Method and device for detecting misconnection of parts of dual-system air conditioner and air conditioner

Abstract

The invention relates to the technical field of air conditioners, and provides a method and device for detecting misconnection of parts of a dual-system air conditioner and the air conditioner. The detection method comprises the steps that in response to a starting instruction, one air conditioning system of the dual-system air conditioner is determined as a target air conditioning system and is started to operate; acquiring a detection parameter change difference value of the refrigerant pipeline sensor before and after the target air conditioning system operates for a first set time length; and according to the detection parameter change difference value of the refrigerant pipeline sensor, whether the refrigerant pipeline sensor of the dual-system air conditioner is reversely connected or not is judged. The problem of abnormal operation of the air conditioner caused by manual assembly errors can be avoided, and the stability and reliability of operation of the dual-system air conditioner are enhanced.

Description

Technical Field

[0001] The present invention relates to the technical field of air conditioning, and in particular to a method and device for detecting misconnection of components of a dual-system air conditioner, and the air conditioner. Background Art

[0002] In the related art, a dual-system air conditioner mainly refers to an air-conditioning device with two air-conditioning systems. Under high load, both systems are fully opened, and under low load, only one system is opened to achieve energy saving effects.

[0003] However, dual-system air conditioners have numerous components, such as compressors, temperature sensors, pressure sensors, and pressure switches, which present the risk of incorrect insertion during production and assembly. Currently, most manufacturers mitigate this risk through labeling, color, cable length, plug differentiation, and enhanced controls. However, this approach cannot completely eliminate the risk and increases the variety of component materials. Summary of the Invention

[0004] The present invention provides a method and device for detecting misconnection of components of a dual-system air conditioner, and an air conditioner. The method avoids problems caused by misconnection of components through control logic, improves the operational reliability of the dual-system air conditioner, and reduces the number of components, which is conducive to standardized design of components.

[0005] The present invention provides a method for detecting misconnection of components of a dual-system air conditioner, wherein the dual-system air conditioner components include a refrigerant pipeline sensor; the detection method comprises:

[0006] In response to the power-on instruction, determining one of the air-conditioning systems of the dual-system air-conditioner as a target air-conditioning system and starting the operation;

[0007] Obtaining a difference in a detection parameter change of a refrigerant pipeline sensor before and after the target air-conditioning system operates for a first set time;

[0008] According to the difference in the change of the detection parameters of the refrigerant pipeline sensor, it is determined whether the refrigerant pipeline sensor of the dual-system air conditioner is connected reversely.

[0009] According to a method for detecting incorrect connection of components of a dual-system air conditioner provided by the present invention, the refrigerant pipeline sensor includes a temperature sensor; and the step of determining whether the refrigerant pipeline sensor of the dual-system air conditioner is connected incorrectly based on a difference in a detection parameter of the refrigerant pipeline sensor comprises:

[0010] Determining that a temperature change difference of the temperature sensor of the target air-conditioning system is greater than a first set value, and determining that the temperature sensors of the dual-system air-conditioning system are properly connected;

[0011] It is determined that the temperature change difference of the temperature sensors of the target air-conditioning system is less than or equal to a first set value, and it is determined that the temperature sensors of the dual-system air-conditioner are connected reversely.

[0012] According to the present invention, a method for detecting incorrect connection of components of a dual-system air conditioner further comprises, after determining that the temperature sensors of the dual-system air conditioner are connected in reverse, the following steps:

[0013] Assigning the detection value of the temperature sensor of the target air-conditioning system to the other air-conditioning system of the dual-system air-conditioner, and assigning the detection value of the temperature sensor of the other air-conditioning system to the target air-conditioning system;

[0014] A prompt message is issued indicating that the temperature sensor is connected incorrectly.

[0015] According to a method for detecting incorrect connection of components in a dual-system air conditioner provided by the present invention, the refrigerant pipeline sensor includes a pressure sensor; and the step of determining whether the refrigerant pipeline sensor of the dual-system air conditioner is connected incorrectly based on a difference in a detection parameter of the refrigerant pipeline sensor comprises:

[0016] Determining that a pressure change difference of the pressure sensor of the target air conditioning system is greater than a second set value, and determining that the pressure sensors of the dual-system air conditioner are properly connected;

[0017] It is determined that the pressure change difference of the pressure sensor of the target air-conditioning system is less than or equal to a second set value, and it is determined that the pressure sensors of the dual-system air-conditioner are connected reversely.

[0018] According to the present invention, a method for detecting incorrect connection of components of a dual-system air conditioner further comprises, after determining that the pressure sensors of the dual-system air conditioner are connected in reverse, the following steps:

[0019] Assigning the detection value of the pressure sensor of the target air-conditioning system to the other air-conditioning system of the dual-system air-conditioner, and assigning the detection value of the pressure sensor of the other air-conditioning system to the target air-conditioning system;

[0020] A prompt message is issued indicating that the pressure sensor is connected reversely.

[0021] According to a method for detecting misconnection of components of a dual-system air conditioner provided by the present invention, the dual-system air conditioner components further include a compressor; the detection method further includes:

[0022] In response to the power-on instruction, determining one of the air-conditioning systems of the dual-system air-conditioner as a target air-conditioning system and starting the operation;

[0023] Obtaining a current change difference of the compressor of the target air-conditioning system before and after the second set time period, and a current change difference of the compressor of the other air-conditioning system of the dual-system air-conditioner before and after the second set time period;

[0024] Based on the difference in current change of the compressor of the target air-conditioning system before and after the second set time period and the difference in current change of the compressor of the other air-conditioning system of the dual-system air-conditioner before and after the second set time period, it is determined whether the compressor wiring of the dual-system air-conditioner is wrongly connected.

[0025] According to the present invention, a method for detecting misconnection of components in a dual-system air conditioner includes the steps of determining whether the compressor of the dual-system air conditioner is misconnected based on a difference in current change of the compressor of the target air conditioning system before and after the second set time period and a difference in current change of the compressor of the other air conditioning system of the dual-system air conditioner before and after the second set time period, including:

[0026] If the difference in current change of the compressor of the target air-conditioning system before and after the second set time is greater than a third set value, and the difference in current change of the compressor of the other air-conditioning system of the dual-system air-conditioning system before and after the second set time is less than a fourth set value, it is determined that the wiring of the compressor of the dual-system air-conditioning system is normal;

[0027] If the difference in current change of the compressor of the target air-conditioning system before and after the second set time is less than or equal to the third set value, or the difference in current change of the compressor of the other air-conditioning system of the dual-system air-conditioner before and after the second set time is greater than or equal to the fourth set value, it is determined that the compressor wiring of the dual-system air-conditioner is misconnected.

[0028] According to the present invention, a method for detecting misconnection of components of a dual-system air conditioner further comprises, after determining that the compressor wiring of the dual-system air conditioner is misconnected:

[0029] Controlling the compressor of the dual-system air conditioner to stop;

[0030] A prompt message is issued indicating that the compressor wiring is incorrectly connected.

[0031] According to a method for detecting misconnection of components of a dual-system air conditioner provided by the present invention, the dual-system air conditioner components further include a pressure switch; the detection method further includes:

[0032] During the operation of the dual-system air conditioner, determining one of the air conditioning systems of the dual-system air conditioner as a target air conditioning system;

[0033] If the pressure switch of the target air-conditioning system triggers the pressure protection, controlling the compressor of the target air-conditioning system to stop;

[0034] After the compressor of the target air-conditioning system stops, obtaining a duration of a pressure switch of the target air-conditioning system triggering pressure protection;

[0035] According to the duration of the pressure protection triggered by the pressure switch of the target air-conditioning system, it is determined whether the pressure switches of the dual-system air conditioner are connected reversely.

[0036] According to the present invention, a method for detecting misconnection of components of a dual-system air conditioner is provided, wherein the step of determining whether the pressure switch of the dual-system air conditioner is connected incorrectly based on the duration of the pressure protection triggered by the pressure switch of the target air conditioning system comprises:

[0037] If the duration of the pressure protection triggered by the pressure switch of the target air-conditioning system is less than a fifth set value, it is determined that the pressure switch of the dual-system air-conditioning system is connected normally;

[0038] If the duration of the pressure protection triggered by the pressure switch of the target air-conditioning system is greater than or equal to a fifth set value, it is determined that the pressure switches of the dual-system air-conditioner are connected reversely.

[0039] According to the present invention, a method for detecting misconnection of components of a dual-system air conditioner further comprises, after determining that the pressure switch of the dual-system air conditioner is connected in reverse, the following steps:

[0040] Controlling the compressor of the other air-conditioning system of the dual-system air-conditioner to stop, and swapping the association relationship of the pressure switches of the dual-system air-conditioner;

[0041] A warning message is issued indicating that the pressure switch is connected reversely.

[0042] The present invention also provides a device for detecting misconnection of components of a dual-system air conditioner, wherein the dual-system air conditioner components include a refrigerant pipeline sensor; the detection device includes:

[0043] a determination module, configured to, in response to a power-on instruction, determine one of the air-conditioning systems of the dual-system air-conditioner as a target air-conditioning system and start the operation thereof;

[0044] an acquisition module, configured to acquire a difference in a detection parameter change of a refrigerant pipeline sensor before and after the target air-conditioning system runs for a first set time;

[0045] The determination module is used to determine whether the refrigerant pipeline sensor of the dual-system air conditioner is connected reversely according to the difference in detection parameter changes of the refrigerant pipeline sensor.

[0046] The present invention also provides an air conditioner, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor. When the processor executes the program, the method for detecting misconnection of components of a dual-system air conditioner is implemented.

[0047] The method, device and air conditioner for detecting misconnection of dual-system air conditioner parts provided by the present invention avoid abnormal operation of the air conditioner due to human assembly errors through an intelligent detection and correction mechanism at the software level. This not only enhances the stability and reliability of the operation of the dual-system air conditioner, but also helps to simplify the production and assembly process, reduce the types of parts, promote the standardized design of parts, and reduce production and maintenance costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0048] In order to more clearly illustrate the technical solutions in the present invention or related technologies, the following briefly introduces the drawings required for use in the embodiments or related technical descriptions. 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.

[0049] Figure 1 It is a structural schematic diagram of the dual-system air conditioner provided by the present invention.

[0050] Figure 2 This is one of the flow charts of the method for detecting misconnection of components of a dual-system air conditioner provided by the present invention;

[0051] Figure 3 This is the second flow chart of the method for detecting misconnection of components of a dual-system air conditioner provided by the present invention;

[0052] Figure 4 This is the third flow chart of the method for detecting misconnection of components of a dual-system air conditioner provided by the present invention;

[0053] Figure 5 This is the fourth flow chart of the method for detecting misconnection of components of a dual-system air conditioner provided by the present invention;

[0054] Figure 6 This is the fifth flow chart of the method for detecting misconnection of components of a dual-system air conditioner provided by the present invention;

[0055] Figure 7 The present invention is a schematic structural diagram of a device for detecting misconnection of components of a dual-system air conditioner.

[0056] Reference numerals:

[0057] 101: Refrigerant pipeline; 102: Compressor; 103: Condenser; 104: Filter;

[0058] 105: throttle valve; 106: evaporator; 107: temperature sensor;

[0059] 108: pressure sensor; 109: pressure switch; 110: outdoor fan;

[0060] 111: Indoor fan;

[0061] 701: determination module; 702: acquisition module; 703: judgment module. DETAILED DESCRIPTION

[0062] To make the objectives, technical solutions, and advantages of the present invention more clear, the technical solutions of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts shall fall within the scope of protection of the present invention.

[0063] In the description of the embodiments of the present invention, it should be noted that the terms “first”, “second”, etc. are only used for descriptive purposes and should not be understood as indicating or implying relative importance.

[0064] In the description of this specification, the reference terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the embodiment of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and features of different embodiments or examples without contradiction.

[0065] According to one embodiment of the present invention, referring to Figure 1 As shown, the dual-system air conditioner provided by the present invention mainly includes two air-conditioning systems, each air-conditioning system includes a compressor 102, a condenser 103, a filter 104, a throttle valve 105 and an evaporator 106 which are circulated and connected through a refrigerant pipeline 101, and components such as a temperature sensor 107, a pressure sensor 108 and a pressure switch 109 can be set on the refrigerant pipeline 101. An outdoor fan 110 is set side by side with the condenser 103, and an indoor fan 111 is set side by side with the evaporator 106.

[0066] The following describes the method for detecting misconnection of components of the dual-system air conditioner provided by the present invention.

[0067] According to one embodiment of the present invention, referring to Figure 2 As shown, the dual-system air conditioner components include a refrigerant pipeline sensor. The present invention provides a method for detecting misconnection of dual-system air conditioner components, which mainly includes the following steps:

[0068] S201 : In response to a power-on instruction, determine one of the air-conditioning systems of the dual-system air-conditioner as a target air-conditioning system and start the system.

[0069] When a power-on command is received, any one of the dual-system air conditioners is selected and started as the target air conditioner for separate operation, so that the operating parameters of a single system can be easily monitored.

[0070] S202: Obtain a difference in a detection parameter change of a refrigerant pipeline sensor before and after the target air-conditioning system runs for a first set time.

[0071] After the target air conditioning system is turned on and runs for a period of time, the difference in detection parameter changes of the temperature sensor or pressure sensor on the refrigerant pipeline of the air conditioning system is obtained. This difference reflects the physical quantity changes that should occur in each stage of the refrigeration cycle during normal operation, such as temperature changes and pressure increases and decreases.

[0072] S203: Determine whether the refrigerant pipeline sensor of the dual-system air conditioner is connected reversely based on the difference in detection parameter changes of the refrigerant pipeline sensor.

[0073] By comparing and analyzing the differences in these test parameter changes to see if they fall within the expected range or trend, we can determine whether the refrigerant pipe sensor is correctly installed or connected to the corresponding air conditioning system. If the test parameter changes do not conform to normal operating conditions, such as if the temperature sensor fails to show a reasonable temperature rise or fall during operation, the sensor is determined to be connected incorrectly.

[0074] Therefore, the method for detecting misconnected components in dual-system air conditioners, provided by the present invention, can automatically identify sensor misconnections in dual-system air conditioners without relying on manual inspection, thereby improving equipment reliability and maintenance efficiency. Furthermore, this intelligent detection technology simplifies the production and maintenance process, reducing potential problems caused by human assembly errors.

[0075] According to one embodiment of the present invention, the refrigerant pipeline sensor includes a temperature sensor; and the step of determining whether the refrigerant pipeline sensor of the dual-system air conditioner is connected reversely based on a difference in a detection parameter of the refrigerant pipeline sensor comprises:

[0076] Determining that the temperature change difference of the temperature sensor of the target air-conditioning system is greater than a first set value, and determining that the temperature sensors of the dual-system air conditioners are properly connected;

[0077] It is determined that the temperature change difference of the temperature sensors of the target air-conditioning system is less than or equal to a first set value, and it is determined that the temperature sensors of the dual-system air conditioners are connected reversely.

[0078] In this embodiment of the present invention, the temperature sensor in the refrigerant pipeline sensor is monitored to determine whether it is correctly installed or connected incorrectly by monitoring its temperature change difference. The specific steps are as follows:

[0079] 1. Before and after the target air conditioning system runs for a first set time, obtain the temperature data detected by the temperature sensor and calculate the temperature change difference during this time period.

[0080] 2. When it is determined that the temperature change difference of the temperature sensor of the target air-conditioning system is greater than a predetermined first set value, this generally means that the temperature sensor exhibits a reasonable temperature increase or decrease trend during a normal cooling / heating cycle. Therefore, it can be determined that the connection between the temperature sensor and the corresponding air-conditioning system is normal and can accurately reflect changes in the refrigerant state within the air-conditioning system.

[0081] 3. Conversely, if the temperature change difference of the target air conditioning system's temperature sensor is less than or equal to the preset first set value, the sensor is connected incorrectly. Under normal operating conditions, the temperature sensor should experience significant temperature changes as the refrigerant circulates within the system. Reverse connection will prevent the sensor from correctly sensing temperature changes at the corresponding location, thus failing to accurately reflect the operating status of the air conditioning system.

[0082] The automatic detection method provided by the embodiment of the present invention can quickly identify installation errors of the temperature sensor during the startup phase, and through subsequent logical processing (such as exchanging the readings of the sensors between the two systems) ensure that even if the hardware wiring is incorrect, the air conditioner can continue to operate basically based on the correct temperature data. At the same time, a prompt message is issued so that maintenance personnel can correct the hardware failure in time, which significantly improves the safety and stability of the operation of the dual-system air conditioner.

[0083] According to one embodiment of the present invention, after the step of determining that the temperature sensors of the dual-system air conditioner are connected in reverse, the method further includes:

[0084] Assigning the detection value of the temperature sensor of the target air-conditioning system to the other air-conditioning system of the dual-system air-conditioner, and assigning the detection value of the temperature sensor of the other air-conditioning system to the target air-conditioning system;

[0085] A prompt message is issued indicating that the temperature sensor is connected incorrectly.

[0086] In this embodiment of the present invention, after determining that the temperature sensor is connected reversely, the following countermeasures are taken:

[0087] 1. The temperature data actually monitored by the target air conditioning system's temperature sensor is assigned to the other air conditioning system in the dual-system air conditioner as the reference temperature for that system. Simultaneously, the temperature data detected by the other air conditioning system's temperature sensor is assigned to the target air conditioning system for use.

[0088] 2. After completing the above data exchange, although the temperature sensor is still connected incorrectly in hardware, through data processing and logic adjustment at the software level, both air conditioning systems can obtain correct temperature information at the software level, thereby ensuring the normal operation of the air conditioning system as much as possible and, to a certain extent, avoiding major failures or shutdowns caused by incorrect temperature sensor connection.

[0089] 3. At the same time, a clear "temperature sensor connected in reverse" prompt message is issued to help maintenance personnel promptly discover and correct hardware wiring errors, ensuring long-term stable operating performance and accurate temperature control effects.

[0090] This design of the embodiment of the present invention not only improves the adaptability and fault tolerance of the dual-system air conditioner to the situation of misconnection of components, but also reminds relevant personnel to perform necessary maintenance and repair work without affecting the basic user experience, thereby enhancing the overall reliability of the air conditioner and user experience.

[0091] For example, Figure 3 As shown, the air conditioner receives the power-on command and determines whether the set standby time has been reached. If not, it continues to standby. If so, it records the value of the temperature sensor of the target air conditioning system as T0. After running the target air conditioning system for 3 minutes, the value of the temperature sensor of the target air conditioning system is detected as T1.

[0092] Then judge │T1-T0│>Y. If so, it is determined that the temperature sensor is connected normally; otherwise, it is determined that the temperature sensor is connected reversely. At this time, the detection value of the temperature sensor of the target air-conditioning system is assigned to the other air-conditioning system of the dual-system air conditioner, and the detection value of the temperature sensor of the other air-conditioning system is assigned to the target air-conditioning system. At the same time, a prompt message that the temperature sensor is connected reversely is issued to facilitate user maintenance. When the system is powered off for maintenance and then turned on again, the temperature sensor value is restored to the initial state, corresponding to the corresponding air-conditioning system.

[0093] According to one embodiment of the present invention, the refrigerant pipeline sensor includes a pressure sensor; and the step of determining whether the refrigerant pipeline sensor of the dual-system air conditioner is connected reversely based on a difference in a detection parameter of the refrigerant pipeline sensor comprises:

[0094] Determining that a pressure change difference of the pressure sensor of the target air conditioning system is greater than a second set value, and determining that the pressure sensors of the dual-system air conditioners are properly connected;

[0095] It is determined that the pressure change difference of the pressure sensor of the target air-conditioning system is less than or equal to the second set value, and it is determined that the pressure sensors of the dual-system air conditioner are connected reversely.

[0096] In another embodiment of the present invention, for the pressure sensor in the refrigerant pipeline sensor, the method of detecting the difference in parameter changes is also used to determine whether it is correctly installed or connected incorrectly.

[0097] The specific steps are as follows:

[0098] 1. Before and after the target air conditioning system runs for a first set time, obtain the pressure data detected by the pressure sensor and calculate the pressure change difference during this time period.

[0099] 2. When it is determined that the pressure change difference of the pressure sensor of the target air-conditioning system is greater than a pre-set second set value, it indicates that the pressure sensor can normally sense the pressure changes corresponding to the refrigerant in different stages (such as compression, condensation, throttling, and evaporation) during the refrigeration cycle. Therefore, it can be determined that the connection between the pressure sensor and the corresponding air-conditioning system is normal.

[0100] 3. Conversely, if the pressure change difference of the target air conditioning system's pressure sensor is less than or equal to the preset second set value, it indicates that the pressure sensor is connected incorrectly. Under normal operating conditions, the pressure sensor should exhibit significant pressure increases and decreases as the refrigerant circulates within the system. Reverse connection will prevent the pressure sensor from accurately sensing pressure changes at the corresponding location, thus failing to provide pressure data that reflects the air conditioning system's true operating status.

[0101] The automatic detection method provided by the embodiment of the present invention can quickly identify installation errors of the pressure sensor during the startup phase, and through subsequent logical processing (such as exchanging the readings of the sensors between the two systems) ensure that even if the hardware wiring is incorrect, the air conditioner can continue to operate basically based on the correct pressure data. At the same time, a prompt message is issued so that maintenance personnel can correct the hardware failure in time, which significantly improves the safety and stability of the operation of the dual-system air conditioner.

[0102] According to one embodiment of the present invention, after the step of determining that the pressure sensors of the dual-system air conditioner are connected in reverse, the method further includes:

[0103] Assigning the detection value of the pressure sensor of the target air-conditioning system to the other air-conditioning system of the dual-system air-conditioner, and assigning the detection value of the pressure sensor of the other air-conditioning system to the target air-conditioning system;

[0104] A prompt message is issued indicating that the pressure sensor is connected reversely.

[0105] In this embodiment provided by the present invention, the determination and handling measures for misconnection of the pressure sensor are specifically as follows:

[0106] 1. Determine whether the target air conditioning system's pressure sensor is correctly connected by monitoring the pressure change difference. If the pressure change difference is less than or equal to a preset second set value, the pressure sensor is determined to be connected incorrectly.

[0107] 2. After confirming that the pressure sensor is connected incorrectly, adopt a similar response strategy as when the temperature sensor is connected incorrectly:

[0108] Assigning the pressure data actually detected by the pressure sensor of the current target air-conditioning system to the other air-conditioning system in the dual-system air-conditioner as the reference pressure of the other air-conditioning system;

[0109] At the same time, the pressure data detected by the pressure sensor of another air-conditioning system is assigned to the target air-conditioning system for use.

[0110] 3. Through this software-level data exchange method, even if the pressure sensor wiring on the hardware is incorrect, the two air conditioning systems can execute the corresponding control logic based on the correct pressure information, thereby ensuring the normal operation of the air conditioning system as much as possible, or at least avoiding serious failures or downtime caused by misconnection of the pressure sensor.

[0111] 4. In addition, a clear "pressure sensor connected in reverse" prompt message is issued to help maintenance personnel promptly discover and repair hardware wiring errors, ensuring long-term stable operation of the air conditioner and accurate pressure control performance.

[0112] Therefore, the embodiment of the present invention, through intelligent detection and adaptive adjustment mechanism, can achieve soft compatibility with the air-conditioning system after identifying the problem of reverse connection of refrigerant pipeline sensors (such as temperature sensors and pressure sensors), ensuring the basic operation of the equipment while effectively improving the overall reliability and maintenance efficiency of the dual-system air conditioner, and helping to reduce the potential failure risks caused by incorrect connection of components.

[0113] For example, Figure 4 As shown, the air conditioner receives the power-on command and determines whether the set standby time has been reached. If not, it continues to standby. If so, it records the value of the pressure sensor of the target air conditioning system as P0. After running the target air conditioning system for 3 minutes, the value of the pressure sensor of the target air conditioning system is detected as P1.

[0114] Then judge │P1-P0│>X. If so, it is determined that the pressure sensor is connected normally; otherwise, it is determined that the pressure sensor is connected reversely. At this time, the detection value of the pressure sensor of the target air-conditioning system is assigned to the other air-conditioning system of the dual-system air conditioner, and the detection value of the pressure sensor of the other air-conditioning system is assigned to the target air-conditioning system. At the same time, a prompt message that the pressure sensor is connected reversely is issued to facilitate the user to perform maintenance. When the system is powered off for maintenance and then turned on again, the pressure sensor value is restored to the initial state, corresponding to the corresponding air-conditioning system.

[0115] According to one embodiment of the present invention, the dual-system air conditioner component further includes a compressor; and the detection method further includes:

[0116] In response to the power-on instruction, determining one of the air-conditioning systems of the dual-system air-conditioner as a target air-conditioning system and starting the operation;

[0117] Obtaining a current change difference of the compressor of the target air-conditioning system before and after the second set time period, and a current change difference of the compressor of the other air-conditioning system of the dual-system air-conditioner before and after the second set time period;

[0118] Whether the compressor wiring of the dual-system air conditioner is incorrectly connected is determined based on the current change difference of the compressor of the target air-conditioning system before and after the second set time period and the current change difference of the compressor of the other air-conditioning system of the dual-system air conditioner before and after the second set time period.

[0119] Specifically, after the power-on command, one of the air-conditioning systems in the dual-system air conditioner is first selected and started as the target air-conditioning system; before and after the target air-conditioning system runs for a second set time, the current change difference of the compressor in the system is obtained, and at the same time, the current change difference of the compressor of the other air-conditioning system in the same time period is recorded. The current change difference reflects the current fluctuation caused by load changes in the compressor under normal working conditions; based on the current change difference of the compressors of the two air-conditioning systems, it is analyzed to determine whether the compressor wiring is normal.

[0120] This method, used in embodiments of the present invention, effectively detects whether a compressor is correctly connected to the corresponding air conditioning system. This allows for timely detection and avoidance of issues such as reduced air conditioning performance, increased energy consumption, and even equipment damage caused by incorrect compressor wiring. This provides a more comprehensive means of detecting component misconnections in dual-system air conditioners, helping to improve the overall reliability and operational efficiency of air conditioning equipment.

[0121] According to one embodiment of the present invention, the step of determining whether the compressor wiring of the dual-system air conditioner is incorrectly connected based on a difference in current change of the compressor of the target air conditioning system before and after the second set time period and a difference in current change of the compressor of the other air conditioning system of the dual-system air conditioner before and after the second set time period includes:

[0122] If the difference in current change of the compressor of the target air-conditioning system before and after the second set time is greater than the third set value, and the difference in current change of the compressor of the other air-conditioning system of the dual-system air-conditioning system before and after the second set time is less than the fourth set value, it is determined that the wiring of the compressor of the dual-system air-conditioning system is normal;

[0123] If the difference in current change of the compressor of the target air-conditioning system before and after the second set time is less than or equal to the third set value, or the difference in current change of the compressor of the other air-conditioning system of the dual-system air-conditioner before and after the second set time is greater than or equal to the fourth set value, it is determined that the compressor wiring of the dual-system air-conditioner is misconnected.

[0124] In this embodiment of the present invention, the process of determining whether the compressor wiring is incorrectly connected is more detailed:

[0125] 1. Before and after the target air conditioning system operates for a second set time, obtain and compare the compressor current change differences of the two air conditioning systems.

[0126] 2. The specific determination is as follows:

[0127] If the difference in compressor current change during the operation of the target air-conditioning system is greater than the preset third set value, and the difference in compressor current change during the same time period of the other air-conditioning system is less than the preset fourth set value, it indicates that the current changes of the two are consistent with the expected differences under normal working conditions. Therefore, it can be determined that the compressor wiring of the dual-system air conditioner is normal.

[0128] On the contrary, if the compressor current change difference of the target air-conditioning system is less than or equal to the third set value, or the compressor current change difference of another air-conditioning system is greater than or equal to the fourth set value, this means that there is an abnormality in the compressor's workload, efficiency or circuit connection. Based on this phenomenon, it can be preliminarily determined that the compressor wiring is misconnected.

[0129] Therefore, through the quantitative analysis of the compressor current changes, the problem of compressor wiring misconnection in the dual-system air conditioner is effectively detected, which further improves the safety and reliability of the air conditioner and helps to reduce maintenance costs and failure risks.

[0130] According to one embodiment of the present invention, after the step of determining whether the compressor of the dual-system air conditioner is misconnected, the method further includes:

[0131] Control the compressor shutdown of dual-system air conditioners;

[0132] A prompt message is issued indicating that the compressor wiring is incorrectly connected.

[0133] In this embodiment of the present invention, when it is determined that there is a wiring error in the compressor, the following safety protection and prompt measures are taken:

[0134] 1. Shutdown the compressors of dual-system air conditioners: To prevent abnormal current flow, overload, or other potential safety hazards caused by wiring errors, this system immediately shuts down the compressors of the target air conditioning system and any other potentially affected air conditioning system. By cutting power or sending a shutdown command to the compressors, the system prevents them from continuing to operate under incorrect circuit conditions, thus preventing equipment damage and safety incidents.

[0135] 2. Message indicating incorrect compressor wiring: At the same time, a clear "compressor wiring error" message will be sent to the user or maintenance personnel. This can be displayed on a visual display, sound an alarm, or be pushed to relevant personnel via remote communication methods such as a mobile phone app. This message is intended to quickly inform the user of the current problem so that a professional technician can promptly inspect the air conditioner, correct the compressor wiring error, and restore normal operation of the air conditioner.

[0136] Through the above steps, the present invention effectively solves the problem of incorrect connection of compressor wiring in a dual-system air conditioner, which not only enhances the safety and reliability of the air conditioner, but also improves the convenience and efficiency of equipment maintenance.

[0137] For example, Figure 5 As shown, the air conditioner receives a power-on command and determines whether the set standby time has been reached. If not, it continues to standby. If so, it records the compressor current value of the target air conditioning system as Ia0 and the compressor current value of the other air conditioning system as Ib0. After running the target air conditioning system for 1 minute, it detects the compressor current value of the target air conditioning system as Ia1 and the compressor current value of the other air conditioning system as Ib1.

[0138] Then, it is determined that │Ia1-Ia0│>0.5 and │Ib1-Ib0│<0.5, that is, the current change of the compressor of the target air-conditioning system is detected to determine whether the corresponding compressor is turned on, and the current change of the compressor of the other air-conditioning system is detected to determine whether the corresponding compressor is turned on; if so, it indicates that the compressor of the target air-conditioning system is turned on and the compressor of the other air-conditioning system is not turned on, and the compressor wiring is determined to be normal; otherwise, it is determined that the compressor wiring is incorrect. At this time, the compressor of the dual-system air conditioner is controlled to stop, all loads are turned off, and a prompt message of incorrect compressor wiring is issued to facilitate maintenance by the user. When the system is powered off for maintenance and then powered on again, the fault is eliminated.

[0139] According to one embodiment of the present invention, the dual-system air conditioner component further includes a pressure switch; and the detection method further includes:

[0140] During the operation of the dual-system air conditioner, determining one of the air conditioning systems of the dual-system air conditioner as a target air conditioning system;

[0141] If the pressure switch of the target air-conditioning system triggers the pressure protection, the compressor of the target air-conditioning system is controlled to stop;

[0142] After the compressor of the target air-conditioning system stops, obtain the duration of the pressure switch of the target air-conditioning system triggering the pressure protection;

[0143] Based on the duration of the pressure protection triggered by the pressure switch of the target air-conditioning system, it is determined whether the pressure switches of the dual-system air conditioner are connected incorrectly.

[0144] In this embodiment of the present invention, the detection and judgment process for the pressure switch is as follows:

[0145] 1. During the operation of the dual-system air conditioner, first select one air conditioning system as the target air conditioning system for monitoring.

[0146] 2. When the pressure switch of the target air-conditioning system triggers the pressure protection mechanism (i.e. the internal pressure of the air-conditioning system exceeds or falls below the preset safety range), the compressor of the air-conditioning system is controlled to stop working. This is to prevent equipment damage or safety hazards caused by abnormal pressure.

[0147] 3. After the compressor stops, start recording the duration from when the pressure switch triggers the pressure protection to the current moment.

[0148] 4. Make a judgment based on the duration of the pressure switch triggering the pressure protection.

[0149] 5. This detection method can effectively identify whether the pressure switch is correctly connected to the air conditioning system, thereby avoiding misoperation caused by reverse connection of the pressure switch, frequent start and stop of the equipment, or long-term abnormal working state, and further improving the working stability and life of the dual-system air conditioner.

[0150] Therefore, the present invention not only focuses on the detection of temperature sensor, pressure sensor and compressor wiring, but also covers the judgment of whether the pressure switch wiring is correct, forming a comprehensive and detailed component misconnection detection scheme, which effectively improves the overall operating performance and safety of the air conditioner.

[0151] According to one embodiment of the present invention, the step of determining whether the pressure switches of the dual-system air conditioner are connected reversely based on the duration of the pressure protection triggered by the pressure switch of the target air conditioning system includes:

[0152] If the duration of the pressure protection triggered by the pressure switch of the target air-conditioning system is less than the fifth set value, it is determined that the pressure switch connection of the dual-system air-conditioning system is normal;

[0153] If the duration of the pressure protection triggered by the pressure switch of the target air-conditioning system is greater than or equal to the fifth set value, it is determined that the pressure switches of the dual-system air conditioner are connected reversely.

[0154] In this embodiment of the present invention, the detection logic of the pressure switch is as follows:

[0155] 1. When the pressure switch of the target air conditioning system triggers the pressure protection, start recording the duration of the pressure protection.

[0156] 2. The determination process is based on the preset fifth setting value:

[0157] If the duration of the target air conditioning system's pressure switch triggering pressure protection is less than a predetermined fifth set value (a reasonable threshold value based on the time required for the air conditioning system's pressure to return to a safe range under normal circumstances), the pressure switch can be considered to be operating normally because it can release the pressure protection state within a reasonable time, indicating that its connection to the corresponding air conditioning system and its function meet the expected design.

[0158] On the contrary, if the duration of the pressure protection triggered by the pressure switch of the target air-conditioning system is greater than or equal to the fifth set value, and the pressure switch fails to release the protection state even after a sufficiently long time has passed, it is determined that the pressure switch is connected in reverse.

[0159] Through this method, the present invention can effectively identify whether the pressure switch is correctly installed and performing its pressure protection function, thereby promptly identifying and addressing potential safety hazards, ensuring the long-term stable and efficient operation of the dual-system air conditioner, and reducing the risk of equipment failure due to misconnected components. Furthermore, this automated detection mechanism simplifies maintenance processes and improves equipment management efficiency.

[0160] According to one embodiment of the present invention, after the step of determining that the pressure switches of the dual-system air conditioner are connected in reverse, the method further includes:

[0161] Controlling the compressor of the other air-conditioning system of the dual-system air-conditioner to stop, and swapping the association relationship of the pressure switches of the dual-system air-conditioner;

[0162] A warning message is issued indicating that the pressure switch is connected reversely.

[0163] Specifically, after confirming that the pressure switch of the target air conditioning system is reversed, the compressor of the other air conditioning system in the dual-system air conditioner is shut down to prevent the erroneous signal from affecting the normal operation of the other air conditioning system. This is to ensure that the entire air conditioning system is in a safe and stable state until the reverse pressure switch connection issue is resolved, thereby avoiding potential equipment damage or safety hazards caused by the failure of pressure protection.

[0164] If a pressure switch is found to be connected in reverse, the connection between it and the corresponding air-conditioning system will be reconfigured, that is, the originally reversed pressure switch will be swapped with the correct position, thereby restoring the normal function of the pressure switch, enabling it to accurately sense and feedback the pressure status inside the air-conditioning system.

[0165] At the same time, an alarm prompt of "pressure switch is connected in reverse" is issued to the user or maintenance personnel so that relevant personnel can promptly understand the current problem and take appropriate maintenance measures to correct the wiring error of the pressure switch.

[0166] Through the above steps, the present invention not only realizes the intelligent identification and judgment of the misconnection of components of the dual-system air conditioner, but also can automatically take temporary safety protection measures and provide clear fault indications, which helps to quickly locate and repair problems, and effectively ensure the safety and reliability of the air conditioner.

[0167] For example, Figure 6 As shown, the air conditioner is running normally, and it is determined whether the pressure switch of the target air conditioning system triggers the pressure protection. If not, the air conditioner continues to run. If so, the target air conditioning system high pressure protection is displayed, and the target air conditioning system compressor is stopped;

[0168] The system then determines whether the target air conditioning system's pressure switch triggers pressure protection for less than Z seconds. If so, the pressure switch is considered properly connected. Otherwise, the pressure protection is continuously triggered, indicating a reversed pressure switch connection. The compressor of the other air conditioning system is shut down, shutting down all loads. The pressure switches of the two air conditioning systems are then swapped, and a warning message indicating reversed pressure switch connection is issued. When the system is powered on again after maintenance, the pressure switches are restored to their original associations, corresponding to the corresponding air conditioning system.

[0169] The following describes a detection device for misconnection of components of a dual-system air conditioner provided by the present invention. The detection device for misconnection of components of a dual-system air conditioner described below and the detection method for misconnection of components of a dual-system air conditioner described above can be referenced to each other.

[0170] According to one embodiment of the present invention, referring to Figure 7As shown, the present invention also provides a device for detecting misconnected components in a dual-system air conditioner, wherein the dual-system air conditioner component includes a refrigerant pipeline sensor. The detection device includes a determination module 701, an acquisition module 702, and a judgment module 703. Determination module 701 is configured to, in response to a power-on command, determine that one of the air conditioning systems in the dual-system air conditioner is the target air conditioning system and start operation; acquisition module 702 is configured to obtain a difference in detection parameter changes of the refrigerant pipeline sensor before and after the target air conditioning system has been operating for a first set period of time; and judgment module 703 is configured to determine whether the refrigerant pipeline sensor in the dual-system air conditioner is connected incorrectly based on the difference in detection parameter changes of the refrigerant pipeline sensor.

[0171] The refrigerant pipeline sensors include a temperature sensor 107, a pressure sensor 108, etc., and the dual-system air conditioner components also include a compressor 102, a pressure switch 109, etc. The specific control process is described above and will not be repeated here.

[0172] The device for detecting misconnection of components of a dual-system air conditioner provided in an embodiment of the present invention avoids abnormal operation of the air conditioner due to human assembly errors through an intelligent detection and correction mechanism at the software level. It not only enhances the stability and reliability of the operation of the dual-system air conditioner, but also helps to simplify the production and assembly process, reduce the types of components, promote the standardized design of components, and reduce production and maintenance costs.

[0173] According to one embodiment of the present invention, the present invention also provides an air conditioner, including a memory, a processor, and a computer program stored in the memory and executable on the processor. When the processor executes the program, the above-mentioned method for detecting misconnection of components of a dual-system air conditioner is implemented.

[0174] The air conditioner provided by the embodiment of the present invention avoids abnormal operation of the air conditioner due to human assembly errors through an intelligent detection and correction mechanism at the software level. It not only enhances the stability and reliability of the operation of the dual-system air conditioner, but also helps to simplify the production and assembly process, reduce the types of parts, and promote the standardized design of parts, thereby reducing production and maintenance costs.

[0175] 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 various embodiments of the present invention.

Claims

1. A method for detecting misconnection of components in a dual-system air conditioner, characterized in that: The dual-system air conditioner components include a refrigerant pipeline sensor; the detection method includes: In response to the power-on instruction, determining one of the air-conditioning systems of the dual-system air-conditioner as a target air-conditioning system and starting the operation; Obtaining a difference in a detection parameter change of a refrigerant pipeline sensor before and after the target air-conditioning system operates for a first set time; According to the difference in the change of the detection parameters of the refrigerant pipeline sensor, it is determined whether the refrigerant pipeline sensor of the dual-system air conditioner is connected reversely.

2. The method for detecting misconnection of components of a dual-system air conditioner according to claim 1, characterized in that: The refrigerant pipeline sensor includes a temperature sensor; and the step of determining whether the refrigerant pipeline sensor of the dual-system air conditioner is connected reversely based on a difference in a detection parameter of the refrigerant pipeline sensor comprises: Determining that a temperature change difference of the temperature sensor of the target air-conditioning system is greater than a first set value, and determining that the temperature sensors of the dual-system air-conditioning system are properly connected; It is determined that the temperature change difference of the temperature sensors of the target air-conditioning system is less than or equal to a first set value, and it is determined that the temperature sensors of the dual-system air-conditioner are connected reversely.

3. The method for detecting misconnection of components of a dual-system air conditioner according to claim 2, characterized in that: After determining that the temperature sensors of the dual-system air conditioner are connected in reverse, the method further includes: Assigning the detection value of the temperature sensor of the target air-conditioning system to the other air-conditioning system of the dual-system air-conditioner, and assigning the detection value of the temperature sensor of the other air-conditioning system to the target air-conditioning system; A prompt message is issued indicating that the temperature sensor is connected incorrectly.

4. The method for detecting misconnection of components of a dual-system air conditioner according to claim 1, characterized in that: The refrigerant pipeline sensor includes a pressure sensor; and the step of determining whether the refrigerant pipeline sensor of the dual-system air conditioner is connected reversely based on a difference in a detection parameter of the refrigerant pipeline sensor comprises: Determining that a pressure change difference of the pressure sensor of the target air conditioning system is greater than a second set value, and determining that the pressure sensors of the dual-system air conditioner are properly connected; It is determined that the pressure change difference of the pressure sensor of the target air-conditioning system is less than or equal to a second set value, and it is determined that the pressure sensors of the dual-system air-conditioner are connected reversely.

5. The method for detecting misconnection of components of a dual-system air conditioner according to claim 4, characterized in that: After the step of determining that the pressure sensors of the dual-system air conditioner are connected in reverse, the method further includes: Assigning the detection value of the pressure sensor of the target air-conditioning system to the other air-conditioning system of the dual-system air-conditioner, and assigning the detection value of the pressure sensor of the other air-conditioning system to the target air-conditioning system; A prompt message is issued indicating that the pressure sensor is connected reversely.

6. The method for detecting misconnection of components of a dual-system air conditioner according to claim 1, characterized in that: The dual-system air conditioner components further include a compressor; the detection method further includes: In response to the power-on instruction, determining one of the air-conditioning systems of the dual-system air-conditioner as a target air-conditioning system and starting the operation; Obtaining a current change difference of the compressor of the target air-conditioning system before and after the second set time period, and a current change difference of the compressor of the other air-conditioning system of the dual-system air-conditioner before and after the second set time period; Based on the difference in current change of the compressor of the target air-conditioning system before and after the second set time period and the difference in current change of the compressor of the other air-conditioning system of the dual-system air-conditioner before and after the second set time period, it is determined whether the compressor wiring of the dual-system air-conditioner is wrongly connected.

7. The method for detecting misconnection of components of a dual-system air conditioner according to claim 6, characterized in that: The step of determining whether the compressor of the dual-system air conditioner is incorrectly connected based on a difference in current change of the compressor of the target air-conditioning system before and after the second set time period and a difference in current change of the compressor of the other air-conditioning system of the dual-system air conditioner before and after the second set time period comprises: If the difference in current change of the compressor of the target air-conditioning system before and after the second set time is greater than a third set value, and the difference in current change of the compressor of the other air-conditioning system of the dual-system air-conditioning system before and after the second set time is less than a fourth set value, it is determined that the wiring of the compressor of the dual-system air-conditioning system is normal; If the difference in current change of the compressor of the target air-conditioning system before and after the second set time is less than or equal to the third set value, or the difference in current change of the compressor of the other air-conditioning system of the dual-system air-conditioner before and after the second set time is greater than or equal to the fourth set value, it is determined that the compressor wiring of the dual-system air-conditioner is misconnected.

8. The method for detecting misconnection of components of a dual-system air conditioner according to claim 7, characterized in that: After determining that the compressor of the dual-system air conditioner is misconnected, the method further includes: Controlling the compressor of the dual-system air conditioner to stop; A prompt message is issued indicating that the compressor wiring is incorrectly connected.

9. The method for detecting misconnection of components of a dual-system air conditioner according to any one of claims 1 to 8, characterized in that: The dual-system air conditioner components further include a pressure switch; and the detection method further includes: During the operation of the dual-system air conditioner, determining one of the air conditioning systems of the dual-system air conditioner as a target air conditioning system; If the pressure switch of the target air-conditioning system triggers the pressure protection, controlling the compressor of the target air-conditioning system to stop; After the compressor of the target air-conditioning system stops, obtaining a duration of a pressure switch of the target air-conditioning system triggering pressure protection; According to the duration of the pressure protection triggered by the pressure switch of the target air-conditioning system, it is determined whether the pressure switches of the dual-system air conditioner are connected reversely.

10. The method for detecting misconnection of components of a dual-system air conditioner according to claim 9, characterized in that: The step of determining whether the pressure switches of the dual-system air conditioner are connected reversely according to the duration of the pressure protection triggered by the pressure switch of the target air-conditioning system comprises: If the duration of the pressure protection triggered by the pressure switch of the target air-conditioning system is less than a fifth set value, it is determined that the pressure switch of the dual-system air-conditioning system is connected normally; If the duration of the pressure protection triggered by the pressure switch of the target air-conditioning system is greater than or equal to a fifth set value, it is determined that the pressure switches of the dual-system air-conditioner are connected reversely.

11. The method for detecting misconnection of components of a dual-system air conditioner according to claim 10, characterized in that: After determining that the pressure switches of the dual-system air conditioner are connected in reverse, the method further includes: Controlling the compressor of the other air-conditioning system of the dual-system air-conditioner to stop, and swapping the association relationship of the pressure switches of the dual-system air-conditioner; A warning message is issued indicating that the pressure switch is connected reversely.

12. A device for detecting misconnection of components of a dual-system air conditioner, characterized in that: The dual-system air conditioner components include a refrigerant pipeline sensor; The detection device comprises: a determination module, configured to, in response to a power-on instruction, determine one of the air-conditioning systems of the dual-system air-conditioner as a target air-conditioning system and start the operation thereof; an acquisition module, configured to acquire a difference in a detection parameter change of a refrigerant pipeline sensor before and after the target air-conditioning system runs for a first set time; The determination module is used to determine whether the refrigerant pipeline sensor of the dual-system air conditioner is connected reversely according to the difference in detection parameter changes of the refrigerant pipeline sensor.

13. An air conditioner comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein: When the processor executes the program, the method for detecting misconnection of components of a dual-system air conditioner according to any one of claims 1 to 11 is implemented.

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