Multi-split air conditioner detection system and method and multi-split air conditioner

Abstract

The invention discloses a multi-split air conditioner detection system and method and a multi-split air conditioner, and belongs to the technical field of air conditioners. The multi-split air conditioner comprises an outdoor unit, the outdoor unit comprises a plurality of refrigeration branches, each refrigeration branch is provided with a control port, the detection system comprises an outdoor unit controller, the outdoor unit controller comprises a first control unit, the first control unit is provided with a plurality of communication ports, and each communication port is used for being connected with one control port; the upper computer is used for sending a first temperature control instruction to the outdoor unit controller, and the first control unit is used for sending the first temperature control instruction to the communication port matched with the first identifier, so that the corresponding refrigeration branch executes a temperature control action; and the upper computer is used for obtaining a sub-detection result of the refrigeration branch matched with the first identifier based on the air pipe temperature and the liquid pipe temperature of the refrigeration branch matched with the first identifier and the air pipe temperature of the refrigeration branch matched with other identifiers, and obtaining a first detection result of the outdoor unit based on the sub-detection result of each refrigeration branch.

Description

Technical Field

[0001] The present application belongs to the technical field of air conditioning, and in particular relates to a detection system and method for a one-to-many air conditioner and a one-to-many air conditioner. Background Art

[0002] The outdoor unit of a one-to-many air conditioner usually includes a two- to five-way electrical control system and piping system. Compared with a one-to-one air conditioner, it is more prone to assembly errors. To ensure the subsequent normal operation of the one-to-many air conditioner, it is necessary to accurately detect the correctness of the assembly of the outdoor unit in the one-to-many air conditioner. The current outdoor unit detection method is not comprehensive enough, which makes some assembly errors cannot be detected. Summary of the Invention

[0003] The present application aims to solve at least one of the technical problems existing in the prior art. To this end, the present application proposes a detection system and method for a one-to-many air conditioner, and a one-to-many air conditioner, which can detect assembly errors in the refrigeration branch itself and assembly errors between refrigeration branches, thereby achieving more comprehensive detection of the outdoor unit.

[0004] In a first aspect, the present application provides a detection system for a one-to-many air conditioner, wherein the one-to-many air conditioner includes an outdoor unit, the outdoor unit includes multiple refrigeration branches, each of the refrigeration branches has a control port, and the detection system includes:

[0005] The outdoor unit controller comprises a first control unit having a plurality of communication ports, each of the communication ports being used to connect to one of the control ports;

[0006] a host computer, configured to send a first temperature control instruction to the outdoor unit controller, wherein the first temperature control instruction carries a first identifier, and the first control unit is configured to send the first temperature control instruction to the communication port matching the first identifier, so that the control port connected to the communication port matching the first identifier controls the corresponding cooling branch to perform a temperature control action;

[0007] The host computer is used to obtain the sub-detection result of the refrigeration branch matching the first identifier based on the gas pipe temperature and liquid pipe temperature of the refrigeration branch matching the first identifier and the gas pipe temperature of the refrigeration branch matching other identifiers, and obtain the first detection result of the outdoor unit based on the sub-detection result of each refrigeration branch, and the sub-detection result is used to characterize whether the refrigeration branch is assembled correctly.

[0008] According to the detection system of the one-to-many air conditioner of the present application, a temperature control instruction is sent to a certain control port in the outdoor unit, and the temperature control instruction is transmitted to the corresponding refrigeration branch via the communication line, so that the refrigeration branch performs the temperature control action, and the refrigeration system where the refrigeration branch is located realizes the refrigeration cycle. By analyzing the gas pipe temperature and liquid pipe temperature of the refrigeration branch that matches the identification of the control port, it is possible to detect the assembly error of the refrigeration branch itself, and by analyzing the gas pipe temperature of the refrigeration branch that matches other identifications, it is possible to detect the assembly error between the refrigeration branches at the same time, thereby realizing a more comprehensive detection of the outdoor unit, so that the outdoor unit can operate more stably and reliably after the assembly error is corrected.

[0009] According to one embodiment of the present application, the host computer is used to compare the gas pipe temperature of the refrigeration branch matching the first identifier with the gas pipe temperature of the refrigeration branch matching other identifiers to obtain a first comparison result, compare the gas pipe temperature of the refrigeration branch matching the first identifier with the liquid pipe temperature to obtain a second comparison result, and based on the first comparison result and / or the second comparison result, obtain the sub-detection result of the refrigeration branch matching the first identifier.

[0010] According to one embodiment of the present application, the host computer is configured to determine that the refrigeration branch matching the first identifier is correctly assembled when the first comparison result satisfies a first condition and the second comparison result satisfies a second condition;

[0011] The host computer is configured to determine that the refrigeration branch matching the first identifier is abnormally assembled when the first comparison result does not satisfy the first condition or the second comparison result does not satisfy the second condition;

[0012] The first condition is that the gas pipe temperature of the refrigeration branch matching the first identifier is greater than the gas pipe temperature of the refrigeration branch matching other identifiers, and the second condition is that the difference between the gas pipe temperature and the liquid pipe temperature of the refrigeration branch matching the first identifier is greater than the first difference threshold.

[0013] According to one embodiment of the present application, when it is determined that the refrigeration branch matching the first identifier is assembled abnormally, the host computer is used to determine that the refrigeration branch matching the first identifier has a communication assembly abnormality when the gas pipe temperature of the refrigeration branch matching the first identifier is lower than the gas pipe temperature of any of the refrigeration branches matching other identifiers, and the difference between the gas pipe temperature and the liquid pipe temperature of the refrigeration branch matching the first identifier is lower than the first difference threshold.

[0014] According to one embodiment of the present application, the communication assembly abnormality includes incorrect connection of the communication line and abnormal communication control of the temperature control component.

[0015] According to one embodiment of the present application, when it is determined that the refrigeration branch matching the first identifier is assembled abnormally, the host computer is used to determine that the temperature sensor of the refrigeration branch matching the first identifier is assembled incorrectly when the difference between the liquid pipe temperature and the gas pipe temperature of the refrigeration branch matching the first identifier is greater than the first difference threshold.

[0016] According to one embodiment of the present application, the host computer is also used to send a second temperature control instruction to the outdoor unit controller after obtaining the first detection result, and the first control unit is used to control the multiple refrigeration branches to perform temperature control actions based on the second temperature control instruction. The host computer is used to obtain the second detection result of the outdoor unit based on the temperature of the exhaust pipe of the outdoor unit, the temperature of the external coil, the temperature of the defrost device and the temperature of the intake pipe.

[0017] In a second aspect, the present application provides a method for detecting a one-to-many air conditioner system based on the first aspect, the method being applied to a host computer and comprising:

[0018] Sending a first temperature control instruction to the outdoor unit controller, the first temperature control instruction carrying a first identifier, the first control unit sending the first temperature control instruction to the communication port matching the first identifier, so that the control port connected to the communication port matching the first identifier controls the corresponding cooling branch to perform a temperature control action;

[0019] Obtaining a sub-detection result of the refrigeration branch matching the first identifier based on the gas pipe temperature and the liquid pipe temperature of the refrigeration branch matching the first identifier and the gas pipe temperature of the refrigeration branch matching other identifiers;

[0020] A first detection result of the outdoor unit is obtained based on the sub-detection result of each of the refrigeration branches.

[0021] According to the method of the detection system of the one-to-many air conditioners based on the first aspect described above in the present application, a temperature control instruction is sent to a control port in the outdoor unit, and the temperature control instruction is transmitted to the corresponding refrigeration branch via the communication line, so that the refrigeration branch performs the temperature control action, and the refrigeration system where the refrigeration branch is located realizes the refrigeration cycle. By analyzing the gas pipe temperature and liquid pipe temperature of the refrigeration branch that matches the identification of the control port, it is possible to detect the assembly error of the refrigeration branch itself, and by analyzing the gas pipe temperature of the refrigeration branch that matches other identifications, it is possible to detect the assembly error between the refrigeration branches at the same time, thereby realizing a more comprehensive detection of the outdoor unit, so that the outdoor unit can operate more stably and reliably after the assembly error is corrected.

[0022] In a third aspect, the present application provides a one-to-many air conditioner, the one-to-many air conditioner comprising:

[0023] An outdoor unit, the outdoor unit comprising a plurality of refrigeration branches, each of the refrigeration branches having a control port, each of the control ports being configured to connect to a communication port of a controller of the outdoor unit;

[0024] The outdoor unit is used to be detected by the detection system of the one-to-many air conditioner described in the first aspect above.

[0025] According to the one-to-many air conditioner of the present application, a temperature control instruction is sent to a certain control port in the outdoor unit, and the temperature control instruction is transmitted to the corresponding refrigeration branch via the communication line, so that the refrigeration branch performs the temperature control action, and the refrigeration system where the refrigeration branch is located realizes the refrigeration cycle. By analyzing the gas pipe temperature and liquid pipe temperature of the refrigeration branch that matches the identification of the control port, it is possible to detect the assembly error of the refrigeration branch itself, and by analyzing the gas pipe temperature of the refrigeration branch that matches other identifications, it is possible to detect the assembly error between the refrigeration branches at the same time, thereby realizing a more comprehensive detection of the outdoor unit, so that the outdoor unit can operate more stably and reliably after the assembly error is corrected.

[0026] In a fourth aspect, the present application provides an electronic device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor implements the method described in the second aspect above when executing the computer program.

[0027] In a fifth aspect, the present application provides a non-transitory computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the method described in the second aspect above.

[0028] In a sixth aspect, the present application provides a computer program product, comprising a computer program, which, when executed by a processor, implements the method described in the second aspect above.

[0029] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become obvious from the description below, or will be learned through practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0031] Figure 1 This is one of the structural diagrams of the detection system for a one-to-many air conditioner provided in an embodiment of the present application;

[0032] Figure 2 This is the second structural diagram of the detection system for a one-to-many air conditioner provided in an embodiment of the present application;

[0033] Figure 3 This is one of the flow charts of the method for detecting a one-to-many air conditioner system provided in an embodiment of the present application;

[0034] Figure 4 This is the second flow chart of the method for detecting a system based on a one-to-many air conditioner provided in an embodiment of the present application;

[0035] Figure 5 It is a structural diagram of an electronic device provided in an embodiment of the present application.

[0036] Reference numerals:

[0037] Outdoor unit controller 110, first control unit 111, communication port 112, collection port 113, transmission port 114,

[0038] Host computer 120, indoor unit controller 130. DETAILED DESCRIPTION

[0039] The following will be combined with the accompanying drawings in the embodiments of the present application to clearly describe the technical solutions in the embodiments of the present application. Obviously, the embodiments described are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field are within the scope of protection of this application.

[0040] The terms "first," "second," and the like in the specification and claims of this application are used to distinguish similar objects, and are not used to describe a specific order or precedence. It should be understood that the terms used in this manner are interchangeable where appropriate, so that the embodiments of this application can be implemented in an order other than that illustrated or described herein, and that the objects distinguished by "first," "second," and the like are generally of the same type, and do not limit the number of objects; for example, the first object can be one or more. In addition, the term "and / or" in the specification and claims refers to at least one of the connected objects, and the character " / " generally indicates that the objects connected are in an "or" relationship.

[0041] Below, in combination with the accompanying drawings, the one-to-many air conditioner detection system, the one-to-many air conditioner detection system method, the one-to-many air conditioner and the electronic device provided in the embodiment of the present application are described in detail through specific embodiments and their application scenarios.

[0042] A one-to-many air conditioner includes an outdoor unit and multiple indoor units. The outdoor unit includes multiple refrigeration branches, each refrigeration branch is connected to an indoor unit, and each refrigeration branch has a control port.

[0043] The outdoor unit includes a compressor, a condenser and a four-way reversing valve, and is equipped with multiple refrigeration branches. Each branch is equipped with a temperature control component such as an electronic expansion valve and is connected to an indoor unit. The indoor unit includes an evaporator. Each refrigeration branch corresponds to an independent refrigeration system. The refrigeration system includes a compressor, a condenser, a four-way reversing valve, an electronic expansion valve in the refrigeration branch and the evaporator of the indoor unit.

[0044] In cooling mode, the four-way reversing valve allows the refrigerant to circulate from the compressor, condenser, electronic expansion valve to the evaporator, and then back to the compressor; in heating mode, the four-way reversing valve changes the flow direction of the refrigerant, allowing the refrigerant to circulate in the direction of the compressor, evaporator, electronic expansion valve to the condenser and then back to the compressor.

[0045] The refrigeration branch may include an air pipe branch and a liquid pipe branch, wherein the air pipe branch is a pipeline for transporting refrigerant in gaseous form, and the liquid pipe branch is a pipeline for transporting refrigerant in liquid form. It can be understood that the air pipe branch is the pipeline between the compressor and the evaporator, and the liquid pipe branch is the pipeline between the evaporator and the electronic expansion valve. Temperature sensors are respectively provided on the air pipe branch and the liquid pipe branch.

[0046] The refrigeration branch has a control port, through which the refrigeration branch receives control instructions and transmits the control instructions to its own temperature control device through an internal communication line to control itself to perform cooling, heating and other actions.

[0047] When the outdoor unit is assembled correctly, the indoor unit sends instructions to the control port of the refrigeration branch in the same refrigeration system when it is turned on, which can make the temperature control component in the refrigeration branch operate and realize the refrigeration cycle. However, when the outdoor unit is assembled incorrectly, the indoor unit may not be able to control the refrigeration branch in the same refrigeration system when sending instructions to the corresponding control port.

[0048] A detection system for a one-to-many air conditioner is used to detect whether the outdoor units of the one-to-many air conditioner are assembled correctly.

[0049] like Figure 1 As shown, the detection system includes an outdoor unit controller 110 and a host computer 120 .

[0050] The outdoor unit controller 110 includes a first control unit 111 . The first control unit 111 has a plurality of communication ports 112 . Each communication port 112 is used to connect to a control port. The communication port 112 matches an identifier of the control port.

[0051] It should be noted that in a one-to-many air conditioner, each refrigeration system has a unique identifier, which is used to distinguish different refrigeration systems. Accordingly, the indoor unit, refrigeration branch and the control port of the refrigeration branch in the refrigeration system also have a unique identifier. The identifiers of the indoor unit, refrigeration branch and the control port of the refrigeration branch in the same refrigeration system match each other.

[0052] For example, a one-to-many air conditioner has two refrigeration systems, namely refrigeration system a and refrigeration system b. Refrigeration system a includes indoor unit a and refrigeration branch a, and refrigeration branch a has control port a. Refrigeration system b includes indoor unit b and refrigeration branch b, and refrigeration branch b has control port b.

[0053] In this embodiment, the first control unit 111 has multiple communication ports 112, each communication port 112 has a unique identifier, and the identifier of the communication port 112 can correspond to the identifier of the refrigeration system. When testing a one-to-many air conditioner, each communication port 112 can be connected to a control port that matches its own identifier, for example, communication port a is connected to control port a, and communication port b is connected to control port b.

[0054] In this embodiment, the host computer 120 is used to send a first temperature control instruction to the outdoor unit controller 110, and the first temperature control instruction carries a first identifier. The first control unit 111 is used to send the first temperature control instruction to the communication port 112 that matches the first identifier, so that the control port connected to the communication port 112 that matches the first identifier controls the corresponding refrigeration branch to perform temperature control actions.

[0055] Among them, the first temperature control instruction is an instruction that can control the refrigeration branch to perform temperature control actions, that is, the refrigeration branch controlled by the first temperature control instruction can perform temperature control actions, and temperature control includes cooling and heating. The first identifier can be any identifier, for example, it can be identifier a or identifier b. The first temperature control instruction carries the first identifier to represent that the first control unit 111 can determine the communication port 112 that matches the first identifier according to the first temperature control instruction, and send the first temperature control instruction to the communication port 112 that matches the first identifier. After the control port matching the first identifier receives the first temperature control instruction, it transmits it to the refrigeration branch through the communication line to enable the refrigeration branch to perform temperature control actions.

[0056] In this embodiment, the upper computer 120 is used to obtain the sub-detection result of the refrigeration branch matching the first identifier based on the gas pipe temperature and liquid pipe temperature of the refrigeration branch matching the first identifier and the gas pipe temperature of the refrigeration branch matching other identifiers, and obtain the first detection result of the outdoor unit based on the sub-detection result of each refrigeration branch.

[0057] Among them, the gas pipe temperature is the temperature at the gas pipe branch, the liquid pipe temperature is the temperature at the liquid pipe branch, and the other identifiers are identifiers other than the first identifier. For example, the first identifier is a and the other identifiers are b. The sub-detection results are used to characterize whether the refrigeration branch is assembled correctly. The first detection result includes multiple sub-detection results.

[0058] In this embodiment, the gas pipe temperature and liquid pipe temperature of the refrigeration branch matching the first identifier can be calculated, and the gas pipe temperature or liquid pipe temperature of the refrigeration branch matching the first identifier can be calculated together with the gas pipe temperature of the refrigeration branch matching other identifiers. By analyzing the calculation results, sub-detection results are obtained, and the first detection result is obtained by combining multiple sub-detection results.

[0059] In the related art, the outdoor unit detection method is not comprehensive enough, so some assembly errors cannot be detected.

[0060] According to the detection system for a one-to-many air conditioner provided in the embodiment of the present application, a temperature control instruction is sent to a certain control port in the outdoor unit, and the temperature control instruction is transmitted to the corresponding refrigeration branch via the communication line, so that the refrigeration branch performs the temperature control action, and the refrigeration system where the refrigeration branch is located realizes the refrigeration cycle. By analyzing the gas pipe temperature and liquid pipe temperature of the refrigeration branch that matches the identification of the control port, it is possible to detect the assembly error of the refrigeration branch itself, and by analyzing the gas pipe temperature of the refrigeration branch that matches other identifications, it is possible to detect the assembly error between the refrigeration branches at the same time, thereby realizing a more comprehensive detection of the outdoor unit, so that the outdoor unit can operate more stably and reliably after the assembly error is corrected.

[0061] In some embodiments, the upper computer 120 is used to compare the gas pipe temperature of the refrigeration branch matching the first identifier with the gas pipe temperature of the refrigeration branch matching other identifiers to obtain a first comparison result, compare the gas pipe temperature of the refrigeration branch matching the first identifier with the liquid pipe temperature to obtain a second comparison result, and based on the first comparison result and / or the second comparison result, obtain a sub-detection result of the refrigeration branch matching the first identifier.

[0062] Among them, the first comparison result may include that the air pipe temperature of the refrigeration branch matching the first identifier is greater than the air pipe temperature of the refrigeration branch matching other identifiers, the air pipe temperature of the refrigeration branch matching the first identifier is less than the air pipe temperature of the refrigeration branch matching other identifiers, and the air pipe temperature of the refrigeration branch matching the first identifier is greater than the air pipe temperature of some refrigeration branches and less than the air pipe temperature of other refrigeration branches.

[0063] The second comparison result may include that the gas pipe temperature of the refrigeration branch matching the first identifier is greater than the liquid pipe temperature and that the gas pipe temperature of the refrigeration branch matching the first identifier is less than the liquid pipe temperature.

[0064] The first comparison result may also include the difference between the gas pipe temperature of the refrigeration branch matching the first identifier and the gas pipe temperature of the refrigeration branch matching other identifiers, and the second comparison result may also include the difference between the gas pipe temperature and the liquid pipe temperature of the refrigeration branch matching the first identifier.

[0065] In this embodiment, the sub-detection result of the refrigeration branch matching the first identifier is obtained by analyzing the first comparison result, or analyzing the second comparison result, or comprehensively analyzing the first comparison result and the second comparison result.

[0066] In some embodiments, the host computer 120 is configured to determine that the refrigeration branch matching the first identifier is correctly assembled if the first comparison result satisfies the first condition and the second comparison result satisfies the second condition;

[0067] The host computer 120 is configured to determine that the refrigeration branch matching the first identifier is abnormally assembled when the first comparison result does not satisfy the first condition or the second comparison result does not satisfy the second condition;

[0068] The first condition is that the gas pipe temperature of the refrigeration branch matching the first identifier is greater than the gas pipe temperature of the refrigeration branch matching other identifiers, and the second condition is that the difference between the gas pipe temperature and the liquid pipe temperature of the refrigeration branch matching the first identifier is greater than the first difference threshold.

[0069] Among them, the difference between the gas pipe temperature and the liquid pipe temperature of the refrigeration branch matching the first identifier is the value of the gas pipe temperature of the refrigeration branch matching the first identifier minus the liquid pipe temperature, and the first difference threshold is a preset value, which can be set to 10°C.

[0070] In this embodiment, when the gas pipe temperature of the refrigeration branch matching the first identifier is greater than the gas pipe temperature of the refrigeration branch matching other identifiers, and the difference between the gas pipe temperature and the liquid pipe temperature of the refrigeration branch matching the first identifier is greater than the first difference threshold, it indicates that the refrigeration branch matching the first identifier can normally receive the first temperature control instruction and can normally perform the temperature control action, and the corresponding temperature sensor on the refrigeration branch can normally detect the temperature, and it can be determined that the refrigeration branch matching the first identifier is assembled correctly, otherwise it is determined that the refrigeration branch matching the first identifier is assembled abnormally.

[0071] In some embodiments, when it is determined that the refrigeration branch matching the first identifier has an assembly abnormality, the upper computer 120 is used to determine that there is a communication assembly abnormality in the refrigeration branch matching the first identifier when the gas pipe temperature of the refrigeration branch matching the first identifier is lower than the gas pipe temperature of any refrigeration branch matching other identifiers, and the difference between the gas pipe temperature and the liquid pipe temperature of the refrigeration branch matching the first identifier is lower than a first difference threshold.

[0072] Among them, communication assembly abnormality indicates that the refrigeration branch cannot normally receive the corresponding temperature control instructions.

[0073] In this embodiment, the gas pipe temperature of the refrigeration branch matching the first identifier is lower than the gas pipe temperature of any refrigeration branch matching any other identifier, and the difference between the gas pipe temperature and the liquid pipe temperature of the refrigeration branch matching the first identifier is lower than the first difference threshold, indicating that the refrigeration branch matching the first identifier cannot normally receive the first temperature control instruction, so that the temperature control action cannot be performed normally, and it is determined that there is a communication assembly abnormality in the refrigeration branch matching the first identifier.

[0074] In some embodiments, the communication assembly abnormality includes a misconnection of a communication line and a communication control abnormality of a temperature control component.

[0075] The communication line misconnection may be that the communication line is misconnected to a control port with another identifier, for example, the communication line of the cooling branch a is connected to the control port b, and the communication line of the cooling branch b is connected to the control port a.

[0076] The communication control abnormality of the temperature control component may be that the temperature control component cannot be controlled by the temperature control command, or the temperature control component is connected to the temperature control components of other cooling branches in reverse.

[0077] In some embodiments, when it is determined that the refrigeration branch matching the first identifier is assembled abnormally, the upper computer 120 is used to determine that the temperature sensor of the refrigeration branch matching the first identifier is assembled incorrectly when the difference between the liquid pipe temperature and the gas pipe temperature of the refrigeration branch matching the first identifier is greater than a first difference threshold.

[0078] The difference between the liquid pipe temperature and the gas pipe temperature is the value obtained by subtracting the gas pipe temperature from the liquid pipe temperature.

[0079] In this embodiment, if the difference between the liquid pipe temperature and the gas pipe temperature of the refrigeration branch matching the first identifier is greater than the first difference threshold, it can be determined that the temperature sensor of the refrigeration branch matching the first identifier is assembled incorrectly, and the temperature sensor corresponding to the gas pipe branch and the temperature sensor corresponding to the liquid pipe branch are connected reversely.

[0080] In some embodiments, the host computer 120 is also used to send a second temperature control instruction to the outdoor unit controller 110 after obtaining the first detection result. The first control unit 111 is used to control multiple refrigeration branches to perform temperature control actions based on the second temperature control instruction. The host computer 120 is used to obtain the second detection result of the outdoor unit based on the temperature of the exhaust pipe of the outdoor unit, the temperature of the external coil, the temperature of the defrost device and the temperature of the intake pipe.

[0081] Among them, the second temperature control instruction is an instruction that can control all refrigeration branches to perform temperature control actions. When the first control unit 111 receives the second temperature control instruction, it can control all refrigeration branches to perform temperature control actions, so that the entire outdoor unit can operate.

[0082] The temperature of the exhaust pipe is the temperature of the pipe after the refrigerant in the outdoor unit is discharged from the compressor, which can reflect the working status of the compressor and the pressure of the refrigerant. The temperature of the external coil can be the temperature of the condenser, which can reflect the efficiency of the condensation process. The defrost device is used to remove frost on the outdoor unit coil. The temperature of the defrost device can reflect the efficiency and status of the defrost process. The temperature of the suction pipe is the temperature of the pipe before the refrigerant enters the compressor, which can reflect the efficiency of the evaporation process and the heat absorption of the refrigerant.

[0083] In this embodiment, after obtaining the first detection result, the operation of the entire outdoor unit can be controlled when it is determined that the outdoor unit is assembled correctly. Based on the temperature of the exhaust pipe of the outdoor unit, the temperature of the external coil, the temperature of the defrost device and the temperature of the intake pipe, the working status of the compressor and the pressure of the refrigerant, the efficiency of the condensation process, the efficiency and status of the defrost process, and the efficiency of the evaporation process and the heat absorption of the refrigerant are analyzed.

[0084] The following describes a specific embodiment of a detection system for a one-to-many air conditioner system.

[0085] In this embodiment, the detection system detects a one-to-five air conditioner.

[0086] like Figure 2 As shown, the detection system of a one-to-many air conditioner includes a host computer 120, multiple indoor unit controllers 130 and an outdoor unit controller 110. The outdoor unit controller 110 includes a first control unit 111. The first control unit 111 has multiple communication ports 112, multiple transmission ports 114 and multiple collection ports 113. Each indoor unit controller 130 is used to control the indoor unit corresponding to the identification.

[0087] The host computer 120 is connected to multiple indoor unit controllers 130, each indoor unit controller 130 is connected to a transmission port 114 that matches its own identification, each communication port 112 is connected to a control port that matches its own identification, and each acquisition port 113 is connected to the gas pipe temperature sensor and liquid pipe temperature sensor of the refrigeration branch that matches its own identification.

[0088] The indoor unit controller 130 and the outdoor unit controller 110 may be disposed in a housing and connected to the host computer 120 .

[0089] The host computer 120 simulates various mode signals sent by the remote control, such as cooling, heating, and air supply, and transmits them to the indoor unit controller 130. At the same time, the computer simulates signals such as the room temperature sensor and the evaporator pipe temperature sensor. Then, the indoor unit controller 130 outputs the outdoor unit compressor, four-way valve, outdoor fan control signal and electromagnetic expansion valve signal according to the set program to control the outdoor unit operation.

[0090] like Figure 4 As shown, after the air conditioner is connected online, that is, the pipelines and power supply are assembled according to the normal inspection process, the machine bar code is scanned, the outdoor unit is powered, and the synchronous power supply is powered to the five-way indoor unit controller 130. The indoor unit controller 130 enters the working mode, and the upper computer 120 sends a heating instruction to the indoor unit controller 130 marked with A. The compressor of the outdoor unit starts to operate, and the electronic expansion valve on the refrigeration branch A is opened according to a fixed opening. After running for 1 minute, the upper computer 120 judges the gas pipe temperature and liquid pipe temperature of the refrigeration branch A. When the gas pipe temperature of the refrigeration branch A is greater than the gas pipe temperature of the refrigeration branch B, the refrigeration branch C, the refrigeration branch D and the refrigeration branch E, and the difference between the gas pipe temperature of the refrigeration branch A and the liquid pipe temperature of the refrigeration branch A is greater than 10°C, it is determined that the refrigeration branch A is assembled correctly and the electronic expansion valve on the refrigeration branch A is closed.

[0091] The upper computer 120 sends a heating command to the indoor unit controller 130 marked with B, the compressor of the outdoor unit starts, and the electronic expansion valve on the refrigeration branch B opens according to a fixed opening. After running for 1 minute, the upper computer 120 judges the gas pipe temperature and liquid pipe temperature of the refrigeration branch B. When the gas pipe temperature of the refrigeration branch B is greater than the gas pipe temperature of the refrigeration branch A, refrigeration branch C, refrigeration branch D and refrigeration branch E, and the difference between the gas pipe temperature of the refrigeration branch B and the liquid pipe temperature of the refrigeration branch B is greater than 10°C, it is determined that the refrigeration branch B is assembled correctly and the electronic expansion valve on the refrigeration branch B is closed.

[0092] The upper computer 120 sends a heating command to the indoor unit controller 130 marked with C, the compressor of the outdoor unit starts, and the electronic expansion valve on the refrigeration branch C opens according to a fixed opening. After running for 1 minute, the upper computer 120 judges the gas pipe temperature and liquid pipe temperature of the refrigeration branch C. When the gas pipe temperature of the refrigeration branch C is greater than the gas pipe temperature of the refrigeration branch A, refrigeration branch B, refrigeration branch D and refrigeration branch E, and the difference between the gas pipe temperature of the refrigeration branch C and the liquid pipe temperature of the refrigeration branch C is greater than 10°C, it is determined that the refrigeration branch C is assembled correctly and the electronic expansion valve on the refrigeration branch C is closed.

[0093] The upper computer 120 sends a heating command to the indoor unit controller 130 marked with D, the compressor of the outdoor unit starts, and the electronic expansion valve on the refrigeration branch D opens according to a fixed opening. After running for 1 minute, the upper computer 120 judges the gas pipe temperature and liquid pipe temperature of the refrigeration branch D. When the gas pipe temperature of the refrigeration branch D is greater than the gas pipe temperature of the refrigeration branch B, refrigeration branch C, refrigeration branch A and refrigeration branch E, and the difference between the gas pipe temperature of the refrigeration branch D and the liquid pipe temperature of the refrigeration branch D is greater than 10°C, it is determined that the refrigeration branch D is assembled correctly and the electronic expansion valve on the refrigeration branch D is closed.

[0094] The upper computer 120 sends a heating command to the indoor unit controller 130 marked with E, the compressor of the outdoor unit starts, and the electronic expansion valve on the refrigeration branch E opens according to a fixed opening. After running for 1 minute, the upper computer 120 judges the gas pipe temperature and liquid pipe temperature of the refrigeration branch E. When the gas pipe temperature of the refrigeration branch E is greater than the gas pipe temperature of the refrigeration branch B, refrigeration branch C, refrigeration branch D and refrigeration branch A, and the difference between the gas pipe temperature of the refrigeration branch E and the liquid pipe temperature of the refrigeration branch E is greater than 10°C, it is determined that the refrigeration branch E is assembled correctly and the electronic expansion valve on the refrigeration branch E is closed.

[0095] After the upper computer 120 determines that it is qualified, it opens all the electronic expansion valves in the outdoor unit according to a fixed number of steps, runs the cooling system for 120 seconds, and makes other parameter judgments based on the temperature of the exhaust pipe, the temperature of the external coil, the temperature of the defrost device, and the temperature of the suction pipe. After the judgment is qualified, the system valve core is closed, the power is cut off, and the detection system is dismantled.

[0096] In the following cases, it is determined that the outdoor unit is assembled incorrectly.

[0097] When any communication line in the outdoor unit is mismatched, such as the communication line between the refrigeration branch B and the refrigeration branch C, a power-on command and a heating command are sent to the indoor unit controller 130 marked with B. It is detected that the gas pipe temperature of the refrigeration branch C is greater than the gas pipe temperature of the refrigeration branch B, and the gas pipe temperature of the refrigeration branch B minus the liquid pipe temperature is less than 10°C, indicating that the communication line between the refrigeration branch B and the refrigeration branch C is mismatched, or the electronic expansion valve is not opened normally.

[0098] When any electronic expansion valve coil in the outdoor unit is installed incorrectly, such as when the electronic expansion valve between the refrigeration branch A and the refrigeration branch C is mismatched, a power-on command and a heating command are sent to the indoor unit controller 130 marked with A. It is detected that the gas pipe temperature of the refrigeration branch C is greater than the gas pipe temperature of the refrigeration branch A, and the gas pipe temperature of the refrigeration branch A minus the liquid pipe temperature is less than 10°C, indicating that the communication line between the refrigeration branch A and the refrigeration branch C is mismatched, or the electronic expansion valve is not opened normally.

[0099] When the temperature sensor of any refrigeration branch in the outdoor unit is mismatched, such as the temperature sensor at the gas pipe and the temperature sensor at the liquid pipe of refrigeration branch D are installed reversely, when a power-on command and a heating command are sent to the indoor unit controller 130 marked with D, it is detected that the liquid pipe temperature of refrigeration branch D is greater than the gas pipe temperature, and the value of the liquid pipe temperature minus the gas pipe temperature is greater than 10°C, it means that the temperature sensor at the gas pipe and the temperature sensor at the liquid pipe of refrigeration branch D are installed reversely.

[0100] The detection system for one-to-many air conditioners provided in the embodiment of the present application is combined with the automatic data collection and judgment of the upper computer 120 to realize reliable operation detection of the outdoor units of the one-to-many air conditioners. It can effectively detect the incorrect connection of the multi-channel communication lines of the one-to-many air conditioners, the incorrect connection or abnormal opening of the electronic expansion valve, the incorrect installation of the temperature sensor, etc., to ensure that the outdoor units meet the quality requirements before leaving the factory.

[0101] An embodiment of the present application also provides a method for a detection system based on the above-mentioned one-to-many air conditioners, which is applied to a host computer.

[0102] The method based on the above-mentioned one-to-many air conditioner detection system can be applied to a terminal, and can be specifically executed by hardware or software in the terminal.

[0103] The method of the detection system based on the above-mentioned one-to-many air conditioners provided in the embodiment of the present application, the execution subject of the method of the detection system based on the above-mentioned one-to-many air conditioners can be an electronic device or a functional module or functional entity in the electronic device that can implement the method of the detection system based on the above-mentioned one-to-many air conditioners. The method of the detection system based on the above-mentioned one-to-many air conditioners provided in the embodiment of the present application is explained below using the electronic device as an example of the execution subject.

[0104] like Figure 3 As shown, the method based on the detection system of the one-to-many air conditioners includes: step 310, step 320 and step 330.

[0105] Step 310: Send a first temperature control instruction to the outdoor unit controller 110. The first temperature control instruction carries a first identifier. The first control unit 111 sends the first temperature control instruction to the communication port 112 that matches the first identifier, so that the control port connected to the communication port 112 that matches the first identifier controls the corresponding refrigeration branch to perform temperature control action.

[0106] Step 320: Based on the gas pipe temperature and liquid pipe temperature of the refrigeration branch matching the first identifier and the gas pipe temperature of the refrigeration branch matching other identifiers, obtain a sub-detection result of the refrigeration branch matching the first identifier.

[0107] Step 330: Obtain a first detection result of the outdoor unit based on the sub-detection result of each refrigeration branch.

[0108] According to the method of the detection system based on the above-mentioned one-to-many air conditioners provided in the embodiment of the present application, a temperature control instruction is sent to a certain control port in the outdoor unit, and the temperature control instruction is transmitted to the corresponding refrigeration branch via the communication line, so that the refrigeration branch performs the temperature control action, and the refrigeration system where the refrigeration branch is located realizes the refrigeration cycle. By analyzing the gas pipe temperature and liquid pipe temperature of the refrigeration branch that matches the identification of the control port, it is possible to detect the assembly error of the refrigeration branch itself, and by analyzing the gas pipe temperature of the refrigeration branch that matches other identifications, it is possible to detect the assembly error between the refrigeration branches at the same time, thereby realizing a more comprehensive detection of the outdoor unit, so that the outdoor unit can operate more stably and reliably after the assembly error is corrected.

[0109] The embodiment of the present application also provides a one-to-many air conditioner.

[0110] The one-to-many air conditioner includes an outdoor unit, which includes multiple refrigeration branches. Each refrigeration branch has a control port, and each control port is used to connect to a communication port 112 of the outdoor unit controller 110.

[0111] The outdoor unit is used to be detected by the above-mentioned one-to-many air conditioner detection system.

[0112] According to the one-to-many air conditioner provided in the embodiment of the present application, a temperature control instruction is sent to a certain control port in the outdoor unit, and the temperature control instruction is transmitted to the corresponding refrigeration branch via the communication line, so that the refrigeration branch performs the temperature control action, and the refrigeration system where the refrigeration branch is located realizes the refrigeration cycle. By analyzing the gas pipe temperature and liquid pipe temperature of the refrigeration branch that matches the identification of the control port, it is possible to detect the assembly error of the refrigeration branch itself, and by analyzing the gas pipe temperature of the refrigeration branch that matches other identifications, it is possible to detect the assembly error between the refrigeration branches at the same time, thereby realizing a more comprehensive detection of the outdoor unit, so that the outdoor unit can operate more stably and reliably after the assembly error is corrected.

[0113] In some embodiments, as Figure 5 As shown, an embodiment of the present application also provides an electronic device 500, including a processor 501, a memory 502, and a computer program stored in the memory 502 and executable on the processor 501. When the program is executed by the processor 501, each process of the above-mentioned method embodiment based on the detection system of the one-to-multi air conditioner is implemented, and the same technical effect can be achieved. To avoid repetition, it will not be described here.

[0114] It should be noted that the electronic devices in the embodiments of the present application include the mobile electronic devices and non-mobile electronic devices mentioned above.

[0115] An embodiment of the present application also provides a non-transitory computer-readable storage medium, on which a computer program is stored. When the computer program is executed by a processor, the various processes of the above-mentioned method embodiment based on the detection system of the above-mentioned one-to-multiple air conditioners are implemented, and the same technical effect can be achieved. To avoid repetition, it will not be repeated here.

[0116] The processor is the processor in the electronic device described in the above embodiment. The readable storage medium includes a computer readable storage medium, such as a computer read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk.

[0117] An embodiment of the present application also provides a computer program product, including a computer program, which, when executed by a processor, implements the above-mentioned method of the detection system based on the above-mentioned one-to-many air conditioner.

[0118] The processor is the processor in the electronic device described in the above embodiment. The readable storage medium includes a computer readable storage medium, such as a computer read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk.

[0119] An embodiment of the present application further provides a chip, which includes a processor and a communication interface, the communication interface is coupled to the processor, and the processor is used to run programs or instructions to implement the various processes of the above-mentioned method embodiment based on the above-mentioned one-to-multiple air conditioner detection system, and can achieve the same technical effect. To avoid repetition, it will not be repeated here.

[0120] It should be understood that the chip mentioned in the embodiments of the present application can also be called a system-level chip, a system chip, a chip system or a system-on-chip chip, etc.

[0121] It should be noted that, in this article, the terms "comprise", "include" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the statement "comprises a ..." does not exclude the presence of other identical elements in the process, method, article or device comprising the element. In addition, it should be noted that the scope of the methods and devices in the embodiments of the present application is not limited to performing functions in the order shown or discussed, and may also include performing functions in a substantially simultaneous manner or in the opposite order according to the functions involved. For example, the described method may be performed in an order different from that described, and various steps may also be added, omitted, or combined. In addition, the features described with reference to certain examples may be combined in other examples.

[0122] Through the description of the above implementation methods, those skilled in the art can clearly understand that the above-mentioned embodiment methods can be implemented by means of software plus the necessary general hardware platform, and of course can also be implemented by hardware, but in many cases the former is a better implementation method. Based on this understanding, the technical solution of the present application is essentially or the part that contributes to the prior art can be embodied in the form of a computer software product, which is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disk), including a number of instructions for enabling a terminal (which can be a mobile phone, computer, server, or network device, etc.) to execute the methods described in each embodiment of the present application.

[0123] The embodiments of the present application are described above in conjunction with the accompanying drawings, but the present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of this application, ordinary technicians in this field can also make many forms without departing from the purpose of this application and the scope of protection of the claims, all of which are within the protection of this application.

[0124] Throughout this specification, reference to terms such as "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples" means 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 present application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0125] Although the embodiments of the present application have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions, and variations may be made to the embodiments without departing from the principles and intent of the present application, and that the scope of the present application is defined by the claims and their equivalents.

Claims

1. A detection system for one-to-many air conditioners, characterized in that: The one-to-many air conditioner includes an outdoor unit, the outdoor unit includes multiple refrigeration branches, each of the refrigeration branches has a control port, and the detection system includes: The outdoor unit controller comprises a first control unit having a plurality of communication ports, each of the communication ports being used to connect to one of the control ports; a host computer, configured to send a first temperature control instruction to the outdoor unit controller, wherein the first temperature control instruction carries a first identifier, and the first control unit is configured to send the first temperature control instruction to the communication port matching the first identifier, so that the control port connected to the communication port matching the first identifier controls the corresponding cooling branch to perform a temperature control action; The host computer is used to obtain the sub-detection result of the refrigeration branch matching the first identifier based on the gas pipe temperature and liquid pipe temperature of the refrigeration branch matching the first identifier and the gas pipe temperature of the refrigeration branch matching other identifiers, and obtain the first detection result of the outdoor unit based on the sub-detection result of each refrigeration branch, and the sub-detection result is used to characterize whether the refrigeration branch is assembled correctly.

2. The detection system for one-to-many air conditioners according to claim 1, characterized in that: The host computer is used to compare the gas pipe temperature of the refrigeration branch matching the first identifier with the gas pipe temperature of the refrigeration branch matching other identifiers to obtain a first comparison result, compare the gas pipe temperature of the refrigeration branch matching the first identifier with the liquid pipe temperature to obtain a second comparison result, and based on the first comparison result and / or the second comparison result, obtain the sub-detection result of the refrigeration branch matching the first identifier.

3. The detection system for one-to-many air conditioners according to claim 2, characterized in that: The host computer is used to determine that the refrigeration branch matching the first identifier is correctly assembled when the first comparison result satisfies a first condition and the second comparison result satisfies a second condition; The host computer is configured to determine that the refrigeration branch matching the first identifier is abnormally assembled when the first comparison result does not satisfy the first condition or the second comparison result does not satisfy the second condition; The first condition is that the gas pipe temperature of the refrigeration branch matching the first identifier is greater than the gas pipe temperature of the refrigeration branch matching other identifiers, and the second condition is that the difference between the gas pipe temperature and the liquid pipe temperature of the refrigeration branch matching the first identifier is greater than the first difference threshold.

4. The detection system for one-to-many air conditioners according to claim 3, characterized in that: In the case where it is determined that the refrigeration branch matching the first identifier is assembled abnormally, the host computer is used to determine that the refrigeration branch matching the first identifier has a communication assembly abnormality when the gas pipe temperature of the refrigeration branch matching the first identifier is lower than the gas pipe temperature of any of the refrigeration branches matching other identifiers, and the difference between the gas pipe temperature and the liquid pipe temperature of the refrigeration branch matching the first identifier is lower than the first difference threshold.

5. The detection system for one-to-many air conditioners according to claim 4, characterized in that: The communication assembly abnormality includes incorrect connection of the communication line and abnormal communication control of the temperature control component.

6. The detection system for one-to-many air conditioners according to claim 3, characterized in that: When it is determined that the refrigeration branch matching the first identifier is assembled abnormally, the host computer is used to determine that the temperature sensor of the refrigeration branch matching the first identifier is assembled incorrectly when the difference between the liquid pipe temperature and the gas pipe temperature of the refrigeration branch matching the first identifier is greater than the first difference threshold.

7. The detection system for a one-to-many air conditioner according to any one of claims 1 to 6, characterized in that: The host computer is also used to send a second temperature control instruction to the outdoor unit controller after obtaining the first detection result. The first control unit is used to control the multiple refrigeration branches to perform temperature control actions based on the second temperature control instruction. The host computer is used to obtain the second detection result of the outdoor unit based on the temperature of the exhaust pipe of the outdoor unit, the temperature of the external coil, the temperature of the defrost device and the temperature of the intake pipe.

8. A method for detecting a one-to-many air conditioner system according to any one of claims 1 to 7, characterized in that: The method is applied to a host computer and includes: Sending a first temperature control instruction to the outdoor unit controller, the first temperature control instruction carrying a first identifier, the first control unit sending the first temperature control instruction to the communication port matching the first identifier, so that the control port connected to the communication port matching the first identifier controls the corresponding cooling branch to perform a temperature control action; Obtaining a sub-detection result of the refrigeration branch matching the first identifier based on the gas pipe temperature and the liquid pipe temperature of the refrigeration branch matching the first identifier and the gas pipe temperature of the refrigeration branch matching other identifiers; A first detection result of the outdoor unit is obtained based on the sub-detection result of each of the refrigeration branches.

9. A one-to-many air conditioner, characterized in that: The one-to-many air conditioner includes: An outdoor unit, the outdoor unit comprising a plurality of refrigeration branches, each of the refrigeration branches having a control port, each of the control ports being configured to connect to a communication port of a controller of the outdoor unit; The outdoor unit is used to be detected by the detection system for a one-to-many air conditioner according to any one of claims 1-7.

10. An electronic device 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 according to claim 8 is implemented.

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