CN115899971A

CN115899971A - Air conditioning equipment and fault processing method

Info

Publication number: CN115899971A
Application number: CN202211349063.9A
Authority: CN
Inventors: 杨春雪; 王晖; 郭斌; 李君飞; 高越; 贺长青; 辛电波
Original assignee: Qingdao Hisense Hitachi Air Conditioning System Co Ltd
Current assignee: Qingdao Hisense Hitachi Air Conditioning System Co Ltd
Priority date: 2022-10-31
Filing date: 2022-10-31
Publication date: 2023-04-04

Abstract

The embodiment of the application provides air conditioning equipment and a fault processing method, relates to the technical field of air conditioning equipment, and solves the problem that the air conditioning equipment cannot normally operate after a temperature detection device fails in the related art. The air conditioning apparatus includes: an outdoor unit including an outdoor heat exchanger; an indoor unit including an indoor heat exchanger; the temperature detection assembly comprises a plurality of temperature detection devices arranged on the indoor unit; the controller is connected with the indoor unit and the temperature detection assembly; the controller is configured to: determining a target temperature detection device with a fault according to a plurality of actual detection temperatures of a plurality of temperature detection devices in the process of operating the air conditioning equipment according to a first working parameter; predicting a target predicted temperature of the target temperature detection means based on an actual detected temperature of the temperature prediction means; obtaining a second working parameter according to the actual detection temperature and the target prediction temperature of the prediction temperature device; and controlling the air conditioning equipment to operate according to the second working parameter.

Description

Air conditioning equipment and fault processing method

Technical Field

The application relates to the technical field of air conditioning equipment, in particular to air conditioning equipment and a fault processing method.

Background

Air conditioning equipment is in actual operating mode, through a plurality of temperature parameters of a plurality of temperature sensor collection, adjusts indoor temperature to make indoor temperature be in reasonable scope, in order to guarantee the comfort level that the user used the air conditioner. For example, two temperature sensors are respectively arranged on the indoor unit to acquire the air pipe temperature and the air outlet temperature of the indoor unit in real time, so that the working frequency of the air-conditioning compressor can be reduced when the air outlet temperature and the air pipe temperature are too low or too high, and the air outlet temperature of the indoor unit can be adjusted within a proper temperature range.

Therefore, when the temperature sensor breaks down in the operation process of the air conditioning equipment, in order to prevent the air conditioning equipment from operating according to wrong temperature parameters, the air conditioning equipment can only be controlled to stop operating, and maintenance personnel can wait for maintaining the broken temperature sensor. Under the normal condition, the waiting time of waiting for maintenance personnel is long, the control requirement of the user on the indoor temperature can not be met for a long time, and the use effect of the user on the air conditioning equipment is reduced.

Disclosure of Invention

The embodiment of the application provides air conditioning equipment and a fault processing method, and aims to at least solve the problem that in the related art, after a temperature detection device breaks down, the air conditioning equipment cannot normally operate, so that the using effect of the air conditioning equipment is reduced.

In a first aspect, an air conditioning apparatus is provided, the air conditioning apparatus comprising: an outdoor unit including an outdoor heat exchanger; the indoor unit comprises an indoor heat exchanger, and the indoor heat exchanger is connected with the outdoor heat exchanger through a pipeline; the temperature detection assembly comprises a plurality of temperature detection devices arranged on the indoor unit and is used for detecting the following two or more temperature parameters: the air inlet temperature of the indoor heat exchanger, the air outlet temperature of the indoor heat exchanger, the air pipe temperature of the indoor heat exchanger and the liquid pipe temperature of the indoor heat exchanger; the controller is connected with the indoor unit and the temperature detection assembly; the controller is configured to: determining a target temperature detection device with a fault according to a plurality of actual detection temperatures of a plurality of temperature detection devices in the process of operating the air conditioning equipment according to a first working parameter; the target temperature detection device is any one of a plurality of temperature detection devices; predicting a target predicted temperature of the target temperature detection device based on an actual detected temperature of the temperature prediction device; the temperature predicting device is a temperature detecting device except the target temperature detecting device in the plurality of temperature detecting devices; obtaining a second working parameter according to the actual detection temperature and the target prediction temperature of the prediction temperature device; and controlling the air conditioning equipment to operate according to the second working parameter.

It should be noted that the operation mode of the air conditioning equipment operating according to the second operation parameter is the same as the operation mode of the air conditioning equipment operating according to the first operation parameter. Wherein, the mode of operation includes: a cooling mode, a heating mode, a dehumidification mode, a sterilization mode, and the like.

The technical scheme provided by the embodiment of the application at least has the following beneficial effects: and determining whether a fault device which has a fault exists in the plurality of temperature detection devices according to a plurality of actual detection temperatures of the plurality of temperature detection devices during the operation of the air conditioning equipment according to the first working parameter. A failed device is set as a target temperature detection device, and a non-failed device that has not failed among the plurality of temperature detection devices is set as a temperature prediction device. And predicting the detection temperature of the target temperature detection device with the fault by adopting the actual detection temperature of the temperature prediction device without the fault to obtain a reasonable target prediction temperature, so that the target preset temperature is used as a temperature parameter for reference in the running process of the air conditioning equipment instead of the actual detection temperature of the fault device, and a more accurate second working parameter is obtained based on the target prediction temperature. Therefore, the air conditioning equipment can correct the actual detection temperature of the fault device by using the actual detection temperature of the temperature detection device which does not have the fault under the condition that the temperature detection device has the fault so as to ensure the accuracy of the working parameters of the air conditioning equipment, so that the air conditioning equipment can still normally operate under the condition that a plurality of temperature detection device parts have the fault so as to ensure the use effect of users on the air conditioning equipment.

In some embodiments, the temperature detection devices of the plurality of temperature detection devices correspond to preset temperature ranges one to one; the controller is configured to perform determining a target temperature detection device in which a malfunction occurs, based on a plurality of actual detected temperatures of the plurality of temperature detection devices, and includes: and determining the temperature detection device of which the actual detection temperature is out of the preset temperature range as the target detection device.

It should be noted that the preset temperature range represents a reasonable temperature range detected by the temperature detection device in the normal operation process of the air conditioning equipment. Generally, different temperature detection devices correspond to different preset temperature ranges. In addition, the preset temperature ranges of the same temperature detection device are different in different operation modes.

In the practical application process, the probability of the fault occurring at the same time in two or more temperature detection devices among the multiple temperature detection devices is almost zero, so that the embodiment of the application describes the control method in detail in terms of the application scenario in which one temperature detection device among the multiple temperature detection devices has a fault.

In this embodiment, when the actual detection temperature of each temperature detection device is within the reasonable preset temperature range that can guarantee the normal operation of the air conditioning equipment, it indicates that each temperature detection device has no fault. On the contrary, when the actual detected temperature of any one of the plurality of temperature detection devices is out of the reasonable preset temperature range, it indicates that a faulty target detection device exists in the plurality of temperature detection devices. With this embodiment, it is possible to determine a target detection device that has failed among the plurality of temperature detection devices based on the preset temperature range. The determination mode of the determined target detection device is simple in logic and convenient to operate.

In some embodiments, the controller is further configured to perform: sequentially selecting any one temperature detection device from the plurality of temperature detection devices as a candidate detection device; inputting actual detection temperatures of temperature detection devices except the candidate detection device in the plurality of temperature detection devices into a preset model to obtain a first predicted temperature of the candidate detection device; when the absolute value of the difference between the first predicted temperature and the actual detection temperature of the candidate detection device is greater than or equal to a first difference threshold, taking the candidate detection device as a target detection device; the preset model is a relational equation formed by summing products of the temperature parameters of the plurality of temperature detection devices and the temperature coefficients corresponding to the temperature parameters and preset values.

The first difference threshold is greater than 0, and the first difference threshold is inversely related according to the accuracy of each temperature detection device, that is, the higher the accuracy of the temperature detection device is, the smaller the first difference threshold is.

In the embodiment, in the operation process of the air conditioning equipment, the (N-1) actual detection temperatures of the (N-1) temperature detection devices in the N temperature detection devices are input into a preset model, and the detection temperature of any one temperature detection device in the N temperature detection devices is predicted to obtain the first predicted temperature of each temperature detection device. And determining a target detection device based on the difference between each first predicted temperature and the corresponding actual detection temperature.

The mode of sequentially determining the first predicted temperature of each temperature detection device based on the preset model to determine the target detection device can predict the micro fault deviation occurring in the precision range of the temperature detection device, so that the fault detection of the determined target detection device is more accurate, and the fault judgment precision of the air conditioning equipment is improved.

In some embodiments, the controller is configured to perform predicting a target predicted temperature of the target temperature detection device based on an actual detected temperature of the temperature prediction device, including: when the absolute value of the difference between the first predicted temperature and the actual detected temperature of the target detection device is greater than or equal to a first difference threshold and less than a second difference threshold; and inputting each actual detection temperature of the temperature prediction device into a preset model to obtain the target prediction temperature of the target detection device.

Wherein the second difference threshold is greater than the first difference threshold.

Based on this, the absolute value of the difference between the first predicted temperature and the actual detected temperature of the target detection device is greater than or equal to the first difference threshold and less than or equal to the second difference threshold, which indicates that each temperature coefficient of the preset model meets the prediction accuracy requirement, and then the target predicted temperature is predicted based on each actual detected temperature of the preset model and the temperature prediction device.

In some embodiments, the controller is further configured to: when the absolute value of the difference between the first predicted temperature and the actual detected temperature of the target detection device is greater than or equal to a second difference threshold; correcting each temperature coefficient in the preset model by using the stored historical actual detection temperature of the air conditioning equipment to obtain a corrected preset model; and inputting each actual detected temperature of the temperature detection devices except the target detection device in the plurality of temperature detection devices into the corrected preset model to obtain the target predicted temperature of the target detection device.

Based on the above, if the absolute value of the difference between the first predicted temperature and the actual detected temperature of the target detection device is greater than or equal to the second difference threshold, which indicates that each temperature coefficient of the preset model does not meet the prediction accuracy requirement, each temperature coefficient is corrected to correct the preset model, and then the target predicted temperature is predicted based on the corrected preset model and each actual detected temperature of the temperature prediction device.

In some embodiments, the controller is configured to perform selection of any one of the plurality of temperature detection devices as the candidate detection device, including: summing products of each actual detection temperature of the plurality of temperature detection devices and each corresponding temperature coefficient to obtain a temperature influence value; and under the condition that the absolute value of the difference value between the temperature influence value and the preset value is larger than a third difference threshold value, selecting any one temperature detection device from the plurality of temperature detection devices as a candidate detection device.

In this embodiment, the products of each actual detected temperature and each corresponding temperature coefficient are summed to determine the temperature influence value. And when the temperature influence value and the preset value are greater than the third difference threshold value, the fact that a fault device exists in each temperature detection device is indicated, and the operation of determining the target detection device with the fault based on the preset model is started, so that the target detection device is determined at a reasonable time, and the invalid operation times of determining the target detection device is reduced.

In some embodiments, the controller is further configured to: and under the condition that the absolute value of the difference value between the temperature influence value and the preset value is less than or equal to a third difference threshold value, controlling the air conditioning equipment to continuously operate according to the first working parameter.

In this embodiment, when the temperature influence value and the preset value are less than or equal to the third difference threshold, it indicates that no fault device exists in each temperature detection device, and the air conditioning equipment continues to operate according to the original operating parameters (i.e., the first operating parameters).

In some embodiments, the controller is further configured to perform: and when the absolute value of the difference between the first predicted temperature of each candidate detection device and the actual detection temperature of each candidate detection device is smaller than a first difference threshold, controlling the air conditioning equipment to continuously operate according to the first working parameter.

In this embodiment, if the difference between the actual detected temperature of each temperature detection device and the corresponding first predicted temperature is smaller than the first difference threshold, it indicates that there is no faulty device in each temperature detection device, and the air conditioning equipment continues to operate according to the original operating parameters (i.e., the first operating parameters).

In some embodiments, the controller is further configured to: responding to a starting operation instruction executed by a user, wherein the starting operation instruction comprises indication information indicating a target temperature detection device, and determining the target temperature detection device according to the indication information; predicting a target predicted temperature of the target temperature detection means based on an actual detected temperature of the temperature prediction means; obtaining a second working parameter according to the actual detection temperature and the target prediction temperature of the prediction temperature device; and controlling the air conditioning equipment to operate according to the second working parameter.

In this embodiment, in a scenario where a user knows that a target temperature detection device has a fault, when the user performs a power-on operation, the air conditioning equipment maintains a normal operation mode.

In a second aspect, a fault handling method for an air conditioning apparatus is provided, the method including: determining a target temperature detection device with a fault according to a plurality of actual detection temperatures of a plurality of temperature detection devices in the process of operating the air conditioning equipment according to a first working parameter; the target temperature detection device is any one of a plurality of temperature detection devices; predicting a target predicted temperature of the target temperature detection device based on an actual detected temperature of the temperature prediction device; the temperature predicting device is a temperature detecting device except the target temperature detecting device in the plurality of temperature detecting devices; obtaining a second working parameter according to the actual detection temperature and the target prediction temperature of the prediction temperature device; controlling the air conditioning equipment to operate according to the second working parameter; the temperature detection devices are used for detecting two or more of the following temperature parameters: the air inlet temperature of the indoor heat exchanger, the air outlet temperature of the indoor heat exchanger, the air pipe temperature of the indoor heat exchanger and the liquid pipe temperature of the indoor heat exchanger.

In a third aspect, an embodiment of the present application provides a computer-readable storage medium, where instructions are stored, and when the instructions are executed on any one of the apparatuses, the instructions cause the apparatus to execute any one of the fault handling methods of the air conditioning equipment.

In a fourth aspect, an embodiment of the present application provides a chip, including: a processor and a memory; the memory is used for storing computer execution instructions, the processor is connected with the memory, and when the chip runs, the processor executes the computer execution instructions stored by the memory, so that the chip executes the fault processing method of any air conditioning equipment.

In a fifth aspect, embodiments of the present application provide a computer program product containing instructions that, when run on any one of the above-mentioned apparatuses, cause the apparatus to perform any one of the above-mentioned fault handling methods for an air conditioning apparatus.

In the embodiments of the present application, the names of the components of the above-mentioned apparatus do not limit the apparatus itself, and in practical implementations, these components may appear by other names. As long as the functions of the respective components are similar to those of the embodiments of the present application, they are within the scope of the claims of the present application and their equivalents.

In addition, for technical effects brought by any one of the design methods in the second aspect to the fifth aspect, reference may be made to the technical effects brought by the different design methods in the first aspect, and details are not repeated herein.

Drawings

The accompanying drawings are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the example serve to explain the principles of the invention and not to limit the invention.

Fig. 1 is a schematic structural diagram of an air conditioning apparatus according to an embodiment of the present application;

fig. 2 is a schematic structural diagram of an indoor unit provided in an embodiment of the present application;

fig. 3 is a circuit architecture diagram of an air conditioning apparatus according to an embodiment of the present application;

fig. 4 is a flowchart of a fault handling method for an air conditioning device according to an embodiment of the present application;

fig. 5 is a flowchart of a fault handling method for an air conditioning device according to an embodiment of the present application;

fig. 6 is a flowchart of a fault handling method for an air conditioning device according to an embodiment of the present application;

fig. 7 is a flowchart of a fault handling method for an air conditioning device according to another embodiment of the present disclosure;

fig. 8 is a flowchart of a fault handling method for an air conditioning device according to an embodiment of the present application;

fig. 9 is a flowchart of a fault handling method for an air conditioning device according to another embodiment of the present application;

fig. 10 is a schematic hardware structure diagram of a controller according to an embodiment of the present disclosure.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments in the present application without making any creative effort belong to the protection scope of the present application.

The terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless otherwise specified.

In the description of the present application, it should be noted that the terms "connected" and "connected" are to be construed broadly and may include, for example, a fixed connection, a detachable connection, or an integral connection unless otherwise explicitly stated or limited. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art. In addition, when a pipeline is described, the terms "connected" and "connected" are used in this application to have a meaning of conducting. The specific meaning is to be understood in conjunction with the context.

In the embodiments of the present application, words such as "exemplary" or "for example" are used to mean serving as an example, instance, or illustration. Any embodiment or design described herein as "exemplary" or "e.g.," is not necessarily to be construed as preferred or advantageous over other embodiments or designs. Rather, use of the word "exemplary" or "such as" is intended to present concepts related in a concrete fashion.

Air conditioning equipment is in the actual work mode, through a plurality of temperature parameters of a plurality of temperature sensor gathers, adjusts indoor temperature to make indoor temperature be in reasonable scope, in order to guarantee the comfort level that the user used the air conditioner. For example, two temperature sensors are respectively arranged on the indoor unit to acquire the air pipe temperature and the air outlet temperature of the indoor unit in real time, so that the working frequency of the air-conditioning compressor can be reduced when the air outlet temperature and the air pipe temperature are too low or too high, and the air outlet temperature of the indoor unit can be adjusted within a proper temperature range.

Therefore, when the temperature sensor breaks down in the operation process of the air conditioning equipment, in order to prevent the air conditioning equipment from operating according to wrong temperature parameters, the air conditioning equipment can only be controlled to stop operating, and maintenance personnel can wait for maintaining the broken temperature sensor. Under the normal condition, the waiting time of waiting for maintenance personnel is longer, the control requirement of the user on the indoor temperature can not be met for a longer time, and the use effect of the user on the air conditioning equipment is reduced.

In view of this, an embodiment of the present application provides an air conditioning apparatus, which determines whether a faulty device that has a fault exists in a plurality of temperature detection devices according to a plurality of actual detection temperatures of the plurality of temperature detection devices during an operation of the air conditioning apparatus according to a first operating parameter. A failed device is set as a target temperature detection device, and a non-failed device, which has not failed, among the plurality of temperature detection devices is set as a temperature prediction device. And predicting the detection temperature of the target temperature detection device with the fault by adopting the actual detection temperature of the temperature prediction device without the fault to obtain a reasonable target prediction temperature, so that the target preset temperature is used as a temperature parameter for reference in the running process of the air conditioning equipment instead of the actual detection temperature of the fault device, and a more accurate second working parameter is obtained based on the target prediction temperature. Therefore, the air conditioning equipment can correct the actual detection temperature of the fault device by using the actual detection temperature of the temperature detection device which does not have the fault under the condition that the temperature detection device has the fault so as to ensure the accuracy of the working parameters of the air conditioning equipment, so that the air conditioning equipment can still normally operate under the condition that a plurality of temperature detection device parts have the fault so as to ensure the use effect of users on the air conditioning equipment.

In the embodiment of the present application, the air conditioners may be a multi-split air conditioner, a single air conditioner, and the like, the multi-split air conditioner includes an outdoor unit and a plurality of indoor units, and the single air conditioner includes an outdoor unit corresponding to one indoor unit.

To further describe the solution of the present application, a schematic structural diagram of an air conditioning device provided in the embodiments of the present application is described below by taking a single air conditioning device as an example.

Referring to fig. 1 and 2, the air conditioner 100 may include: an outdoor unit 200, an indoor unit 300, and a controller 103. The outdoor unit 200 includes: an outdoor heat exchanger 201, a compressor 202, a four-way valve 203, a bypass cut-off valve 204, an outdoor electromagnetic valve 205 and an outdoor throttling device 206.

In some embodiments, the outdoor unit further includes an outdoor liquid pipe temperature sensor 207 for detecting a liquid pipe temperature.

In some embodiments, the compressor 202, the four-way valve 203, the outdoor heat exchanger 201 in the outdoor unit 200, and the indoor expansion valve, the indoor heat exchanger, and the circulation branch solenoid valve in each indoor unit are sequentially connected by pipes to form a refrigerant circulation loop.

In some embodiments, the outdoor heat exchanger 201 is connected to the compressor 202 at one end via a four-way valve 203 and to the indoor heat exchanger at the other end. The outdoor heat exchanger 201 exchanges heat between the refrigerant flowing through the heat transfer tubes of the outdoor heat exchanger 201 and the outdoor air.

In some embodiments, the compressor 202 is disposed between the indoor heat exchanger and the outdoor heat exchanger 201 for providing power for the refrigerant cycle. In the cooling mode, for example, the compressor 202 sends the compressed refrigerant to the outdoor heat exchanger 201 via the four-way valve 203. Alternatively, the compressor 202 may be a variable capacity inverter compressor 202 that is controlled based on the rotational speed of the inverter.

In some embodiments, four ports of the four-way valve 203 are respectively connected to the discharge port of the compressor 202, the outdoor heat exchanger 201, the suction port of the compressor 202, and the indoor heat exchanger of each indoor unit. The four-way valve 203 is used for realizing the interconversion between the cooling mode and the heating mode by changing the flow direction of the refrigerant in the system pipeline.

In some embodiments, a bypass cut-off valve 204 is disposed between the four-way valve 203 and the indoor heat exchanger of each indoor unit, and the bypass cut-off valve 204 is normally opened after the installation of the air conditioner is completed.

In some embodiments, the outdoor solenoid valve 205 is disposed on the refrigerant bypass branch between the four-way valve 203 and each indoor heat exchanger, and is used for controlling the connection and disconnection of the refrigerant bypass branch.

In some embodiments, the outdoor throttling device 206 is disposed between the outdoor solenoid valve 205 and the compressor 202 for reducing the pressure of the high-temperature and high-pressure refrigerant delivered from the discharge port of the compressor. Illustratively, the outdoor throttle 206 may include an electronic expansion valve and/or a capillary tube. Alternatively, the outdoor throttle device 206 may be disposed between the outdoor electromagnetic valve 205 and the bypass cut-off valve 204. Alternatively, the outdoor throttle device 206 may be provided between the bypass cut-off valve 204 and each indoor unit. This is not limited by the present application.

In some embodiments, the outdoor unit 200 further includes an outdoor fan (not shown) that generates an airflow of the outdoor air passing through the outdoor heat exchanger 201 to promote heat exchange between the refrigerant flowing through the heat transfer pipes of the outdoor heat exchanger 201 and the outdoor air.

In some embodiments, the outdoor unit 200 further includes an outdoor fan motor (not shown) connected to the outdoor fan for driving or changing the rotation speed of the outdoor fan.

In some embodiments, the outdoor unit 200 further includes a high pressure switch (not shown), which is electrically connected to the controller 103 and is configured to monitor the pressure of the air conditioning pipeline, and send an abnormal message to the controller 103 when the pipeline pressure of the air conditioning equipment 100 is abnormal, so that the controller 103 controls the system to stop and the normal operation of the air conditioning equipment 100 is ensured.

Further, the indoor unit 300 includes: an indoor heat exchanger 301, an indoor expansion valve 302, a bypass branch solenoid valve 303, and a circulation branch solenoid valve 304.

In some embodiments, the indoor unit 300 further includes a temperature detection assembly 305 and an indoor fan 306. The temperature detection assembly at least comprises the following two temperature sensors: indoor air inlet temperature sensor, indoor air outlet temperature sensor, indoor air pipe temperature sensor and indoor liquid pipe temperature sensor.

As shown in fig. 2, in some embodiments, (1) an indoor intake air temperature sensor 305A is disposed behind intake air of the indoor heat exchanger 301 for detecting the intake air temperature of the indoor heat exchanger 301. (2) The indoor outlet air temperature sensor 305B is provided at the outlet of the indoor heat exchanger 301, and detects the outlet air temperature of the indoor heat exchanger 301. (3) The indoor air pipe temperature sensor 305C is provided in the air pipe of the indoor heat exchanger 301, and detects the air pipe temperature of the indoor heat exchanger 301. (4) The indoor liquid pipe temperature sensor 305D is provided in the liquid pipe of the indoor heat exchanger 301, and detects the liquid pipe temperature of the indoor heat exchanger 301. (5) The filter 307 is provided to the liquid pipe of the indoor heat exchanger 301.

In some embodiments, the discharge port of the compressor 202 in the outdoor unit 200, the outdoor throttling device 206, the outdoor solenoid valve 205, the bypass stop valve 204, and the bypass solenoid valve and the indoor heat exchanger in the indoor unit are connected in sequence through pipes to form a refrigerant bypass branch.

In some embodiments, the indoor heat exchanger 301 is configured to exchange heat between the refrigerant flowing through the heat transfer tubes of the indoor heat exchanger 301 and the indoor air.

In some embodiments, the indoor expansion valve 302 is disposed between the indoor heat exchanger 301 and the outdoor heat exchanger 201, and has a function of expanding and decompressing the refrigerant flowing through the electronic expansion valve, and may be used to adjust the supply amount of the refrigerant in the pipeline. Alternatively, the air conditioner 100 may be provided with a plurality of electronic expansion valves. If the opening degree of the electronic expansion valve is decreased, the flow path resistance of the refrigerant passing through the electronic expansion valve is increased. If the opening degree of the electronic expansion valve is increased, the flow path resistance of the refrigerant passing through the electronic expansion valve is decreased. In this way, even if the state of other components in the circuit does not change, the flow rate of the refrigerant flowing through the indoor heat exchanger 301 or the outdoor heat exchanger 201 changes when the opening degree of the electronic expansion valve changes. It should be noted that the number of the electronic expansion valves shown in fig. 1 is only an example, and the present application is not limited thereto.

In some embodiments, the bypass solenoid valve 303 is disposed between the indoor heat exchanger 301 and the four-way valve 203, and is used for controlling communication and cut-off of a refrigerant bypass branch of a single indoor unit. It should be understood that the bypass branch solenoid valve 303 may also be disposed between the bypass blocking valve 204 and the four-way valve 203, or between the indoor heat exchanger 301 and the four-way valve 203, as long as it is disposed on the main branch of the bypass refrigerant branch of each indoor unit, which is not limited in this application.

In some embodiments, the circulation branch solenoid valve 304 is disposed between the indoor heat exchanger 301 and the four-way valve 203, and is used for controlling the connection and disconnection of the refrigerant circulation branches of the single indoor unit.

In some embodiments, the indoor fan 306 generates an airflow of the indoor air passing through the indoor heat exchanger 301 to promote heat exchange between the refrigerant flowing in the heat transfer pipe of the indoor heat exchanger 301 and the indoor air.

In some embodiments, the indoor unit 300 further includes an indoor fan motor (not shown) connected to the indoor fan for driving or changing a rotational speed of the indoor fan.

In some embodiments, the indoor unit 300 further includes a plurality of capillary tubes (not shown) for reducing the pressure of the refrigerant in the pipes, and for depressurizing the high-pressure refrigerant delivered from the condenser and delivering the depressurized refrigerant to the evaporator.

In some embodiments, the indoor unit 300 further includes a humidity sensor (not shown) for detecting the relative humidity of the indoor air.

In some embodiments, the indoor unit 300 further includes a dew point meter (not shown) for detecting an ambient dew point temperature near the indoor heat exchanger.

In some embodiments, the indoor unit 300 further includes a display 102. There is an electrical connection between the display 102 and the controller 103. Optionally, the display 102 is used to display a control panel of the air conditioner 100, for example, the display 102 may be used to display an indoor temperature or a current operation mode. Alternatively, the display 102 is connected to the controller 103, and the user can perform operations on the control panel through the display 102 to set a program. Optionally, the display 102 further includes a pressure sensor or a temperature sensor, and the display 102 may transmit a user command to the control to implement a human-computer interaction function according to a gesture operation of the user, such as pressing a key or the like. Alternatively, the display 102 may be a liquid crystal display 102, an organic light-emitting diode (OLED) display 102. The particular type, size, resolution, etc. of the display 102 are not limiting, and those skilled in the art will appreciate that the display 102 may be modified in performance and configuration as desired.

In some embodiments, the controller 103 refers to a device that can generate an operation control signal according to the command operation code and the timing signal, and instruct the air conditioner 100 to execute the control command. Illustratively, the controller 103 may be a Central Processing Unit (CPU), a general purpose processor Network Processor (NP), a Digital Signal Processor (DSP), a microprocessor, a microcontroller, a Programmable Logic Device (PLD), or any combination thereof. The controller 103 may also be other devices with processing functions, such as a circuit, a device, or a software module, which is not limited in any way by the embodiments of the present application.

Although not shown in fig. 1, the air conditioner 100 may further include a power supply device (such as a battery and a power management chip) for supplying power to each component, and the battery may be logically connected to the controller through the power management chip, so that the power consumption management and other functions of the air conditioner 100 are implemented through the power supply device.

Fig. 3 schematically shows a circuit configuration diagram of the air conditioner 100.

As shown in fig. 3, the air conditioner 100 may further include: the system comprises a correction device 101, an early warning device 104, a communication device 105, a man-machine interaction device 106 and a power supply 107.

The correction device 101, the early warning device 104, the communication device 105, the human-computer interaction device 106 and the power supply 107 are all connected with the controller 103.

In some embodiments, the early warning device 104 is used to send out an early warning when the temperature detection device fails.

In some embodiments, the modifying means 101 is configured to modify the temperature coefficient of the preset model by using the historical temperature parameter during normal operation in the corresponding operation mode.

In some embodiments, the communication device 105 is a component for communicating with an external device or an external server according to various communication protocol types. For example: the communication device may include at least one of a Wi-Fi chip, a bluetooth communication protocol chip, a wired ethernet communication protocol chip, or other network communication protocol chip or near field communication protocol chip, and an infrared receiver.

In some embodiments, the air conditioner 100 may transmit control signals and data signals with a terminal device (e.g., a mobile phone, a tablet computer, a wearable mobile device, etc.) used by a user, other household devices (e.g., an air conditioner, a monitoring device, etc.), and a server through the communication device 105. For example, a user may send an instruction indicating to turn on the operation mode (e.g., turn on the heating mode, the cooling mode, the dehumidifying mode, or the sterilizing operation mode) through a mobile phone, the air conditioner 100 may receive the instruction through the communication device 105, and the controller 103 of the air conditioner 100 may turn on the corresponding operation mode in response to the instruction indicating to turn on the operation mode.

In some embodiments, the human-computer interaction device 106 is used for realizing the interaction between the user and the air conditioner 100. The human-computer interaction device 106 may include one or more of a physical key, a touch display panel, or a voice recognition device. For example, the user may start the air conditioner 100 to operate through the human-computer interaction device 106, or may set an operation program for the air conditioner 100 to operate through the human-computer interaction device 106.

In some embodiments, the power supply 107, under the control of the controller 103, provides power supply support for the air conditioner 100 from the power input from the external power source.

Based on the air conditioning equipment, as shown in fig. 4, an embodiment of the present application provides a fault handling method for air conditioning equipment, including the following steps:

step S401, in the process that the air conditioning equipment operates according to the first working parameter, determining a target temperature detection device with a fault according to a plurality of actual detection temperatures of a plurality of temperature detection devices.

Wherein the target temperature detection device is any one of a plurality of temperature detection devices.

The temperature detection devices are arranged on the indoor unit and used for detecting the following two or more temperature parameters: the air inlet temperature of the indoor heat exchanger, the air outlet temperature of the indoor heat exchanger, the air pipe temperature of the indoor heat exchanger and the liquid pipe temperature of the indoor heat exchanger.

The number of the plurality of temperature detection devices is at least the same as the number of temperature parameters required. For example, the temperature parameters are the inlet air temperature and the outlet air temperature, and the plurality of temperature detection devices may be two or more than two, that is, at least two temperature detection devices are required to be in one-to-one correspondence with the inlet air temperature and the outlet air temperature.

In step S402, a target predicted temperature of the target temperature detection means is predicted based on the actual detected temperature of the temperature prediction means.

The temperature predicting device is a temperature detecting device except the target temperature detecting device among the plurality of temperature detecting devices.

And S403, obtaining a second working parameter according to the actual detection temperature and the target prediction temperature of the temperature prediction device.

And step S404, controlling the air conditioning equipment to operate according to the second working parameter.

It should be noted that the operation mode of the air conditioning equipment operating according to the second operation parameter is the same as the operation mode of the air conditioning equipment operating according to the first operation parameter. The working mode comprises: a cooling mode, a heating mode, a dehumidification mode, a sterilization mode, and the like.

The technical solution shown in fig. 4 brings at least the following beneficial effects: and determining whether a fault device with a fault exists in the plurality of temperature detection devices according to a plurality of actual detection temperatures of the plurality of temperature detection devices in the process that the air conditioning equipment operates according to the first operating parameter. A failed device is set as a target temperature detection device, and a non-failed device that has not failed among the plurality of temperature detection devices is set as a temperature prediction device. And predicting the detection temperature of the target temperature detection device with the fault by adopting the actual detection temperature of the temperature prediction device without the fault to obtain a reasonable target prediction temperature, so that the target preset temperature is used as a temperature parameter for reference in the running process of the air conditioning equipment instead of the actual detection temperature of the fault device, and a more accurate second working parameter is obtained based on the target prediction temperature.

Therefore, the air conditioning equipment can correct the actual detection temperature of the fault device by using the actual detection temperature of the temperature detection device which does not have the fault under the condition that the temperature detection device has the fault so as to ensure the accuracy of the working parameters of the air conditioning equipment, so that the air conditioning equipment can still normally operate under the condition that a plurality of temperature detection device parts have the fault so as to ensure the use effect of users on the air conditioning equipment.

A specific embodiment of the target temperature detection device for identifying a failure in step S401 will be described below.

As an implementation manner of determining a target temperature detection device, if a temperature detection device of a plurality of temperature detection devices corresponds to a preset temperature range one to one, with reference to fig. 4, as shown in fig. 5, a controller can determine a target temperature detection device having a fault based on the preset temperature range, and the specific implementation steps are as follows:

in step S501, a temperature detection device, of the plurality of temperature detection devices, whose actual detected temperature is outside the preset temperature range is determined as a target detection device.

In the embodiment, when the actual detection temperature of each temperature detection device is within the reasonable preset temperature range which can ensure the normal operation of the air conditioning equipment, it is indicated that each temperature detection device does not break down. On the contrary, when the actual detected temperature of any one of the plurality of temperature detection devices is out of the reasonable preset temperature range, it indicates that a faulty target detection device exists in the plurality of temperature detection devices.

With this embodiment, it is possible to determine a target detection device that has failed among the plurality of temperature detection devices based on the preset temperature range. The determination mode of the target determination detection device is simple in logic and convenient to operate.

As another implementation manner of determining the target temperature detection device, with reference to fig. 4 and as shown in fig. 6, the controller may further determine the target temperature detection device that has a fault based on a preset model, and the specific implementation steps are as follows:

in step S601, any one of the plurality of temperature detection devices is sequentially selected as a candidate detection device.

In some examples, the controller may determine whether determination of the target temperature detection device using the preset model is required based on a preset value of the preset model as a determination condition. The specific implementation steps comprise: summing products of each actual detection temperature of the plurality of temperature detection devices and each corresponding temperature coefficient to obtain a temperature influence value; and under the condition that the absolute value of the difference value between the temperature influence value and the preset value is larger than a third difference threshold value, selecting any one temperature detection device from the plurality of temperature detection devices as a candidate detection device.

In this example, the products of the respective actual detected temperatures and the corresponding respective temperature coefficients are first summed to determine the temperature influence value. And when the temperature influence value and the preset value are greater than the third difference threshold value, the fact that a fault device exists in each temperature detection device is indicated, and the operation of determining the target detection device with the fault based on the preset model is started, so that the target detection device is determined at a reasonable time, and the invalid operation times of determining the target detection device is reduced.

Correspondingly, in another example, the controller is further configured to: and under the condition that the absolute value of the difference value between the temperature influence value and the preset value is less than or equal to a third difference threshold value, controlling the air conditioning equipment to continuously operate according to the first working parameter.

In this example, when the temperature influence value and the preset value are less than or equal to the third difference threshold, it indicates that no faulty device exists in each temperature detection device, and the air conditioning equipment continues to operate according to the original operating parameters (i.e., the first operating parameters).

As another implementation of determining the target temperature detection device, in a case where the failed target temperature detection device is known, information of the failed target temperature detection device is sent to the controller by a power-on command.

Illustratively, a user determines a failed temperature detection device according to experience, and when the air conditioning equipment is started to operate, the indication information indicating the target temperature detection device is sent out through a starting instruction, so that the controller determines the target temperature detection device through the indication information of the starting instruction.

In another example, the target temperature detection device may indicate information to the controller in case of a fault, and when the user powers on, the indication information is sent to the controller together with the power-on command.

Based on the implementation mode of the scene, an implementation mode of fault processing is provided. Specifically, in response to a power-on operation instruction executed by a user, the power-on operation instruction includes indication information indicating a target temperature detection device, and the target temperature detection device is determined according to the indication information; predicting a target predicted temperature of the target temperature detection means based on an actual detected temperature of the temperature prediction means; obtaining a second working parameter according to the actual detection temperature and the target prediction temperature of the prediction temperature device; and controlling the air conditioning equipment to operate according to the second operating parameter.

For example, in the case that the target temperature detection device with the fault is determined, the air conditioner is controlled to operate in a standby operation mode in response to a power-on operation instruction executed by a user, wherein the air conditioner operates according to the second operating parameter in the standby operation mode.

It should be noted that, the manner of determining the second operating parameter in the foregoing embodiments is applicable to this embodiment, and repeated description is not repeated here for the manner of determining the second operating parameter.

In step S602, the actual detected temperatures of the temperature detection devices other than the candidate detection device among the plurality of temperature detection devices are input to a preset model, and a first predicted temperature of the candidate detection device is obtained.

The preset model is a relational equation formed by summing products of the temperature parameters of the plurality of temperature detection devices and the temperature coefficients corresponding to the temperature parameters and preset values.

Illustratively, the preset model is obtained by training according to the acquired historical temperature parameters of each temperature detection device in the normal operation process of the air conditioning equipment.

In step S603, when the absolute value of the difference between the first predicted temperature and the actual detected temperature of the candidate detection device is greater than or equal to the first difference threshold, the candidate detection device is set as the target detection device.

For example, the following description will be made on a manner of determining the target detection device, taking a plurality of temperature detection devices as a first temperature detection device, a second temperature detection device, a third temperature detection device, and a fourth temperature detection device as an example; the first temperature detection device is used for detecting the inlet air temperature of the indoor heat exchanger; the second temperature detection device is used for detecting the air outlet temperature of the indoor heat exchanger; the third temperature detection device is used for detecting the air pipe temperature of the indoor heat exchanger; and the fourth temperature detection device is used for detecting the temperature of the liquid pipe of the indoor heat exchanger.

In some embodiments, the temperature detection device is a temperature sensor.

Specifically, the temperature coefficients corresponding to the first temperature detection device, the second temperature detection device, the third temperature detection device and the fourth temperature detection device are a, B, C and D; the actual detection temperatures of the four detection devices are an air inlet temperature TI, an air outlet temperature TO, an air pipe temperature TG and a liquid pipe temperature TL; the preset value may be a constant of 0. Based on the above parameter settings, the preset model can be represented by the following equation: a × TI + B × TO + C × TG + D × TL =0.

First, the fourth temperature detection device is a candidate detection device. The actual detection temperature of three detection devices, namely a first temperature detection device, a second temperature detection device and a third temperature detection device is as follows: TI, TO and TG are input into a preset model, and a first predicted temperature Td of the fourth temperature detection device is obtained. When the absolute value of (TL-Td) is less than or equal to the first difference threshold, it indicates that the fourth temperature detection device is not failed; and when the absolute value of the TL-Td is greater than the first difference threshold value, the fourth temperature detection device is indicated to be in fault, namely the fourth temperature detection device is the target detection device.

Second, the third temperature detection device is a candidate detection device. The actual detection temperature of three detection devices, namely a first temperature detection device, a second temperature detection device and a fourth temperature detection device is as follows: TI, TO and TL are input into a preset model, and the first predicted temperature Tc of the third temperature detection device is obtained. When the absolute value of (TG-Tc) is less than or equal to the first difference threshold, it indicates that the third temperature detection device is not malfunctioning; when the absolute value of (TG-Tc) is greater than the first difference threshold, it is indicated that the third temperature detection means is malfunctioning, i.e., the third temperature detection means is the target detection means.

And thirdly, the second temperature detection device is a candidate detection device. And (3) actual detection temperatures of three detection devices, namely a first temperature detection device, a third temperature detection device and a fourth temperature detection device are measured: TI, TG and TL are input into a preset model, and a first predicted temperature Tb of the second temperature detection device is obtained. When the absolute value of the (TO-Tb) is less than or equal TO the first difference threshold, the second temperature detection device is not in fault; and when the absolute value of the (TO-Tb) is larger than the first difference threshold value, the second temperature detection device is indicated TO be in failure, namely the second temperature detection device is the target detection device.

And fourthly, the first temperature detection device is a candidate detection device. And (3) actual detection temperatures of three detection devices, namely a second temperature detection device, a third temperature detection device and a fourth temperature detection device are measured: and inputting the TO, the TG and the TL into a preset model TO obtain a first predicted temperature Ta of the first temperature detection device. When the absolute value of the (TI-Ta) is less than or equal to the first difference threshold, the first temperature detection device is not in fault; and when the absolute value of the (TI-Ta) is larger than the first difference threshold value, the first temperature detection device is indicated to be in failure, namely the first temperature detection device is the target detection device.

In this embodiment, during the operation of the air conditioning equipment, the (N-1) actual detected temperatures of the (N-1) temperature detection devices in the N temperature detection devices are input to the preset model, and the detected temperature of any one temperature detection device in the N temperature detection devices is predicted to obtain the first predicted temperature of each temperature detection device. And determining a target detection device based on the difference between each first predicted temperature and the corresponding actual detection temperature.

The mode of sequentially determining the first predicted temperature of each temperature detection device based on the preset model to determine the target detection device can predict the micro fault deviation within the precision range of the temperature detection device, so that the fault detection of the determined target detection device is more accurate, and the fault judgment precision of the air conditioning equipment is improved.

As an implementation manner, with respect to the implementation scenario of the step S603, the controller may further perform the following steps: and when the absolute value of the difference between the first predicted temperature of each candidate detection device and the actual detection temperature of each candidate detection device is smaller than a first difference threshold, controlling the air conditioning equipment to continuously operate according to the first working parameter.

In this implementation manner, if the difference between the actual detected temperature of each temperature detection device and the corresponding first predicted temperature is smaller than the first difference threshold, it indicates that no fault device exists in each temperature detection device, and the air conditioning equipment continues to operate according to the original operating parameters (i.e., the first operating parameters).

As an implementation manner of the target preset temperature, with reference to fig. 6 and as shown in fig. 7, the controller may determine the target predicted temperature by using a preset model method, which includes the following specific implementation steps:

step S701, when the absolute value of the difference between the first predicted temperature and the actual detection temperature of the target detection device is greater than or equal to a first difference threshold and smaller than a second difference threshold; and inputting each actual detection temperature of the temperature prediction device into a preset model to obtain the target prediction temperature of the target detection device.

Before step S701 is performed, the target temperature detection device determined based on the implementation of fig. 5 determines the first predicted temperature by using a preset model, and then determines a range to which the range of the first predicted temperature belongs, that is, a threshold range formed by the first difference threshold and the second difference threshold.

Based on the above, if the absolute value of the difference between the first predicted temperature and the actual detected temperature of the target detection device is greater than or equal to the first difference threshold and less than or equal to the second difference threshold, which indicates that each temperature coefficient of the preset model meets the prediction accuracy requirement, the target predicted temperature is predicted based on each actual detected temperature of the preset model and the temperature prediction device.

As another implementation manner of the target preset temperature, with reference to fig. 6 and as shown in fig. 8, the specific implementation steps are as follows:

step S801, when the absolute value of the difference between the first predicted temperature and the actual detected temperature of the target detection device is greater than or equal to a second difference threshold; and correcting each temperature coefficient in the preset model by using the stored historical actual detection temperature of the air conditioning equipment to obtain the corrected preset model.

Step S802, inputting each actual detected temperature of a temperature detection device other than the target detection device among the plurality of temperature detection devices into the corrected preset model to obtain a target predicted temperature of the target detection device.

As a specific implementation scenario, as shown in fig. 9, the air conditioning equipment determines the failed temperature detection device and the determination process of the second operation parameter during the operation process.

Step S901, an identifier of a model of an indoor unit of an operating air conditioning device and a corresponding operation mode are obtained.

Step S902, acquiring four actual detected temperatures of the four temperature parameters in the operation process, and acquiring a preset model in the operation mode.

Four actual detected temperatures of the above four temperature parameters: the air inlet temperature of the indoor heat exchanger, the air outlet temperature of the indoor heat exchanger, the air pipe temperature of the indoor heat exchanger and the liquid pipe temperature of the indoor heat exchanger.

Step S903, sequentially calculating first predicted temperatures of the four temperature parameters according to the preset model and the three temperature parameters, respectively.

Step S904, determining whether the respective first predicted temperature and the corresponding actual detected temperature are greater than or equal to a first difference threshold; if not, the process proceeds to step S905, and if yes, the process proceeds to step S906.

In step S905, the air conditioner is controlled to continue to operate in the operation mode according to the original operation parameter (i.e., the first operation parameter).

In step S906, a temperature sensor in which the first predicted temperature and the actual detected temperature are greater than or equal to the first difference threshold is used as the target temperature detection means.

Step S907, judging whether the first predicted temperature of the target temperature sensor is greater than a second difference threshold value; if not, go to step S908; if so, the flow proceeds to step S909.

In step S908, the second operating parameter is determined according to the actual temperatures detected by the three temperature detection devices other than the prediction model and the target temperature detection device.

In step S909, the temperature coefficient of the prediction model is corrected to obtain a corrected prediction model.

In step S910, a second operation parameter is determined according to the corrected prediction model and the actual detected temperatures of the three temperature detection devices other than the target temperature detection device.

And step S911, controlling the air conditioning equipment to operate according to the second working parameter.

As another specific implementation scenario, in the case that it is determined that a temperature sensor of the air conditioning equipment is faulty, a backup mode operation is started, where the backup mode is operated according to the second operation parameter. The specific implementation scenario is as follows:

(1) And when detecting that one temperature sensor fails, starting the air conditioning equipment in a backup mode.

(2) Sending prompt information to a user to prompt the temperature sensor to have a fault; and sending a request for whether to continue the backup mode operation.

(3) And the user inquires the spare part condition of the temperature detection device in the spare part library and determines whether to continue operating the backup mode according to the spare part condition.

(4) If the corresponding spare part exists, the user does not allow the backup mode to be executed, the air conditioning equipment stops running to replace the spare part, and the maintenance of the failed temperature detection device is completed; if no corresponding spare part exists, the user allows the backup mode to be executed, and the air conditioning equipment continues to operate the mode.

It can be seen that the foregoing describes the solution provided by the embodiments of the present application primarily from a methodological perspective. In order to implement the functions, the embodiments of the present application provide corresponding hardware structures and/or software modules for performing the respective functions. Those of skill in the art will readily appreciate that the various illustrative modules and algorithm steps described in connection with the embodiments disclosed herein may be implemented as hardware or combinations of hardware and computer software. Whether a function is performed in hardware or computer software drives hardware depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.

In the embodiment of the present application, the controller may be divided into function modules according to the method example, for example, each function module may be divided corresponding to each function, or two or more functions may be integrated into one processing module. The integrated module can be realized in a hardware mode, and can also be realized in a software functional module mode. Optionally, the division of the modules in the embodiment of the present application is schematic, and is only a logic function division, and there may be another division manner in actual implementation.

The embodiment of the application also provides a hardware structure schematic diagram of the controller. As shown in fig. 10, the controller 103 includes a processor 401, and optionally, a memory 402 and a communication interface 403 connected to the processor 401. The processor 401, memory 402 and communication interface 403 are connected by a bus 404.

The processor 401 may be a Central Processing Unit (CPU), a general purpose processor Network (NP), a Digital Signal Processor (DSP), a microprocessor, a microcontroller, a Programmable Logic Device (PLD), or any combination thereof. The processor 401 may also be any other means having a processing function such as a circuit, device or software module. The processor 401 may also include a plurality of CPUs, and the processor 401 may be a single-core (single-CPU) processor or a multi-core (multi-CPU) processor. A processor herein may refer to one or more devices, circuits, or processing cores that process data, such as computer program instructions.

The memory 402 may be a read-only memory (ROM) or other type of static memory device that can store static information and instructions, a Random Access Memory (RAM) or other type of dynamic memory device that can store information and instructions, an electrically erasable programmable read-only memory (EEPROM), a compact disk read-only memory (CD-ROM) or other optical disk storage, optical disk storage (including compact disk, laser disk, optical disk, digital versatile disk, blu-ray disk, etc.), magnetic disk storage or other magnetic storage devices, or any other medium that can be used to carry or store desired program code in the form of instructions or data structures and that can be accessed by a computer, although the embodiments of the present application are not limited in this respect. The memory 402 may be separate or integrated with the processor 401. The memory 402 may contain, among other things, computer program code. The processor 401 is configured to execute the computer program code stored in the memory 402, so as to implement the control method provided by the embodiment of the present application.

Communication interface 403 may be used for communicating with other devices or communication networks (e.g., ethernet, radio Access Network (RAN), wireless Local Area Networks (WLAN), etc.).

The bus 404 may be a Peripheral Component Interconnect (PCI) bus, an Extended Industry Standard Architecture (EISA) bus, or the like. The bus 404 may be divided into an address bus, a data bus, a control bus, and the like. For ease of illustration, only one thick line is shown in FIG. 10, but this is not intended to represent only one bus or type of bus.

The embodiment of the application also provides a computer-readable storage medium, which comprises computer execution instructions, and when the computer execution instructions run on a computer, the computer is enabled to execute the fault processing method of the air conditioning equipment provided by the embodiment.

The embodiment of the application also provides a computer program product containing computer execution instructions, and when the computer program product runs on a computer, the computer is enabled to execute the fault processing method of the air conditioning equipment provided by the embodiment.

In the above embodiments, the implementation may be wholly or partially realized by software, hardware, firmware, or any combination thereof. When implemented using a software program, it may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer-executable instructions. The processes or functions according to the embodiments of the present application are generated in whole or in part when the computer-executable instructions are loaded and executed on a computer. The computer may be a general purpose computer, a special purpose computer, a network of computers, or other programmable device. The computer executable instructions may be stored on a computer readable storage medium or transmitted from one computer readable storage medium to another, for example, the computer executable instructions may be transmitted from one website, computer, server, or data center to another website, computer, server, or data center via wire (e.g., coaxial cable, fiber optic, digital Subscriber Line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.). Computer-readable storage media can be any available media that can be accessed by a computer or can comprise one or more data storage devices, such as servers, data centers, and the like, that can be integrated with the media. The usable medium may be a magnetic medium (e.g., floppy disk, hard disk, magnetic tape), an optical medium (e.g., DVD), or a semiconductor medium (e.g., solid State Disk (SSD)), among others.

While the present application has been described in connection with various embodiments, other variations to the disclosed embodiments can be understood and effected by those skilled in the art in practicing the claimed application, from a review of the drawings, the disclosure, and the appended claims. In the claims, the word "comprising" does not exclude other elements or steps, and the word "a" or "an" does not exclude a plurality. A single processor or other unit may fulfill the functions of several items recited in the claims. The mere fact that certain measures are recited in mutually different dependent claims does not indicate that a combination of these measures cannot be used to advantage.

Although the present application has been described in conjunction with specific features and embodiments thereof, it will be evident that various modifications and combinations can be made thereto without departing from the spirit and scope of the application. Accordingly, the specification and drawings are merely illustrative of the present application as defined in the appended claims and are intended to cover any and all modifications, variations, combinations, or equivalents within the scope of the application. It will be apparent to those skilled in the art that various changes and modifications may be made in the present application without departing from the spirit and scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is intended to include such modifications and variations as well.

The above description is only an embodiment of the present application, but the scope of the present application is not limited thereto, and any changes or substitutions within the technical scope disclosed in the present application should be covered within the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. An air conditioning apparatus, comprising:

an outdoor unit including an outdoor heat exchanger;

the indoor unit comprises an indoor heat exchanger, and the indoor heat exchanger is connected with the outdoor heat exchanger through a pipeline;

the temperature detection assembly comprises a plurality of temperature detection devices arranged on the indoor unit and is used for detecting the following two or more temperature parameters: the air inlet temperature of the indoor heat exchanger, the air outlet temperature of the indoor heat exchanger, the air pipe temperature of the indoor heat exchanger and the liquid pipe temperature of the indoor heat exchanger;

the controller is connected with the indoor unit and the temperature detection assembly;

the controller is configured to:

determining a target temperature detection device with a fault according to a plurality of actual detection temperatures of the plurality of temperature detection devices in the process that the air conditioning equipment operates according to a first working parameter; the target temperature detection device is any one of the plurality of temperature detection devices;

predicting a target predicted temperature of the target temperature detection device according to the actual detected temperature of the temperature prediction device; the temperature predicting device is a temperature detecting device except the target temperature detecting device in the plurality of temperature detecting devices;

obtaining a second working parameter according to the actual detection temperature and the target prediction temperature of the temperature prediction device;

and controlling the air conditioning equipment to operate according to the second working parameter.

2. The air conditioning apparatus according to claim 1, wherein the temperature detection devices of the plurality of temperature detection devices correspond one-to-one to preset temperature ranges; the controller is configured to execute the determining of the target temperature detection device having a fault according to a plurality of actual detected temperatures of the plurality of temperature detection devices, and comprises:

and determining the temperature detection device of which the actual detection temperature is out of the preset temperature range from the plurality of temperature detection devices as the target detection device.

3. The air conditioning apparatus of claim 2, wherein the controller is further configured to perform:

sequentially selecting any one temperature detection device from the plurality of temperature detection devices as a candidate detection device;

inputting each actual detection temperature of temperature detection devices except for the candidate detection device in the plurality of temperature detection devices into a preset model to obtain a first predicted temperature of the candidate detection device;

when the absolute value of the difference between the first predicted temperature and the actual detected temperature of the candidate detection device is greater than or equal to a first difference threshold, regarding the candidate detection device as the target detection device; the preset model is a relational equation formed by summing products of the temperature parameters of the plurality of temperature detection devices and the temperature coefficients corresponding to the temperature parameters and preset values.

4. The air conditioner apparatus of claim 3, wherein the controller is configured to perform the predicting of the target predicted temperature of the target temperature detecting device based on the actual detected temperature of the temperature predicting device, including:

when the absolute value of the difference between the first predicted temperature and the actual detected temperature of the target detection device is greater than or equal to the first difference threshold and less than a second difference threshold; and inputting each actual detection temperature of the temperature prediction device into the preset model to obtain the target prediction temperature of the target detection device.

5. The air conditioning apparatus of claim 4, wherein the controller is further configured to:

when the absolute value of the difference between the first predicted temperature and the actual detected temperature of the target detection device is greater than or equal to the second difference threshold; correcting each temperature coefficient in the preset model by using the stored historical actual detection temperature of the air conditioning equipment to obtain the corrected preset model;

and inputting each actual detection temperature of the temperature prediction device into the corrected preset model to obtain the target prediction temperature of the target detection device.

6. The air conditioning apparatus according to claim 3, wherein the controller is configured to perform the selection of any one of the plurality of temperature detection devices as a candidate detection device, including:

summing products of the actual detection temperatures of the plurality of temperature detection devices and the corresponding temperature coefficients to obtain temperature influence values;

and under the condition that the absolute value of the difference between the temperature influence value and the preset value is larger than a third difference threshold value, selecting any one temperature detection device from the plurality of temperature detection devices as a candidate detection device.

7. The air conditioning apparatus of claim 6, wherein the controller is further configured to:

and controlling the air conditioning equipment to continuously operate according to the first working parameter under the condition that the absolute value of the difference value between the temperature influence value and the preset value is less than or equal to a third difference threshold value.

8. The air conditioner apparatus of claim 3, wherein the controller is further configured to perform:

and when the absolute value of the difference between the first predicted temperature of each candidate detection device and the actual detected temperature of each candidate detection device is smaller than the first difference threshold, controlling the air conditioning equipment to continuously operate according to the first working parameter.

9. The air conditioning apparatus of any of claims 1-8, wherein the controller is further configured to:

responding to a starting-up operation instruction executed by a user, wherein the starting-up operation instruction comprises indication information indicating the target temperature detection device, and determining the target temperature detection device according to the indication information;

predicting a target predicted temperature of the target temperature detection device according to the actual detected temperature of the temperature prediction device;

10. A fault handling method of an air conditioning apparatus, characterized by comprising:

determining a target temperature detection device with a fault according to a plurality of actual detection temperatures of a plurality of temperature detection devices in the process that the air conditioning equipment operates according to a first working parameter; the target temperature detection device is any one of the plurality of temperature detection devices;

controlling the air conditioning equipment to operate according to the second working parameter;

wherein the temperature detection devices are used for detecting the following two or more temperature parameters: the air inlet temperature of the indoor heat exchanger, the air outlet temperature of the indoor heat exchanger, the air pipe temperature of the indoor heat exchanger and the liquid pipe temperature of the indoor heat exchanger.