Control method and system of air conditioning system, electronic equipment and storage medium

Abstract

The invention relates to the technical field of air conditioners, and provides a control method and system of an air conditioning system, electronic equipment and a storage medium. Determining the highest temperature based on the refrigerant temperature of each air conditioner indoor unit; based on the preset temperature interval where the highest temperature is located, the air conditioning system is adjusted; wherein the number of the preset temperature intervals is multiple, and each preset temperature interval corresponds to one set of adjusting parameters of the air conditioning system. According to the control method of the air conditioner system, the indoor unit with the maximum pressure drop at the far end of the refrigerant pipeline can be locked in the air conditioner indoor units in the running state, the control target of the air conditioner refrigerating system is corrected according to the air conditioner indoor unit, and therefore the air conditioner indoor unit with the long refrigerant pipeline can achieve the better refrigerating effect.

Description

Technical Field

[0001] The present invention relates to the technical field of air conditioning, and in particular to a control method, system, electronic equipment and storage medium of an air conditioning system. Background Art

[0002] At present, the control of air conditioning system is generally done by means of pressure sensors and temperature sensors installed on the air conditioner outdoor unit. The pressure and temperature values ​​detected by the pressure sensors and temperature sensors installed on the air conditioner outdoor unit are used to control the action and protection of various components on the air conditioner outdoor unit, so as to realize the operation of the air conditioning system and the cooling and heating of the indoor air conditioner.

[0003] However, this method cannot detect the pressure and temperature values ​​at the far end of the refrigerant pipeline of the air-conditioning system, nor can it grasp the state parameters of the far end of the refrigerant pipeline of the air-conditioning system, and cannot fully meet the refrigeration effect of the far end of the refrigerant pipeline of the air-conditioning system. Because the flow rate is the main part of the pressure loss of the refrigerant pipeline, the flow rate of the refrigerant is particularly critical to the refrigeration effect of the air-conditioning. The extension of the refrigerant pipeline and the drop of the refrigerant pipeline will cause the loss of refrigerant pipeline pressure. The current control scheme cannot dynamically manage the refrigerant flow rate, which affects the refrigeration effect of the indoor unit of the air-conditioning with a long refrigerant pipeline. Summary of the invention

[0004] The embodiments of the present invention provide a control method, system, electronic device and storage medium for an air-conditioning system, which solve the problem that the current control scheme cannot dynamically manage the refrigerant flow, affecting the refrigeration effect of the air-conditioning interior unit with a long refrigerant pipeline.

[0005] An embodiment of the present invention provides a control method for an air conditioning system, the air conditioning system comprising a refrigerant pipeline, an air conditioning outdoor unit and a plurality of air conditioning indoor units, the air conditioning outdoor unit being connected to the plurality of air conditioning indoor units through the refrigerant pipeline, the control method for the air conditioning system comprising:

[0006] Obtaining the refrigerant temperature of the plurality of air conditioner indoor units before heat exchange;

[0007] Based on the refrigerant temperatures of the air conditioner indoor units, determining the highest temperature therein;

[0008] adjusting the air conditioning system based on the preset temperature range in which the maximum temperature is located;

[0009] There are a plurality of preset temperature intervals, and each preset temperature interval corresponds to a set of adjustment parameters of the air-conditioning system.

[0010] According to a control method of an air conditioning system provided by an embodiment of the present invention, the step of adjusting the air conditioning system based on the preset temperature range in which the maximum temperature is located comprises:

[0011] Based on the preset temperature range in which the maximum temperature is located, the opening of the expansion valve of the air conditioner outdoor unit, and / or the compressor frequency, and / or the flow rate of the refrigerant pipeline are adjusted.

[0012] According to a control method for an air conditioning system provided by one embodiment of the present invention, the expansion valve opening of the air conditioning outdoor unit, the compressor frequency and the flow rate of the refrigerant pipeline are positively correlated with the temperature value in the preset temperature range.

[0013] According to a control method of an air conditioning system provided by an embodiment of the present invention, the refrigerant pipeline includes a main pipeline and a plurality of branch pipelines; the air conditioning outdoor unit is connected to the air conditioning indoor unit through the main pipeline and each of the branch pipelines;

[0014] The step of adjusting the flow rate of the refrigerant pipeline includes:

[0015] Adjusting the flow rate of the main pipeline based on the preset temperature range in which the maximum temperature is located;

[0016] And / or, based on the preset temperature range in which the maximum temperature is located, adjusting the flow rate of the branch pipeline.

[0017] According to a control method of an air conditioning system provided by an embodiment of the present invention, the plurality of preset temperature intervals are a first preset temperature interval, a second preset temperature interval, a third preset temperature interval, a fourth preset temperature interval and a fifth preset temperature interval which gradually increase along a temperature gradient;

[0018] The first preset temperature interval, the second preset temperature interval, the third preset temperature interval, the fourth preset temperature interval and the fifth preset temperature interval are all provided with corresponding adjustment parameters for adjusting the expansion valve opening of the air conditioner outdoor unit, and / or the compressor frequency, and / or the flow rate of the refrigerant pipeline.

[0019] According to a control method of an air conditioning system provided by an embodiment of the present invention, the step of obtaining the refrigerant temperature of a plurality of air conditioning indoor units before heat exchange comprises:

[0020] Determining whether each of the air conditioner indoor units is in an operating state;

[0021] The refrigerant temperature of the air conditioner indoor unit in operation before heat exchange is obtained.

[0022] According to a control method for an air-conditioning system provided by one embodiment of the present invention, each of the refrigerant pipelines is provided with a temperature sensor corresponding to each of the air-conditioning indoor units.

[0023] The present invention also provides a control system for an air conditioning system, comprising:

[0024] An acquisition module is used to obtain the refrigerant temperature of multiple air conditioner indoor units before heat exchange;

[0025] A determination module, configured to determine a maximum temperature based on the refrigerant temperature of each of the air conditioner indoor units;

[0026] an adjustment module, configured to adjust the air conditioning system based on a preset temperature range in which the maximum temperature is located;

[0027] There are a plurality of preset temperature intervals, and each preset temperature interval corresponds to a set of adjustment parameters of the air-conditioning system.

[0028] An embodiment of the present invention further provides an electronic device, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the control method of the air-conditioning system is implemented when the processor executes the program.

[0029] An embodiment of the present invention further provides a non-transitory computer-readable storage medium having a computer program stored thereon, and the computer program implements the control method of the air-conditioning system when executed by a processor.

[0030] An embodiment of the present invention also provides a computer program product, which includes a computer program stored on a non-transitory computer-readable storage medium, and the computer program includes program instructions. When the program instructions are executed by a computer, the computer can execute the control method of the air-conditioning system.

[0031] The control method of the air conditioning system provided by the present invention obtains the refrigerant temperature of multiple air conditioning indoor units before heat exchange, determines the highest temperature among them based on the refrigerant temperature of each air conditioning indoor unit, and adjusts the air conditioning system based on the preset temperature range where the highest temperature is located. Through this control method, among the air conditioning indoor units in operation, the indoor unit with the largest pressure drop at the far end of the refrigerant pipeline can be locked, and the control target of the air conditioning refrigeration system can be corrected based on this air conditioning indoor unit, so that the air conditioning indoor unit with a longer refrigerant pipeline can achieve a better cooling effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, a brief introduction is given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0033] Figure 1 is a schematic diagram of an air conditioning system provided by an embodiment of the present invention;

[0034] Figure 2 This is one of the flow charts of a method for controlling an air conditioning system provided by an embodiment of the present invention;

[0035] Figure 3 This is a second flow chart of a method for controlling an air conditioning system provided by an embodiment of the present invention;

[0036] Figure 4 is a control logic diagram of an air conditioner indoor unit provided by an embodiment of the present invention;

[0037] Figure 5 is a control logic diagram of an air conditioner outdoor unit provided by an embodiment of the present invention;

[0038] Figure 6 is a structural schematic diagram of a control system of an air conditioning system provided by an embodiment of the present invention;

[0039] Figure 7 is a schematic diagram of the structure of an electronic device provided by an embodiment of the present invention;

[0040] Reference numerals:

[0041] 10. Refrigerant pipeline; 110. Main pipeline; 120. Branch pipeline; 20. Air conditioner outdoor unit; 30. Air conditioner indoor unit; 40. Temperature sensor; 610. Acquisition module; 620. Determination module; 630. Adjustment module; 710. Processor; 720. Communication interface; 730. Memory; 740. Communication bus. DETAILED DESCRIPTION

[0042] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the drawings of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0043] The ideal state inside the air conditioner evaporator is an endothermic isobaric vaporization process. For a one-to-many refrigeration system, one air conditioner outdoor unit needs to be connected to multiple air conditioner indoor units, each of which is a certain distance away from the air conditioner outdoor unit. It is inevitable that there will be path loss, especially for air conditioner indoor units that are far away. The remote pressure loss may be more serious. At present, the operation of the air conditioning system is controlled by the pressure sensor and temperature sensor installed on the side of the air conditioner outdoor unit. The disadvantages are as follows:

[0044] 1) Unable to detect the pressure and temperature values ​​at the far end of the refrigerant pipeline of the air conditioning system;

[0045] 2) It is impossible to understand the status parameters of the far end of the refrigerant pipeline of the air conditioning system;

[0046] 3) The refrigeration effect at the far end of the refrigerant pipeline of the air conditioning system cannot be fully met;

[0047] The flow rate of refrigerant is particularly important for the cooling effect of the air conditioning system. Since the flow rate is the main part of the pressure loss of the refrigerant pipeline, the extension of the refrigerant pipeline and the drop of the refrigerant pipeline will cause the loss of refrigerant pipeline pressure. The current control scheme cannot dynamically manage the refrigerant flow rate.

[0048] In addition, although a series of standard tests are carried out before the air conditioning system leaves the factory, compensation measures for refrigerant pipeline pressure loss can be added to the control scheme based on the experimental conclusions, the effect of such compensation measures is not obvious.

[0049] To solve the above problems, an embodiment of the present invention provides a control method for an air conditioning system, such as Figure 1 The air conditioning system includes a refrigerant pipeline 10, an air conditioning outdoor unit 20 and a plurality of air conditioning indoor units 30, and the air conditioning outdoor unit 20 is connected to the plurality of air conditioning indoor units 30 through the refrigerant pipeline 10. That is, the air conditioning system provided in this embodiment provides refrigerant to the plurality of air conditioning indoor units 30 through a single air conditioning outdoor unit 20.

[0050] like Figure 2 As shown, the control method of the air conditioning system includes the following steps:

[0051] Step S110: obtaining the refrigerant temperature of multiple air-conditioning indoor units before heat exchange.

[0052] During the operation of the air-conditioning system, the refrigerant temperature before heat exchange in multiple air-conditioning indoor units can be obtained through the temperature sensor, that is, the temperature before the refrigerant enters the air-conditioning indoor units.

[0053] Among them, each refrigerant pipeline is equipped with a temperature sensor corresponding to each air conditioner indoor unit.

[0054] Step S120: Based on the refrigerant temperatures of the air conditioner indoor units, the highest temperature is determined.

[0055] After obtaining the refrigerant temperature of each air conditioner indoor unit before heat exchange, the refrigerant temperatures are compared to determine the highest temperature.

[0056] For example, when there are three air conditioner units, it is assumed that the refrigerant temperature of the first air conditioner unit before heat exchange is T1, the refrigerant temperature of the second air conditioner unit before heat exchange is T2, and the refrigerant temperature of the third air conditioner unit before heat exchange is T3. When T1<T2<T3, the highest temperature is T3.

[0057] Step S130: adjusting the air conditioning system based on the preset temperature range in which the maximum temperature is located.

[0058] After the highest temperature is determined, a plurality of preset temperature intervals are provided, each of which corresponds to a set of adjustment parameters of the air conditioning system. The air conditioning system is adjusted based on the preset temperature interval in which the highest temperature is located.

[0059] For an idealized refrigeration process, the evaporator (the indoor unit of the air conditioner during refrigeration) undergoes an isobaric process before and after, but due to the flow resistance in the refrigerant pipeline, the refrigerant will have pressure loss in the path. The higher the temperature, the greater the pressure loss. In order to compensate for this part of the pressure loss, it is necessary to select the indoor unit of the air conditioner that causes the greatest pressure loss, that is, the indoor unit of the air conditioner with the highest temperature. Then, based on this indoor unit of the air conditioner, the control target of the air conditioning refrigeration system is corrected, so that the indoor unit with a longer refrigerant pipeline can achieve a better cooling effect. At the same time, the cooling effect of other indoor units of the air conditioner will also be improved.

[0060] The control method of the air conditioning system provided by the embodiment of the present invention obtains the refrigerant temperature of multiple air conditioning indoor units before heat exchange, determines the highest temperature among them based on the refrigerant temperature of each air conditioning indoor unit, and adjusts the air conditioning system based on the preset temperature range where the highest temperature is located. Through this control method, among the air conditioning indoor units in operation, the indoor unit with the largest pressure drop at the far end of the refrigerant pipeline can be locked, and the control target of the air conditioning refrigeration system can be corrected based on this air conditioning indoor unit, so that the air conditioning indoor unit with a longer refrigerant pipeline can achieve a better cooling effect.

[0061] Based on the above embodiments, in one example, step S130: the step of adjusting the air-conditioning system based on the preset temperature range in which the maximum temperature is located, includes: adjusting the expansion valve opening of the air-conditioning outdoor unit, and / or the compressor frequency, and / or the flow rate of the refrigerant pipeline based on the preset temperature range in which the maximum temperature is located.

[0062] Specifically, after the maximum temperature is determined, the expansion valve opening of the air-conditioning outdoor unit, the compressor frequency, or the flow rate of the refrigerant pipeline can be adjusted individually according to the preset temperature range of the maximum temperature value, and multiple parameters such as the expansion valve opening, compressor frequency, and flow rate of the refrigerant pipeline can be adjusted at the same time.

[0063] Generally, the expansion valve opening, compressor frequency and flow rate of the refrigerant pipeline of the air conditioner outdoor unit are positively correlated with the temperature value in the preset temperature range. The higher the maximum temperature, the higher the temperature value of the corresponding preset temperature range, and thus the corresponding expansion valve opening, compressor frequency and flow rate of the refrigerant pipeline are also greater.

[0064] In one embodiment, the multiple preset temperature intervals are respectively a first preset temperature interval, a second preset temperature interval, a third preset temperature interval, a fourth preset temperature interval and a fifth preset temperature interval which gradually increase along the temperature gradient; the first preset temperature interval, the second preset temperature interval, the third preset temperature interval, the fourth preset temperature interval and the fifth preset temperature interval are all provided with corresponding adjustment parameters for adjusting the expansion valve opening of the air-conditioning outdoor unit, and / or the compressor frequency, and / or the flow rate of the refrigerant pipeline.

[0065] During the adjustment process, the corresponding adjustment parameters can be selected according to the preset temperature interval corresponding to the maximum temperature, thereby achieving the adjustment of the air-conditioning system. When the maximum temperature is in the first preset interval, the air-conditioning system adjusts the air-conditioning system based on the adjustment parameters corresponding to the first preset interval. When the maximum temperature is in the second preset interval, the air-conditioning system adjusts the air-conditioning system based on the adjustment parameters corresponding to the second preset interval. When the maximum temperature is in the third preset interval, the air-conditioning system adjusts the air-conditioning system based on the adjustment parameters corresponding to the third preset interval. When the maximum temperature is in the fourth preset interval, the air-conditioning system adjusts the air-conditioning system based on the adjustment parameters corresponding to the fourth preset interval. When the maximum temperature is in the fifth preset interval, the air-conditioning system adjusts the air-conditioning system based on the adjustment parameters corresponding to the fifth preset interval.

[0066] Based on the above embodiments, in one embodiment, Figure 1 As shown, the refrigerant pipeline 10 includes a main pipeline 110 and a plurality of branch pipelines 120; the air conditioner outdoor unit 20 is connected to the air conditioner indoor unit 30 through the main pipeline 110 and each branch pipeline 120;

[0067] The flow rate adjustment step of the refrigerant pipeline includes: adjusting the flow rate of the main pipeline based on the preset temperature range of the maximum temperature; and / or adjusting the flow rate of the branch pipeline based on the preset temperature range of the maximum temperature.

[0068] That is, in this embodiment, valves are provided on both the main pipe 110 and the branch pipe 120. The overall flow rate can be adjusted through the valve on the main pipe according to the preset temperature range of the highest temperature, or the flow rate of each air-conditioning indoor unit 30 can be adjusted through each valve on the branch pipe according to the preset temperature range of the highest temperature.

[0069] In order to facilitate user adjustment, such as Figure 3 As shown, before the step of obtaining the refrigerant temperature of multiple air conditioner indoor units before heat exchange, it includes:

[0070] Step S1110: Determine whether each indoor unit of the air conditioner is in operation.

[0071] Step S1120: Obtain the refrigerant temperature of the indoor unit of the air conditioner in operation before heat exchange.

[0072] In order to facilitate real-time monitoring of the operation and cleaning of the air-conditioning indoor unit, the air-conditioning indoor unit, the air-conditioning outdoor unit and the control system are connected in communication before regulation. Determine whether each air-conditioning indoor unit is in operation. To avoid interference, remove the parameters corresponding to the air-conditioning indoor units that are not in operation, and only obtain the refrigerant temperature before heat exchange of the air-conditioning indoor units that are in operation. After obtaining the refrigerant temperature before heat exchange of each running air-conditioning indoor unit, compare the refrigerant temperatures to determine the highest temperature. After determining the highest temperature, there are multiple preset temperature intervals, and each preset temperature interval corresponds to a set of adjustment parameters for the air-conditioning system. Adjust the air-conditioning system based on the preset temperature interval where the highest temperature is located.

[0073] It is understandable that, for ease of measurement, e.g. Figure 1 As shown, each refrigerant pipeline 10 is provided with a temperature sensor 40 corresponding to each air conditioner indoor unit. That is, the temperature sensor 40 is arranged on the branch pipe 120, which is located on the pipeline before the refrigerant enters the air conditioner indoor unit 30.

[0074] In a specific embodiment, Figure 4 As shown in the figure, after the air conditioning system is powered on, the control system establishes communication with all air conditioner indoor units, detects the capillary sensor Tc2 of all air conditioner indoor units that are turned on and running, compares the values ​​of the Tc2 sensors of all air conditioner indoor units that are turned on and running, and takes the largest Tc2. If the air conditioner indoor unit is not turned on or stops running, the comparison of Tc2 of this air conditioner indoor unit is abandoned. The larger the Tc2, the more serious the pressure loss, and it is necessary to adjust the refrigerant flow rate by correcting the control target to compensate for this part of the pressure loss.

[0075] like Figure 5 As shown, after the air conditioner outdoor unit receives the Max[Tc2] value of the air conditioner indoor unit through communication, the air conditioning system is controlled according to Max[Tc2]. The specific control method is as follows:

[0076] 1) When the maximum value of the capillary sensor of the indoor unit that is turned on and running is Max[Tc2]<T1: the control target of the air conditioning system is a1;

[0077] 2) When T1≤Max[Tc2]<T2: the control target a2 of the air conditioning system;

[0078] 3) When T2≤Max[Tc2]<T3: the control target of the air conditioning system is +3;

[0079] 4) When T3≤Max[Tc2]<T4: the control target of the air conditioning system is a4;

[0080] 5) When the remote pressure sensor pressure value Max[Tc2]≥T4: the control target of the air conditioning system +a5;

[0081] Among them, the above-mentioned T1, T2, T3, and T4 are all pre-set temperature values; a1, a2, a3, a4, and a5 are all pre-set correction values; the control targets of the air-conditioning system include but are not limited to the expansion valve, compressor frequency, etc.; for different control targets of the air-conditioning system, T1, T2, T3, and T4 can be set to different temperature values ​​and temperature ranges, and a1, a2, a3, a4, and a5 can be set to different correction values ​​and correction ranges.

[0082] In addition, by improving the accuracy of the Tc2 sensor, a more accurate Tc2 value can be obtained, making the control more precise.

[0083] The control system of the air-conditioning system provided by the embodiment of the present invention is described below. The control system of the air-conditioning system described below and the control method described above can be referred to each other.

[0084] like Figure 6 As shown, the control system of the air-conditioning system includes: an acquisition module 610 , a determination module 620 , and an adjustment module 630 .

[0085] Among them, the acquisition module 610 is used to obtain the refrigerant temperature of multiple air-conditioning indoor units before heat exchange; the determination module 620 is used to determine the highest temperature among them based on the refrigerant temperature of each of the air-conditioning indoor units; the adjustment module 630 is used to adjust the air-conditioning system based on the preset temperature range where the highest temperature is located; wherein, there are multiple preset temperature ranges, and each preset temperature range corresponds to a set of adjustment parameters of the air-conditioning system.

[0086] Figure 7 An example of a physical structure diagram of an electronic device is shown in FIG. Figure 7 As shown, the electronic device may include: a processor 710, a communication interface 720, a memory 730 and a communication bus 740, wherein the processor 710, the communication interface 720 and the memory 730 communicate with each other through the communication bus 740. The processor 710 may call the logic instructions in the memory 730 to execute the control method including: obtaining the refrigerant temperature of the multiple air-conditioning indoor units before heat exchange; determining the highest temperature based on the refrigerant temperature of each of the air-conditioning indoor units; adjusting the air-conditioning system based on the preset temperature range where the highest temperature is located; wherein the preset temperature range is provided with multiple, and each of the preset temperature ranges corresponds to a set of adjustment parameters of the air-conditioning system.

[0087] It should be noted that the electronic device in this embodiment can be a server, a PC, or other devices in specific implementation, as long as its structure includes the following: Figure 7The processor 710, communication interface 720, memory 730 and communication bus 740 shown in the figure, wherein the processor 710, communication interface 720, memory 730 communicate with each other through the communication bus 740, and the processor 710 can call the logic instructions in the memory 730 to execute the above method. This embodiment does not limit the specific implementation form of the electronic device.

[0088] In addition, the logic instructions in the above-mentioned memory 730 can be implemented in the form of a software functional unit and can be stored in a computer-readable storage medium when it is sold or used as an independent product. Based on such an understanding, the technical solution of the present invention, in essence, or the part that contributes to the prior art or the part of the technical solution, can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including a number of instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the method described in each embodiment of the present invention. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), disk or optical disk and other media that can store program codes.

[0089] Furthermore, an embodiment of the present invention discloses a computer program product, which includes a computer program stored on a non-transitory computer-readable storage medium, and the computer program includes program instructions. When the program instructions are executed by a computer, the computer can execute the control methods provided by the above-mentioned method embodiments, and the control method includes: obtaining the refrigerant temperatures of multiple air-conditioning indoor units before heat exchange; based on the refrigerant temperatures of each of the air-conditioning indoor units, determining the highest temperature therein; based on a preset temperature range in which the highest temperature is located, adjusting the air-conditioning system; wherein, there are multiple preset temperature ranges, and each preset temperature range corresponds to a set of adjustment parameters of the air-conditioning system.

[0090] On the other hand, an embodiment of the present invention further provides a non-transitory computer-readable storage medium having a computer program stored thereon, and when the computer program is executed by a processor, it is implemented to execute the control method provided by the above-mentioned embodiments, and the control method includes: obtaining the refrigerant temperatures of multiple air-conditioning indoor units before heat exchange; based on the refrigerant temperatures of each of the air-conditioning indoor units, determining the highest temperature therein; based on the preset temperature range in which the highest temperature is located, adjusting the air-conditioning system; wherein, there are multiple preset temperature ranges, and each preset temperature range corresponds to a set of adjustment parameters of the air-conditioning system.

[0091] The device embodiments described above are merely illustrative, wherein the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the scheme of this embodiment. Ordinary technicians in this field can understand and implement it without paying creative labor.

[0092] Through the description of the above implementation methods, those skilled in the art can clearly understand that each implementation method can be implemented by means of software plus a necessary general hardware platform, and of course, it can also be implemented by hardware. Based on this understanding, the above technical solution is essentially or the part that contributes to the prior art can be embodied in the form of a software product, and the computer software product can be stored in a computer-readable storage medium, such as ROM / RAM, a disk, an optical disk, etc., including a number of instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to execute the methods described in each embodiment or some parts of the embodiments.

[0093] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A control method for an air conditioning system, characterized in that: The air conditioning system comprises a refrigerant pipeline, an air conditioning outdoor unit and a plurality of air conditioning indoor units, the air conditioning outdoor unit is connected to the plurality of air conditioning indoor units through the refrigerant pipeline, and the control method of the air conditioning system comprises: Obtaining the refrigerant temperature of the plurality of air conditioner indoor units before heat exchange; Based on the refrigerant temperatures of the air conditioner indoor units, determining the highest temperature therein; adjusting the air conditioning system based on the preset temperature range in which the maximum temperature is located; There are a plurality of preset temperature intervals, and each preset temperature interval corresponds to a set of adjustment parameters of the air-conditioning system.

2. The control method of the air conditioning system according to claim 1, characterized in that: The step of adjusting the air conditioning system based on the preset temperature range in which the maximum temperature is located comprises: Based on the preset temperature range in which the maximum temperature is located, the opening of the expansion valve of the air conditioner outdoor unit, and / or the compressor frequency, and / or the flow rate of the refrigerant pipeline are adjusted.

3. The control method of the air conditioning system according to claim 2, characterized in that: The opening degree of the expansion valve of the air conditioner outdoor unit, the compressor frequency, and the flow rate of the refrigerant pipeline are positively correlated with the temperature value in the preset temperature range.

4. The control method of the air conditioning system according to claim 2, characterized in that: The refrigerant pipeline includes a main pipeline and a plurality of branch pipelines; the air conditioner outdoor unit is connected to the air conditioner indoor unit through the main pipeline and each branch pipeline; The step of adjusting the flow rate of the refrigerant pipeline includes: Adjusting the flow rate of the main pipeline based on the preset temperature range in which the maximum temperature is located; And / or, based on the preset temperature range in which the maximum temperature is located, adjusting the flow rate of the branch pipeline.

5. The control method of the air conditioning system according to claim 2, characterized in that: The plurality of preset temperature intervals are respectively a first preset temperature interval, a second preset temperature interval, a third preset temperature interval, a fourth preset temperature interval and a fifth preset temperature interval which gradually increase along the temperature gradient; The first preset temperature interval, the second preset temperature interval, the third preset temperature interval, the fourth preset temperature interval and the fifth preset temperature interval are all provided with corresponding adjustment parameters for adjusting the expansion valve opening of the air conditioner outdoor unit, and / or the compressor frequency, and / or the flow rate of the refrigerant pipeline.

6. The control method of the air conditioning system according to any one of claims 1 to 5, characterized in that: The step of obtaining the refrigerant temperature of the plurality of air conditioner indoor units before heat exchange comprises: Determining whether each of the air conditioner indoor units is in an operating state; The refrigerant temperature of the air conditioner indoor unit in operation before heat exchange is obtained.

7. The control method of the air conditioning system according to any one of claims 1 to 5, characterized in that: Each of the refrigerant pipelines is provided with a temperature sensor corresponding to each of the air conditioner indoor units.

8. A control system for an air conditioning system, characterized in that: include: An acquisition module is used to obtain the refrigerant temperature of multiple air conditioner indoor units before heat exchange; A determination module, configured to determine a maximum temperature based on the refrigerant temperature of each of the air conditioner indoor units; an adjustment module, configured to adjust the air conditioning system based on a preset temperature range in which the maximum temperature is located; There are a plurality of preset temperature intervals, and each preset temperature interval corresponds to a set of adjustment parameters of the air-conditioning system.

9. An electronic device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that: When the processor executes the program, the control method of the air-conditioning system according to any one of claims 1 to 7 is implemented.

10. A non-transitory computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the control method of the air conditioning system as claimed in any one of claims 1 to 7 is implemented.

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