Method and device for determining a clogging problem of an air conditioner evaporator

Abstract

The application provides a method and a device for determining a dirty blockage problem of an air conditioner evaporator. The method comprises: obtaining a standard tube temperature of the air conditioner evaporator when the air conditioner operates in multiple operating modes, the standard tube temperature of the air conditioner evaporator being a tube temperature of the air conditioner evaporator when a cumulative operating time of the air conditioner evaporator in the operating mode is less than or equal to a preset time threshold; obtaining an actual tube temperature of the air conditioner evaporator when the air conditioner operates in each operating mode, the actual tube temperature of the air conditioner evaporator being a tube temperature of the air conditioner evaporator when the cumulative operating time of the air conditioner in the operating mode is greater than the preset time threshold; and determining whether the air conditioner evaporator has a dirty blockage problem according to the standard tube temperature and the actual tube temperature of the air conditioner in each operating mode. The method periodically checks the dirty blockage problem of the evaporator by setting the tube temperature and other parameters, timely reminds the user to clean, and avoids the decrease of the heat exchanger efficiency.

Description

Technical Field

[0001] This application relates to the field of determining the problem of dirt blockage in air conditioner evaporators, and more specifically, to a method for determining the problem of dirt blockage in air conditioner evaporators, an apparatus for determining the problem of dirt blockage in air conditioner evaporators, a computer-readable storage medium, and an electronic device. Background Technology

[0002] After a period of use, the evaporator of a household air conditioner inevitably accumulates dust, dirt, or becomes clogged. Under harsh conditions, dust, impurities, and lint adhere to the evaporator, severely affecting the heat exchange efficiency between the two elements and causing a decrease in cooling (heating) capacity. However, current technology cannot accurately detect evaporator surface clogging in a timely manner. Summary of the Invention

[0003] The main objective of this application is to provide a method, apparatus, computer-readable storage medium, and electronic device for determining the problem of dirt blockage on the surface of an air conditioner evaporator, so as to at least solve the problem that the prior art cannot detect the problem of dirt blockage on the surface of the evaporator in a timely and accurate manner.

[0004] To achieve the above objectives, according to one aspect of this application, a method for determining the clogging problem of an air conditioner evaporator is provided, comprising: obtaining a standard pipe temperature of the air conditioner evaporator when the air conditioner is running in multiple operating modes, wherein the standard pipe temperature of the air conditioner evaporator is the pipe temperature of the air conditioner evaporator when the cumulative running time of the air conditioner in the operating modes is less than or equal to a preset duration threshold; obtaining an actual pipe temperature of the air conditioner evaporator when the air conditioner is running in each of the operating modes, wherein the actual pipe temperature of the air conditioner evaporator is the pipe temperature of the air conditioner evaporator when the cumulative running time of the air conditioner in the operating modes is greater than the preset duration threshold; and determining whether the air conditioner evaporator has a clogging problem based on the magnitude of the standard pipe temperature and the actual pipe temperature of the air conditioner in each of the operating modes.

[0005] Optionally, obtaining the standard pipe temperature of the air conditioner evaporator when the air conditioner is running in multiple operating modes includes: when the first running time of the air conditioner reaches a first preset time period, calculating the average first pipe temperature of the air conditioner evaporator within a first preset time period, and determining the average first pipe temperature as the standard pipe temperature of the air conditioner evaporator, wherein the first running time is the running time calculated from the start time of the air conditioner running in the operating mode, the first preset time period is less than the preset time period threshold, and the start time of the first preset time period is the time when the first running time of the air conditioner reaches the first preset time period.

[0006] Optionally, there are multiple actual pipe temperatures. Obtaining the actual pipe temperature of the air conditioner evaporator when the air conditioner is running in each of the operating modes includes: when the second running time of the air conditioner reaches the second preset time, calculating the average second pipe temperature of the air conditioner evaporator once every second preset time period to obtain multiple average second pipe temperatures, and determining each average second pipe temperature as the actual pipe temperature of each air conditioner evaporator. The second running time is the running time calculated from the start time of the air conditioner running again in the operating mode after the cumulative running time of the air conditioner reaches the preset time threshold.

[0007] Optionally, determining whether the air conditioner evaporator has a dirt blockage problem based on the standard pipe temperature and the actual pipe temperature of the air conditioner in each of the said operating modes includes: determining that the air conditioner evaporator has a dirt blockage problem when the operating mode is cooling mode or dehumidification mode and the actual pipe temperature is lower than the standard pipe temperature; and determining that the air conditioner evaporator has a dirt blockage problem when the operating mode is heating mode and the actual pipe temperature is higher than the standard pipe temperature.

[0008] Optionally, the air conditioner evaporator has N actual pipe temperatures, arranged in chronological order of acquisition. When the operating mode is cooling or dehumidification, and the actual pipe temperature is lower than the standard pipe temperature, the air conditioner evaporator is determined to have a blockage problem. This includes determining that the air conditioner evaporator has a blockage problem when the first actual pipe temperature is lower than the standard pipe temperature, the Nth actual pipe temperature is lower than the (N-1)th actual pipe temperature, and the difference between the standard pipe temperature and the last actual pipe temperature is greater than or equal to a first preset difference, where N ≥ 2. Alternatively, when the operating mode is heating, and the actual pipe temperature is higher than the standard pipe temperature, the air conditioner evaporator is determined to have a blockage problem when the first actual pipe temperature is higher than the standard pipe temperature, the Nth actual pipe temperature is higher than the (N-1)th actual pipe temperature, and the difference between the last actual pipe temperature and the standard pipe temperature is greater than or equal to a second preset difference, where N ≥ 2.

[0009] Optionally, before obtaining the standard pipe temperature of the air conditioner evaporator when the air conditioner is running in multiple operating modes, the method further includes: obtaining the outdoor ambient temperature of the air conditioner when the operating mode is heating mode; and determining the standard pipe temperature of the air conditioner evaporator when the outdoor ambient temperature is greater than or equal to a preset outer ring temperature, wherein the preset outer ring temperature is a preset value of the outdoor ambient temperature of the air conditioner.

[0010] Optionally, the multiple operating modes are cooling mode, dehumidification mode, and heating mode, wherein the cooling mode further includes multiple first sub-modes, the heating mode includes multiple second sub-modes, and the method further includes: obtaining the inner ring temperature, outer ring temperature, fan speed, and compressor frequency of the air conditioner at the current moment; and determining the operating mode of the air conditioner at the current moment based on the inner ring temperature, outer ring temperature, fan speed, and compressor frequency of the air conditioner at the current moment.

[0011] According to another aspect of this application, an apparatus for determining the clogging problem of an air conditioner evaporator is provided, comprising: a first acquisition unit, configured to acquire a standard pipe temperature of the air conditioner evaporator when the air conditioner is running in multiple operating modes, wherein the standard pipe temperature of the air conditioner evaporator is the pipe temperature of the air conditioner evaporator when the cumulative running time of the air conditioner in the operating modes is less than or equal to a preset time threshold; a second acquisition unit, configured to acquire an actual pipe temperature of the air conditioner evaporator when the air conditioner is running in each of the operating modes, wherein the actual pipe temperature of the air conditioner evaporator is the pipe temperature of the air conditioner evaporator when the cumulative running time of the air conditioner in the operating modes is greater than the preset time threshold; and a determination unit, configured to determine whether the air conditioner evaporator has a clogging problem based on the magnitude of the standard pipe temperature and the actual pipe temperature of the air conditioner in each of the operating modes.

[0012] According to another aspect of this application, a computer-readable storage medium is provided, the computer-readable storage medium including a stored program, wherein, when the program is executed, it controls the device where the computer-readable storage medium is located to perform any of the methods for determining the dirt blockage problem of the air conditioner evaporator.

[0013] According to another aspect of this application, an electronic device is provided, comprising: one or more processors, a memory, and one or more programs, wherein the one or more programs are stored in the memory and configured to be executed by the one or more processors, the one or more programs including a method for performing a method for determining a clogging problem in any of the aforementioned air conditioner evaporators.

[0014] Applying the technical solution of this application, the method for determining the dirt blockage problem of the air conditioner evaporator first obtains the standard pipe temperature of the air conditioner evaporator when the air conditioner is running in multiple operating modes. The standard pipe temperature of the air conditioner evaporator is the pipe temperature of the air conditioner evaporator when the cumulative running time of the air conditioner in each operating mode is less than or equal to a preset time threshold. Then, it obtains the actual pipe temperature of the air conditioner evaporator when the air conditioner is running in each operating mode. The actual pipe temperature of the air conditioner evaporator is the pipe temperature of the air conditioner evaporator when the cumulative running time of the air conditioner in each operating mode is greater than the preset time threshold. Finally, based on the difference between the standard pipe temperature and the actual pipe temperature of the air conditioner in each operating mode, it determines whether the air conditioner evaporator has a dirt blockage problem. This method, through setting parameters such as pipe temperature, regularly checks for evaporator dirt blockage problems, promptly reminds users to clean the evaporator, and avoids problems caused by the inability to detect dirt blockage on the evaporator surface in a timely and accurate manner in the prior art. Attached Figure Description

[0015] The accompanying drawings, which form part of this application, are used to provide a further understanding of this application. The illustrative embodiments and descriptions of this application are used to explain this application and do not constitute an undue limitation of this application. In the drawings:

[0016] Figure 1 A hardware block diagram of a mobile terminal for performing a method for determining the dirt blockage problem of an air conditioner evaporator, according to an embodiment of this application, is shown.

[0017] Figure 2 A flowchart illustrating a method for determining the dirt and clogging problem of an air conditioner evaporator according to an embodiment of this application is shown.

[0018] Figure 3 The diagram illustrates the pipe temperature trend of an air conditioner evaporator when a dirt blockage occurs in the evaporator during cooling mode, according to an embodiment of this application.

[0019] Figure 4 This illustration shows a pipe temperature trend graph of an air conditioner evaporator when a dirt blockage occurs in heating mode, according to an embodiment of this application.

[0020] Figure 5 A structural block diagram of a device for determining the dirt and clogging problem of an air conditioner evaporator according to an embodiment of this application is shown.

[0021] The above figures include the following reference numerals:

[0022] 102. Processor; 104. Memory; 106. Transmission device; 108. Input / output device. Detailed Implementation

[0023] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0024] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0025] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate for the embodiments of this application described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0026] As described in the background section, after a period of use, the evaporator of existing household air conditioners inevitably accumulates dust, dirt, or becomes clogged. Under harsh conditions, dust, impurities, and lint adhere to the evaporator, severely affecting the heat exchange efficiency between the two elements, resulting in a decrease in cooling capacity (heating capacity). However, existing technologies cannot accurately detect evaporator surface clogging in a timely manner. To address this issue, embodiments of this application provide a method for determining evaporator clogging, a device for determining evaporator clogging, a computer-readable storage medium, and an electronic device.

[0027] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

[0028] The methods and embodiments provided in this application can be executed on a mobile terminal, computer terminal, or similar computing device. Taking running on a mobile terminal as an example, Figure 1 This is a hardware structure block diagram of a mobile terminal for a method of determining the dirt and blockage problem of an air conditioner evaporator according to an embodiment of the present invention. Figure 1 As shown, a mobile terminal may include one or more ( Figure 1Only one is shown in the diagram. A processor 102 (which may include, but is not limited to, a microprocessor MCU or a programmable logic device FPGA, etc.) and a memory 104 for storing data are also shown. The mobile terminal may further include a transmission device 106 for communication functions and an input / output device 108. Those skilled in the art will understand that... Figure 1 The structure shown is for illustrative purposes only and does not limit the structure of the mobile terminal described above. For example, the mobile terminal may also include components that are more... Figure 1 The more or fewer components shown, or having the same Figure 1 The different configurations shown.

[0029] The memory 104 can be used to store computer programs, such as application software programs and modules, like the computer program corresponding to the method for determining the dirt blockage problem of the air conditioner evaporator in this embodiment of the invention. The processor 102 executes various functional applications and data processing by running the computer program stored in the memory 104, thereby implementing the above-described method. The memory 104 may include high-speed random access memory, and may also include non-volatile memory, such as one or more magnetic storage devices, flash memory, or other non-volatile solid-state memory. In some instances, the memory 104 may further include memory remotely located relative to the processor 102, and these remote memories can be connected to the mobile terminal via a network. Examples of the above-described networks include, but are not limited to, the Internet, corporate intranets, local area networks, mobile communication networks, and combinations thereof. The transmission device 106 is used to receive or send data via a network. Specific examples of the above-described networks may include wireless networks provided by the mobile terminal's communication provider. In one example, the transmission device 106 includes a network interface controller (NIC), which can be connected to other network devices via a base station to communicate with the Internet. In one example, the transmission device 106 may be a radio frequency (RF) module, which is used to communicate with the Internet wirelessly.

[0030] This embodiment provides a method for determining the problem of dirt blockage in an air conditioner evaporator that runs on a mobile terminal, computer terminal, or similar computing device. It should be noted that the steps shown in the flowchart in the accompanying drawings can be executed in a computer system such as a set of computer-executable instructions. Also, although a logical order is shown in the flowchart, in some cases, the steps shown or described can be executed in a different order than that shown here.

[0031] Figure 2 This is a flowchart of a method for determining the problem of dirt blockage in an air conditioner evaporator according to an embodiment of this application. Figure 2 As shown, the method includes the following steps:

[0032] Before obtaining the standard pipe temperature of the air conditioner evaporator when the air conditioner is operating in multiple modes, the above method also includes:

[0033] Step S301: When the above operating mode is heating mode, obtain the outdoor ambient temperature of the air conditioner.

[0034] Step S302: When the outdoor ambient temperature is greater than or equal to the preset outer ring temperature, determine the standard pipe temperature of the air conditioner evaporator when the air conditioner is running in multiple operating modes. The preset outer ring temperature is the preset value of the outdoor ambient temperature of the air conditioner.

[0035] Specifically, when the air conditioner is running in heating mode, considering that it will enter a periodic defrosting cycle when the outer ambient temperature is low, resulting in significant fluctuations in the indoor pipe temperature, it is more accurate to determine whether there is a blockage by using the air conditioner evaporator pipe temperature when the outdoor ambient temperature is greater than or equal to the preset outer ambient temperature, thus reducing the pipe temperature error caused by defrosting. Generally, the preset outer ambient temperature is set to 7℃, but the specific setting can be adjusted according to the actual application.

[0036] Step S201: Obtain the standard pipe temperature of the air conditioner evaporator when the air conditioner is running in multiple operating modes. The standard pipe temperature of the air conditioner evaporator is the pipe temperature of the air conditioner evaporator when the cumulative running time of the air conditioner in the above operating modes is less than or equal to a preset time threshold.

[0037] Specifically, after the air conditioner is powered on, it is turned on using the remote control. When the air conditioner is running in different operating modes for the first time, the indoor fan speed and compressor operating frequency will be forced into different operating levels for 2 hours. During the last 30 minutes of these 2 hours, the system will record the average pipe temperature of the air conditioner evaporator and determine the average value of the corresponding operating mode as the standard pipe temperature of the corresponding air conditioner evaporator. Generally, the preset duration threshold is set to 240 hours, but the specific setting value can be changed according to the actual application.

[0038] For example: When the air conditioner is first powered on, it is forced to run for 2 hours in each operating mode, and the average pipe temperature of the air conditioner evaporator in the last 30 minutes of these 2 hours is recorded. The average pipe temperature in these 30 minutes is determined as the standard pipe temperature of the air conditioner evaporator in that operating mode.

[0039] The method of obtaining the standard pipe temperature of the air conditioner evaporator when the air conditioner is running in multiple operating modes includes the following steps: when the first running time of the air conditioner reaches a first preset time, the average first pipe temperature of the air conditioner evaporator within a first preset time period is calculated, and the average first pipe temperature is determined as the standard pipe temperature of the air conditioner evaporator. The first running time is the running time calculated from the start time of the air conditioner running in the operating mode, the first preset time is less than the preset time threshold, and the start time of the first preset time period is the time when the first running time of the air conditioner reaches the first preset time.

[0040] Specifically, when the first running time of the air conditioner reaches the first preset duration, the average first pipe temperature of the air conditioner evaporator within the first preset time period is calculated. This is to ensure that the air conditioner operates smoothly in the corresponding operating mode and to make the obtained standard pipe temperature value more accurate. Generally, the first preset duration is 1 hour and 30 minutes, and the first preset time period is 30 minutes. The specific settings can be changed according to the actual application.

[0041] Step S202: Obtain the actual pipe temperature of the air conditioner evaporator when the air conditioner is running in each of the above-mentioned operating modes. The actual pipe temperature of the air conditioner evaporator is the pipe temperature of the air conditioner evaporator when the cumulative running time of the air conditioner in the above-mentioned operating modes is greater than the preset time threshold.

[0042] Specifically, obtaining the actual pipe temperature of the air conditioner evaporator can determine the actual operating status of the air conditioner evaporator at the current moment. There may be multiple actual pipe temperatures in a certain operating mode (e.g., 4, 5, etc.), which can more accurately determine the actual operating status of the air conditioner evaporator.

[0043] There are multiple actual pipe temperatures. Obtaining the actual pipe temperature of the air conditioner evaporator when the air conditioner is running in each of the above-mentioned operating modes includes the following steps: when the second running time of the air conditioner reaches the second preset time, the average value of the second pipe temperature of the air conditioner evaporator is calculated once every second preset time period to obtain multiple average values ​​of the second pipe temperature, and each average value of the second pipe temperature is determined as the actual pipe temperature of each of the above-mentioned air conditioner evaporators. The second running time is the running time calculated from the start time of the air conditioner running in the above-mentioned operating mode again after the cumulative running time of the air conditioner reaches the preset time threshold.

[0044] Specifically, this ensures that the actual pipe temperature obtained each time is the pipe temperature under stable operation of the air conditioner, making the actual pipe temperature value more accurate. Furthermore, comparing multiple actual pipe temperatures with a standard pipe temperature improves the accuracy of determining whether the air conditioner evaporator is clogged. Also, the second preset time period should not be set too short, because most air conditioners do not quickly become clogged, thus reducing the frequency of the air conditioner entering cleaning mode and improving the user experience. The second preset duration can be set to 1 hour and 30 minutes, and the second preset time period can be set to 241 hours and 30 minutes; the specific settings can be adjusted according to the actual application.

[0045] For example, when an air conditioner is first powered on, it runs in the first operating mode for 2 hours, and the average pipe temperature of the evaporator during the last 30 minutes of these 2 hours is recorded as the standard pipe temperature. Then, after the air conditioner runs in the first operating mode for another 240 hours, a second 2-hour timer is started, and the average pipe temperature of the evaporator during the last 30 minutes of this second 2-hour timer is recorded as the first actual pipe temperature. This process is repeated for another 240 hours, a third 2-hour timer is started, and the average pipe temperature of the evaporator during the last 30 minutes of this third 2-hour timer is recorded as the second actual pipe temperature. This process continues until N actual pipe temperatures are determined, which can be used to determine if the air conditioner evaporator is clogged. Therefore, the second preset time period is actually 241 hours and 30 minutes, calculated by adding the 240-hour interval to the 1 hour and 30 minutes prior to the 2-hour interval.

[0046] Step S203: Based on the standard pipe temperature and the actual pipe temperature of the air conditioner under each of the above operating modes, determine whether the air conditioner evaporator has a dirt blockage problem.

[0047] Specifically, by comparing the standard pipe temperature with the actual pipe temperature, the evaporator can be checked regularly for dirt and blockage, and users can be reminded in a timely manner to complete the cleaning and avoid a decrease in heat exchanger efficiency.

[0048] Specifically, determining whether the air conditioner evaporator is clogged, based on the standard pipe temperature and the actual pipe temperature of the air conditioner under each of the aforementioned operating modes, includes the following steps:

[0049] Step S401: When the above operating mode is cooling mode or dehumidification mode, and the above actual pipe temperature is lower than the above standard pipe temperature, it is determined that the above air conditioner evaporator has the above dirt blockage problem.

[0050] There are N actual pipe temperatures of the air conditioner evaporator. These N actual pipe temperatures are arranged in chronological order of acquisition. When the operating mode is cooling mode or dehumidification mode, and the actual pipe temperature is lower than the standard pipe temperature, it is determined that the air conditioner evaporator has a dirt blockage problem. This includes determining that the air conditioner evaporator has a dirt blockage problem when the first actual pipe temperature is lower than the standard pipe temperature, the Nth actual pipe temperature is lower than the (N-1)th actual pipe temperature, and the difference between the standard pipe temperature and the last actual pipe temperature is greater than or equal to a first preset difference. Where N≥2.

[0051] Specifically, this allows for a more accurate determination of whether the air conditioner's evaporator is clogged or dirty when in cooling or dehumidification mode, avoiding misjudgments due to errors.

[0052] Step S402: When the above operating mode is heating mode and the above actual pipe temperature is greater than the above standard pipe temperature, it is determined that the above air conditioner evaporator has the above dirt blockage problem.

[0053] There are N actual pipe temperatures of the air conditioner evaporator. These N actual pipe temperatures are arranged in chronological order of acquisition. When the operating mode is heating mode and the actual pipe temperature is greater than the standard pipe temperature, it is determined that the air conditioner evaporator has a dirt blockage problem. This includes determining that the air conditioner evaporator has a dirt blockage problem when the first actual pipe temperature is greater than the standard pipe temperature, the Nth actual pipe temperature is greater than the (N-1)th actual pipe temperature, and the difference between the last actual pipe temperature and the standard pipe temperature is greater than or equal to a second preset difference. Where N≥2.

[0054] Specifically, this allows for a more accurate determination of whether the air conditioner's evaporator is clogged or dirty when in heating mode, avoiding misjudgments due to errors.

[0055] The aforementioned operating modes include a cooling mode, a dehumidification mode, and a heating mode. The cooling mode further includes multiple first sub-modes, and the heating mode includes multiple second sub-modes. The method also includes the following steps:

[0056] Step S501: Obtain the inner ring temperature, outer ring temperature, fan speed, and compressor frequency of the air conditioner at the current moment;

[0057] Step S502: Determine the operating mode of the air conditioner at the current moment based on the inner ring temperature, outer ring temperature, fan speed, and compressor frequency of the air conditioner at the current moment.

[0058] Specifically, this allows for comparison based on different operating modes of the air conditioner, enabling a more accurate determination of whether the air conditioner evaporator is clogged, and avoiding incorrect judgments due to different operating modes of the air conditioner.

[0059] For example, in cooling or dehumidifying mode, the air conditioner is divided into three operating ranges based on its inner and outer ring temperatures, fan speed, and compressor frequency: transitional operating range, normal temperature operating range 1, normal temperature operating range 2, high temperature operating range, and ultra-high temperature operating range. In heating mode, the air conditioner is divided into three operating ranges based on its inner and outer ring temperatures, fan speed, and compressor frequency: high temperature operating range, transitional operating range, and normal temperature operating range.

[0060] In one alternative example, after the air conditioner is powered on, it is turned on via remote control and the cooling (or dehumidification) mode is activated. After the compressor starts, the corresponding indoor ambient temperature (T) of the air conditioner is recorded under different indoor and outdoor operating conditions and different fan speeds. 内环 ), outdoor ambient temperature of the air conditioner (abbreviated as T) 外环 ), the indoor fan baffle of the air conditioner, the compressor frequency of the air conditioner, and the internal pipe temperature of the air conditioner evaporator (abbreviated as T). 内管 The cumulative compressor start-up time is calculated, when t 累计时间 When the air conditioner restarts after ≥240 hours, under certain indoor and outdoor operating conditions and at a certain fan speed, the evaporator pipe temperature is compared. The degree of dirt or blockage on the evaporator surface is determined by the rate of change of the pipe temperature difference. The specific logic is as follows:

[0061] When the air conditioner first starts operating in different operating zones, the indoor fan damper and compressor operating frequencies will be forced into several operating zones as shown in Table 1, and each operating zone will run for 2 hours. During the last 30 minutes of these 2 hours, the system will record T. 内管 The average values ​​are t1 and t2 respectively. 1 t2 1 t3 1 t4 1 t5 1 After the compressor has accumulated 240 hours of operation, and when the indoor and outdoor ambient temperatures meet any of the following operating ranges, if the indoor fan speed and compressor frequency re-enter the lower setting of that operating range for 2 hours, the system will record T again. 内管 The average t1 of the last 30 minutes 2 t2 2 t3 2 t4 2 t5 2 (The specific parameters recorded depend on the specific operating range). Repeat the above logic a total of 5 times. Regardless of the operating range, when T... 内管When the temperature shows a downward trend, the system determines that the evaporator is clogged, and the entire unit will output a clogged fault code ZD, reminding the user to clean it promptly. If no downward trend is observed, the accumulated count is reset to zero, and the system recalculates (considering some special issues and the inherent capacity degradation of the air conditioning system, the recalculation includes the initial count). Additionally, if the air conditioner is powered off during recording, upon powering it back on, the average temperature of the evaporator's inner pipe will be recorded starting from the first reading.

[0062] Table 1. Operating parameters of air conditioners in different operating ranges under cooling mode (or dehumidification mode)

[0063]

[0064] T 内管 A downward trend is defined as follows: the temperature of the tube is lower than the temperature of the tube before, and this occurs 5 times in a row, with the temperature difference between the last and the first being ≥2℃.

[0065] Among them, such as Figure 3 As shown, Figure 3 This shows the situation where the air conditioner experiences a dirt blockage problem when operating in the normal temperature range 2 of cooling mode, at time t3. 1 t3 2 t3 3 t3 4 t3 5 t3 6 The changing trend.

[0066] In another alternative example, after the air conditioner is powered on, it is turned on via remote control and the heating mode is activated. After the compressor starts, the corresponding indoor ambient temperature (T) of the air conditioner is recorded under different indoor and outdoor operating conditions and different fan speeds. 内环 ), outdoor ambient temperature of the air conditioner (abbreviated as T) 外环 ), the indoor fan baffle of the air conditioner, the compressor frequency of the air conditioner, and the internal pipe temperature of the air conditioner evaporator (abbreviated as T). 内管 The cumulative compressor start-up time is calculated, when t 累计时间 When the air conditioner restarts after ≥240 hours, under certain indoor and outdoor operating conditions and at a certain fan speed, the evaporator pipe temperature is compared. The degree of dirt or blockage on the evaporator surface is determined by the rate of change of the pipe temperature difference. The specific logic is as follows:

[0067] When the air conditioner first starts operating in different operating zones, the indoor fan damper and compressor operating frequencies will be forced into several operating zones as shown in Table 1, and each operating zone will run for 2 hours. During the last 30 minutes of these 2 hours, the system will record T. 内管 The average values ​​are t6. 1 t7 1 t8 1 .

[0068] After the compressor has accumulated 240 hours of operation, and when the indoor and outdoor ambient temperatures meet any of the following operating ranges, the indoor fan speed and compressor frequency will re-enter the lower setting of that operating range for 2 hours, and the system will record T again. 内管 The average t6 in the last 30 minutes 2 t7 2 t8 2 (The specific parameters recorded depend on the specific operating range). Repeat the above logic a total of 5 times. Regardless of the operating range, when T... 内管 When the temperature shows an upward trend, the system determines that the evaporator is clogged, and the entire unit will output a clog fault code ZD, reminding the user to clean it promptly. If no upward trend appears, the accumulated count is reset to zero, and the system restarts the accumulation process. (Considering some special issues and the inherent capacity degradation of the air conditioning system, the restarted accumulation includes the initial count). Additionally, if the air conditioner is powered off during recording, upon powering it back on, the average temperature of the evaporator's inner pipe will be recorded starting from the first reading.

[0069] Table 2. Operating parameters of the air conditioner in heating mode for different operating ranges

[0070]

[0071] In addition, considering that the air conditioner will enter a periodic defrosting cycle when the outer ring temperature is low, resulting in large fluctuations in the indoor pipe temperature, the judgment range is set at T. 外环 ≥7℃ or above.

[0072] Among them, T 内管 An upward trend is defined as follows: the temperature of the tube is higher in each subsequent cycle than the temperature of the previous cycle, and this occurs five times consecutively, with the temperature difference between the last and the first cycle being ≥3℃.

[0073] Among them, such as Figure 4 As shown, Figure 4 This shows the situation where the air conditioner experiences a blockage problem when operating in heating mode at a normal temperature range (t8). 1 t8 2 t8 3 t8 4 t8 5 t8 6 The changing trend.

[0074] The method for determining the evaporator clogging problem in this application first obtains the standard pipe temperature of the evaporator when the air conditioner is running in multiple operating modes. The standard pipe temperature is the pipe temperature of the evaporator when the cumulative running time of the evaporator in each operating mode is less than or equal to a preset time threshold. Then, the actual pipe temperature of the evaporator is obtained when the cumulative running time of the evaporator in each operating mode is greater than the preset time threshold. Finally, based on the difference between the standard pipe temperature and the actual pipe temperature in each operating mode, it is determined whether the evaporator has a clogging problem. This method, through setting parameters such as pipe temperature, periodically checks for evaporator clogging problems, promptly reminds users to clean the evaporator, and avoids problems caused by insufficient heat exchanger efficiency, thus solving the problem in existing technologies where evaporator surface clogging cannot be detected in a timely and accurate manner.

[0075] It should be noted that the steps shown in the flowchart in the accompanying drawings can be executed in a computer system such as a set of computer-executable instructions, and although a logical order is shown in the flowchart, in some cases the steps shown or described may be executed in a different order than that shown here.

[0076] This application also provides a device for determining the problem of dirt blockage in an air conditioner evaporator. It should be noted that this device can be used to execute the method for determining the problem of dirt blockage in an air conditioner evaporator provided in this application. This device is used to implement the above embodiments and preferred embodiments; details already described will not be repeated. As used below, the term "module" can refer to a combination of software and / or hardware that performs a predetermined function. Although the device described in the following embodiments is preferably implemented in software, hardware implementation, or a combination of software and hardware, is also possible and contemplated.

[0077] The following describes the apparatus for determining the dirt and blockage problem of the air conditioner evaporator provided in the embodiments of this application.

[0078] Figure 5 This is a schematic diagram of a device for determining the problem of dirt blockage in an air conditioner evaporator according to an embodiment of this application. Figure 5As shown, the device includes a first acquisition unit 10, a second acquisition unit 20, and a determination unit 30. The first acquisition unit 10 is used to acquire the standard pipe temperature of the air conditioner evaporator when the air conditioner is running in multiple operating modes. The standard pipe temperature of the air conditioner evaporator is the pipe temperature of the air conditioner evaporator when the cumulative running time of the air conditioner in the above operating modes is less than or equal to a preset time threshold. The second acquisition unit 20 is used to acquire the actual pipe temperature of the air conditioner evaporator when the air conditioner is running in each of the above operating modes. The actual pipe temperature of the air conditioner evaporator is the pipe temperature of the air conditioner evaporator when the cumulative running time of the air conditioner in the above operating modes is greater than the preset time threshold. The determination unit 30 is used to determine whether the air conditioner evaporator has a dirt blockage problem based on the magnitude of the standard pipe temperature and the actual pipe temperature of the air conditioner in each of the above operating modes.

[0079] The device for determining the evaporator clogging problem in this application includes a first acquisition unit, a second acquisition unit, and a determination unit. The first acquisition unit acquires the standard pipe temperature of the evaporator when the air conditioner is running in multiple operating modes. The standard pipe temperature is the pipe temperature of the evaporator when the cumulative running time of the evaporator in each operating mode is less than or equal to a preset time threshold. The second acquisition unit acquires the actual pipe temperature of the evaporator when the air conditioner is running in each operating mode. The actual pipe temperature is the pipe temperature of the evaporator when the cumulative running time of the air conditioner in each operating mode is greater than a preset time threshold. The determination unit determines whether the evaporator has a clogging problem based on the difference between the standard pipe temperature and the actual pipe temperature in each operating mode. This device, through setting parameters such as pipe temperature, periodically checks for evaporator clogging problems, promptly reminds users to clean the evaporator, and avoids problems caused by insufficient heat exchanger efficiency, thus solving the problem in the prior art where it is impossible to detect evaporator surface clogging problems in a timely and accurate manner.

[0080] In some optional examples, the first acquisition unit includes a first calculation module, configured to calculate the average first pipe temperature of the air conditioner evaporator within a first preset time period when the first operating time of the air conditioner reaches a first preset time period, and determine the average first pipe temperature as the standard pipe temperature of the air conditioner evaporator. The first operating time is the operating time calculated from the start time of the air conditioner operating in the aforementioned operating mode, the first preset time period is less than the preset time period threshold, and the start time of the first preset time period is the moment when the first operating time of the air conditioner reaches the first preset time period. This is to ensure stable operation of the air conditioner in the corresponding operating mode and to make the acquired standard pipe temperature value more accurate.

[0081] In some optional examples, there are multiple actual pipe temperatures. The second acquisition unit includes a second calculation module, used to calculate the average second pipe temperature of the air conditioner evaporator every second preset time interval when the second running time of the air conditioner reaches a second preset time interval, obtaining multiple average second pipe temperatures, and determining each average second pipe temperature as the actual pipe temperature of each air conditioner evaporator. The second running time is the running time calculated from the start of the air conditioner's operation in the aforementioned operating mode after its cumulative running time reaches the preset time threshold. This ensures that the actual pipe temperature obtained each time is the pipe temperature of the air conditioner under stable operation, making the actual pipe temperature value more accurate.

[0082] In some optional examples, the determining unit includes a first determining module and a second determining module. The first determining module is used to determine that the air conditioner evaporator has the aforementioned dirt blockage problem when the operating mode is cooling mode or dehumidification mode and the actual pipe temperature is lower than the standard pipe temperature. The second determining module is used to determine that the air conditioner evaporator has the aforementioned dirt blockage problem when the operating mode is heating mode and the actual pipe temperature is higher than the standard pipe temperature. This allows for a more accurate determination of whether the air conditioner evaporator has a dirt blockage problem in cooling mode, dehumidification mode, and heating mode, avoiding misjudgments due to errors.

[0083] In this embodiment, there are N actual pipe temperatures of the air conditioner evaporator, arranged in chronological order of acquisition. The first determining module includes a first determining submodule, used to determine that the air conditioner evaporator has a dirt blockage problem when the first actual pipe temperature is lower than the standard pipe temperature, the Nth actual pipe temperature is lower than the (N-1)th actual pipe temperature, and the difference between the standard pipe temperature and the last actual pipe temperature is greater than or equal to a first preset difference, where N≥2. The second determining module includes a second determining submodule, used to determine that the air conditioner evaporator has a dirt blockage problem when the first actual pipe temperature is higher than the standard pipe temperature, the Nth actual pipe temperature is higher than the (N-1)th actual pipe temperature, and the difference between the last actual pipe temperature and the standard pipe temperature is greater than or equal to a second preset difference, where N≥2. This allows for more accurate determination of whether the air conditioner evaporator has a dirt blockage problem in cooling mode, dehumidification mode, and heating mode, avoiding misjudgments due to errors.

[0084] In an optional embodiment, the device further includes a first acquisition module and a third determination module. The first acquisition module is used to acquire the outdoor ambient temperature of the air conditioner when the operating mode is heating mode, before acquiring the standard pipe temperature of the air conditioner evaporator during multiple operating modes. The third determination module is used to determine the standard pipe temperature of the air conditioner evaporator during multiple operating modes when the outdoor ambient temperature is greater than or equal to a preset outer ring temperature, where the preset outer ring temperature is a preset value of the outdoor ambient temperature of the air conditioner. When the air conditioner is operating in heating mode, considering that the air conditioner will enter periodic defrosting when the outer ring temperature is low, resulting in large fluctuations in the indoor pipe temperature, judging the problem of dirt blockage based on the air conditioner evaporator pipe temperature when the outdoor ambient temperature is greater than or equal to the preset outer ring temperature will be more accurate, reducing the pipe temperature error caused by defrosting.

[0085] As an optional solution, the aforementioned operating modes include a cooling mode, a dehumidification mode, and a heating mode. The cooling mode further includes multiple first sub-modes, and the heating mode includes multiple second sub-modes. The device also includes a second acquisition module and a fourth determination module. The second acquisition module acquires the inner and outer ring temperatures, fan speed, and compressor frequency of the air conditioner at the current moment. The fourth determination module determines the operating mode of the air conditioner at the current moment based on these parameters. This allows for comparison based on different operating modes, enabling a more accurate determination of whether the air conditioner evaporator is clogged, and avoiding errors in judgment due to different operating modes.

[0086] The aforementioned device for determining the problem of dirt blockage in the air conditioner evaporator includes a processor and a memory. The first acquisition unit and other components are stored as program units in the memory, and the processor executes these program units to achieve the corresponding functions. All of the above modules reside in the same processor; alternatively, the modules may be located in different processors in any combination.

[0087] The processor contains a kernel, which retrieves the corresponding program units from memory. One or more kernels can be configured, and adjusting kernel parameters can address the problem of existing technologies failing to detect evaporator surface clogging in a timely and accurate manner.

[0088] The memory may include non-permanent memory in computer-readable media, such as random access memory (RAM) and / or non-volatile memory, such as read-only memory (ROM) or flash RAM, and the memory includes at least one memory chip.

[0089] This invention provides a computer-readable storage medium including a stored program, wherein, when the program is executed, it controls the device containing the computer-readable storage medium to perform the method for determining the dirt blockage problem of the air conditioner evaporator.

[0090] Specifically, methods for identifying dirt and blockage in air conditioner evaporators include:

[0091] Step S201: Obtain the standard pipe temperature of the air conditioner evaporator when the air conditioner is running in multiple operating modes. The standard pipe temperature of the air conditioner evaporator is the pipe temperature of the air conditioner evaporator when the cumulative running time of the air conditioner in the above operating modes is less than or equal to a preset time threshold.

[0092] Specifically, after the air conditioner is powered on, it is turned on using the remote control. When the air conditioner is running in different operating modes for the first time, the indoor fan speed and compressor operating frequency will be forced into different operating levels for 2 hours. During the last 30 minutes of these 2 hours, the system will record the average pipe temperature of the air conditioner evaporator and determine the average value of the corresponding operating mode as the standard pipe temperature of the corresponding air conditioner evaporator. Generally, the preset duration threshold is set to 240 hours, but the specific setting value can be changed according to the actual application.

[0093] Step S202: Obtain the actual pipe temperature of the air conditioner evaporator when the air conditioner is running in each of the above-mentioned operating modes. The actual pipe temperature of the air conditioner evaporator is the pipe temperature of the air conditioner evaporator when the cumulative running time of the air conditioner in the above-mentioned operating modes is greater than the preset time threshold.

[0094] Specifically, obtaining the actual pipe temperature of the air conditioner evaporator can determine the actual operating status of the air conditioner evaporator at the current moment. There may be multiple actual pipe temperatures in a certain operating mode (e.g., 4, 5, etc.), which can more accurately determine the actual operating status of the air conditioner evaporator.

[0095] Step S203: Based on the standard pipe temperature and the actual pipe temperature of the air conditioner under each of the above operating modes, determine whether the air conditioner evaporator has a dirt blockage problem.

[0096] Specifically, by comparing the standard pipe temperature with the actual pipe temperature, the evaporator can be checked regularly for dirt and blockage, and users can be reminded in a timely manner to complete the cleaning and avoid a decrease in heat exchanger efficiency.

[0097] Optionally, obtaining the standard pipe temperature of the air conditioner evaporator when the air conditioner is running in multiple operating modes includes: when the first running time of the air conditioner reaches a first preset time period, calculating the average first pipe temperature of the air conditioner evaporator within a first preset time period, and determining the average first pipe temperature as the standard pipe temperature of the air conditioner evaporator, wherein the first running time is the running time calculated from the start time of the air conditioner running in the operating mode, the first preset time period is less than the preset time period threshold, and the start time of the first preset time period is the moment when the first running time of the air conditioner reaches the first preset time period.

[0098] Optionally, there are multiple actual pipe temperatures. Obtaining the actual pipe temperature of the air conditioner evaporator when the air conditioner is running in each of the above-mentioned operating modes includes: when the second running time of the air conditioner reaches the second preset time, calculating the average value of the second pipe temperature of the air conditioner evaporator once every second preset time period to obtain multiple average values ​​of the second pipe temperature, and determining each average value of the second pipe temperature as the actual pipe temperature of each of the above-mentioned air conditioner evaporators. The second running time is the running time calculated from the start time of the air conditioner running in the above-mentioned operating mode again after the cumulative running time of the air conditioner reaches the preset time threshold.

[0099] Optionally, determining whether the air conditioner evaporator has a dirt blockage problem based on the standard pipe temperature and the actual pipe temperature of the air conditioner in each of the above operating modes includes: determining that the air conditioner evaporator has a dirt blockage problem when the operating mode is cooling mode or dehumidification mode and the actual pipe temperature is lower than the standard pipe temperature; determining that the air conditioner evaporator has a dirt blockage problem when the operating mode is heating mode and the actual pipe temperature is higher than the standard pipe temperature.

[0100] Optionally, the air conditioner evaporator has N actual pipe temperatures, arranged in chronological order of acquisition. When the operating mode is cooling or dehumidification, and the actual pipe temperature is lower than the standard pipe temperature, the air conditioner evaporator is determined to have a blockage problem. This includes determining that the air conditioner evaporator has a blockage problem when the first actual pipe temperature is lower than the standard pipe temperature, the Nth actual pipe temperature is lower than the (N-1)th actual pipe temperature, and the difference between the standard pipe temperature and the last actual pipe temperature is greater than or equal to a first preset difference, where N ≥ 2. Alternatively, when the operating mode is heating, and the actual pipe temperature is higher than the standard pipe temperature, the air conditioner evaporator is determined to have a blockage problem when the first actual pipe temperature is higher than the standard pipe temperature, the Nth actual pipe temperature is higher than the (N-1)th actual pipe temperature, and the difference between the last actual pipe temperature and the standard pipe temperature is greater than or equal to a second preset difference, where N ≥ 2.

[0101] Optionally, before obtaining the standard pipe temperature of the air conditioner evaporator when the air conditioner is running in multiple operating modes, the method further includes: obtaining the outdoor ambient temperature of the air conditioner when the operating mode is heating mode; and determining the standard pipe temperature of the air conditioner evaporator when the outdoor ambient temperature is greater than or equal to a preset outer ring temperature, wherein the preset outer ring temperature is a preset value of the outdoor ambient temperature of the air conditioner.

[0102] Optionally, the multiple operating modes are cooling mode, dehumidification mode, and heating mode. The cooling mode further includes multiple first sub-modes, and the heating mode includes multiple second sub-modes. The method further includes: obtaining the inner ring temperature, outer ring temperature, fan speed, and compressor frequency of the air conditioner at the current moment; and determining the operating mode of the air conditioner at the current moment based on the inner ring temperature, outer ring temperature, fan speed, and compressor frequency of the air conditioner at the current moment.

[0103] This invention provides a processor for running a program, wherein the program executes the method for determining the dirt blockage problem of the air conditioner evaporator.

[0104] Specifically, methods for identifying dirt and blockage in air conditioner evaporators include:

[0105] Step S201: Obtain the standard pipe temperature of the air conditioner evaporator when the air conditioner is running in multiple operating modes. The standard pipe temperature of the air conditioner evaporator is the pipe temperature of the air conditioner evaporator when the cumulative running time of the air conditioner in the above operating modes is less than or equal to a preset time threshold.

[0106] Specifically, after the air conditioner is powered on, it is turned on using the remote control. When the air conditioner is running in different operating modes for the first time, the indoor fan speed and compressor operating frequency will be forced into different operating levels for 2 hours. During the last 30 minutes of these 2 hours, the system will record the average pipe temperature of the air conditioner evaporator and determine the average value of the corresponding operating mode as the standard pipe temperature of the corresponding air conditioner evaporator. Generally, the preset duration threshold is set to 240 hours, but the specific setting value can be changed according to the actual application.

[0107] Step S202: Obtain the actual pipe temperature of the air conditioner evaporator when the air conditioner is running in each of the above-mentioned operating modes. The actual pipe temperature of the air conditioner evaporator is the pipe temperature of the air conditioner evaporator when the cumulative running time of the air conditioner in the above-mentioned operating modes is greater than the preset time threshold.

[0108] Specifically, obtaining the actual pipe temperature of the air conditioner evaporator can determine the actual operating status of the air conditioner evaporator at the current moment. There may be multiple actual pipe temperatures in a certain operating mode (e.g., 4, 5, etc.), which can more accurately determine the actual operating status of the air conditioner evaporator.

[0109] Step S203: Based on the standard pipe temperature and the actual pipe temperature of the air conditioner under each of the above operating modes, determine whether the air conditioner evaporator has a dirt blockage problem.

[0110] Specifically, by comparing the standard pipe temperature with the actual pipe temperature, the evaporator can be checked regularly for dirt and blockage, and users can be reminded in a timely manner to complete the cleaning and avoid a decrease in heat exchanger efficiency.

[0111] Optionally, obtaining the standard pipe temperature of the air conditioner evaporator when the air conditioner is running in multiple operating modes includes: when the first running time of the air conditioner reaches a first preset time period, calculating the average first pipe temperature of the air conditioner evaporator within a first preset time period, and determining the average first pipe temperature as the standard pipe temperature of the air conditioner evaporator, wherein the first running time is the running time calculated from the start time of the air conditioner running in the operating mode, the first preset time period is less than the preset time period threshold, and the start time of the first preset time period is the moment when the first running time of the air conditioner reaches the first preset time period.

[0112] Optionally, there are multiple actual pipe temperatures. Obtaining the actual pipe temperature of the air conditioner evaporator when the air conditioner is running in each of the above-mentioned operating modes includes: when the second running time of the air conditioner reaches the second preset time, calculating the average value of the second pipe temperature of the air conditioner evaporator once every second preset time period to obtain multiple average values ​​of the second pipe temperature, and determining each average value of the second pipe temperature as the actual pipe temperature of each of the above-mentioned air conditioner evaporators. The second running time is the running time calculated from the start time of the air conditioner running in the above-mentioned operating mode again after the cumulative running time of the air conditioner reaches the preset time threshold.

[0113] Optionally, determining whether the air conditioner evaporator has a dirt blockage problem based on the standard pipe temperature and the actual pipe temperature of the air conditioner in each of the above operating modes includes: determining that the air conditioner evaporator has a dirt blockage problem when the operating mode is cooling mode or dehumidification mode and the actual pipe temperature is lower than the standard pipe temperature; determining that the air conditioner evaporator has a dirt blockage problem when the operating mode is heating mode and the actual pipe temperature is higher than the standard pipe temperature.

[0114] Optionally, the air conditioner evaporator has N actual pipe temperatures, arranged in chronological order of acquisition. When the operating mode is cooling or dehumidification, and the actual pipe temperature is lower than the standard pipe temperature, the air conditioner evaporator is determined to have a blockage problem. This includes determining that the air conditioner evaporator has a blockage problem when the first actual pipe temperature is lower than the standard pipe temperature, the Nth actual pipe temperature is lower than the (N-1)th actual pipe temperature, and the difference between the standard pipe temperature and the last actual pipe temperature is greater than or equal to a first preset difference, where N ≥ 2. Alternatively, when the operating mode is heating, and the actual pipe temperature is higher than the standard pipe temperature, the air conditioner evaporator is determined to have a blockage problem when the first actual pipe temperature is higher than the standard pipe temperature, the Nth actual pipe temperature is higher than the (N-1)th actual pipe temperature, and the difference between the last actual pipe temperature and the standard pipe temperature is greater than or equal to a second preset difference, where N ≥ 2.

[0115] Optionally, before obtaining the standard pipe temperature of the air conditioner evaporator when the air conditioner is running in multiple operating modes, the method further includes: obtaining the outdoor ambient temperature of the air conditioner when the operating mode is heating mode; and determining the standard pipe temperature of the air conditioner evaporator when the outdoor ambient temperature is greater than or equal to a preset outer ring temperature, wherein the preset outer ring temperature is a preset value of the outdoor ambient temperature of the air conditioner.

[0116] Optionally, the multiple operating modes are cooling mode, dehumidification mode, and heating mode. The cooling mode further includes multiple first sub-modes, and the heating mode includes multiple second sub-modes. The method further includes: obtaining the inner ring temperature, outer ring temperature, fan speed, and compressor frequency of the air conditioner at the current moment; and determining the operating mode of the air conditioner at the current moment based on the inner ring temperature, outer ring temperature, fan speed, and compressor frequency of the air conditioner at the current moment.

[0117] This invention provides a device including a processor, a memory, and a program stored in the memory and executable on the processor. When the processor executes the program, it performs at least the following steps:

[0118] Step S201: Obtain the standard pipe temperature of the air conditioner evaporator when the air conditioner is running in multiple operating modes. The standard pipe temperature of the air conditioner evaporator is the pipe temperature of the air conditioner evaporator when the cumulative running time of the air conditioner in the above operating modes is less than or equal to a preset time threshold.

[0119] Step S202: Obtain the actual pipe temperature of the air conditioner evaporator when the air conditioner is running in each of the above-mentioned operating modes. The actual pipe temperature of the air conditioner evaporator is the pipe temperature of the air conditioner evaporator when the cumulative running time of the air conditioner in the above-mentioned operating modes is greater than the preset time threshold.

[0120] Step S203: Based on the standard pipe temperature and the actual pipe temperature of the air conditioner under each of the above operating modes, determine whether the air conditioner evaporator has a dirt blockage problem.

[0121] The devices mentioned in this article can be servers, PCs, tablets, mobile phones, etc.

[0122] Optionally, obtaining the standard pipe temperature of the air conditioner evaporator when the air conditioner is running in multiple operating modes includes: when the first running time of the air conditioner reaches a first preset time period, calculating the average first pipe temperature of the air conditioner evaporator within a first preset time period, and determining the average first pipe temperature as the standard pipe temperature of the air conditioner evaporator, wherein the first running time is the running time calculated from the start time of the air conditioner running in the operating mode, the first preset time period is less than the preset time period threshold, and the start time of the first preset time period is the moment when the first running time of the air conditioner reaches the first preset time period.

[0123] Optionally, there are multiple actual pipe temperatures. Obtaining the actual pipe temperature of the air conditioner evaporator when the air conditioner is running in each of the above-mentioned operating modes includes: when the second running time of the air conditioner reaches the second preset time, calculating the average value of the second pipe temperature of the air conditioner evaporator once every second preset time period to obtain multiple average values ​​of the second pipe temperature, and determining each average value of the second pipe temperature as the actual pipe temperature of each of the above-mentioned air conditioner evaporators. The second running time is the running time calculated from the start time of the air conditioner running in the above-mentioned operating mode again after the cumulative running time of the air conditioner reaches the preset time threshold.

[0124] Optionally, determining whether the air conditioner evaporator has a dirt blockage problem based on the standard pipe temperature and the actual pipe temperature of the air conditioner in each of the above operating modes includes: determining that the air conditioner evaporator has a dirt blockage problem when the operating mode is cooling mode or dehumidification mode and the actual pipe temperature is lower than the standard pipe temperature; determining that the air conditioner evaporator has a dirt blockage problem when the operating mode is heating mode and the actual pipe temperature is higher than the standard pipe temperature.

[0125] Optionally, the air conditioner evaporator has N actual pipe temperatures, arranged in chronological order of acquisition. When the operating mode is cooling or dehumidification, and the actual pipe temperature is lower than the standard pipe temperature, the air conditioner evaporator is determined to have a blockage problem. This includes determining that the air conditioner evaporator has a blockage problem when the first actual pipe temperature is lower than the standard pipe temperature, the Nth actual pipe temperature is lower than the (N-1)th actual pipe temperature, and the difference between the standard pipe temperature and the last actual pipe temperature is greater than or equal to a first preset difference, where N ≥ 2. Alternatively, when the operating mode is heating, and the actual pipe temperature is higher than the standard pipe temperature, the air conditioner evaporator is determined to have a blockage problem when the first actual pipe temperature is higher than the standard pipe temperature, the Nth actual pipe temperature is higher than the (N-1)th actual pipe temperature, and the difference between the last actual pipe temperature and the standard pipe temperature is greater than or equal to a second preset difference, where N ≥ 2.

[0126] Optionally, before obtaining the standard pipe temperature of the air conditioner evaporator when the air conditioner is running in multiple operating modes, the method further includes: obtaining the outdoor ambient temperature of the air conditioner when the operating mode is heating mode; and determining the standard pipe temperature of the air conditioner evaporator when the outdoor ambient temperature is greater than or equal to a preset outer ring temperature, wherein the preset outer ring temperature is a preset value of the outdoor ambient temperature of the air conditioner.

[0127] Optionally, the multiple operating modes are cooling mode, dehumidification mode, and heating mode. The cooling mode further includes multiple first sub-modes, and the heating mode includes multiple second sub-modes. The method further includes: obtaining the inner ring temperature, outer ring temperature, fan speed, and compressor frequency of the air conditioner at the current moment; and determining the operating mode of the air conditioner at the current moment based on the inner ring temperature, outer ring temperature, fan speed, and compressor frequency of the air conditioner at the current moment.

[0128] This application also provides a computer program product, which, when executed on a data processing device, is suitable for executing an initialization program having at least the following method steps:

[0129] Step S201: Obtain the standard pipe temperature of the air conditioner evaporator when the air conditioner is running in multiple operating modes. The standard pipe temperature of the air conditioner evaporator is the pipe temperature of the air conditioner evaporator when the cumulative running time of the air conditioner in the above operating modes is less than or equal to a preset time threshold.

[0130] Step S202: Obtain the actual pipe temperature of the air conditioner evaporator when the air conditioner is running in each of the above-mentioned operating modes. The actual pipe temperature of the air conditioner evaporator is the pipe temperature of the air conditioner evaporator when the cumulative running time of the air conditioner in the above-mentioned operating modes is greater than the preset time threshold.

[0131] Step S203: Based on the standard pipe temperature and the actual pipe temperature of the air conditioner under each of the above operating modes, determine whether the air conditioner evaporator has a dirt blockage problem.

[0132] Optionally, obtaining the standard pipe temperature of the air conditioner evaporator when the air conditioner is running in multiple operating modes includes: when the first running time of the air conditioner reaches a first preset time period, calculating the average first pipe temperature of the air conditioner evaporator within a first preset time period, and determining the average first pipe temperature as the standard pipe temperature of the air conditioner evaporator, wherein the first running time is the running time calculated from the start time of the air conditioner running in the operating mode, the first preset time period is less than the preset time period threshold, and the start time of the first preset time period is the moment when the first running time of the air conditioner reaches the first preset time period.

[0133] Optionally, there are multiple actual pipe temperatures. Obtaining the actual pipe temperature of the air conditioner evaporator when the air conditioner is running in each of the above-mentioned operating modes includes: when the second running time of the air conditioner reaches the second preset time, calculating the average value of the second pipe temperature of the air conditioner evaporator once every second preset time period to obtain multiple average values ​​of the second pipe temperature, and determining each average value of the second pipe temperature as the actual pipe temperature of each of the above-mentioned air conditioner evaporators. The second running time is the running time calculated from the start time of the air conditioner running in the above-mentioned operating mode again after the cumulative running time of the air conditioner reaches the preset time threshold.

[0134] Optionally, determining whether the air conditioner evaporator has a dirt blockage problem based on the standard pipe temperature and the actual pipe temperature of the air conditioner in each of the above operating modes includes: determining that the air conditioner evaporator has a dirt blockage problem when the operating mode is cooling mode or dehumidification mode and the actual pipe temperature is lower than the standard pipe temperature; determining that the air conditioner evaporator has a dirt blockage problem when the operating mode is heating mode and the actual pipe temperature is higher than the standard pipe temperature.

[0135] Optionally, the air conditioner evaporator has N actual pipe temperatures, arranged in chronological order of acquisition. When the operating mode is cooling or dehumidification, and the actual pipe temperature is lower than the standard pipe temperature, the air conditioner evaporator is determined to have a blockage problem. This includes determining that the air conditioner evaporator has a blockage problem when the first actual pipe temperature is lower than the standard pipe temperature, the Nth actual pipe temperature is lower than the (N-1)th actual pipe temperature, and the difference between the standard pipe temperature and the last actual pipe temperature is greater than or equal to a first preset difference, where N ≥ 2. Alternatively, when the operating mode is heating, and the actual pipe temperature is higher than the standard pipe temperature, the air conditioner evaporator is determined to have a blockage problem when the first actual pipe temperature is higher than the standard pipe temperature, the Nth actual pipe temperature is higher than the (N-1)th actual pipe temperature, and the difference between the last actual pipe temperature and the standard pipe temperature is greater than or equal to a second preset difference, where N ≥ 2.

[0136] Optionally, before obtaining the standard pipe temperature of the air conditioner evaporator when the air conditioner is running in multiple operating modes, the method further includes: obtaining the outdoor ambient temperature of the air conditioner when the operating mode is heating mode; and determining the standard pipe temperature of the air conditioner evaporator when the outdoor ambient temperature is greater than or equal to a preset outer ring temperature, wherein the preset outer ring temperature is a preset value of the outdoor ambient temperature of the air conditioner.

[0137] Optionally, the multiple operating modes are cooling mode, dehumidification mode, and heating mode. The cooling mode further includes multiple first sub-modes, and the heating mode includes multiple second sub-modes. The method further includes: obtaining the inner ring temperature, outer ring temperature, fan speed, and compressor frequency of the air conditioner at the current moment; and determining the operating mode of the air conditioner at the current moment based on the inner ring temperature, outer ring temperature, fan speed, and compressor frequency of the air conditioner at the current moment.

[0138] It is obvious to those skilled in the art that the modules or steps of the present invention described above can be implemented using general-purpose computing devices. They can be centralized on a single computing device or distributed across a network of multiple computing devices. They can be implemented using computer-executable program code, and thus can be stored in a storage device for execution by a computing device. In some cases, the steps shown or described can be performed in a different order than those described herein, or they can be fabricated as separate integrated circuit modules, or multiple modules or steps can be fabricated as a single integrated circuit module. Thus, the present invention is not limited to any particular combination of hardware and software.

[0139] Those skilled in the art will understand that embodiments of this application can be provided as methods, systems, or computer program products. Therefore, this application can take the form of a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, this application can take the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0140] This application is described with reference to flowchart illustrations and / or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of this application. It will be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, special-purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, generate instructions for implementing the flowchart... Figure 1 One or more processes and / or boxes Figure 1 A device that provides the functions specified in one or more boxes.

[0141] These computer program instructions may also be stored in a computer-readable storage medium that can direct a computer or other programmable data processing device to function in a particular manner, such that the instructions stored in the computer-readable storage medium produce an article of manufacture including instruction means, which are implemented in a process Figure 1 One or more processes and / or boxes Figure 1 The function specified in one or more boxes.

[0142] These computer program instructions may also be loaded onto a computer or other programmable data processing equipment to cause a series of operational steps to be performed on the computer or other programmable equipment to produce a computer-implemented process, thereby providing instructions that execute on the computer or other programmable equipment for implementing the process. Figure 1 One or more processes and / or boxes Figure 1 The steps of the function specified in one or more boxes.

[0143] In a typical configuration, a computing device includes one or more processors (CPU), input / output interfaces, network interfaces, and memory.

[0144] Memory may include non-persistent memory in computer-readable media, such as random access memory (RAM) and / or non-volatile memory, such as read-only memory (ROM) or flash RAM. Memory is an example of computer-readable media.

[0145] Computer-readable media includes both permanent and non-permanent, removable and non-removable media that can store information using any method or technology. Information can be computer-readable instructions, data structures, modules of programs, or other data. Examples of computer storage media include, but are not limited to, phase-change memory (PRAM), static random access memory (SRAM), dynamic random access memory (DRAM), other types of random access memory (RAM), read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM), flash memory or other memory technologies, CD-ROM, digital versatile optical disc (DVD) or other optical storage, magnetic tape, magnetic magnetic disk storage or other magnetic storage devices, or any other non-transferable medium that can be used to store information accessible by a computing device. As defined herein, computer-readable media does not include transient computer-readable media, such as modulated data signals and carrier waves.

[0146] It should also be noted that the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus. Unless otherwise specified, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element.

[0147] As can be seen from the above description, the embodiments of this application achieve the following technical effects:

[0148] 1) The method for determining the evaporator clogging problem described in this application first obtains the standard pipe temperature of the evaporator when the air conditioner is running in multiple operating modes. The standard pipe temperature is the pipe temperature of the evaporator when the cumulative running time of the evaporator in each operating mode is less than or equal to a preset time threshold. Then, the actual pipe temperature of the evaporator is obtained when the cumulative running time of the evaporator in each operating mode is greater than the preset time threshold. Finally, based on the difference between the standard pipe temperature and the actual pipe temperature in each operating mode, it is determined whether the evaporator has a clogging problem. This method, through setting parameters such as pipe temperature, periodically checks for evaporator clogging problems, promptly reminds users to clean the evaporator, and avoids problems caused by the inability to accurately and timely detect evaporator clogging in the heat exchanger, thus solving the problem in existing technologies where evaporator surface clogging cannot be detected in a timely manner.

[0149] 2) The device for determining the evaporator clogging problem of the air conditioner described in this application includes a first acquisition unit, a second acquisition unit, and a determination unit. The first acquisition unit is used to acquire the standard pipe temperature of the air conditioner evaporator when the air conditioner is running in multiple operating modes. The standard pipe temperature of the air conditioner evaporator is the pipe temperature of the air conditioner evaporator when the cumulative running time of the air conditioner in each operating mode is less than or equal to a preset time threshold. The second acquisition unit is used to acquire the actual pipe temperature of the air conditioner evaporator when the air conditioner is running in each operating mode. The actual pipe temperature of the air conditioner evaporator is the pipe temperature of the air conditioner evaporator when the cumulative running time of the air conditioner in each operating mode is greater than the preset time threshold. The determination unit is used to determine whether the air conditioner evaporator has a clogging problem based on the difference between the standard pipe temperature and the actual pipe temperature of the air conditioner in each operating mode. This device, through setting parameters such as pipe temperature, periodically checks for evaporator clogging problems, promptly reminds users to clean the evaporator, and avoids problems caused by the inability to accurately and timely detect evaporator surface clogging in the heat exchanger, thus solving the problem in the prior art where evaporator surface clogging problems cannot be detected in a timely manner.

[0150] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A method for determining the problem of dirt blockage in an air conditioner evaporator, characterized in that, include: The standard pipe temperature of the air conditioner evaporator is obtained when the air conditioner is running in multiple operating modes. The standard pipe temperature of the air conditioner evaporator is the pipe temperature of the air conditioner evaporator when the cumulative running time of the air conditioner in the operating mode is less than or equal to a preset time threshold. The actual pipe temperature of the air conditioner evaporator is obtained when the air conditioner is running in each of the operating modes. The actual pipe temperature of the air conditioner evaporator is the pipe temperature of the air conditioner evaporator when the cumulative running time of the air conditioner in the operating mode is greater than the preset time threshold. Based on the standard pipe temperature and the actual pipe temperature of the air conditioner in each of the aforementioned operating modes, determine whether the air conditioner evaporator has a dirt or blockage problem; Based on the standard pipe temperature and the actual pipe temperature of the air conditioner in each of the aforementioned operating modes, determine whether the air conditioner evaporator has a dirt or blockage problem, including: If the operating mode is cooling mode or dehumidification mode, and the actual pipe temperature is lower than the standard pipe temperature, it is determined that the air conditioner evaporator has the problem of dirt blockage. If the operating mode is heating mode and the actual pipe temperature is greater than the standard pipe temperature, it is determined that the air conditioner evaporator has the problem of dirt blockage. There are N actual pipe temperatures of the air conditioner evaporator, and these N actual pipe temperatures are arranged in the order they were obtained. When the operating mode is cooling mode or dehumidification mode, and the actual pipe temperature is less than the standard pipe temperature, it is determined that the air conditioner evaporator has a dirt blockage problem, including: when the first actual pipe temperature is less than the standard pipe temperature, the Nth actual pipe temperature is less than the N-1th actual pipe temperature, and the difference between the standard pipe temperature and the last actual pipe temperature is greater than or equal to a first preset difference, it is determined that the air conditioner evaporator has a dirt blockage problem, where N≥2; or, When the operating mode is heating mode and the actual pipe temperature is greater than the standard pipe temperature, it is determined that the air conditioner evaporator has a dirt blockage problem, including: when the first actual pipe temperature is greater than the standard pipe temperature, the Nth actual pipe temperature is greater than the (N-1)th actual pipe temperature, and the difference between the last actual pipe temperature and the standard pipe temperature is greater than or equal to a second preset difference, it is determined that the air conditioner evaporator has a dirt blockage problem, where N≥2.

2. The determination method according to claim 1, characterized in that, Obtain the standard pipe temperature of the air conditioner evaporator when the air conditioner is running in multiple operating modes, including: When the first running time of the air conditioner reaches the first preset time, the first average pipe temperature of the air conditioner evaporator within the first preset time period is calculated, and the first average pipe temperature is determined as the standard pipe temperature of the air conditioner evaporator. The first running time is the running time calculated from the start time of the air conditioner running in the operating mode. The first preset time is less than the preset time threshold. The start time of the first preset time period is the time when the first running time of the air conditioner reaches the first preset time.

3. The determination method according to claim 1, characterized in that, There are multiple actual pipe temperatures. The actual pipe temperature of the air conditioner evaporator is obtained when the air conditioner is running in each of the aforementioned operating modes, including: When the second running time of the air conditioner reaches the second preset time, the second average pipe temperature of the air conditioner evaporator is calculated once every second preset time period to obtain multiple second average pipe temperatures, and each second average pipe temperature is determined as the actual pipe temperature of each air conditioner evaporator. The second running time is the running time calculated from the start time of the air conditioner running in the operating mode again after the cumulative running time of the air conditioner reaches the preset time threshold.

4. The determining method according to any one of claims 1 to 3, characterized in that, Before obtaining the standard pipe temperature of the air conditioner evaporator when the air conditioner is operating in multiple operating modes, the method further includes: When the operating mode is heating mode, the outdoor ambient temperature of the air conditioner is obtained; When the outdoor ambient temperature is greater than or equal to the preset outer ring temperature, the standard pipe temperature of the air conditioner evaporator is determined when the air conditioner is running in multiple operating modes. The preset outer ring temperature is the preset value of the outdoor ambient temperature of the air conditioner.

5. The determining method according to any one of claims 1 to 3, characterized in that, The multiple operating modes are a cooling mode, a dehumidification mode, and a heating mode, wherein the cooling mode further includes multiple first sub-modes, the heating mode includes multiple second sub-modes, and the method further includes: Obtain the inner ring temperature, outer ring temperature, fan speed, and compressor frequency of the air conditioner at the current moment; The operating mode of the air conditioner at the current moment is determined based on the inner ring temperature, outer ring temperature, fan speed, and compressor frequency.

6. A device for determining the problem of dirt blockage in an air conditioner evaporator, characterized in that, include: The first acquisition unit is used to acquire the standard pipe temperature of the air conditioner evaporator when the air conditioner is running in multiple operating modes. The standard pipe temperature of the air conditioner evaporator is the pipe temperature of the air conditioner evaporator when the cumulative running time of the air conditioner in the operating mode is less than or equal to a preset time threshold. The second acquisition unit is used to acquire the actual pipe temperature of the air conditioner evaporator when the air conditioner is running in each of the operating modes. The actual pipe temperature of the air conditioner evaporator is the pipe temperature of the air conditioner evaporator when the cumulative running time of the air conditioner in the operating mode is greater than the preset time threshold. The determining unit is used to determine whether the air conditioner evaporator has a dirt blockage problem based on the standard pipe temperature and the actual pipe temperature of the air conditioner in each of the said operating modes. The determining unit includes: The first determining module is used to determine that the air conditioner evaporator has the dirt blockage problem when the operating mode is cooling mode or dehumidification mode and the actual pipe temperature is less than the standard pipe temperature. The second determining module is used to determine that the air conditioner evaporator has the dirt blockage problem when the operating mode is heating mode and the actual pipe temperature is greater than the standard pipe temperature. The air conditioner evaporator has N actual pipe temperatures, which are arranged in chronological order of acquisition. The first determining module includes a first determining submodule, used to determine that the air conditioner evaporator has a dirt blockage problem when the first actual pipe temperature is less than the standard pipe temperature, the Nth actual pipe temperature is less than the (N-1)th actual pipe temperature, and the difference between the standard pipe temperature and the last actual pipe temperature is greater than or equal to a first preset difference, where N≥2. The second determining module includes a second determining submodule, used to determine that the air conditioner evaporator has a dirt blockage problem when the first actual pipe temperature is greater than the standard pipe temperature, the Nth actual pipe temperature is greater than the (N-1)th actual pipe temperature, and the difference between the last actual pipe temperature and the standard pipe temperature is greater than or equal to a second preset difference, where N≥2.

7. A computer-readable storage medium, characterized in that, The computer-readable storage medium includes a stored program, wherein, when the program is executed, it controls the device on which the computer-readable storage medium is located to perform the method for determining the dirt blockage problem of the air conditioner evaporator as described in any one of claims 1 to 5.

8. An electronic device, characterized in that, include: One or more processors, a memory, and one or more programs, wherein the one or more programs are stored in the memory and configured to be executed by the one or more processors, the one or more programs including a method for performing a method for determining a clogging problem in an air conditioner evaporator as described in any one of claims 1 to 5.

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