Defrosting control method and device, medium and air conditioner
By acquiring the target evaluation parameters of the air conditioner and dynamically adjusting the defrost exit conditions, the problem of delayed timing of air conditioner defrost technology exit was solved, and the efficient operation of the air conditioning system was achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- GUANGDONG TCL INTELLIGENT HEATING & VENTILATING EQUIP CO LTD
- Filing Date
- 2026-03-27
- Publication Date
- 2026-05-12
AI Technical Summary
The delayed phase-out of existing air conditioning defrosting technology results in the system being in an ineffective defrosting state during certain periods, reducing operating efficiency.
By acquiring target evaluation parameters, such as coil temperature, temperature rise rate, and compressor suction side pressure, the defrost exit conditions are dynamically adjusted to exit the defrost mode in a timely manner and avoid ineffective defrosting.
It enables dynamic adjustment of the exit timing based on the actual defrosting load, ensuring a rapid response and immediate exit from the defrosting mode after the frost melts, avoiding prolonged ineffective defrosting and significantly improving the operating efficiency of the air conditioning system.
Smart Images
Figure CN122015233A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of air conditioning technology, and in particular to a defrosting control method, device, medium, and air conditioner. Background Technology
[0002] The mainstream defrosting technology for air conditioners currently uses the reverse circulation defrosting method, which involves switching to cooling mode via a four-way valve, stopping the outdoor fan, and guiding the high-temperature refrigerant directly through the outdoor heat exchanger to melt the frost layer.
[0003] However, existing defrost exit control logic mostly relies on a fixed running time or a preset pipe temperature threshold. Due to the rigid setting of the fixed duration and the thermal hysteresis characteristics of the temperature sensor, this mechanism often leads to a delay in the exit timing, causing the system to be in an ineffective defrost state for some periods of time, thus reducing operating efficiency. Summary of the Invention
[0004] Therefore, it is necessary to provide defrosting control methods, devices, media, and air conditioners to solve the problem that the timing of the withdrawal of existing defrosting technology is delayed, causing the system to be in an ineffective defrosting state for some periods of time, which reduces operating efficiency.
[0005] In a first aspect, embodiments of this application provide a defrosting control method, the method comprising: After entering defrost mode, target evaluation parameters are obtained; wherein, the target evaluation parameters are used to evaluate the defrost load; When the target assessment parameter indicates that the current state is at risk of overload, the defrost exit condition is switched from the initial first condition to the second condition; wherein the second condition is more likely to be triggered than the first condition. When the second condition is met, exit the defrosting mode.
[0006] In some embodiments of this application, the target evaluation parameters include coil temperature, coil temperature rise rate, and compressor suction side pressure. Before switching the defrost exit condition from the initial first condition to the second condition, the method further includes: When the coil temperature is within the phase change temperature monitoring range and the coil temperature meets the third condition, and / or the suction side pressure meets the fourth condition, it is determined that the current state is under load risk; wherein, the third condition is that the temperature rise rate is greater than or equal to the rise rate value and the duration is greater than the first duration threshold, and the fourth condition is that the suction side pressure is greater than or equal to the first pressure threshold.
[0007] In some embodiments of this application, the first condition is that the coil temperature is greater than or equal to a first temperature threshold, and the second condition is that the coil temperature is greater than or equal to a second temperature threshold; wherein, the second temperature threshold is less than the first temperature threshold.
[0008] In some embodiments of this application, the first condition is that the cumulative defrosting time is greater than or equal to a first time threshold, and the second condition is that the cumulative defrosting time is greater than or equal to a second time threshold; wherein, the second time threshold is less than the first time threshold.
[0009] In some embodiments of this application, exiting the defrost mode includes: Control the operation of the external fan until the pressure relief condition is met, then exit the defrosting mode.
[0010] In some embodiments of this application, the pressure relief completion conditions include the operating length of the external fan being greater than or equal to a second duration threshold, and / or the coil pressure being less than or equal to a second pressure threshold, and / or the coil pressure drop rate being less than or equal to a rate threshold.
[0011] In some embodiments of this application, after exiting the defrost mode when the second condition is met, the method further includes: Switch the defrost exit condition from the second condition to the first condition.
[0012] Secondly, embodiments of this application also provide a defrosting control device, the defrosting control device comprising: The parameter acquisition module is used to acquire target evaluation parameters after entering the defrost mode; wherein, the target evaluation parameters are used to evaluate the defrost load; The condition switching module is used to switch the defrost exit condition from an initial first condition to a second condition when the target evaluation parameter indicates that the current state is under load risk; wherein the second condition is more likely to be triggered than the first condition. The mode proposal module is used to exit the defrost mode when the second condition is met.
[0013] Thirdly, this application also provides an air conditioner, which includes a memory, a processor, and a computer program stored in the memory and executable on the processor. When the computer program is executed by the processor, it implements the steps in the defrosting control method described above.
[0014] Fourthly, embodiments of this application also provide a computer-readable storage medium storing a computer program, which, when executed by a processor, implements the steps in the defrosting control method described above.
[0015] Fifthly, embodiments of this application also provide a computer program product or computer program, which includes computer instructions stored in a computer-readable storage medium. A processor of a computer device reads the computer instructions from the computer-readable storage medium and executes the computer instructions, causing the computer device to perform the methods provided in the various optional implementations described in embodiments of this application.
[0016] This invention provides a defrosting control method, apparatus, medium, and air conditioner. By acquiring target evaluation parameters for assessing defrosting load, when the parameters indicate a load risk state, the defrosting exit condition is switched from an initial first condition to a more easily triggered second condition. The defrosting mode is then promptly exited when the second condition is met. This solution can dynamically adjust the exit timing according to the actual defrosting load, ensuring that the system can respond quickly and exit the defrosting mode immediately after the frost layer has actually melted. This effectively improves the problem of delayed defrosting exit timing caused by fixed duration or preset pipe temperature threshold control in existing technologies, avoiding the system being in an ineffective defrosting state for a long time and significantly improving the operating efficiency of the air conditioning system. Attached Figure Description
[0017] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0018] in: Figure 1 This is a flowchart illustrating the defrosting control method. Figure 2 This is a schematic diagram of the defrosting control device; Figure 3 This is a structural block diagram of an air conditioner. Detailed Implementation
[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.
[0020] The terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish different objects, not to describe a specific order. 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 includes a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units not listed, or may optionally include other steps or units inherent to these processes, methods, products, or apparatuses.
[0021] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.
[0022] This invention provides a defrosting control method, apparatus, medium, and air conditioner. In some embodiments of this application, the provided defrosting control method can be applied to an air conditioner. Specifically, the air conditioner can be applied to different scenarios, including but not limited to industrial air conditioners or household air conditioners. In some embodiments of this application, the air conditioner can be a single unit, such as a cabinet air conditioner or a wall-mounted air conditioner; in some embodiments of this application, the air conditioner can also be a central air conditioning system composed of multiple air conditioner units, such as a multi-split air conditioner, an air-cooled heat pump system, or an air conditioning system with heat recovery function.
[0023] Please see Figure 1 , Figure 1 This is a flowchart illustrating the defrosting control method provided in an embodiment of this application. Although the logical sequence is shown in the flowchart, in some cases, the steps shown or described may be performed in a different order than that shown in the figures. Specifically, the specific flow of the defrosting control method is as follows: S101, after entering defrost mode, acquires target evaluation parameters.
[0024] The target evaluation parameters are used to assess the defrost load, which refers to the total amount of heat required to completely melt the current frost layer or the remaining time cost required to complete the defrosting task. Target evaluation parameters include, but are not limited to, coil temperature, coil temperature rise rate, compressor suction side pressure, discharge side pressure, power consumption, and current.
[0025] Optionally, the entry conditions for defrosting follow the traditional control logic. Based on established conditions such as the running time, coil temperature, or the temperature difference between the coil and the environment, the air conditioner can be triggered to enter the defrost mode. The operation process of the defrost mode also follows the traditional operation method: control the four-way valve to complete the commutation action, and at the same time shut down the outdoor fan, keep the compressor running continuously, and realize the defrosting operation by flowing high-temperature refrigerant through the outdoor heat exchanger.
[0026] Optionally, after entering the defrost mode, the acquisition of various target evaluation parameters is realized by relying on corresponding sensors. Among them, the coil temperature and the temperature rise rate of the coil are collected and monitored in real time by the coil temperature sensor; the suction side pressure of the compressor can be directly collected by the suction side pressure sensor, or the temperature data collected by the suction side temperature sensor can be used to calculate the relevant values of the suction side pressure. The same goes for the discharge side pressure and will not be elaborated here. The operating power and running current of the compressor can be collected in real time by the power sensor and current sensor supporting the air conditioner. The sensor transmits the detected electrical signal to the main control board to directly obtain the values; if there is no dedicated sensor, the main control board can also collect basic electrical parameters such as the voltage and impedance of the compressor power supply circuit, and then calculate them through relevant power and current calculation formulas.
[0027] S102, when the target evaluation parameter indicates that the current is in a load risk state, switch the defrost exit condition from the initial first condition to the second condition.
[0028] Among them, the load risk state refers to the state where the frost layer has melted completely or the thickness of the frost layer is less than the thickness threshold. The second condition is more likely to be triggered compared to the first condition.
[0029] Optionally, after the air conditioner enters the defrost mode, continuously collect the real-time operating power and real-time running current of the compressor, set corresponding power thresholds and current thresholds. If the real-time operating power of the compressor is continuously greater than or equal to the preset power threshold, and the real-time running current is continuously greater than or equal to the preset current threshold, and the duration of this state exceeds the third duration threshold, it is determined that the current is in the load risk state of defrosting.
[0030] This is because when the frost layer has basically melted in the defrost mode and the system enters the ineffective defrosting stage, the heat transfer resistance of the outdoor heat exchanger will be greatly reduced, and the refrigerant circulation rate will increase, which will directly lead to a sudden increase in the operating load of the compressor, manifested as a synchronous and continuous increase in the operating power and running current. By monitoring the abnormal changes of these two parameters, the load risk caused by ineffective defrosting can be accurately identified.
[0031] In some embodiments of the present application, the target evaluation parameter includes the coil temperature, the temperature rise rate of the coil, and the suction side pressure of the compressor. Before switching the defrost exit condition from the initial first condition to the second condition, the following steps are also executed: When the coil temperature is within the phase change temperature monitoring range and the coil temperature meets the third condition, and / or the suction side pressure meets the fourth condition, it is determined that the current state is under load risk; wherein, the third condition is that the temperature rise rate is greater than or equal to the rise rate value and the duration is greater than the first duration threshold, and the fourth condition is that the suction side pressure is greater than or equal to the first pressure threshold.
[0032] The phase change temperature monitoring range refers to the preset temperature range required for ice and frost to completely transform from a solid state to liquid water.
[0033] For example, regarding the third condition mentioned above, the controller continuously acquires the coil temperature value using a high-frequency acquisition method. The acquisition frequency can be set to once per second. At the same time, it calculates the temperature rise rate of the coil per unit time in real time based on the continuously acquired temperature data. In practical applications, the following exemplary parameter settings can be used: the phase change temperature monitoring range is set to -2℃~2℃, the matching temperature rise rate threshold is ≥0.8℃ / s, and the first duration threshold is 3 seconds. That is, when the coil temperature is in the range of -2℃~2℃, if the temperature rise rate is maintained at ≥0.8℃ / s for 3 seconds or more, the load risk condition determination requirements are met.
[0034] Understandably, when the surface of the outdoor heat exchanger is heavily frosted, the frost layer during the defrosting stage will gradually melt into water. This process is in the phase change stage of the ice-water mixture. The phase change process will continuously absorb a large amount of heat, which will offset the heat transferred by the high-temperature refrigerant. Therefore, the coil temperature remains relatively stable during this stage and will not show a significant upward trend. However, when the surface of the heat exchanger is frost-free or lightly frosted, there is no large amount of frost layer that needs to absorb heat for phase change. The heat transferred by the high-temperature refrigerant will all be used to heat the copper tubes and fins of the heat exchanger. There is no additional heat consumption process, which will directly lead to a rapid and significant rise in the coil temperature. By monitoring this temperature change characteristic, it is possible to accurately identify whether the system has entered a load risk stage of ineffective defrosting.
[0035] For example, regarding the third condition mentioned above, a suitable first pressure threshold is set for the compressor suction side pressure by combining the air conditioner's model specifications, refrigerant type, and system operating parameters. For instance, considering the conventional system configuration of a household air source heat pump air conditioner and the operating characteristics of mainstream refrigerants such as R32 and R410A, the first pressure threshold for the compressor suction side is set to 0.9 MPa. During the defrosting process of the heat pump air conditioner, the controller receives real-time monitoring data of the suction side pressure at a high frequency (e.g., once per second). Once the detected value reaches or exceeds 0.9 MPa, the load risk status judgment result is immediately triggered, and the defrosting exit condition switching process is started simultaneously.
[0036] Understandably, taking heat pump air conditioners as an example, if the frost layer on the outdoor heat exchanger surface has largely melted, the system enters an ineffective defrosting stage. At this time, the water temperature on the heat pump's water side will fluctuate significantly with the heat exchange process. These temperature changes directly affect the refrigerant evaporation efficiency in the outdoor heat exchanger, thus having a cascading effect on the system's pressure distribution. When the water temperature on the water side is low, the refrigerant evaporation process is gradual, and the system's exhaust pressure remains within a safe range. In this case, the heat pump air conditioner can execute the exit operation according to the conventional defrosting control logic. However, when the water temperature on the water side is too high, it will significantly accelerate the refrigerant evaporation rate, causing a sharp increase in the amount of refrigerant vapor on the compressor's suction side. This directly leads to an increase in suction pressure, which in turn further drives a synchronous increase in the system's exhaust pressure. Therefore, by monitoring whether the suction pressure reaches a threshold, the load risk caused by ineffective defrosting in heat pump air conditioners can be accurately identified.
[0037] Alternatively, the current state of load risk can be determined when both the third and fourth conditions are met. This way, a risk state is only confirmed when both key indicators show abnormal characteristics simultaneously, avoiding misjudgments caused by fluctuations or anomalies in a single sensor.
[0038] In some embodiments of this application, the first condition is that the coil temperature is greater than or equal to a first temperature threshold, and the second condition is that the coil temperature is greater than or equal to a second temperature threshold.
[0039] The second temperature threshold is less than the first temperature threshold.
[0040] For example, in practical applications, the following threshold settings can be used: in normal scenarios, the first temperature threshold is set to the range of 16℃-20℃, and the second temperature threshold is set to 10℃.
[0041] Understandably, this threshold setting logic allows the system to exit the defrosting mode early when it identifies a risk of defrosting load, using a lower coil temperature as the exit trigger point, thereby terminating the ineffective defrosting process in a timely manner and improving overall operating efficiency.
[0042] In some embodiments of this application, the first condition is that the cumulative defrosting time is greater than or equal to a first time threshold, and the second condition is that the cumulative defrosting time is greater than or equal to a second time threshold.
[0043] The second duration threshold is less than the first duration threshold.
[0044] For example, in practical applications, the following threshold settings can be adopted: in normal scenarios, the first duration threshold is set to 8-10 minutes, and the second duration threshold is set to 3-5 minutes.
[0045] Understandably, this time threshold setting logic allows the system to use a shorter cumulative defrosting time as the exit trigger point when it identifies a defrosting load risk, thereby terminating the defrosting mode in advance, thus ending the ineffective defrosting process in time and improving overall operating efficiency.
[0046] S103, when the second condition is met, exit the defrost mode.
[0047] Optionally, when the system detects that any operating parameter meets the criteria for the second defrost exit condition, it directly controls the air conditioner to switch out of defrost mode, including shutting down defrost-related actuators (such as four-way valve reversal, electric heating stop, and defrost valve closure), and restarting or adjusting the fan, throttling components, etc., according to normal working logic, so as to avoid energy consumption loss and system load risk caused by ineffective defrosting in a timely manner.
[0048] In some embodiments of this application, exiting the defrosting mode in step S103 specifically includes the following steps: controlling the operation of the external fan until the pressure relief completion condition is met, and then exiting the defrosting mode.
[0049] Understandably, in this embodiment, the outdoor fan is started in advance before directly exiting the defrost mode, until the pressure relief condition is met. The operation of the fan forces airflow to cool the outdoor heat exchanger, which is in a high-temperature state. The continuous airflow of the outdoor fan can quickly remove the condensed heat on the surface of the heat exchanger. In this way, the refrigerant pressure and temperature on the high-pressure side of the air conditioning system can be effectively reduced, creating a safe pressure relief window for subsequent mode switching of the system. This avoids operational fluctuations caused by directly switching the operating mode under high-pressure conditions, and ensures the operational stability of the air conditioning system.
[0050] In some embodiments of this application, the pressure relief completion conditions include the operating length of the external fan being greater than or equal to a second duration threshold, and / or the coil pressure being less than or equal to a second pressure threshold, and / or the coil pressure drop rate being less than or equal to a rate threshold.
[0051] For example, in practical applications, the following parameter settings can be used: set the second duration threshold of the outdoor fan to 3-5 seconds, set the second pressure threshold of the coil to 1.2 MPa in conjunction with the normal operating parameters of the air conditioning system, and set the coil pressure drop rate threshold to 0.05 MPa / s. Accordingly, during the pressure relief phase after the defrost mode exits, the system can be considered depressurized once any of the following conditions are met: the outdoor fan starts and runs continuously for 3-5 seconds, or the coil pressure drops to 1.2 MPa or below, or the coil pressure drop rate slows down to 0.05 MPa / s or below.
[0052] Understandably, the outdoor fan's operating time is a fundamental time guarantee, ensuring the heat exchanger has sufficient forced heat dissipation time to avoid incomplete pressure relief due to insufficient heat dissipation. The coil pressure threshold is a core pressure judgment indicator, directly reflecting whether the refrigerant pressure on the high-pressure side of the system has dropped to a safe range, providing a core safety basis for mode switching. The coil pressure drop rate threshold is an auxiliary trend judgment standard. When the pressure drop rate tends to stabilize, it indicates that the system pressure has approached a stable safe value. Even if the preset pressure threshold has not been reached, there is no need to continue heat dissipation, avoiding energy waste and heating efficiency loss caused by excessive pressure relief. The complementary and flexible judgment of multiple dimensions can ensure the safety and thoroughness of system pressure relief while also taking into account pressure relief efficiency, avoiding unnecessary time consumption.
[0053] In some embodiments of this application, after exiting the defrost mode when the second condition is met, the method is further configured to: switch the defrost exit condition from the second condition to the first condition.
[0054] Understandably, this mechanism ensures closed-loop management of the defrosting logic, enabling the system to return to a standard monitoring state after the current defrosting task is completed, thus preparing for the next possible defrosting cycle and preventing subsequent control logic from becoming chaotic due to unreset conditions.
[0055] In the above embodiments, by acquiring target evaluation parameters for assessing defrost load, when the parameters indicate a load risk state, the defrost exit condition is switched from the initial first condition to a more easily triggered second condition, and the defrost mode is exited in a timely manner when the second condition is met. This solution can dynamically adjust the exit timing according to the actual defrost load, ensuring that the system can respond quickly and exit the defrost mode immediately after the frost layer has actually melted. This effectively improves the problem of delayed defrost exit timing caused by fixed duration or preset pipe temperature threshold control in the prior art, avoids the system being in an ineffective defrost state for a long time, and significantly improves the operating efficiency of the air conditioning system.
[0056] To facilitate better implementation of the defrosting control method of this application, this application also provides a defrosting control device based on the above-described defrosting control method. The meanings of the terms used are the same as in the defrosting control method described above, and specific implementation details can be found in the descriptions of the method embodiments.
[0057] Please see Figure 2 , Figure 2 This is a schematic diagram of the defrosting control device provided in the embodiments of this application, which may specifically include: The parameter acquisition module 201 is used to acquire target evaluation parameters after entering the defrost mode; wherein, the target evaluation parameters are used to evaluate the defrost load; The condition switching module 202 is used to switch the defrost exit condition from the initial first condition to the second condition when the target evaluation parameters indicate that the current state is under load risk; wherein the second condition is more likely to be triggered than the first condition. The mode proposal module 203 is used to exit the defrost mode when the second condition is met.
[0058] In the above embodiment, the parameter acquisition module 201 is used to acquire target evaluation parameters for assessing defrost load, and the condition switching module 202 is used to switch the defrost exit condition from the initial first condition to a more easily triggered second condition when the parameter indicates a load risk state. The mode proposal module 203 is used to exit the defrost mode in a timely manner when the second condition is met. This solution can dynamically adjust the exit timing according to the actual defrost load, ensuring that the system can respond quickly and exit the defrost mode immediately after the frost layer actually melts. This effectively improves the problem of delayed defrost exit timing caused by fixed duration or preset pipe temperature threshold control in the prior art, avoids the system being in an ineffective defrost state for a long time, and significantly improves the operating efficiency of the air conditioning system.
[0059] In some embodiments of this application, the target evaluation parameters include coil temperature, coil temperature rise rate, and compressor suction side pressure. Before the condition switching module 202 switches the defrost exit condition from the initial first condition to the second condition, it is also used for: When the coil temperature is within the phase change temperature monitoring range and the coil temperature meets the third condition, and / or the suction side pressure meets the fourth condition, it is determined that the current state is under load risk; wherein, the third condition is that the temperature rise rate is greater than or equal to the rise rate value and the duration is greater than the first duration threshold, and the fourth condition is that the suction side pressure is greater than or equal to the first pressure threshold.
[0060] In some embodiments of this application, the first condition is that the coil temperature is greater than or equal to a first temperature threshold, and the second condition is that the coil temperature is greater than or equal to a second temperature threshold; wherein the second temperature threshold is less than the first temperature threshold.
[0061] In some embodiments of this application, the first condition is that the cumulative defrosting time is greater than or equal to a first time threshold, and the second condition is that the cumulative defrosting time is greater than or equal to a second time threshold; wherein, the second time threshold is less than the first time threshold.
[0062] In some embodiments of this application, the mode proposal module 203 exits the defrost mode, including: Control the operation of the external fan until the pressure relief condition is met, then exit the defrosting mode.
[0063] In some embodiments of this application, the pressure relief completion conditions include the operating length of the external fan being greater than or equal to a second duration threshold, and / or the coil pressure being less than or equal to a second pressure threshold, and / or the coil pressure drop rate being less than or equal to a rate threshold.
[0064] In some embodiments of this application, after the mode proposal module 203 exits the defrost mode when the second condition is met, it is further configured to: switch the defrost exit condition from the second condition to the first condition.
[0065] In addition, this application also provides an air conditioner, such as Figure 3 As shown, it illustrates the structural diagram of the air conditioner involved in this application, specifically: The air conditioner may include components such as a processor 301 with one or more processing cores, a memory 302 with one or more computer-readable storage media, a power supply 303, and an input unit 304. Those skilled in the art will understand that... Figure 3 The air conditioner structure shown does not constitute a limitation on the air conditioner and may include more or fewer components than shown, or combine certain components, or have different component arrangements. Wherein: The processor 301 is the control center of the air conditioner. It connects to various parts of the air conditioner via various interfaces and lines. By running or executing software programs and / or modules stored in the memory 302, and by calling data stored in the memory 302, it performs various functions and processes data, thereby providing overall monitoring of the air conditioner. Optionally, the processor 301 may include one or more processing cores; preferably, the processor 301 may integrate an application processor and a modem processor, wherein the application processor mainly handles the operating system, user interface, and applications, and the modem processor mainly handles wireless communication. It is understood that the modem processor may not be integrated into the processor 301.
[0066] The memory 302 can be used to store software programs and modules. The processor 301 executes various functional applications and data processing by running the software programs and modules stored in the memory 302. The memory 302 may mainly include a program storage area and a data storage area. The program storage area may store the operating system, applications required for at least one function, etc.; the data storage area may store data created based on the use of the air conditioner, etc. In addition, the memory 302 may include high-speed random access memory, and may also include non-volatile memory, such as at least one disk storage device, flash memory device, or other volatile solid-state storage device. Accordingly, the memory 302 may also include a memory controller to provide the processor 301 with access to the memory 302.
[0067] The air conditioner also includes a power supply 303 that supplies power to various components. Preferably, the power supply 303 can be logically connected to the processor 301 through a power management system, thereby enabling functions such as charging, discharging, and power consumption management through the power management system. The power supply 303 may also include one or more DC or AC power supplies, recharging systems, power equipment debugging circuits, power converters or inverters, power status indicators, and other arbitrary components.
[0068] The air conditioner may also include an input unit 304, which can be used to receive input digital or character information, and generate keyboard, mouse, joystick, optical or trackball signal inputs related to user settings and function control.
[0069] Although not shown, the air conditioner may also include a display unit, etc., which will not be described in detail here. Specifically, in this embodiment, the processor 301 in the air conditioner will load the executable files corresponding to the processes of one or more application programs into the memory 302 according to the following instructions, and the processor 301 will run the application programs stored in the memory 302 to realize the steps in any of the defrosting control methods provided in this application embodiment: after entering the defrosting mode, the target evaluation parameters are obtained; wherein, the target evaluation parameters are used to evaluate the defrosting load; when the target evaluation parameters indicate that the current state is at risk of load, the defrosting exit condition is switched from the initial first condition to the second condition; wherein, the second condition is more easily triggered than the first condition; when the second condition is met, the defrosting mode is exited.
[0070] In the above embodiments, by acquiring target evaluation parameters for assessing defrost load, when the parameters indicate a load risk state, the defrost exit condition is switched from the initial first condition to a more easily triggered second condition, and the defrost mode is exited in a timely manner when the second condition is met. This solution can dynamically adjust the exit timing according to the actual defrost load, ensuring that the system can respond quickly and exit the defrost mode immediately after the frost layer has actually melted. This effectively improves the problem of delayed defrost exit timing caused by fixed duration or preset pipe temperature threshold control in the prior art, avoids the system being in an ineffective defrost state for a long time, and significantly improves the operating efficiency of the air conditioning system.
[0071] For details on the implementation of each of the above operations, please refer to the previous examples, which will not be repeated here.
[0072] Those skilled in the art will understand that all or part of the steps in the various methods of the above embodiments can be performed by instructions, or by instructions controlling related hardware. These instructions can be stored in a computer-readable storage medium and loaded and executed by a processor.
[0073] Therefore, this application provides a computer-readable storage medium storing a computer program that can be loaded by a processor to execute the steps of any of the defrosting control methods provided in this application.
[0074] For details on the implementation of each of the above operations, please refer to the previous examples, which will not be repeated here.
[0075] The computer-readable storage medium may include: read-only memory (ROM), random access memory (RAM), disk or optical disk, etc.
[0076] Since the instructions stored in the computer-readable storage medium can execute the steps of any of the defrosting control methods provided in this application, the beneficial effects that any of the defrosting control methods provided in this application can achieve can be realized, as detailed in the preceding embodiments, and will not be repeated here.
[0077] The defrosting control method, apparatus, air conditioner, and computer-readable storage medium provided in this application have been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only for the purpose of helping to understand the method and core ideas of the present invention. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of the present invention. Therefore, the content of this specification should not be construed as a limitation of the present invention.
Claims
1. A defrosting control method, characterized in that, The method includes: After entering defrost mode, target evaluation parameters are obtained; wherein, the target evaluation parameters are used to evaluate the defrost load; When the target assessment parameter indicates that the current state is at risk of overload, the defrost exit condition is switched from the initial first condition to the second condition; wherein the second condition is more likely to be triggered than the first condition. When the second condition is met, exit the defrosting mode.
2. The defrosting control method according to claim 1, characterized in that, The target evaluation parameters include coil temperature, coil temperature rise rate, and compressor suction side pressure. Before switching the defrost exit condition from the initial first condition to the second condition, the following steps are also included: When the coil temperature is within the phase change temperature monitoring range and the coil temperature meets the third condition, and / or the suction side pressure meets the fourth condition, it is determined that the current state is under load risk; wherein, the third condition is that the temperature rise rate is greater than or equal to the rise rate value and the duration is greater than the first duration threshold, and the fourth condition is that the suction side pressure is greater than or equal to the first pressure threshold.
3. The defrosting control method according to claim 1, characterized in that, The first condition is that the coil temperature is greater than or equal to a first temperature threshold, and the second condition is that the coil temperature is greater than or equal to a second temperature threshold; wherein, the second temperature threshold is less than the first temperature threshold.
4. The defrosting control method according to claim 1, characterized in that, The first condition is that the cumulative defrosting time is greater than or equal to a first time threshold, and the second condition is that the cumulative defrosting time is greater than or equal to a second time threshold; wherein the second time threshold is less than the first time threshold.
5. The defrosting control method according to claim 1, characterized in that, Exiting the defrost mode includes: Control the operation of the external fan until the pressure relief condition is met, then exit the defrosting mode.
6. The defrosting control method according to claim 5, characterized in that, The pressure relief completion conditions include the outdoor fan's operating time being greater than or equal to a second duration threshold, and / or the coil pressure being less than or equal to a second pressure threshold, and / or the coil pressure drop rate being less than or equal to a rate threshold.
7. The defrosting control method according to claim 1, characterized in that, After exiting the defrost mode when the second condition is met, the method further includes: Switch the defrost exit condition from the second condition to the first condition.
8. A defrosting control device, characterized in that, The defrosting control device includes: The parameter acquisition module is used to acquire target evaluation parameters after entering the defrost mode; wherein, the target evaluation parameters are used to evaluate the defrost load; The condition switching module is used to switch the defrost exit condition from an initial first condition to a second condition when the target evaluation parameter indicates that the current state is under load risk; wherein the second condition is more likely to be triggered than the first condition. The mode proposal module is used to exit the defrost mode when the second condition is met.
9. A computer-readable storage medium, characterized in that, The device stores a computer program that, when executed by a processor, causes the processor to perform the steps of the method as described in any one of claims 1 to 7.
10. An air conditioner, characterized in that, It includes a memory and a processor, the memory storing a computer program that, when executed by the processor, causes the processor to perform the steps of the method as described in any one of claims 1 to 7.