Air conditioning system control method, device and air conditioning system

Abstract

This application discloses an air conditioning system control method, device, and air conditioning system. The method includes: in cooling mode, outputting a valve body closing command through a compressor control interface; sequentially selecting a first target control interface from multiple evaporator control interfaces; outputting a valve body opening command through the first target control interface, and outputting valve body closing commands through other evaporator control interfaces besides the first target control interface; after a first preset time, recording a first pipeline pressure or a first pipeline temperature in the evaporator corresponding to the first target control interface; if the first pipeline pressure is lower than a first pressure threshold, or the first pipeline temperature is higher than a first temperature threshold, then determining that the compressor valve body is connected to the first target control interface. The technical solution of this application can accurately and conveniently identify incorrect connections between valve bodies and their control interfaces in an air conditioning system, improving the troubleshooting efficiency of air conditioning systems.

Description

Technical Field

[0001] This application belongs to the field of air conditioning system control technology, and in particular relates to an air conditioning system control method, device and air conditioning system. Background Technology

[0002] In an air conditioning system consisting of one outdoor unit and several indoor units, there are typically multiple valves used to control refrigerant flow. For example, there are valves controlling the flow of refrigerant to each evaporator, and valves controlling the flow to the compressor. The opening of these valves is generally controlled by corresponding control interfaces. However, in some cases, incorrect connections may occur between the valves and the control interfaces due to manufacturing defects or human error during maintenance, leading to malfunctions in the air conditioning system. Summary of the Invention

[0003] The embodiments of this application provide an air conditioning system control method, device, and air conditioning system, which can accurately and conveniently detect erroneous connections between valve bodies and their control interfaces in the air conditioning system, thereby improving the troubleshooting efficiency of the air conditioning system.

[0004] Other features and advantages of this application will become apparent from the following detailed description, or may be learned in part by practice of this application.

[0005] According to a first aspect of the embodiments of this application, an air conditioning system control method is provided. The air conditioning system includes a compressor valve body, a plurality of evaporator valve bodies, and evaporators corresponding one-to-one with each of the evaporator valve bodies. The compressor valve body is used to control the refrigerant flow to the compressor, and the evaporator valve body is used to control the refrigerant flow to the evaporator. The opening degree of both the compressor valve body and the evaporator valve body is controlled through corresponding control interfaces. The method includes: in cooling mode, outputting a valve body closing command through the compressor control interface to close the valve body controlled by the compressor control interface; sequentially selecting one control interface from the plurality of evaporator control interfaces as the first... A target control interface; for each first target control interface, a valve opening command is output through the first target control interface to open the valve controlled by the first target control interface, and a valve closing command is output through other evaporator control interfaces other than the first target control interface to close the valve controlled by the other evaporator control interfaces. After a first preset time, the first pipeline pressure or the first pipeline temperature in the evaporator corresponding to the first target control interface is recorded; if the first pipeline pressure is lower than a first pressure threshold or the first pipeline temperature is higher than a first temperature threshold, it is determined that the compressor valve is connected to the first target control interface.

[0006] In some embodiments of this application, based on the aforementioned scheme, the first pressure threshold is -0.05 MPa to 0.6 MPa.

[0007] In some embodiments of this application, based on the foregoing scheme, after determining that the compressor valve body is connected to the first target control interface, the method further includes: encoding the first target control interface connected to the compressor valve body as the compressor control interface.

[0008] In some embodiments of this application, based on the foregoing scheme, after determining that the compressor valve body is connected to the first target control interface, the method further includes: encoding the compressor control interface connected to the corresponding evaporator valve body as the first target evaporator control interface.

[0009] In some embodiments of this application, based on the foregoing scheme, the method further includes: in heating mode, outputting a valve body closing command through the compressor control interface to close the valve body controlled by the compressor control interface; sequentially selecting one control interface from a plurality of evaporator control interfaces as a second target control interface; for each second target control interface, outputting a valve body opening command through the second target control interface to open the valve body controlled by the second target control interface, and outputting a valve body closing command through other evaporator control interfaces other than the second target control interface to close the valve bodies controlled by the other evaporator control interfaces; after a second preset time, recording the second pipeline pressure or the second pipeline temperature in the condenser of the air conditioning system; if the second pipeline pressure is lower than a second pressure threshold or the second pipeline temperature is higher than a second temperature threshold, then determining that the compressor valve body is connected to the first target control interface.

[0010] In some embodiments of this application, based on the foregoing scheme, after determining that the compressor valve body is connected to the second target control interface, the method further includes: encoding the second target control interface connected to the compressor valve body as the compressor control interface.

[0011] In some embodiments of this application, based on the foregoing scheme, after determining that the compressor valve body is connected to the second target control interface, the method further includes: encoding the compressor control interface connected to the corresponding evaporator valve body as the second target control interface.

[0012] In some embodiments of this application, based on the foregoing scheme, after the compressor valve body is connected to the compressor control interface, the method further includes: in cooling mode, outputting a valve body closing command through the compressor control interface to close the compressor valve body controlled by the compressor control interface; sequentially selecting one control interface from a plurality of evaporator control interfaces as a third target control interface, wherein evaporator control interfaces other than the third target control interface are designated as other evaporator control interfaces, the evaporator corresponding to the third target control interface is designated as the third target evaporator, and the evaporators other than the third target evaporator are designated as other evaporator control interfaces. It is an evaporator; for each third target control interface, it outputs a valve opening command through the third target control interface to open the valve controlled by the third target control interface, and outputs a valve closing command through the other evaporator control interfaces to close the valve controlled by the other evaporator control interfaces. After a third preset time, it records the third pipeline pressure or third pipeline temperature in each evaporator; if the third pipeline pressure of the other evaporator is higher than the third pressure threshold, or the third pipeline temperature is lower than the third temperature threshold, it is determined that the evaporator valve corresponding to the other evaporator is connected to the third target control interface.

[0013] In some embodiments of this application, based on the foregoing scheme, before sequentially selecting one control interface from multiple evaporator control interfaces as the third target control interface, the method further includes: obtaining the initial pipeline pressure or initial pipeline temperature in each evaporator; calculating the third pressure threshold of each evaporator based on the initial pipeline pressure in each evaporator using a pressure threshold adjustment value; or, calculating the third temperature threshold of each evaporator based on the initial pipeline temperature in each evaporator using a temperature threshold adjustment value.

[0014] In some embodiments of this application, based on the foregoing scheme, the temperature threshold adjustment value is 2℃~10℃.

[0015] In some embodiments of this application, based on the foregoing scheme, the third preset time is 3 min to 30 min.

[0016] In some embodiments of this application, based on the foregoing scheme, after determining that the evaporator valve body corresponding to other evaporators is connected to the third target control interface, the method further includes: encoding the third target control interface connected to the evaporator valve body corresponding to the other evaporator as the other evaporator control interface.

[0017] In some embodiments of this application, based on the foregoing scheme, after determining that the evaporator valve body corresponding to other evaporators is connected to the third target control interface, the method further includes: encoding the other evaporator control interface connected to the evaporator valve body corresponding to the third target evaporator as the third target control interface.

[0018] In this application, a valve body closing command is output by triggering the compressor control interface, and a first target control interface is selected from multiple evaporator control interfaces to trigger a valve body opening command. The valve body closing command is triggered by other evaporator controls. Finally, the first pipeline pressure or first pipeline temperature in the evaporator corresponding to the first target control interface is recorded, and the recorded value is compared with a preset value. This allows for a quick and effective determination of whether the control interface connected to the compressor valve body is incorrect, eliminating the need for manual judgment and greatly improving the interface error correction efficiency in the air conditioning system.

[0019] According to a second aspect of the present application, an air conditioning system control device is provided. The device includes one or more processors and one or more memories. The one or more memories store at least one piece of program code, which is loaded and executed by the one or more processors to implement the method described in the first aspect of the present application.

[0020] According to a third aspect of the present application, an air conditioning system is provided, the air conditioning system including a compressor valve body, a plurality of evaporator valve bodies, and evaporators corresponding one-to-one with the evaporator valve bodies. The compressor valve body is used to control the refrigerant flow to the compressor, and the evaporator valve body is used to control the refrigerant flow to the evaporator. The opening degree of the compressor valve body and the opening degree of the evaporator valve body are both controlled through corresponding control interfaces. The air conditioning system also includes an air conditioning system control device as described in the second aspect of the present application.

[0021] The beneficial effects of the embodiments of the second to third aspects described above can be referred to the beneficial effects of the first aspect and the embodiments of the first aspect described above, and will not be repeated here.

[0022] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and do not limit this application. Attached Figure Description

[0023] 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. It is obvious that the drawings described below are merely some embodiments of this application, and those skilled in the art can obtain other drawings based on these drawings without any inventive effort. In the drawings:

[0024] Figure 1 An air conditioning system architecture diagram is shown, in which the technical solutions of the embodiments of this application can be applied.

[0025] Figure 2 A piping diagram of refrigerant flow in an air conditioning system according to an embodiment of this application is shown;

[0026] Figure 3 A flowchart of an air conditioning system control method according to an embodiment of this application is shown;

[0027] Figure 4 Another flowchart of the air conditioning system control method in an embodiment of this application is shown;

[0028] Figure 5 Another flowchart of the air conditioning system control method in an embodiment of this application is shown;

[0029] Figure 6 This document shows a flowchart illustrating a method prior to sequentially selecting one control interface from a plurality of evaporator control interfaces as the third target control interface, as described in an embodiment of this application.

[0030] Figure 7 A schematic diagram of the structure of the air conditioning system control device in an embodiment of this application is shown. Detailed Implementation

[0031] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0032] Furthermore, the described features, structures, or characteristics can be combined in any suitable manner in one or more embodiments. Numerous specific details are provided in the following description to give a thorough understanding of embodiments of this application. However, those skilled in the art will recognize that the technical solutions of this application can be practiced without one or more of the specific details, or other methods, components, apparatuses, steps, etc., can be employed. In other instances, well-known methods, apparatuses, implementations, or operations are not shown or described in detail to avoid obscuring various aspects of this application.

[0033] The block diagrams shown in the accompanying drawings are merely functional entities and do not necessarily correspond to physically independent entities. That is, these functional entities can be implemented in software, in one or more hardware modules or integrated circuits, or in different network and / or processor devices and / or microcontroller devices.

[0034] The flowcharts shown in the accompanying drawings are merely illustrative and do not necessarily include all content and operations / steps, nor do they necessarily have to be performed in the described order. For example, some operations / steps can be broken down, while others can be combined or partially combined; therefore, the actual execution order may change depending on the specific circumstances.

[0035] The technical solution proposed in this application can be applied to multi-split air conditioning systems. To help those skilled in the art better understand this application, the following will combine... Figure 1 and Figure 2 A brief explanation of a multi-split air conditioning system.

[0036] See Figure 1 The diagram illustrates an air conditioning system architecture to which the technical solutions of the embodiments of this application can be applied.

[0037] A multi-split air conditioning system is a refrigerant circulation system consisting of one outdoor unit and several indoor units. For example... Figure 1 As shown, the outdoor unit 101 includes a compressor and a condenser, and the indoor unit 102 includes an evaporator. Each indoor unit has an evaporator valve body (i.e., a branch valve) in the pipe where the evaporator is located. The branch valve is used to control the flow of refrigerant to the corresponding evaporator. For example, in cooling mode, when the branch valves corresponding to indoor units A and B are opened and the branch valve corresponding to indoor unit C is closed, the refrigerant flowing out of the outdoor unit 101 only flows to the evaporators in indoor units A and B. At this time, only indoor units A and B output cold air.

[0038] Further, see Figure 2 The diagram shows the piping diagram of refrigerant flow in the air conditioning system according to an embodiment of this application.

[0039] The air conditioning system described in this application may include multiple evaporators and a compressor. The multiple evaporators and the compressor can be connected together via connecting pipes (such as copper pipes) to allow refrigerant to flow between the compressor and the evaporators. Figure 2 The air conditioning system shown includes three evaporators 201 and one compressor 208.

[0040] The air conditioning system described in this application may further include multiple evaporator valve bodies 202 (i.e., branch valves) and a compressor valve body 203 (i.e., jet valve), wherein the opening degree of each valve body is controlled by a corresponding control interface mounted on the control panel. It should be noted that the valve body may be an electronic expansion valve body. Physically, the control interface is connected to its corresponding electronic expansion valve body via an electronic expansion valve coil. In practice, the control interface transmits commands to the valve body, and the valve body opens to the corresponding degree according to the commands. Figure 2 As shown, the evaporator valves corresponding to evaporators A, B, and C are controlled by their respective control interfaces 204, namely interfaces a, b, and c, respectively, while the compressor valve is controlled by interface p.

[0041] However, in some cases, incorrect connection may occur between the valve body and the control interface due to manufacturing issues or human error during maintenance. For example, Figure 2 As shown, the P interface is connected to the evaporator valve body through the electronic expansion valve coil, and the A interface is connected to the compressor valve body through the electronic expansion valve coil. It is understandable that when the electronic expansion valve and the valve body in the indoor / outdoor unit do not correspond, it will cause the air conditioning system to malfunction.

[0042] The air conditioning system described in this application may also include a condenser 206, the function of which is (in cooling mode) to condense the high-temperature gaseous refrigerant from the compressor into a medium-temperature liquid refrigerant.

[0043] In addition, the air conditioning system described in this application may also include a plate heat exchanger 205 and a four-way valve 207.

[0044] The following will continue based on Figure 2 The working principle of the air conditioning system described in this application in cooling mode and heating mode is briefly explained as follows:

[0045] In cooling mode, the compressor compresses the low-temperature, low-pressure gaseous refrigerant to obtain a high-temperature, high-pressure gaseous refrigerant. Then, the high-temperature, high-pressure gaseous refrigerant flows into the condenser through a four-way valve to obtain a medium-temperature, high-pressure liquid refrigerant. After passing through the first channel in the plate heat exchanger, the medium-temperature, high-pressure liquid refrigerant becomes a low-temperature, high-pressure liquid refrigerant.

[0046] In the plate heat exchanger, some of the refrigerant is diverted to the compressor valve body (i.e., the jet valve) and then flows into the second channel of the plate heat exchanger. The refrigerant flowing into the second channel is further cooled and exchanges heat with the refrigerant flowing through the first channel of the plate heat exchanger. This allows the medium-temperature, high-pressure liquid refrigerant to form a low-temperature, high-pressure liquid refrigerant after passing through the first channel of the plate heat exchanger.

[0047] In addition, the refrigerant flowing through the second channel of the plate heat exchanger flows into the compressor.

[0048] Furthermore, the low-temperature, high-pressure liquid refrigerant passes through the open evaporator valve body, and after obtaining the low-temperature, low-pressure liquid refrigerant, it flows into the evaporator. The low-temperature, low-pressure liquid refrigerant in the evaporator absorbs heat from the air and evaporates into low-temperature, low-pressure gaseous refrigerant. The air absorbs heat and its temperature drops, thus achieving a cooling effect.

[0049] Finally, the low-temperature, low-pressure gaseous refrigerant flowing out of the evaporator returns to the compressor, completing one cycle of the refrigerant in the air conditioning system.

[0050] In heating mode, the only difference from cooling mode is the switching of the four-way valve flow direction. The high-temperature gaseous refrigerant from the compressor is first discharged to the evaporator, then passes through the compressor valve body (i.e., the jet valve), the plate heat exchanger, and the condenser before flowing back to the compressor. The entire cycle is the opposite of cooling mode, so we will not go into details here.

[0051] The implementation details of the technical solutions in the embodiments of this application are described in detail below:

[0052] Figure 3 A flowchart of an air conditioning system control method according to an embodiment of this application is shown. The air conditioning system may include a compressor valve body, multiple evaporator valve bodies, and evaporators corresponding to each evaporator valve body. The compressor valve body controls the refrigerant flow to the compressor, and the evaporator valve body controls the refrigerant flow to the evaporator. The opening degree of both the compressor valve body and the evaporator valve body is controlled through corresponding control interfaces. The air conditioning system control method can be executed by a device with computing processing capabilities, such as an air conditioning system control device. (Refer to...) Figure 3 As shown, the air conditioning system control method includes at least steps 310 to 370, which are described in detail below:

[0053] Step 310: In cooling mode, output a valve body closing command through the compressor control interface to close the valve body controlled by the compressor control interface.

[0054] Step 330: Select one control interface from multiple evaporator control interfaces as the first target control interface.

[0055] Step 350: For each first target control interface, output a valve opening command through the first target control interface to open the valve controlled by the first target control interface, and output a valve closing command through other evaporator control interfaces other than the first target control interface to close the valve controlled by the other evaporator control interfaces. After a first preset time, record the first pipeline pressure or the first pipeline temperature in the evaporator corresponding to the first target control interface.

[0056] Step 370: If the pressure in the first pipeline is lower than the first pressure threshold, or the temperature in the first pipeline is higher than the first temperature threshold, then it is determined that the compressor valve body is connected to the first target control interface.

[0057] To enable those skilled in the art to better understand this application, the following will be combined with... Figure 2 The following is an illustration using a specific example.

[0058] Specifically, refer to Figure 2 After the cooling mode is turned on, the compressor control interface (i.e., the P interface) outputs a valve body closing command, causing the valve body it controls to enter the closed state, that is, the opening degree of the valve body it controls is 0.

[0059] Subsequently, one of the multiple evaporator control interfaces (i.e., interface a, interface b, and interface c) is selected as the first target control interface.

[0060] Then, a valve opening command is output through the first target control interface, causing the valve it controls to enter the open state, meaning the opening degree of the valve it controls is not 0. A valve closing command is output through other evaporator control interfaces, causing the valve it controls to enter the closed state, meaning the opening degree of the valve it controls is 0. By closing the valves controlled by the P interface and other evaporator control interfaces, and only opening the valve controlled by the first target control interface, it acts as a control variable. After the compressor has run for a predetermined time, the pressure or temperature of the first pipeline in the evaporator corresponding to the first target control interface is recorded. This can be used as a criterion for determining whether the first target control interface and the compressor valve are correctly connected.

[0061] If the pressure in the first pipeline is lower than the first pressure threshold or the temperature in the first pipeline is higher than the first temperature threshold, then the compressor valve body is determined to be connected to the first target control interface. That is, if the pressure in the first pipeline is greater than or equal to the first pressure threshold or the temperature in the first pipeline is less than or equal to the first temperature threshold, then the compressor valve body is determined to be correctly connected to the compressor control interface.

[0062] For example, such as Figure 2As shown, if interface a is selected as the first target control interface, a valve opening command is output through interface a to open the valve controlled by interface a, and a valve closing command is output through interfaces b and c to close the valves controlled by interfaces b and c. After the compressor has been running for a predetermined time, the pipeline pressure value Pa or pipeline temperature value Ta in the evaporator (i.e., evaporator A) corresponding to interface a is recorded. If the pipeline pressure Pa is lower than the first pressure threshold PL (for example, PL can be -0.05 MPa to 0.6 MPa), or the pipeline temperature Ta is higher than the first temperature threshold TL, it is determined that the jet valve (i.e., the compressor valve body) is connected to interface a.

[0063] For example, such as Figure 2 As shown, if interface b is selected as the first target control interface, a valve opening command is output through interface b to open the valve controlled by interface b, and a valve closing command is output through interfaces a and c to close the valves controlled by interfaces a and c. After the compressor has been running for a predetermined time, the pipeline pressure value Pb or pipeline temperature value Tb in the evaporator (i.e., evaporator B) corresponding to interface b is recorded. If the pipeline pressure Pb is lower than the first pressure threshold PL (for example, PL can be -0.05 MPa to 0.6 MPa), or the pipeline temperature Tb is higher than the first temperature threshold TL, it is determined that the jet valve (i.e., the compressor valve body) is connected to interface b.

[0064] For example, such as Figure 2 As shown, if interface C is selected as the first target control interface, a valve opening command is output through interface C to open the valve controlled by interface C. Valve closing commands are output through interfaces A and B to close the valves controlled by interfaces A and B, respectively. After a predetermined compressor running time, the pipe pressure value Pc or pipe temperature value Tc in the evaporator (i.e., evaporator C) corresponding to interface C is recorded. If the pipe pressure Pc is lower than the first pressure threshold PL (PL can be -0.05Mpc to 0.6Mpc), or the pipe temperature Tc is higher than the first temperature threshold TL, it is determined that the jet valve (i.e., the compressor valve body) is connected to interface C.

[0065] As can be seen, in this application, during the cooling mode, the compressor draws out the low-temperature, low-pressure gaseous refrigerant from the evaporator. If the corresponding valve for the evaporator is open, the condenser will deliver low-temperature, low-pressure liquid refrigerant to the evaporator. During the cooling process, the liquid refrigerant will turn into gaseous refrigerant. Even if the compressor draws out some refrigerant, the temperature of the pipes inside the evaporator will decrease, and the pressure of the pipes inside the evaporator will not decrease. If the corresponding valve for the evaporator is closed, the refrigerant in the condenser cannot be delivered to the evaporator, and the compressor will draw out the low-temperature, low-pressure gaseous refrigerant from the evaporator, resulting in the pipe temperature inside the evaporator not decreasing and the pressure of the pipes inside the evaporator decreasing. Therefore, by selecting one control interface from each evaporator control interface in turn, and controlling the opening and closing of different valves, as well as recording the pipeline pressure or temperature values ​​in the evaporator, and comparing the recorded values ​​with preset values, it is possible to quickly and effectively determine whether the compressor valve (i.e., the jet valve) is correctly connected to the compressor control interface without the need for manual judgment, which greatly improves the interface error correction efficiency in the air conditioning system.

[0066] Furthermore, in one embodiment of this application, after determining that the compressor valve body is connected to the first target control interface, the first target control interface connected to the compressor valve body can be encoded as the compressor control interface, and the compressor control interface connected to the evaporator valve body can be encoded as the first target control interface (i.e., the evaporator control interface).

[0067] For example, refer to Figure 2 As shown, if interface a is selected as the first target control interface and it is determined that the compressor valve body (i.e., the jet valve) is connected to interface a, the interface code of interface a is changed to the interface code of the jet valve control interface (i.e., interface p), and the original interface code of interface p is changed to the interface code of interface a.

[0068] For example, refer to Figure 2 As shown, if interface b is selected as the first target control interface and it is determined that the compressor valve body (i.e., the jet valve) is connected to interface b, the interface code of interface b is changed to the interface code of the jet valve control interface (i.e., interface p), and the original interface code of interface p is changed to the interface code of interface b.

[0069] For example, refer to Figure 2 As shown, if interface C is selected as the first target control interface and it is determined that the compressor valve body (i.e., the jet valve) is connected to interface C, the interface code of interface C is changed to the interface code of the jet valve control interface (i.e., interface P), and the original interface code of interface P is changed to the interface code of interface C.

[0070] It should be emphasized that the above embodiments need to be executed after determining that the compressor valve body is connected to the first target control interface.

[0071] As can be seen, with further optimization in the embodiments of this application, when it is determined that the compressor valve body is incorrectly connected to the evaporator control interface, automatic error correction of the control interface can be achieved, thereby greatly reducing manual operation costs and providing great convenience.

[0072] In another embodiment of this application, to determine whether the compressor valve body is correctly connected to the compressor control interface, it can also be done by performing the following... Figure 4 The solution shown is used to achieve this.

[0073] Reference Figure 4 This paper shows another flowchart of the air conditioning system control method in an embodiment of this application. The scheme includes at least steps 410 to 470, which are described in detail below:

[0074] Step 410: In heating mode, a valve body closing command is output through the compressor control interface to close the valve body controlled by the compressor control interface.

[0075] Step 430: Select one control interface from multiple evaporator control interfaces as the second target control interface.

[0076] Step 450: For each second target control interface, output a valve opening command through the second target control interface to open the valve controlled by the second target control interface, and output a valve closing command through other evaporator control interfaces other than the second target control interface to close the valve controlled by the other evaporator control interfaces. After a second preset time, record the second pipeline pressure or second pipeline temperature in the condenser of the air conditioning system.

[0077] Step 470: If the pressure in the second pipeline is lower than the second pressure threshold, or the temperature in the second pipeline is higher than the second temperature threshold, then it is determined that the compressor valve body is connected to the first target control interface.

[0078] To enable those skilled in the art to better understand this application, the following will be combined with... Figure 2 The following is an illustration using a specific example.

[0079] Specifically, refer to Figure 2 After the heating mode is turned on, the compressor outputs a valve closing command through the compressor control interface (i.e., the P interface), causing the valve it controls to enter the closed state, that is, the opening degree of the valve it controls is 0.

[0080] After that, one of the multiple evaporator control interfaces (i.e., interface a, interface b, and interface c) is selected as the second target control interface.

[0081] Then, a valve opening command is output through the second target control interface, causing the valve it controls to enter the open state, meaning the opening degree of the valve it controls is not 0. A valve closing command is output through other evaporator control interfaces, causing the valve it controls to enter the closed state, meaning the opening degree of the valve it controls is 0. By closing the valves controlled by the P interface and other evaporator control interfaces, and only opening the valve controlled by the second target control interface, it acts as a control variable. After the compressor has run for a predetermined time, the pressure or temperature of the second pipeline in the evaporator corresponding to the second target control interface is recorded. This can be used as a criterion for determining whether the second target control interface and the compressor valve are correctly connected.

[0082] If the pressure in the second pipeline is lower than the second pressure threshold or the temperature in the second pipeline is higher than the second temperature threshold, then the compressor valve body is determined to be connected to the second target control interface. In other words, if the pressure in the second pipeline is always greater than or equal to the second pressure threshold or the temperature in the second pipeline is always less than or equal to the second temperature threshold, then the compressor valve body is determined to be correctly connected to the compressor control interface.

[0083] For example, such as Figure 2 As shown, if interface a is selected as the second target control interface, a valve opening command is output through interface a to open the valve controlled by interface a, and a valve closing command is output through interfaces b and c to close the valves controlled by interfaces b and c. After the compressor has been running for a predetermined time, the pipe pressure value Pa2 or the pipe temperature value Ta2 in the condenser is recorded. If the pipe pressure Pa2 is lower than the second pressure threshold, or the pipe temperature Ta2 is higher than the second temperature threshold, it is determined that the jet valve (i.e., the compressor valve body) is connected to interface a.

[0084] For example, such as Figure 2 As shown, if interface b is selected as the second target control interface, a valve opening command is output through interface b to open the valve body controlled by interface b, and a valve closing command is output through interfaces a and c to close the valve bodies controlled by interfaces a and c. After the compressor has been running for a predetermined time, the pipe pressure value Pb2 or the pipe temperature value Tb2 in the condenser is recorded. If the pipe pressure Pb2 is lower than the second pressure threshold, or the pipe temperature Tb2 is higher than the second temperature threshold, it is determined that the jet valve (i.e., the compressor valve body) is connected to interface b.

[0085] For example, such as Figure 2As shown, if interface C is selected as the second target control interface, a valve opening command is output through interface C to open the valve controlled by interface C, and a valve closing command is output through interfaces A and B to close the valves controlled by interfaces A and B. After the compressor has been running for a predetermined time, the pipe pressure value Pc2 or the pipe temperature value Tc2 in the condenser is recorded. If the pipe pressure Pc2 is lower than the second pressure threshold, or the pipe temperature Tc2 is higher than the second temperature threshold, it is determined that the jet valve (i.e., the compressor valve body) is connected to interface C.

[0086] As can be seen, in this application, during heating mode, the compressor draws refrigerant from the low-temperature, low-pressure gaseous condenser. If the corresponding valve of the evaporator is open, the evaporator will deliver low-temperature, low-pressure liquid refrigerant to the condenser. During heating, the liquid refrigerant will turn into gaseous refrigerant. Even if the compressor draws out some refrigerant, the temperature of the pipes inside the condenser will still decrease, and the pressure of the pipes inside the condenser will not decrease. If the corresponding valve of the evaporator is closed, the refrigerant in the evaporator cannot be delivered to the condenser, and the compressor will draw out the low-temperature, low-pressure gaseous refrigerant from the condenser, resulting in the pipe temperature inside the condenser not decreasing and the pressure of the pipes inside the condenser decreasing. Therefore, by selecting a control interface from each evaporator control interface in turn, and controlling the opening and closing of different valves, as well as recording the pipeline pressure or temperature values ​​in the condenser, and comparing the recorded values ​​with preset values, it is possible to quickly and effectively determine whether the compressor valve (i.e., the jet valve) is correctly connected to the compressor control interface without the need for manual judgment, which greatly improves the interface error correction efficiency in the air conditioning system.

[0087] Furthermore, in one embodiment of this application, after determining that the compressor valve body is connected to the second target control interface, the second target control interface connected to the compressor valve body can be encoded as a compressor control interface, and the compressor control interface connected to the evaporator valve body can be encoded as the second target control interface (i.e., the evaporator control interface).

[0088] For example, refer to Figure 2 As shown, if interface a is selected as the second target control interface and it is determined that the compressor valve body (i.e., the jet valve) is connected to interface a, the interface code of interface a is changed to the interface code of the jet valve control interface (i.e., interface p), and the original interface code of interface p is changed to the interface code of interface a.

[0089] For example, refer to Figure 2As shown, if interface b is selected as the second target control interface and it is determined that the compressor valve body (i.e., the jet valve) is connected to interface b, the interface code of interface b is changed to the interface code of the jet valve control interface (i.e., interface p), and the original interface code of interface p is changed to the interface code of interface b.

[0090] For example, refer to Figure 2 As shown, if interface C is selected as the second target control interface and it is determined that the compressor valve body (i.e., the jet valve) is connected to interface C, the interface code of interface C is changed to the interface code of the jet valve control interface (i.e., interface P), and the original interface code of interface P is changed to the interface code of interface C.

[0091] It should be emphasized that the above embodiments need to be executed after determining that the compressor valve body is connected to the first target control interface.

[0092] As can be seen, with further optimization in the embodiments of this application, when it is determined that the compressor valve body is incorrectly connected to the evaporator control interface, the control interface can be automatically corrected, thereby greatly reducing manual operation costs and providing great convenience.

[0093] In one embodiment of this application, after confirming that the compressor valve body is correctly connected to the compressor control interface, the following can also be performed: Figure 5 The scheme shown.

[0094] See Figure 5 This illustrates another flowchart of the air conditioning system control method in an embodiment of this application. Specifically, it includes steps 510 to 570:

[0095] Step 510: In cooling mode, a valve body closing command is output through the compressor control interface to close the compressor valve body controlled by the compressor control interface.

[0096] Step 530: Select one control interface from multiple evaporator control interfaces as the third target control interface in sequence. The evaporator control interfaces other than the third target control interface are designated as other evaporator control interfaces. The evaporator corresponding to the third target control interface is designated as the third target evaporator. The evaporators other than the third target evaporator are designated as other evaporators.

[0097] Step 550: For each third target control interface, output a valve opening command through the third target control interface to open the valve controlled by the third target control interface, and output a valve closing command through the other evaporator control interfaces to close the valve controlled by the other evaporator control interfaces. After a third preset time, record the third pipeline pressure or third pipeline temperature in each evaporator.

[0098] Step 570: If the third pipeline pressure of the other evaporator is higher than the third pressure threshold, or the third pipeline temperature is lower than the third temperature threshold, then it is determined that the evaporator valve body corresponding to the other evaporator is connected to the third target control interface.

[0099] To enable those skilled in the art to better understand this application, the following will continue to combine... Figure 2 The following is an illustration using a specific example.

[0100] Specifically, refer to Figure 2 As shown, after the cooling mode is turned on, a valve body closing command is output through the compressor control interface (i.e., the p interface), causing the valve body it controls to enter the closed state, that is, the opening degree of the valve body it controls is 0.

[0101] Following this, one of the multiple evaporator control interfaces (i.e., interface a, interface b, and interface c) is selected as the third target control interface. Then, a valve opening command is output through the third target control interface, causing the valve it controls to enter the open state (i.e., the valve opening degree is not zero). A valve closing command is output through the other evaporator control interfaces, causing the valves it controls to enter the closed state (i.e., the valve opening degree is zero). By closing the valves controlled by interface p and other evaporator control interfaces, and only opening the valve controlled by the third target control interface, it acts as a control variable. After the compressor has run for a predetermined time (e.g., 2 to 30 minutes), the pressure or temperature of the third pipeline in the evaporator corresponding to the third target control interface is recorded. This serves as the basis for determining whether the third target control interface is connected to the evaporator valves corresponding to other evaporators.

[0102] If the third line pressure of other evaporators is lower than the third pressure threshold or the third line temperature is higher than the third temperature threshold, then the evaporator valve body corresponding to the other evaporator is determined to be connected to the third target control interface. In other words, if the third line pressure of other evaporators is greater than or equal to the third pressure threshold or the third line temperature is less than or equal to the third temperature threshold, then the third target control interface is determined to be connected to the correct valve body.

[0103] For example, such as Figure 2As shown, if interface a is selected as the third target control interface, a valve opening command is output through interface a to open the valve body (i.e., the branch valve) controlled by interface a. Valve closing commands are output through interfaces b and c to close the valve bodies (i.e., the branch valves) controlled by interfaces b and c. After the compressor has been running for 2 to 30 minutes, the pipe pressure values ​​Pa3, Pb3, and Pc3, or the pipe temperature values ​​Ta3, Tb3, and Tc3 for evaporators A, B, and C are recorded. If the pipe pressure Pb3 or Pc3 is higher than the third pressure threshold PL3, or the pipe temperature Tb3 or Tc3 is lower than the third temperature threshold TL3, then it is determined that the evaporator valve body corresponding to evaporator B or evaporator C is connected to interface a.

[0104] For example, such as Figure 2 As shown, if interface b is selected as the third target control interface, a valve opening command is output through interface b to open the valve body (i.e., the branch valve) controlled by interface b. A valve closing command is output through interfaces a and c to close the valve bodies (i.e., the branch valves) controlled by interfaces a and c. After the compressor has been running for 2 to 30 minutes, the pipe pressure values ​​Pa3, Pb3, and Pc3, or the pipe temperature values ​​Ta3, Tb3, and Tc3 for evaporators A, B, and C are recorded. If the pipe pressure Pa3 or Pc3 is higher than the third pressure threshold PL3, or the pipe temperature Ta3 or Tc3 is lower than the third temperature threshold TL3, then it is determined that the evaporator valve body corresponding to evaporator A or evaporator C is connected to interface b.

[0105] For example, such as Figure 2 As shown, if interface C is selected as the third target control interface, a valve opening command is output through interface C to open the valve body (i.e., the branch valve) controlled by interface C. A valve closing command is output through interfaces A and B to close the valve bodies (i.e., the branch valves) controlled by interfaces A and B. After the compressor has been running for 2 to 30 minutes, the pipe pressure values ​​Pa3, Pb3, and Pc3, or the pipe temperature values ​​Ta3, Tb3, and Tc3 for evaporators A, B, and C are recorded. If the pipe pressure Pa3 or Pb3 is higher than the third pressure threshold PL3, or the pipe temperature Ta3 or Tb3 is lower than the third temperature threshold TL3, then it is determined that the evaporator valve body corresponding to evaporator A or evaporator B is connected to interface C.

[0106] As can be seen, in this embodiment, in cooling mode, the compressor draws out low-temperature, low-pressure gaseous refrigerant from the evaporator. If the corresponding valve for the evaporator is open, the condenser delivers low-temperature, low-pressure liquid refrigerant to the evaporator. During cooling, the liquid refrigerant becomes gaseous. Even if the compressor draws out some refrigerant, the pipe temperature inside the evaporator does not decrease, nor does the pipe pressure. If the corresponding valve for the evaporator is closed, the refrigerant in the condenser cannot be delivered to the evaporator, and the compressor draws out the low-temperature, low-pressure gaseous refrigerant from the evaporator, resulting in no decrease in the pipe temperature and pressure inside the evaporator. Therefore, by controlling the opening and closing of different valves and recording the pipe pressure or temperature values ​​in the evaporator, and comparing the recorded values ​​with preset values, it is possible to quickly and effectively determine whether the evaporator valve is connected to the correct control interface.

[0107] Furthermore, in one embodiment of this application, after determining that the evaporator valve body corresponding to the other evaporator is connected to the third target control interface, the third target control interface connected to the evaporator valve body corresponding to the other evaporator can be encoded as the other evaporator control interface, and further, the other evaporator control interface connected to the evaporator valve body corresponding to the third target evaporator can be encoded as the third target control interface.

[0108] For example, refer to Figure 2 As shown, if interface a is selected as the third target control interface and the evaporator valve body corresponding to the evaporator B is connected to interface a, the interface code of interface a is changed to the evaporator control interface code corresponding to evaporator B, that is, the code of interface a is changed to the code of interface b, and furthermore, the original code of interface b can be changed to the code of interface a.

[0109] For example, refer to Figure 2 As shown, if interface b is selected as the third target control interface and the evaporator valve body corresponding to the evaporator C is connected to interface b, the interface code of interface b is changed to the evaporator control interface code corresponding to evaporator C, that is, the code of interface b is changed to the code of interface c, and furthermore, the original code of interface c can be changed to the code of interface b.

[0110] For example, refer to Figure 2 As shown, if interface c is selected as the third target control interface and the evaporator valve body corresponding to the evaporator A is connected to interface c, the interface code of interface c is changed to the evaporator control interface code corresponding to evaporator A, that is, the code of interface c is changed to the code of interface a, and furthermore, the original code of interface a can be changed to the code of interface c.

[0111] It should be noted that further optimization methods need to be implemented after determining that the evaporator valve body corresponding to other evaporators is connected to the third target control interface.

[0112] As can be seen, with further optimization in the embodiments of this application, it is possible to determine whether the evaporator valve body is correctly connected to the corresponding evaporator control interface, and also to achieve automatic error correction of the control interface, which greatly reduces the cost of manual operation and provides great convenience.

[0113] Furthermore, in one embodiment of this application, in such... Figure 5 Before step 530 is executed, that is, before selecting one control interface as the third target control interface from among multiple evaporator control interfaces in sequence, the following can also be executed: Figure 6 The steps are shown.

[0114] See Figure 6 This document illustrates a flowchart of a method in an embodiment of this application prior to sequentially selecting one control interface from multiple evaporator control interfaces as the third target control interface. Specifically, it includes steps 521 to 523:

[0115] Step 521: Obtain the initial pipeline pressure or initial pipeline temperature in each evaporator.

[0116] Step 522: Based on the initial piping pressure in each evaporator, calculate the third pressure threshold for each evaporator using the corresponding pressure threshold adjustment value. Alternatively,

[0117] Step 523: Based on the initial pipe temperature in each evaporator, calculate the third temperature threshold for each evaporator using the corresponding temperature threshold adjustment value.

[0118] Specifically, in such Figure 5 Following step 510, i.e., after the compressor control interface outputs the valve body closing command, the initial pipeline pressure or initial pipeline temperature of each evaporator is acquired, i.e., Pa0, Pb0, Pc0 or Ta0, Tb0, Tc0. The acquired initial pipeline pressure or initial pipeline temperature provides a basis for subsequent numerical comparisons. Then, the corresponding threshold is calculated using the pressure threshold adjustment value or temperature threshold adjustment value in conjunction with step 521. The detailed steps involve subtracting the adjustment value from the initial value, i.e., Px0 minus the pressure threshold adjustment value or Tx0 minus the temperature threshold adjustment value (for example, 2℃~10℃), to obtain the corresponding third pressure threshold or third temperature threshold for the evaporator. It should be noted that x here represents a, b, or c.

[0119] In addition, such as Figure 5The determination method in step 570 shown can also be performed in the following way: Before sequentially selecting one control interface from multiple evaporator control interfaces as the third target control interface, obtain the initial pipeline pressure or initial pipeline temperature of each evaporator, i.e., Pa0, Pb0, Pc0 or Ta0, Tb0, Tc0. Then, through... Figure 5 Step 550 shows the acquisition of the third-line pressure or temperature in each evaporator, i.e., Pa3, Pb3, and Pc3, or Ta3, Tb3, and Tc3. Then, the difference between Px0 and Px3, or the difference between Tx0 and Tx3, is calculated and compared with the corresponding threshold adjustment value. When the recorded value is a temperature value, it is determined whether the temperature difference is greater than the temperature threshold adjustment value, i.e., whether the expression Tx0 - Tx3 > temperature threshold adjustment value is true. It should be noted that x here represents a, b, or c.

[0120] For example, continue to refer to Figure 2 If interface a is the third target control interface, then determine whether the expression Tb0-Tb3 > temperature threshold adjustment value or the expression Tb0-Tb3 > temperature threshold adjustment value is true. If true, then determine whether the branch valve corresponding to evaporator B or evaporator C is connected to interface a. If interface b is the third target control interface, then determine whether the expression Ta0-Ta3 > temperature threshold adjustment value or the expression Tc0-Tc3 > temperature threshold adjustment value is true. If true, then determine whether the branch valve corresponding to evaporator A or evaporator C is connected to interface b. If interface c is the third target control interface, then determine whether the expression Ta0-Ta3 > temperature threshold adjustment value or the expression Tb0-Tb3 > temperature threshold adjustment value is true. If true, then determine whether the branch valve corresponding to evaporator A or evaporator B is connected to interface c.

[0121] As can be seen, in this application, by triggering the compressor control interface to output a valve body closing command, and sequentially selecting a first target control interface from multiple evaporator control interfaces to trigger a valve body opening command, and triggering the valve body closing command through other evaporator controls, and finally recording the first pipeline pressure or first pipeline temperature in the evaporator corresponding to the first target control interface, and comparing the recorded value with a preset value, it is possible to quickly and effectively determine whether the control interface connected to the compressor valve body is incorrect, without the need for manual judgment, thereby greatly improving the interface error correction efficiency in the air conditioning system.

[0122] Figure 7 A schematic diagram of the structure of the air conditioning system control device in an embodiment of this application is shown.

[0123] Based on the same inventive concept, embodiments of this application also provide an air conditioning system control device. (Reference) Figure 7The diagram shows a schematic of the structure of an air conditioning system control device according to an embodiment of this application. The air conditioning system control device includes one or more memories 704, one or more processors 702, and at least one computer program (program code) stored in the memory 704 and executable on the processor 702. When the processor 702 executes the computer program, it implements the air conditioning system control method as described above.

[0124] Among them, Figure 7 In this document, a bus architecture (represented by bus 700) is used. Bus 700 may include any number of interconnected buses and bridges, linking various circuits including one or more processors represented by processor 702 and memory represented by memory 704. Bus 700 may also link various other circuits such as peripheral devices, voltage regulators, and power management circuits, which are well known in the art and therefore will not be described further herein. Bus interface 705 provides an interface between bus 700 and receiver 701 and transmitter 703. Receiver 701 and transmitter 703 may be the same element, i.e., a transceiver, providing a unit for communicating with various other devices over a transmission medium. Processor 702 is responsible for managing bus 700 and general processing, while memory 704 can be used to store data used by processor 702 during operation.

[0125] This application also proposes an air conditioning system, which may include a compressor valve body, multiple evaporator valve bodies, and evaporators corresponding to each of the evaporator valve bodies. The compressor valve body controls the refrigerant flow to the compressor, and the evaporator valve body controls the refrigerant flow to the evaporator. The opening degree of both the compressor valve body and the evaporator valve body is controlled via corresponding control interfaces. The air conditioning system also includes... Figure 7 The air conditioning system control device shown.

[0126] The functions described herein may be implemented in hardware, software executed by a processor, firmware, or any combination thereof. If implemented in software executed by a processor, the functions may be stored as one or more instructions or codes on or transmitted via a computer-readable medium. Other examples and embodiments are within the scope and spirit of this application and the appended claims. For example, due to the nature of software, the functions described above may be implemented using software executed by a processor, hardware, firmware, hardwired, or any combination thereof. Furthermore, the functional units may be integrated into a single processing unit, or each unit may exist physically separately, or two or more units may be integrated into a single unit.

[0127] In the several embodiments provided in this application, it should be understood that the disclosed technical content can be implemented in other ways. The device embodiments described above are merely illustrative; for example, the division of units can be a logical functional division, and in actual implementation, there may be other division methods. For instance, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the displayed or discussed mutual coupling, direct coupling, or communication connection may be through some interfaces; the indirect coupling or communication connection between units or modules may be electrical or other forms.

[0128] The units described as separate components may or may not be physically separate. Similarly, the components of the control device may or may not be physical units; they may be located in one place or distributed across multiple units. Some or all of the units can be selected to achieve the purpose of this embodiment, depending on actual needs.

[0129] If the integrated unit is implemented as a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, or all or part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of this application. The aforementioned storage medium includes various media capable of storing program code, such as a USB flash drive, read-only memory (ROM), random access memory (RAM), portable hard drive, magnetic disk, or optical disk.

[0130] The above description is merely an embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of the claims of this application.

Claims

1. A method for controlling an air conditioning system, characterized in that, The air conditioning system includes a compressor valve body, multiple evaporator valve bodies, evaporators corresponding to each evaporator valve body, and a plate heat exchanger. The compressor valve body controls the refrigerant flow to the compressor, and the evaporator valve body controls the refrigerant flow to the evaporator. Refrigerant flowing out of the condenser flows through a first channel in the plate heat exchanger and then into the evaporator. A portion of the refrigerant passing through the plate heat exchanger is diverted to the compressor valve body and then flows into a second channel of the plate heat exchanger. The refrigerant flowing through the second channel of the plate heat exchanger flows into the compressor. The opening degrees of both the compressor valve body and the evaporator valve body are controlled via corresponding control interfaces. The method includes: In cooling mode, a valve body closing command is output through the compressor control interface to close the valve body controlled by the compressor control interface; Select one control interface from multiple evaporator control interfaces as the first target control interface; For each first target control interface, a valve opening command is output through the first target control interface to open the valve controlled by the first target control interface, and a valve closing command is output through other evaporator control interfaces other than the first target control interface to close the valve controlled by the other evaporator control interfaces. After a first preset time, the first pipeline pressure or the first pipeline temperature in the evaporator corresponding to the first target control interface is recorded. If the pressure in the first pipeline is lower than the first pressure threshold, or the temperature in the first pipeline is higher than the first temperature threshold, then it is determined that the compressor valve body is connected to the first target control interface.

2. The method according to claim 1, characterized in that, The first pressure threshold is -0.05 MPa to 0.6 MPa.

3. The method according to claim 1, characterized in that, After determining that the compressor valve body is connected to the first target control interface, the method further includes: The first target control interface connected to the compressor valve body is encoded as the compressor control interface.

4. The method according to claim 1, characterized in that, After determining that the compressor valve body is connected to the first target control interface, the method further includes: The compressor control interface connected to the corresponding evaporator valve body is encoded as the first target control interface.

5. The method according to claim 1, characterized in that, The method further includes: In heating mode, a valve body closing command is output through the compressor control interface to close the valve body controlled by the compressor control interface; Select one control interface from multiple evaporator control interfaces as the second target control interface in turn; For each second target control interface, a valve opening command is output through the second target control interface to open the valve controlled by the second target control interface, and a valve closing command is output through other evaporator control interfaces other than the second target control interface to close the valve controlled by the other evaporator control interfaces. After a second preset time, the pressure or temperature of the second pipeline in the condenser of the air conditioning system is recorded. If the pressure in the second pipeline is lower than the second pressure threshold, or the temperature in the second pipeline is higher than the second temperature threshold, then it is determined that the compressor valve body is connected to the second target control interface.

6. The method according to claim 5, characterized in that, After determining that the compressor valve body is connected to the second target control interface, the method further includes: The second target control interface connected to the compressor valve body is encoded as the compressor control interface.

7. The method according to claim 5, characterized in that, After determining that the compressor valve body is connected to the second target control interface, the method further includes: The compressor control interface connected to the corresponding evaporator valve body is encoded as the second target control interface.

8. The method according to any one of claims 1 to 7, characterized in that, After the compressor valve body is connected to the compressor control interface, the method further includes: In cooling mode, a valve body closing command is output through the compressor control interface to close the compressor valve body controlled by the compressor control interface; Select one control interface from multiple evaporator control interfaces as the third target control interface in sequence. Then, the evaporator control interfaces other than the third target control interface are used as other evaporator control interfaces, the evaporator corresponding to the third target control interface is used as the third target evaporator, and the evaporators other than the third target evaporator are used as other evaporators. For each third target control interface, a valve opening command is output through the third target control interface to open the valve controlled by the third target control interface, and a valve closing command is output through the other evaporator control interfaces to close the valve controlled by the other evaporator control interfaces. After a third preset time, the third pipeline pressure or third pipeline temperature in each evaporator is recorded. If the third pipeline pressure of the other evaporator is higher than the third pressure threshold, or the third pipeline temperature is lower than the third temperature threshold, then it is determined that the evaporator valve body corresponding to the other evaporator is connected to the third target control interface.

9. The method according to claim 8, characterized in that, Before sequentially selecting one control interface from multiple evaporator control interfaces as the third target control interface, the method further includes: Obtain the initial piping pressure or initial piping temperature in each evaporator; Based on the initial piping pressure in each evaporator, the third pressure threshold for each evaporator is calculated using the corresponding pressure threshold adjustment value; or... Based on the initial pipe temperature in each evaporator, the third temperature threshold for each evaporator is calculated using the corresponding temperature threshold adjustment value.

10. The method according to claim 9, characterized in that, The temperature threshold adjustment value is 2℃~10℃.

11. The method according to claim 8, characterized in that, The third preset time is 3 min to 30 min.

12. The method according to claim 8, characterized in that, After determining that the evaporator valve body corresponding to other evaporators is connected to the third target control interface, the method further includes: The third target control interface connected to the evaporator valve body corresponding to the other evaporators is encoded as the control interface of the other evaporators.

13. The method according to claim 8, characterized in that, After determining that the evaporator valve body corresponding to other evaporators is connected to the third target control interface, the method further includes: The other evaporator control interfaces connected to the evaporator valve body corresponding to the third target evaporator are encoded as the third target control interface.

14. An air conditioning system control device, characterized in that, The method includes one or more processors and one or more memories, wherein at least one piece of program code is stored in the one or more memories, and the at least one piece of program code is loaded and executed by the one or more processors to implement the method as claimed in any one of claims 1-13.

15. An air conditioning system, characterized in that, The air conditioning system includes a compressor valve body, multiple evaporator valve bodies, and evaporators corresponding to each evaporator valve body. The compressor valve body is used to control the refrigerant flow to the compressor, and the evaporator valve body is used to control the refrigerant flow to the evaporator. The opening degree of the compressor valve body and the opening degree of the evaporator valve body are both controlled through corresponding control interfaces. The air conditioning system also includes the air conditioning system control device as described in claim 14.

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