifies or reduces the impact of indoor temperature changes on the frequency; k2 is the outdoor temperature change coefficient, which amplifies or reduces the impact of outdoor temperature changes on the frequency. In some embodiments, k1, k2, Kp, and Kd can be preset according to air conditioning performance, the region, and the season, or they can be set according to user needs.

[0037] In this way, the real-time active power P_real is obtained, and the corresponding indoor heat source disturbance coefficient D is obtained. Then, based on the current first temperature difference ΔT, the current second temperature difference ΔTao, the current third temperature difference ΔTout, and the indoor heat source disturbance coefficient D, the proportional-differential PD calculation is performed according to formula (1) to obtain the current frequency adjustment value. .

[0038] Step 103: Adjust the value according to the current frequency to control the operation of the air conditioner compressor.

[0039] In some embodiments, controlling the operation of the air conditioning compressor includes: obtaining the current operating frequency of the air conditioning compressor; if the current frequency adjustment value is greater than the adjustment threshold, determining the sum of the current operating frequency and the current frequency adjustment value as the current operating frequency, and performing corresponding compressor control; if the current frequency adjustment value is less than or equal to the adjustment threshold, continuing to perform corresponding compressor control based on the current operating frequency.

[0040] The adjustment threshold can be 1, 2, or 3. If Δf > the adjustment threshold, such as 2, it indicates that the indoor temperature is unstable and the compressor frequency needs to be adjusted. In this case, the current operating frequency f and the current frequency adjustment value Δf are compared to obtain the adjusted operating frequency, which is then replaced with the new current operating frequency f. If Δf ≤ 2, the current operating frequency can be maintained unchanged.

[0041] As can be seen, in this embodiment of the present disclosure, when the air conditioner determines that the energy-saving conditions are met based on the current indoor temperature and the current outdoor temperature, it can obtain the corresponding current frequency adjustment value through PD calculation based on the temperature difference between the room temperature and the target temperature, as well as the changes in indoor and outdoor temperatures. In this way, the compressor can be controlled accordingly. In this way, without adding hardware sensors, the traditional method of only looking at the instantaneous temperature difference can be upgraded to feedforward control that predicts the temperature trend. This allows the compressor to obtain the accurate current frequency adjustment value in advance, thereby eliminating frequent frequency increases and decreases after reaching the temperature. The number of times the whole machine starts and stops is also greatly reduced, further reducing power consumption. Users can directly enjoy the integrated value-added experience of constant temperature, quiet operation, and energy saving without replacing the equipment, further improving the user experience.

[0042] To further improve energy efficiency, in this embodiment of the invention, one or both of the indoor and outdoor fans can be linked for energy-saving control. Therefore, in some embodiments, when the current operating frequency remains unchanged within a third set time period, and the current first temperature difference is under the outdoor unit control condition matching the current monitoring count, the first current fan speed of the outdoor fan is reduced according to the set downshift value, and corresponding outdoor fan control is performed; and / or, when the current operating frequency remains unchanged within a third set time period, and the current first temperature difference is under the indoor unit control condition matching the current monitoring count, the second current fan speed of the indoor fan is increased according to the set upshift value, and corresponding indoor fan control is performed.

[0043] Regardless of whether the air conditioner is currently in cooling or heating mode, the intelligent energy-saving function of the air conditioner will be activated based on the current operating mode. At this time, the operating frequency of the compressor can be controlled according to the current indoor and outdoor temperatures. It is also possible to control one or both of the outdoor and indoor fans according to the current indoor and outdoor temperatures.

[0044] The monitoring time can be divided into continuous monitoring window times, and each monitoring window time can be gradually increased, for example, 10×Nmin or 20×Nmin, where N is an integer greater than or equal to 1, which is the current monitoring number. In this way, when the current operating frequency of the compressor remains unchanged within the third set time, it is continued to determine whether the current first temperature difference value meets the corresponding outdoor unit control conditions within the current monitoring window time.

[0045] If the current operating mode is cooling mode, within the current monitoring window time, if the first current temperature difference value acquired after each acquisition meets the outdoor unit control condition corresponding to the cooling mode, such as -3≤ΔT≤1, where ΔT = current indoor temperature value Tao - target temperature value Ts, it can be determined that the outdoor fan needs to be reduced in speed. The monitoring time is divided into continuous monitoring window time, so each monitoring window time corresponds to a monitoring number. Here, the reduction value of the outdoor fan speed can be related to the monitoring number, that is, the current reduction value = R1×Nr / min, where R1 can be 5, 10, or 20, etc., and N is the current monitoring number. R1×N has an upper limit value, such as the current reduction value can be the smaller value between R1*N and 60.

[0046] If the current operating mode is heating mode, within the current monitoring window time, if the first current temperature difference value obtained after each acquisition meets the outdoor unit control conditions corresponding to the heating mode, such as -3≤ΔT≤1, ΔT=Ts-Tao, it can be determined that the outdoor fan needs to be reduced in speed. Similarly, the reduction value of the outdoor fan speed can be related to the number of monitoring, that is, the current reduction value = R1×Nr / min, where R can be 5, 10, or 20, etc., and R1×N has an upper limit value. For example, the current reduction value can be the smaller value between R1×N and 60.

[0047] In some embodiments, if the current operating frequency remains unchanged within the third set time period, it can be further determined whether the current first temperature difference meets the indoor unit control conditions within the current monitoring window time period.

[0048] If the current operating mode is cooling mode, within the current monitoring window time, if the first current temperature difference value obtained after each acquisition meets the indoor unit control conditions corresponding to the cooling mode, such as -1≤ΔT≤2, ΔT=Tao-Ts, it can be determined that the indoor fan needs to be upgraded. The current upgrade value = R2×Nr / min, where 2R can be 5, 10, or 15, etc., and N is the current monitoring number. R2×N has an upper limit value. For example, the current downgrade value can be the smaller value between R2×N and 45.

[0049] If the current operating mode is heating mode, within the current monitoring window time, if the first current temperature difference value obtained after each acquisition meets the indoor unit control conditions corresponding to the heating mode, such as -1≤ΔT≤2, ΔT=Ts-Tao, it can be determined that the indoor fan needs to be upgraded. The current downgrade value = R2×Nr / min, where R2 can be 5, 10, or 15, etc., and R2×N has an upper limit value. For example, the current downgrade value can be the smaller value between R2×N and 45.

[0050] In some embodiments, increasing the second current fan speed of the indoor fan according to the current upgrade value matched with the current monitoring count includes: when the second current fan speed is neither the preset silent mode speed nor the lowest speed, increasing the second current fan speed of the indoor fan according to the current upgrade value matched with the current monitoring count. That is, before controlling the indoor fan to upgrade, it is necessary to first determine whether the indoor fan speed corresponds to the silent mode or the low speed; if so, no correction is made. This reduces the probability of repeated speed changes and prioritizes user selection, further improving the user experience.

[0051] As can be seen, in this embodiment of the present disclosure, the air conditioner can form a linkage control of two or three of the following: compressor frequency fine-tuning, outdoor fan speed reduction, and indoor fan speed increase. This forms a stepped energy-saving chain, which can upgrade the traditional independent adjustment of a single component to a three-dimensional synchronous feedforward to feedback composite control of compressor-outdoor air-indoor air without adding any hardware. This allows for the immediate elimination of redundant power consumption of the outdoor air and the rapid convergence of the lag temperature difference of the indoor air. As a result, the whole unit can save power and reduce noise within the constant temperature bandwidth. Users can directly enjoy a super-wide screen-level value-added experience of quieter outdoor unit, more uniform indoor unit, and more energy-saving whole unit without replacing the equipment, further improving user satisfaction.

[0052] The following describes the operation process in a specific embodiment, illustrating the air conditioning control process provided by the embodiments of the present invention.

[0053] In one embodiment of this disclosure, the first set time is 2 minutes, the second set time is 3 minutes, the first set value is 2°C, the second set value is 1.5°C, the third set value is 2°C, and the adjustment threshold is 2 Hz.

[0054] Figure 2 This is a flow diagram illustrating an air conditioning control method provided in an embodiment of this disclosure. (In conjunction with...) Figure 2 The process used for air conditioning control includes: Step 201: Upon reaching the preset sampling time, the air conditioner acquires the current indoor temperature value and the current outdoor temperature value, and obtains the current first temperature difference value ΔT that matches the current operating mode of the air conditioner.

[0055] When the current operating mode is cooling mode, ΔT = current indoor temperature value Tao - target temperature value Ts; when the current operating mode is heating mode, ΔT = Ts - Tao. The target temperature value Ts can be preset by the user via remote control or remote control, or it can be determined by the air conditioner through self-learning based on current environmental parameters and air conditioner performance.

[0056] Step 202: Determine if ΔT≤2℃ is true. If yes, proceed to step 203; otherwise, proceed to step 211.

[0057] Step 203: Determine whether the first duration corresponding to ΔT≤2℃ is greater than or equal to 2min. If yes, proceed to step 204; otherwise, return to step 201.

[0058] Step 204: Determine if |ΔTao|≤1.5℃ is true. If yes, proceed to step 205; otherwise, proceed to step 207.

[0059] Wherein, the current second temperature difference ΔTao = current indoor temperature value - previous indoor temperature value.

[0060] Step 205: Determine if |ΔTout|≤2℃ is true. If yes, proceed to step 206; otherwise, proceed to step 207.

[0061] Wherein, the current third temperature difference ΔTout = current outdoor temperature value - previous outdoor temperature value.

[0062] Step 206: Determine whether the second duration corresponding to |ΔTao|≤1.5℃ and |ΔTao|≤2℃ is greater than or equal to 3min? If yes, proceed to step 210; otherwise, return to step 201.

[0063] Step 207: Based on the current first temperature difference ΔT, the current second temperature difference ΔTao, the current third temperature difference ΔTout, and the indoor heat source disturbance coefficient D, perform proportional-derivative (PD) calculation according to formula (1) to obtain the current frequency adjustment value. .

[0064] Step 208: Determine Is >2Hz true? If yes, proceed to step 209; otherwise, proceed to step 210.

[0065] Step 209: The air conditioner compares the compressor's current operating frequency with... The sum of the values ​​is used to determine the current operating frequency, and the corresponding compressor control is then performed. Return to step 201.

[0066] Step 210: The air conditioner continues to maintain the current operating frequency of the compressor and performs corresponding compressor control. Return to step 201.

[0067] Step 211: The air conditioner is in the current mode operation state, and the first duration and the second duration are cleared to zero. Return to step 201.

[0068] This means the air conditioner has exited the power-saving fine-tuning mode and resumed normal PID control.

[0069] As can be seen, in this embodiment, after the air conditioner reaches the sampling time, it first uses |ΔT|≤2℃ and lasts for 2 minutes as a steady-state gate, and then superimposes a rate-of-change gate with |ΔTao|≤1.5℃ and |ΔTout|≤2℃ and lasts for 3 minutes. This upgrades the traditional single-point temperature difference triggering to a triple filter of temperature difference, rate of change, and duration. In this way, without adding sensors, the system can be accurately locked from the frequent start-stop zone to the frequency-stabilized zone, so that the PD operation is only awakened when it is really needed. This allows the compressor to obtain a fine-tuning amount of |Δf|≤2Hz in advance, which greatly reduces the number of times the whole machine increases or decreases frequency, further increases the proportion of stable frequency operation, saves power consumption, and further improves user product satisfaction.

[0070] In one embodiment of this disclosure, the energy-saving fine-tuning mode of the air conditioner can also adjust the speed of the outdoor fan. In this embodiment, the first set time is 2 minutes, the second set time is 3 minutes, and the third set time can be 20 minutes, with a downshift value of 20 × Nr / min.

[0071] Figure 3 This is a flow diagram illustrating an air conditioning control method provided in an embodiment of this disclosure. (In conjunction with...) Figure 3 The process used for air conditioning control includes: Step 301: Upon reaching the preset sampling time, the air conditioner acquires the current indoor temperature value and the current outdoor temperature value, and obtains the current first temperature difference value ΔT that matches the current operating mode of the air conditioner.

[0072] When the current operating mode is cooling mode, ΔT = current indoor temperature value Tao - target temperature value Ts; when the current operating mode is heating mode, ΔT = Ts - Tao.

[0073] Step 302: Determine if ΔT≤2℃ is true. If yes, proceed to step 303; otherwise, proceed to step 309.

[0074] Step 303: Determine whether the first duration corresponding to ΔT≤2℃ is greater than or equal to 2min. If yes, proceed to step 304; otherwise, return to step 301.

[0075] Step 304: Has the compressor maintained its current operating frequency for the third duration reached 20 minutes? If yes, proceed to step 305; otherwise, return to step 301.

[0076] Step 305: Determine whether -3≤ΔT≤1 holds true within the time interval N×20 min. If true, proceed to step 306; otherwise, proceed to step 308.

[0077] When the current operating mode is cooling mode, if -3 ≤ Tao-Ts ≤ 1 within the time period N × 20 min, then step 306 is executed. When the current operating mode is heating mode, if -1 ≤ Tao-Ts ≤ 3 within the time period N × 20 min, then step 306 is executed. Here, N is the current monitoring count, which is an integer greater than or equal to 1.

[0078] Step 306: The air conditioner determines the smaller value between 20×Nr / min and 60r / min as the current downshift value, and determines the new first current fan speed by the difference between the first current fan speed of the outdoor fan and the current downshift value, and performs corresponding outdoor fan control.

[0079] Step 307: The air conditioner will switch to N+1 and return to step 301.

[0080] Step 308: The air conditioner automatically controls the outdoor fan and resets N to 1.

[0081] This means that the air conditioner has stopped controlling the outdoor fan for energy saving and has returned to controlling the outdoor fan based on factors such as condensing temperature and ambient temperature in the relevant technologies.

[0082] Step 309: The air conditioner is in the current mode operation state, and the first duration is cleared to zero. Return to step 301.

[0083] This means the air conditioner has exited the power-saving fine-tuning mode and resumed normal PID control in the relevant technology.

[0084] As can be seen, in this embodiment, after the air conditioner reaches the sampling time, it first uses |ΔT|≤2℃ and lasts for 2 minutes as a steady-state gate, and then superimposes an N×20min temperature difference interval lock, upgrading the outdoor fan speed reduction timing from high-pressure threshold triggering to steady-state, interval, step, and triple filtration; thus, without adding a condensing pressure sensor, the traditional high-pressure i.e. high-speed can be upgraded to feedforward energy saving of stable frequency i.e. reduced airflow, further reducing the average speed of the outdoor fan to at most 60 r / min, saving the annual power consumption of the whole unit again, and the condensing temperature is still lower than the protection value, further improving user product satisfaction.

[0085] Of course, the above-mentioned compressor frequency energy-saving fine-tuning process and outdoor fan speed energy-saving fine-tuning process of the air conditioner can be run in parallel. That is, when it is determined that the energy-saving fine-tuning conditions are met based on the current indoor temperature value and the current outdoor temperature value, the compressor operating frequency and outdoor fan speed are adjusted accordingly based on the current first temperature difference, the current second temperature difference, and the current third temperature difference to save the energy consumption of the whole machine.

[0086] In one embodiment of this disclosure, the energy-saving fine-tuning mode of the air conditioner can also adjust the indoor fan speed. In this embodiment, the first set time is 2 minutes, the second set time is 3 minutes, and the third set time can be 20 minutes, with an increment value of 20 × Nr / min.

[0087] Figure 4 This is a flow diagram illustrating an air conditioning control method provided in an embodiment of this disclosure. (In conjunction with...) Figure 4 The process used for air conditioning control includes: Step 401: Upon reaching the preset sampling time, the air conditioner acquires the current indoor temperature value and the current outdoor temperature value, and obtains the current first temperature difference value ΔT that matches the current operating mode of the air conditioner.

[0088] When the current operating mode is cooling mode, ΔT = current indoor temperature value Tao - target temperature value Ts; when the current operating mode is heating mode, ΔT = Ts - Tao.

[0089] Step 402: Determine if ΔT≤2℃ is true. If yes, proceed to step 403; otherwise, proceed to step 410.

[0090] Step 403: Determine whether the first duration corresponding to ΔT≤2℃ is greater than or equal to 2min. If yes, proceed to step 404; otherwise, return to step 401.

[0091] Step 404: Determine if the second current fan speed of the indoor fan is the set fan speed. If yes, proceed to step 409; otherwise, proceed to step 405.

[0092] Among them, the wind speed can be set to the preset silent mode wind speed, the lowest wind speed, or the user-defined locked wind speed, etc.

[0093] Step 405: Has the compressor maintained its current operating frequency for the third duration reached 20 minutes? If yes, proceed to step 406; otherwise, return to step 401.

[0094] Step 406: Determine whether -1≤ΔT≤2 holds true within the time interval N×20 min. If true, proceed to step 407; otherwise, proceed to step 409.

[0095] When the current operating mode is cooling mode, if -1 ≤ Tao-Ts ≤ 2 within the time period N × 20 min, then step 407 is executed. When the current operating mode is heating mode, if -2 ≤ Tao-Ts ≤ 1 within the time period N × 20 min, then step 407 is executed. Here, N is the current monitoring count, which is an integer greater than or equal to 1.

[0096] Step 407: The air conditioner determines the smaller value between 15×Nr / min and 45r / min as the current upgrade value, and determines the new first current fan speed by the difference between the first current fan speed of the indoor fan and the current upgrade value, and performs corresponding indoor fan control.

[0097] Step 408: The air conditioner will switch to N+1 and return to step 401.

[0098] Step 409: The air conditioner automatically controls the indoor fan and resets N to 1.

[0099] This means that the air conditioner has stopped controlling the indoor fan for energy saving and has returned to controlling the indoor fan based on factors such as condensing temperature and ambient temperature.

[0100] Step 410: The air conditioner is in the current mode operation state, and the first duration is cleared to zero. Return to step 401.

[0101] This means the air conditioner has exited the power-saving fine-tuning mode and resumed normal PID control in the relevant technology.

[0102] As can be seen, in this embodiment, after the air conditioner reaches the sampling time, it first uses |ΔT|≤2℃ and lasts for 2 minutes as a steady-state gate, and then superimposes N×15min temperature difference interval lock, upgrading the indoor fan speed-up timing from temperature difference-based speed-up to a triple filtration of steady state, interval, and step. In this way, without adding a wind speed sensor, the traditional fixed setting or temperature difference-based speed-up can be upgraded to a silent setting that is absolutely quiet and a feedforward temperature uniformity that is frequency-stable uniform airflow. This makes the average speed of the indoor fan increase by a maximum of 45r / min, reduces the airflow gradient, and further reduces room temperature fluctuation by 0.2℃. The silent setting is imperceptible to the user, and the annual power consumption of the whole unit is further reduced, which also further improves the user's satisfaction with the product.

[0103] Of course, the aforementioned energy-saving fine-tuning processes for the air conditioner's compressor frequency, outdoor fan speed, and indoor fan speed can operate in parallel. That is, after determining that the energy-saving fine-tuning conditions are met based on the current indoor temperature value, the compressor operating frequency, outdoor fan speed, and indoor fan speed are adjusted accordingly based on the current first temperature difference, second temperature difference, and third temperature difference to save overall energy consumption. Alternatively, the aforementioned energy-saving fine-tuning processes for the air conditioner's compressor frequency and indoor fan speed can operate in parallel, or the aforementioned energy-saving fine-tuning processes for the outdoor fan speed and indoor fan speed can operate in parallel. Specific examples will not be provided here.

[0104] Based on the above process for air conditioning control, a device for air conditioning control can be constructed.

[0105] Figure 5This is a schematic diagram of a structure for an air conditioning control device provided in an embodiment of this disclosure. Figure 5 As shown, the air conditioning control device 500 includes: an acquisition module 510, a determination module 520, and a first control module 530.

[0106] The acquisition module 510 is configured to acquire the current indoor temperature value and the current outdoor temperature value corresponding to the area where the air conditioner is in operation.

[0107] The determination module 520 is configured to, when determining that the power-saving fine-tuning conditions are met based on the current indoor temperature value and the current outdoor temperature value, perform proportional-derivative (PD) calculations based on the current first temperature difference, the current second temperature difference, and the current third temperature difference to obtain the current frequency adjustment value. Here, the current first temperature difference is the difference between the current indoor temperature value and the target temperature value, the current second temperature difference is the difference between the current indoor temperature value and the previous indoor temperature value, and the current third temperature difference is the difference between the current outdoor temperature value and the previous outdoor temperature value.

[0108] The first control module 530 is configured to control the operation of the air conditioning compressor based on the current frequency adjustment value.

[0109] In some embodiments, the determining module 520 includes: The first determining unit is configured to determine that the power-saving fine-tuning condition is met if, within a first set time period, the absolute value of one or more current second temperature differences that match the current operating mode is less than or equal to the first set value, or if the absolute value of one or more current third temperature differences is greater than the third set value within a second set time period with the current time as the end time.

[0110] In some embodiments, the determining module 520 includes: The second determining unit is configured to perform proportional-differential (PD) calculation based on formula (1) according to the current first temperature difference ΔT, the current second temperature difference ΔTao, the current third temperature difference ΔTout, and the indoor heat source disturbance coefficient D, to obtain the current frequency adjustment value. ; (1) in, Kp is the time weighting coefficient, K1 is the indoor temperature change coefficient, K2 is the outdoor temperature change coefficient, Kp is the proportional coefficient, and Kd is the differential coefficient.

[0111] In some embodiments, the first control module 530 is specifically configured to obtain the current operating frequency of the air conditioner compressor; if the current frequency adjustment value is greater than the adjustment threshold, determine the sum of the current operating frequency and the current frequency adjustment value as the current operating frequency and perform corresponding compressor control; if the current frequency adjustment value is less than or equal to the adjustment threshold, continue to perform corresponding compressor control according to the current operating frequency.

[0112] In some embodiments, it also includes: The second control module is configured to reduce the first current fan speed of the outdoor fan and perform corresponding outdoor fan control when the current first temperature difference value is at the outdoor unit control condition that matches the current monitoring number, while the current operating frequency remains unchanged within a third set time period.

[0113] The third control module is configured to, under the condition that the current operating frequency remains unchanged within a third set time period and the current first temperature difference is within the indoor unit control conditions that match the current monitoring count, increase the second current fan speed of the indoor fan according to the current upgrade value that matches the current monitoring count, and perform corresponding indoor fan control.

[0114] In some embodiments, the third control module is further configured to increase the second current fan speed of the indoor fan according to the current upgrade value matching the current monitoring count, when the second current fan speed is neither the preset silent mode speed nor the lowest mode speed.

[0115] In some embodiments, it also includes: The fourth control module is configured to perform corresponding air conditioning control based on the first temperature difference if it is determined that the energy-saving fine-tuning conditions are not met based on the current indoor temperature value and the current outdoor temperature value.

[0116] The control process of the air conditioning control device provided in the embodiments of the present invention will be illustrated below with reference to specific embodiments.

[0117] In one embodiment of this disclosure, the air conditioning control device is applied to an air conditioner. The first set time is 2 minutes, the second set time is 3 minutes, and the third set time can be 20 minutes. The first set value is 2°C, the second set value is 1.5°C, the third set value is 2°C, the adjustment threshold is 2Hz, the downshift value is 20×Nr / min, and the upshift value is 20×Nr / min.

[0118] Figure 6 This is a schematic diagram of a structure for an air conditioning control device provided in an embodiment of this disclosure. (In conjunction with...) Figure 3 and Figure 6The air conditioning control device 500 includes: an acquisition module 510, a determination module 520, a first control module 530, a second control module 540, a third control module 540, and a fourth control module 550, wherein the determination module 520 includes: a first determination unit 521 and a second determination unit 522.

[0119] Upon reaching the preset sampling time, the acquisition module 510 acquires the current indoor temperature value and the current outdoor temperature value, and obtains the current first temperature difference value ΔT that matches the current operating mode of the air conditioner. Specifically, when the current operating mode is cooling mode, ΔT = Tao - Ts; when the current operating mode is heating mode, ΔT = Ts - Tao.

[0120] Thus, ΔT≤2℃ is always true within 2 minutes, and │ΔTao│>1.5℃ or │ΔTout│>2℃ exists within 3 minutes. Here, the current second temperature difference ΔTao = current indoor temperature value - previous indoor temperature value, and the current third temperature difference ΔTout = current outdoor temperature value - previous outdoor temperature value. At this time, the first determining module 521 in determining module 520 determines that the power-saving fine-tuning condition is met. Therefore, the second determining unit 522 performs proportional-derivative (PD) calculation based on formula (1) according to the current first temperature difference ΔT, the current second temperature difference ΔTao, the current third temperature difference ΔTout, and the indoor heat source disturbance coefficient D, to obtain the current frequency adjustment value. And in When the frequency is >2Hz, the first control module 530 will compare the compressor's current operating frequency with... The sum of the values ​​is used to determine the current operating frequency, and the corresponding compressor is controlled accordingly.

[0121] And within 3 minutes, ≤1.5℃ and |ΔTao|≤2℃ both hold true, or When the frequency is ≤2Hz, the first control module 530 continues to maintain the current operating frequency of the compressor and performs corresponding compressor control.

[0122] If ΔT≤2℃ is consistently true within 2 minutes, and the air conditioner continues to maintain the current operating frequency of the compressor for 20 minutes, the outdoor and indoor fans can also be linked for energy-saving fine-tuning control. Specifically, if -3≤ΔT≤1 is consistently true within N×20 minutes, the second control module 540 can determine the smaller value between 20×Nr / min and 60r / min as the current downgrade value, and determine the new first current fan speed by the difference between the first current fan speed of the outdoor fan and the current downgrade value, and perform corresponding outdoor fan control. Here, N is the current monitoring number, which is an integer greater than or equal to 1.

[0123] Furthermore, when the second current fan speed of the indoor fan is not the set speed, within a time period of N×20 minutes, -1≤ΔT≤2, combined with the outdoor fan control, i.e., -1≤ΔT≤1 always holds true, the third control module 550 determines the smaller value between 15×Nr / min and 45r / min as the current upgrade value, and determines the new first current fan speed by the difference between the first current fan speed of the indoor fan and the current upgrade value, and performs corresponding indoor fan control. Here, N is the current monitoring count, an integer greater than or equal to 1, and the set speed is the preset silent speed, the lowest speed, or the user-set locked speed, etc.

[0124] Of course, when ΔT>2℃, the fourth control module 560 can save the current operating mode of the air conditioner, that is, restore the normal PID control in the relevant technology.

[0125] As can be seen, in this embodiment, the device for air conditioning control can incorporate the compressor, outdoor fan, and indoor fan into the same predictive PD closed-loop control based on four-dimensional parameters such as temperature difference, rate of change, heat source, and time. This transforms the temperature change rate and heat source disturbance information into calculable energy-saving control quantities. In this way, without increasing any sensor or hardware costs, the traditional frequent start-stop upon reaching the set temperature can be upgraded to an intelligent energy-saving mode with advance prediction, three-dimensional linkage, and step-by-step energy reduction. As a result, the overall energy consumption of the unit is significantly reduced, the number of compressor start-stop cycles is greatly reduced, and room temperature fluctuations are further reduced. This also reduces the probability of excessively cold or hot conditions at night. Users can directly enjoy the triple benefits of quiet operation, energy saving, and constant temperature without replacing the equipment, significantly reducing the costs associated with ecological migration and after-sales service.

[0126] This disclosure provides an embodiment of an air conditioning control device 700, the structure of which is as follows: Figure 7 As shown, it includes: The processor 1000 and memory 1001 may further include a communication interface 1002 and a bus 1003. The processor 1000, communication interface 1002, and memory 1001 can communicate with each other via the bus 1003. The communication interface 1002 can be used for information transmission. The processor 1000 can call logical instructions stored in the memory 1001 to execute the air conditioning control method described in the above embodiment.

[0127] Furthermore, the logic instructions in the aforementioned memory 1001 can be implemented as software functional units and, when sold or used as independent products, can be stored in a computer-readable storage medium.

[0128] The memory 1001, as a computer-readable storage medium, can be used to store software programs and computer-executable programs, such as program instructions / modules corresponding to the methods in the embodiments of this disclosure. The processor 1000 executes functional applications and data processing by running the program instructions / modules stored in the memory 1001, that is, it implements the method for air conditioning control in the above method embodiments.

[0129] The memory 1001 may include a program storage area and a data storage area. The program storage area may store the operating system and applications required for at least one function; the data storage area may store data created based on the use of the terminal device. Furthermore, the memory 1001 may include high-speed random access memory and may also include non-volatile memory.

[0130] This disclosure provides an air conditioning control device, including: a processor and a memory storing program instructions, wherein the processor is configured to execute an air conditioning control method when executing the program instructions.

[0131] This disclosure provides an air conditioner, such as... Figure 8 As shown, the device includes: a device body 800, and the aforementioned air conditioning control device 500 (700) is installed in the device body 800. The installation relationship described herein is not limited to placement within the product, but also includes installation connections with other components of the product, including but not limited to physical connections, electrical connections, or signal transmission connections. Those skilled in the art will understand that the air conditioning control device 500 (700) can be adapted to suitable corresponding device bodies to achieve other feasible embodiments.

[0132] This disclosure provides a storage medium storing program instructions that, when executed, perform the method for air conditioning control as described above.

[0133] This disclosure provides a computer program product, which includes a computer program stored on a storage medium. The computer program includes program instructions, which, when executed by a computer, cause the computer to perform the above-described air conditioning control method.

[0134] The aforementioned storage medium can be a transient computer-readable storage medium or a non-transitory computer-readable storage medium.

[0135] The technical solutions of this disclosure can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes one or more 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 method described in this disclosure. The aforementioned storage medium can be a non-transitory storage medium, including: a USB flash drive, a portable hard drive, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk, and other media capable of storing program code; it can also be a transient storage medium.

[0136] The foregoing description and accompanying drawings fully illustrate embodiments of the present disclosure to enable those skilled in the art to practice them. Other embodiments may include structural, logical, electrical, procedural, and other changes. The embodiments represent only possible variations. Individual components and functions are optional unless explicitly required, and the order of operation may vary. Parts and features of some embodiments may be included or replace parts and features of other embodiments. The scope of the embodiments of this disclosure includes the entire scope of the claims and all available equivalents of the claims. While the terms “first,” “second,” etc., may be used in this application to describe elements, these elements should not be limited by these terms. These terms are used only to distinguish one element from another. For example, a first element may be called a second element without changing the meaning of the description, and similarly, a second element may be called a first element, provided that all occurrences of “first element” are consistently renamed and all occurrences of “second element” are consistently renamed. First and second elements are both elements, but may not be the same element. Moreover, the terminology used in this application is only for describing embodiments and is not intended to limit the claims. As used in the description of the embodiments and claims, unless the context clearly indicates otherwise, the singular forms “a,” “an,” and “the” are intended to also include the plural forms. Similarly, the term “and / or” as used herein means including one or more of the associated listed any and all possible combinations. Additionally, when used herein, the terms “comprise” and its variations “comprises” and / or “comprising” refer to the presence of stated features, integrals, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components, and / or groups thereof. Without further limitations, an element defined by the phrase “comprising an…” does not exclude the presence of additional identical elements in the process, method, or apparatus that includes said element. In this document, each embodiment may focus on the differences from other embodiments, and similar or identical parts between embodiments can be referred to mutually. For methods, products, etc., disclosed in the embodiments, if they correspond to the method section disclosed in the embodiments, the relevant parts can be referred to the description of the method section.

[0137] Those skilled in the art will recognize that the units and algorithm steps of the various examples described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are implemented in hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of the embodiments of this disclosure. Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the specific working processes of the systems, devices, and units described above can be referred to the corresponding processes in the foregoing method embodiments, and will not be repeated here.

[0138] The methods and products disclosed in the embodiments herein (including but not limited to devices and equipment) can be implemented in other ways. For example, the device embodiments described above are merely illustrative. For instance, the division of units may be merely a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. In addition, the mutual coupling or direct coupling or communication connection shown or discussed may be through some interfaces, and the indirect coupling or communication connection of devices or units may be electrical, mechanical, or other forms. The units described as separate components may or may not be physically separate. 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 units can be selected to implement this embodiment according to actual needs. In addition, the functional units in the embodiments of this disclosure may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

[0139] The flowcharts and block diagrams in the accompanying drawings illustrate the architecture, functionality, and operation of possible implementations of systems, methods, and computer program products according to embodiments of this disclosure. In this regard, each block in a flowchart or block diagram may represent a module, segment, or portion of code containing one or more executable instructions for implementing a specified logical function. In some alternative implementations, the functions marked in the blocks may occur in a different order than that shown in the drawings. For example, two consecutive blocks may actually be executed substantially in parallel, and they may sometimes be executed in reverse order, depending on the functions involved. In the descriptions corresponding to the flowcharts and block diagrams in the accompanying drawings, the operations or steps corresponding to different blocks may also occur in a different order than disclosed in the description, and sometimes there is no specific order between different operations or steps. For example, two consecutive operations or steps may actually be executed substantially in parallel, and they may sometimes be executed in reverse order, depending on the functions involved. Each block in a block diagram and / or flowchart, and combinations of blocks in a block diagram and / or flowchart, can be implemented using a dedicated hardware-based system that performs the specified function or action, or using a combination of dedicated hardware and computer instructions.

Claims

1. A method for controlling an air conditioner, characterized in that, include: Obtain the current indoor and outdoor temperature values ​​corresponding to the area affected by the air conditioner; If the power-saving fine-tuning conditions are met based on the current indoor temperature and the current outdoor temperature, proportional-derivative (PD) calculations are performed based on the current first temperature difference, the current second temperature difference, and the current third temperature difference to obtain the current frequency adjustment value. Here, the current first temperature difference is the difference between the current indoor temperature and the target temperature, the current second temperature difference is the difference between the current indoor temperature and the previous indoor temperature, and the current third temperature difference is the difference between the current outdoor temperature and the previous outdoor temperature. The operation of the air conditioning compressor is controlled based on the current frequency adjustment value.

2. The method according to claim 1, characterized in that, The process of determining the conditions for energy-saving fine-tuning based on the current indoor and outdoor temperatures includes: If, within a first set time period, all current first temperature differences matching the current operating mode are less than or equal to the first set value, and within a second set time period ending at the current time, there exists one or more current second temperature differences whose absolute values ​​are greater than the second set value, or there exists one or more current third temperature differences whose absolute values ​​are greater than the third set value, then the power-saving fine-tuning condition is determined to be met.

3. The method according to claim 1, characterized in that, The process of obtaining the current frequency adjustment value includes: Based on the current first temperature difference ΔT, the current second temperature difference ΔTao, the current third temperature difference ΔTout, and the indoor heat source disturbance coefficient D, the proportional-derivative (PD) operation is performed according to formula (1) to obtain the current frequency adjustment value. ; （1） in, Kp is the time weighting coefficient, K1 is the indoor temperature change coefficient, K2 is the outdoor temperature change coefficient, Kp is the proportional coefficient, and Kd is the differential coefficient.

4. The method according to claim 1, characterized in that, The step of adjusting the air conditioner compressor operation based on the current frequency adjustment value includes: Obtain the current operating frequency of the air conditioner compressor; If the current frequency adjustment value is greater than the adjustment threshold, the sum of the current operating frequency and the current frequency adjustment value is determined as the current operating frequency, and the corresponding compressor control is performed. If the current frequency adjustment value is less than or equal to the adjustment threshold, continue to control the compressor accordingly based on the current operating frequency.

5. The method according to claim 1, characterized in that, Also includes: If the current operating frequency remains unchanged within the third set time period, and the current first temperature difference is under the outdoor unit control conditions that match the current monitoring count, reduce the first current fan speed of the outdoor fan according to the current downshift value that matches the current monitoring count, and perform corresponding outdoor fan control. If the current operating frequency remains unchanged within the third set time period, and the current first temperature difference is under the indoor unit control conditions that match the current monitoring count, the second current fan speed of the indoor fan is increased according to the current upgrade value that matches the current monitoring count, and the corresponding indoor fan control is performed.

6. The method according to claim 5, characterized in that, The step of increasing the second current fan speed of the indoor fan based on the current upgrade value matched with the current monitoring count includes: If the second current fan speed is neither the preset silent mode speed nor the lowest speed, the second current fan speed of the indoor fan is increased according to the current upgrade value that matches the current monitoring count.

7. The method according to any one of claims 1-6, characterized in that, Also includes: If the current indoor and outdoor temperatures do not meet the conditions for energy-saving fine-tuning, the corresponding air conditioning control will be performed based on the first temperature difference.

8. An apparatus for controlling an air conditioner, the apparatus comprising a processor and a memory storing program instructions, characterized in that, The processor is configured to perform the method for air conditioning control as described in any one of claims 1-7 when executing the program instructions.

9. An air conditioner, characterized in that, include: Equipment body; The device for air conditioning control as described in claim 8 is installed on the device body.

10. A storage medium storing program instructions, characterized in that, When the program instructions are executed, they perform the method for air conditioning control as described in any one of claims 1-7.

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