Anti-freezing control method and anti-freezing control device for air conditioner and air conditioner

Abstract

The invention provides an anti-freezing control method and device for an air conditioner and the air conditioner. The control method comprises the steps that it is determined that the air conditioner is started and stably operates a refrigeration mode, and the indoor relative humidity and the coil pipe temperature of an indoor heat exchanger are obtained; and according to the indoor relative humidity and the coil pipe temperature, freezing protection logic of the air conditioner in a refrigeration mode is generated, and the freezing protection logic is executed. According to the anti-freezing control method and device of the air conditioner and the air conditioner, the possibility of frosting or freezing is judged more accurately by combining the two parameters of the indoor relative humidity and the coil pipe temperature, so that misoperation is reduced, unnecessary shutdown defrosting or deicing can be avoided, continuous operation of an air conditioner system is kept, and the service life of the air conditioner system is prolonged. And the comfortable experience of the user is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of electrical appliances, and in particular to a freeze prevention control method and device for an air conditioner and the air conditioner. BACKGROUND

[0002] In related technologies, when an existing air conditioning unit is in a refrigeration mode, if the outdoor and indoor temperatures are lower than 22 degrees, the indoor unit is usually in a low wind state, the heat exchange effect of the indoor heat exchanger is poor, the refrigerant in the heat exchanger is not fully evaporated, and the semi-liquid refrigerant flows back to the compressor, which reduces the suction pressure and the evaporation temperature, and may cause the evaporation temperature of the heat exchanger to be below zero degrees, resulting in frost or even ice on the heat exchanger. If the frost or ice is not removed for a long time, the heat exchanger will be completely blocked by frozen water, and there will be no refrigeration effect or the water pan will be frozen.

[0003] The existing frost and freeze detection scheme detects the temperature of the indoor heat exchanger coil, and stops the machine when the temperature is below a certain degree. If the temperature is set too low, the indoor heat exchanger may cause severe frost on the heat exchanger, even extending to the water pan, causing the water pan to be blocked and overflow. If the temperature is set too high, the machine will be frequently started and stopped in the case of slight frost or no frost on the indoor heat exchanger, thereby affecting the comfort of use. SUMMARY

[0004] The present application provides a freeze prevention control method and device for an air conditioner and the air conditioner to solve the defects in the prior art and achieve the following technical effects: The present application combines the indoor relative humidity and the coil temperature to more accurately determine the possibility of frost or freeze, thereby reducing the risk of misoperation and avoiding unnecessary frost or ice removal, maintaining the continuous operation of the air conditioning system and improving the comfort of the user.

[0005] The freeze prevention control method for an air conditioner according to the first aspect of the present application comprises:

[0006] determining that the air conditioner is turned on and stably operating in a refrigeration mode, obtaining the indoor relative humidity and the coil temperature of the indoor heat exchanger;

[0007] generating a freeze protection logic for the air conditioner in the refrigeration mode according to the indoor relative humidity and the coil temperature, and executing the freeze protection logic.

[0008] According to an embodiment of the present application, in the step of generating a freeze protection logic for the air conditioner in the refrigeration mode according to the indoor relative humidity and the coil temperature, and executing the freeze protection logic:

[0009] The freeze protection logic comprises: controlling the air conditioner to perform a freeze protection operation after a target setting duration; wherein the target setting duration is determined according to the interval of the indoor relative humidity and the interval of the coil temperature.

[0010] In this way, a more intelligent and adaptive freeze protection mechanism is provided. It not only optimizes the timing and duration of the protection operation according to real-time environmental data, but also reduces energy consumption and improves the operating efficiency of the air conditioning system, thereby improving the user experience and the reliability of the system.

[0011] According to an embodiment of the present application, the step of generating the freeze protection logic of the air conditioner in the cooling mode according to the indoor relative humidity and the coil temperature, and executing the freeze protection logic, specifically comprises:

[0012] In the case that the indoor relative humidity is greater than or equal to a first set humidity, the coil temperature is less than a first set temperature and greater than or equal to a second set temperature, the air conditioner is controlled to perform the freeze protection operation after a first set duration.

[0013] In this way, it is ensured that the air conditioner can accurately and timely implement freeze protection under the current indoor relative humidity and the current coil temperature, reducing the risk of air conditioner indoor unit freezing.

[0014] According to an embodiment of the present application, the step of generating the freeze protection logic of the air conditioner in the cooling mode according to the indoor relative humidity and the coil temperature, and executing the freeze protection logic, specifically comprises:

[0015] In the case that the indoor relative humidity is greater than or equal to a first set humidity, the coil temperature is less than a second set temperature, the air conditioner is controlled to perform the freeze protection operation after a second set duration;

[0016] Wherein, the first set duration is greater than the second set duration.

[0017] In this way, it is ensured that the air conditioner can accurately and timely implement freeze protection under the current indoor relative humidity and the current coil temperature, reducing the risk of air conditioner indoor unit freezing.

[0018] According to an embodiment of the present application, the step of generating the freeze protection logic of the air conditioner in the cooling mode according to the indoor relative humidity and the coil temperature, and executing the freeze protection logic, specifically comprises:

[0019] in a case that the indoor relative humidity is less than the first set humidity and greater than or equal to the second set humidity, and the coil temperature is less than the first set temperature and greater than or equal to the second set temperature, controlling the air conditioner to perform the freeze protection operation after a third set time length;

[0020] wherein the third set time length is greater than the first set time length.

[0021] In this way, it is ensured that the air conditioner can accurately and timely realize the anti-freezing protection under the current indoor relative humidity and the current coil temperature, reducing the risk of freezing of the air conditioner indoor unit.

[0022] According to an embodiment of the present application, the step of generating the freeze protection logic of the air conditioner in the cooling mode according to the indoor relative humidity and the coil temperature, and executing the freeze protection logic specifically comprises:

[0023] in a case that the indoor relative humidity is less than the first set humidity and greater than or equal to the second set humidity, and the coil temperature is less than the second set temperature, controlling the air conditioner to perform the freeze protection operation after a fourth set time length;

[0024] wherein the fourth set time length is greater than the second set time length and less than the first set time length.

[0025] In this way, it is ensured that the air conditioner can accurately and timely realize the anti-freezing protection under the current indoor relative humidity and the current coil temperature, reducing the risk of freezing of the air conditioner indoor unit.

[0026] According to an embodiment of the present application, the step of generating the freeze protection logic of the air conditioner in the cooling mode according to the indoor relative humidity and the coil temperature, and executing the freeze protection logic specifically comprises:

[0027] in a case that the indoor relative humidity is less than the second set humidity and greater than or equal to a third set humidity, and the coil temperature is less than the first set temperature and greater than or equal to the second set temperature, controlling the air conditioner to perform the freeze protection operation after a fifth set time length;

[0028] wherein the fifth set time length is greater than the third set time length.

[0029] In this way, it is ensured that the air conditioner can accurately and timely realize the anti-freezing protection under the current indoor relative humidity and the current coil temperature, reducing the risk of freezing of the air conditioner indoor unit.

[0030] According to an embodiment of the present application, the step of generating the freeze protection logic of the air conditioner in the cooling mode according to the indoor relative humidity and the coil temperature, and executing the freeze protection logic specifically comprises:

[0031] in the case that the indoor relative humidity is less than the second set humidity and greater than or equal to the third set humidity, and the coil temperature is less than the second set temperature, controlling the air conditioner to perform the freeze protection operation after a sixth set time length;

[0032] wherein the sixth set time length is greater than the fourth set time length and less than or equal to the first set time length.

[0033] In this way, it is ensured that the air conditioner can accurately and timely implement freeze protection under the current indoor relative humidity and the current coil temperature, reducing the risk of freezing of the air conditioner indoor unit.

[0034] According to an embodiment of the present application, the step of generating the freeze protection logic of the air conditioner in the cooling mode according to the indoor relative humidity and the coil temperature, and executing the freeze protection logic specifically comprises:

[0035] in the case that the indoor relative humidity is less than the third set humidity, the coil temperature is less than the first set temperature and greater than or equal to the second set temperature, controlling the air conditioner to perform the freeze protection operation after a seventh set time length;

[0036] wherein the seventh set time length is greater than the fifth set time length.

[0037] In this way, it is ensured that the air conditioner can accurately and timely implement freeze protection under the current indoor relative humidity and the current coil temperature, reducing the risk of freezing of the air conditioner indoor unit.

[0038] According to an embodiment of the present application, the step of generating the freeze protection logic of the air conditioner in the cooling mode according to the indoor relative humidity and the coil temperature, and executing the freeze protection logic specifically comprises:

[0039] in the case that the indoor relative humidity is less than the third set humidity, and the coil temperature is less than the second set temperature, controlling the air conditioner to perform the freeze protection operation after an eighth set time length;

[0040] wherein the eighth set time length is greater than the sixth set time length and the first set time length.

[0041] In this way, it is ensured that the air conditioner can accurately and timely implement freeze protection under the current indoor relative humidity and the current coil temperature, reducing the risk of freezing of the air conditioner indoor unit.

[0042] According to an embodiment of the present application, after the step of generating the freeze protection logic of the air conditioner in the cooling mode according to the indoor relative humidity and the coil temperature, and executing the freeze protection logic, it further comprises:

[0043] determining that the coil temperature is greater than or equal to a third set temperature, ending the freeze protection operation and continuing to run the cooling mode.

[0044] In this way, through this design, the present application not only can effectively prevent and deal with the freezing problem, but also can ensure that the air conditioning system can resume normal operation in time after the freezing risk is eliminated, thereby maximizing the energy efficiency and user comfort.

[0045] The anti-freezing control device of the air conditioner according to the second aspect of the present application comprises:

[0046] an acquisition module configured to determine that the air conditioner is turned on and stably runs in a cooling mode, and acquire an indoor relative humidity and a coil temperature of the indoor heat exchanger;

[0047] a control module configured to generate a freeze protection logic of the air conditioner in the cooling mode according to the indoor relative humidity and the coil temperature, and execute the freeze protection logic.

[0048] The air conditioner according to the third aspect of the present application comprises a memory, a processor, and a computer program stored in the memory and executable on the processor, and the processor executes the program to realize the anti-freezing control method of the air conditioner according to the first aspect of the present application.

[0049] The present application provides an anti-freezing control method for an air conditioner, which has at least the following advantages compared with related art:

[0050] (1) Improved accuracy: related art mainly relies on the coil temperature to determine whether to defrost or deice, which may lead to misjudgment, such as frequent start-stop or insufficient defrosting when the temperature setting is inaccurate. The present application combines indoor relative humidity and coil temperature to more accurately determine the likelihood of frosting or freezing, thereby reducing misoperation.

[0051] (2) Enhanced comfort: in related art, improper temperature setting may cause the indoor heat exchanger to frost heavily or stop frequently, affecting user comfort. The present application avoids unnecessary stop-defrosting or deicing through intelligent judgment mechanism, maintains continuous operation of the air conditioning system, and improves user comfort experience.

[0052] (3) Energy saving and high efficiency: traditional defrosting control method may cause energy waste, as it may start the defrosting process unnecessarily. The present application precisely controls the timing of defrosting or deicing, avoiding unnecessary energy consumption and improving the energy efficiency ratio of the system.

[0053] (4) Reducing maintenance costs: Frequent start-stop and improper defrosting control can accelerate the wear and tear of the air conditioning system, increasing maintenance costs. The present application optimizes the control strategy, reduces the mechanical wear and tear of the system, prolongs the service life of the equipment, and thus reduces the long-term maintenance costs.

[0054] (5) Strong adaptability: Related technologies may not be stable under different environmental conditions and require frequent parameter adjustments. The present application can intelligently adjust the protection measures according to real-time environmental changes, has strong adaptability and stability, and is suitable for a variety of different environmental conditions.

[0055] In summary, the multi-split anti-freezing protection method of the present application improves the operating efficiency, stability and user comfort of the air conditioning system by intelligent control and comprehensive consideration of multiple environmental parameters, while reducing energy consumption and maintenance costs, and has significant technical advantages. BRIEF DESCRIPTION OF DRAWINGS

[0056] In order to more clearly illustrate the technical solutions in the present application or prior art, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings in the following description are some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor.

[0057] Figure 1 is a flowchart of the anti-freezing control method of the air conditioner provided by the present application;

[0058] Figure 2 is a structural schematic diagram of the anti-freezing control device of the air conditioner provided by the present application;

[0059] Figure 3 is a structural schematic diagram of the electronic device provided by the present application. DETAILED DESCRIPTION

[0060] In order to make the purpose, technical solutions and advantages of the present application clearer, the technical solutions in the present application will be described clearly and completely in conjunction with the drawings in the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0061] The following describes the anti-freezing control method, anti-freezing control device and air conditioner of the air conditioner proposed by the present invention with reference to the accompanying drawings. Before describing the embodiment of the present invention in detail, the entire application scenario is first described. The anti-freezing control method, anti-freezing control device, electronic device and computer-readable storage medium of the air conditioner of the embodiment of the present invention can be applied to the air conditioner locally, can be applied to the cloud platform in the Internet field, or other types of cloud platforms in the Internet field, or can also be applied to third-party devices. Among them, the third-party device may include a variety of different types such as mobile phones, tablet computers, notebooks, car computers and other smart terminals.

[0062] The following description only takes the anti-freezing control method applicable to air conditioners as an example. It should be understood that the anti-freezing control method of the embodiment of the present invention can also be applied to cloud platforms and third-party devices.

[0063] like Figure 1 As shown, the anti-freezing control method of the air conditioner according to the first embodiment of the present invention includes:

[0064] Step S1, determining that the air conditioner is turned on and stably operates in cooling mode, and obtaining indoor relative humidity and coil temperature of the indoor heat exchanger;

[0065] Step S2: generating a freeze protection logic for the air conditioner in cooling mode according to the indoor relative humidity and the coil temperature, and executing the freeze protection logic.

[0066] According to the anti-freezing control method of the air conditioner according to an embodiment of the present invention, its specific working process and working principle are as follows: In step S1, when the air conditioner is turned on and stably operates in the cooling mode, the system first needs to obtain two key environmental parameters: indoor relative humidity and the coil temperature of the indoor heat exchanger.

[0067] For indoor relative humidity, a temperature and humidity sensor installed indoors can measure the current relative humidity, which reflects the moisture content in the air. For coil temperature, a coil temperature sensor installed on the indoor heat exchanger can measure the real-time coil temperature, which reflects the current thermal status of the heat exchanger.

[0068] Furthermore, in step S2, based on the acquired indoor relative humidity and coil temperature, the system generates and executes a freeze protection logic. Specifically, the system uses a preset algorithm and parameter thresholds, combined with the real-time indoor relative humidity and coil temperature, to determine whether there is a risk of frost or freezing under the current environmental conditions. If the system determines that there is a risk of freezing, it will initiate appropriate protective measures. These measures may include adjusting operating parameters (such as reducing cooling capacity, increasing wind speed, etc.) or directly entering a short defrost / de-icing mode to prevent frost or freezing on the heat exchanger surface.

[0069] It can be understood that the working principle of the present application is based on real-time monitoring and intelligent analysis of indoor environmental parameters. By monitoring the indoor relative humidity and the coil temperature, the system can assess the possibility of frosting or freezing. The key of this method is that it not only relies on a single temperature parameter, but also combines humidity information, making the judgment more accurate and comprehensive.

[0070] In the judgment process, both humidity and temperature are important reference indicators. In a high humidity environment, the air contains more moisture, which is more likely to condense into frost on the surface of the low-temperature heat exchanger. The decrease of the coil temperature may mean that the surface temperature of the heat exchanger is close to or below the dew point temperature, which is a precursor to frosting. Therefore, by analyzing the relative humidity and the coil temperature in real time through the built-in algorithm, the system can intelligently generate freezing protection logic based on real-time data and dynamically adjust the operation strategy to adapt to changing environmental conditions.

[0071] Through this method, the air conditioning system can effectively prevent and reduce the performance decline and shutdown problems caused by frosting or freezing, thereby improving the stability of the air conditioning system and the comfort of the user. At the same time, this method can also reduce energy consumption and maintenance costs, and has high practical value.

[0072] In the related art, when the existing air conditioning unit is in refrigeration operation, if the outdoor and indoor temperatures are lower than 22 degrees, at this time, the indoor unit is usually low wind, the indoor heat exchanger has poor heat exchange effect, the refrigerant in the heat exchanger evaporates incompletely, the refrigerant is semi-liquidized and flows back to the compressor, resulting in a decrease in suction pressure and a decrease in evaporation temperature, which may cause the evaporation temperature of the heat exchanger to drop below zero degrees, and the heat exchanger to condense water and frost or even freeze. Long time will cause the heat exchanger to be completely blocked by frozen water, and there will be no refrigeration effect or even the water pan will be frozen. At this time, the machine needs to be stopped for defrosting or deicing. The existing frosting and freezing detection scheme detects the temperature of the indoor heat exchanger coil, and stops the machine for defrosting or deicing when the temperature is below a certain degree. If the temperature is set too low, the indoor heat exchanger may cause severe frosting of the heat exchanger, even extending to the water pan, causing the water pan to be blocked and overflow. If the temperature is set too high, the indoor heat exchanger may be slightly frosted or have no frost, which will cause frequent start-stop of the machine, thereby affecting the use comfort.

[0073] Therefore, in order to solve the technical defects existing in the related art, the present application provides a freeze prevention control method for air conditioning, which has at least the following advantages compared with the related art:

[0074] (1) Improve accuracy: the related art mainly relies on the coil temperature to determine whether to defrost or deice, which may cause misjudgment, such as frequent start-stop or insufficient defrosting when the temperature setting is inaccurate. The present application combines indoor relative humidity and coil temperature to more accurately judge the possibility of frosting or freezing, thereby reducing misoperation.

[0075] (2) Enhancing comfort: In related technologies, improper temperature point settings can lead to severe frosting of indoor heat exchangers or frequent start-stop operations, affecting user comfort. The present application avoids unnecessary defrosting or ice melting through intelligent judgment mechanisms, maintains continuous operation of the air conditioning system, and improves user comfort experience.

[0076] (3) Energy saving and high efficiency: Traditional defrosting control methods can lead to energy waste as they may initiate the defrosting process unnecessarily. The present application avoids unnecessary energy consumption by precisely controlling the timing of defrosting or ice melting, improving the energy efficiency ratio of the system.

[0077] (4) Reducing maintenance costs: Frequent start-stop and improper defrosting control can accelerate the wear and tear of air conditioning systems, increasing maintenance costs. The present application reduces mechanical wear and tear of the system through optimized control strategies, prolongs the service life of the equipment, and thus reduces long-term maintenance costs.

[0078] (5) Strong adaptability: Related technologies may not be stable under different environmental conditions and require frequent parameter adjustments. The present application can intelligently adjust protection measures according to real-time environmental changes, has strong adaptability and stability, and is suitable for a variety of different environmental conditions.

[0079] In summary, the multi-split air conditioner anti-freezing protection method of the present application improves the operating efficiency, stability and user comfort of the air conditioning system through intelligent control and comprehensive consideration of multiple environmental parameters, while reducing energy consumption and maintenance costs, and has significant technical advantages.

[0080] According to some embodiments of the present application, in the steps of generating freezing protection logic of the air conditioner in cooling mode according to indoor relative humidity and coil temperature, and executing the freezing protection logic:

[0081] The freezing protection logic includes: controlling the air conditioner to perform a freezing protection operation after a target set duration; wherein the target set duration is determined according to the interval in which the indoor relative humidity is located and the interval in which the coil temperature is located.

[0082] It can be understood that the composition of the freeze protection logic mainly consists of three parts: first, real-time data monitoring: the air conditioning system monitors the indoor relative humidity and coil temperature in real time through the built-in sensors, which are crucial for determining whether frost or freeze will occur; second, parameter interval division: according to the pre-set standards or the learned model, the system maps the measured values of relative humidity and coil temperature to different intervals, where each interval represents a different freeze risk level; third, determination of target setting duration: the system determines the target setting duration for executing freeze protection operations according to the interval of relative humidity and coil temperature. For example, if the relative humidity is high and the coil temperature is low, the system may set a shorter duration to perform protection operations more frequently to prevent freeze from occurring.

[0083] Further, the execution of the freeze protection logic can also generally be divided into three detailed steps: first, execute the countdown mechanism, that is, once the target setting duration is determined, the system will start a countdown mechanism. During this period, the air conditioning system continues to operate normally, but at the same time prepares to perform freeze protection operations. Second, execute freeze protection, specifically, when the countdown ends, the air conditioning system automatically performs freeze protection operations. This may include temporarily switching to defrost mode, adjusting operating parameters, or taking other necessary measures to raise the coil temperature and prevent frost formation. Finally, perform intelligent adjustment and optimization, for example, while performing freeze protection operations, the system continuously monitors changes in the indoor environment, and if the environmental conditions change, the system will re-evaluate the freeze risk based on the new data and adjust the target setting duration or protection measures accordingly.

[0084] In this way, through the above method, the embodiments of the present application can provide a more intelligent and adaptive freeze protection mechanism. It not only can optimize the timing and duration of protection operations according to real-time environmental data, but also can reduce energy consumption and improve the operating efficiency of the air conditioning system, thereby improving the user experience and the reliability of the system.

[0085] According to some embodiments of the present application, the steps of generating freeze protection logic for the air conditioner in cooling mode according to the indoor relative humidity and the coil temperature, and executing the freeze protection logic, specifically include:

[0086] In the case where the indoor relative humidity is greater than or equal to the first set humidity, the coil temperature is less than the first set temperature and greater than or equal to the second set temperature, the air conditioner is controlled to perform freeze protection operations after the first set duration.

[0087] According to some embodiments of the present application, the steps of generating freeze protection logic for the air conditioner in cooling mode according to the indoor relative humidity and the coil temperature, and executing the freeze protection logic, specifically include:

[0088] In a case that the indoor relative humidity is greater than or equal to the first set humidity and the coil temperature is less than the second set temperature, the air conditioner is controlled to perform the freeze protection operation after a second set time length. The first set time length is greater than the second set time length.

[0089] According to still some embodiments of the present application, the steps of generating and executing the freeze protection logic of the air conditioner in the cooling mode according to the indoor relative humidity and the coil temperature specifically include:

[0090] In a case that the indoor relative humidity is less than the first set humidity and greater than or equal to the second set humidity and the coil temperature is less than the first set temperature and greater than or equal to the second set temperature, the air conditioner is controlled to perform the freeze protection operation after a third set time length. The third set time length is greater than the first set time length.

[0091] According to still some embodiments of the present application, the steps of generating and executing the freeze protection logic of the air conditioner in the cooling mode according to the indoor relative humidity and the coil temperature specifically include:

[0092] In a case that the indoor relative humidity is less than the first set humidity and greater than or equal to the second set humidity and the coil temperature is less than the second set temperature, the air conditioner is controlled to perform the freeze protection operation after a fourth set time length.

[0093] The fourth set time length is greater than the second set time length and less than the first set time length.

[0094] According to still some embodiments of the present application, the steps of generating and executing the freeze protection logic of the air conditioner in the cooling mode according to the indoor relative humidity and the coil temperature specifically include:

[0095] In a case that the indoor relative humidity is less than the second set humidity and greater than or equal to a third set humidity and the coil temperature is less than the first set temperature and greater than or equal to the second set temperature, the air conditioner is controlled to perform the freeze protection operation after a fifth set time length.

[0096] The fifth set time length is greater than the third set time length.

[0097] According to still some embodiments of the present application, the steps of generating and executing the freeze protection logic of the air conditioner in the cooling mode according to the indoor relative humidity and the coil temperature specifically include:

[0098] In a case that the indoor relative humidity is less than the second set humidity and greater than or equal to the third set humidity and the coil temperature is less than the second set temperature, the air conditioner is controlled to perform the freeze protection operation after a sixth set time length.

[0099] The sixth set time length is greater than the fourth set time length and less than or equal to the first set time length.

[0100] According to still another embodiment of the present application, the steps of generating and executing the freeze protection logic of the air conditioner in the cooling mode according to the indoor relative humidity and the coil temperature specifically include:

[0101] In the case that the indoor relative humidity is less than the third set humidity and the coil temperature is less than the first set temperature and greater than or equal to the second set temperature, the air conditioner is controlled to perform the freeze protection operation after the seventh set time length.

[0102] Wherein, the seventh set time length is greater than the fifth set time length.

[0103] According to still another embodiment of the present application, the steps of generating and executing the freeze protection logic of the air conditioner in the cooling mode according to the indoor relative humidity and the coil temperature specifically include:

[0104] In the case that the indoor relative humidity is less than the third set humidity and the coil temperature is less than the second set temperature, the air conditioner is controlled to perform the freeze protection operation after the eighth set time length.

[0105] Wherein, the eighth set time length is greater than the sixth set time length and the first set time length.

[0106] It should be noted that the first set humidity, the second set humidity and the third set humidity in the above embodiments all refer to the preset value of the indoor relative humidity by the system or the user in advance, and the first set temperature and the second set temperature are both the preset value of the indoor coil temperature by the system or the user in advance. The first set humidity, the second set humidity, the third set humidity, the first set temperature and the second set temperature can be set to different values according to the requirements and the use environment, which are not specially limited in the present application.

[0107] The following gives a specific embodiment of the indoor relative humidity, the coil temperature and the target set time length.

[0108] When the indoor relative humidity is greater than or equal to 80% and the coil temperature is less than -1℃ and greater than or equal to -6℃, the air conditioner performs the freeze protection operation after 20min of cooling operation; when the indoor relative humidity is greater than or equal to 80% and the coil temperature is less than -6℃, the air conditioner performs the freeze protection operation after 5min of cooling operation.

[0109] When the indoor relative humidity is greater than or equal to 60% and less than 80% and the coil temperature is less than -1℃ and greater than or equal to -6℃, the air conditioner performs the freeze protection operation after 40min of cooling operation; when the indoor relative humidity is greater than or equal to 60% and less than 80% and the coil temperature is less than -6℃, the air conditioner performs the freeze protection operation after 10min of cooling operation.

[0110] When the indoor relative humidity is greater than or equal to 40% and less than 60%, and the coil temperature is less than -1°C and greater than or equal to -6°C, the air conditioner performs a freeze protection operation after 60 minutes of cooling operation; when the indoor relative humidity is greater than or equal to 40% and less than 60%, and the coil temperature is less than -6°C, the air conditioner performs a freeze protection operation after 20 minutes of cooling operation.

[0111] When the indoor relative humidity is less than 40%, and the coil temperature is less than -1°C and greater than or equal to -6°C, the air conditioner performs a freeze protection operation after 80 minutes of cooling operation; when the indoor relative humidity is less than 40%, and the coil temperature is less than -6°C, the air conditioner performs a freeze protection operation after 30 minutes of cooling operation.

[0112] According to some embodiments of the present application, after the steps of generating freeze protection logic for the air conditioner in cooling mode based on indoor relative humidity and coil temperature, and executing the freeze protection logic, the system further includes:

[0113] If the coil temperature is greater than or equal to a third set temperature, the freeze protection operation is ended and the cooling mode is continued.

[0114] In this embodiment, during the execution of the freeze protection operation, the system continuously monitors the coil temperature. This is to ensure that after the protection operation is executed, it can be determined in a timely manner whether to continue to execute or end the protection operation.

[0115] The system pre-sets a third set temperature, which is a threshold value for determining whether the freeze risk has been reduced to a safe level for exiting the freeze protection operation. When the monitored coil temperature reaches or exceeds the third set temperature, the system determines that the freeze risk has been reduced, and at this time the freeze protection operation is ended and the air conditioning system is allowed to continue running in cooling mode. For example, the third set temperature can be 7°C.

[0116] Once the coil temperature meets the end condition, the system automatically exits the freeze protection mode. This means that the special measures taken to prevent freezing (such as defrosting program or adjustment of operating parameters) will be cancelled. After exiting the freeze protection mode, the air conditioning system returns to normal cooling mode operation. The system will continue to provide a comfortable indoor environment for the user according to the indoor temperature and other operating parameters.

[0117] In addition, even after exiting the freeze protection mode, the system will continue to monitor key parameters such as indoor relative humidity and coil temperature to ensure that the air conditioning system can operate stably under various environmental conditions.

[0118] Thus, through this design, the present application not only effectively prevents and responds to freezing problems, but also ensures that the air conditioning system can resume normal operation in a timely manner after the freezing risk is eliminated, thereby maximizing energy efficiency and user comfort. This method embodies the flexibility and responsiveness of the intelligent control system, enabling the air conditioning system to better adapt to environmental changes and provide consistent and stable cooling services.

[0119] The anti-freezing control device of the air conditioner provided by the present application is described below, and the anti-freezing control device of the air conditioner described below can be referred to in correspondence with the anti-freezing control method of the air conditioner described above.

[0120] As shown in Figure 2 The anti-freezing control device of the air conditioner according to the second aspect embodiment of the present application comprises:

[0121] The acquisition module 110 is configured to determine that the air conditioner is turned on and stably operates in a cooling mode, and acquire an indoor relative humidity and a coil temperature of an indoor heat exchanger.

[0122] The control module 120 is configured to generate a freezing protection logic of the air conditioner in the cooling mode according to the indoor relative humidity and the coil temperature, and execute the freezing protection logic.

[0123] The air conditioner according to the third aspect embodiment of the present application comprises a memory, a processor, and a computer program stored in the memory and executable on the processor, and the processor executes the program to implement the anti-freezing control method of the air conditioner according to the first aspect embodiment of the present application.

[0124] Figure 3 An example of a physical structure diagram of an electronic device is shown in Figure 3 The electronic device can include a processor 810, a communications interface 820, a memory 830, and a communications bus 840, wherein the processor 810, the communications interface 820, and the memory 830 can communicate with each other through the communications bus 840. The processor 810 can invoke logical instructions in the memory 830 to execute the anti-freezing control method of the air conditioner, which comprises determining that the air conditioner is turned on and stably operates in a cooling mode, acquiring an indoor relative humidity and a coil temperature of an indoor heat exchanger, generating a freezing protection logic of the air conditioner in the cooling mode according to the indoor relative humidity and the coil temperature, and executing the freezing protection logic.

[0125] Further, the logic instructions in the memory 830 described above can be implemented in the form of software functional units and sold or used as standalone products, and can be stored in a computer readable storage medium. Based on such an understanding, the technical solutions of the present application essentially or partially contribute to the prior art, or part of the technical solutions can be embodied in the form of a software product. The computer software product is stored in a storage medium, and includes a number of instructions for causing a computer device (which can be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the methods according to the embodiments of the present application. The aforementioned storage medium includes: a U disk, a mobile hard disk, a read-only memory (ROM, Read-Only Memory), a random access memory (RAM, Random Access Memory), a magnetic disk or an optical disk, and various media that can store program codes.

[0126] In another aspect, the present application also provides a computer program product, which comprises a computer program, the computer program can be stored on a non-transitory computer readable storage medium, and the computer program is executed by a processor, so that the computer can execute the anti-freezing control method of the air conditioner provided by the above-mentioned methods. The method comprises: determining that the air conditioner is started and stably operated in a cooling mode, obtaining an indoor relative humidity and a coil temperature of an indoor heat exchanger; generating a freezing protection logic of the air conditioner in the cooling mode according to the indoor relative humidity and the coil temperature, and executing the freezing protection logic.

[0127] In another aspect, the present application also provides a computer program product, which comprises a computer program, the computer program can be stored on a non-transitory computer readable storage medium, and the computer program is executed by a processor, so that the computer can execute the anti-freezing control method of the air conditioner provided by the above-mentioned methods. The method comprises: determining that the air conditioner is started and stably operated in a cooling mode, obtaining an indoor relative humidity and a coil temperature of an indoor heat exchanger; generating a freezing protection logic of the air conditioner in the cooling mode according to the indoor relative humidity and the coil temperature, and executing the freezing protection logic.

[0128] The device embodiments described above are only schematic, wherein the units shown as separate components can or can not be physically separate, and the components shown as units can or can not be physical units, that is, they can be located in one place, or distributed on multiple network units. Part or all of the modules can be selected to achieve the purpose of the embodiment according to actual needs. Those skilled in the art can understand and implement without creative labor.

[0129] Those skilled in the art can clearly understand the technical solutions of the various embodiments from the above description of the embodiments, and the various embodiments can be implemented by means of software with the necessary general hardware platforms, and of course can also be implemented by hardware. Based on such understanding, the above technical solutions, essentially or in other words, the part of the prior art that makes a contribution, can be embodied in the form of a software product, which can be stored in a computer readable storage medium, such as a ROM / RAM, a magnetic disk, an optical disk, and the like, and includes a number of instructions to make a computer device (which can be a personal computer, a server, or a network device, etc.) execute the methods of the various embodiments or some parts of the embodiments.

[0130] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, rather than limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for some technical features therein; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A freeze prevention control method of an air conditioner, characterized by, The method comprises the steps of: determining that the air conditioner is turned on and stably operating in a cooling mode, obtaining an indoor relative humidity and a temperature of a coil of an indoor heat exchanger; generating a freeze protection logic of the air conditioner in the cooling mode according to the indoor relative humidity and the temperature of the coil, and executing the freeze protection logic.

2. The anti-freezing control method of the air conditioner according to claim 1, characterized by, In the step of generating the freeze protection logic of the air conditioner in the cooling mode according to the indoor relative humidity and the temperature of the coil, and executing the freeze protection logic, the freeze protection logic comprises: controlling the air conditioner to execute a freeze protection operation after a target setting time length, wherein the target setting time length is determined according to an interval in which the indoor relative humidity is located and an interval in which the temperature of the coil is located.

3. The anti-freezing control method of the air conditioner according to claim 2, characterized by, The step of generating the freeze protection logic of the air conditioner in the cooling mode according to the indoor relative humidity and the temperature of the coil, and executing the freeze protection logic specifically comprises: in a case where the indoor relative humidity is greater than or equal to a first setting humidity, the temperature of the coil is less than a first setting temperature and greater than or equal to a second setting temperature, controlling the air conditioner to execute the freeze protection operation after a first setting time length.

4. The anti-freezing control method of the air conditioner according to claim 3, characterized by, The step of generating the freeze protection logic of the air conditioner in the cooling mode according to the indoor relative humidity and the temperature of the coil, and executing the freeze protection logic specifically comprises: in a case where the indoor relative humidity is greater than or equal to the first setting humidity, the temperature of the coil is less than the second setting temperature, controlling the air conditioner to execute the freeze protection operation after a second setting time length; wherein the first setting time length is greater than the second setting time length.

5. The anti-freezing control method of the air conditioner according to claim 3, characterized by, The step of generating the freeze protection logic of the air conditioner in the cooling mode according to the indoor relative humidity and the temperature of the coil, and executing the freeze protection logic specifically comprises: in a case where the indoor relative humidity is less than the first setting humidity and greater than or equal to a second setting humidity, the temperature of the coil is less than the first setting temperature and greater than or equal to the second setting temperature, controlling the air conditioner to execute the freeze protection operation after a third setting time length; wherein the third setting time length is greater than the first setting time length.

6. The anti-freezing control method of the air conditioner according to claim 4, characterized by, The step of generating the freeze protection logic of the air conditioner in the cooling mode according to the indoor relative humidity and the temperature of the coil, and executing the freeze protection logic specifically comprises: in a case where the indoor relative humidity is less than the first setting humidity and greater than or equal to the second setting humidity, the temperature of the coil is less than the second setting temperature, controlling the air conditioner to execute the freeze protection operation after a fourth setting time length; wherein the fourth setting time length is greater than the second setting time length and less than the first setting time length.

7. The anti-freezing control method of the air conditioner according to claim 5, characterized by, The step of generating the freeze protection logic of the air conditioner in the cooling mode according to the indoor relative humidity and the temperature of the coil, and executing the freeze protection logic specifically comprises: in a case where the indoor relative humidity is less than the second setting humidity and greater than or equal to a third setting humidity, the temperature of the coil is less than the first setting temperature and greater than or equal to the second setting temperature, controlling the air conditioner to execute the freeze protection operation after a fifth setting time length; The fifth set time length is greater than the third set time length.

8. The anti-freezing control method of the air conditioner according to claim 6, characterized by, The step of generating the freeze protection logic of the air conditioner in the cooling mode according to the indoor relative humidity and the coil temperature and executing the freeze protection logic specifically comprises: In a case where the indoor relative humidity is less than a second set humidity and greater than or equal to a third set humidity and the coil temperature is less than a second set temperature, the air conditioner is controlled to execute the freeze protection operation after a sixth set time length; The sixth set time length is greater than the fourth set time length and less than or equal to the first set time length.

9. The anti-freezing control method of the air conditioner according to claim 7, characterized by, The step of generating the freeze protection logic of the air conditioner in the cooling mode according to the indoor relative humidity and the coil temperature and executing the freeze protection logic specifically comprises: In a case where the indoor relative humidity is less than a third set humidity, the coil temperature is less than a first set temperature and greater than or equal to a second set temperature, the air conditioner is controlled to execute the freeze protection operation after a seventh set time length; The seventh set time length is greater than the fifth set time length. 10.The defrosting control method of an air conditioner according to claim 8, characterized by, The step of generating the freeze protection logic of the air conditioner in the cooling mode according to the indoor relative humidity and the coil temperature and executing the freeze protection logic specifically comprises: In a case where the indoor relative humidity is less than a third set humidity and the coil temperature is less than a second set temperature, the air conditioner is controlled to execute the freeze protection operation after an eighth set time length; The eighth set time length is greater than the sixth set time length and the first set time length.

11. The anti-freezing control method of an air conditioner according to any one of claims 1 to 10, characterized by, After the step of generating the freeze protection logic of the air conditioner in the cooling mode according to the indoor relative humidity and the coil temperature and executing the freeze protection logic, the method further comprises: If the coil temperature is greater than or equal to a third set temperature, the freeze protection operation is ended and the cooling mode is continued to run.

12. A freeze prevention control apparatus of an air conditioner, characterized by comprising: The method comprises: An acquisition module is configured to determine that the air conditioner is started and stably runs in a cooling mode, acquire an indoor relative humidity and a coil temperature of an indoor heat exchanger, and generate a freeze protection logic of the air conditioner in the cooling mode according to the indoor relative humidity and the coil temperature. A control module is configured to execute the freeze protection logic.

13. An air conditioner comprising a memory, a processor, and a computer program stored on the memory and executable on the processor, characterized in that, The processor executes the program to implement the freeze protection control method of the air conditioner according to any one of claims 1 to 11.

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