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

Abstract

The application discloses an air conditioner operation control method and device, an air conditioner and a storage medium, relates to the technical field of air conditioners, and discloses an air conditioner operation control method, which comprises the following steps: when each air conditioner indoor unit operates in a preset mode, calculating compressor frequency information according to indoor unit temperature information of each air conditioner indoor unit; and performing air outlet operation control of each air conditioner indoor unit according to the indoor unit temperature information and the compressor frequency information. In this way, an operation control method of a multi-connected air conditioner in a refrigeration mode is realized based on a side air outlet and a lower air outlet integrated indoor unit, the load output change in the combined air outlet mode of the side air outlet and the lower air outlet of the indoor unit is utilized, the adaptive adjustment capability of the terminal output of the indoor unit with an actual load scene is expanded, the range of the matched capacity is increased, the frequent start and stop of the compressor is reduced, and the energy saving and comfort of the user are improved.

Description

Technical Field

[0001] This application relates to the field of air conditioner technology, and in particular to air conditioner operation control methods, devices, air conditioners and storage media. Background Technology

[0002] Traditional multi-split air conditioning units typically use side-discharge indoor units. This simple airflow design results in simplistic airflow organization at the terminal and a single method for load output adjustment, relying solely on indoor fan speed. Since multi-split air conditioning systems have a wide load demand range, but users primarily operate under low loads, this can lead to a situation where the unit is overpowered during cooling mode. Under low load conditions, the high output at the terminal units results in frequent temperature-reaching and restarting, leading to neither energy efficiency nor comfort.

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

[0004] The main purpose of this application is to provide an air conditioning operation control method, device, air conditioner and storage medium, which aims to solve the technical problem that the side-discharge cooling of the air conditioner frequently reaches the temperature and starts and stops, which is neither energy-saving nor comfortable.

[0005] To achieve the above objectives, this application proposes an air conditioning operation control method, which is applied to an air conditioner. The air conditioner includes an outdoor unit and at least one indoor unit. The outdoor unit is connected to each indoor unit, and the indoor unit includes a side air outlet and a bottom air outlet.

[0006] The air conditioning operation control method includes:

[0007] When each indoor unit of the air conditioner is running in the preset mode, the compressor frequency information is calculated based on the indoor unit temperature information of each indoor unit.

[0008] The operation of the air outlets of each indoor air conditioner unit is controlled based on the indoor unit temperature information and the compressor frequency information.

[0009] Optionally, the step of calculating the compressor frequency information based on the indoor unit temperature information of each air conditioner indoor unit when each indoor unit is running in a preset mode includes:

[0010] When each indoor air conditioner unit is running in a preset mode, the system controls each indoor air conditioner unit to cool through the side air outlet and obtains the set temperature and return air temperature information of each indoor air conditioner unit.

[0011] The target evaporation temperature of the air conditioner is determined based on the set temperature and return air temperature information of each indoor unit.

[0012] The compressor frequency information is determined based on the target evaporation temperature.

[0013] Optionally, the step of determining the target evaporation temperature of the air conditioner based on the set temperature and return air temperature information of each indoor unit includes:

[0014] The maximum temperature difference between each indoor air conditioner unit is calculated based on the set temperature and return air temperature information of each indoor air conditioner unit.

[0015] The target evaporation temperature of the air conditioner is determined based on the maximum temperature difference.

[0016] Optionally, the step of determining the compressor frequency information based on the target evaporation temperature includes:

[0017] Calculate the actual average evaporation temperature of each indoor air conditioning unit;

[0018] The compressor frequency information is determined based on the target evaporation temperature and the actual average evaporation temperature.

[0019] Optionally, the step of calculating the actual average evaporation temperature of each indoor air conditioning unit includes:

[0020] Obtain the rated capacity information of each indoor air conditioning unit;

[0021] The target evaporation temperature is weighted and averaged based on the rated capacity information to obtain the actual average evaporation temperature.

[0022] Optionally, the step of controlling the operation of the air outlets of each indoor air conditioner unit based on the indoor unit temperature information and the compressor frequency information includes:

[0023] The current operating frequency is determined based on the compressor frequency information, and the maximum temperature difference is determined based on the indoor unit temperature information;

[0024] When the current operating frequency and the maximum temperature difference meet the temperature-reaching shutdown condition, it is determined whether the maximum temperature difference of each indoor air conditioner unit meets the first low-temperature continuous condition.

[0025] To reduce the output cooling capacity, the side and bottom air outlets of each indoor air conditioning unit that meets the first low-temperature continuous condition are opened simultaneously.

[0026] Optionally, after the step of simultaneously opening the side and bottom air outlets of each indoor air conditioning unit whose maximum temperature difference satisfies the first low-temperature sustained condition to reduce the output cooling capacity, the method further includes:

[0027] Determine whether the maximum temperature difference between each indoor air conditioner unit meets the second low-temperature duration condition;

[0028] The side air outlets of each indoor air conditioning unit that meets the second low-temperature continuous condition for maximum temperature difference are closed to reduce the output cooling capacity.

[0029] Furthermore, to achieve the above objectives, this application also proposes an air conditioning operation control device, which includes:

[0030] The information acquisition module is used to calculate the compressor frequency information based on the indoor unit temperature information of each air conditioner when each indoor unit is running in a preset mode.

[0031] The operation control module is used to control the operation of the air outlets of each indoor air conditioner unit based on the indoor unit temperature information and the compressor frequency information.

[0032] In addition, to achieve the above objectives, this application also proposes an air conditioner, which includes: a memory, a processor, and a computer program stored in the memory and executable on the processor, the computer program being configured to implement the steps of the air conditioner operation control method described above.

[0033] In addition, to achieve the above objectives, this application also proposes a storage medium, which is a computer-readable storage medium, on which a computer program is stored, and when the computer program is executed by a processor, it implements the steps of the air conditioning operation control method described above.

[0034] In addition, to achieve the above objectives, this application also provides a computer program product, which includes a computer program that, when executed by a processor, implements the steps of the air conditioning operation control method described above.

[0035] One or more technical solutions proposed in this application have at least the following technical effects:

[0036] This application calculates compressor frequency information based on the indoor unit temperature information of each indoor unit when each indoor unit is running in a preset mode; and controls the operation of the air outlet of each indoor unit based on the indoor unit temperature information and the compressor frequency information. In this way, a multi-split air conditioning cooling mode operation control method is proposed based on an integrated side-discharge and bottom-discharge indoor unit. By utilizing the load output changes in the combined side-discharge and bottom-discharge mode of the indoor unit, the adaptive adjustment capability of the indoor unit's terminal output according to the actual load scenario is expanded, increasing the range of energy demand matching, thereby reducing frequent compressor start-stop and improving user energy efficiency and comfort. Attached Figure Description

[0037] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0038] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0039] Figure 1 This is a flowchart illustrating an embodiment of the air conditioning operation control method of this application.

[0040] Figure 2 This is a schematic diagram showing the structure and air outlet state of an indoor unit in an embodiment of the air conditioner of this application;

[0041] Figure 3 A schematic diagram showing the setting of the temperature sensor in the indoor unit of the air conditioner in this application;

[0042] Figure 4 This is a flowchart illustrating Embodiment 2 of the air conditioning operation control method of this application;

[0043] Figure 5 This is a schematic diagram of the module structure of the air conditioning operation control device according to an embodiment of this application;

[0044] Figure 6 This is a schematic diagram of the equipment structure of the hardware operating environment involved in the air conditioning operation control method in the embodiments of this application.

[0045] Explanation of icon numbers:

[0046] Indoor heat exchanger 21, indoor fan 22, air outlet assembly 23, first air guide assembly 24, second air guide assembly 25;

[0047] Side air outlet 201, bottom air outlet 202, first switch door 231, second switch door 232.

[0048] The purpose, features, and advantages of this application will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0049] It should be understood that the specific embodiments described herein are merely illustrative of the technical solutions of this application and are not intended to limit this application.

[0050] To better understand the technical solution of this application, a detailed description will be provided below in conjunction with the accompanying drawings and specific implementation methods.

[0051] The main solution of this application embodiment is: when each indoor air conditioner unit is running in a preset mode, the compressor frequency information is calculated based on the indoor unit temperature information of each indoor air conditioner unit; and the air outlet operation control of each indoor air conditioner unit is performed based on the indoor unit temperature information and the compressor frequency information.

[0052] In this embodiment, for ease of description, the following description uses a multi-split air conditioner as the subject of execution.

[0053] Existing conventional multi-split air conditioning indoor units typically use side-discharge airflow. This single airflow configuration results in simple airflow organization at the terminal and a limited load output adjustment method, relying solely on indoor fan speed. This invention proposes an integrated side-discharge and bottom-discharge indoor unit and its control method in multi-split air conditioning unit cooling mode operation. Multi-split air conditioning systems have a wide load demand range, but users primarily operate under low load conditions. Therefore, during cooling operation, this can lead to a situation where the compressor is overloaded, resulting in frequent temperature-reaching start-stop cycles under low load conditions, which is neither energy-efficient nor comfortable. Therefore, this invention proposes an operation control method for multi-split air conditioning in cooling mode based on an integrated side-discharge and bottom-discharge indoor unit. By utilizing the load output variations under the combined side-discharge and bottom-discharge airflow mode, the method expands the adaptive adjustment capability of the indoor unit's terminal output according to actual load scenarios, increasing the range of energy demand matching, thereby reducing frequent compressor start-stop cycles and improving user energy efficiency and comfort.

[0054] This application provides a solution that realizes an operation control method for multi-split air conditioning in cooling mode based on an indoor unit with integrated side and bottom air outlets. By utilizing the load output changes in the combined side and bottom air outlet mode of the indoor unit, the adaptive adjustment capability of the indoor unit's terminal output according to the actual load scenario is expanded, increasing the range of energy demand matching, thereby reducing the frequent start and stop of the compressor and improving the user's energy efficiency and comfort.

[0055] It should be noted that the executing entity in this embodiment can be a computing service device with data processing, network communication, and program execution functions, such as a tablet computer, personal computer, or mobile phone, or an electronic device, air conditioner, or multi-split air conditioner capable of performing the above functions. The following description uses a multi-split air conditioner as an example to illustrate this embodiment and the subsequent embodiments.

[0056] Based on this, the embodiments of this application provide an air conditioning operation control method, referring to... Figure 1 , Figure 1 This is a flowchart illustrating the first embodiment of the air conditioning operation control method of this application.

[0057] In this embodiment, the air conditioning operation control method includes steps S10 to S40:

[0058] In this embodiment, the control method for the air conditioner is applied to the air conditioner, which includes an outdoor unit and at least one indoor unit. The outdoor unit is connected to each indoor unit, and the indoor unit includes a side air outlet and a bottom air outlet.

[0059] In this embodiment, the air conditioner refers to a multi-split air conditioner, which is an air conditioner with an outdoor unit connected to multiple indoor units, capable of simultaneously adjusting parameters such as air temperature, humidity, cleanliness, and airflow in multiple rooms, including but not limited to cooling, heating, and fresh air circulation modes.

[0060] Understandably, referring to Figure 2 The air conditioner includes an indoor unit, which has at least two air outlets with different orientations and different air resistances. In this embodiment, the indoor unit includes a side air outlet and a bottom air outlet, with the bottom air outlet having a greater air resistance than the side air outlet.

[0061] In this embodiment, the indoor unit of the air conditioner is a ducted unit. The installation height of the indoor unit is higher than the height of a person.

[0062] An indoor air duct is provided inside the air conditioner indoor unit, and at least two air outlets are connected to the indoor air duct. An indoor heat exchanger 21 and an indoor fan 22 are provided in the indoor air duct. The indoor fan 22 can drive indoor air into the indoor air duct to exchange heat with the indoor heat exchanger 21 and then send it into the room from at least one air outlet.

[0063] In this embodiment, the indoor unit of the air conditioner includes a housing, which includes a bottom plate and a side plate connected to the bottom plate. The bottom plate is provided with a lower air outlet 202, and the side plate is provided with a side air outlet 201. Both the lower air outlet 202 and the side air outlet 201 are connected to the indoor air duct.

[0064] The base plate is the plate located at the bottom of the casing when the indoor unit of the air conditioner is installed in the indoor space, and the side plates are the plates on the casing that are adjacent to the base plate. When the indoor unit of the air conditioner is installed in the indoor space, the angle between the side plate and the wall of the indoor space (for example, 0 degrees) is smaller than the angle between the base plate and the wall of the indoor space (for example, 90 degrees).

[0065] The air outlet surface of the lower air outlet 202 and the air outlet surface of the side air outlet 201 may be arranged to intersect (see reference). Figure 2Alternatively, the air outlets can be arranged without intersecting each other; this embodiment does not impose any restrictions on this. Without the guidance of the air guide assembly, the air outlet 202 directs downwards (vertically downwards or at an angle less than or equal to 45° with the vertical direction), while the side air outlet 201 directs horizontally (along the horizontal direction or at an angle less than or equal to 45° with the horizontal direction). In this embodiment, the air outlet surface of the lower air outlet 202 is perpendicular to the air outlet surface of the side air outlet 201.

[0066] Without the assistance of air guiding components during the operation of the indoor fan 22, the air resistance when the air in the indoor duct exits from the lower air outlet 202 is greater than the air resistance when the air in the indoor duct exits from the side air outlet 201. In other words, when the indoor fan 22 rotates at the same speed, the air volume exiting from the lower air outlet 202 is less than the air volume exiting from the side air outlet 201. In this embodiment, the area of ​​the lower air outlet 202 is smaller than the area of ​​the side air outlet 201, and the angle between the air outlet direction of the indoor fan 22 and the air outlet surface of the side air outlet 201 is greater than the angle between the air outlet direction and the air outlet surface of the lower air outlet 202. That is, the air outlet direction of the indoor fan 22 is towards the side air outlet 201 and not towards the lower air outlet 202.

[0067] When the air conditioner indoor unit discharges air through the lower air outlet 202, the discharged air can not only regulate the air temperature of the indoor space, but also regulate the temperature of the indoor space's enclosure structure.

[0068] In other embodiments, at least two air outlets may also be located on the side of the indoor unit of the air conditioner, or the air outlets may have the same direction of airflow when they are fully open.

[0069] In this embodiment, the indoor unit of the air conditioner also includes an air outlet assembly 23, which is configured to adjust the air outlet state of the at least two air outlets, and can adjust the opening and / or closing of each air outlet and / or adjust the air volume.

[0070] The air outlet assembly 23 can be a single, integral structure or composed of more than one switch door. When the air outlet assembly 23 includes more than one switch door, the air outlet can correspond one-to-one with the switch door, and each switch door can adjust the air outlet state of its corresponding air outlet; or, some switch doors can simultaneously adjust the air outlet state of different air outlets.

[0071] In this embodiment, an air outlet assembly 23 is installed in the indoor air duct. The position of the air outlet assembly 23 can be changed to allow the lower air outlet 202 and the side air outlet 201 to cooperate in different air outlet states:

[0072] Reference Figure 2 The dotted line indicates the airflow direction. When the air outlet assembly 23 is in the first position, both the lower air outlet 202 and the side air outlet 201 are open.

[0073] In this embodiment, the air outlet assembly 23 includes a first switch door 231 and a second switch door 232, and the side air outlet 201 includes a first air outlet area and a second air outlet area. The first switch door 231 is configured to adjust the air volume of the first air outlet area, and the second switch door 232 is configured to adjust the air volume of the second air outlet area and the lower air outlet 202.

[0074] In this embodiment, the first air outlet area is the upper air outlet area away from the lower air outlet 202, and the second air outlet area is the lower air outlet area close to the lower air outlet 202. The first switch door 231 is rotatably installed on the upper side of the side air outlet 201 and can adjust the air volume of the upper air outlet area. The second switch door 232 is rotatably installed at the adjacent position between the lower air outlet 202 and the side air outlet 201. When the second switch door 232 rotates, it can simultaneously adjust the air volume of the lower air outlet area and the lower air outlet 202.

[0075] Reference Figure 2 The first position includes the first switch door 231 being in the first position and the second switch door 232 being in the second position. In the second position, the second switch door 232 simultaneously opens the second air outlet area and the lower air outlet 202, and at this time, the side air outlets 201 are fully open. The first switch door 231 and the second switch door 232 cooperate to open the lower air outlet 202 and the side air outlets 201, and the air from the indoor fan 22 is blown into the room from the lower air outlet 202 and the side air outlets 201 under the combined airflow guiding effect of the first switch door 231 and the second switch door 232.

[0076] In other embodiments, the air outlet assembly 23 may also include a third switch door rotatably mounted between the lower air outlet 202 and the side air outlet 201. The third switch door can switch between a first operating device, a second operating position, and a third operating position. The first operating position is the position where the lower air outlet 202 is closed and the side air outlet 201 is open. The second operating position is the position where the side air outlet 201 is closed and the lower air outlet 202 is open. The third operating position is the position where both the lower air outlet 202 and the side air outlet 201 are open simultaneously.

[0077] In one embodiment, the indoor unit of the air conditioner may further include a first air guide assembly 24, which may be disposed at the lower air outlet 202 and located outside the indoor air duct, and the first air guide assembly 24 may be installed on the housing.

[0078] The first air guide assembly 24 can open or close the lower air outlet 202, and adjust the air outlet direction of the lower air outlet 202 when the lower air outlet 202 is opened.

[0079] In one embodiment, the indoor unit of the air conditioner may further include a second air guide assembly 25, which may be disposed at the side air outlet 201 and located outside the indoor air duct, and the second air guide assembly 25 may be installed on the housing.

[0080] The second air guide assembly 25 can open or close the side air outlet 201, and adjust the air outlet direction of the side air outlet 201 when the side air outlet 201 is opened.

[0081] In one embodiment, the air conditioner includes a refrigerant circulation loop, which includes the aforementioned indoor unit, throttling device, outdoor heat exchanger, reversing assembly, and compressor, with the compressor connected to the indoor unit.

[0082] The compressor's exhaust port, compressor's return port, outdoor heat exchanger, and indoor heat exchanger 21 are all connected to the reversing assembly. The reversing assembly has a first operating state and a second operating state. When the reversing assembly is in the first operating state, the exhaust port is connected to the outdoor heat exchanger and the return port is connected to the indoor heat exchanger 21. When the reversing assembly is in the second operating state, the exhaust port is connected to the indoor heat exchanger 21 and the return port is connected to the outdoor heat exchanger.

[0083] The indoor unit of the air conditioner also includes a first temperature sensor (not shown), which can be installed in the indoor air duct and located on the air outlet side of the indoor fan 22 to detect the air outlet temperature of the indoor unit.

[0084] The indoor unit of the air conditioner also includes a second temperature sensor (not shown), which can be installed on the coil of the indoor heat exchanger 21 to detect the temperature of the indoor heat exchanger 21.

[0085] like Figure 3 As shown, for example, indoor unit 1 includes a side air outlet and a bottom air outlet. The indoor unit is equipped with multiple temperature sensors to detect the temperature of each component in the indoor unit, including temperature sensor T2B, temperature sensor T2, and air outlet temperature sensor. The temperature sensor T2 is placed in the middle of the evaporator, the temperature sensor T2B is placed at the evaporator outlet in the direction of the cooling flow, and the air outlet temperature sensor is placed at the intersection of the side air outlet and the bottom air outlet.

[0086] Step S10: When each indoor unit of the air conditioner is running in the preset mode, calculate the compressor frequency information based on the indoor unit temperature information of each indoor unit.

[0087] It should be noted that the air conditioner in this embodiment is as follows: Figure 2 As shown, the air conditioner includes: an outdoor unit and at least one indoor unit. The indoor unit is an integrated side-discharge and bottom-discharge air conditioner. The side and bottom air outlets included in the indoor unit are as follows: Figure 3As shown, in this embodiment, the area of ​​the side air outlet is larger than that of the bottom air outlet. The area of ​​the air outlet can also be adjusted according to actual needs, and this embodiment does not impose any restrictions on this.

[0088] In practical implementation, T1: indoor return air temperature of each indoor unit; Ts: set temperature of each indoor unit; F: current operating frequency of the multi-split system; Fmin: minimum operating frequency of the system in the current cooling mode.

[0089] It should be understood that when a multi-split air conditioner is running, it needs to output a large amount of cooling capacity during the initial cooling phase to ensure the temperature reduction effect under high load demand. However, if the cooling capacity is excessively output after the operation reaches the low load phase, it will cause the room to become too cold. If all the rooms where the indoor units are located are too cold, and the compressor frequency of the main unit has reached its minimum output, it is very easy to cause the main unit to shut down when the temperature is reached if no other means of adjusting the output are taken. This solution combines the characteristics of the side air outlet and bottom air outlet structure of the indoor unit, and flexibly switches the side air outlet and bottom air outlet modes according to the load demand. On the one hand, it ensures a large cooling capacity output during the high load phase, and on the other hand, it minimizes the possibility of shutdown when the temperature is reached during the low load phase.

[0090] In practice, at the same fan speed, a larger side outlet area results in a larger cooling capacity. If all air is output from the side outlet, the cooling capacity is maximized. If both the bottom and side outlets are outleted simultaneously, the same airflow is distributed between the two vertical outlets, reducing air pressure and thus decreasing the cooling capacity. If all air is output from the bottom outlet, the cooling capacity is further reduced because the bottom outlet area is smaller than the side outlet area. Therefore, the cooling capacity output is: side outlet only > side outlet + bottom outlet > bottom outlet only.

[0091] It should be noted that when each indoor unit first starts running in cooling mode, it defaults to "side air outlet only" mode, which is the preset mode.

[0092] It should be understood that after determining that each indoor air conditioner unit is operating in the preset mode, the temperature information of each indoor air conditioner unit is first collected. Then, the compressor frequency information can be calculated based on the temperature information, and the air outlet switching and control of the indoor air conditioner unit can be further controlled based on the compressor frequency information.

[0093] Step S20: Control the operation of the air outlets of each indoor air conditioner unit based on the indoor unit temperature information and the compressor frequency information.

[0094] In practice, the current operating frequency is first determined, then the temperature is compared to determine the maximum temperature difference, and finally the air outlet of the indoor unit of the air conditioner is controlled based on whether the maximum temperature difference meets the first low temperature continuous condition.

[0095] In a feasible embodiment, in order to accurately control the air outlets of the indoor units of the air conditioner, step S20 includes: determining the current operating frequency according to the compressor frequency information, and determining the maximum temperature difference according to the indoor unit temperature information; when the current operating frequency and the maximum temperature difference satisfy the temperature-reached shutdown condition, determining whether the maximum temperature difference of each indoor unit of the air conditioner satisfies the first low temperature duration condition; simultaneously opening the side air outlet and the lower air outlet of each indoor unit of the air conditioner whose maximum temperature difference satisfies the first low temperature duration condition to reduce the output cooling capacity.

[0096] It should be noted that whether to enter the air outlet combination adjustment of the indoor units is determined according to the current system operating frequency F and the maximum max(T1-Ts) of all indoor units, and the respective air outlet mode of each indoor unit is determined according to T1-Ts of each indoor unit.

[0097] It should be understood that when the operating frequency F is equal to the minimum system operating frequency Fmin (indicating that the compressor has reached the minimum output state at this time), and max(T1-Ts) < DT_thre0 (the temperature-reached shutdown condition is satisfied at this time, which indicates that the user load has changed from a large load demand to a small load demand, and the multi-split air conditioning system is already on the verge of temperature-reached shutdown), the next step of judgment is entered. DT_thre0 is a preset temperature threshold, which can be any value, and this embodiment does not limit this.

[0098] In a specific implementation, it is respectively judged whether the duration of T1-Ts ≤ DT_thre1 of each indoor unit is longer than Dur1. If the condition is satisfied, it indicates that the output of this indoor unit is greater than the load. At this time, simultaneously opening the side air outlet and the lower air outlet can appropriately reduce the output cooling capacity. DT_thre1 is a preset temperature threshold, which can be any value, and this embodiment does not limit this. Dur1 is a preset arbitrary time period, which can be any value, and this embodiment does not limit this.

[0099] In a feasible embodiment, in order to make further adjustment when the output is still excessive when the side air outlet and the lower air outlet are opened simultaneously, after the step of simultaneously opening the side air outlet and the lower air outlet of each indoor unit of the air conditioner whose maximum temperature difference satisfies the first low temperature duration condition to reduce the output cooling capacity, the method further includes: judging whether the maximum temperature difference of each indoor unit of the air conditioner satisfies the second low temperature duration condition; closing the side air outlet of each indoor unit of the air conditioner whose maximum temperature difference satisfies the second low temperature duration condition to reduce the output cooling capacity.

[0100] It should be noted that the next step is to determine whether the duration of T1-Ts≤DT_thre2 is greater than Dur2. If the condition is met, it indicates that the output is still too high when both the side and bottom air outlets are open. In this case, the side air outlet is closed, and only the bottom air outlet is opened to further reduce the output cooling capacity. DT_thre2 is a preset temperature threshold, which can be any value; this embodiment does not limit it. Dur2 is a preset time period, which can be any value; this embodiment does not limit it.

[0101] This embodiment provides an air conditioning operation control method. When each indoor unit of the air conditioner is running according to a preset mode, the compressor frequency information is calculated based on the indoor unit temperature information of each indoor unit. The air outlet operation of each indoor unit is then controlled based on the indoor unit temperature information and the compressor frequency information. In this way, an operation control method for multi-split air conditioning in cooling mode is proposed, based on an integrated side-discharge and bottom-discharge indoor unit. By utilizing the load output changes in the combined side-discharge and bottom-discharge mode of the indoor unit, the adaptive adjustment capability of the indoor unit's terminal output according to the actual load scenario is expanded, increasing the range of energy demand matching, thereby reducing frequent compressor start-stop and improving user energy efficiency and comfort.

[0102] Based on the first embodiment of this application, in the second embodiment of this application, the content that is the same as or similar to that in Embodiment 1 above can be referred to the above description, and will not be repeated hereafter. Based on this, please refer to... Figure 4 Step S10 includes steps S101 to S103:

[0103] Step S101: When each indoor air conditioner unit is running in a preset mode, control each indoor air conditioner unit to cool through the side air outlet, and obtain the set temperature and return air temperature information of each indoor air conditioner unit.

[0104] It should be noted that, firstly, each indoor air conditioner unit is initialized in the preset mode, cooling is performed only through the side air outlet, and then the set temperature and return air temperature information of the indoor air conditioner unit are collected.

[0105] Step S102: Determine the target evaporation temperature of the air conditioner based on the set temperature and return air temperature information of each indoor unit.

[0106] It should be understood that after determining the set temperature and return air temperature information, a calculation is performed to obtain the target evaporation temperature of the air conditioner, specifically by calculating the difference between the set temperature and the return air temperature.

[0107] In one feasible implementation, in order to accurately calculate the target evaporation temperature, step S102 includes: calculating the maximum temperature difference between each indoor air conditioner unit based on the set temperature and return air temperature information of each indoor air conditioner unit; and determining the target evaporation temperature of the air conditioner based on the maximum temperature difference.

[0108] In practice, calculate T1-Ts for each indoor unit that is turned on, and obtain the maximum (T1-Ts) for all indoor units, denoted as max(T1-Ts).

[0109] It should be noted that the system objective T2 is determined based on max(T1-Ts) using the following formula:

[0110] T2_target=T2_past-C0*max(T1-Ts)

[0111] Where T2_past is the target T2_target of the previous time step, and its initial value is the preset value T2_target_ini.

[0112] It should be understood that C0 in the formula is determined according to the following rules:

[0113] When DW_DT1≤max(T1-Ts)≤DW_DT2, C0=0; (at this time, T2_target remains unchanged and is in the equilibrium hysteresis region);

[0114] When max(T1-Ts) < DW_DT1, C0 = Kdown_T2 (K1_T2 > 0, which is the preset value) (at this time, T2_target will increase).

[0115] When max(T1-Ts)>DW_DT2, C0=Kup_T2 (K1_T2>0, which is the preset value) (at this time, T2_target will decrease).

[0116] Wherein, DW_DT1 and DW_DT2 are preset temperature thresholds, which can be any values, and this embodiment does not limit them.

[0117] Step S103: Determine the compressor frequency information based on the target evaporation temperature.

[0118] In practice, to accurately determine the compressor frequency information, it is necessary to first calculate the actual evaporation temperature of the air conditioner, and then compare the actual evaporation temperature with the target evaporation temperature to determine the compressor frequency information.

[0119] In one feasible implementation, in order to finally determine the compressor frequency, step S103 includes: calculating the actual average evaporation temperature of each indoor air conditioner unit; and determining compressor frequency information based on the target evaporation temperature and the actual average evaporation temperature.

[0120] It should be noted that after calculating the actual average evaporation temperature, the current compressor operating frequency F is determined according to the frequency adjustment values ​​in Table 1 below, based on the difference X = T2_mean - T2_target between T2_mean and T2_target.

[0121] Table 1

[0122]

[0123] In one feasible implementation, in order to determine the actual average evaporation temperature, the step of calculating the actual average evaporation temperature of each indoor air conditioner unit includes: obtaining the rated capacity information of each indoor air conditioner unit; and performing a weighted average of the target evaporation temperature based on the rated capacity information to obtain the actual average evaporation temperature.

[0124] It should be noted that the actual T2 value of each indoor unit is obtained in real time, and the T2 value of the system is weighted and averaged according to the rated capacity of different indoor units to obtain the actual average T2 value of the current system. For example, if there are currently n indoor units with energy requirements, and their nominal capacities are n1, n2, n3...nx KW, and their corresponding T2 temperatures are T21, T22, T23...T2x °C, then...

[0125] T2_mean=(n1*T21+n2*T22+n3*T23+...+nx*T2x) / (n1+n2+n3+...+nx).

[0126] This embodiment controls each indoor air conditioner to cool through the side air outlet when operating in a preset mode, and acquires the set temperature and return air temperature information of each indoor unit. Based on these information, the target evaporation temperature of the air conditioner is determined; and the compressor frequency information is determined based on the target evaporation temperature. In this way, load output variations are achieved using a combination of side and bottom air outlets from the indoor units, expanding the adaptive adjustment capability of the indoor unit's terminal output according to actual load scenarios, increasing the range of energy demand matching, thereby reducing frequent compressor start-stop cycles and improving user energy efficiency and comfort.

[0127] It should be noted that the above examples are only for understanding this application and do not constitute a limitation on the air conditioning operation control method of this application. Any simple modifications based on this technical concept are within the protection scope of this application.

[0128] This application also provides an air conditioning operation control device, please refer to... Figure 5 The air conditioning operation control device includes:

[0129] The information acquisition module 10 is used to calculate the compressor frequency information based on the indoor unit temperature information of each indoor unit when each indoor unit of the air conditioner is running in a preset mode.

[0130] The operation control module 20 is used to control the operation of the air outlets of each indoor air conditioner based on the indoor unit temperature information and the compressor frequency information.

[0131] In this embodiment, when each indoor unit of the air conditioner is running in a preset mode, the compressor frequency information is calculated based on the indoor unit temperature information of each indoor unit. The air outlet operation of each indoor unit is then controlled based on the indoor unit temperature information and the compressor frequency information. In this way, a multi-split air conditioning cooling mode operation control method is proposed based on an integrated side-discharge and bottom-discharge indoor unit. By utilizing the load output changes in the combined side-discharge and bottom-discharge mode of the indoor unit, the adaptive adjustment capability of the indoor unit's terminal output according to the actual load scenario is expanded, increasing the range of energy demand matching, thereby reducing the frequent start-stop of the compressor and improving user energy efficiency and comfort.

[0132] In one embodiment, the information acquisition module 10 is further configured to control each indoor air conditioner to cool through the side air outlet when each indoor air conditioner is running in a preset mode, and to acquire the set temperature and return air temperature information of each indoor air conditioner; determine the target evaporation temperature of the air conditioner based on the set temperature and return air temperature information of each indoor air conditioner; and determine the compressor frequency information based on the target evaporation temperature.

[0133] In one embodiment, the information acquisition module 10 is further configured to calculate the maximum temperature difference between each indoor air conditioner unit based on the set temperature and return air temperature information of each indoor air conditioner unit; and determine the target evaporation temperature of the air conditioner based on the maximum temperature difference.

[0134] In one embodiment, the information acquisition module 10 is further configured to calculate the actual average evaporation temperature of each indoor air conditioner unit; and determine compressor frequency information based on the target evaporation temperature and the actual average evaporation temperature.

[0135] In one embodiment, the information acquisition module 10 is further configured to acquire the rated capacity information of each indoor air conditioner unit; and to perform a weighted average of the target evaporation temperature based on the rated capacity information to obtain the actual average evaporation temperature.

[0136] In one embodiment, the operation control module 20 is further configured to determine the current operating frequency based on the compressor frequency information and the maximum temperature difference based on the indoor unit temperature information; when the current operating frequency and the maximum temperature difference meet the temperature-reaching shutdown condition, determine whether the maximum temperature difference of each indoor unit meets the first low-temperature continuous condition; and simultaneously open the side air outlet and the bottom air outlet of each indoor unit whose maximum temperature difference meets the first low-temperature continuous condition to reduce the output cooling capacity.

[0137] In one embodiment, the operation control module 20 is further configured to determine the current operating frequency based on the compressor frequency information and the maximum temperature difference based on the indoor unit temperature information; when the current operating frequency and the maximum temperature difference meet the temperature-reaching shutdown condition, determine whether the maximum temperature difference of each indoor unit meets the first low-temperature continuous condition; and simultaneously open the side air outlet and the bottom air outlet of each indoor unit whose maximum temperature difference meets the first low-temperature continuous condition to reduce the output cooling capacity.

[0138] The air conditioning operation control device provided in this application, employing the air conditioning operation control method in the above embodiments, can solve the technical problem of frequent temperature-reaching start-stop cycles in the side-discharge cooling of the air conditioner, which is neither energy-efficient nor comfortable. Compared with the prior art, the beneficial effects of the air conditioning operation control device provided in this application are the same as those of the air conditioning operation control method provided in the above embodiments, and other technical features in the air conditioning operation control device are the same as those disclosed in the methods of the above embodiments, and will not be repeated here.

[0139] This application provides an air conditioner, which includes: at least one processor; and a memory communicatively connected to the at least one processor; wherein the memory stores instructions executable by the at least one processor, the instructions being executed by the at least one processor to enable the at least one processor to perform the air conditioner operation control method in Embodiment 1 above.

[0140] The following is for reference. Figure 6 The diagram illustrates a structural schematic of an air conditioner suitable for implementing embodiments of this application. The air conditioner in these embodiments may include, but is not limited to, mobile terminals such as mobile phones, laptops, digital broadcast receivers, PDAs (Personal Digital Assistants), PADs (Portable Application Descriptions), PMPs (Portable Media Players), in-vehicle terminals (e.g., in-vehicle navigation terminals), and fixed terminals such as digital TVs and desktop computers. Figure 6 The air conditioner shown is merely an example and should not be construed as limiting the functionality and scope of use of the embodiments of this application.

[0141] like Figure 6 As shown, the air conditioner may include a processing device 1001 (e.g., a central processing unit, a graphics processor, etc.) that can perform various appropriate actions and processes according to a program stored in a read-only memory (ROM) 1002 or a program loaded from a storage device 1003 into a random access memory (RAM) 1004. The RAM 1004 also stores various programs and data required for the operation of the air conditioner. The processing device 1001, ROM 1002, and RAM 1004 are interconnected via a bus 1005. An input / output (I / O) interface 1006 is also connected to the bus. Typically, the following systems can be connected to the I / O interface 1006: input devices 1007 including, for example, a touchscreen, touchpad, keyboard, mouse, image sensor, microphone, accelerometer, gyroscope, etc.; output devices 1008 including, for example, a liquid crystal display (LCD), speaker, vibrator, etc.; storage devices 1003 including, for example, magnetic tape, hard disk, etc.; and communication devices 1009. The communication device 1009 allows the air conditioner to communicate wirelessly or wiredly with other devices to exchange data. Although the figure shows an air conditioner with various systems, it should be understood that it is not required to implement or have all of the systems shown. More or fewer systems may be implemented alternatively.

[0142] Specifically, according to the embodiments disclosed in this application, the processes described above with reference to the flowcharts can be implemented as computer software programs. For example, embodiments disclosed in this application include a computer program product comprising a computer program carried on a computer-readable medium, the computer program containing program code for performing the methods shown in the flowcharts. In such embodiments, the computer program can be downloaded and installed from a network via a communication device, or installed from storage device 1003, or installed from ROM 1002. When the computer program is executed by processing device 1001, it performs the functions defined in the methods of the embodiments disclosed in this application.

[0143] The air conditioner provided in this application, employing the air conditioning operation control method described in the above embodiments, can solve the technical problem of frequent temperature-reaching start-stop cycles in air conditioners with side-discharge cooling, resulting in neither energy efficiency nor comfort. Compared with the prior art, the beneficial effects of the air conditioner provided in this application are the same as those of the air conditioning operation control method provided in the above embodiments, and other technical features of this air conditioner are the same as those disclosed in the previous embodiment method, and will not be repeated here.

[0144] It should be understood that the various parts disclosed in this application can be implemented using hardware, software, firmware, or a combination thereof. In the description of the above embodiments, specific features, structures, materials, or characteristics can be combined in any suitable manner in one or more embodiments or examples.

[0145] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

[0146] This application provides a computer-readable storage medium having computer-readable program instructions (i.e., a computer program) stored thereon, the computer-readable program instructions being used to execute the air conditioning operation control method in the above embodiments.

[0147] The computer-readable storage medium provided in this application may be, for example, a USB flash drive, but is not limited to, electrical, magnetic, optical, electromagnetic, infrared, or semiconductor systems, devices, or any combination thereof. More specific examples of computer-readable storage media may include, but are not limited to: electrical connections having one or more wires, portable computer disks, hard disks, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM or flash memory), optical fiber, portable compact disk read-only memory (CD-ROM), optical storage devices, magnetic storage devices, or any suitable combination thereof. In this embodiment, the computer-readable storage medium may be any tangible medium containing or storing a program that can be used by or in conjunction with an instruction execution system, system, or device. The program code contained on the computer-readable storage medium may be transmitted using any suitable medium, including but not limited to: wires, optical cables, RF (Radio Frequency), etc., or any suitable combination thereof.

[0148] The aforementioned computer-readable storage medium may be included in the air conditioner; or it may exist independently and not be installed in the air conditioner.

[0149] The aforementioned computer-readable storage medium carries one or more programs, which, when executed by the air conditioner, cause the air conditioner to: calculate compressor frequency information based on the indoor unit temperature information of each indoor unit when each indoor unit is running in a preset mode; and control the operation of the air outlet of each indoor unit based on the indoor unit temperature information and the compressor frequency information.

[0150] Computer program code for performing the operations of this application can be written in one or more programming languages ​​or a combination thereof, including object-oriented programming languages ​​such as Java, Smalltalk, and C++, and conventional procedural programming languages ​​such as the "C" language or similar programming languages. The program code can be executed entirely on the user's computer, partially on the user's computer, as a standalone software package, partially on the user's computer and partially on a remote computer, or entirely on a remote computer or server. In cases involving remote computers, the remote computer can be connected to the user's computer via any type of network—including a Local Area Network (LAN) or a Wide Area Network (WAN)—or can be connected to an external computer (e.g., via the Internet using an Internet service provider).

[0151] 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 various embodiments of this application. 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. It should also be noted that in some alternative implementations, the functions indicated in the blocks may occur in a different order than those indicated in the drawings. For example, two consecutively indicated blocks may actually be executed substantially in parallel, and they may sometimes be executed in reverse order, depending on the functions involved. It should also be noted that each block in the block diagrams and / or flowcharts, and combinations of blocks in the block diagrams and / or flowcharts, can be implemented using a dedicated hardware-based system that performs the specified function or operation, or using a combination of dedicated hardware and computer instructions.

[0152] The modules described in the embodiments of this application can be implemented in software or hardware. The names of the modules do not necessarily limit the functionality of the unit itself.

[0153] The readable storage medium provided in this application is a computer-readable storage medium that stores computer-readable program instructions (i.e., a computer program) for executing the above-described air conditioning operation control method. This solves the technical problem of frequent temperature-reaching and temperature-stopping cycles in air conditioners, resulting in neither energy efficiency nor comfort. Compared with the prior art, the beneficial effects of the computer-readable storage medium provided in this application are the same as those of the air conditioning operation control method provided in the above embodiments, and will not be elaborated upon here.

[0154] This application also provides a computer program product, including a computer program that, when executed by a processor, implements the steps of the air conditioning operation control method described above.

[0155] The computer program product provided in this application can solve the technical problem of frequent temperature-reaching and restarting of air conditioning units with side-discharge cooling, which is neither energy-efficient nor comfortable. Compared with the prior art, the beneficial effects of the computer program product provided in this application are the same as those of the air conditioning operation control method provided in the above embodiments, and will not be repeated here.

[0156] The above description is only a part of the embodiments of this application and does not limit the patent scope of this application. All equivalent structural transformations made under the technical concept of this application and using the contents of the specification and drawings of this application, or direct / indirect applications in other related technical fields, are included in the patent protection scope of this application.

Claims

1. An air conditioning operation control method, characterized in that, The air conditioning operation control method is applied to an air conditioner, which includes an outdoor unit and at least one indoor unit. The outdoor unit is connected to each indoor unit, and the indoor unit includes a side air outlet and a bottom air outlet. The air conditioning operation control method includes: When each indoor unit of the air conditioner is running in a preset mode, the compressor frequency information is calculated based on the indoor unit temperature information of each indoor unit. Specifically, this includes: controlling each indoor unit to cool through the side air outlet while it is running in a preset mode, and acquiring the set temperature and return air temperature information of each indoor unit; calculating the maximum temperature difference between each indoor unit based on the set temperature and return air temperature information, and calculating the target evaporation temperature of the air conditioner based on the maximum temperature difference; acquiring the rated capacity information of each indoor unit, and performing a weighted average of the target evaporation temperature based on the rated capacity information to obtain the actual average evaporation temperature; and determining the compressor frequency information based on the target evaporation temperature and the actual average evaporation temperature. The operation control of the air outlets of each indoor air conditioner unit is performed based on the indoor unit temperature information and the compressor frequency information. Specifically, when the current operating frequency and the maximum temperature difference meet the temperature-reaching shutdown condition, the side air outlets and the bottom air outlets of each indoor air conditioner unit whose maximum temperature difference meets the first low-temperature continuous condition are opened simultaneously to reduce the output cooling capacity. The maximum temperature difference is determined based on the indoor unit temperature information, and the current operating frequency is determined based on the compressor frequency information.

2. The method as described in claim 1, characterized in that, The step of controlling the operation of the air outlets of each indoor air conditioner unit based on the indoor unit temperature information and the compressor frequency information includes: The current operating frequency is determined based on the compressor frequency information, and the maximum temperature difference is determined based on the indoor unit temperature information; When the current operating frequency and the maximum temperature difference meet the temperature-reaching shutdown condition, it is determined whether the maximum temperature difference of each indoor air conditioner unit meets the first low-temperature continuous condition. To reduce the output cooling capacity, the side and bottom air outlets of each indoor air conditioning unit that meets the first low-temperature continuous condition are opened simultaneously.

3. The method as described in claim 2, characterized in that, The step of simultaneously opening the side and bottom air outlets of each indoor air conditioner unit whose maximum temperature difference meets the first low-temperature sustained condition to reduce the output cooling capacity further includes: Determine whether the maximum temperature difference between each indoor air conditioner unit meets the second low-temperature duration condition; The side air outlets of each indoor air conditioning unit that meets the second low-temperature continuous condition for maximum temperature difference are closed to reduce the output cooling capacity.

4. An air conditioning operation control device, characterized in that, The air conditioning operation control device is applied to an air conditioner, which includes an outdoor unit and at least one indoor unit. The outdoor unit is connected to each indoor unit, and each indoor unit includes a side air outlet and a bottom air outlet. The device includes: The information acquisition module is used to calculate the compressor frequency information based on the indoor unit temperature information of each air conditioner when each indoor unit is running in a preset mode. The operation control module is used to control the operation of the air outlets of each indoor air conditioner based on the indoor unit temperature information and the compressor frequency information. The operation control module is further configured to control each indoor air conditioner to cool through the side air outlet when each indoor air conditioner is running in a preset mode, and to acquire the set temperature and return air temperature information of each indoor air conditioner; calculate the maximum temperature difference between each indoor air conditioner based on the set temperature and return air temperature information of each indoor air conditioner, and calculate the target evaporation temperature of the air conditioner based on the maximum temperature difference; acquire the rated capacity information of each indoor air conditioner, perform a weighted average of the target evaporation temperature based on the rated capacity information to obtain the actual average evaporation temperature, and determine the compressor frequency information based on the target evaporation temperature and the actual average evaporation temperature; The operation control module is also used to simultaneously open the side air outlets and bottom air outlets of each air conditioner indoor unit whose maximum temperature difference meets the first low temperature continuous condition when the current operating frequency and the maximum temperature difference meet the temperature-reaching shutdown condition, so as to reduce the output cooling capacity. The maximum temperature difference is determined according to the indoor unit temperature information, and the current operating frequency is determined according to the compressor frequency information.

5. An air conditioner, characterized in that, The air conditioner includes: a memory, a processor, and a computer program stored in the memory and executable on the processor, the computer program being configured to implement the steps of the air conditioner operation control method as described in any one of claims 1 to 3.

6. A storage medium, characterized in that, The storage medium is a computer-readable storage medium, and a computer program is stored on the storage medium. When the computer program is executed by a processor, it implements the steps of the air conditioning operation control method as described in any one of claims 1 to 3.

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