Air conditioner with multiple internal pipes and temperature sensing packages, abnormality detection method and storage medium

Abstract

The present application relates to the field of air conditioning technology, and specifically to an air conditioner with multiple internal pipe temperature sensors, an abnormality detection method and a storage medium, including: a compressor, a four-way valve, an outdoor heat exchanger, an electronic expansion valve, an indoor heat exchanger and a low-pressure sensor; wherein at least two internal pipe temperature sensors are installed in the indoor heat exchanger, and an inner ring temperature sensor is installed on the mainboard of the air conditioner. The present application collects data through at least two internal pipe temperature sensors, combines the low-pressure sensor information with the preset detection rules for comparative analysis, detects whether the air conditioner is abnormal, and the detection result is more accurate. The air conditioner can be processed accordingly according to the detection result, thereby improving the reliability and comfort of the air conditioner.

Description

Technical Field

[0001] The present application relates to the technical field of air conditioning design, and in particular to an air conditioner with multiple internal unit pipeline temperature sensing packages, an abnormality detection method and a storage medium. Background Art

[0002] The indoor unit of a split air conditioner generally has only one pipe temperature sensor, which is the only sensor for detecting the state of the refrigerant. The selection of its position and the setting of its parameters have an important impact on the reliability, comfort and even performance of the air conditioner.

[0003] During the development process, the correct selection of the position of the indoor unit pipe temperature sensor (generally, the position is near the middle of the refrigerant flow path) can indicate the evaporation temperature of the refrigerant when the air conditioner is cooling, and the condensation temperature of the refrigerant when heating; these two temperatures have an important impact on the cooling and heating performance of the air conditioner, but because thermocouples and other means are often used to monitor multiple temperature points during the development process, the indoor unit pipe temperature sensor is not the only basis for determining performance during the development process. However, for the reliability test during the development process, the selection of the indoor unit pipe temperature sensor is particularly important, which at least involves reliability tests such as "minimum operation refrigeration, freezing and dripping, fluorine deficiency protection, valve blockage protection, high temperature protection, and defrosting experiments". However, these experiments have different requirements for the position of the indoor unit pipe temperature sensor, and a single indoor unit pipe temperature sensor often cannot take both into account well, which affects the reliability and comfort of the air conditioner.

[0004] In actual user use, a single indoor pipe temperature sensor has hysteresis and is prone to misjudgment or cannot accurately distinguish the type of air conditioner failure, which will cause great trouble to user use and after-sales maintenance. Moreover, a single indoor pipe temperature sensor cannot take into account the comfort requirements of cooling and heating, which is very unfavorable to improving user experience. Summary of the invention

[0005] In response to the above problems, the present application provides an air conditioner with multiple indoor pipe temperature sensors, an abnormality detection method and a storage medium, which solves the technical problem in the related art that a single indoor pipe temperature sensor affects the reliability and comfort of the air conditioner.

[0006] In a first aspect, the present application provides an air conditioner with multiple internal unit pipeline temperature sensing packages, the air conditioner comprising:

[0007] Compressor, four-way valve, outdoor heat exchanger, electronic expansion valve, indoor heat exchanger and low-pressure sensor;

[0008] Among them, at least two indoor pipe temperature sensing packages are installed in the indoor heat exchanger, and an inner ring temperature sensing package is installed on the mainboard of the air conditioner.

[0009] In some embodiments, two indoor pipe temperature sensing bag air conditioners are installed in the indoor heat exchanger.

[0010] In some embodiments, the first indoor unit pipeline temperature sensor in the indoor heat exchanger is installed at the refrigerant inlet position on the refrigerant flow path in the cooling flow direction; the second indoor unit pipeline temperature sensor in the indoor heat exchanger is installed at the refrigerant inlet position on the refrigerant flow path in the heating flow direction.

[0011] In some embodiments, the first indoor unit pipeline temperature sensing package and the second indoor unit pipeline temperature sensing package are respectively placed in front and rear of the evaporator of the indoor heat exchanger.

[0012] In a second aspect, a method for detecting abnormality of an air conditioner with multiple internal unit pipeline temperature sensing packages is applied to the air conditioner described in the first aspect, the method comprising:

[0013] When the air conditioner is turned on, the temperature of the multiple internal pipe temperature sensing packages and the temperature of the inner ring temperature sensing package in the air conditioner are obtained;

[0014] Acquire the temperature of multiple internal pipe temperature sensing packages, the temperature of the inner ring temperature sensing package and the temperature of the low pressure sensor in the air conditioner at preset time intervals;

[0015] Based on the temperatures of multiple indoor pipe temperature sensing bags and the temperature of the inner ring temperature sensing bag obtained when the air conditioner is turned on, as well as the temperatures of multiple indoor pipe temperature sensing bags, the temperature of the inner ring temperature sensing bag and the temperature of the low-pressure sensor obtained each time a preset time interval is reached, it is detected whether there is an abnormality according to preset detection rules to obtain a detection result.

[0016] In some embodiments, if the air conditioner includes two internal pipe temperature sensing packages, when the air conditioner is turned on, obtaining the temperatures of multiple internal pipe temperature sensing packages and the temperature of the inner ring temperature sensing package in the air conditioner includes:

[0017] When the air conditioner is turned on, the temperature measured by the first indoor unit pipe temperature sensing package is obtained, the temperature measured by the second indoor unit pipe temperature sensing package is obtained, and the temperature measured by the inner ring temperature sensing package is obtained.

[0018] In some embodiments, the step of obtaining the temperature of multiple internal pipe temperature sensing packages, the temperature of the inner ring temperature sensing package, and the temperature of the low pressure sensor in the air conditioner at preset time intervals includes:

[0019] From the moment the air conditioner is turned on, every time the preset time interval is reached, the temperature measured by the first indoor unit pipe temperature sensing package is obtained, the temperature measured by the second indoor unit pipe temperature sensing package is obtained, the temperature measured by the inner ring temperature sensing package is obtained, and the temperature measured by the low pressure sensor is obtained.

[0020] In some embodiments, the method of detecting whether there is an abnormality according to the temperatures of the multiple internal machine pipeline temperature sensing packages and the temperature of the inner ring temperature sensing package obtained when the air conditioner is turned on, and the temperatures of the multiple internal machine pipeline temperature sensing packages, the temperature of the inner ring temperature sensing package and the temperature of the low pressure sensor obtained each time a preset time interval is reached, and obtaining the detection result includes:

[0021] If T 内环(t判) ≤T 内环(t0) -2, it is determined that the air conditioner operates normally within the current preset time interval;

[0022] If T 内环(t判) >T 内环(t0) -2, T 内1(t判) ≤T 内1(t0) -2 and T 内2(t判) ≤T 内2(t0) -2, it is determined that the air conditioner operates normally but has insufficient cooling capacity during the current preset time interval;

[0023] If T 内环(t判) ≤T 内环(t0) -2, T 内1(t判) ≤T 内1(t0) -2 and T 内2(t判) >T 内2(t0) -2, it is determined that the air conditioning cooling capacity is seriously insufficient within the current preset time interval. After another preset time interval, if T 内2(t判) ≤T 内2(t0) -2, it is determined that there is no welding blockage in the air conditioner. If T 内2(t判) >T 内2(t0) -2, it is determined that there is welding or dirt blockage at the rear of the evaporator;

[0024] If T 内环(t判) >T 内环(t0) -2, T 内1(t判) >T 内1(t0) -2 and T 内2(t判) ≤T 内2(t0) -2, it is determined that the air conditioning refrigeration capacity is seriously insufficient within the current preset time interval, and the compressor operating frequency is increased. After another preset time interval, if T 内1(t判) ≤T 内1(t0) -2, it is determined that there is no welding blockage in the air conditioner. If T 内1(t判) >T 内1(t0) -2, it is determined that there is welding or dirt blockage at the front of the evaporator;

[0025] If T 内环(t判) >T 内环(t0) -2, T 内1(t判) >T 内1(t0) -2, T 内2(t判) >T 内2(t0)-2, and T 内1(t判) and T 内2(t判) Average<T 低压(t判) +T 补 +3, it is judged that the compressor frequency is too low;

[0026] If T 内环(t判) >T 内环(t0) -2, T 内1(t判) >T 内1(t0) -2, T 内2(t判) >T 内2(t0) -2, and T 内1(t判) and T 内2(t判) Average ≥ T 低压(t判) +T 补 +3, it is judged that the air conditioner has too little refrigerant or the valve is blocked;

[0027] Among them, the temperature of the first indoor unit pipeline temperature sensor is T 内1 , the temperature of the first indoor unit pipeline temperature sensor T 内2 , the inner ring temperature sensing package senses the ambient temperature T 内环 , the refrigerant saturation temperature T corresponding to the low pressure sensor 低压 , Compensation temperature T from evaporator to air inlet 补 , t is the current time when the preset time interval is reached, and t0 is the time when the air conditioner is turned on.

[0028] In a third aspect, a storage medium stores a computer program that can be executed by one or more processors and can be used to implement the method for detecting abnormalities in an air conditioner with multiple internal unit pipeline temperature sensing packages as described in the second aspect above.

[0029] In a fourth aspect, an electronic device comprises a memory and a processor, wherein a computer program is stored in the memory, and the memory and the processor are communicatively connected with each other, and when the computer program is executed by the processor, the abnormality detection method of the air conditioner with multiple internal unit pipeline temperature sensing packages as described in the second aspect above is executed.

[0030] The present application provides an air conditioner with multiple internal pipe temperature sensing packages, an abnormality detection method and a storage medium, comprising: a compressor, a four-way valve, an outdoor heat exchanger, an electronic expansion valve, an indoor heat exchanger and a low-pressure sensor; wherein at least two internal pipe temperature sensing packages are installed in the indoor heat exchanger, and an inner ring temperature sensing package is installed on the mainboard of the air conditioner. The present application collects data through at least two internal pipe temperature sensing packages, combines the low-pressure sensor information with the preset detection rules for comparative analysis, detects whether the air conditioner is abnormal, and the detection result is more accurate. The air conditioner can process accordingly according to the detection result, thereby improving the reliability and comfort of the air conditioner. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0032] Figure 1 A schematic diagram of the structure of a multi-inner-unit pipeline temperature-sensing bag air conditioner provided in an embodiment of the present application;

[0033] Figure 2 A schematic diagram of the optimal positions of the first indoor unit pipeline temperature sensing package and the second indoor unit pipeline temperature sensing package provided in the embodiment of the present application;

[0034] Figure 3 A flowchart of a method for detecting abnormality of an air conditioner with multiple internal unit pipeline temperature sensing packages provided in an embodiment of the present application;

[0035] Figure 4 A connection block diagram of an electronic device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0036] The following will describe the implementation methods of the present application in detail with reference to the accompanying drawings and embodiments, so that the implementation process of how the present application applies technical means to solve technical problems and achieve corresponding technical effects can be fully understood and implemented accordingly. The embodiments of the present application and the various features in the embodiments can be combined with each other without conflict, and the technical solutions formed are all within the scope of protection of the present application.

[0037] From the background technology, it can be seen that the reliability tests involving "minimum operating refrigeration, freezing and dripping, fluorine deficiency protection, valve blockage protection, high temperature protection, defrosting experiments" have different requirements for the position of the indoor unit pipe temperature sensor. A single indoor unit pipe temperature sensor often cannot take both into account well, which affects the reliability and comfort of the air conditioner.

[0038] In view of this, the present application provides an air conditioner with multiple internal unit pipeline temperature sensors, an abnormality detection method and a storage medium, which solves the technical problem in the related art that a single internal unit pipeline temperature sensor affects the reliability and comfort of the air conditioner.

[0039] Embodiment 1

[0040] Figure 1 A schematic diagram of a multi-inner pipe temperature sensing package air conditioner provided in an embodiment of the present application is shown in FIG. Figure 1 As shown, the air conditioner includes:

[0041] Compressor, four-way valve, outdoor heat exchanger, electronic expansion valve, indoor heat exchanger and low-pressure sensor;

[0042] Among them, at least two indoor pipe temperature sensing packages are installed in the indoor heat exchanger, and an inner ring temperature sensing package is installed on the mainboard of the air conditioner.

[0043] Specifically, taking refrigeration as an example, after the refrigerant is compressed into high-temperature and high-pressure gas by the compressor, it passes through the four-way valve and reaches the outdoor heat exchanger to release heat and condense into a normal-temperature and high-pressure liquid, and then passes through the electronic expansion valve to throttle into low-temperature and low-pressure wet steam, reaches the indoor heat exchanger to absorb heat and evaporate into a low-temperature and low-pressure gas, and then flows back to the compressor through the four-way valve. There is a low-pressure sensor at the compressor inlet and an exhaust temperature sensor at the outlet; an outer pipe temperature sensor is welded on the outdoor heat exchanger pipeline, and an outer ring temperature sensor is fixed nearby; the first indoor pipe temperature sensor and the second indoor pipe temperature sensor are welded on the indoor heat exchanger pipeline, and the inner ring temperature sensor is installed on the indoor mainboard of the air conditioner. The indoor mainboard and the outdoor mainboard receive the feedback signals of these sensors respectively, thereby adjusting the compressor frequency and the opening of the electronic expansion valve, so that the system reaches the optimal point (that is, the best balance point of capacity and energy efficiency).

[0044] In some embodiments, two indoor pipe temperature sensing bag air conditioners are installed in the indoor heat exchanger.

[0045] In some embodiments, the first indoor unit pipeline temperature sensor in the indoor heat exchanger is installed at the refrigerant inlet position on the refrigerant flow path in the cooling flow direction; the second indoor unit pipeline temperature sensor in the indoor heat exchanger is installed at the refrigerant inlet position on the refrigerant flow path in the heating flow direction.

[0046] In some embodiments, the first indoor unit pipeline temperature sensing package and the second indoor unit pipeline temperature sensing package are respectively placed in front and rear of the evaporator of the indoor heat exchanger.

[0047] It should be noted that in order to take into account the reliability of air conditioning and the comfort of cooling and heating, and to make the air conditioning system reach the optimal point, it is necessary to select the best position of the first indoor unit pipeline temperature sensor and the second indoor unit pipeline temperature sensor. Due to the minimum cooling and freezing dripping during cooling, in order to enter the anti-freezing protection in time and avoid excessive frost on the evaporator, the temperature of the indoor unit pipeline temperature sensor is required to be low during operation, which requires the indoor unit pipeline temperature sensor to be located closer to the inlet of the flow path. Therefore, the first indoor unit pipeline temperature sensor should be placed in the middle of the flow path when the flow path is in the cooling direction; due to the high temperature protection in time during heating and avoid excessive system pressure, the temperature of the indoor unit pipeline temperature sensor is required to be higher during operation, which requires the indoor unit pipeline temperature sensor to be located closer to the inlet of the flow path; therefore, the second indoor unit pipeline temperature sensor should be placed in the middle of the flow path when the flow path is in the heating direction; and because the heat exchange conditions of the front and rear parts of the evaporator are quite different, the first indoor unit pipeline temperature sensor and the second indoor unit pipeline temperature sensor should be placed in the front and rear parts of the evaporator respectively. In summary, the best positions for the first indoor unit pipeline temperature sensing package and the second indoor unit pipeline temperature sensing package on the evaporator flow path are as follows: Figure 2 After the position is determined, the reliability test of cooling can be determined solely by the feedback signal of the first indoor unit pipe temperature sensor package, and the reliability test of heating can be determined solely by the feedback signal of the second indoor unit pipe temperature sensor package.

[0048] In some embodiments, a capillary tube is used in the air conditioner instead of an electronic expansion valve, which can save costs.

[0049] In some embodiments, the compressor used in the air conditioner is a fixed-frequency compressor.

[0050] The embodiment of the present application discloses an air conditioner with multiple internal pipe temperature sensing packages, including: a compressor, a four-way valve, an outdoor heat exchanger, an electronic expansion valve, an indoor heat exchanger and a low-pressure sensor; wherein at least two internal pipe temperature sensing packages are installed in the indoor heat exchanger, and an inner ring temperature sensing package is installed on the mainboard of the air conditioner. The present application collects data through at least two internal pipe temperature sensing packages, combines the low-pressure sensor information with the preset detection rules for comparative analysis, detects whether the air conditioner is abnormal, and the detection result is more accurate. The air conditioner can process accordingly according to the detection result, thereby improving the reliability and comfort of the air conditioner.

[0051] Embodiment 2

[0052] Based on the multi-internal unit pipeline temperature sensing bag air conditioner disclosed in the above embodiment of the present invention, Figure 3 Specifically disclosed is an abnormality detection method applied to the multi-internal unit pipeline temperature sensing bag air conditioner.

[0053] like Figure 3As shown, the embodiment of the present invention discloses a method for detecting abnormality of an air conditioner with multiple internal unit pipeline temperature sensing packages, which is applied to the air conditioner described in the above embodiment 1, and the method comprises:

[0054] S301, when the air conditioner is turned on, obtaining the temperature of multiple indoor pipe temperature sensing packages and the temperature of the inner ring temperature sensing package in the air conditioner;

[0055] S302, obtaining the temperature of multiple indoor pipe temperature sensing packages, the temperature of the inner ring temperature sensing package and the temperature of the low pressure sensor in the air conditioner at preset time intervals;

[0056] S303, based on the temperatures of multiple indoor pipe temperature sensing bags and the temperature of the inner ring temperature sensing bag obtained when the air conditioner is turned on, as well as the temperatures of multiple indoor pipe temperature sensing bags, the temperature of the inner ring temperature sensing bag and the temperature of the low-pressure sensor obtained each time a preset time interval is reached, detect whether there is an abnormality according to preset detection rules to obtain a detection result.

[0057] In some embodiments, if the air conditioner includes two internal pipe temperature sensing packages, when the air conditioner is turned on, obtaining the temperatures of multiple internal pipe temperature sensing packages and the temperature of the inner ring temperature sensing package in the air conditioner includes:

[0058] When the air conditioner is turned on, the temperature measured by the first indoor unit pipe temperature sensing package is obtained, the temperature measured by the second indoor unit pipe temperature sensing package is obtained, and the temperature measured by the inner ring temperature sensing package is obtained.

[0059] In some embodiments, the step of obtaining the temperature of multiple internal pipe temperature sensing packages, the temperature of the inner ring temperature sensing package, and the temperature of the low pressure sensor in the air conditioner at preset time intervals includes:

[0060] From the moment the air conditioner is turned on, every time the preset time interval is reached, the temperature measured by the first indoor unit pipe temperature sensing package is obtained, the temperature measured by the second indoor unit pipe temperature sensing package is obtained, the temperature measured by the inner ring temperature sensing package is obtained, and the temperature measured by the low pressure sensor is obtained.

[0061] In some embodiments, the method of detecting whether there is an abnormality according to the temperatures of the multiple internal machine pipeline temperature sensing packages and the temperature of the inner ring temperature sensing package obtained when the air conditioner is turned on, and the temperatures of the multiple internal machine pipeline temperature sensing packages, the temperature of the inner ring temperature sensing package and the temperature of the low pressure sensor obtained each time a preset time interval is reached, and obtaining the detection result includes:

[0062] If T 内环(t判) ≤T 内环(t0) -2, it is determined that the air conditioner operates normally within the current preset time interval;

[0063] It should be noted that the air conditioner operates normally and no comfort adjustment is required.

[0064] If T 内环(t判) >T 内环(t0) -2, T 内1(t判) ≤T 内1(t0) -2 and T 内2(t判) ≤T 内2(t0) -2, it is determined that the air conditioner operates normally but has insufficient cooling capacity during the current preset time interval;

[0065] It should be noted that when the above conditional formula is met, it means that the ambient temperature cannot be lowered normally (or the lowering speed is too slow) within the current preset time interval, but the temperature of the indoor pipe can be lowered normally, and the air conditioner has cooling capacity, but the cooling capacity is insufficient. In this case, it is judged that the air conditioner is operating normally but the cooling capacity is insufficient, and the air conditioner compressor frequency increases (generally 5Hz, and the increase value can be set each time according to actual conditions), and it is re-detected and judged at the next preset time interval until the air conditioner is operating normally.

[0066] If T 内环(t判) ≤T 内环(t0) -2, T 内1(t判) ≤T 内1(t0) -2 and T 内2(t判) >T 内2(t0) -2, it is determined that the air conditioning cooling capacity is seriously insufficient within the current preset time interval. After another preset time interval, if T 内2(t判) ≤T 内2(t0) -2, it is determined that there is no welding blockage in the air conditioner. If T 内2(t判) >T 内2(t0) -2, it is determined that there is welding or dirt blockage at the rear of the evaporator;

[0067] It should be noted that when the above conditional formula is met, it means that the ambient temperature cannot be normally reduced (or the reduction speed is too slow) within the current preset time interval, and the cooling capacity of the flow path behind the indoor evaporator is too small (there may be welding blockage), and the air conditioning cooling capacity is seriously insufficient. Increase the compressor operating frequency. After another judgment cycle, if T 内2(t判) ≤T 内2(t0) -2, it means that there is no welding blockage in the internal unit. If T 内2(t判) >T 内2(t0) -2, indicating that when the compressor frequency is increased, the rear part of the evaporator still has no cooling capacity, and it is determined that there is welding or dirt blockage at the rear part of the evaporator, and the machine is shut down and the corresponding code is displayed on the indoor unit display. The indoor unit display is placed behind the indoor unit panel, and the code display area is the area that displays the temperature during normal operation.

[0068] If T 内环(t判) >T 内环(t0) -2, T 内1(t判) >T 内1(t0) -2 and T内2(t判) ≤T 内2(t0) -2, it is determined that the air conditioning refrigeration capacity is seriously insufficient within the current preset time interval, and the compressor operating frequency is increased. After another preset time interval, if T 内1(t判) ≤T 内1(t0) -2, it is determined that there is no welding blockage in the air conditioner. If T 内1(t判) >T 内1(t0) -2, it is determined that there is welding or dirt blockage at the front of the evaporator;

[0069] It should be noted that when the above conditional formula is met, it means that the ambient temperature cannot be lowered normally (or the lowering speed is too slow) within the current preset time interval, and the cooling capacity of the flow path in front of the indoor evaporator is too small (there may be welding blockage), and the air conditioning cooling capacity is seriously insufficient. Increase the compressor operating frequency. After another judgment cycle, if 内1(t判) ≤T 内1(t0) -2, it means that there is no welding blockage in the internal unit. If T 内1(t判) >T 内1(t0) -2, indicating that the rear part of the evaporator still has no cooling capacity when the compressor frequency is increased, and it is determined that there is welding or dirt blockage in the front part of the evaporator, and the machine is shut down and the corresponding code is displayed on the indoor unit display.

[0070] If T 内环(t判) >T 内环(t0) -2, T 内1(t判) >T 内1(t0) -2, T 内2(t判) >T 内2(t0) -2, and T 内1(t判) and T 内2(t判) Average<T 低压(t判) +T 补 +3, it is judged that the compressor frequency is too low;

[0071] It should be noted that when the above conditional expression is met, it means that the air conditioner refrigeration capacity is small within the current preset time interval, and the evaporator is not in a large overheating state, then it is considered that the compressor frequency is too low, and the air conditioner increases the compressor frequency.

[0072] If T 内环(t判) >T 内环(t0) -2, T 内1(t判) >T 内1(t0) -2, T 内2(t判) >T 内2(t0) -2, and T 内1(t判) and T 内2(t判) Average ≥ T 低压(t判) +T 补 +3, it is judged that the air conditioner has too little refrigerant or the valve is blocked;

[0073] It should be noted that when the above conditional formula is met, it means that the air conditioner's refrigeration capacity is small within the current preset time interval, and the evaporator is already in a state of high overheating. It is considered that the air conditioner has too little refrigerant or the valve is blocked, and the air conditioner will shut down and display the corresponding code on the indoor unit display.

[0074] Among them, the temperature of the first indoor unit pipeline temperature sensor is T 内1 , the temperature of the first indoor unit pipeline temperature sensor T 内2 , the inner ring temperature sensing package senses the ambient temperature T 内环 , the refrigerant saturation temperature T corresponding to the low pressure sensor 低压 , Compensation temperature T from evaporator to air inlet 补 , t is the current time when the preset time interval is reached, and t0 is the time when the air conditioner is turned on.

[0075] It should be further explained that at the first preset time interval after the air conditioner is turned on, the collected temperature data at the current moment is compared with the temperature data collected when the air conditioner is turned on to detect abnormalities. At each subsequent preset time interval, the collected temperature data at the current moment is compared with the temperature data collected at the previous interval to detect abnormalities, so as to obtain a detection result of whether an abnormality occurs within a preset interval.

[0076] In some embodiments, the air conditioner uses a fixed-frequency compressor, and the operation of increasing the compressor during the abnormality detection process is eliminated, and the inspection is repeated only after the next preset time interval. If there is no change after repeating for more than a preset number of times, a prompt is issued to the user.

[0077] In summary, the embodiment of the present application provides an abnormality detection method for an air conditioner with multiple internal pipe temperature sensing packages, including: when the air conditioner is turned on, the temperature of multiple internal pipe temperature sensing packages and the temperature of the inner ring temperature sensing package in the air conditioner are obtained; the temperature of multiple internal pipe temperature sensing packages, the temperature of the inner ring temperature sensing package and the temperature of the low-pressure sensor in the air conditioner are obtained at preset time intervals; according to the temperature of the multiple internal pipe temperature sensing packages and the temperature of the inner ring temperature sensing package obtained when the air conditioner is turned on, and the temperature of the multiple internal pipe temperature sensing packages, the temperature of the inner ring temperature sensing package and the temperature of the low-pressure sensor obtained each time the preset time interval is reached, detect whether there is an abnormality according to the preset detection rules, and obtain the detection result. The present application collects data through at least two internal pipe temperature sensing packages, combines the low-pressure sensor information and performs comparative analysis according to the preset detection rules to detect whether the air conditioner is abnormal, and the detection result is more accurate. The air conditioner can be processed accordingly according to the detection result, thereby improving the reliability and comfort of the air conditioner.

[0078] Embodiment 3

[0079] This embodiment also provides a computer-readable storage medium, such as a flash memory, a hard disk, a multimedia card, a card-type memory (for example, an SD or DX memory, etc.), a random access memory (RAM), a static random access memory (SRAM), a read-only memory (ROM), an electrically erasable programmable read-only memory (EEPROM), a programmable read-only memory (PROM), a magnetic memory, a disk, an optical disk, a server, an App application store, etc., on which a computer program is stored. When the computer program is executed by a processor, the method steps of the first embodiment can be implemented, and this embodiment will not be repeated here.

[0080] Embodiment 4

[0081] Figure 4 A connection block diagram of an electronic device 400 provided in an embodiment of the present application, such as Figure 4 As shown, the electronic device 400 may include: a processor 401 , a memory 402 , a multimedia component 403 , an input / output (I / O) interface 404 , and a communication component 405 .

[0082] The processor 401 is used to execute all or part of the steps in the method for detecting abnormality of an air conditioner with multiple internal pipe temperature sensing packages in Example 1. The memory 402 is used to store various types of data, which may include instructions of any application or method in the electronic device, as well as data related to the application.

[0083] The processor 401 can be an application specific integrated circuit (ASIC), a digital signal processor (DSP), a digital signal processing device (DSPD), a programmable logic device (PLD), a field programmable gate array (FPGA), a controller, a microcontroller, a microprocessor or other electronic components, and is used to execute the abnormality detection method of the multi-indoor pipeline temperature sensing package air conditioner in the above-mentioned embodiment 1.

[0084] The memory 402 can be implemented by any type of volatile or non-volatile storage device or a combination thereof, such as static random access memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic storage, flash memory, disk or optical disk.

[0085] The multimedia component 403 may include a screen and an audio component, the screen may be a touch screen, and the audio component is used to output and / or input audio signals. For example, the audio component may include a microphone, and the microphone is used to receive external audio signals. The received audio signal may be further stored in a memory or sent via a communication component. The audio component also includes at least one speaker for outputting audio signals.

[0086] The I / O interface 404 provides an interface between the processor 401 and other interface modules, which may be a keyboard, a mouse, buttons, etc. These buttons may be virtual buttons or physical buttons.

[0087] The communication component 405 is used for wired or wireless communication between the electronic device 400 and other devices. Wireless communication, such as Wi-Fi, Bluetooth, Near Field Communication (NFC), 2G, 3G or 4G, or a combination of one or more of them, so the corresponding communication component 405 can include: Wi-Fi module, Bluetooth module, NFC module.

[0088] In summary, the present application provides an air conditioner with multiple internal pipe temperature sensing packages, an abnormality detection method and a storage medium, including: a compressor, a four-way valve, an outdoor heat exchanger, an electronic expansion valve, an indoor heat exchanger and a low-pressure sensor; wherein at least two internal pipe temperature sensing packages are installed in the indoor heat exchanger, and an inner ring temperature sensing package is installed on the mainboard of the air conditioner. The present application collects data through at least two internal pipe temperature sensing packages, combines the low-pressure sensor information with the preset detection rules for comparative analysis, detects whether the air conditioner is abnormal, and the detection result is more accurate. The air conditioner can process accordingly according to the detection result, thereby improving the reliability and comfort of the air conditioner.

[0089] In the several embodiments provided in the present application, it should be understood that the disclosed method can also be implemented in other ways. The method embodiments described above are merely illustrative.

[0090] It should be noted that, in this article, the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also includes 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 sentence "comprises a ..." does not exclude the presence of other identical elements in the process, method, article or device including the element.

[0091] Although the implementation methods disclosed in this application are as above, the above contents are only the implementation methods adopted for facilitating the understanding of this application, and are not intended to limit this application. Any technician in the technical field to which this application belongs can make any modifications and changes in the form and details of the implementation without departing from the spirit and scope disclosed in this application, but the scope of patent protection of this application shall still be based on the scope defined in the attached claims.

Claims

1. A method for detecting abnormality of an air conditioner with multiple internal pipe temperature sensing packages, characterized in that: Applied to an air conditioner, the air conditioner comprises: a compressor, a four-way valve, an outdoor heat exchanger, an electronic expansion valve, an indoor heat exchanger and a low-pressure sensor; wherein at least two indoor pipe temperature sensing packages are installed in the indoor heat exchanger, and an inner ring temperature sensing package is installed on the mainboard of the air conditioner; The method comprises: When the air conditioner is turned on, the temperature of the multiple internal pipe temperature sensing packages and the temperature of the inner ring temperature sensing package in the air conditioner are obtained; Acquire the temperature of multiple internal pipe temperature sensing packages, the temperature of the inner ring temperature sensing package and the temperature of the low pressure sensor in the air conditioner at preset time intervals; According to the temperatures of the multiple indoor pipe temperature sensing packages and the temperature of the inner ring temperature sensing package obtained when the air conditioner is turned on, as well as the temperatures of the multiple indoor pipe temperature sensing packages, the temperature of the inner ring temperature sensing package and the temperature of the low pressure sensor obtained each time a preset time interval is reached, whether there is an abnormality is detected according to a preset detection rule, and a detection result is obtained, including: If T 内环(t判) ≤T 内环(t0) -2, it is determined that the air conditioner operates normally within the current preset time interval; If T 内环(t判) >T 内环(t0) -2, T 内1(t判) ≤T 内1(t0) -2 and T 内2(t判) ≤T 内2(t0) -2, it is determined that the air conditioner operates normally but has insufficient cooling capacity during the current preset time interval; If T 内环(t判) ≤T 内环(t0) -2, T 内1(t判) ≤T 内1(t0) -2 and T 内2(t判) >T 内2(t0) -2, it is determined that the air conditioning cooling capacity is seriously insufficient within the current preset time interval. After another preset time interval, if T 内2(t判) ≤T 内2(t0) -2, it is determined that there is no welding blockage in the air conditioner. If T 内2(t判) >T 内2(t0) -2, it is determined that there is welding or dirt blockage at the rear of the evaporator; If T 内环(t判) >T 内环(t0) -2, T 内1(t判) >T 内1(t0) -2 and T 内2(t判) ≤T 内2(t0) -2, it is determined that the air conditioning refrigeration capacity is seriously insufficient within the current preset time interval, and the compressor operating frequency is increased. After another preset time interval, if T 内1(t判) ≤T 内1(t0) -2, it is determined that there is no welding blockage in the air conditioner. If T 内1(t判) >T 内1(t0) -2, it is determined that there is welding or dirt blockage at the front of the evaporator; If T 内环(t判) >T 内环(t0) -2, T 内1(t判) >T 内1(t0) -2, T 内2(t判) >T 内2(t0) -2, and T 内1(t判) and T 内2(t判) Average<T 低压(t判) +T 补 +3, it is judged that the compressor frequency is too low; If T 内环(t判) >T 内环(t0) -2, T 内1(t判) >T 内1(t0) -2, T 内2(t判) >T 内2(t0) -2, and T 内1(t判) and T 内2(t判) Average ≥ T 低压(t判) +T 补 +3, it is judged that the air conditioner has too little refrigerant or the valve is blocked; Among them, the temperature of the first indoor unit pipeline temperature sensor is T 内1 , the temperature of the first indoor unit pipeline temperature sensor T 内2 , the inner ring temperature sensing package senses the ambient temperature T 内环 , the refrigerant saturation temperature T corresponding to the low pressure sensor 低压 , Compensation temperature T from evaporator to air inlet 补 , t is the current time when the preset time interval is reached, and t0 is the time when the air conditioner is turned on.

2. The abnormality detection method of the air conditioner with multiple internal unit pipeline temperature sensing packages according to claim 1 is characterized in that: Two indoor pipe temperature sensing bag air conditioners are installed in the indoor heat exchanger.

3. The abnormality detection method of the air conditioner with multiple internal unit pipeline temperature sensing packages according to claim 2 is characterized in that: The first indoor unit pipeline temperature sensing package in the indoor heat exchanger is installed at the refrigerant inlet position on the refrigerant flow path in the cooling flow direction; the second indoor unit pipeline temperature sensing package in the indoor heat exchanger is installed at the refrigerant inlet position on the refrigerant flow path in the heating flow direction.

4. The abnormality detection method for an air conditioner with multiple internal unit pipeline temperature sensing packages according to claim 3 is characterized in that: The first indoor unit pipeline temperature sensing package and the second indoor unit pipeline temperature sensing package are respectively placed at the front and rear of the evaporator of the indoor heat exchanger.

5. The abnormality detection method of the air conditioner with multiple internal unit pipeline temperature sensing packages according to claim 1, characterized in that: If the air conditioner includes two indoor pipe temperature sensing packages, when the air conditioner is turned on, the temperatures of the multiple indoor pipe temperature sensing packages and the temperature of the inner ring temperature sensing package in the air conditioner are obtained, including: When the air conditioner is turned on, the temperature measured by the first indoor unit pipe temperature sensing package is obtained, the temperature measured by the second indoor unit pipe temperature sensing package is obtained, and the temperature measured by the inner ring temperature sensing package is obtained.

6. The abnormality detection method of the air conditioner with multiple internal unit pipeline temperature sensing packages according to claim 1, characterized in that: The method of obtaining the temperature of multiple internal pipe temperature sensing packages, the temperature of the inner ring temperature sensing package and the temperature of the low pressure sensor in the air conditioner at preset time intervals includes: From the moment the air conditioner is turned on, every time the preset time interval is reached, the temperature measured by the first indoor unit pipe temperature sensing package is obtained, the temperature measured by the second indoor unit pipe temperature sensing package is obtained, the temperature measured by the inner ring temperature sensing package is obtained, and the temperature measured by the low pressure sensor is obtained.

7. A storage medium, characterized in that: The computer program stored in the storage medium can be executed by one or more processors and can be used to implement the abnormality detection method for the air conditioner with multiple internal unit pipeline temperature sensing packages as described in any one of claims 1 to 6.

8. An electronic device, characterized in that: It includes a memory and a processor, the memory stores a computer program, the memory and the processor are communicatively connected to each other, and when the computer program is executed by the processor, the abnormality detection method for the air conditioner with multiple internal unit pipeline temperature sensing packages as described in any one of claims 1 to 6 is executed.

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