A control method and control device of an air conditioner and the air conditioner

Abstract

The application belongs to the technical field of air conditioners, and particularly relates to an air conditioner control method, a control device and an air conditioner. The control method comprises the following steps: in a refrigeration mode, acquiring an outdoor environment temperature, an indoor environment temperature, a user set temperature and an air conditioner running time length; calculating a first temperature difference according to the indoor environment temperature and the user set temperature, and determining whether to enter an energy-saving control mode according to the first temperature difference and the air conditioner running time length; in the energy-saving control mode, calculating a second temperature difference according to the outdoor environment temperature and the indoor environment temperature, and determining an entered energy-saving mode according to the second temperature difference; in the energy-saving mode, determining an indoor environment temperature change rate according to a change condition of the first temperature difference, and determining an energy-saving control strategy in the corresponding energy-saving mode according to the outdoor environment temperature and the indoor environment temperature change rate. The application solves the problems of energy waste and user discomfort of the existing air conditioner in a long-term refrigeration mode.

Description

Technical Field

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

[0002] When an air conditioner is cooling, traditional air conditioning control algorithms often keep the room temperature below the set temperature. As the air conditioner runs for an extended period, the temperature of the room walls decreases, causing the room temperature to drop further. This results in energy waste and user discomfort. Therefore, it is necessary to address the issues of energy waste and user discomfort caused by prolonged operation in cooling mode.

[0003] In view of this, the present invention is hereby proposed. Summary of the Invention

[0004] In view of this, the present invention discloses an air conditioner control method, control device and air conditioner, to solve the problems of energy waste and user discomfort caused by existing air conditioners when they are in cooling mode for a long time.

[0005] To achieve the above objectives, the technical solution adopted by this invention is as follows:

[0006] The first aspect of this invention discloses a control method for an air conditioner, wherein the air conditioner is equipped with an energy-saving control mode, the energy-saving control mode including multiple energy-saving modes, and the control method includes:

[0007] In cooling mode, the outdoor ambient temperature, indoor ambient temperature, user-set temperature, and air conditioner running time are obtained.

[0008] The first temperature difference is calculated based on the indoor ambient temperature and the user-set temperature. The energy-saving control mode is then determined based on the first temperature difference and the air conditioner's operating time.

[0009] In the energy-saving control mode, a second temperature difference is calculated based on the outdoor ambient temperature and the indoor ambient temperature, and the energy-saving mode to be entered is determined based on the second temperature difference;

[0010] In the energy-saving mode, the rate of change of indoor ambient temperature is determined based on the change of the first temperature difference, and the energy-saving control strategy for the corresponding energy-saving mode is determined based on the change of outdoor ambient temperature and the rate of change of indoor ambient temperature.

[0011] Further optionally, the step of determining whether to enter the energy-saving control mode based on the first temperature difference and the air conditioner's operating time includes...

[0012] When the first temperature difference and the air conditioner's operating time simultaneously meet the following two conditions, P1 and P2, the energy-saving control mode is entered, wherein:

[0013] P1, First temperature difference ≤ First set value;

[0014] P2. Air conditioner running time ≥ set time.

[0015] Further optionally, the step of determining the energy-saving mode to be entered based on the second temperature difference includes...

[0016] The energy-saving mode corresponding to the second temperature difference is determined based on the pre-stored mapping relationship between the second temperature difference and the energy-saving mode in the air conditioner.

[0017] Alternatively, the operating parameters of different control objects can be adjusted under different energy-saving modes.

[0018] Further optionally, the energy-saving control mode includes a first energy-saving mode that regulates the opening of the electronic expansion valve, a second energy-saving mode that regulates the compressor frequency, and a third energy-saving mode that simultaneously regulates the opening of the electronic expansion valve and the speed of the outdoor fan. The step of determining the energy-saving mode corresponding to the second temperature difference based on the pre-stored mapping relationship between the second temperature difference and the energy-saving mode within the air conditioner includes...

[0019] When the second temperature difference exceeds the second set value, the first energy-saving mode is activated.

[0020] When the third set value ≤ the second temperature difference ≤ the second set value, enter the second energy-saving mode;

[0021] When the second temperature difference is less than the third set value, the third energy-saving mode is entered.

[0022] Further optionally, the step of determining the energy-saving control strategy under the corresponding energy-saving mode based on the outdoor ambient temperature and the rate of change of the indoor ambient temperature includes:

[0023] The correction value of the control object's operating parameters corresponding to the energy-saving mode is determined based on the outdoor ambient temperature and the rate of change of the indoor ambient temperature.

[0024] The operating parameters of the controlled object are corrected based on the current operating parameters of the controlled object and the correction value;

[0025] The controlled object is operated according to the modified operating parameters.

[0026] Further optionally, the step of determining the correction value of the control object's operating parameters corresponding to the energy-saving mode based on the outdoor ambient temperature and the rate of change of the indoor ambient temperature includes...

[0027] The correction values ​​corresponding to the outdoor ambient temperature and the indoor ambient temperature change rate are determined based on the mapping relationship table of outdoor ambient temperature, indoor ambient temperature change rate, and correction value pre-stored by the air conditioner.

[0028] Further optionally, when the controlled object is an electronic expansion valve, the operating parameter of the controlled object is the opening degree of the electronic expansion valve;

[0029] The correction value in the mapping table of outdoor ambient temperature - indoor ambient temperature change rate - correction value is negatively correlated with the outdoor ambient temperature and positively correlated with the indoor ambient temperature change rate.

[0030] Further optionally, when the controlled object is a compressor, the operating parameter of the controlled object is the compressor frequency;

[0031] The correction value in the mapping table of outdoor ambient temperature - indoor ambient temperature change rate - correction value is negatively correlated with the outdoor ambient temperature and positively correlated with the indoor ambient temperature change rate.

[0032] Further optionally, when the controlled object is an external fan, the operating parameter of the controlled object is the external fan speed;

[0033] The correction value in the mapping table of outdoor ambient temperature - indoor ambient temperature change rate - correction value is negatively correlated with the outdoor ambient temperature and positively correlated with the indoor ambient temperature change rate.

[0034] Optionally, in the energy-saving mode, the first temperature difference is also monitored, and when the first temperature difference is greater than the set temperature difference, the energy-saving control mode is exited.

[0035] A second aspect of the present invention discloses an air conditioner control device, which includes one or more processors and a non-transitory computer-readable storage medium storing program instructions. When the one or more processors execute the program instructions, the one or more processors are used to implement the control method provided in the first aspect of the present invention.

[0036] The third aspect of the present invention discloses an air conditioner that employs the control method provided in the first aspect of the present invention, or includes the control device provided in the second aspect of the present invention.

[0037] Beneficial effects: In cooling mode, the system controls the entry into energy-saving mode by measuring outdoor and indoor ambient temperatures and the duration of air conditioning operation. It also determines which energy-saving mode to enter and corrects the operating parameters of the components to be regulated under the corresponding energy-saving mode. This effectively reduces the energy consumption of air conditioning cooling, keeping users in a comfortable state and effectively solving the problems of energy waste and user discomfort during long-term operation of traditional air conditioning cooling mode. Attached Figure Description

[0038] The above and other objects, features, and advantages of the present invention will become more apparent from the detailed description of exemplary embodiments with reference to the accompanying drawings. The drawings described below are merely some embodiments disclosed in the present invention; those skilled in the art can obtain other drawings based on these drawings without any inventive effort.

[0039] Figure 1 An exemplary flowchart of an air conditioning control method according to an embodiment of the present invention is shown;

[0040] Figure 2 A schematic flowchart of an air conditioning control method according to an embodiment of the present invention is shown as an example. Detailed Implementation

[0041] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0042] The terminology used in the embodiments of this invention is for the purpose of describing particular embodiments only and is not intended to limit the invention. The singular forms “a,” “the,” and “the” used in the embodiments of this invention and the appended claims are also intended to include the plural forms, unless the context clearly indicates otherwise. “Multiple” generally includes at least two, but does not exclude the inclusion of at least one.

[0043] It should be understood that the term "and / or" used in this article is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " in this article generally indicates that the preceding and following related objects have an "or" relationship.

[0044] It should also be noted that the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a product or system comprising a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a product or system. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the product or system that includes said element.

[0045] The control method of an air conditioner according to an embodiment of the present invention will now be described with reference to the accompanying drawings.

[0046] Figure 1 This is a schematic flowchart of an air conditioning control method according to an embodiment of the present invention. (Refer to...) Figure 1 The air conditioner in this embodiment is equipped with an energy-saving control mode, which includes multiple energy-saving modes. The control method of the air conditioner includes:

[0047] S11: In cooling mode, obtain outdoor ambient temperature, indoor ambient temperature, user-set temperature, and air conditioner running time;

[0048] In this embodiment, the air conditioner monitors the outdoor and indoor ambient temperatures in real time, or at set intervals, as well as the user-set temperature and the air conditioner's operating time in cooling mode. The set interval can be 1 second, 2 seconds, or other intervals.

[0049] S12: Calculate the first temperature difference based on the indoor ambient temperature and the user-set temperature, and determine whether to enter the energy-saving control mode based on the first temperature difference and the air conditioner's running time.

[0050] In this embodiment, after obtaining the indoor ambient temperature and the user-set temperature, the air conditioner calculates the first temperature difference, which satisfies: ΔT1=T 内环 -T 设定 Where ΔT1 is the first temperature difference, T 内环 Indoor ambient temperature, T 设定 The user sets a temperature, and the current operating status of the air conditioner, based on the first temperature difference and the air conditioner's running time, determines whether it meets the conditions for entering the energy-saving control mode. The air conditioner's running time is the duration it operates in cooling mode after startup. Preferably, the energy-saving control mode is entered when both the first temperature difference and the air conditioner's running time simultaneously meet the following two conditions, P1 and P2: P1, first temperature difference ≤ first set value; P2, air conditioner running time ≥ set duration. The range of the first set value can be selected as [-1℃, 0℃]. The range of the set duration can be selected as greater than or equal to 60 minutes.

[0051] S13: In energy-saving control mode, calculate the second temperature difference based on the outdoor ambient temperature and the indoor ambient temperature, and determine the energy-saving mode to enter based on the second temperature difference;

[0052] In this embodiment, after obtaining the outdoor and indoor ambient temperatures, the air conditioner calculates a second temperature difference, which satisfies: ΔT2=T 外环 -T 内环 Where ΔT2 is the second temperature difference, T 内环 Indoor ambient temperature, T 外环The outdoor ambient temperature is used as the reference point. Based on the second temperature difference, the energy-saving mode that the air conditioner enters after entering the energy-saving control mode can be determined. In this implementation, different control objects correspond to different energy-saving modes, and the operating parameters of different control objects are adjusted in different energy-saving modes. Optionally, the control objects corresponding to different energy-saving modes can be one or more of the following: electronic expansion valve, compressor, indoor fan, and outdoor fan. The corresponding operating parameters are the opening degree of the electronic expansion valve, the compressor frequency, the indoor fan speed, and the outdoor fan speed.

[0053] Optionally, determining the energy-saving mode based on the second temperature difference involves using a pre-stored mapping relationship between the second temperature difference and energy-saving modes within the air conditioner. After calculating the second temperature difference based on the outdoor and indoor ambient temperatures, the temperature range within the mapping table is determined, and then the corresponding energy-saving mode is determined based on that temperature range.

[0054] In one implementation of this embodiment, the energy-saving control mode includes a first energy-saving mode that regulates the opening of the electronic expansion valve, a second energy-saving mode that regulates the compressor frequency, and a third energy-saving mode that simultaneously regulates the opening of the electronic expansion valve and the speed of the outdoor fan. When the second temperature difference > a second set value, the system enters the first energy-saving mode; when the third set value ≤ the second temperature difference ≤ the second set value, the system enters the second energy-saving mode; and when the second temperature difference < the third set value, the system enters the third energy-saving mode. For example, when the second temperature difference > 10°C, it indicates a large difference in indoor and outdoor environmental loads. When the electronic expansion valve opening is adjusted, the cooling capacity of the indoor unit is relatively small, and it will not cause significant fluctuations in the outlet air temperature and room temperature. After entering the first energy-saving mode, the opening of the electronic expansion valve is increased, and the compressor power consumption is reduced. When 5℃≤Second temperature difference≤10℃, the difference between indoor and outdoor environmental loads is moderate. The second energy-saving mode is entered to adjust the compressor frequency and reduce compressor power consumption. When the second temperature difference<5℃, it indicates that the difference between indoor and outdoor environmental loads is small. If the first or second energy-saving mode is used, the cooling capacity will be greatly reduced, which will also cause a significant increase in room temperature. The third energy-saving mode performs fine adjustment of the air conditioning cooling capacity by jointly controlling the opening of the electronic expansion valve and the fan speed.

[0055] S14: In energy-saving mode, determine the rate of change of indoor ambient temperature based on the change of the first temperature difference, and determine the energy-saving control strategy for the corresponding energy-saving mode based on the rate of change of outdoor ambient temperature and indoor ambient temperature.

[0056] In this embodiment, after calculating the first temperature difference based on the indoor ambient temperature and the user-set temperature, the air conditioner can obtain the rate of change of the indoor ambient temperature based on the change of the first temperature difference within a preset period. The rate of change of the indoor ambient temperature satisfies: X = ΔT1 / Δt, where X is the rate of change of the indoor ambient temperature, ΔT1 is the first temperature difference, and Δt is the preset period. The preset period can be 1S, 2S, or other interval periods. Based on the indoor ambient temperature and the rate of change of the indoor ambient temperature, the energy-saving control strategy of the corresponding control object in the energy-saving mode entered by the air conditioner can be determined.

[0057] In the embodiment of the present invention, the energy-saving control mode is controlled by the outdoor ambient temperature, indoor ambient temperature and air conditioner running time in the cooling mode. The energy-saving mode is determined and the correction value of the operating parameters of the component to be controlled in the corresponding energy-saving mode is determined to correct the controlled object. In this way, the energy consumption of air conditioning cooling can be effectively reduced, so that the user is always in a comfortable state. This effectively solves the problems of energy waste and user discomfort during long-term operation of traditional air conditioning cooling mode.

[0058] Figure 2 This is a schematic flowchart of an air conditioning control method according to an embodiment of the present invention. (Refer to...) Figure 2 Step S14, which involves determining the energy-saving control strategy under the corresponding energy-saving mode based on the rate of change of outdoor and indoor ambient temperatures, includes steps S21 to S23, wherein:

[0059] S21: Determine the correction value of the operating parameters of the control object corresponding to the energy-saving mode based on the rate of change of outdoor ambient temperature and indoor ambient temperature;

[0060] In this embodiment, after determining the energy-saving mode to be entered, the air conditioner determines the control object based on the energy-saving mode. The control object corresponding to each energy-saving mode can be one or more of the following: compressor, electronic expansion valve, indoor fan, and outdoor fan. After determining the control object, the correction values ​​for the operating parameters of the control object are determined based on the rate of change of outdoor and indoor ambient temperatures.

[0061] Optionally, the correction values ​​for the operating parameters of the controlled object corresponding to the energy-saving mode are determined based on the rate of change of outdoor and indoor ambient temperatures. These correction values ​​are determined using a pre-stored mapping table of outdoor ambient temperature, indoor ambient temperature change rate, and correction value. If multiple controlled objects are involved in the current energy-saving mode, each controlled object corresponds to a pre-set mapping table.

[0062] For example, the energy-saving control modes include a first energy-saving mode that regulates the opening of the electronic expansion valve, a second energy-saving mode that regulates the compressor frequency, and a third energy-saving mode that simultaneously regulates the opening of the electronic expansion valve and the speed of the outdoor fan. When the air conditioner meets the temperature conditions for entering the first energy-saving mode, the electronic expansion valve opening correction value is determined according to a pre-stored mapping table of outdoor ambient temperature, indoor ambient temperature change rate, and electronic expansion valve correction value, as shown in Table 1 below. When the air conditioner meets the temperature conditions for entering the second energy-saving mode, the compressor frequency correction value is determined according to a pre-stored mapping table of outdoor ambient temperature, indoor ambient temperature change rate, and compressor frequency correction value, as shown in Table 2 below. When the air conditioner meets the temperature conditions for entering the third energy-saving mode, the electronic expansion valve correction value is determined according to a pre-stored mapping table of outdoor ambient temperature, indoor ambient temperature change rate, and electronic expansion valve opening correction value, as shown in Table 1 below, and the outdoor fan speed correction value is determined according to a pre-stored mapping table of outdoor ambient temperature, indoor ambient temperature change rate, and outdoor fan speed correction value, as shown in Table 3 below.

[0063] Table 1: Mapping Relationship between Outdoor Ambient Temperature - Indoor Ambient Temperature Change Rate - Electronic Expansion Valve Correction Value

[0064]

[0065] In Table 1: X represents the rate of change of indoor ambient temperature, and a, X0, and X1 are different values ​​for determining the rate of change of indoor ambient temperature, where a < X0 < X1. 外环 The outdoor ambient temperature, T 外环1 T 外环2 These are different determination values ​​for outdoor ambient temperature, where T 外环1 <T 外环2 ΔP 修正0 ΔP 修正1 ΔP 修正2 The correction value for the opening degree of the electronic expansion valve corresponding to different outdoor ambient temperature ranges, where: ΔP 修正0 >ΔP 修正1 >ΔP 修正2 ΔP1 and ΔP2 are correction values ​​corresponding to different indoor ambient temperature change rate ranges, based on the electronic expansion valve opening correction values ​​corresponding to the same outdoor ambient temperature range, where ΔP1 < ΔP2. For example, ΔP... 修正0 ΔP 修正1 ΔP 修正2 The value range of is [0,50], and the value range of ΔP1 and ΔP2 is [0,20].

[0066] In one implementation of this embodiment, when the controlled object is an electronic expansion valve, the operating parameter of the controlled object is the opening degree of the electronic expansion valve. In the mapping table of outdoor ambient temperature - indoor ambient temperature change rate - correction value, the magnitude of the correction value is negatively correlated with the outdoor ambient temperature and positively correlated with the indoor ambient temperature change rate. This is because the higher the outdoor ambient temperature, the smaller the opening correction, ensuring a throttling effect; the greater the rate of temperature decrease, the more the opening is corrected upwards, thereby increasing the evaporator temperature, reducing cooling output, and preventing the indoor temperature from becoming too low.

[0067] Table 2: Mapping Relationship between Outdoor Ambient Temperature, Indoor Ambient Temperature Change Rate, and Compressor Frequency Correction Value

[0068]

[0069] In Table 2: X represents the rate of change of indoor ambient temperature, and a, X0, and X1 are different values ​​for determining the rate of change of indoor ambient temperature, where a < X0 < X1. 外环 The outdoor ambient temperature, T 外环1 T 外环2 These are different determination values ​​for outdoor ambient temperature, where T 外环1 <T 外环2 ΔF 修正0 ΔF 修正1 ΔF 修正2 Compressor frequency correction values ​​corresponding to different outdoor ambient temperature ranges, where: ΔF 修正0 >ΔF 修正1 >ΔF 修正2 ΔF1 and ΔF2 are correction values ​​corresponding to different indoor ambient temperature change rate ranges, based on the compressor frequency correction value corresponding to the same outdoor ambient temperature range, where ΔF1 < ΔF2. For example, ΔF... 修正0 ΔF 修正1 ΔF 修正2 The range of values ​​for is [0,5], and the range of values ​​for ΔP1 and ΔP2 is [0,2].

[0070] In one implementation of this embodiment, when the controlled object is a compressor, the operating parameter of the controlled object is the compressor frequency. In the mapping table of outdoor ambient temperature - indoor ambient temperature change rate - correction value, the magnitude of the correction value is negatively correlated with the outdoor ambient temperature and positively correlated with the indoor ambient temperature change rate. This is because the higher the outdoor ambient temperature, the less the frequency correction is applied, ensuring a better temperature drop effect. ΔF1 < ΔF2, the faster the indoor temperature drops; the faster the indoor temperature drops, the more the frequency is corrected downwards, thereby increasing the evaporator temperature, reducing cooling output, and preventing the indoor temperature from becoming too low.

[0071] Table 3: Mapping Relationship between Outdoor Ambient Temperature - Rate of Change of Indoor Ambient Temperature - Correction Value for Outdoor Fan Speed

[0072]

[0073] In Table 3: X represents the rate of change of indoor ambient temperature, and a, X0, and X1 are different determination values ​​for the rate of change of indoor ambient temperature, where a < X0 < X1. 外环 The outdoor ambient temperature, T 外环1 T 外环2 These are different determination values ​​for outdoor ambient temperature, where T 外环1 <T 外环2 ΔN 修正0 ΔN 修正1 ΔN 修正2 The correction value for the outdoor fan speed corresponding to different outdoor ambient temperature ranges, where: ΔN 修正0 >ΔN 修正1 >ΔN 修正2 ΔN1 and ΔN2 are correction values ​​corresponding to different indoor ambient temperature change rate ranges, based on the outdoor fan speed correction values ​​corresponding to the same outdoor ambient temperature range, where ΔN1 < ΔN2. For example, ΔN... 修正0 ΔN 修正1 ΔN 修正2 The value range of is [0, 100], and the value range of ΔP1 and ΔP2 is [0, 50].

[0074] In one implementation of this embodiment, when the controlled object is an outdoor fan, the operating parameter of the controlled object is the outdoor fan speed. In the mapping table of outdoor ambient temperature - indoor ambient temperature change rate - correction value, the magnitude of the correction value is negatively correlated with the outdoor ambient temperature and positively correlated with the indoor ambient temperature change rate. The higher the outdoor ambient temperature, the smaller the correction of the outdoor fan speed, ensuring that indoor heat can be output to the outside in a timely manner; the greater the rate of temperature decrease, the more the speed is corrected downwards, thereby increasing the evaporator temperature, reducing cooling output, and preventing the indoor temperature from becoming too low.

[0075] S22: Adjust the operating parameters of the controlled object based on its current operating parameters and correction values;

[0076] In this embodiment, the air conditioner can make corrections based on the current operating parameters of the controlled object after determining the correction value of the controlled object corresponding to the current operating mode. The current operating mode can correct multiple controlled objects simultaneously or sequentially.

[0077] For example, if the controlled object is an electronic expansion valve, the target opening degree of the electronic expansion valve satisfies: P=P 当前开度 +ΔP 修正Where: P is the target opening degree of the electronic expansion valve, P 当前开度 ΔP represents the current opening degree of the electronic expansion valve. 修正 This is the correction value for the electronic expansion valve opening. If the controlled object is a compressor, the compressor's target frequency satisfies: F = F0 当前开度 +ΔF 修正 Where: F is the target frequency of the compressor, F 当前频率 ΔF is the current frequency of the compressor. 修正 This is the compressor frequency correction value. If the controlled object is the outdoor fan, the target speed of the outdoor fan satisfies: N = N 当前转速 +ΔN 修正 Where: N is the target speed of the external fan, N 当前频率 ΔN represents the current rotational speed of the external fan. 修正 This is the correction value for the external fan speed.

[0078] S23: Control the controlled object to operate according to the revised operating parameters.

[0079] After correcting the operating parameters of the controlled object, the air conditioner in this embodiment will maintain the operating parameters for a certain operating cycle, which can be 30 minutes, 1 hour, or other operating cycles. Once the operating cycle is reached, the air conditioner will re-run the control logic of this embodiment. Specifically, it will determine whether to enter the energy-saving control mode based on the first temperature difference and the operating time. After entering the cooling control mode, it will determine the energy-saving mode to enter based on the second temperature difference. After entering the determined energy-saving mode, it will adjust the operating parameters of the controlled object corresponding to the entered energy-saving mode based on the rate of change of the outdoor and indoor ambient temperatures.

[0080] Optionally, in energy-saving mode, the first temperature difference is also monitored, and when the first temperature difference is greater than the set temperature difference, the energy-saving control mode is exited.

[0081] In this embodiment, the air conditioner monitors the magnitude of the first temperature difference in real time or at set intervals during energy-saving control mode. The set intervals can be 1 second, 2 seconds, or other intervals. When the first temperature difference exceeds the set temperature difference, the air conditioner exits the energy-saving control mode and resumes normal cooling mode.

[0082] This embodiment also discloses an air conditioner control device, which includes one or more processors and a non-transitory computer-readable storage medium storing program instructions. When the one or more processors execute the program instructions, the one or more processors are used to implement the control method provided in the first aspect of the present invention.

[0083] This embodiment also discloses an air conditioner that employs the control method provided in the first aspect of the present invention, or includes the control device provided in the second aspect of the present invention.

[0084] In the different embodiments provided by this invention, the same parameters, terms, logic, etc. should be understood to have the same meaning, and this application does not intentionally repeat the description in each embodiment.

[0085] Exemplary embodiments of the present disclosure have been specifically shown and described above. It should be understood that the present disclosure is not limited to the detailed structures, arrangements, or implementation methods described herein; rather, the present disclosure is intended to cover various modifications and equivalent arrangements contained within the spirit and scope of the appended claims.

Claims

1. A method for controlling an air conditioner, characterized in that, The air conditioner is equipped with an energy-saving control mode, which includes multiple energy-saving modes, and the control method includes: In cooling mode, the outdoor ambient temperature, indoor ambient temperature, user-set temperature, and air conditioner running time are obtained. The first temperature difference is calculated based on the indoor ambient temperature and the user-set temperature. The energy-saving control mode is then determined based on the first temperature difference and the air conditioner's operating time. In the energy-saving control mode, a second temperature difference is calculated based on the outdoor ambient temperature and the indoor ambient temperature, and the energy-saving mode to be entered is determined based on the second temperature difference; In the energy-saving mode, the rate of change of indoor ambient temperature is determined based on the change of the first temperature difference, and the energy-saving control strategy for the corresponding energy-saving mode is determined based on the change of outdoor ambient temperature and the rate of change of indoor ambient temperature. The step of determining the energy-saving mode to be entered based on the second temperature difference includes: determining the energy-saving mode corresponding to the second temperature difference based on the mapping relationship between the second temperature difference and the energy-saving mode pre-stored in the air conditioner; and adjusting the operating parameters of different control objects under different energy-saving modes. The energy-saving control modes include a first energy-saving mode that regulates the opening of the electronic expansion valve, a second energy-saving mode that regulates the compressor frequency, and a third energy-saving mode that simultaneously regulates the opening of the electronic expansion valve and the speed of the outdoor fan. The determination of the energy-saving mode corresponding to the second temperature difference based on a pre-stored mapping relationship between the second temperature difference and the energy-saving mode within the air conditioner includes: entering the first energy-saving mode when the second temperature difference > a second set value; entering the second energy-saving mode when the third set value ≤ the second temperature difference ≤ the second set value; and entering the third energy-saving mode when the second temperature difference < the third set value. The method for determining the energy-saving control strategy under the corresponding energy-saving mode based on the outdoor ambient temperature and the rate of change of the indoor ambient temperature includes: The correction value of the control object's operating parameters corresponding to the energy-saving mode is determined based on the outdoor ambient temperature and the rate of change of the indoor ambient temperature. The operating parameters of the controlled object are corrected based on the current operating parameters of the controlled object and the correction value; The controlled object is operated according to the modified operating parameters.

2. The air conditioning control method according to claim 1, characterized in that, The step of determining whether to enter the energy-saving control mode based on the first temperature difference and the air conditioner's operating time includes... When the first temperature difference and the air conditioner's operating time simultaneously meet the following two conditions, P1 and P2, the energy-saving control mode is entered, wherein: P1, First temperature difference ≤ First set value; P2. Air conditioner running time ≥ set time.

3. The air conditioning control method according to claim 1, characterized in that, The step of determining the correction value of the control object's operating parameters corresponding to the energy-saving mode based on the outdoor ambient temperature and the rate of change of the indoor ambient temperature includes... The correction values ​​corresponding to the outdoor ambient temperature and the indoor ambient temperature change rate are determined based on the mapping relationship table of outdoor ambient temperature, indoor ambient temperature change rate, and correction value pre-stored by the air conditioner.

4. The air conditioning control method according to claim 3, characterized in that, When the controlled object is an electronic expansion valve, the operating parameter of the controlled object is the opening degree of the electronic expansion valve; The correction value in the mapping table of outdoor ambient temperature - indoor ambient temperature change rate - correction value is negatively correlated with the outdoor ambient temperature and positively correlated with the indoor ambient temperature change rate.

5. The air conditioning control method according to claim 3, characterized in that, When the controlled object is a compressor, the operating parameter of the controlled object is the compressor frequency; The correction value in the mapping table of outdoor ambient temperature - indoor ambient temperature change rate - correction value is negatively correlated with the outdoor ambient temperature and positively correlated with the indoor ambient temperature change rate.

6. The air conditioning control method according to claim 3, characterized in that, When the controlled object is an external fan, the operating parameter of the controlled object is the external fan speed; The correction value in the mapping table of outdoor ambient temperature - indoor ambient temperature change rate - correction value is negatively correlated with the outdoor ambient temperature and positively correlated with the indoor ambient temperature change rate.

7. The air conditioning control method according to claim 1, characterized in that, In the energy-saving mode, the first temperature difference is also monitored, and when the first temperature difference is greater than the set temperature difference, the energy-saving control mode is exited.

8. A control device for an air conditioner, characterized in that, It includes one or more processors and a non-transitory computer-readable storage medium storing program instructions, wherein when the one or more processors execute the program instructions, the one or more processors are configured to implement the method of any one of claims 1-7.

9. An air conditioner, characterized in that, It employs the method described in any one of claims 1-7, or includes the control device described in claim 8.

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