Air conditioner control method and device, multi-split air conditioner and storage medium

Abstract

The present application relates to the technical field of air conditioners, and in particular to an air conditioner control method and device, a multi-split air conditioner and a storage medium. The present application determines an indoor unit in an energy-saving mode, so as to facilitate subsequent adjustment of the operating parameters of the indoor unit. In order to accurately and effectively adjust, the temperature difference between the area temperature of the area where the indoor unit is located and the set target temperature is used to accurately adjust the operating parameters of the target indoor unit, so as to reduce the cold output of the indoor unit without changing the operating parameters of the outdoor unit of the multi-split air conditioner. The technical problems of large energy consumption and excessive cold output of the prior art multi-split air conditioner are avoided, and the energy consumption of the air conditioner can be reduced.

Description

Technical Field

[0001] This invention relates to the field of air conditioner technology, and in particular to an air conditioner control method, device, multi-split air conditioner, and storage medium. Background Technology

[0002] When a multi-split air conditioner is in cooling operation, if the temperature in a room is close to the user's set temperature and not much cooling input is needed, but if the air conditioners in other rooms have not yet reached their set temperatures, the outdoor unit's compressor frequency will still be relatively high. This will lead to excessive cooling input and high energy consumption, affecting the user's comfort.

[0003] The above content is only used to help understand the technical solution of the present invention and does not represent an admission that the above content is prior art. Summary of the Invention

[0004] The main objective of this invention is to provide an air conditioner control method, device, multi-split air conditioner, and storage medium, aiming to solve the technical problems of existing multi-split air conditioners having high energy consumption and excessive cooling output.

[0005] To achieve the above objectives, the present invention provides an air conditioner control method, which is applied to a multi-split air conditioner, the multi-split air conditioner comprising: an outdoor unit and multiple indoor units;

[0006] The method includes the following steps:

[0007] When the air conditioner is in cooling mode, the target indoor unit is identified as being in energy-saving mode.

[0008] Obtain the regional temperature of the area where the target indoor unit is located and the set target temperature;

[0009] Calculate the temperature difference between the temperature of the area and the set target temperature;

[0010] The operating parameters of the target indoor unit are adjusted according to the temperature difference to reduce the cooling output of the indoor unit.

[0011] Optionally, the indoor unit includes: an indoor heat exchanger and a throttling element;

[0012] The step of adjusting the operating parameters of the target indoor unit based on the temperature difference includes:

[0013] Obtain the actual superheat and the set superheat of the indoor heat exchanger;

[0014] Determine the temperature difference range within which the temperature difference falls, and determine the superheat correction value based on the temperature difference range;

[0015] The set superheat is corrected according to the superheat correction value to obtain the target superheat.

[0016] Determine the superheat difference between the actual superheat and the target superheat;

[0017] The opening degree of the throttling element is adjusted according to the superheat difference.

[0018] Optionally, obtaining the actual superheat of the indoor heat exchanger includes:

[0019] Obtain the coil temperature and outlet temperature of the indoor heat exchanger;

[0020] The actual superheat is determined based on the difference between the outlet temperature and the coil temperature.

[0021] Optionally, the difference range is negatively correlated with the superheat correction value.

[0022] Optionally, adjusting the operating parameters of the target indoor unit based on the temperature difference includes:

[0023] Increase the start-up temperature threshold of the target indoor unit, and control the target indoor unit to start when the temperature difference is greater than or equal to the start-up temperature threshold, or when the duration of the temperature difference being less than the start-up temperature threshold is less than a preset duration.

[0024] Optionally, adjusting the operating parameters of the target indoor unit based on the temperature difference includes:

[0025] Increase the temperature-reaching shutdown threshold of the target indoor unit. When the duration for which the temperature difference is less than the start-up temperature threshold is greater than a preset duration, or when the temperature difference is less than the temperature-reaching shutdown threshold, control the target indoor unit to shut down when it reaches the temperature. The temperature-reaching shutdown threshold is less than the start-up temperature threshold.

[0026] Optionally, the indoor unit further includes: a fan;

[0027] The step of adjusting the operating parameters of the target indoor unit based on the temperature difference includes:

[0028] Obtain the conversion coefficient between the temperature difference of the target indoor unit and the fan speed;

[0029] The conversion coefficient is increased based on a preset conversion coefficient to reduce the fan speed.

[0030] Furthermore, to achieve the above objectives, the present invention also proposes an air conditioner control device, the air conditioner control device comprising:

[0031] A determination module is used to determine the target indoor unit in energy-saving mode when the air conditioner is in cooling operation;

[0032] The acquisition module is used to acquire the regional temperature of the area where the target indoor unit is located and the set target temperature;

[0033] The calculation module is used to calculate the temperature difference between the area temperature and the set target temperature;

[0034] The adjustment module is used to adjust the operating parameters of the target indoor unit according to the temperature difference, so as to reduce the cooling output of the indoor unit.

[0035] Furthermore, to achieve the above objectives, the present invention also proposes a multi-split air conditioner, the multi-split air conditioner comprising: a memory, a processor, and an air conditioner control program stored in the memory and executable on the processor, the air conditioner control program being configured to implement the steps of the air conditioner control method described above.

[0036] In addition, to achieve the above objectives, the present invention also proposes a storage medium storing an air conditioner control program, which, when executed by a processor, implements the steps of the air conditioner control method described above.

[0037] This invention discloses an air conditioner control method applied to a multi-split air conditioner, which includes an outdoor unit and multiple indoor units. The control method includes: identifying a target indoor unit in energy-saving mode during cooling operation; obtaining the regional temperature of the area where the target indoor unit is located and a set target temperature; calculating the temperature difference between the regional temperature and the set target temperature; and adjusting the operating parameters of the target indoor unit based on the temperature difference to reduce the cooling output of the indoor unit. Compared with existing technologies, this invention identifies the indoor unit in energy-saving mode to facilitate subsequent adjustment of its operating parameters. Furthermore, for precise and effective adjustment, the temperature difference between the regional temperature of the indoor unit and the set target temperature is used to accurately adjust the operating parameters of the target indoor unit, thereby reducing its cooling output without changing the operating parameters of the outdoor unit of the multi-split air conditioner. This avoids the technical problems of high energy consumption and excessive cooling output in existing multi-split air conditioners and also reduces the overall energy consumption of the air conditioner. Attached Figure Description

[0038] Figure 1 This is a schematic diagram of the structure of a multi-split air conditioner in the hardware operating environment involved in the embodiments of the present invention;

[0039] Figure 2 This is a flowchart illustrating the first embodiment of the air conditioner control method of the present invention;

[0040] Figure 3 This is a flowchart illustrating the second embodiment of the air conditioner control method of the present invention;

[0041] Figure 4 This is a flowchart illustrating the third embodiment of the air conditioner control method of the present invention;

[0042] Figure 5 This is a flowchart illustrating the fourth embodiment of the air conditioner control method of the present invention;

[0043] Figure 6 This is a schematic diagram showing the temperature difference and fan speed in different modes of an embodiment of the air conditioner control method of the present invention;

[0044] Figure 7 This is a schematic diagram showing the temperature difference and fan speed values ​​for different modes in an embodiment of the air conditioner control method of the present invention.

[0045] Figure 8 This is a structural block diagram of the first embodiment of the air conditioner control device of the present invention.

[0046] The realization of the objective, functional features and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0047] It should be understood that the specific embodiments described herein are for illustrative purposes only and are not intended to limit the scope of the invention.

[0048] Reference Figure 1 , Figure 1 This is a schematic diagram of the structure of a multi-split air conditioner in the hardware operating environment involved in the embodiments of the present invention.

[0049] like Figure 1 As shown, the multi-split air conditioner may include: a processor 1001, such as a central processing unit (CPU), a communication bus 1002, a user interface 1003, a network interface 1004, and a memory 1005. The communication bus 1002 is used to enable communication between these components. The user interface 1003 may include a display screen and an input unit such as a keyboard; optionally, the user interface 1003 may also include a standard wired interface or a wireless interface. The network interface 1004 may optionally include a standard wired interface or a wireless interface (such as a Wireless-Fidelity (Wi-Fi) interface). The memory 1005 may be high-speed random access memory (RAM) or stable non-volatile memory (NVM), such as a disk storage device. Optionally, the memory 1005 may also be a storage device independent of the aforementioned processor 1001.

[0050] Those skilled in the art will understand that Figure 1 The structure shown does not constitute a limitation on multi-split air conditioners and may include more or fewer components than shown, or combine certain components, or have different component arrangements.

[0051] like Figure 1 As shown, the memory 1005, which serves as a storage medium, may include an operating system, a network communication module, a user interface module, and an air conditioner control program.

[0052] exist Figure 1 In the multi-split air conditioner shown, the network interface 1004 is mainly used for data communication with the network server; the user interface 1003 is mainly used for data interaction with the user; the processor 1001 and the memory 1005 in the multi-split air conditioner of the present invention can be set in the multi-split air conditioner, and the multi-split air conditioner calls the air conditioner control program stored in the memory 1005 through the processor 1001 and executes the air conditioner control method provided in the embodiment of the present invention.

[0053] This invention provides an air conditioner control method, referring to... Figure 2 , Figure 2 This is a flowchart illustrating the first embodiment of an air conditioner control method according to the present invention.

[0054] In this embodiment, the air conditioner control method includes the following steps:

[0055] Step S10: When the air conditioner is in cooling mode, determine the target indoor unit that is in energy-saving mode.

[0056] It is worth noting that the air conditioner in this embodiment refers to a multi-split air conditioner. A multi-split air conditioner is an air conditioner with an outdoor unit connected to multiple indoor units, which can simultaneously adjust parameters such as air temperature, humidity, cleanliness, and air flow rate in multiple rooms, including but not limited to cooling, heating, and fresh air circulation modes. This embodiment mainly uses the cooling mode of a multi-split air conditioner as an example for explanation.

[0057] It is worth noting that, understandably, when a multi-split air conditioner is running in cooling mode, if the temperature of a room with a certain indoor unit is about to reach the user's set temperature, it is necessary to appropriately reduce the cooling input of that room. However, other rooms may have a greater cooling demand at this time. In this case, the cooling input of that room can be reduced by adjusting the operating parameters of the indoor unit in that room, such as reducing the indoor unit fan speed or the opening of the expansion valve. This embodiment does not impose specific restrictions on this.

[0058] In this embodiment, the energy-saving mode is also called the ECO (Ecology Conservation Optimization) mode, which is mainly applied to scenarios with low cooling demand, such as sleeping or constant temperature environments with small temperature differences between indoor and outdoor environments. This embodiment does not impose specific limitations on this.

[0059] The energy-saving mode of the indoor unit can be activated by the user through remote control, wired controller, button, and mobile APP. Each indoor unit can operate independently in energy-saving mode. After the indoor unit activates the energy-saving mode, it will send the start command of energy-saving control to the outdoor unit so that the indoor unit can adapt its operating parameters to adjust the cooling input of the corresponding area or room.

[0060] Step S20: Obtain the regional temperature of the area where the target indoor unit is located and the set target temperature.

[0061] Step S30: Calculate the temperature difference between the area temperature and the set target temperature.

[0062] It should be understood that the zone temperature can be collected by a temperature sensor or temperature sensor bulb in the zone where the indoor unit is located, while the target temperature is set by the user. The difference between the two can, to some extent, represent the operating status of the air conditioner over a period of time. For example, if the difference between the zone temperature and the target temperature is too large, and the target temperature is much lower than the zone temperature, it means that the zone where the indoor unit is located requires more cooling input; if the difference between the zone temperature and the target temperature is similar, it means that the zone where the indoor unit is located has a smaller cooling demand or is about to reach the temperature and shut down.

[0063] In this embodiment, the temperature difference between the area temperature and the set target temperature can better reflect the cooling demand of the area where the indoor unit of the air conditioner is located. Therefore, in this embodiment, when adjusting the operating parameters of the indoor unit in the subsequent adjustment period, the operating parameters can also be adjusted according to the temperature range in which the temperature difference is located.

[0064] Step S40: Adjust the operating parameters of the target indoor unit according to the temperature difference to reduce the cooling output of the indoor unit.

[0065] It is understood that the operating parameters of the target indoor unit in this embodiment include, but are not limited to, the indoor unit start-up temperature threshold, the temperature-reaching shutdown threshold, the fresh air fan speed, and the opening degree of the throttling element in the indoor unit. In the scenario where the cooling is based on a multi-split air conditioner, adjusting the temperature-reaching shutdown threshold and the indoor unit start-up temperature threshold can keep the temperature of the entire room in a higher range, thereby reducing the cooling demand of the room; adjusting the fresh air fan speed can reduce the amount of cold air delivered to the room, thereby reducing the indoor cooling input; the opening degree of the throttling element can reduce the rate of heat exchange of the refrigerant, reduce the heat exchange of the indoor heat exchanger of the indoor unit, thereby reducing the indoor cooling input.

[0066] In addition, in this embodiment, the cooling input can also be reduced by reducing the indoor unit's air baffle or by other methods that can achieve the same or similar reduction. This embodiment does not impose specific limitations on this.

[0067] This embodiment discloses an air conditioner control method applied to a multi-split air conditioner, which includes an outdoor unit and multiple indoor units. The air conditioner control method includes: determining a target indoor unit in energy-saving mode during the cooling operation of the air conditioner; obtaining the regional temperature of the area where the target indoor unit is located and a set target temperature; calculating the temperature difference between the regional temperature and the set target temperature; and adjusting the operating parameters of the target indoor unit according to the temperature difference to reduce the cooling output of the indoor unit. This embodiment determines the indoor unit in energy-saving mode to facilitate subsequent adjustment of the indoor unit's operating parameters. Furthermore, for precise and effective adjustment, the temperature difference between the regional temperature of the indoor unit's location and the set target temperature is used to accurately adjust the operating parameters of the target indoor unit to reduce the cooling output of the indoor unit without changing the operating parameters of the outdoor unit of the multi-split air conditioner. This avoids the technical problems of high energy consumption and excessive cooling output in existing multi-split air conditioners and also reduces the energy consumption of the air conditioner.

[0068] refer to Figure 3 , Figure 3 This is a flowchart illustrating a second embodiment of an air conditioner control method according to the present invention.

[0069] Based on the first embodiment described above, in this embodiment, step S40 includes:

[0070] Step S401: Obtain the actual superheat and the set superheat of the indoor heat exchanger.

[0071] It should be noted that superheat refers to the difference between the outlet temperature and the middle temperature of the indoor heat exchanger. After the compressor of the outdoor unit completes the compression process, it obtains high-temperature and high-pressure refrigerant vapor, which is discharged into the outdoor heat exchanger of the outdoor unit. The heat in the outdoor heat exchanger is absorbed by the outside air and exchanges heat with the air, completing the "heat release" process, that is, releasing the heat in the high-pressure vapor. The high-temperature and high-pressure vapor that is condensed gradually condenses into a high-pressure liquid, thus completing the condensation process. Then, it evaporates through the indoor heat exchanger of the indoor unit, thereby absorbing the heat of the area where the indoor unit is located and completing the evaporation process. The refrigerant in the pipes will exchange heat with the outside due to the influence of the pipe material. As a result, there is a difference between the middle temperature and the outlet temperature of the indoor heat exchanger, which is the evaporator. This superheat will prevent the evaporator from evaporating the refrigerant well, resulting in a decrease in the cooling capacity per unit volume and a reduction in the amount of cold air input into the room. Therefore, this embodiment increases the refrigerant transfer by changing the opening of the throttling element to maintain the input of cold air.

[0072] It is worth noting that the higher the actual superheat, the larger the opening of the throttling element will be. The specific opening range and adjustment direction of the throttling element depend on the difference between the actual superheat and the target superheat set by the multi-split air conditioner.

[0073] Furthermore, the steps for obtaining the actual superheat of the indoor heat exchanger specifically include:

[0074] Obtain the coil temperature and outlet temperature of the indoor heat exchanger;

[0075] The actual superheat is determined based on the difference between the outlet temperature and the coil temperature.

[0076] The coil temperature and outlet temperature can be obtained by temperature sensors installed at the coil outlet and outlet of the indoor heat exchanger, and then sent to the controller of the multi-split air conditioner for data processing. The actual superheat is calculated by the formula Tsh = T2b - T2, where T2b is the evaporator outlet temperature, T2 is the evaporator middle temperature, and Tsh is the actual superheat.

[0077] Step S402: Determine the temperature difference range and determine the superheat correction value based on the temperature difference range.

[0078] It should be noted that in this embodiment, when performing superheat correction, the temperature difference values ​​of different ranges are divided into different intervals. These intervals do not overlap. Different difference intervals correspond to different superheat correction values, and the difference intervals are negatively correlated with the superheat correction values. That is to say, the larger the temperature difference interval, the smaller the superheat correction value.

[0079] For example: if the temperature difference is greater than 3, the target superheat correction is SH_eco1; if the temperature difference is greater than 2, the target superheat correction is SH_eco2; if the temperature difference is greater than 1, the target superheat correction is SH_eco3; if the temperature difference is greater than or equal to 0, the target superheat correction is SH_eco4; if the temperature difference is less than 0, the target superheat correction is SH_eco5, where SH_eco1 = 0, SH_eco2 = 1, SH_eco3 = 2, SH_eco4 = 3, and SH_eco5 = 3. Of course, the superheat correction value can be flexibly adjusted in this embodiment, and this embodiment does not impose specific limitations on it.

[0080] Step S403: Correct the set superheat according to the superheat correction value to obtain the target superheat.

[0081] It should be understood that under ECO function, the target superheat of the indoor unit will be increased by a correction value. After the correction, the target superheat becomes larger, so the actual superheat is relatively smaller. The opening of the electronic expansion valve will be reduced to decrease the refrigerant flow, thereby reducing the output of cooling capacity, reducing energy waste, and avoiding frequent shutdowns when reaching the target temperature.

[0082] In practice, if the superheat is set to 5 and the temperature difference is greater than 3, then the corresponding superheat correction value is 0 and the target superheat is also 5; if the superheat is set to 5 and 2 ≥ temperature difference > 1, then the corresponding superheat correction value is 2 and the target superheat is also 7.

[0083] Step S404: Determine the superheat difference between the actual superheat and the target superheat.

[0084] Step S405: Adjust the opening degree of the throttling element according to the superheat difference.

[0085] It should be understood that, since the superheat correction value is not negative in this embodiment, the opening of the throttling element is generally reduced or kept in a constant state. The specific degree of reduction depends on the actual superheat. Therefore, this embodiment can also make numerical corrections to the actual superheat transmitted to the controller. That is, the actual superheat transmitted to the multi-split air conditioner is originally 3, but after the controller is corrected, it is corrected to 2, and the opening of the throttling element is adjusted.

[0086] This embodiment determines the superheat correction value based on the difference between the regional temperature and the set target temperature, and corrects the set superheat using the superheat correction value, so that the opening of the throttling element can be adjusted according to the superheat difference between the actual superheat and the target superheat, thereby reducing the cold input.

[0087] refer to Figure 4 , Figure 4 This is a flowchart illustrating a third embodiment of an air conditioner control method according to the present invention.

[0088] Based on the second embodiment described above, in this embodiment, step S40 further includes:

[0089] Step S401: Increase the start-up temperature threshold of the target indoor unit. When the temperature difference is greater than or equal to the start-up temperature threshold, or when the duration of the temperature difference being less than the start-up temperature threshold is less than a preset duration, control the target indoor unit to start.

[0090] It should be noted that whether the multi-split air conditioner is starting normally or restarting after reaching the set temperature and stopping, increasing the indoor unit's start-up temperature threshold will reduce the cooling capacity required for the area to reach the set temperature and restart, thus increasing the room's target temperature. Therefore, it can also relatively reduce the time and amount of cooling capacity input, avoiding excessive cooling capacity input and frequent shutdowns after reaching the set temperature.

[0091] In practice, if the indoor unit starts under normal cooling mode when T1-Tsc≥c1 or T1-Tsc<c1 for less than 3 minutes, then after the indoor unit turns on the energy-saving function, the starting condition is T1-Tsc≥c2 or T1-Tsc<c2 for less than 3 minutes, where c1<c2. At this time, it will be found that the room temperature rises, and less cooling capacity is needed to meet the user's needs, avoiding excessive cooling input.

[0092] It is understood that the preset duration can be set to 3 minutes and the start-up temperature threshold can be set to 2 degrees Celsius. This embodiment does not impose specific restrictions on these.

[0093] Furthermore, adjusting the operating parameters of the target indoor unit based on the temperature difference also includes:

[0094] Increase the temperature-reaching shutdown threshold of the target indoor unit. When the duration for which the temperature difference is less than the start-up threshold is greater than a preset duration, or when the temperature difference is less than the temperature-reaching shutdown threshold, control the target indoor unit to shut down when it reaches the temperature. The temperature-reaching shutdown threshold is less than the start-up threshold.

[0095] It is worth noting that an air conditioner needs the indoor temperature to be lower than the set temperature before it can stop operating. If the threshold for stopping operating when the indoor unit reaches the set temperature is increased, the amount of cooling required for the air conditioner to stop operating will be reduced, thus avoiding excessive cooling and frequent shutdowns when the unit reaches the set temperature.

[0096] In practice, the indoor unit's temperature-reaching shutdown condition is T1-Tsc < c1 for 3 minutes or T1-Tsc < d1. After the indoor unit activates its energy-saving function, the temperature-reaching shutdown condition becomes T1-Tsc < c2 for 3 minutes or T1-Tsc < d2, where d1 < c1, d2 < c2, and d1 < d2. At this point, it will be observed that the room's temperature-reaching shutdown threshold increases, requiring less cooling to meet user needs and avoiding excessive cooling input.

[0097] It is understandable that both raising the target indoor unit's temperature-reaching shutdown threshold and raising the target indoor unit's startup temperature threshold are intended to keep the target temperature in the area where the indoor unit is located within a higher temperature range than in the conventional cooling mode, thereby reducing the cooling capacity input demand in that area and avoiding the problem of excessive cooling capacity output by multi-split air conditioners.

[0098] This embodiment adjusts the temperature threshold for stopping and starting the target indoor unit to keep the target temperature in the area where the indoor unit is located within a higher temperature range than in the conventional cooling mode, thereby reducing the cooling input requirement of the area.

[0099] refer to Figure 5 , Figure 5 This is a flowchart illustrating the fourth embodiment of an air conditioner control method according to the present invention.

[0100] Based on the third embodiment described above, in this embodiment, step S40 further includes:

[0101] Step S401: Obtain the conversion coefficient between the temperature difference of the target indoor unit and the fan speed.

[0102] It should be noted that under normal cooling conditions, the fan speed of the indoor unit of a multi-split air conditioner has a linear relationship with the temperature difference between the zone temperature and the set target temperature. Generally speaking, the larger the temperature difference range, the higher the fan speed. In order to accurately reduce the fan speed and thus reduce the cooling input to the room, the conversion coefficient between the target indoor unit temperature difference and the fan speed can be obtained through experiments or settings before the air conditioner leaves the factory. Then, under the same temperature difference, a lower fan speed can be obtained by increasing the conversion coefficient.

[0103] In the specific implementation, refer to Figure 6 , Figure 6 The left side shows the relationship between temperature difference and fan speed under normal cooling mode. Figure 6The right side shows the relationship between the temperature difference and the fan speed in energy-saving mode, where a < b. This is to prevent the fan speed from dropping only when the temperature T1 reaches a very low level. This allows the fan speed to drop to a lower level earlier. A lower air velocity results in a smaller output of cooling capacity, making it easier to maintain a stable, low cooling output and avoiding excessive cooling capacity output that could cause the fan to shut down when the temperature is reached, thus affecting comfort.

[0104] refer to Figure 7 Taking a=0 and b=1 as an example, during normal cooling, the difference between the room temperature and the set temperature, i.e., T1-TSC<-1, runs at 20% fan speed and T1-TSC<-1.5, runs at 1% fan speed. However, during energy-saving mode, T1-TSC<0 runs at 20% fan speed and T1-TSC<-0.5 runs at 1% fan speed. This means that the room temperature does not need to drop very low to run at a lower fan speed. This allows the fan speed to drop to a lower speed sooner until it reaches the minimum allowable speed. The lower fan speed makes it easier to maintain a stable small cooling output.

[0105] Step S402: Increase the conversion coefficient based on the preset conversion coefficient to reduce the fan speed.

[0106] In practical implementation, the preset conversion coefficient can be selected based on the corresponding relationship between the fan speed and the temperature difference, for example: Figure 7 In this embodiment, the speeds of different fans are 0.5 degrees Celsius apart, so the preset conversion factor can be set to a multiple of 0.5. This embodiment does not impose any specific restrictions on this.

[0107] This embodiment adjusts the conversion coefficient between the fan speed and the temperature difference between the zone temperature and the set target temperature so that the air conditioner can have a lower fan speed at the same temperature, or achieve the same fan speed at a higher temperature, thereby reducing the cooling input to the room.

[0108] Furthermore, this embodiment of the invention also proposes a storage medium storing an air conditioner control program, which, when executed by a processor, implements the steps of the air conditioner control method described above.

[0109] Since this storage medium adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be repeated here.

[0110] Reference Figure 8 , Figure 8 This is a structural block diagram of the first embodiment of the air conditioner control device of the present invention.

[0111] like Figure 8 As shown, the air conditioner control device proposed in this embodiment of the invention includes:

[0112] The determination module 10 is used to determine the target indoor unit in energy-saving mode when the air conditioner is in cooling operation.

[0113] The acquisition module 20 is used to acquire the regional temperature of the area where the target indoor unit is located and the set target temperature.

[0114] The calculation module 30 is used to calculate the temperature difference between the area temperature and the set target temperature.

[0115] The adjustment module 40 is used to adjust the operating parameters of the target indoor unit according to the temperature difference, so as to reduce the cooling output of the indoor unit.

[0116] In one embodiment, the adjustment module 40 is further configured to obtain the actual superheat and the set superheat of the indoor heat exchanger;

[0117] Determine the temperature difference range and determine the superheat correction value based on the temperature difference range; correct the set superheat based on the superheat correction value to obtain the target superheat; determine the superheat difference between the actual superheat and the target superheat; adjust the opening of the throttling element based on the superheat difference.

[0118] In one embodiment, the adjustment module 40 is further configured to acquire the coil temperature and outlet temperature of the indoor heat exchanger; and determine the actual superheat based on the difference between the outlet temperature and the coil temperature.

[0119] In one embodiment, the adjustment module 40 is further configured to have the difference range negatively correlated with the superheat correction value.

[0120] In one embodiment, the adjustment module 40 is further configured to increase the start-up temperature threshold of the target indoor unit, and control the target indoor unit to start when the temperature difference is greater than or equal to the start-up temperature threshold, or when the duration of the temperature difference being less than the start-up temperature threshold is less than a preset duration.

[0121] In one embodiment, the adjustment module 40 is further configured to increase the temperature-reaching shutdown threshold of the target indoor unit, and control the target indoor unit to shut down when the temperature difference is less than the start-up temperature threshold for a duration greater than a preset duration, or when the temperature difference is less than the temperature-reaching shutdown threshold, wherein the temperature-reaching shutdown threshold is less than the start-up temperature threshold.

[0122] In one embodiment, the adjustment module 40 is further configured to obtain the conversion coefficient between the temperature difference of the target indoor unit and the fan speed; and increase the conversion coefficient based on a preset conversion coefficient to reduce the fan speed.

[0123] This embodiment discloses an air conditioner control method applied to a multi-split air conditioner, which includes an outdoor unit and multiple indoor units. The air conditioner control method includes: determining a target indoor unit in energy-saving mode during the cooling operation of the air conditioner; obtaining the regional temperature of the area where the target indoor unit is located and a set target temperature; calculating the temperature difference between the regional temperature and the set target temperature; and adjusting the operating parameters of the target indoor unit according to the temperature difference to reduce the cooling output of the indoor unit. This embodiment determines the indoor unit in energy-saving mode to facilitate subsequent adjustment of the indoor unit's operating parameters. Furthermore, for precise and effective adjustment, the temperature difference between the regional temperature of the indoor unit's location and the set target temperature is used to accurately adjust the operating parameters of the target indoor unit to reduce the cooling output of the indoor unit without changing the operating parameters of the outdoor unit of the multi-split air conditioner. This avoids the technical problems of high energy consumption and excessive cooling output in existing multi-split air conditioners and also reduces the energy consumption of the air conditioner.

[0124] It should be understood that the above are merely illustrative examples and do not constitute any limitation on the technical solutions of the present invention. In specific applications, those skilled in the art can make settings as needed, and the present invention does not impose any restrictions on this.

[0125] It should be noted that the workflow described above is merely illustrative and does not limit the scope of protection of this invention. In practical applications, those skilled in the art can select some or all of the workflow to achieve the purpose of this embodiment according to actual needs, and no restrictions are imposed here.

[0126] In addition, for technical details not described in detail in this embodiment, please refer to the air conditioner control method provided in any embodiment of the present invention, which will not be repeated here.

[0127] Furthermore, it should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or system that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or system. Unless otherwise specified, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or system that includes that element.

[0128] The sequence numbers of the above embodiments of the present invention are for descriptive purposes only and do not represent the superiority or inferiority of the embodiments.

[0129] Through the above description of the embodiments, those skilled in the art can clearly understand that the methods of the above embodiments can be implemented by means of software plus necessary general-purpose hardware platforms. Of course, they can also be implemented by hardware, but in many cases the former is a better implementation method. Based on this understanding, the technical solution of the present invention, or the part that contributes to the prior art, can be embodied in the form of a software product. This computer software product is stored in a storage medium (such as read-only memory (ROM) / RAM, magnetic disk, optical disk) and includes several instructions to cause a terminal device (which may be a mobile phone, computer, server, or network device, etc.) to execute the methods described in the various embodiments of the present invention.

[0130] The above are merely preferred embodiments of the present invention and do not limit the scope of the patent. Any equivalent structural or procedural transformations made based on the description and drawings of the present invention, or direct or indirect applications in other related technical fields, are similarly included within the scope of patent protection of the present invention.

Claims

1. An air conditioner control method, characterized in that, The air conditioner control method is applied to a multi-split air conditioner, which includes an outdoor unit and multiple indoor units. The air conditioner control method includes: When the air conditioner is in cooling mode, the target indoor unit is identified as being in energy-saving mode. Obtain the regional temperature of the area where the target indoor unit is located and the set target temperature; Calculate the temperature difference between the temperature of the area and the set target temperature; The operating parameters of the target indoor unit are adjusted according to the temperature difference to reduce the cooling output of the indoor unit. The operating parameters of the target indoor unit include the indoor unit start-up temperature threshold, the temperature-reaching shutdown threshold, the fan speed, and the opening degree of the throttling element in the indoor unit. The indoor unit includes: an indoor heat exchanger and a throttling element; The step of adjusting the operating parameters of the target indoor unit based on the temperature difference includes: Obtain the actual superheat and the set superheat of the indoor heat exchanger; Determine the temperature difference range within which the temperature difference falls, and determine the superheat correction value based on the temperature difference range; The set superheat is corrected according to the superheat correction value to obtain the target superheat. Determine the superheat difference between the actual superheat and the target superheat; The opening degree of the throttling element is adjusted according to the superheat difference.

2. The air conditioner control method as described in claim 1, characterized in that, Obtaining the actual superheat of the indoor heat exchanger includes: Obtain the coil temperature and outlet temperature of the indoor heat exchanger; The actual superheat is determined based on the difference between the outlet temperature and the coil temperature.

3. The air conditioner control method as described in claim 1, characterized in that, The difference range is negatively correlated with the superheat correction value.

4. The air conditioner control method as described in claim 1, characterized in that, The step of adjusting the operating parameters of the target indoor unit based on the temperature difference includes: Increase the start-up temperature threshold of the target indoor unit, and control the target indoor unit to start when the temperature difference is greater than or equal to the start-up temperature threshold, or when the duration of the temperature difference being less than the start-up temperature threshold is less than a preset duration.

5. The air conditioner control method as described in claim 1, characterized in that, The step of adjusting the operating parameters of the target indoor unit based on the temperature difference includes: Increase the temperature-reaching shutdown threshold of the target indoor unit. When the duration for which the temperature difference is less than the start-up temperature threshold is greater than a preset duration, or when the temperature difference is less than the temperature-reaching shutdown threshold, control the target indoor unit to shut down when it reaches the temperature. The temperature-reaching shutdown threshold is less than the start-up temperature threshold.

6. The air conditioner control method as described in claim 1, characterized in that, The indoor unit also includes: a fan; The step of adjusting the operating parameters of the target indoor unit based on the temperature difference includes: Obtain the conversion coefficient between the temperature difference of the target indoor unit and the fan speed; The conversion coefficient is increased based on a preset conversion coefficient to reduce the fan speed.

7. An air conditioner control device, characterized in that, The air conditioner control device includes: A determination module is used to determine the target indoor unit in energy-saving mode when the air conditioner is in cooling operation; The acquisition module is used to acquire the regional temperature of the area where the target indoor unit is located and the set target temperature; The calculation module is used to calculate the temperature difference between the area temperature and the set target temperature; The adjustment module is used to adjust the operating parameters of the target indoor unit according to the temperature difference, so as to reduce the cooling output of the indoor unit. The operating parameters of the target indoor unit include the indoor unit start-up temperature threshold, the temperature-reaching shutdown threshold, the fan speed, and the opening degree of the throttling element in the indoor unit. The adjustment module is further configured to acquire the actual superheat and the set superheat of the indoor heat exchanger; determine the difference range of the temperature difference and determine the superheat correction value based on the difference range; correct the set superheat based on the superheat correction value to obtain the target superheat; determine the superheat difference between the actual superheat and the target superheat; and adjust the opening of the throttling element based on the superheat difference.

8. A multi-split air conditioner, characterized in that, The multi-split air conditioner includes: a memory, a processor, and an air conditioner control program stored in the memory and executable on the processor, the air conditioner control program being configured to implement the air conditioner control method as described in any one of claims 1 to 6.

9. A storage medium, characterized in that, The storage medium stores an air conditioner control program, which, when executed by a processor, implements the air conditioner control method as described in any one of claims 1 to 6.

Images