Control method and device of air conditioner outer fan, air conditioner and medium

Abstract

This invention discloses a control method, device, air conditioner, and medium for an air conditioner's outdoor fan, relating to the field of air conditioning technology. The method includes: if the air conditioner is in heating mode, determining the fan speed of the outdoor fan based on the acquired outdoor ambient temperature, compressor frequency, and current operating cycle; adjusting the fan speed of the outdoor fan based on the outdoor ambient temperature, the current operating cycle, and the acquired external pipe temperature; detecting whether a fan speed correction condition is met based on the outdoor ambient temperature, the acquired indoor ambient temperature, the internal pipe temperature, and the fan speed of the air conditioner's indoor fan; if the fan speed correction condition is met, correcting the operating correction value corresponding to the fan speed of the outdoor fan based on the decay rate of the external pipe temperature. This invention achieves precise control of the outdoor fan's fan speed when outdoor humidity is high, slowing down the rate of condenser frosting and improving low-temperature heating efficiency.

Description

Technical Field

[0001] The embodiments of the present invention relate to the field of air conditioning technology, and in particular to a control method, device, air conditioner and medium for an air conditioner outdoor fan. Background Technology

[0002] As people's living standards continue to improve, their standards for quality of life are also rising, and air conditioners have become an indispensable household appliance. Air conditioners not only provide indoor cooling and heating but also improve indoor air quality, enhancing indoor comfort. However, in current air conditioner technology, during low-temperature heating operation, the outdoor fan speed is primarily adjusted based on the difference between the outdoor ambient temperature and the external pipe temperature. When outdoor humidity is high, the outdoor fan speed adjustment is prone to deviation, leading to faster condenser frosting and poor low-temperature heating performance, thus impacting user experience. Summary of the Invention

[0003] This invention provides a control method, device, air conditioner, and medium for an air conditioner's outdoor fan, aiming to solve the problem of poor low-temperature heating performance caused by rapid condenser frosting during existing air conditioners' low-temperature heating.

[0004] In a first aspect, embodiments of the present invention provide a control method for an air conditioner outdoor fan, comprising:

[0005] If the air conditioner is in heating mode, the windshield of the outdoor fan is determined based on the obtained outdoor ambient temperature, compressor frequency, and current operating cycle.

[0006] The windshield of the external fan is adjusted according to the outdoor ambient temperature, the current operating cycle, and the obtained external pipe temperature.

[0007] The outdoor ambient temperature, the obtained indoor ambient temperature, the inner pipe temperature, and the air conditioner's internal fan windshield are used to determine whether the windshield correction conditions are met.

[0008] If the windshield correction condition is met, the operating correction value corresponding to the windshield of the external fan is corrected according to the decay rate of the external pipe temperature.

[0009] Secondly, embodiments of the present invention also provide a control device for an air conditioner outdoor fan, comprising:

[0010] The acquisition and determination unit is used to determine the windshield of the outdoor fan based on the acquired outdoor ambient temperature, compressor frequency and current operating cycle if the air conditioner is in heating mode.

[0011] The adjustment unit is used to adjust the windshield of the external fan according to the outdoor ambient temperature, the current operating cycle, and the acquired external pipe temperature.

[0012] The detection unit is used to detect whether the windshield correction conditions are met based on the outdoor ambient temperature, the acquired indoor ambient temperature, the inner pipe temperature, and the windshield of the air conditioner's internal fan.

[0013] The correction unit is used to correct the operating correction value corresponding to the windshield of the external fan according to the decay rate of the external pipe temperature if the windshield correction condition is met.

[0014] Thirdly, embodiments of the present invention also provide an air conditioner, the air conditioner including a memory and a processor, the memory storing a computer program, and the processor executing the computer program to implement the above-described method.

[0015] Fourthly, embodiments of the present invention also provide a computer-readable storage medium storing a computer program that, when executed by a processor, can implement the above-described method.

[0016] This invention provides a control method, device, air conditioner, and medium for an air conditioner's outdoor fan. The method includes: if the air conditioner is in heating mode, determining the fan speed of the outdoor fan based on the acquired outdoor ambient temperature, compressor frequency, and current operating cycle; adjusting the fan speed of the outdoor fan based on the outdoor ambient temperature, the current operating cycle, and the acquired external pipe temperature; detecting whether a fan speed correction condition is met based on the outdoor ambient temperature, the acquired indoor ambient temperature, the internal pipe temperature, and the fan speed of the air conditioner's indoor fan; if the fan speed correction condition is met, correcting the operating correction value corresponding to the fan speed of the outdoor fan based on the decay rate of the external pipe temperature. This technical solution, when the air conditioner is in heating mode, first determines the fan speed of the outdoor fan based on multiple parameters and adjusts it; after adjustment, if the fan speed correction condition is met, the operating correction value corresponding to the fan speed of the outdoor fan is corrected based on the decay rate of the external pipe temperature. This achieves precise control of the fan speed of the outdoor fan when outdoor humidity is high, slows down the rate of condenser frosting, and improves the low-temperature heating effect. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the following description of the embodiments will be briefly introduced. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 A flowchart illustrating a control method for an outdoor air conditioner fan provided in an embodiment of the present invention;

[0019] Figure 2A schematic diagram of a preset temperature-frequency mapping table provided in an embodiment of the present invention;

[0020] Figure 3 This is a schematic diagram of a sub-process of a control method for an air conditioner outdoor fan provided in an embodiment of the present invention;

[0021] Figure 4 This is a schematic diagram of a sub-process of a control method for an air conditioner outdoor fan provided in an embodiment of the present invention;

[0022] Figure 5 A schematic diagram of a preset correction parameter table provided in an embodiment of the present invention;

[0023] Figure 6 A schematic diagram of indoor heating capacity provided for an embodiment of the present invention;

[0024] Figure 7 A flowchart illustrating a control method for an outdoor air conditioner fan according to another embodiment of the present invention;

[0025] Figure 8 A simplified flowchart illustrating a control method for an outdoor air conditioner fan provided in an embodiment of the present invention;

[0026] Figure 9 This is a schematic block diagram of a control device for an air conditioner outdoor fan provided in an embodiment of the present invention;

[0027] Figure 10 This is a schematic block diagram of an air conditioner provided in an embodiment of the present invention. Detailed Implementation

[0028] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0029] It should be understood that, when used in this specification and the appended claims, the terms "comprising" and "including" indicate the presence of the described features, integrals, steps, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components and / or collections thereof.

[0030] It should also be understood that the terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to limit the invention. As used in this specification and the appended claims, the singular forms “a,” “an,” and “the” are intended to include the plural forms unless the context clearly indicates otherwise.

[0031] It should also be further understood that the term "and / or" as used in this specification and the appended claims refers to any combination of one or more of the associated listed items and all possible combinations, and includes such combinations.

[0032] As used in this specification and the appended claims, the term "if" may be interpreted, depending on the context, as "when," "once," "in response to determination," or "in response to detection." Similarly, the phrases "if determined" or "if [described condition or event] is detected" may be interpreted, depending on the context, as "once determined," "in response to determination," "once [described condition or event] is detected," or "in response to detection of [described condition or event]."

[0033] Please see Figure 1 , Figure 1 This is a flowchart illustrating the control method for an air conditioner outdoor fan provided in an embodiment of the present invention. The control method for the air conditioner outdoor fan will be described in detail below. Figure 1 As shown, the method includes the following steps S110-S140.

[0034] S110. If the air conditioner is in heating mode, the windshield of the outdoor fan is determined based on the obtained outdoor ambient temperature, compressor frequency, and current operating cycle.

[0035] In this embodiment of the invention, the air conditioner includes an indoor unit and an outdoor unit. The indoor unit includes an indoor fan, and the outdoor unit includes an outdoor fan. After the user turns on the air conditioner, if the air conditioner enters heating mode, the outdoor ambient temperature, compressor frequency, and current operating cycle are acquired. Based on the outdoor ambient temperature and the compressor frequency, the initial fan speed of the outdoor fan is determined using a preset temperature-frequency mapping table. A fan speed correction value is acquired based on the current operating cycle, and the sum of the initial fan speed and the fan speed correction value is calculated to obtain the fan speed of the outdoor fan. It should be noted that the operating correction value of the outdoor fan includes a fan speed correction value and a temperature correction value. For ease of understanding, it is assumed that the outdoor ambient temperature is T. 外环 The compressor frequency is F 目标 The windshield correction value is D. 修正 The windshield correction value is T. 修正 The current operating cycle is the first cycle, and the windshield of the external fan does not need to be adjusted, i.e., D. 修正 T 修正 All values ​​are 0, the air conditioner enters the open-loop stage, based on the outdoor ambient temperature T. 外环 and compressor frequency F 目标 Select the corresponding fan speed setting using the preset temperature frequency mapping table. At this time, the fan speed setting is the open-loop speed setting D. 开环 =n+D修正 Among them, the preset temperature frequency mapping table is as follows: Figure 2 As shown, in Figure 2 In the middle, the outdoor ambient temperature T 外环 Divided into 5 temperature ranges, namely T 外环 <-5°, -5°≤F 目标 <0°,0°≤F 目标 <5°, 5°≤F 目标 <10°, F 目标 ≥10°; compressor frequency F 目标 Divided into four frequency ranges, namely 90Hz≤F 目标 60Hz≤F 目标 <90Hz, 30Hz≤F 目标 <60Hz, F 目标 For frequencies below 30Hz, the outdoor fan has five speed settings: 1, 2, 3, 4, and 5. Generally, a higher speed setting results in a higher fan speed, and vice versa. For example, if the compressor frequency F... 目标 The frequency is 70Hz, and the outdoor ambient temperature is T. 外环 If the angle is 7°, then the value of n is 3, which means the open-loop windshield D. 开环 The value is 3. Determine the open-loop windshield D. 开环 Then run the open-loop time t 开环 Entering the closed-loop stage. In this embodiment, the open-loop windshield D is determined. 开环 The reason why it is necessary to run the open-loop time t afterwards 开环 It's to ensure the air conditioner runs stably.

[0036] S120. Adjust the windshield of the external fan according to the outdoor ambient temperature, the current operating cycle, and the obtained external pipe temperature.

[0037] In embodiments of the present invention, such as Figure 3As shown, step S120 includes steps S121-S125, specifically as follows: S121, obtain the temperature of the outer pipe, and calculate the absolute value of the difference between the outdoor ambient temperature and the temperature of the outer pipe to obtain the outdoor temperature difference; S122, obtain the temperature correction value according to the current operating cycle, and calculate the difference between the preset upper limit of the outdoor temperature difference and the temperature correction value to obtain the corrected upper limit of the outdoor temperature difference; S123, if the outdoor temperature difference is less than the preset lower limit of the outdoor temperature difference, lower the windshield of the outdoor fan by a preset level, and return to step S121 after a preset closed-loop operating time; S124, if the outdoor temperature difference is greater than the corrected upper limit of the outdoor temperature difference, increase the windshield of the outdoor fan by the preset level, and return to step S121 after the preset closed-loop operating time; S125, if the outdoor temperature difference is not less than the preset lower limit of the outdoor temperature difference and not greater than the corrected upper limit of the outdoor temperature difference, keep the windshield of the outdoor fan unchanged. Specifically, the windshield control of the outdoor fan enters closed-loop control. Assume the current windshield of the outdoor fan is D. 当前 The outdoor unit obtains the condenser outer tube temperature T through a temperature sensor. 外管 Calculate the outdoor ambient temperature T 外环 and outer tube temperature T 外管 The absolute value of the difference is the outdoor temperature difference (T). 温差 =|T 外环 -T 外管 |. Through T 温差 Determine the condenser load and adjust the outdoor fan speed accordingly. Through experimental testing, a preset upper limit for the outdoor temperature difference was set to T. 温差上限 The preset lower limit of the outdoor temperature difference is T. 温差下限 At this point, the temperature correction value obtained from the current operating cycle is T. 修正 The upper limit of the outdoor temperature difference is corrected to T. 温差上限 -T 修正 If T 温差 <T 温差下限 The condenser load is relatively low, so lower the outdoor fan speed to the preset level (level 1). 闭环 =D 当前 -1, running the preset closed-loop time t 闭环 Then, return to step S121 to continue judging T. 温差 The interval in which it is located. T 温差下限 ≤T 温差 ≤T 温差上限 -T 修正 The outdoor fan damper and condenser load are matched to keep the current outdoor fan damper unchanged. 闭环 =D 当前 If the current operating cycle is the first cycle after the air conditioner is turned on, then T 修正=0, if the current operating cycle is not the first cycle after the air conditioner starts running, then T is obtained based on the current operating cycle. 修正 If T 温差 >T 温差上限 -T 修正 The condenser is under heavy load, so the outdoor fan speed is increased by one level. 闭环 =D 当前 +1, run t 闭环 Return to step S121 and continue to determine T. 温差 The interval in which it is located.

[0038] S130. Based on the outdoor ambient temperature, the obtained indoor ambient temperature, the inner pipe temperature, and the windshield of the air conditioner's internal fan, check whether the windshield correction conditions are met.

[0039] In embodiments of the present invention, such as Figure 4 As shown, step S130 includes steps S131-S133, specifically as follows: S131, obtain the indoor ambient temperature, the inner pipe temperature, and the fan baffle of the inner fan, and calculate the absolute value of the difference between the inner pipe temperature and the indoor ambient temperature to obtain the indoor temperature difference; S132, if the fan baffle of the inner fan is greater than the preset lower limit of the inner fan baffle, the indoor temperature difference is greater than the preset lower limit of the indoor temperature difference, and the outdoor ambient temperature is within the preset upper and lower limits of the outdoor ambient temperature, then it is determined that the fan baffle correction condition is met; S133, if the fan baffle of the inner fan is not greater than the preset lower limit of the inner fan baffle / the indoor temperature difference is not greater than the preset lower limit of the indoor temperature difference / the outdoor ambient temperature is not within the preset upper and lower limits of the outdoor ambient temperature, then it is determined that the fan baffle correction condition is not met. Specifically, in this embodiment, when the fan baffle of the outer fan matches the load of the condenser, the correction judgment stage is entered, specifically to determine whether the following three correction conditions are met: 1. Determine whether the fan baffle of the inner fan is greater than the preset lower limit of the inner fan baffle D. 下限 2. Calculate the inner tube temperature T. 内管 and indoor ambient temperature T 内环 The difference is used to obtain the indoor temperature difference T. 内温差 T 内温差 =T 内管 -T 内环 Is it greater than the preset lower limit of indoor temperature difference T? 下限 3. Outdoor ambient temperature T 外环 Is it in (T) 外环下限 T 外环上限 Within the range of ) . If the fan speed of the internal fan is > D 下限 T 内温差 =T 内管 -T 内环 >T 下限 And T 外环下限 ≤T 外环 ≤T外环上限 If the windshield correction condition is met, then the windshield correction condition is satisfied; otherwise, if the windshield of the internal fan is ≤ D... 下限 Or T 内温差 =T 内管 -T 内环 ≤T 下限 Or T 外环 Not in (T) 外环下限 T 外环上限 If the temperature falls within the specified range, the windshield correction condition is deemed not to be met. It should be noted that in this embodiment, the determination of the windshield correction condition is primarily based on indoor parameters. The air conditioning load is determined by these indoor parameters, which in turn determines the condenser load. Specifically, the higher the indoor fan's fan speed, the better the heat exchange of the indoor unit, and the higher the condenser load; the greater the temperature difference between the indoor pipe and the indoor temperature, the higher the condenser load. Understandably, different outdoor ambient temperatures result in different requirements for adjusting the outdoor fan speed. When the outdoor ambient temperature is high, even with high humidity, the condenser heat exchange is good, and frost generally does not occur, so no correction is needed. Conversely, when the outdoor ambient temperature is too low, the humidity is generally not too high, and if the outdoor fan speed is already at its highest setting, no correction is required. The windshield correction condition also specifies the outdoor ambient temperature range within which correction is performed. When all three correction conditions are met simultaneously, the condenser load is high, and the windshield correction condition is satisfied.

[0040] Understandably, if the aforementioned fan damper correction conditions are not met, it indicates that the condenser load is low and the existing fan damper is sufficient to meet the air conditioning operation requirements. Therefore, no correction is needed for the external fan damper. In this case, the fan damper correction value D is adjusted. 修正 The temperature correction value T is set to 0. 修正 Also set to 0.

[0041] S140. If the windshield correction condition is met, the operating correction value corresponding to the windshield of the external fan is corrected according to the decay rate of the external pipe temperature.

[0042] In this embodiment of the invention, if the windshield correction condition is met, it indicates that the condenser load is large. The operating correction value corresponding to the windshield of the external fan is then corrected according to the rate of temperature decay of the external pipe. The operating correction value includes the windshield correction value D. 修正 and the temperature correction value T 修正 Specifically, the outer tube temperature corresponding to the moment t0 when the outer tube temperature begins to decrease is defined as the first decreasing outer tube temperature T. 外管t0 The outer tube temperature after defining a preset descent time Δt is the second descent outer tube temperature T. 外管(t0+△t) The absolute value of the difference between the first and second descending outer tube temperatures is calculated to obtain the outer tube temperature difference value T. 衰减 =|T 外管 t0-T外管( t0+△t)|. The windshield correction value and temperature correction value are corrected according to the outer pipe temperature difference value and the preset correction parameter table, wherein the preset correction parameter table is as follows: Figure 5 As shown, in Figure 5 In the design, three external tube temperature decay values ​​were set, namely the first external tube temperature decay value T. 衰减1 The second outer tube temperature decay value T 衰减2 The third outer tube temperature decay value T 衰减3 , among which, T 衰减1 >T 衰减2 >T 衰减3 and with T 衰减1 T 衰减2 T 衰减3 The node is divided into 4 decay intervals, and the 4 decay intervals are T 衰减1 ≤T 衰减 T 衰减2 ≤T 衰减 <T 衰减1 T 衰减3 ≤T 衰减 <T 衰减2 T 衰减3 >T 衰减 When in T 衰减1 ≤T 衰减 At that time, D 修正 =2,T 修正 =4; when in T 衰减2 ≤T 衰减 <T 衰减1 At that time, D 修正 =2,T 修正 =3; when in T 衰减3 ≤T 衰减 <T 衰减2 At that time, D 修正 =1,T 修正 =2; when in T 衰减3 >T 衰减 At that time, D 修正 =0,T 修正 =0; Understandably, at high humidity, the temperature of the outer tube decays rapidly, T 衰减 The value is relatively large, D 修正 T 修正 A larger value indicates lower humidity, while a smaller value indicates lower humidity. Conversely, at low humidity, the temperature of the outer tube decreases more slowly. 衰减 Smaller values, for example, T 衰减3 D 修正 T 修正 If the value is 0, the windshield of the external fan does not need to be corrected.

[0043] It should be noted that during actual air conditioner operation, the outdoor unit frosts, the condenser's heat exchange deteriorates, and the external pipe temperature decreases. If the outdoor humidity is high, the outdoor unit frosts faster, meaning the condenser also frosts faster, and the external pipe temperature drops more quickly. Therefore, according to T... 衰减 Determine the outdoor humidity level and adjust D accordingly. 修正 T 修正 The windshield of the external fan was modified.

[0044] It should also be noted that, such as Figure 6 As shown, Figure 6 This is a schematic diagram of indoor heating capacity provided in an embodiment of the present invention. Figure 6 In the initial stage of air conditioner operation during heating, i.e., within the first operating cycle, the external pipe temperature will drop rapidly due to the compressor starting. After the operation stabilizes, the external pipe temperature will remain stable for a period of time. As the condenser frosts up, the external pipe temperature will gradually decrease, such as... Figure 6 At times t0 and t0+Δt, until the external pipe temperature becomes too low, triggering the outdoor unit's defrosting process, such as... Figure 6 The defrosting stage.

[0045] Figure 7 This is a flowchart of a control method for an air conditioner outdoor fan provided in another embodiment of the present invention, as shown below. Figure 7 As shown, the method includes steps S210-S270, wherein steps S210-S240 are the same as steps S110-S140 described above. The newly added steps S250-S270 will be introduced first:

[0046] S250. If a change in the windshield of the indoor fan and / or the indoor ambient temperature and / or the outdoor ambient temperature and / or the set temperature is detected, return to step S220.

[0047] S260. If the temperature of the external pipe is detected to be lower than the preset external pipe temperature threshold, the external fan is controlled to stop and the outdoor unit is triggered to defrost.

[0048] S270. Update the corrected operating value according to the obtained defrosting end time and the time when the external tube temperature begins to drop, and return to step S210 until a preset shutdown command is received.

[0049] In this embodiment of the invention, after correcting the operating correction value of the outdoor fan, the air conditioner operates stably. If a change in the fan damper of the indoor fan and / or the indoor ambient temperature and / or the outdoor ambient temperature and / or the set temperature is detected, the process returns to step S220 to further adjust the fan damper of the outdoor fan. If the temperature of the outdoor pipe is detected to be lower than the preset outdoor pipe temperature threshold, indicating severe condenser frosting and excessively low outdoor pipe temperature, the outdoor fan is controlled to stop, and the outdoor unit is triggered to defrost. After defrosting, the defrosting end time t1 and the time when the outdoor pipe temperature begins to decrease t0 are obtained, and the difference between the defrosting end time and the time of decrease is calculated to obtain the correction time difference t1-t0. If the correction time difference (t1-t0) is greater than the preset correction period t... 判断周期 If this indicates that the cycle is no longer in effect, then the running correction value is set to 0, i.e., D... 修正 and T 修正 Set to 0 and clear the correction record for the descent time; if the correction time difference (t1-t0) is not greater than the preset correction period t 判断周期 This indicates that the correction period is still in effect, so the corrected running value remains unchanged, that is, the D value at time t0 is maintained. 修正 and T 修正 Unchanged. It should be noted that in this implementation, the reason for setting t is... 判断周期 This is because outdoor humidity changes during actual use, requiring periodic monitoring and assessment. If a preset shutdown command is received, indicating that the user is turning off the air conditioner, the system will shut it down.

[0050] Figure 8 This is a simplified flowchart of a control method for an air conditioner outdoor fan provided in an embodiment of the present invention. Figure 8 As shown, the outdoor ambient temperature is obtained as T. 外环 The compressor frequency is F 目标 The windshield correction value is D. 修正 =0, windshield correction value is T 修正 =0; In the open-loop phase, according to T 外环 and F 目标 Choose D 开环 =n+D 修正 In the closed-loop phase, based on the temperature difference T between the outer loop and the outdoor temperature... 温差 =|T 外环 -T 外管 |Adjust D 闭环 If T 温差 <T 温差下限 The condenser load is relatively small, D 闭环 =D 当前 -1, maintain t 闭环 Return to the closed-loop phase; T 温差下限 ≤T 温差 ≤T温差上限 -T 修正 The condenser load is moderate, D 闭环 =D 当前 If T 温差 >T 温差上限 -T 修正 The condenser is under heavy load, D 闭环 =D 当前 +1, maintain t 闭环 Return to the closed-loop stage; correct the judgment: 1. The fan speed of the internal fan is >D 下限 2. T 内温差 =T 内管 -T 内环 >T 下限 3. T 外环下限 ≤T 外环 ≤T 外环上限 If this condition is met, the condenser load is relatively high, according to T. 衰减 =|T 外管t0 -T 外管( t0+△t)|to D 修正 and T 修正 Update; if not satisfied, condenser load is low, D 修正 =0,T 修正 =0; In the stable phase, the outdoor fan maintains the current fan speed, and the air conditioner operates stably; when parameters change, it returns to the closed-loop execution phase; in the defrosting phase, if the outdoor pipe temperature is too low, the outdoor unit defrosts, and the outdoor fan stops; after defrosting ends, it enters the correction cycle judgment to determine whether t1-t0 is less than or equal to t 判断周期 If so, D 修正 and T 修正 If not, then D remains unchanged; 修正 and T 修正 Set to 0 and clear the record at time t0; the user shuts down the computer, the air conditioner stops running, and the outdoor fan stops running.

[0051] It should be noted that in this embodiment, the outdoor humidity is determined by the rate of temperature decay of the external pipe. When the outdoor humidity is high, the operating correction value can be adjusted to increase the fan speed of the external fan in a timely manner, slow down the frosting rate, improve the low-temperature heating effect, and optimize the user experience.

[0052] Figure 9 This is a schematic block diagram of a control device 200 for an air conditioner outdoor fan provided in an embodiment of the present invention. Figure 9 As shown, corresponding to the above-described control method for an air conditioner outdoor fan, the present invention also provides a control device 200 for an air conditioner outdoor fan. This control device 200 includes a unit for executing the above-described control method for the air conditioner outdoor fan, and the device can be configured in an air conditioner. Specifically, please refer to... Figure 9The control device 200 for the outdoor fan of the air conditioner includes an acquisition and determination unit 201, an adjustment unit 202, a detection unit 203, and a correction unit 204.

[0053] The acquisition and determination unit 201 is used to determine the windshield of the outdoor fan based on the acquired outdoor ambient temperature, compressor frequency, and current operating cycle if the air conditioner is in heating mode; the adjustment unit 202 is used to adjust the windshield of the outdoor fan based on the outdoor ambient temperature, the current operating cycle, and the acquired external pipe temperature; the detection unit 203 is used to detect whether the windshield correction condition is met based on the outdoor ambient temperature, the acquired indoor ambient temperature, the internal pipe temperature, and the windshield of the air conditioner's internal fan; and the correction unit 204 is used to correct the operating correction value corresponding to the windshield of the outdoor fan based on the decay rate of the external pipe temperature if the windshield correction condition is met.

[0054] In some embodiments, such as this one, the acquisition and determination unit 201 includes a determination unit and a first calculation unit.

[0055] The determining unit is used to acquire the outdoor ambient temperature, compressor frequency, and current operating cycle, and to determine the initial windshield of the external fan based on the outdoor ambient temperature and compressor frequency through a preset temperature-frequency mapping table; the first calculation unit is used to acquire the windshield correction value based on the current operating cycle, and to calculate the sum of the initial windshield and the windshield correction value to obtain the windshield of the external fan.

[0056] In some embodiments, such as this one, the adjustment unit 202 includes a second calculation unit, a third calculation unit, a first adjustment subunit, a second adjustment subunit, and a first holding unit.

[0057] The second calculation unit is used to obtain the temperature of the outer pipe and calculate the absolute value of the difference between the outdoor ambient temperature and the temperature of the outer pipe to obtain the outdoor temperature difference.

[0058] The third calculation unit is used to obtain a temperature correction value according to the current operating cycle, and calculate the difference between the preset upper limit of outdoor temperature difference and the temperature correction value to obtain the corrected upper limit of outdoor temperature difference; the first adjustment subunit is used to lower the windshield of the outdoor fan by a preset level if the outdoor temperature difference is less than the preset lower limit of outdoor temperature difference, and return to the step of obtaining the external pipe temperature and calculating the absolute value of the difference between the outdoor ambient temperature and the external pipe temperature after a preset closed-loop operation time to obtain the outdoor temperature difference; the second adjustment subunit is used to increase the windshield of the outdoor fan by the preset level if the outdoor temperature difference is greater than the corrected upper limit of outdoor temperature difference, and return to the step of obtaining the external pipe temperature and calculating the absolute value of the difference between the outdoor ambient temperature and the external pipe temperature after a preset closed-loop operation time to obtain the outdoor temperature difference; the first holding unit is used to keep the windshield of the outdoor fan unchanged if the outdoor temperature difference is not less than the preset lower limit of outdoor temperature difference and not greater than the corrected upper limit of outdoor temperature difference.

[0059] In some embodiments, such as this one, the detection unit 203 includes a fourth calculation unit, a first determination unit, and a second determination unit.

[0060] The fourth calculation unit is used to obtain the indoor ambient temperature, the inner pipe temperature, and the windshield of the inner fan, and calculate the absolute value of the difference between the inner pipe temperature and the indoor ambient temperature to obtain the indoor temperature difference; the first determination unit is used to determine that the windshield correction condition is met if the windshield of the inner fan is greater than the preset lower limit of the inner fan windshield, the indoor temperature difference is greater than the preset lower limit of the indoor temperature difference, and the outdoor ambient temperature is within the preset upper and lower limits of the outdoor ambient temperature; the second determination unit is used to determine that the windshield correction condition is not met if the windshield of the inner fan is not greater than the preset lower limit of the inner fan windshield / the indoor temperature difference is not greater than the preset lower limit of the indoor temperature difference / the outdoor ambient temperature is not within the preset upper and lower limits of the outdoor ambient temperature.

[0061] In some embodiments, such as this one, the correction unit 204 includes a first definition unit, a second definition unit, a fifth calculation unit, and a correction subunit.

[0062] The first definition unit defines the outer pipe temperature at the moment when the outer pipe temperature begins to decrease as the first decreasing outer pipe temperature; the second definition unit defines the outer pipe temperature after a preset decreasing time as the second decreasing outer pipe temperature; the fifth calculation unit calculates the absolute value of the difference between the first decreasing outer pipe temperature and the second decreasing outer pipe temperature to obtain the outer pipe temperature difference value. The correction subunit corrects the windshield correction value and the temperature correction value according to the outer pipe temperature difference value and a preset correction parameter table.

[0063] In some embodiments, such as this one, the control device 200 for the air conditioner's outdoor fan further includes a detection execution unit, a detection control unit, and an update execution unit.

[0064] The detection execution unit is configured to, if it detects a change in the windshield of the indoor fan and / or the indoor ambient temperature and / or the outdoor ambient temperature and / or the set temperature, return to the step of adjusting the windshield of the outdoor fan based on the outdoor ambient temperature, the current operating cycle, and the acquired external pipe temperature; the detection control unit is configured to, if it detects that the external pipe temperature is less than a preset external pipe temperature threshold, control the outdoor fan to stop and trigger the outdoor unit to defrost; the update execution unit is configured to, based on the acquired defrosting end time and the time when the external pipe temperature begins to decrease, update the corrected operating correction value, and return to the step of determining the windshield of the outdoor fan based on the acquired outdoor ambient temperature, compressor frequency, and current operating cycle, until a preset shutdown command is received.

[0065] In some embodiments, such as this one, the update execution unit includes a sixth calculation unit, a setting clearing unit, and a second holding unit.

[0066] The sixth calculation unit is used to obtain the defrosting end time and the time when the outer pipe temperature begins to drop, and calculate the difference between the defrosting end time and the temperature drop time to obtain the correction time difference; the setting and clearing unit is used to set the running correction value to 0 and clear the correction record of the temperature drop time if the correction time difference is greater than the preset correction period; the second holding unit is used to keep the corrected running correction value unchanged if the correction time difference is not greater than the preset correction period.

[0067] The aforementioned control device for the outdoor fan of an air conditioner can be implemented as a computer program, which can, for example... Figure 10 The air conditioner shown is running.

[0068] Please see Figure 10 , Figure 10 This is a schematic block diagram of an air conditioner provided in an embodiment of the present invention. The air conditioner 300 is a device having a windshield for controlling the outdoor fan.

[0069] See Figure 10 The air conditioner 300 includes a processor 302, a memory, and a network interface 305 connected via a system bus 301. The memory may include a non-volatile storage medium 303 and internal memory 304.

[0070] The non-volatile storage medium 303 can store an operating system 3031 and a computer program 3032. When the computer program 3032 is executed, it causes the processor 302 to execute a control method for an air conditioner outdoor fan.

[0071] The processor 302 provides computing and control capabilities to support the operation of the entire air conditioner 300.

[0072] The internal memory 304 provides an environment for the operation of the computer program 3032 in the non-volatile storage medium 303. When the computer program 3032 is executed by the processor 302, the processor 302 can execute a control method for an air conditioner outdoor fan.

[0073] This network interface 305 is used for network communication with other devices. Those skilled in the art will understand that... Figure 10 The structure shown is merely a block diagram of a portion of the structure related to the present invention and does not constitute a limitation on the air conditioner 300 to which the present invention is applied. The specific air conditioner 300 may include more or fewer components than those shown in the figure, or combine certain components, or have different component arrangements.

[0074] The processor 302 is used to run a computer program 3032 stored in a memory to implement any embodiment of the above-described control method for the outdoor fan of an air conditioner.

[0075] It should be understood that, in this embodiment of the invention, the processor 302 may be a Central Processing Unit (CPU), or it may be other general-purpose processors, digital signal processors (DSPs), application-specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. The general-purpose processor may be a microprocessor or any conventional processor.

[0076] It will be understood by those skilled in the art that all or part of the processes in the methods of the above embodiments can be implemented by a computer program instructing related hardware. The computer program may be stored in a storage medium, which is a computer-readable storage medium. The computer program is executed by at least one processor in the computer system to implement the process steps of the embodiments of the above methods.

[0077] Therefore, the present invention also provides a storage medium. This storage medium can be a computer-readable storage medium. The storage medium stores a computer program. When executed by a processor, the computer program causes the processor to perform any embodiment of the control method for the outdoor fan of the air conditioner described above.

[0078] The storage medium can be any computer-readable storage medium capable of storing program code, such as a USB flash drive, portable hard drive, read-only memory (ROM), magnetic disk, or optical disk.

[0079] Those skilled in the art will recognize that the units and algorithm steps of the various examples described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, computer software, or a combination of both. To clearly illustrate the interchangeability of hardware and software, the components and steps of the various examples have been generally described in terms of functionality in the foregoing description. Whether these functions are implemented in hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementations should not be considered beyond the scope of this invention.

[0080] In the several embodiments provided by this invention, it should be understood that the disclosed apparatus and methods can be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative. For example, the division of each unit is merely a logical functional division, and there may be other division methods in actual implementation. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed.

[0081] The steps in the method of this invention can be adjusted, merged, or reduced in order according to actual needs. The units in the device of this invention can be merged, divided, or reduced according to actual needs. Furthermore, the functional units in the various embodiments of this invention can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit.

[0082] If the integrated unit is implemented as a software functional unit and sold or used as an independent product, it can be stored in a storage medium. Based on this understanding, the technical solution of the present invention, in essence, or the part that contributes to the prior art, or all or part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause an air conditioner to perform all or part of the steps of the methods described in the various embodiments of the present invention.

[0083] In the above embodiments, the descriptions of each embodiment have different focuses. For parts that are not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0084] Obviously, those skilled in the art can make various modifications and variations to this invention without departing from its spirit and scope. Since these modifications and variations fall within the scope of the claims and their equivalents, this invention also intends to include these modifications and variations.

[0085] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in the present invention, and these modifications or substitutions should all be covered within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A control method for an air conditioner outdoor fan, characterized in that, include: If the air conditioner is in heating mode, the windshield of the outdoor fan is determined based on the obtained outdoor ambient temperature, compressor frequency, and current operating cycle. The windshield of the external fan is adjusted according to the outdoor ambient temperature, the current operating cycle, and the obtained external pipe temperature. The outdoor ambient temperature, the obtained indoor ambient temperature, the inner pipe temperature, and the air conditioner's internal fan windshield are used to determine whether the windshield correction conditions are met. If the windshield correction condition is met, the operating correction value corresponding to the windshield of the external fan is corrected according to the decay rate of the external pipe temperature. The step of determining whether the windshield correction conditions are met based on the outdoor ambient temperature, the obtained indoor ambient temperature, the inner pipe temperature, and the windshield of the air conditioner's indoor fan includes: The indoor temperature difference is obtained by acquiring the indoor ambient temperature, the inner pipe temperature, and the windshield of the inner fan, and by calculating the absolute value of the difference between the inner pipe temperature and the indoor ambient temperature. If the windshield of the indoor fan is greater than the preset lower limit of the indoor fan windshield, the indoor temperature difference is greater than the preset lower limit of the indoor temperature difference, and the outdoor ambient temperature is within the preset upper and lower limits of the outdoor ambient temperature, then the windshield correction condition is determined to be met. If the windshield of the indoor fan is not greater than the preset lower limit of the indoor fan windshield / the indoor temperature difference is not greater than the preset lower limit of the indoor temperature difference / the outdoor ambient temperature is not within the preset upper and lower limits of the outdoor ambient temperature, then the windshield correction condition is not met.

2. The method according to claim 1, characterized in that, The steps for determining the windshield of the external fan based on the obtained outdoor ambient temperature, compressor frequency, and current operating cycle include: The system acquires the outdoor ambient temperature, compressor frequency, and current operating cycle, and determines the initial windshield of the external fan based on the outdoor ambient temperature and compressor frequency using a preset temperature-frequency mapping table. The windshield correction value is obtained based on the current operating cycle, and the sum of the initial windshield and the windshield correction value is calculated to obtain the windshield of the external fan.

3. The method according to claim 1, characterized in that, The step of adjusting the windshield of the external fan based on the outdoor ambient temperature, the current operating cycle, and the obtained external duct temperature includes: Obtain the temperature of the outer tube, and calculate the absolute value of the difference between the outdoor ambient temperature and the temperature of the outer tube to obtain the outdoor temperature difference; The temperature correction value is obtained based on the current operating cycle, and the difference between the preset upper limit of outdoor temperature difference and the temperature correction value is calculated to obtain the corrected upper limit of outdoor temperature difference; If the outdoor temperature difference is less than the preset lower limit of the outdoor temperature difference, the windshield of the outdoor fan will be lowered by a preset setting, and after a preset closed-loop operation time, the process of obtaining the temperature of the outer pipe and calculating the absolute value of the difference between the outdoor ambient temperature and the temperature of the outer pipe will be returned to execute to obtain the outdoor temperature difference. If the outdoor temperature difference is greater than the upper limit of the corrected outdoor temperature difference, the windshield of the outdoor fan is increased by the preset level, and after the preset closed-loop operation time, the process of obtaining the external pipe temperature and calculating the absolute value of the difference between the outdoor ambient temperature and the external pipe temperature is returned to execute to obtain the outdoor temperature difference. If the outdoor temperature difference is not less than the preset lower limit of the outdoor temperature difference and not greater than the modified upper limit of the outdoor temperature difference, then the windshield of the outdoor fan remains unchanged.

4. The method according to claim 1, characterized in that, The operational correction value includes a windshield correction value and a temperature correction value. The step of correcting the operational correction value corresponding to the windshield of the external fan according to the decay rate of the external pipe temperature includes: The outer tube temperature corresponding to the moment when the outer tube temperature begins to decrease is defined as the first decreasing outer tube temperature; The outer tube temperature after the preset descent time is defined as the second descent outer tube temperature; The temperature difference value of the outer tube is obtained by calculating the absolute value of the difference between the temperature of the first descending outer tube and the temperature of the second descending outer tube. The windshield correction value and temperature correction value are corrected according to the outer pipe temperature difference value and the preset correction parameter table.

5. The method according to any one of claims 1-4, characterized in that, The method further includes: If a change in the windshield of the indoor fan and / or the indoor ambient temperature and / or the outdoor ambient temperature and / or the set temperature is detected, then return to the step of adjusting the windshield of the outdoor fan according to the outdoor ambient temperature, the current operating cycle, and the obtained external pipe temperature. If the temperature of the external pipe is detected to be lower than the preset external pipe temperature threshold, the external fan is controlled to stop and the outdoor unit is triggered to defrost. The corrected operating value is updated based on the obtained defrosting end time and the time when the external pipe temperature begins to drop. The process then returns to the step of determining the windshield of the external fan based on the obtained outdoor ambient temperature, compressor frequency, and current operating cycle, until a preset shutdown command is received.

6. The method according to claim 5, characterized in that, The step of updating the corrected operating value based on the obtained defrosting end time and the time when the outer pipe temperature begins to decrease includes: Obtain the defrosting end time and the time when the temperature of the outer tube begins to drop, and calculate the difference between the defrosting end time and the temperature drop time to obtain the corrected time difference; If the correction time difference is greater than the preset correction period, the running correction value is set to 0, and the correction record at the descent time is cleared. If the correction time difference is not greater than the preset correction period, then the corrected running correction value remains unchanged.

7. A control device for an air conditioner outdoor fan, characterized in that, include: The acquisition and determination unit is used to determine the windshield of the outdoor fan based on the acquired outdoor ambient temperature, compressor frequency and current operating cycle if the air conditioner is in heating mode. The adjustment unit is used to adjust the windshield of the external fan according to the outdoor ambient temperature, the current operating cycle, and the acquired external pipe temperature. The detection unit is used to detect whether the windshield correction conditions are met based on the outdoor ambient temperature, the acquired indoor ambient temperature, the inner pipe temperature, and the windshield of the air conditioner's internal fan. The correction unit is used to correct the operating correction value corresponding to the windshield of the external fan according to the decay rate of the external pipe temperature if the windshield correction condition is met. The detection unit includes: The fourth calculation unit is used to obtain the indoor ambient temperature, the inner pipe temperature, and the windshield of the inner fan, and to calculate the absolute value of the difference between the inner pipe temperature and the indoor ambient temperature to obtain the indoor temperature difference. The first determination unit is used to determine that the windshield correction condition is met if the windshield of the indoor fan is greater than the preset lower limit of the indoor fan windshield, the indoor temperature difference is greater than the preset lower limit of the indoor temperature difference, and the outdoor ambient temperature is within the preset upper and lower limits of the outdoor ambient temperature. The second determination unit is used to determine that the windshield correction condition is not met if the windshield of the indoor fan is not greater than the preset lower limit of the indoor fan windshield / the indoor temperature difference is not greater than the preset lower limit of the indoor temperature difference / the outdoor ambient temperature is not within the range of the preset upper and lower limits of the outdoor ambient temperature.

8. An air conditioner, characterized in that, The air conditioner includes a memory and a processor. The memory stores a computer program, and the processor executes the computer program to implement the method as described in any one of claims 1-6.

9. A computer-readable storage medium, characterized in that, The storage medium stores a computer program that, when executed by a processor, can implement the method as described in any one of claims 1-6.

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