Methods, devices, equipment, and storage media for cleaning clogged refrigerant pipes

Abstract

This invention relates to the field of air conditioning control technology, and in particular to a method, apparatus, equipment, and storage medium for cleaning refrigerant pipe blockages. The method limits the triggering and execution of the blockage-clearing mode to the air conditioner's off state, avoiding conflicts between the cleaning process and normal air conditioner use, and preventing component malfunctions caused by mode switching. Furthermore, it employs a cleaning logic that alternates between heating and cooling operation, repeatedly flushing the pipes through a preset number of cycles, solving the problem of poor adaptability of fixed cleaning cycles. The method requires no manual intervention from mode triggering and alternating operation to automatic exit, avoiding secondary faults such as pipe seal damage and refrigerant leakage caused by disassembly, effectively restoring refrigerant flow, improving air conditioning cooling and heating efficiency, reducing equipment energy consumption, and extending the overall service life of the air conditioner. In addition, it eliminates the need to modify the original hardware structure of the air conditioner, reducing labor and hardware modification costs for pipe maintenance.

Description

Technical Field

[0001] This invention relates to the field of air conditioning control technology, and in particular to a method, apparatus, equipment and storage medium for cleaning refrigerant pipeline blockages. Background Technology

[0002] When an air conditioner runs continuously for a long time, it is affected by a variety of factors, such as the gradual deposition of impurities in the refrigerant, the intrusion of dust and pollutants from the external environment into the system, and the condensation and oxidation of moisture in the pipes due to temperature differences. These factors will gradually accumulate and cause blockage of the refrigerant pipes. The degree of blockage may increase from slight flow resistance to complete blockage, which will seriously affect the cooling efficiency, energy consumption and equipment life of the air conditioner.

[0003] In existing technologies, the main way to deal with pipe blockages is through manual disassembly and cleaning. This method requires technicians to disassemble air conditioning components and manually remove the blockages. However, this process is cumbersome, involves specialized tools and long downtime, resulting in high maintenance costs. At the same time, if the disassembly is not done carefully enough, it can easily cause the sealing rings at the pipe connections to age or be damaged, which can lead to secondary problems such as refrigerant leakage and system performance degradation, increasing long-term operational risks.

[0004] It is evident that existing technologies still need improvement and enhancement. Summary of the Invention

[0005] In order to overcome the shortcomings of the existing technology, the purpose of this invention is to provide a method for cleaning refrigerant pipe blockages, which can achieve fully automated cleaning of refrigerant pipe blockages without disassembling the unit. This method avoids secondary failures such as pipe seal damage and refrigerant leakage caused by disassembly operations, and can effectively restore the flow of refrigerant pipes and improve the cooling and heating efficiency of air conditioning.

[0006] The first aspect of this invention provides a method for clearing refrigerant pipe blockages, comprising: when the air conditioner is in a powered-off state, determining whether a blockage clearing mode is triggered; if the blockage clearing mode is triggered, acquiring preset heating operation parameters and heating operation duration, generating a heating operation command based on the heating operation parameters to control the air conditioner to enter the heating operation state; when the heating operation duration ends, acquiring preset cooling operation parameters and cooling operation duration, generating a cooling operation command based on the cooling operation parameters to control the air conditioner to switch to the cooling operation state; and after completing a preset number of heating operation cycles and cooling operation cycles, controlling the air conditioner to exit the blockage clearing mode.

[0007] Optionally, in a first implementation of the first aspect of the present invention, determining whether to trigger the blockage clearing mode when the air conditioner is in a powered-off state includes: when the air conditioner is in a powered-off state, acquiring the operating parameters of the air conditioner before it is powered off, the operating parameters including refrigerant pipeline pressure difference, compressor operating current and outlet-return air temperature difference; acquiring a preset set of normal thresholds corresponding to the operating parameters, comparing the deviation of the operating parameters from the normal thresholds to determine whether there is a risk of pipeline blockage; if it is determined that there is a risk of pipeline blockage, then triggering the blockage clearing mode; or when the air conditioner is in a powered-off state, if a trigger command is received from the user, then triggering the blockage clearing mode.

[0008] Optionally, in a second implementation of the first aspect of the present invention, after triggering the blockage clearing mode, the method further includes: obtaining a debug code corresponding to the blockage clearing mode and a preset mode feedback rule; generating a display command based on the debug code and generating a buzzer command based on the mode feedback rule; and adjusting the working state of the air conditioner based on the display command and the buzzer command to achieve mode operation feedback.

[0009] Optionally, in a third implementation of the first aspect of the present invention, the step of obtaining preset heating operation parameters and heating operation duration if the blockage clearing mode is triggered, and generating a heating operation command based on the heating operation parameters to control the air conditioner to enter the heating operation state, includes: obtaining preset heating operation parameters and heating operation duration if the blockage clearing mode is triggered, wherein the heating operation parameters include the heating set temperature, the heating fan speed, and the heating guide vane angle, and the heating operation duration includes the actual operation duration and the shutdown switching duration; generating a heating operation command based on the heating operation parameters to control the air conditioner to enter the heating operation state; obtaining the real-time ambient temperature, calculating the compressor's heating target frequency and the electronic expansion valve's heating target opening degree based on the real-time ambient temperature and the heating set temperature, and adjusting the air conditioner's heating operation state based on the heating target frequency and the heating target opening degree; and controlling the air conditioner's compressor to stop working when the actual operation duration ends, until the shutdown switching duration is reached.

[0010] Optionally, in a fourth implementation of the first aspect of the present invention, the step of acquiring preset cooling operation parameters and cooling operation duration when the heating operation time ends, and generating a cooling operation command based on the cooling operation parameters to control the air conditioner to switch to cooling operation mode, includes: acquiring preset cooling operation parameters and cooling operation duration when the heating operation time ends, wherein the cooling operation parameters include a cooling set temperature, a cooling fan speed, and a cooling air guide plate angle, and the cooling operation duration includes an actual operation time and a shutdown switching time; generating a cooling operation command based on the cooling operation parameters to control the air conditioner to enter the cooling operation mode; acquiring the real-time ambient temperature, calculating the compressor's cooling target frequency and the electronic expansion valve's cooling target opening degree based on the real-time ambient temperature and the cooling set temperature, and adjusting the air conditioner's cooling operation mode based on the cooling target frequency and the cooling target opening degree; and controlling the air conditioner's compressor to stop working when the actual operation time ends, until the shutdown switching time is reached.

[0011] Optionally, in a fifth implementation of the first aspect of the present invention, the step of acquiring the real-time ambient temperature, calculating the target cooling frequency of the compressor and the target cooling opening of the electronic expansion valve based on the real-time ambient temperature and the cooling set temperature, and adjusting the cooling operation state of the air conditioner based on the target cooling frequency and the target cooling opening includes: acquiring the real-time ambient temperature and a preset base frequency, frequency adjustment step size, base opening, and opening adjustment step size; calculating the target cooling frequency based on the real-time ambient temperature, the cooling set temperature, the base frequency, and the frequency adjustment step size; calculating the target cooling opening based on the real-time ambient temperature, the cooling set temperature, the base opening, and the opening adjustment step size; and adjusting the cooling operation state of the air conditioner based on the target cooling frequency and the target cooling opening, first adjusting the electronic expansion valve to the target cooling opening, then starting the compressor and increasing the frequency to the target cooling frequency with the frequency adjustment step size.

[0012] Optionally, in the sixth implementation of the first aspect of the present invention, after the air conditioner is switched to the cooling operation state, the method further includes: acquiring real-time cooling operation parameters, including compressor suction pressure, compressor frequency, fan speed, ambient temperature, pipe temperature, and operating voltage; acquiring preset normal threshold data corresponding to the real-time cooling operation parameters; comparing the deviation between the real-time cooling operation parameters and the normal threshold data to determine whether there is an operational abnormality; and if there is an operational abnormality, exiting the unblocking and clearing mode.

[0013] A second aspect of the present invention provides a refrigerant pipeline blockage clearing device, comprising: a judgment module, configured to determine whether a blockage clearing mode is triggered when the air conditioner is in a powered-off state; a heating operation module, configured to, if the blockage clearing mode is triggered, acquire preset heating operation parameters and heating operation duration, and generate a heating operation command based on the heating operation parameters to control the air conditioner to enter the heating operation state; a cooling operation module, configured to, when the heating operation duration ends, acquire preset cooling operation parameters and cooling operation duration, and generate a cooling operation command based on the cooling operation parameters to control the air conditioner to switch to the cooling operation state; and an exit module, configured to, after completing a preset number of heating operation cycles and cooling operation cycles, control the air conditioner to exit the blockage clearing mode.

[0014] A third aspect of the present invention provides a refrigerant pipeline blockage cleaning device, the refrigerant pipeline blockage cleaning device comprising: a memory and at least one processor, the memory storing instructions; the at least one processor calling the instructions in the memory to cause the refrigerant pipeline blockage cleaning device to perform each step of the refrigerant pipeline blockage cleaning method described in any of the preceding claims.

[0015] A fourth aspect of the present invention provides a computer-readable storage medium storing instructions that, when executed by a processor, implement the steps of the refrigerant pipeline blockage cleaning method described in any of the preceding claims.

[0016] The technical solution of this invention limits the triggering and execution of the unblocking and cleaning mode to the air conditioner's off state, avoiding conflicts between the cleaning process and normal air conditioner use, and preventing component malfunctions caused by mode switching. Furthermore, it employs a cleaning logic that alternates between heating and cooling, repeatedly flushing the pipes through a preset number of cycles, solving the problem of poor adaptability of fixed cleaning cycles. The method requires no manual intervention from mode triggering and alternating operation to automatic exit, avoiding secondary faults such as pipe seal damage and refrigerant leakage caused by disassembly, effectively restoring refrigerant flow, improving air conditioner cooling and heating efficiency, reducing equipment energy consumption, and extending the overall service life of the air conditioner. In addition, it eliminates the need to modify the original hardware structure of the air conditioner, reducing labor and hardware modification costs for pipe maintenance. Attached Figure Description

[0017] Figure 1 A logic flowchart of the refrigerant pipeline blockage cleaning method provided in an embodiment of the present invention; Figure 2 This is a schematic diagram of the refrigerant pipeline blockage cleaning device provided in an embodiment of the present invention; Figure 3 This is a schematic diagram of the refrigerant pipeline blockage cleaning device provided in an embodiment of the present invention; Detailed Implementation This invention provides a method, apparatus, device, and storage medium for cleaning refrigerant pipeline blockages. In this invention, the terms "first," "second," "third," "fourth," etc. (if applicable) in the specification, claims, and accompanying drawings 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 so that the embodiments described herein can be implemented in a sequence other than that illustrated or described herein. Furthermore, the terms "comprising" or "having" and any variations thereof are intended to cover a non-exclusive inclusion; for example, a process, method, system, product, or device 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 devices.

[0018] This invention discloses a method for cleaning refrigerant pipe blockages. For ease of understanding, the specific process of the embodiments of this invention is described below. Please refer to [link / reference]. Figure 1 One embodiment of the refrigerant pipeline blockage cleaning method of the present invention includes: 101. When the air conditioner is off, determine whether the blockage clearing mode is triggered; In this embodiment, when the air conditioner completes a normal shutdown and all executing components are in a non-operating initial state, a judgment operation to determine if the blockage clearing mode is triggered is performed. If it is determined that the blockage clearing mode has not been triggered, the air conditioner remains in a shutdown state. If it is determined that the blockage clearing mode has been triggered, the subsequent clearing operation process is directly entered. Limiting the judgment step of the blockage clearing mode to the air conditioner shutdown state can avoid conflicts between the clearing process and the normal use process of the air conditioner, prevent the compressor, fan and other components from running erratically during mode switching, and ensure that when the blockage clearing mode is started, all executing components of the air conditioner are in a unified initial state, laying the equipment foundation for the orderly execution of subsequent alternating heating and cooling operations.

[0019] 102. If the blockage clearing mode is triggered, the preset heating operation parameters and heating operation duration are obtained, and a heating operation command is generated based on the heating operation parameters to control the air conditioner to enter the heating operation state. In this embodiment, if the blockage clearing mode is triggered, the pre-calibrated heating operation parameters and heating operation duration for the air conditioner model are retrieved from the main control system's storage module and parsed and integrated to generate a heating operation command that can be directly recognized and executed by each execution component of the air conditioner. After the heating operation command is issued, each execution component of the air conditioner coordinates its actions according to the command, smoothly switching from the shutdown state to the heating operation state. By obtaining the preset standardized heating operation parameters to generate the operation command, it is ensured that the refrigerant flow state during the heating operation stage can meet the cleaning requirements of pipeline flushing.

[0020] 103. When the heating operation time ends, obtain the preset cooling operation parameters and cooling operation time, and generate a cooling operation command based on the cooling operation parameters to control the air conditioner to switch to the cooling operation state; In this embodiment, when the heating operation time reaches the preset calibration value, the mode switching process is triggered; the pre-calibrated cooling operation parameters and cooling operation time are obtained from the storage module and parsed and integrated to generate a cooling operation command and send it to each execution component. Each execution component completes the smooth switching from heating to cooling operation state according to the command. By utilizing the difference in the flow direction and pressure characteristics of the refrigerant in the heating and cooling operation states, the refrigerant pipeline is alternately flushed, so that the deposited impurities and minor blockages in the pipeline are fully moved and dispersed, effectively improving the cleaning effect of pipeline blockage.

[0021] 104. After completing a preset number of heating and cooling operation cycles, control the air conditioner to exit the blockage clearing mode; In this embodiment, a single heating cycle and a single cooling cycle are combined to form a complete pipeline cleaning cycle. The number of times the cleaning cycle is executed is counted in real time. When the count reaches a preset number calibrated according to the air conditioner model and pipeline specifications, a mode exit command is generated and issued. Each execution component of the air conditioner stops all operation actions related to the cleaning mode according to the command and smoothly returns to the normal shutdown standby state. By setting the number of cleaning cycles to a flexibly calibrable preset number, it can adapt to the cleaning needs of different air conditioner models and different degrees of pipeline blockage, ensuring that impurities and minor blockages in the pipeline are fully cleaned, and avoiding repeated pipeline blockage problems due to insufficient cleaning cycles. The number of cleaning cycles can be 3.

[0022] The refrigerant pipeline blockage cleaning method disclosed in this application limits the triggering and execution of the blockage cleaning mode to the air conditioner's off state, avoiding conflicts between the cleaning process and normal air conditioner use, and preventing component malfunctions caused by mode switching. Furthermore, it employs a cleaning logic that alternates between heating and cooling operation, repeatedly flushing the pipeline through a preset number of cycles, solving the problem of poor adaptability of fixed cleaning cycles. The method requires no manual intervention from mode triggering and alternating operation to automatic exit, avoiding secondary faults such as pipeline seal damage and refrigerant leakage caused by disassembly, effectively restoring refrigerant pipeline flow, improving air conditioner cooling and heating efficiency, reducing equipment energy consumption, and extending the overall service life of the air conditioner. In addition, it eliminates the need to modify the original hardware structure of the air conditioner, reducing labor and hardware modification costs for pipeline maintenance.

[0023] Furthermore, in this embodiment of the invention, determining whether to trigger the blockage clearing mode when the air conditioner is in the off state includes: 201. When the air conditioner is in the off state, obtain the operating parameters of the air conditioner before it is turned off, including the refrigerant pipeline pressure difference, compressor operating current and outlet and return air temperature difference; In this embodiment, after the air conditioner completes the shutdown operation, it acquires three core operating parameters continuously collected by corresponding sensors during the normal operation of the air conditioner before the shutdown: refrigerant pipeline pressure difference, compressor operating current, and outlet and return air temperature difference. The extracted operating parameters are valid monitoring data within a preset time period before shutdown, such as valid monitoring data within 10 minutes before shutdown. By acquiring the operating parameters, a judgment basis that highly matches the current pipeline status of the air conditioner is provided for subsequent blockage risk assessment, ensuring the accuracy of the judgment results.

[0024] 202. Obtain a preset set of normal thresholds corresponding to the operating parameters, compare the deviation of the operating parameters from the set of normal thresholds, and determine whether there is a risk of pipeline blockage. In this embodiment, the normal threshold set is a numerical range pre-calibrated based on the air conditioner model, pipeline design specifications, and core component parameters. It includes three independent numerical ranges: normal threshold for refrigerant pipeline pressure difference, normal threshold for compressor operating current, and normal threshold for outlet and return air temperature difference. Each threshold has an upper limit and a lower limit, and can be fine-tuned according to the air conditioner's usage scenario. The acquired actual operating parameters are compared with their corresponding normal thresholds. Based on the preset deviation judgment criteria, it is determined whether there is a risk of pipeline blockage. The situations where there is a risk of pipeline blockage include: any actual operating parameter exceeding the upper or lower limit of the corresponding normal threshold; the values ​​of multiple actual operating parameters deviating from the median value of the corresponding normal threshold by a preset proportion; and a single actual operating parameter continuously deviating from the corresponding normal threshold within a preset time period without any downward trend. By quantitatively comparing actual operating parameters with a preset set of normal thresholds, the risk of blockage can be determined, enabling early detection and handling of blockage risks, and preventing further aggravation of blockage and air conditioning malfunctions.

[0025] 203. If a risk of pipeline blockage is determined, the aforementioned blockage clearing mode is triggered; 204. Or, if the air conditioner is in the off state and a trigger command is received from the user, the blockage clearing mode is triggered. In this embodiment, when the air conditioner is off, if the main control system receives a de-blocking and clearing mode trigger command sent by the user through various means such as the air conditioner remote control, the accompanying mobile application, or the smart home central control system, the system will verify the validity of the unique verification code attached to the trigger command. If the validity verification passes, the de-blocking and clearing mode will be triggered. This provides a way to manually trigger the clearing mode, taking into account both the air conditioner's automatic clearing capability and the user's manual operation needs. Users can choose to start the clearing mode based on the actual usage experience and cooling / heating effect of the air conditioner, solving the problem of potential missed detections in automatic judgment, while meeting the personalized usage needs of different users.

[0026] Furthermore, in this embodiment of the invention, after triggering the blockage clearing mode, the method further includes: 301. Obtain the debug code and preset mode feedback rules corresponding to the blockage clearing mode; In this embodiment, the debug code is a preset fixed numerical code, and the mode feedback rules clarify the specific action standards of the air conditioner display component and the sound-emitting component, providing a clear and unified execution basis for subsequent mode operation feedback.

[0027] 302. Generate a display instruction based on the debug code, and generate a buzzer instruction based on the mode feedback rules; In this embodiment, the display instruction is an execution instruction used to control the air conditioner display screen to light up and continuously display the debug code. The display screen is constantly lit until the blockage clearing mode is exited. The buzzer instruction is an execution instruction used to control the air conditioner buzzer to perform a buzzing action according to a preset number of rings and ringing duration. The buzzing action is triggered at the same time as the display instruction is executed, and only one preset action is executed.

[0028] 303. Adjust the working state of the air conditioner based on the display command and the buzzer command to achieve mode operation feedback; In this embodiment, the generated display command and buzzer command are simultaneously sent to the corresponding execution components. The air conditioner display screen executes the constant-on display action of the debug code according to the display command, and the air conditioner buzzer executes the preset buzzing action according to the buzzer command. The two types of components work together to complete the mode feedback action, and after the feedback action is completed, the air conditioner will continue to maintain the display state until the cleaning mode ends. Through the dual feedback of visual and auditory senses, users can intuitively, quickly and accurately confirm that the blockage cleaning mode has been successfully started, effectively avoiding users' misoperation such as turning the unit on or off or adjusting the temperature due to not recognizing the mode's operating status, and ensuring that the cleaning process can be executed smoothly.

[0029] Furthermore, in this embodiment of the invention, if the blockage clearing mode is triggered, obtaining preset heating operation parameters and heating operation duration, and generating a heating operation command based on the heating operation parameters to control the air conditioner to enter the heating operation state includes: 401. If the blockage clearing mode is triggered, the preset heating operation parameters and heating operation duration are obtained. The heating operation parameters include the heating set temperature, heating fan speed and heating air guide plate angle. The heating operation duration includes the actual operation duration and the shutdown switching duration. In this embodiment, after triggering the blockage clearing mode, the heating operation parameters and heating operation duration are obtained from the storage module. The heating operation parameters are fixed values ​​pre-calibrated based on the air conditioner model, including: a heating set temperature of 31°C, a heating fan speed equal to the maximum rated speed of the indoor and outdoor fans of the air conditioner, and a heating air guide plate angle centered at 45°. The heating operation duration is divided into the actual heating operation time of each component of the air conditioner and the refrigerant shutdown protection time before mode switching, including: an actual operation time of 5 minutes and a shutdown switching time of 3 minutes, i.e., a heating operation time of 8 minutes. By setting the shutdown switching time, sufficient time is provided for refrigerant pressure balance during the subsequent mode switching process, thereby achieving effective protection of the refrigerant pipeline and compressor.

[0030] 402. Generate a heating operation command based on the heating operation parameters to control the air conditioner to enter the heating operation state; 403. Obtain the real-time ambient temperature, calculate the target heating frequency of the compressor and the target heating opening of the electronic expansion valve based on the real-time ambient temperature and the heating set temperature, and adjust the heating operation status of the air conditioner based on the target heating frequency and the target heating opening. In this embodiment, the heating target frequency is calculated as follows: heating target frequency = heating base frequency + (heating set temperature - real-time ambient temperature) × heating frequency adjustment step size. The heating base frequency is preset to 50Hz, and the heating frequency adjustment step size is preset to 5Hz / ℃. If the calculated heating target frequency is lower than 30Hz, it will be executed at 30Hz. If it is higher than the rated maximum frequency of the air conditioner compressor, it will be executed at the rated maximum frequency. The calculation method for the target opening of the electronic expansion valve is as follows: Target opening = Base opening + (Set heating temperature - Real-time ambient temperature) × Heating opening adjustment step. The base opening is preset to 200 steps, and the heating opening adjustment step is preset to 10 steps / ℃. If the calculated target opening is less than 100 steps, it will be executed according to 100 steps. If it is higher than the rated maximum opening of the electronic expansion valve, it will be executed according to the rated maximum opening. Based on the calculation results, adjustment instructions are generated and sent to the corresponding execution components. The compressor and electronic expansion valve are adjusted to the target operating state according to the instructions. The compressor frequency and electronic expansion valve opening are determined by dynamic calculation based on the real-time ambient temperature and the heating set temperature. This ensures that the parameters of the core components for heating operation are highly adapted to the real-time ambient temperature, avoiding energy waste or insufficient refrigerant flow pressure caused by fixed parameters. It also ensures that the refrigerant flow pressure and flow rate during the heating stage are always adapted to the needs of pipeline cleaning, thereby improving the heating operation effect and cleaning efficiency.

[0031] 404. When the actual running time ends, the compressor of the air conditioner is controlled to stop working until the shutdown switching time is reached; In this embodiment, when the preset actual running time is reached, a shutdown command is generated and sent to the compressor, which immediately stops working. Other components such as the internal fan and external fan maintain their original operating state. The main control system continues to time until the preset shutdown switching time is reached, and then triggers the subsequent cooling mode switching process. This provides sufficient time for the refrigerant pressure in the refrigerant pipeline to naturally balance, achieving professional shutdown protection for the refrigerant. It avoids sudden changes in pipeline pressure caused by directly switching from heating to cooling, prevents irreversible damage to the compressor and refrigerant pipeline due to instantaneous pressure shock, and effectively extends the service life of the compressor and pipeline.

[0032] Further, in this embodiment of the invention, the step of acquiring preset cooling operation parameters and cooling operation duration when the heating operation time ends, and generating a cooling operation command based on the cooling operation parameters to control the air conditioner to switch to cooling operation mode, includes: 501. When the heating operation time ends, obtain the preset cooling operation parameters and cooling operation time. The cooling operation parameters include the cooling set temperature, cooling fan speed and cooling air guide plate angle. The cooling operation time includes the actual operation time and the shutdown switching time. In this embodiment, after the total heating operation time reaches a preset value, the cooling operation parameters and cooling operation time are obtained. The cooling operation parameters are fixed values ​​pre-calibrated based on the air conditioner model, including: cooling set temperature of 16°C, cooling fan speed of the indoor and outdoor fans of the air conditioner at the highest rated speed, and cooling air guide plate angle of 0° horizontal. The cooling operation time is also divided into the actual cooling operation time and the refrigerant shutdown protection time before mode switching, including: actual operation time of 5 minutes, shutdown switching time of 3 minutes, and total cooling operation time of 8 minutes.

[0033] 502. Generate a cooling operation command based on the cooling operation parameters to control the air conditioner to enter the cooling operation state; 503. Obtain the real-time ambient temperature, calculate the target cooling frequency of the compressor and the target cooling opening of the electronic expansion valve based on the real-time ambient temperature and the cooling set temperature, and adjust the cooling operation status of the air conditioner based on the target cooling frequency and the target cooling opening. In this embodiment, the operating parameters of the core execution components are determined by dynamic calculation of real-time ambient temperature and refrigeration set temperature, so that the refrigeration operation is highly adapted to the real-time ambient temperature. This enables precise control of compressor frequency and electronic expansion valve opening, ensuring that the refrigerant flow pressure and flow rate during the refrigeration stage can meet the cleaning requirements of pipeline back flushing, while avoiding energy waste caused by fixed parameters, thus improving the energy efficiency and cleaning effect of refrigeration operation.

[0034] 504. When the actual running time ends, the compressor of the air conditioner is controlled to stop working until the shutdown switching time is reached; In this embodiment, when the preset actual running time is reached, a shutdown command is generated and sent to the compressor, and the compressor immediately stops working. Other components such as the internal fan and external fan maintain their original operating state. The main control system continues to time until the preset shutdown switching time is reached, and then triggers the next heating mode switching or cleaning mode exit process based on the cycle count result. After the actual cooling operation period ends, the compressor is stopped in time. The pressure of the refrigerant pipeline is naturally balanced during the shutdown switching time, which completes the professional shutdown protection of the refrigerant. This avoids sudden pressure changes in the pipeline caused by switching directly from cooling to heating, and prevents core components from malfunctioning due to instantaneous pressure surges. At the same time, the refrigerant pipeline enters the next operating cycle after pressure balance, ensuring the orderly and stable execution of the cleaning cycle and improving the operational stability of the entire cleaning mode.

[0035] Further, in this embodiment of the invention, the step of acquiring the real-time ambient temperature, calculating the target cooling frequency of the compressor and the target cooling opening degree of the electronic expansion valve based on the real-time ambient temperature and the cooling set temperature, and adjusting the cooling operation state of the air conditioner based on the target cooling frequency and the target cooling opening degree, includes: 601. Obtain the real-time ambient temperature and preset base frequency, frequency adjustment step size, base opening degree, and opening degree adjustment step size; In this embodiment, the current ambient temperature is obtained in real time from the ambient temperature sensor of the air conditioner. At the same time, fixed basic parameters pre-calibrated based on the air conditioner model are obtained from the system configuration module, including the compressor cooling basic frequency, compressor frequency adjustment step size, electronic expansion valve cooling basic opening degree, and electronic expansion valve opening degree adjustment step size. These four types of parameters are the basic calculation basis for the cooling target frequency and cooling target opening degree, and can be slightly adjusted according to the usage scenario of the air conditioner.

[0036] 602. Calculate the target cooling frequency based on the real-time ambient temperature, cooling set temperature, base frequency, and frequency adjustment step size; 603. Calculate the target cooling opening based on the real-time ambient temperature, cooling set temperature, basic opening degree, and opening degree adjustment step size; In this embodiment, the cooling target frequency is calculated as follows: Cooling target frequency = Cooling base frequency + (Cooling set temperature - Real-time ambient temperature) × Cooling frequency adjustment step size, wherein the cooling base frequency is preset to 50Hz, and the cooling frequency adjustment step size is preset to 5Hz / ℃. If the calculated cooling target frequency is lower than the minimum operating frequency, it will be executed according to the minimum operating frequency; if it is higher than the rated maximum frequency of the air conditioner compressor, it will be executed according to the rated maximum frequency. The calculation method for the target opening degree of the electronic expansion valve is as follows: Target opening degree of cooling = Base opening degree of cooling + (Set cooling temperature - Real-time ambient temperature) × Adjustment step of cooling opening degree. The base opening degree of cooling is preset to 200 steps, and the adjustment step of cooling opening degree is preset to 10 steps / ℃. If the calculated target opening degree of cooling is lower than the minimum adjustment opening degree of the electronic expansion valve, the minimum adjustment opening degree shall be used. If it is higher than the rated maximum opening degree of the electronic expansion valve, the rated maximum opening degree shall be used. Based on the calculation results, adjustment instructions are generated and sent to the corresponding execution components. The compressor and electronic expansion valve are adjusted to the target operating state according to the instructions. The compressor frequency and electronic expansion valve opening are determined by dynamic calculation based on the real-time ambient temperature and the refrigeration set temperature. This ensures that the parameters of the core components of refrigeration operation are highly adapted to the real-time ambient temperature, avoiding energy waste or insufficient refrigerant flow pressure caused by fixed parameters. It also ensures that the refrigerant flow pressure and flow rate during the refrigeration stage are always adapted to the needs of pipeline cleaning.

[0037] 604. Adjust the cooling operation status of the air conditioner based on the target cooling frequency and target cooling opening degree. First, adjust the electronic expansion valve to the target cooling opening degree, then start the compressor and increase the frequency to the target cooling frequency with the frequency adjustment step size. In this embodiment, an opening adjustment command is first generated and sent to the electronic expansion valve. The electronic expansion valve adjusts to the target opening degree according to the command and maintains stable operation after reaching the target opening degree. Then, a compressor start command is generated. After the compressor starts, the operating frequency is gradually increased by adjusting the step size according to the preset frequency until the target cooling frequency is reached and stable operation is maintained. By adopting the adjustment sequence of adjusting the electronic expansion valve first and then starting the compressor, it is ensured that the refrigerant flow in the pipeline is in a stable state when the compressor starts. This avoids problems such as excessive operating load and compressor overload caused by starting the compressor when the refrigerant flow is unstable, and ensures the operational safety of core components such as the compressor and electronic expansion valve.

[0038] Furthermore, in this embodiment of the invention, after controlling the air conditioner to switch to cooling operation mode, the method further includes: 701. Obtain real-time refrigeration operation parameters, including compressor suction pressure, compressor frequency, fan speed, ambient temperature, pipeline temperature and operating voltage; In this embodiment, after the air conditioner enters the cooling operation state, the corresponding pressure sensor, speed sensor, temperature sensor, and voltage sensor enter the continuous acquisition state, collecting six types of real-time operating parameters in real time: compressor suction pressure, compressor frequency, fan speed, ambient temperature, pipeline temperature, and operating voltage. After the air conditioner enters the heating operation state, it adopts the same sensor acquisition method as the cooling operation to synchronously acquire the six types of real-time heating operation parameters, realizing full parameter monitoring in both heating and cooling stages. This comprehensively reflects the actual operating status of each core component of the air conditioner and the refrigerant pipeline, providing comprehensive, accurate, and real-time data for subsequent abnormal judgment, ensuring that abnormal states can be detected in a timely manner.

[0039] 702. Obtain preset normal threshold data corresponding to the real-time cooling operation parameters, compare the deviation between the real-time cooling operation parameters and the normal threshold data, and determine whether there is an operational abnormality; In this embodiment, the normal threshold data is based on the air conditioning operation safety standard and the pre-calibrated value range of core component parameters. Each of the six types of parameters is set with independent normal threshold data, and each threshold data includes an upper limit value, a lower limit value, and a continuous deviation duration threshold. An operational anomaly is identified when the value of any real-time operating parameter exceeds the upper or lower limit of the corresponding normal threshold data; or when the value of any real-time operating parameter continuously deviates from the median value of the corresponding normal threshold data within a preset continuous deviation period without any downward trend; or when the values ​​of two or more real-time operating parameters simultaneously deviate from the median value of the corresponding normal threshold data to a preset proportion; or when the value of a real-time operating parameter experiences drastic fluctuations within a short period of time, with the fluctuation range exceeding a preset range. For example: During the heating phase, blockage in the pipes leads to poor refrigerant circulation. When the compressor discharge pressure exceeds 3.0 MPa, the compressor high-pressure protection is triggered to prevent overload damage to the compressor. During the refrigeration stage, pipe blockage leads to insufficient refrigerant flow, triggering the compressor's low-pressure protection when the compressor's suction pressure is <0.1MPa; The compressor overcurrent protection is triggered when the compressor frequency is too high or the pipeline resistance is too high, and the operating current is greater than 1.2 times the rated current. The fan fault protection is triggered when the internal / external fan speed is less than 80% of the rated speed, or when the fan stalls for more than 5 seconds. The temperature sensor malfunction is triggered when the ambient / pipeline temperature sensor readings exceed the range of -20℃ to 80℃, or when the sensor is open-circuited / short-circuited. During the heating phase, the frosting protection is triggered when the thickness of the frost on the outdoor unit heat exchanger exceeds 5mm or the frost area exceeds 80%. Power supply voltage fluctuation > ±10%, or sudden power outage triggers power supply abnormality protection; In heating mode, the normal threshold data calibration standard and abnormal judgment logic are completely consistent with those in cooling mode, realizing standardized abnormal judgment of the entire air conditioner cleaning process and avoiding subjective bias of manual judgment. At the same time, the specific judgment logic for multiple dimensions and multiple scenarios is clarified, which can comprehensively identify various abnormal states of the air conditioner during operation, realizing all-round safety monitoring of both cooling and heating stages, and ensuring that any minor abnormality can be captured in time.

[0040] 703. If there is a malfunction, exit the blockage clearing mode; In this embodiment, when any abnormal operation is detected in either the cooling or heating mode, an emergency exit command for clearing blockages is generated. At this time, the compressor immediately stops, the electronic expansion valve resets to its initial opening, the fan gradually stops running, and the air conditioner quickly returns to its normal shutdown state. This achieves intelligent safety protection for the air conditioner, avoids damage to core components or refrigerant pipeline failures caused by continuous operation in abnormal states, prevents minor faults from escalating into serious equipment damage, and effectively reduces equipment maintenance costs.

[0041] The above describes the refrigerant pipeline blockage removal method in the embodiments of the present invention. The following describes the refrigerant pipeline blockage removal device in the embodiments of the present invention. Please refer to [link / reference]. Figure 2 One embodiment of the refrigerant pipeline blockage cleaning device in this invention includes: The judgment module 801 is used to determine whether the blockage clearing mode is triggered when the air conditioner is in the off state. The heating operation module 802 is used to obtain preset heating operation parameters and heating operation duration if the blockage clearing mode is triggered, and generate a heating operation command based on the heating operation parameters to control the air conditioner to enter the heating operation state. The cooling operation module 803 is used to acquire preset cooling operation parameters and cooling operation duration when the heating operation time ends, and generate a cooling operation command based on the cooling operation parameters to control the air conditioner to switch to the cooling operation state. The exit module 804 is used to control the air conditioner to exit the blockage clearing mode after completing a preset number of heating and cooling operation cycles.

[0042] Based on the same ideas as the methods in the above embodiments, the apparatus provided in this application can implement the methods in the above embodiments.

[0043] above Figure 2The refrigerant pipeline blockage cleaning device in this embodiment of the invention is described in detail from the perspective of modular functional entities. The refrigerant pipeline blockage cleaning equipment in this embodiment of the invention is described in detail from the perspective of hardware processing.

[0044] Figure 3 This is a schematic diagram of a refrigerant pipe blockage cleaning device 900 provided in an embodiment of the present invention. The refrigerant pipe blockage cleaning device 900 can vary significantly due to different configurations or performance. It may include one or more central processing units (CPUs) 910 and a memory 920, and one or more storage media 930 (e.g., one or more mass storage devices) storing application programs 933 or data 932. The memory 920 and storage media 930 can be temporary or persistent storage. The program stored in the storage media 930 may include one or more modules (not shown in the diagram), each module including a series of instruction operations on the refrigerant pipe blockage cleaning device 900. Furthermore, the processor 910 may be configured to communicate with the storage media 930 and execute the series of instruction operations in the storage media 930 on the refrigerant pipe blockage cleaning device 900 to implement the steps of the refrigerant pipe blockage cleaning method provided in the above-described method embodiments.

[0045] The refrigerant line blockage cleaning device 900 may also include one or more power supplies 940, one or more wired or wireless network interfaces 950, one or more input / output interfaces 960, and / or one or more operating systems 931, such as Windows Server, Mac OS X, Unix, Linux, FreeBSD, etc. Those skilled in the art will understand that... Figure 3 The structure of the refrigerant line blockage cleaning device shown does not constitute a limitation on the refrigerant line blockage cleaning device. It may include more or fewer components than shown, or combine certain components, or have different component arrangements.

[0046] The present invention also provides a computer-readable storage medium, which can be a non-volatile computer-readable storage medium or a volatile computer-readable storage medium, wherein the computer-readable storage medium stores instructions that, when executed on a computer, cause the computer to perform the steps of a refrigerant pipeline blockage cleaning method.

[0047] Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the specific working process of the system, device, or unit described above can be referred to the corresponding process in the foregoing method embodiments, and will not be repeated here.

[0048] If the integrated unit is implemented as a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention, in essence, or the part that contributes to the prior art, or all or part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of the present invention. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0049] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A method for cleaning blockages in refrigerant pipelines, characterized in that, include: When the air conditioner is off, determine whether to trigger the blockage clearing mode; If the blockage clearing mode is triggered, the preset heating operation parameters and heating operation duration are obtained, and a heating operation command is generated based on the heating operation parameters to control the air conditioner to enter the heating operation state. When the heating operation time ends, the preset cooling operation parameters and cooling operation time are obtained, and a cooling operation command is generated based on the cooling operation parameters to control the air conditioner to switch to the cooling operation state. After completing a preset number of heating and cooling cycles, the air conditioner is controlled to exit the unblocking and clearing mode.

2. The method for cleaning refrigerant pipe blockages according to claim 1, characterized in that, The step of determining whether to trigger the blockage clearing mode when the air conditioner is in the off state includes: When the air conditioner is turned off, the operating parameters of the air conditioner before it was turned off are obtained. The operating parameters include refrigerant pipeline pressure difference, compressor operating current and outlet and return air temperature difference. Obtain a preset set of normal thresholds corresponding to the operating parameters, compare the deviation of the operating parameters from the normal thresholds, and determine whether there is a risk of pipeline blockage. If a risk of pipeline blockage is determined, the blockage clearing mode is triggered. Alternatively, if the air conditioner is in the off state and a trigger command is received from the user, the blockage clearing mode will be triggered.

3. The method for cleaning refrigerant pipe blockages according to claim 2, characterized in that, After triggering the blockage clearing mode, the following is also included: Obtain the debug code and preset mode feedback rules corresponding to the blockage clearing mode; A display command is generated based on the debug code, and a beep command is generated based on the mode feedback rules; The air conditioner's operating status is adjusted based on the display command and the buzzer command to achieve mode operation feedback.

4. The method for cleaning refrigerant pipe blockages according to claim 1, characterized in that, If the blockage clearing mode is triggered, preset heating operation parameters and heating operation duration are obtained, and a heating operation command is generated based on the heating operation parameters to control the air conditioner to enter the heating operation state, including: If the blockage clearing mode is triggered, the preset heating operation parameters and heating operation duration are obtained. The heating operation parameters include the heating set temperature, heating fan speed and heating air guide plate angle. The heating operation duration includes the actual operation duration and the shutdown switching duration. A heating operation command is generated based on the heating operation parameters to control the air conditioner to enter the heating operation state; The system acquires the real-time ambient temperature, calculates the target heating frequency of the compressor and the target heating opening of the electronic expansion valve based on the real-time ambient temperature and the heating set temperature, and adjusts the heating operation status of the air conditioner based on the target heating frequency and the target heating opening. When the actual running time ends, the compressor of the air conditioner is controlled to stop working until the shutdown switching time is reached.

5. The method for cleaning refrigerant pipe blockages according to claim 1, characterized in that, When the heating operation time ends, the preset cooling operation parameters and cooling operation time are obtained, and a cooling operation command is generated based on the cooling operation parameters to control the air conditioner to switch to cooling operation mode, including: When the heating operation time ends, the preset cooling operation parameters and cooling operation time are obtained. The cooling operation parameters include the cooling set temperature, cooling fan speed and cooling air guide plate angle. The cooling operation time includes the actual operation time and the shutdown switching time. Based on the aforementioned cooling operation parameters, a cooling operation command is generated to control the air conditioner to enter the cooling operation state; The system acquires the real-time ambient temperature, calculates the target cooling frequency of the compressor and the target cooling opening of the electronic expansion valve based on the real-time ambient temperature and the cooling set temperature, and adjusts the cooling operation status of the air conditioner based on the target cooling frequency and the target cooling opening. When the actual running time ends, the compressor of the air conditioner is controlled to stop working until the shutdown switching time is reached.

6. The method for cleaning refrigerant pipe blockages according to claim 5, characterized in that, The process of acquiring real-time ambient temperature, calculating the target cooling frequency of the compressor and the target cooling opening of the electronic expansion valve based on the real-time ambient temperature and the cooling set temperature, and adjusting the cooling operation state of the air conditioner based on the target cooling frequency and the target cooling opening includes: Acquire real-time ambient temperature and preset base frequency, frequency adjustment step size, base opening degree, and opening adjustment step size; The target cooling frequency is calculated based on the real-time ambient temperature, cooling set temperature, base frequency, and frequency adjustment step size. The target cooling opening is calculated based on the real-time ambient temperature, cooling set temperature, basic opening degree, and opening degree adjustment step size. Based on the target cooling frequency and target cooling opening degree, adjust the air conditioner's cooling operation status. First, adjust the electronic expansion valve to the target cooling opening degree, then start the compressor and increase the frequency to the target cooling frequency using frequency adjustment steps.

7. The method for cleaning refrigerant pipe blockages according to claim 1, characterized in that, After the air conditioner is switched to cooling operation mode, the following is also included: The real-time refrigeration operation parameters are obtained, including compressor suction pressure, compressor frequency, fan speed, ambient temperature, pipeline temperature, and operating voltage. Obtain preset normal threshold data corresponding to the real-time cooling operation parameters, compare the deviation between the real-time cooling operation parameters and the normal threshold data, and determine whether there is an operational abnormality; If an operational anomaly is detected, the blockage clearing mode will be exited.

8. A refrigerant pipeline blockage cleaning device, characterized in that, include: The judgment module is used to determine whether the blockage clearing mode is triggered when the air conditioner is in the off state; The heating operation module is used to obtain preset heating operation parameters and heating operation duration if the blockage clearing mode is triggered, and generate a heating operation command based on the heating operation parameters to control the air conditioner to enter the heating operation state. The cooling operation module is used to obtain preset cooling operation parameters and cooling operation duration when the heating operation time ends, and generate a cooling operation command based on the cooling operation parameters to control the air conditioner to switch to the cooling operation state. The exit module is used to control the air conditioner to exit the blockage clearing mode after completing a preset number of heating and cooling operation cycles.

9. A refrigerant pipeline blockage cleaning device, characterized in that, The refrigerant pipeline blockage cleaning device includes: a memory and at least one processor, wherein the memory stores instructions; At least one of the processors invokes the instructions in the memory to cause the refrigerant line blockage removal device to perform the steps of the refrigerant line blockage removal method as described in any one of claims 1-7.

10. A computer-readable storage medium storing instructions thereon, characterized in that, When the instructions are executed by the processor, they implement the various steps of the refrigerant pipeline blockage cleaning method as described in any one of claims 1-7.

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