Air conditioner heating control method and device, air conditioner and computer readable storage medium

Abstract

The embodiment of the invention provides an air conditioner heating control method and device, an air conditioner and a computer readable storage medium. The air conditioner heating control method comprises the steps that whether the defrosting period of the air conditioner is smaller than a preset period or not is determined; in response to the fact that the defrosting period of the air conditioner is smaller than a preset period, whether the heating operation time of the air conditioner is larger than or equal to an operation time threshold value or not and whether the refrigerant inlet temperature of an outdoor heat exchanger is smaller than an inlet refrigerant temperature threshold value or not are determined, and the operation time threshold value is smaller than the defrosting period; and in response to the fact that the heating operation time of the air conditioner is larger than or equal to the operation time threshold value and the refrigerant inlet temperature of the outdoor heat exchanger is smaller than the inlet refrigerant temperature threshold value, an outdoor fan is controlled to accelerate.

Description

Technical Field

[0001] This application relates to the field of air conditioner technology, specifically to an air conditioner heating control method, device, air conditioner, and computer-readable storage medium. Background Technology

[0002] When an air conditioner is heating in low-temperature environments, the outdoor heat exchanger is prone to frost buildup, significantly reducing its heating performance. To eliminate the interference of frost on the outdoor heat exchanger, the air conditioner needs to be switched to defrost mode promptly to remove the frost. However, current heating control methods often lead to frequent defrosting, causing significant fluctuations in indoor temperature and severely impacting the heating comfort of users. Summary of the Invention

[0003] This application provides an air conditioner heating control method, device, air conditioner, and computer-readable storage medium, which can avoid frequent defrosting of the air conditioner, reduce indoor temperature fluctuations, and greatly improve the heating comfort of indoor users.

[0004] In a first aspect, embodiments of this application provide a heating control method for an air conditioner, comprising: determining whether the defrosting cycle of the air conditioner is less than a preset cycle; in response to determining that the defrosting cycle of the air conditioner is less than the preset cycle, determining whether the heating operation time of the air conditioner is greater than or equal to an operation time threshold and whether the refrigerant inlet temperature of the outdoor heat exchanger is less than an inlet refrigerant temperature threshold, wherein the operation time threshold is less than the defrosting cycle; and in response to determining that the heating operation time of the air conditioner is greater than or equal to the operation time threshold and the refrigerant inlet temperature of the outdoor heat exchanger is less than the inlet refrigerant temperature threshold, controlling the outdoor fan to accelerate.

[0005] In some embodiments, after controlling the outdoor fan to accelerate, the air conditioner heating control method further includes: determining whether the indoor heat exchanger temperature is less than the inner plate temperature threshold; and controlling the indoor fan to decelerate in response to the indoor heat exchanger temperature being less than the inner plate temperature threshold.

[0006] In some embodiments, controlling the indoor fan to decelerate includes: determining the speed reduction rate of the indoor fan based on the number of defrost cycles after the air conditioner starts heating, wherein the speed reduction rate of the indoor fan is positively correlated with the number of defrost cycles; and controlling the indoor fan to decelerate according to the speed reduction rate.

[0007] In some embodiments, before determining whether the heating operation time of the air conditioner is greater than or equal to an operation time threshold, the air conditioner heating control method further includes: determining the operation time threshold based on the outdoor ambient temperature.

[0008] In some embodiments, the air conditioner heating control method further includes: determining whether the outdoor ambient temperature is lower than an outdoor temperature threshold; in response to determining that the outdoor ambient temperature is lower than the outdoor temperature threshold, determining whether the duration when the refrigerant inlet temperature of the outdoor heat exchanger is lower than the frosting danger temperature is greater than or equal to a duration threshold; and in response to determining that the duration when the refrigerant inlet temperature of the outdoor heat exchanger is lower than the frosting danger temperature is greater than or equal to the duration threshold, controlling the air conditioner to defrost.

[0009] In some embodiments, the air conditioner heating control method further includes: determining whether the outdoor ambient temperature is lower than an outdoor temperature threshold and whether the indoor ambient temperature is lower than an indoor temperature threshold; in response to determining that the outdoor ambient temperature is lower than the outdoor temperature threshold and the indoor ambient temperature is lower than the indoor temperature threshold, determining whether the duration when the refrigerant inlet temperature of the outdoor heat exchanger is lower than the frosting danger temperature is greater than or equal to a duration threshold; and in response to determining that the duration when the refrigerant inlet temperature of the outdoor heat exchanger is lower than the frosting danger temperature is greater than or equal to the duration threshold, controlling the air conditioner to defrost.

[0010] In some embodiments, after controlling the air conditioner to defrost, the air conditioner heating control method includes: determining the number of defrost cycles after the air conditioner starts heating; in response to determining that the number of defrost cycles after the air conditioner starts heating is one, using the heating operation time of the air conditioner from the start of heating to the end of the first defrost as the defrost cycle; in response to determining that the number of defrost cycles after the air conditioner starts heating is greater than or equal to two, using the heating operation time of the air conditioner from the end of the previous defrost cycle to the end of the current defrost cycle as the defrost cycle.

[0011] In some embodiments, controlling the outdoor fan to accelerate includes: determining the speed acceleration rate of the outdoor fan based on the number of defrost cycles after the air conditioner starts heating, wherein the speed acceleration rate of the outdoor fan is positively correlated with the number of defrost cycles; and controlling the outdoor fan to accelerate according to the speed acceleration rate.

[0012] Secondly, embodiments of this application provide an air conditioner heating control device, comprising: a first comparison circuit configured to determine whether the defrosting cycle of the air conditioner is less than a preset cycle; a second comparison circuit configured to, in response to determining that the defrosting cycle of the air conditioner is less than the preset cycle, determine whether the heating operation time of the air conditioner is greater than or equal to an operation time threshold and whether the refrigerant inlet temperature of the outdoor heat exchanger is less than an inlet refrigerant temperature threshold, wherein the operation time threshold is less than the defrosting cycle; and an outdoor fan speed adjustment circuit configured to, in response to determining that the heating operation time of the air conditioner is greater than or equal to the operation time threshold and the refrigerant inlet temperature of the outdoor heat exchanger is less than the inlet refrigerant temperature threshold, control the outdoor fan to accelerate.

[0013] Thirdly, embodiments of this application provide an air conditioner, including: an outdoor heat exchanger; an outdoor fan; a memory storing a computer program; and a processor, wherein the computer program, when executed by the processor, implements the air conditioner heating control method as described in any of the above embodiments.

[0014] Fourthly, embodiments of this application provide a computer-readable storage medium having a computer program stored thereon, the computer program being loaded by a processor to execute the steps in the air conditioner heating control method described above.

[0015] The air conditioner heating control method provided in this application embodiment can, when the defrosting cycle is less than a preset cycle, after the air conditioner resumes heating operation to the operating time threshold but before reaching the defrosting cycle, further determine whether the refrigerant inlet temperature of the outdoor heat exchanger is less than the inlet refrigerant temperature threshold. If the refrigerant inlet temperature of the outdoor heat exchanger is less than the inlet refrigerant temperature threshold, control the outdoor fan to accelerate, reduce the frosting speed of the outdoor heat exchanger and delay the frosting process of the outdoor heat exchanger, thereby extending the heating operation time of the air conditioner between two defrosting actions and the defrosting cycle of the air conditioner, avoiding frequent defrosting of the air conditioner, thereby reducing indoor temperature fluctuations and greatly improving the heating comfort of indoor users. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a flowchart of an air conditioner heating control method provided in some embodiments of this application;

[0018] Figure 2 This is a partial flowchart of an air conditioner heating control method provided in some embodiments of this application;

[0019] Figure 3 This is another partial flowchart of an air conditioner heating control method provided in some embodiments of this application;

[0020] Figure 4 This is another partial flowchart of an air conditioner heating control method provided in some embodiments of this application;

[0021] Figure 5 This is another partial flowchart of an air conditioner heating control method provided in some embodiments of this application;

[0022] Figure 6This is another partial flowchart of an air conditioner heating control method provided in some embodiments of this application;

[0023] Figure 7 This is another partial flowchart of an air conditioner heating control method provided in some embodiments of this application;

[0024] Figure 8 This is a structural diagram of an air conditioner provided in some embodiments of this application.

[0025] Description of main component symbols:

[0026] 1-Air conditioner, 10-Processor, 20-Memory. Detailed Implementation

[0027] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0028] In the description of this application, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of the stated features. In the description of this application, "a plurality of" means two or more, unless otherwise explicitly specified.

[0029] "A and / or B" includes the following three combinations: A only, B only, and a combination of A and B.

[0030] The use of "applies to" or "configured to" in this application implies open and inclusive language, which does not exclude the applicability to or configuration to devices performing additional tasks or steps. Additionally, the use of "based on" implies openness and inclusivity, because processes, steps, calculations, or other actions "based on" one or more of the stated conditions or values ​​may in practice be based on additional conditions or values ​​beyond those stated.

[0031] In this application, the term "exemplary" is used to mean "used as an example, illustration, or description." Any embodiment described as "exemplary" in this application is not necessarily to be construed as being more preferred or advantageous than other embodiments. The following description is provided to enable any person skilled in the art to make and use this application. Details are set forth in the following description for purposes of explanation. It should be understood that those skilled in the art will recognize that this application can be made without using these specific details. In other instances, well-known structures and processes are not described in detail to avoid obscuring the description of this application with unnecessary detail. Therefore, this application is not intended to be limited to the embodiments shown, but is consistent with the broadest scope of the principles and features disclosed in this application.

[0032] like Figure 1 As shown, in a first aspect, this application provides an air conditioner heating control method for controlling the air conditioner 1 to heat and defrost during the heating process. The air conditioner heating control method includes S10 to S30, which can avoid frequent defrosting of the air conditioner 1, reduce fluctuations in indoor temperature, and greatly improve the heating comfort of indoor users.

[0033] S10: Determine whether the defrosting cycle of air conditioner 1 is less than the preset cycle.

[0034] Here, the defrost cycle can be updated based on the number of defrost cycles performed by air conditioner 1. After air conditioner 1 completes its first defrost cycle since starting heating, the defrost cycle can be the heating operation time from the start of heating to the first time it enters defrost mode. Starting heating means that air conditioner 1 receives a heating command and begins to enter heating mode. After air conditioner 1 completes at least two defrost cycles since starting heating, the defrost cycle can be the heating operation time from the end of the penultimate heating cycle to the first time it enters the most recent heating cycle, that is, the time interval between the start times of two adjacent defrost actions. The length of the defrost cycle reflects the frequency of defrosting by air conditioner 1. If the defrost cycle is long, it means that the outdoor heat exchanger frosts slowly, and air conditioner 1 can defrost after a longer period of heating operation, resulting in a lower defrost frequency. If the defrost cycle is short, it means that the outdoor heat exchanger frosts quickly, and air conditioner 1 needs to defrost after a shorter period of heating operation, resulting in a higher defrost frequency.

[0035] Here, the preset cycle can be pre-set in the control system of air conditioner 1. It can be the designed defrosting cycle / expected defrosting cycle of air conditioner 1, used to determine the defrosting frequency of air conditioner 1. When the defrosting cycle of air conditioner 1 is less than the preset cycle, it means that air conditioner 1 needs to defrost after a short period of heating operation, and the defrosting frequency is high and frequent. When the defrosting cycle of air conditioner 1 is greater than or equal to the preset cycle, it means that air conditioner 1 can defrost after a longer period of heating operation, and the defrosting frequency is low.

[0036] The preset cycle can be determined based on the design specifications of the air conditioner 1, or based on the experimental test data / historical operating data of the air conditioner 1. In some embodiments, the preset cycle can be determined based on the outdoor ambient temperature. In some examples, the correspondence between the outdoor ambient temperature and the preset cycle can be predetermined based on the experimental test data and / or historical operating data of the air conditioner 1, and this correspondence can be set in the control system of the air conditioner 1; during actual operation, the outdoor ambient temperature can be acquired in real time, and then the preset cycle corresponding to the outdoor ambient temperature can be determined based on the above-mentioned correspondence. In some examples, the preset cycle and the outdoor ambient temperature are positively correlated; in other words, the preset cycle increases with the increase of the outdoor ambient temperature and decreases with the decrease of the outdoor ambient temperature.

[0037] For example, preset cycle values ​​for air conditioner 1 under different outdoor ambient temperatures can be predetermined. These may include preset cycle values ​​for outdoor ambient temperatures of -5℃ to 0℃, -10℃ to -5℃, -15℃ to -10℃, and below -15℃, and are stored in the control system of air conditioner 1. During the actual operation of air conditioner 1, the corresponding preset cycle can be determined based on the real-time outdoor ambient temperature data. For example, the corresponding preset cycle can be determined based on the temperature range of the outdoor ambient temperature (such as -5℃ to 0℃, -10℃ to -5℃, -15℃ to -10℃, below -15℃, etc.).

[0038] S20: In response to determining that the defrosting cycle of air conditioner 1 is less than the preset cycle, determine whether the heating operation time of air conditioner 1 is greater than or equal to the operation time threshold and whether the refrigerant inlet temperature of the outdoor heat exchanger is less than the inlet refrigerant temperature threshold, wherein the operation time threshold is less than the defrosting cycle.

[0039] The heating operation time of air conditioner 1 refers to the length of time from the end of the most recent defrosting cycle until the current moment when air conditioner 1 resumes heating. If it is determined that the defrosting cycle of air conditioner 1 is less than the preset cycle, it can be concluded that the outdoor heat exchanger is frosting rapidly under the current operating conditions, and air conditioner 1 is defrosting frequently under these conditions. At this point, after air conditioner 1 resumes heating operation to the operating time threshold but before reaching the defrosting cycle, it can be further determined whether the refrigerant inlet temperature of the outdoor heat exchanger is lower than the inlet refrigerant temperature threshold to determine the frosting progress of the outdoor heat exchanger and the urgency of defrosting for air conditioner 1.

[0040] S30: In response to determining that the heating operation time of air conditioner 1 is greater than or equal to the operation time threshold and the refrigerant inlet temperature of the outdoor heat exchanger is less than the inlet refrigerant temperature threshold, the outdoor fan is accelerated.

[0041] If, after air conditioner 1 resumes heating operation to the operating time threshold but before reaching the defrost cycle, the refrigerant inlet temperature of the outdoor heat exchanger is lower than the inlet refrigerant temperature threshold, it can be determined that the frosting process of the outdoor heat exchanger is relatively fast and the defrosting urgency of air conditioner 1 is high. At this time, the outdoor fan can be controlled to rotate faster, increasing the airflow speed and heat exchange efficiency at the outdoor heat exchanger, reducing the frosting speed and delaying the frosting process of the outdoor heat exchanger, thereby extending the heating operation time of air conditioner 1 between two defrosting actions and the defrost cycle of air conditioner 1, avoiding frequent defrosting of air conditioner 1 and the resulting indoor temperature fluctuations.

[0042] Compared with related technologies, the air conditioner heating control method provided in this application embodiment can, when the defrosting cycle is less than the preset cycle, after the air conditioner 1 has resumed heating operation to the operating time threshold but before the defrosting cycle is reached, further determine whether the refrigerant inlet temperature of the outdoor heat exchanger is less than the inlet refrigerant temperature threshold. When the refrigerant inlet temperature of the outdoor heat exchanger is less than the inlet refrigerant temperature threshold, control the outdoor fan to accelerate, reduce the frosting speed of the outdoor heat exchanger and delay the frosting process of the outdoor heat exchanger, thereby extending the heating operation time of the air conditioner 1 between two defrosting actions and the defrosting cycle of the air conditioner 1, avoiding frequent defrosting of the air conditioner 1, thereby reducing indoor temperature fluctuations and greatly improving the heating comfort of indoor users.

[0043] like Figure 2 As shown, in some embodiments, after S30, the air conditioner heating control method may further include S40 to S50.

[0044] S40: Determine whether the indoor heat exchanger temperature is lower than the inner plate temperature threshold.

[0045] The inner plate temperature threshold is used to determine the temperature level of the indoor heat exchanger and can serve as an indicator of its heat exchange performance in heating indoor air. When the indoor heat exchanger temperature is greater than or equal to the inner plate temperature threshold, the heat exchanger has high heat exchange performance, can efficiently heat indoor air, and can simultaneously heat a large volume of indoor return air. Conversely, when the indoor heat exchanger temperature is greater than or equal to the inner plate temperature threshold, the heat exchanger has low heat exchange performance, low efficiency and capacity in heating indoor air, and can simultaneously heat a small volume of indoor return air. The specific value of the inner plate temperature threshold can be determined according to actual needs, and this application does not limit it in this embodiment.

[0046] S50: In response to the indoor heat exchanger temperature being lower than the inner plate temperature threshold, control the indoor fan to slow down.

[0047] When the indoor heat exchanger temperature is lower than the inner plate temperature threshold, the heat exchange performance of the indoor heat exchanger is low, resulting in low efficiency and capacity for heating the indoor air. At this time, the indoor fan can be slowed down to reduce the indoor return air volume to better match the heat exchange performance of the indoor heat exchanger. This allows the indoor return air to be fully heated by the indoor fan before being blown out, preventing significant fluctuations in the indoor supply air temperature and thus reducing indoor temperature fluctuations, improving the heating comfort of indoor users. Furthermore, it reduces the heat supplied by the indoor heat exchanger to the indoor return air, preventing further temperature drops and allowing the indoor heat exchanger temperature to gradually rise above or equal to the inner plate temperature threshold, gradually improving the heat exchange performance of the indoor heat exchanger and the indoor supply air temperature, thereby improving the heating comfort of indoor users. Thirdly, it reduces the indoor heating demand and the heat exchange load of the outdoor heat exchanger, thereby reducing the frosting speed and delaying the frosting process of the outdoor heat exchanger, extending the heating operation time between two defrosting cycles of the air conditioner 1, and extending the defrosting cycle of the air conditioner 1, thus avoiding frequent defrosting of the air conditioner 1 and the resulting indoor temperature fluctuations.

[0048] By setting S40 to S50, the indoor fan speed can be controlled according to the indoor heat exchanger temperature when or after intervening in the outdoor fan speed, further reducing indoor temperature fluctuations and improving the heating comfort of indoor users.

[0049] like Figure 3 As shown, in some examples, S50 may include S51 to S52.

[0050] S51: Determine the speed reduction rate of the indoor fan based on the number of defrost cycles after the air conditioner 1 starts heating. The speed reduction rate of the indoor fan is positively correlated with the number of defrost cycles.

[0051] Here, the number of defrost cycles for air conditioner 1 after starting heating refers to the number of defrost cycles that have occurred from the time air conditioner 1 receives the heating command and enters heating mode until the current moment. Here, the indoor fan speed reduction rate refers to the amount of decrease in the indoor fan speed per unit time. The fewer the number of defrost cycles, the smaller the indoor fan speed reduction rate; the more the number of defrost cycles, the greater the indoor fan speed reduction rate. For example, if the indoor fan is controlled at k after the nth defrost cycle... n The speed reduction rate decreases, and after the (n+1)th defrost, the indoor fan is controlled according to k. n+1 If the speed reduction rate decreases, then k n+1 Greater than k n .

[0052] S52: Controls the indoor fan to decelerate according to the speed reduction rate.

[0053] By setting S51 to S52, the speed reduction rate of the indoor fan can be gradually increased as the number of defrosting cycles increases; that is, the amount by which the indoor fan speed decreases per unit time. Thus, if controlling the indoor fan to decelerate during the previous defrosting cycle fails to extend the defrosting cycle of air conditioner 1 to a level greater than or equal to the preset cycle, then in the next defrosting cycle, the indoor fan can be controlled to accelerate the deceleration process in order to further extend the defrosting cycle of air conditioner 1. This accelerated deceleration action is repeated until the defrosting cycle of air conditioner 1 is greater than or equal to the preset cycle.

[0054] In some embodiments, before S20 "determining whether the heating operation time of the air conditioner 1 is greater than or equal to the operation time threshold", the air conditioner heating control method may further include S201.

[0055] S201: Determine the operating time threshold based on the outdoor ambient temperature.

[0056] Here, the correspondence between outdoor ambient temperature and operating time threshold can be pre-determined based on experimental test data and / or historical operating data of air conditioner 1, and this correspondence can be set in the control system of air conditioner 1. During actual operation, the outdoor ambient temperature can be acquired in real time, and the corresponding operating time threshold can be determined based on the aforementioned correspondence. For example, the operating time threshold and the outdoor ambient temperature are positively correlated; in other words, the operating time threshold increases with increasing outdoor ambient temperature and decreases with decreasing outdoor ambient temperature.

[0057] like Figure 4 As shown, in some embodiments, the air conditioner heating control method may further include S101 to S103.

[0058] S101: Determine whether the outdoor ambient temperature is lower than the outdoor temperature threshold.

[0059] The outdoor temperature threshold is used to determine the level of the outdoor ambient temperature, reflecting the severity of the current outdoor environment and the risk of frost formation on the outdoor heat exchanger. The value of the outdoor temperature threshold can be determined according to actual needs, and this application embodiment does not limit it.

[0060] S102: In response to determining that the outdoor ambient temperature is less than the outdoor temperature threshold, determine whether the duration when the refrigerant inlet temperature of the outdoor heat exchanger is less than the frosting danger temperature is greater than or equal to the duration threshold.

[0061] When the outdoor ambient temperature is determined to be lower than the outdoor temperature threshold, it can be determined that the outdoor heat exchanger is at risk of frosting when the air conditioner 1 is operating in heating mode in the current outdoor environment. At this time, it can be determined whether the duration for which the refrigerant inlet temperature of the outdoor heat exchanger is lower than the frosting danger temperature is greater than or equal to the duration threshold, in order to determine whether the operation of the outdoor heat exchanger has been significantly affected by the frost layer, and thus determine whether defrosting of the outdoor heat exchanger is necessary. Here, the specific values ​​of the frosting danger temperature and the duration threshold can be determined according to actual needs, and this application embodiment does not limit them; the duration of this state can be calculated after the refrigerant inlet temperature of the outdoor heat exchanger is lower than the frosting danger temperature.

[0062] S103: In response to the determination that the duration when the refrigerant inlet temperature of the outdoor heat exchanger is less than the frosting danger temperature is greater than or equal to the duration threshold, the air conditioner 1 is controlled to defrost.

[0063] When it is determined that the outdoor heat exchanger is in a frosting danger state where the refrigerant inlet temperature is below the frosting danger temperature, and the duration of this frosting danger state is greater than or equal to the duration threshold, it indicates that the frosting degree of the outdoor heat exchanger is relatively severe, and the heat exchange performance of the outdoor heat exchanger has significantly decreased, making effective heat exchange impossible. At this time, it is necessary to control air conditioner 1 to defrost in order to remove the frost layer on the surface of the outdoor heat exchanger.

[0064] like Figure 5 As shown, in some other embodiments, the air conditioner heating control method may further include S101' to S103.

[0065] S101': Determine whether the outdoor ambient temperature is lower than the outdoor temperature threshold and whether the indoor ambient temperature is lower than the indoor temperature threshold.

[0066] The indoor temperature threshold is used to determine the level of indoor ambient temperature, reflecting the current indoor heating demand and the risk of frosting on the outdoor heat exchanger. If the indoor ambient temperature is lower than the indoor temperature threshold, the current indoor environment is cold and the heating demand is high. In this case, if the outdoor ambient temperature is low, the outdoor heat exchanger will face a greater risk of frosting due to the harsh outdoor environment and high heat exchange load.

[0067] S102': In response to determining that the outdoor ambient temperature is less than the outdoor temperature threshold and the indoor ambient temperature is less than the indoor temperature threshold, determine whether the duration when the refrigerant inlet temperature of the outdoor heat exchanger is less than the frosting danger temperature is greater than or equal to the duration threshold.

[0068] When both the outdoor ambient temperature and the indoor ambient temperature are below the outdoor temperature threshold, it can be determined that the outdoor environment is relatively harsh, the heat exchange load of the outdoor heat exchanger is high, and the outdoor heat exchanger faces a significant risk of frosting. In this case, it is further necessary to determine whether the duration for which the refrigerant inlet temperature of the outdoor heat exchanger is below the frosting danger temperature is greater than or equal to the duration threshold. This helps determine whether the operation of the outdoor heat exchanger has been significantly affected by frost, and thus whether defrosting of the outdoor heat exchanger is necessary.

[0069] S103: In response to the determination that the duration when the refrigerant inlet temperature of the outdoor heat exchanger is less than the frosting danger temperature is greater than or equal to the duration threshold, the air conditioner 1 is controlled to defrost.

[0070] like Figure 6 As shown, in some examples, after S103, the air conditioner heating control method may include S1041 to S1043.

[0071] S1041: Determine the number of defrost cycles for air conditioner 1 after it starts heating.

[0072] S1042: In response to determining that the number of defrost cycles of the air conditioner 1 after starting heating is one, the heating operation time of the air conditioner 1 from the start of heating to the first defrost is taken as the defrost cycle.

[0073] S1043: In response to determining that the number of defrost cycles of air conditioner 1 after starting heating is greater than or equal to two, the defrost cycle is defined as the heating operation time of air conditioner 1 from the end of the previous defrost cycle to the end of the current defrost cycle.

[0074] like Figure 7 As shown, in some embodiments, S30 may include S31 to S32.

[0075] S31: Determine the speed acceleration rate of the outdoor fan based on the number of defrost cycles after the air conditioner 1 starts heating. The speed acceleration rate of the outdoor fan is positively correlated with the number of defrost cycles.

[0076] Here, the outdoor fan speed acceleration rate refers to the increase in the outdoor fan speed per unit time. The fewer the defrosting cycles, the smaller the outdoor fan speed acceleration rate; the more the defrosting cycles, the greater the outdoor fan speed acceleration rate. For example, if the outdoor fan is controlled to speed up to s after the nth defrost cycle... n The rotational speed increases, and after the (n+1)th defrost, the outdoor fan is controlled to press s.n+1 If the rotational speed acceleration rate increases, then s n+1 Greater than s n .

[0077] S32: Controls the outdoor fan to accelerate according to the speed acceleration rate.

[0078] By setting S51 to S52, the speed acceleration rate of the outdoor fan can be gradually increased as the number of defrosting cycles increases; that is, the increase in the speed of the outdoor fan per unit time. Thus, if accelerating the outdoor fan in the previous defrosting cycle fails to extend the defrosting cycle of air conditioner 1 to a level greater than or equal to the preset cycle, the outdoor fan can be accelerated in the next defrosting cycle to further extend the defrosting cycle of air conditioner 1. This acceleration process is repeated until the defrosting cycle of air conditioner 1 is greater than or equal to the preset cycle.

[0079] Secondly, embodiments of this application provide an air conditioner heating control device, comprising: a first comparison circuit configured to determine whether the defrosting cycle of the air conditioner 1 is less than a preset cycle; a second comparison circuit configured to, in response to determining that the defrosting cycle of the air conditioner 1 is less than the preset cycle, determine whether the heating operation time of the air conditioner 1 is greater than or equal to an operation time threshold and whether the refrigerant inlet temperature of the outdoor heat exchanger is less than an inlet refrigerant temperature threshold, wherein the operation time threshold is less than the defrosting cycle; and an outdoor fan speed adjustment circuit configured to, in response to determining that the heating operation time of the air conditioner 1 is greater than or equal to the operation time threshold and the refrigerant inlet temperature of the outdoor heat exchanger is less than the inlet refrigerant temperature threshold, control the outdoor fan to accelerate.

[0080] like Figure 8 As shown, in a third aspect, embodiments of this application provide an air conditioner 1, which includes an outdoor heat exchanger, an outdoor fan, a processor 10, and a memory 20. The memory 20 stores a computer program, which, when executed by the processor 10, implements the air conditioner heating control method as described in any of the above embodiments. The type of air conditioner 1 can be determined according to actual needs, and can be, for example, a wall-mounted air conditioner, a cabinet air conditioner, a window air conditioner, a ceiling-mounted air conditioner, etc., and embodiments of this application do not limit this.

[0081] Processor 10 is connected to memory 20 and can perform various actions and processes according to the program stored in memory 20. Specifically, processor 10 can be an integrated circuit chip with signal processing capabilities. The processor 10 can be a general-purpose processor, digital signal processor (DSP), application-specific integrated circuit (ASIC), off-the-shelf programmable gate array (FPGA), or other programmable logic device, discrete gate or transistor logic device, or discrete hardware component, and can implement or execute the methods, steps, and logic block diagrams disclosed in the embodiments of this application. The general-purpose processor can be a microprocessor or any conventional processor, and can be based on x86 architecture or ARM architecture.

[0082] Memory 20 may be volatile or non-volatile, or may include both. Non-volatile memory may be read-only memory (ROM), programmable read-only memory (PROM), erasable programmable read-only memory (EPROM), electrically erasable programmable read-only memory (EEPROM), or flash memory. Volatile memory may be random access memory (RAM) used as an external cache. By way of example, but not limitation, many forms of RAM are available, such as static random access memory (SRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (SDRAM), double data rate synchronous dynamic random access memory (DDRSDRAM), enhanced synchronous dynamic random access memory (ESDRAM), synchronous linked dynamic random access memory (SLDRAM), and direct memory bus random access memory (DRRAM). It should be noted that memory 20 of the methods described herein is intended to include, but is not limited to, these and any other suitable types of memory.

[0083] Fourthly, embodiments of this application provide a computer-readable storage medium having a computer program stored thereon, the computer program being loaded by a processor 10 to execute the steps in the control method of any of the above embodiments.

[0084] For example, the aforementioned computer-readable storage media may include, but are not limited to: magnetic storage devices (e.g., hard disks, floppy disks, or magnetic tapes), optical discs (e.g., CDs (Compact Disks), DVDs (Digital Versatile Disks), etc.), smart cards, and flash memory devices (e.g., EPROMs (Erasable Programmable Read-Only Memory), cards, sticks, or key drives, etc.). The various computer-readable storage media described in the embodiments of this application may represent one or more devices and / or other machine-readable storage media for storing information. The term "machine-readable storage medium" may include, but is not limited to, wireless channels and various other media capable of storing, containing, and / or carrying instructions and / or data.

[0085] The above provides a detailed description of an air conditioner heating control method, apparatus, air conditioner, and computer-readable storage medium provided in the embodiments of this application. Specific examples have been used to illustrate the principles and implementation methods of this application. The descriptions of the above embodiments are only for the purpose of helping to understand the method and core ideas of this application. 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 this application. Therefore, the content of this specification should not be construed as a limitation of this application.

Claims

1. A heating control method for an air conditioner, characterized in that, include: Determine if the defrosting cycle of the air conditioner is less than the preset cycle; In response to determining that the defrosting cycle of the air conditioner is less than a preset cycle, it is determined whether the heating operation time of the air conditioner is greater than or equal to an operation time threshold and whether the refrigerant inlet temperature of the outdoor heat exchanger is less than an inlet refrigerant temperature threshold, wherein the operation time threshold is less than the defrosting cycle. In response to determining that the heating operation time of the air conditioner is greater than or equal to the operation time threshold and the refrigerant inlet temperature of the outdoor heat exchanger is less than the inlet refrigerant temperature threshold, the outdoor fan is controlled to accelerate.

2. The air conditioner heating control method according to claim 1, characterized in that, After controlling the outdoor fan to accelerate, the air conditioner heating control method further includes: Determine if the indoor heat exchanger temperature is lower than the inner plate temperature threshold. In response to the indoor heat exchanger temperature being lower than the inner plate temperature threshold, the indoor fan is controlled to slow down.

3. The air conditioner heating control method according to claim 2, characterized in that, Controlling the indoor fan speed reduction includes: The deceleration rate of the indoor fan is determined based on the number of defrost cycles after the air conditioner starts heating. The deceleration rate of the indoor fan is positively correlated with the number of defrost cycles. The indoor fan is controlled to decelerate according to the specified speed reduction rate.

4. The air conditioner heating control method according to claim 1, characterized in that, Before determining whether the heating operation time of the air conditioner is greater than or equal to the operation time threshold, the air conditioner heating control method further includes: The operating time threshold is determined based on the outdoor ambient temperature.

5. The air conditioner heating control method according to claim 1, characterized in that, The air conditioner heating control method also includes: Determine whether the outdoor ambient temperature is lower than the outdoor temperature threshold. In response to determining that the outdoor ambient temperature is less than the outdoor temperature threshold, determine whether the duration when the refrigerant inlet temperature of the outdoor heat exchanger is less than the frosting danger temperature is greater than or equal to the duration threshold. In response to the determination that the duration when the refrigerant inlet temperature of the outdoor heat exchanger is lower than the frosting danger temperature is greater than or equal to a duration threshold, the air conditioner is controlled to defrost.

6. The air conditioner heating control method according to claim 1, characterized in that, The air conditioner heating control method also includes: Determine whether the outdoor ambient temperature is lower than the outdoor temperature threshold and whether the indoor ambient temperature is lower than the indoor temperature threshold. In response to determining that the outdoor ambient temperature is less than the outdoor temperature threshold and the indoor ambient temperature is less than the indoor temperature threshold, determine whether the duration when the refrigerant inlet temperature of the outdoor heat exchanger is less than the frosting danger temperature is greater than or equal to the duration threshold. In response to the determination that the duration when the refrigerant inlet temperature of the outdoor heat exchanger is lower than the frosting danger temperature is greater than or equal to a duration threshold, the air conditioner is controlled to defrost.

7. The air conditioner heating control method according to claim 5 or 6, characterized in that, After controlling the air conditioner to defrost, the air conditioner heating control method further includes: Determine the number of defrost cycles required for the air conditioner after it starts heating. In response to determining that the number of defrost cycles of the air conditioner after starting heating is one, the heating operation time of the air conditioner from the start of heating to the first defrost is taken as the defrost cycle. In response to determining that the number of defrost cycles of the air conditioner after starting heating is greater than or equal to two, the heating operation time from the end of the previous defrost cycle to the end of the current defrost cycle is taken as the defrost cycle.

8. The air conditioner heating control method according to claim 1, characterized in that, Controlling the acceleration of the outdoor fan includes: The speed acceleration rate of the outdoor fan is determined based on the number of defrost cycles after the air conditioner starts heating. The speed acceleration rate of the outdoor fan is positively correlated with the number of defrost cycles. The outdoor fan is controlled to accelerate at the specified speed acceleration rate.

9. A heating control device for an air conditioner, characterized in that, include: The first comparison circuit is configured to determine whether the defrosting cycle of the air conditioner is less than a preset cycle. The second comparison circuit is configured to, in response to determining that the defrosting cycle of the air conditioner is less than a preset cycle, determine whether the heating operation time of the air conditioner is greater than or equal to an operation time threshold and whether the refrigerant inlet temperature of the outdoor heat exchanger is less than an inlet refrigerant temperature threshold, wherein the operation time threshold is less than the defrosting cycle. The outdoor fan speed regulation circuit is configured to control the outdoor fan to accelerate in response to determining that the heating operation time of the air conditioner is greater than or equal to an operation time threshold and the refrigerant inlet temperature of the outdoor heat exchanger is less than an inlet refrigerant temperature threshold.

10. An air conditioner, characterized in that, include: Outdoor heat exchanger; Outdoor fan; Memory, which stores computer programs; A processor, wherein the computer program, when executed by the processor, implements the air conditioner heating control method as described in any one of claims 1 to 8.

11. A computer-readable storage medium, characterized in that, It stores a computer program, which is loaded by a processor to execute the steps of the air conditioner heating control method according to any one of claims 1 to 8.

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