A control method and device of an air conditioner, a storage medium and an air conditioner

Abstract

The application provides a kind of air conditioner control method, device, storage medium and air conditioner, the method comprises: when the air conditioner runs refrigeration mode, the indoor environment temperature, the outdoor environment temperature, the air dew point temperature and the set temperature of the air conditioner, the inner fan wind range and the indoor heat exchanger temperature are acquired;Determine whether the indoor environment temperature, the outdoor environment temperature air dew point temperature and the set temperature of the air conditioner, the inner fan wind range and the indoor heat exchanger temperature obtained satisfy the first preset condition;If it is judged to satisfy the first preset condition, enter the anti-odor frequency correction control, the compressor operating frequency of the air conditioner is corrected to prevent odor generation.The scheme provided by the application can effectively inhibit air conditioner air odor.

Description

Technical Field

[0001] This invention relates to the field of control, and more particularly to a control method, apparatus, storage medium, and air conditioner for an air conditioner. Background Technology

[0002] Air conditioners operate in complex environments. When the indoor heat exchanger encounters specific conditions such as heat, light, oxides, microorganisms, and acidic substances, the hydrophilic aluminum foil coating of the heat exchanger is prone to hydrolysis and oxidation, producing odorous substances on the surface. After the air conditioner operates at low temperatures, a large amount of condensate accumulates on the surface of the hydrophilic aluminum foil. When the indoor temperature reaches the set temperature, the outdoor unit stops working, and the indoor unit switches to fan mode. The condensate continuously evaporates and diffuses into the air. If odor molecules are present on the surface of the hydrophilic aluminum foil, the evaporating moisture will carry the odor into the air, causing an unpleasant smell from the air conditioner and affecting the user experience.

[0003] Research has revealed a strong correlation between the appearance of odors and the evaporation temperature of the indoor heat exchanger. When the evaporation temperature and dew point of the indoor heat exchanger are low, condensation continues to form on the heat exchanger. This causes the aluminum foil fins and the odor molecules they produce to remain encased in condensation, making it difficult for the water vapor from the air conditioner's exhaust to carry the odor molecules into the air, thus suppressing the odor from the air conditioner. Conversely, when the evaporation temperature and dew point of the indoor heat exchanger are high, there is less or no condensation, and the aluminum foil fins and the odor molecules they produce are exposed to the air. These odor molecules are then carried into the air through water vapor evaporation or directly by the air conditioner's exhaust, resulting in an odor from the air conditioner. Summary of the Invention

[0004] The main objective of this invention is to overcome the deficiencies of the aforementioned related technologies and provide a control method, device, storage medium, and air conditioner for air conditioning, so as to solve the problem that odor molecules exist on the surface of the hydrophilic aluminum foil of the air conditioner fin heat exchanger, and the air conditioner blows out odors into the air during the evaporation of water vapor, causing odors in the air conditioner.

[0005] This invention provides a method for controlling an air conditioner, comprising: when the air conditioner is operating in cooling mode, acquiring indoor ambient temperature, outdoor ambient temperature, air dew point temperature, and the set temperature, indoor fan speed, and indoor heat exchanger temperature of the air conditioner; determining whether the acquired indoor ambient temperature, outdoor ambient temperature, air dew point temperature, and the set temperature, indoor fan speed, and indoor heat exchanger temperature of the air conditioner meet a first preset condition; if the first preset condition is met, then entering an odor prevention frequency correction control to correct the operating frequency of the air conditioner compressor to prevent odor generation.

[0006] Optionally, the first preset conditions include: the temperature difference between the indoor ambient temperature and the set temperature of the air conditioner is less than or equal to a preset temperature difference; the preset temperature difference is the preset temperature difference between the indoor ambient temperature and the set temperature of the air conditioner; the indoor fan speed is set to a preset speed; the preset speed is a speed that is prone to producing odors; the outdoor ambient temperature is less than or equal to a first preset outdoor ambient temperature threshold or greater than or equal to a second preset outdoor ambient temperature threshold; the indoor ambient temperature is less than or equal to a preset indoor ambient temperature threshold; and the indoor heat exchanger temperature is greater than or equal to the sum of the first preset temperature difference threshold and the indoor air dew point temperature.

[0007] Optionally, the compressor operating frequency of the air conditioner is corrected, including: the corrected maximum operating frequency of the compressor under the preset fan setting is equal to the sum of the current maximum operating frequency of the compressor under the preset fan setting and the preset additional upper limit frequency for odor prevention corresponding to the preset fan setting; and / or, the corrected target operating frequency of the compressor under the preset fan setting is equal to the sum of the current target operating frequency of the compressor under the preset fan setting and the preset additional target frequency for odor prevention corresponding to the preset fan setting.

[0008] Optionally, it also includes: when the sum of the indoor heat exchanger temperature of the air conditioner and the first preset temperature difference threshold is less than the air dew point temperature or the compressor of the air conditioner stops for a continuous first preset time, the odor prevention frequency correction control is exited.

[0009] Optionally, the method further includes: after the compressor stops when the indoor ambient temperature reaches the set shutdown temperature, reducing the fan speed of the indoor fan of the air conditioner to a preset level; and / or, after the compressor stops when the indoor ambient temperature reaches the set shutdown temperature, controlling the compressor to restart when a second preset condition is met, wherein the second preset condition includes at least one of the following conditions: the indoor heat exchanger temperature of the air conditioner is greater than or equal to the sum of a first preset temperature difference threshold and the air dew point temperature; the indoor ambient temperature is greater than or equal to the sum of a second preset temperature difference threshold and the set temperature of the air conditioner; and the compressor shutdown time reaches a second preset time.

[0010] Another aspect of the present invention provides a control device for an air conditioner, comprising: an acquisition unit, configured to acquire indoor ambient temperature, outdoor ambient temperature, air dew point temperature, and the set temperature, indoor fan speed, and indoor heat exchanger temperature of the air conditioner when the air conditioner is operating in cooling mode; a judgment unit, configured to judge whether the indoor ambient temperature, outdoor ambient temperature, air dew point temperature, and the set temperature, indoor fan speed, and indoor heat exchanger temperature acquired by the acquisition unit meet a first preset condition; and a control unit, configured to, if the judgment unit judges that the first preset condition is met, enter an odor prevention frequency correction control to correct the operating frequency of the air conditioner compressor to prevent odor generation.

[0011] Optionally, the first preset conditions include: the temperature difference between the indoor ambient temperature and the set temperature of the air conditioner is less than or equal to a preset temperature difference; the preset temperature difference is the preset temperature difference between the indoor ambient temperature and the set temperature of the air conditioner; the indoor fan speed is set to a preset speed; the preset speed is a speed that is prone to producing odors; the outdoor ambient temperature is less than or equal to a first preset outdoor ambient temperature threshold or greater than or equal to a second preset outdoor ambient temperature threshold; the indoor ambient temperature is less than or equal to a preset indoor ambient temperature threshold; and the indoor heat exchanger temperature is greater than or equal to the sum of the first preset temperature difference threshold and the indoor air dew point temperature.

[0012] Optionally, the control unit corrects the compressor operating frequency of the air conditioner by: the corrected maximum compressor operating frequency under the preset fan setting being equal to the sum of the current maximum compressor operating frequency under the preset fan setting and the preset additional upper limit frequency for odor prevention corresponding to the preset fan setting; and / or, the corrected target compressor operating frequency under the preset fan setting being equal to the sum of the current target compressor operating frequency under the preset fan setting and the preset additional target frequency for odor prevention corresponding to the preset fan setting.

[0013] Optionally, the control unit is further configured to: exit the odor prevention frequency correction control when the sum of the indoor heat exchanger temperature of the air conditioner and the first preset temperature difference threshold is less than the air dew point temperature or the compressor of the air conditioner stops for a continuous first preset time.

[0014] Optionally, the control unit is further configured to: after the compressor stops when the indoor ambient temperature reaches the set stop temperature, reduce the fan speed of the indoor fan of the air conditioner to a preset level; and / or, the control unit is further configured to: after the compressor stops when the indoor ambient temperature reaches the set stop temperature, control the compressor to restart when a second preset condition is met, wherein the second preset condition includes at least one of the following conditions: the indoor heat exchanger temperature of the air conditioner is greater than or equal to the sum of a first preset temperature difference threshold and the air dew point temperature; the indoor ambient temperature is greater than or equal to the sum of a second preset temperature difference threshold and the set temperature of the air conditioner; and the compressor's shutdown time reaches a second preset time.

[0015] In another aspect, the present invention provides a storage medium having a computer program stored thereon, which, when executed by a processor, implements the steps of any of the methods described above.

[0016] In another aspect, the present invention provides an air conditioner, including a processor, a memory, and a computer program stored in the memory that can run on the processor, wherein the processor executes the program to implement the steps of any of the methods described above.

[0017] In another aspect, the present invention provides an air conditioner including any of the control devices described above.

[0018] According to the technical solution of this invention, under operating parameter conditions that easily generate odors, the upper limit of the compressor's operating frequency is corrected, and the target operating frequency of the compressor is also corrected to ensure that it can produce condensate and thus prevent odors. During the compressor shutdown phase, odor prevention is achieved by controlling the switching of the indoor fan's fan speed and the shutdown duration. This effectively suppresses odors from the air conditioner and improves the user experience. Attached Figure Description

[0019] The accompanying drawings, which are included to provide a further understanding of the invention and form part of this invention, illustrate exemplary embodiments of the invention and are used to explain the invention, but do not constitute an undue limitation of the invention. In the drawings:

[0020] Figure 1 This is a schematic diagram of an embodiment of the air conditioner control method provided by the present invention;

[0021] Figure 2 This is a schematic diagram of another embodiment of the air conditioner control method provided by the present invention;

[0022] Figure 3 This is a schematic diagram of another embodiment of the air conditioner control method provided by the present invention;

[0023] Figure 4 This is a schematic diagram of another embodiment of the air conditioner control method provided by the present invention;

[0024] Figure 5 This is a structural block diagram of an embodiment of the air conditioner control device provided by the present invention. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be clearly and completely described below in conjunction with specific embodiments and corresponding drawings. Obviously, the described embodiments are only a part of the embodiments of this invention, and not all of them. Based on the embodiments of this invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this invention.

[0026] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this invention are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of the invention described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover a non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0027] This invention provides a method for controlling an air conditioner.

[0028] Figure 1 This is a schematic diagram of an embodiment of the air conditioner control method provided by the present invention.

[0029] like Figure 1 As shown, according to an embodiment of the present invention, the air conditioner control method includes at least steps S110, S120 and S130.

[0030] Step S110: When the air conditioner is in cooling mode, acquire the indoor ambient temperature, outdoor ambient temperature, air dew point temperature, and the set temperature, indoor fan speed, and indoor heat exchanger temperature of the air conditioner.

[0031] Specifically, after setting the cooling mode and turning on the compressor, the indoor ambient temperature T is detected. 内环 The set temperature T of the air conditioner 设定 , Indoor fan damper, Outdoor ambient temperature T 外环 T 内管 Air dew point temperature T 露点 .

[0032] Indoor ambient temperature T 内环 Unit: °C. This value is the detected value, set at temperature T. 设定 The user can set the temperature in °C; this value is the detected value. The indoor fan speed setting can be set by the user; this value is the detected value. The outdoor ambient temperature (T) is also displayed. 外环 Unit: °C, this value is the measured value; indoor heat exchanger temperature, specifically the indoor heat exchanger tube temperature T. 内管 Unit: °C, this value is the measured value. Indoor air dew point temperature T 露点 When air comes into contact with a cold surface below this temperature, condensation will occur. The unit is ℃.

[0033] Step S120: Determine whether the obtained indoor ambient temperature, outdoor ambient temperature, air dew point temperature, and the set temperature of the air conditioner, the fan speed of the indoor fan, and the temperature of the indoor heat exchanger meet the first preset condition.

[0034] In one specific implementation, the first preset condition includes:

[0035] (1) The temperature difference between the indoor ambient temperature and the set temperature of the air conditioner is less than or equal to the preset temperature difference ΔT. 预设温差 That is, T 内环 -T 设定 ≤ΔT 预设温差 The preset temperature difference ranges from, for example, 0℃ to 30℃. If T... 内环 -T 设定 ≤ΔT 预设温差 This indicates that when the indoor ambient temperature is small compared to the set temperature, the variable frequency compressor operates at a low frequency, the indoor heat exchanger temperature is high, and condensation is not easily generated. Therefore, odor prevention frequency correction is required at this time.

[0036] (2) The indoor fan speed setting is a preset speed setting; the preset speed setting is a speed setting that is prone to producing odors. The speed setting that the air conditioner is prone to producing odors can be determined by experiment. For example, it can be at least one of the following: silent speed, low speed, medium speed, high speed, and strong speed.

[0037] At the same operating frequency, lowering the indoor fan speed reduces the circulating air volume, which can lower the indoor heat exchanger temperature and make condensation more likely. However, in reality, when the indoor fan speed is set low, the compressor operating frequency is usually limited to ensure operational reliability and reduce noise during operation, lowering its maximum and target operating frequencies. Therefore, although lowering the speed reduces the circulating air volume, the compressor operating frequency is also significantly reduced, resulting in a substantial decrease in compressor output capacity. This causes the actual indoor heat exchanger temperature to rise, making condensation less likely. Thus, odor prevention frequency correction is necessary in this case.

[0038] (3) The outdoor ambient temperature is less than or equal to the first preset outdoor ambient temperature threshold T 外环预设1 Or greater than or equal to the second preset outdoor ambient temperature threshold T 外环预设2 That is, T 外环 ≤T 外环预设1 or T 外环 ≥T 外环预设2 The first preset outdoor ambient temperature threshold T 外环预设1 Second preset outdoor ambient temperature threshold T 外环预设2 This refers to the outer ring temperature range for low-frequency operation, in °C, with values ​​ranging from 10 to 55 °C (T). 外环预设1 <T 外环预设2 .

[0039] If T is satisfied 外环 ≤T 外环预设1 This indicates that the outdoor ambient temperature is low. Within this range, due to the low load, the variable frequency compressor operates at a lower frequency to save energy; T 外环 ≥T 外环预设2 This indicates that the outdoor ambient temperature is high. Within this range, due to the high load, the upper limit frequency of the variable frequency compressor is also low in order to ensure the reliability of the compressor. This results in a higher actual indoor heat exchanger temperature, making it less likely to produce condensation. Therefore, odor prevention frequency correction is required at this time.

[0040] (4) The indoor ambient temperature is less than or equal to the preset indoor ambient temperature threshold; that is, T 内环 ≤T 内环预设 ;T 内环预设 The inner ring temperature range for low-frequency operation is expressed in °C, and its value range includes, for example, 10–40 °C.

[0041] If T is satisfied 内环 ≤T 内环预设 This indicates that the indoor ambient temperature is low. Within this range, due to the low load, the variable frequency compressor operates at a low frequency to save energy, resulting in a higher actual indoor heat exchanger temperature and making it less likely to produce condensation. Therefore, odor prevention frequency correction is required at this time.

[0042] (5) The indoor heat exchanger temperature is greater than or equal to the sum of the first preset temperature difference threshold and the indoor air dew point temperature. 内管 ≥ΔT1+T 露点 The first preset temperature difference threshold ΔT1 is the preset temperature difference for condensation on the indoor heat exchanger, in °C, and its range includes, for example, 0 °C to 8 °C. Condensation only occurs when the indoor heat exchanger temperature is lower than the indoor air dew point temperature. Since sensor detection has errors (e.g., 0.5 °C), without setting a preset temperature difference for condensation, it's difficult to determine whether condensation occurs when the indoor heat exchanger temperature is close to the indoor air dew point temperature. Increasing the preset temperature difference for condensation ensures that the indoor heat exchanger temperature is several degrees Celsius higher than the air dew point temperature, guaranteeing no condensation occurs.

[0043] If T is satisfied 内管 ≥ΔT1+T 露点 This indicates that the indoor heat exchanger temperature is high and condensation is unlikely to occur, so odor prevention frequency correction is required at this time.

[0044] Step S130: If it is determined that the first preset condition is met, then the odor prevention frequency correction control is entered to correct the operating frequency of the air conditioner compressor in order to prevent odor from being generated.

[0045] In one specific embodiment, the maximum operating frequency of the air conditioner compressor under a preset fan speed setting is corrected. The corrected maximum operating frequency of the compressor under the preset fan speed setting is equal to the sum of the current maximum operating frequency of the compressor under the preset fan speed setting and the preset additional upper limit frequency for odor prevention corresponding to the preset fan speed setting. That is, the corrected [maximum operating frequency of fan speed setting X] = the original [maximum operating frequency of fan speed setting X] + [additional upper limit frequency for odor prevention of fan speed setting X (preset additional upper limit frequency for odor prevention corresponding to the preset fan speed setting)]. The preset additional upper limit frequency for odor prevention corresponding to the preset fan speed setting is the additional upper limit frequency added to the upper limit frequency at which the compressor can operate under different fan speed settings in order to suppress odors. The unit is Hz, and its value range includes, for example, 0 to 20 Hz.

[0046] The maximum operating frequency of the compressor under the preset fan speed setting is the highest frequency that it can operate at. Since a higher operating frequency produces more condensate, a higher upper limit frequency for the compressor is more beneficial for condensate production. However, the upper limit frequency of the compressor should not be pursued blindly; the reliability of the air conditioning system after increasing the frequency must also be considered. The correction to the maximum operating frequency of the compressor under the preset fan speed setting is an additional frequency added to the upper limit frequency of the compressor under different fan speed settings. The value of the "Additional Upper Limit Frequency for Odor Prevention at Fan Speed ​​X" needs to consider not only condensate production but also ensure the reliable operation of the air conditioning system after increasing the frequency.

[0047] The preset odor prevention upper limit frequency can be determined through experimental testing. For example, by setting a very high frequency and waiting for it to run stably, it can be determined whether the indoor unit's air outlet temperature is too low (if the air outlet temperature is too low, cold air will blow into people and affect user comfort), whether the system exhaust pressure is too high (if the exhaust pressure exceeds the maximum pressure range allowed by the compressor, it will damage the compressor), and whether the operating current is too high (if the current is too high, the air conditioner controller will be overloaded and there is a risk of board burnout).

[0048] In one specific embodiment, the operating target frequency of the air conditioner compressor under the preset fan speed is corrected. The corrected operating target frequency of the compressor under the preset fan speed is equal to the sum of the current operating target frequency of the compressor under the preset fan speed and the preset anti-odor additional target frequency corresponding to the preset fan speed. That is, the corrected [X fan speed operating target frequency] = current operating target frequency + [X fan speed anti-odor additional target frequency (preset anti-odor additional target frequency corresponding to the preset fan speed)]. The preset anti-odor additional target frequency corresponding to the preset fan speed is, under different fan speeds, the additional target frequency added to the compressor operating target frequency under that fan speed to suppress odors, in units of Hz, and its value range includes, for example, 0 to 20 Hz.

[0049] The target operating frequency of the air conditioner compressor under the preset fan speed is corrected by adding an additional frequency to the target operating frequency of the compressor under different fan speeds. The value of the additional target frequency for odor prevention under fan speed X needs to take into account the generation of condensate water, and also needs to ensure the reliable operation of the air conditioning system after the frequency is increased.

[0050] The modified target operating frequency of the compressor under the preset fan speed should be lower than the modified maximum operating frequency of the compressor under the preset fan speed. If the modified target operating frequency of the compressor under the preset fan speed is higher than the modified maximum operating frequency of the compressor under the preset fan speed, then the modified target operating frequency of the compressor under the preset fan speed is directly taken as the value of the modified maximum operating frequency of the compressor under the preset fan speed. That is, the modified target operating frequency of the compressor under the preset fan speed is equal to the modified maximum operating frequency of the compressor under the preset fan speed.

[0051] The target frequency is the frequency that the compressor needs to reach during the period before it stabilizes (e.g., the initial frequency ramp-up phase after startup). A higher target frequency is more conducive to condensate production. However, the target frequency should not be pursued blindly; the reliability of the air conditioning system after increasing the frequency must also be considered. The preset anti-odor additional target frequency corresponding to the preset fan speed can be determined through experimental testing. Since the target frequency is during the period when the compressor is not stabilizing, parameters such as the air conditioning system's pressure, exhaust temperature, and operating current are still changing. If the changes are too rapid, the parameters will lag in reflecting to the controller, potentially causing control failure. Therefore, during testing, the main focus should be on whether the changes in parameters such as the air conditioning system's pressure, exhaust temperature, and operating current are too rapid and whether they can be effectively controlled.

[0052] Figure 2 This is a schematic diagram of another embodiment of the air conditioner control method provided by the present invention.

[0053] like Figure 2 As shown, based on the above embodiments, according to another embodiment of the present invention, the air conditioner control method further includes step S140.

[0054] Step S140: When the sum of the indoor heat exchanger temperature of the air conditioner and the first preset temperature difference threshold is less than the air dew point temperature or the compressor of the air conditioner stops for a continuous first preset time, the odor prevention frequency correction control is exited.

[0055] That is, continuous time α satisfies T 内管 +ΔT1<T 露点If the compressor stops, the odor prevention frequency correction control will be discontinued. The first preset temperature difference threshold ΔT1 is the preset temperature difference for condensation on the indoor heat exchanger, in °C, and its range includes, for example, 0 °C to 8 °C. The first preset time α is the continuous condensation time of the indoor heat exchanger, in min, and its range includes, for example, 3 to 60 min.

[0056] If the continuous time interval α satisfies T 内管 +ΔT1<T 露点 This indicates that the indoor heat exchanger temperature is low and sufficient condensate has been produced, so the odor prevention frequency correction can be discontinued. If the compressor has stopped running, then the odor prevention frequency correction can be discontinued.

[0057] Figure 3 This is a schematic diagram of another embodiment of the air conditioner control method provided by the present invention.

[0058] like Figure 3 As shown, based on any of the above embodiments, according to another embodiment of the present invention, the air conditioner control method further includes step S150.

[0059] In step S150, after the compressor stops when the indoor ambient temperature reaches the set shutdown temperature, the fan speed of the indoor fan of the air conditioner is reduced to a preset level. If the fan speed of the indoor fan is already at the lowest settable level (i.e., the lowest settable fan speed), the current fan speed is maintained.

[0060] The preset setting refers to the number of settings to be reduced. For example, after the compressor stops at the set temperature, the indoor fan speed is reduced by one setting. When the indoor environment has reached (or fallen below) the user-set temperature, the compressor is usually stopped to save energy, while the indoor fan continues to blow air. When the fan speed is high, condensate is easily dried quickly. Stopping the fan can lead to poor air circulation, making the user feel stuffy. Therefore, the indoor fan speed is reduced at this stage. If the indoor fan is already at its lowest settable speed, the current speed is maintained.

[0061] Figure 4 This is a schematic diagram of another embodiment of the air conditioner control method provided by the present invention.

[0062] like Figure 4 As shown, based on any of the above embodiments, according to another embodiment of the present invention, the air conditioner control method further includes step S160.

[0063] Step S160: After the compressor stops when the indoor ambient temperature reaches the set shutdown temperature, the compressor is restarted when the second preset condition is met.

[0064] If the compressor is shut down for too long, the condensate on the indoor heat exchanger will easily dry out. Therefore, the compressor needs to be restarted before the condensate dries out. The second preset condition includes at least one of the following conditions: the compressor is restarted when at least one of the following conditions is met.

[0065] (1) The indoor heat exchanger temperature of the air conditioner is greater than or equal to the sum of the first preset temperature difference threshold and the air dew point temperature; that is, T 内管 ≥ΔT1+T 露点 The first preset temperature difference threshold ΔT1 is the preset temperature difference for condensation on the indoor heat exchanger, in °C, and its range includes, for example, 0 °C to 8 °C. Condensation only occurs when the indoor heat exchanger temperature is lower than the indoor air dew point temperature. Since sensor detection has errors (e.g., 0.5 °C), without setting a preset temperature difference for condensation, it would be difficult to determine whether condensation occurs when the indoor heat exchanger temperature is close to the indoor air dew point temperature. Increasing the preset temperature difference for condensation ensures that the indoor heat exchanger temperature is several degrees Celsius higher than the air dew point temperature, thus preventing condensation from forming.

[0066] After the compressor stops running, the refrigerant stops circulating, while the indoor fan continues to blow air, carrying away the cold energy stored in the indoor heat exchanger, causing the temperature of the indoor heat exchanger to gradually rise. If T is satisfied... 内管 ≥ΔT1+T 露点 This indicates that the indoor heat exchanger temperature has risen too much, and there is a risk that the condensate will be blown dry, so the compressor is restarted.

[0067] (2) The indoor ambient temperature is greater than or equal to the sum of the second preset temperature difference threshold and the set temperature of the air conditioner; that is, T 内环 ≥ΔT2+T 设定 The second preset temperature difference threshold is a preset temperature difference threshold between the indoor ambient temperature and the set temperature of the air conditioner.

[0068] When the indoor temperature is higher than the user's set temperature, the compressor is restarted to ensure a comfortable user experience.

[0069] (3) The compressor's shutdown time reaches the second preset time. The second preset time λ is the continuous shutdown time after the compressor reaches the temperature point and stops, in minutes, and its value range includes, for example, 3 to 60 minutes.

[0070] The compressor has been shut down for the longest time, and there is a risk that the condensate will be dried out, so the compressor is restarted.

[0071] During cooling operation, the air conditioner controlled by the solution of this invention can effectively suppress the odor from the air conditioner and improve the user experience by correcting the target frequency and upper limit frequency of operation during periods when odors are likely to be generated and adjusting the compressor shutdown time.

[0072] The present invention also provides a control device for an air conditioner.

[0073] Figure 5 This is a structural block diagram of an embodiment of the air conditioner control device provided by the present invention. Figure 5 As shown, the control device 100 of the air conditioner includes: an acquisition unit 110, a judgment unit 120, and a control unit 130.

[0074] The acquisition unit 110 is used to acquire the indoor ambient temperature, outdoor ambient temperature, air dew point temperature, and the set temperature, indoor fan speed, and indoor heat exchanger temperature of the air conditioner when the air conditioner is in cooling mode.

[0075] Specifically, after setting the cooling mode and turning on the compressor, the indoor ambient temperature T is detected. 内环 The set temperature T of the air conditioner 设定 , Indoor fan damper, Outdoor ambient temperature T 外环 T 内管 Air dew point temperature T 露点 .

[0076] Indoor ambient temperature T 内环 Unit: °C. This value is the detected value, set at temperature T. 设定 The user can set the temperature in °C; this value is the detected value. The indoor fan speed setting can be set by the user; this value is the detected value. The outdoor ambient temperature (T) is also displayed. 外环 Unit: °C, this value is the measured value; indoor heat exchanger temperature, specifically the indoor heat exchanger tube temperature T. 内管 Unit: °C, this value is the measured value. Indoor air dew point temperature T 露点 When air comes into contact with a cold surface below this temperature, condensation will occur. The unit is ℃.

[0077] The judgment unit 120 is used to determine whether the indoor ambient temperature, outdoor ambient temperature, air dew point temperature, and the set temperature of the air conditioner, the fan speed of the indoor fan, and the temperature of the indoor heat exchanger obtained by the acquisition unit meet the first preset condition.

[0078] In one specific implementation, the first preset condition includes:

[0079] (1) The temperature difference between the indoor ambient temperature and the set temperature of the air conditioner is less than or equal to the preset temperature difference ΔT. 预设温差 That is, T 内环 -T 设定 ≤ΔT 预设温差 The preset temperature difference ranges from, for example, 0℃ to 30℃. If T... 内环 -T 设定 ≤ΔT预设温差 This indicates that when the indoor ambient temperature is small compared to the set temperature, the variable frequency compressor operates at a low frequency, the indoor heat exchanger temperature is high, and condensation is not easily generated. Therefore, odor prevention frequency correction is required at this time.

[0080] (2) The indoor fan speed setting is a preset speed setting; the preset speed setting is a speed setting that is prone to producing odors. The speed setting that the air conditioner is prone to producing odors can be determined by experiment. For example, it can be at least one of the following: silent speed, low speed, medium speed, high speed, and strong speed.

[0081] At the same operating frequency, lowering the indoor fan speed reduces the circulating air volume, which can lower the indoor heat exchanger temperature and make condensation more likely. However, in reality, when the indoor fan speed is set low, the compressor operating frequency is usually limited to ensure operational reliability and reduce noise during operation, lowering its maximum and target operating frequencies. Therefore, although lowering the speed reduces the circulating air volume, the compressor operating frequency is also significantly reduced, resulting in a substantial decrease in compressor output capacity. This causes the actual indoor heat exchanger temperature to rise, making condensation less likely. Thus, odor prevention frequency correction is necessary in this case.

[0082] (3) The outdoor ambient temperature is less than or equal to the first preset outdoor ambient temperature threshold T 外环预设1 Or greater than or equal to the second preset outdoor ambient temperature threshold T 外环预设2 That is, T 外环 ≤T 外环预设1 or T 外环 ≥T 外环预设2 The first preset outdoor ambient temperature threshold T 外环预设1 Second preset outdoor ambient temperature threshold T 外环预设2 This refers to the outer ring temperature range for low-frequency operation, in °C, with values ​​ranging from 10 to 55 °C (T). 外环预设1 <T 外环预设2 .

[0083] If T is satisfied 外环 ≤T 外环预设1 This indicates that the outdoor ambient temperature is low. Within this range, due to the low load, the variable frequency compressor operates at a lower frequency to save energy; T 外环 ≥T 外环预设2 This indicates that the outdoor ambient temperature is high. Within this range, due to the high load, the upper limit frequency of the variable frequency compressor is also low in order to ensure the reliability of the compressor. This results in a higher actual indoor heat exchanger temperature, making it less likely to produce condensation. Therefore, odor prevention frequency correction is required at this time.

[0084] (4) The indoor ambient temperature is less than or equal to the preset indoor ambient temperature threshold; that is, T 内环 ≤T 内环预设 ;T 内环预设The inner ring temperature range for low-frequency operation is expressed in °C, and its value range includes, for example, 10–40 °C.

[0085] If T is satisfied 内环 ≤T 内环预设 This indicates that the indoor ambient temperature is low. Within this range, due to the low load, the variable frequency compressor operates at a low frequency to save energy, resulting in a higher actual indoor heat exchanger temperature and making it less likely to produce condensation. Therefore, odor prevention frequency correction is required at this time.

[0086] (5) The indoor heat exchanger temperature is greater than or equal to the sum of the first preset temperature difference threshold and the indoor air dew point temperature. 内管 ≥ΔT1+T 露点 The first preset temperature difference threshold ΔT1 is the preset temperature difference for condensation on the indoor heat exchanger, in degrees Celsius (°C), and its range includes, for example, 0°C to 8°C. Condensation only occurs when the indoor heat exchanger temperature is lower than the indoor air dew point temperature. Since sensor detection has errors (e.g., 0.5°C), without a preset condensation temperature difference, it's difficult to determine whether condensation occurs when the indoor heat exchanger temperature is close to the indoor air dew point temperature. Increasing the preset condensation temperature difference ensures that the indoor heat exchanger temperature is several degrees Celsius higher than the air dew point temperature, guaranteeing no condensation occurs. If T... 内管 ≥ΔT1+T 露点 This indicates that the indoor heat exchanger temperature is high and condensation is unlikely to occur, so odor prevention frequency correction is required at this time.

[0087] If the judgment unit 120 determines that the above conditions are met simultaneously, then it determines that the first preset condition is met.

[0088] The control unit 130 is configured to, if the judgment unit 120 determines that the first preset condition is met, enter the odor prevention frequency correction control to correct the operating frequency of the air conditioner compressor in order to prevent odor generation.

[0089] In one specific embodiment, the control unit corrects the compressor operating frequency of the air conditioner by: correcting the maximum operating frequency of the compressor under a preset fan speed setting. The corrected maximum operating frequency of the compressor under the preset fan speed setting is equal to the sum of the current maximum operating frequency of the compressor under the preset fan speed setting and the preset additional upper limit frequency for odor prevention corresponding to the preset fan speed setting. That is, the corrected [maximum operating frequency of fan speed setting X] = the original [maximum operating frequency of fan speed setting X] + [additional upper limit frequency for odor prevention of fan speed setting X (preset additional upper limit frequency for odor prevention corresponding to the preset fan speed setting)]. The preset additional upper limit frequency for odor prevention corresponding to the preset fan speed setting is the additional upper limit frequency added to the upper limit frequency at which the compressor can operate under different fan speed settings in order to suppress odors. The unit is Hz, and its value range includes, for example, 0 to 20 Hz.

[0090] The maximum operating frequency of the compressor under the preset fan speed setting is the highest frequency that it can operate at. Since a higher operating frequency produces more condensate, a higher upper limit frequency for the compressor is more beneficial for condensate production. However, the upper limit frequency of the compressor should not be pursued blindly; the reliability of the air conditioning system after increasing the frequency must also be considered. The correction to the maximum operating frequency of the compressor under the preset fan speed setting is an additional frequency added to the upper limit frequency of the compressor under different fan speed settings. The value of the "Additional Upper Limit Frequency for Odor Prevention at Fan Speed ​​X" needs to consider not only condensate production but also ensure the reliable operation of the air conditioning system after increasing the frequency.

[0091] The preset odor prevention upper limit frequency can be determined through experimental testing. For example, by setting a very high frequency and waiting for it to run stably, it can be determined whether the indoor unit's air outlet temperature is too low (if the air outlet temperature is too low, cold air will blow into people and affect user comfort), whether the system exhaust pressure is too high (if the exhaust pressure exceeds the maximum pressure range allowed by the compressor, it will damage the compressor), and whether the operating current is too high (if the current is too high, the air conditioner controller will be overloaded and there is a risk of board burnout).

[0092] In one specific embodiment, the control unit corrects the compressor operating frequency of the air conditioner by: correcting the target operating frequency of the air conditioner compressor under the preset fan speed setting. The corrected target operating frequency of the compressor under the preset fan speed setting is equal to the sum of the current target operating frequency of the compressor under the preset fan speed setting and the preset anti-odor additional target frequency corresponding to the preset fan speed setting. That is, the corrected [X fan speed target operating frequency] = current target operating frequency + [X fan speed anti-odor additional target frequency (preset anti-odor additional target frequency corresponding to the preset fan speed setting)]. The preset anti-odor additional target frequency corresponding to the preset fan speed setting is, under different fan speed settings, the additional target frequency added to the compressor operating target frequency under that fan speed setting in order to suppress odors, in Hz, and its value range includes, for example, 0 to 20 Hz.

[0093] The target operating frequency of the air conditioner compressor under the preset fan speed is corrected by adding an additional frequency to the target operating frequency of the compressor under different fan speeds. The value of the additional target frequency for odor prevention under fan speed X needs to take into account the generation of condensate water, and also needs to ensure the reliable operation of the air conditioning system after the frequency is increased.

[0094] The modified target operating frequency of the compressor under the preset fan speed should be lower than the modified maximum operating frequency of the compressor under the preset fan speed. If the modified target operating frequency of the compressor under the preset fan speed is higher than the modified maximum operating frequency of the compressor under the preset fan speed, then the modified target operating frequency of the compressor under the preset fan speed is directly taken as the value of the modified maximum operating frequency of the compressor under the preset fan speed. That is, the modified target operating frequency of the compressor under the preset fan speed is equal to the modified maximum operating frequency of the compressor under the preset fan speed.

[0095] The target frequency is the frequency that the compressor needs to reach during the period before it stabilizes (e.g., the initial frequency ramp-up phase after startup). A higher target frequency is more conducive to condensate production. However, the target frequency should not be pursued blindly; the reliability of the air conditioning system after increasing the frequency must also be considered. The preset anti-odor additional target frequency corresponding to the preset fan speed can be determined through experimental testing. Since the target frequency is during the period when the compressor is not stabilizing, parameters such as the air conditioning system's pressure, exhaust temperature, and operating current are still changing. If the changes are too rapid, the parameters will lag in reflecting to the controller, potentially causing control failure. Therefore, during testing, the main focus should be on whether the changes in parameters such as the air conditioning system's pressure, exhaust temperature, and operating current are too rapid and whether they can be effectively controlled.

[0096] Optionally, based on any of the above embodiments, the control unit 130 is further configured to: exit the odor prevention frequency correction control when the sum of the indoor heat exchanger temperature of the air conditioner and the first preset temperature difference threshold is less than the air dew point temperature or the compressor of the air conditioner stops for a continuous first preset time.

[0097] That is, continuous time α satisfies T 内管 +ΔT1<T 露点 If the compressor stops, the odor prevention frequency correction control will be discontinued. The first preset temperature difference threshold ΔT1 is the preset temperature difference for condensation on the indoor heat exchanger, in °C, and its range includes, for example, 0 °C to 8 °C. The first preset time α is the continuous condensation time of the indoor heat exchanger, in min, and its range includes, for example, 3 to 60 min.

[0098] If the continuous time interval α satisfies T 内管 +ΔT1<T 露点 This indicates that the indoor heat exchanger temperature is low and sufficient condensate has been produced, so the odor prevention frequency correction can be discontinued. If the compressor has stopped running, then the odor prevention frequency correction can be discontinued.

[0099] Optionally, based on any of the above embodiments, the control unit 130 is further configured to: after the compressor stops when the indoor ambient temperature reaches the set shutdown temperature, reduce the fan speed of the indoor fan of the air conditioner to a preset level. If the fan speed of the indoor fan is already at the lowest settable level (i.e., the lowest settable level), then maintain the current fan speed.

[0100] The preset setting refers to the number of settings to be reduced. For example, after the compressor stops at the set temperature, the indoor fan speed is reduced by one setting. When the indoor environment has reached (or fallen below) the user-set temperature, the compressor is usually stopped to save energy, while the indoor fan continues to blow air. When the fan speed is high, condensate is easily dried quickly. Stopping the fan can lead to poor air circulation, making the user feel stuffy. Therefore, the indoor fan speed is reduced at this stage. If the indoor fan is already at its lowest settable speed, the current speed is maintained.

[0101] Optionally, based on any of the above embodiments, the control unit 130 is further configured to: after the compressor stops when the indoor ambient temperature reaches the set shutdown temperature, control the compressor to restart when a second preset condition is met.

[0102] If the compressor is shut down for too long, the condensate on the indoor heat exchanger will easily dry out, so the compressor needs to be restarted before the condensate dries out. The second preset condition includes at least one of the following conditions, that is, when at least one of the following conditions is met, the control unit 130 controls the compressor to restart.

[0103] (1) The indoor heat exchanger temperature of the air conditioner is greater than or equal to the sum of the first preset temperature difference threshold and the air dew point temperature; that is, T 内管 ≥ΔT1+T 露点 The first preset temperature difference threshold ΔT1 is the preset temperature difference for condensation on the indoor heat exchanger, in °C, and its range includes, for example, 0 °C to 8 °C. Condensation only occurs when the indoor heat exchanger temperature is lower than the indoor air dew point temperature. Since sensor detection has errors (e.g., 0.5 °C), without setting a preset temperature difference for condensation, it would be difficult to determine whether condensation occurs when the indoor heat exchanger temperature is close to the indoor air dew point temperature. Increasing the preset temperature difference for condensation ensures that the indoor heat exchanger temperature is several degrees Celsius higher than the air dew point temperature, thus preventing condensation from forming.

[0104] After the compressor stops running, the refrigerant stops circulating, while the indoor fan continues to blow air, carrying away the cold energy stored in the indoor heat exchanger, causing the temperature of the indoor heat exchanger to gradually rise. If T is satisfied... 内管 ≥ΔT1+T 露点 This indicates that the indoor heat exchanger temperature has risen too much, and there is a risk that the condensate will be blown dry, so the compressor is restarted.

[0105] (2) The indoor ambient temperature is greater than or equal to the sum of the second preset temperature difference threshold and the set temperature of the air conditioner; that is, T 内环 ≥ΔT2+T 设定 The second preset temperature difference threshold is a preset temperature difference threshold between the indoor ambient temperature and the set temperature of the air conditioner.

[0106] When the indoor temperature is higher than the user's set temperature, the compressor is restarted to ensure a comfortable user experience.

[0107] (3) The compressor's shutdown time reaches the second preset time. The second preset time λ is the continuous shutdown time after the compressor reaches the temperature point and stops, in minutes, and its value range includes, for example, 3 to 60 minutes.

[0108] The compressor has been shut down for the longest time, and there is a risk that the condensate will be dried out, so the compressor is restarted.

[0109] During cooling operation, the air conditioner controlled by the solution of this invention can effectively suppress the odor from the air conditioner and improve the user experience by correcting the target frequency and upper limit frequency of operation during periods when odors are likely to be generated and adjusting the compressor shutdown time.

[0110] For example, a comparative test is conducted on a 3P variable frequency air conditioner using a control method from related technologies and the odor-prevention control method of this invention. One possible value for the odor-prevention control parameter of this invention is: ΔT 预设温差 =5℃, X fan speed (preset fan speed) = high fan speed, medium fan speed, low fan speed or silent mode, T 外环预设1 =32℃, T 外环预设2 =40℃, T 内环预设 =28℃, ΔT1=3℃, α=10min, ΔT2=1℃, λ=15min, [X-mode odor prevention upper limit frequency (preset odor prevention upper limit frequency corresponding to preset mode)] is shown in Table 1 below, [X-mode odor prevention target frequency (preset odor prevention target frequency corresponding to preset mode)] is shown in Table 2 below.

[0111] Additional upper limit frequency [Silent mode prevents odors and includes a frequency limit] 4Hz [Low fan speed to prevent odors, plus frequency limit] 6Hz [Mid-range odor prevention with additional frequency limit] 8Hz [High-speed fan prevents odors and has an additional frequency limit] 10Hz

[0112] Table 1

[0113] Additional target frequency [Silent mode prevents odors and includes target frequency] 2Hz [Low fan speed to prevent odors, plus target frequency] 4Hz [Mid-stroke odor prevention with additional target frequency] 6Hz [High-speed fan prevents odors and includes target frequency] 8Hz

[0114] Table 2

[0115] Table 3 compares the odor control method of the present invention with the conventional control method in related technologies in terms of whether there is an odor during compressor operation and shutdown. Compared with the conventional control method in related technologies, the odor control method of the present invention has no odor under different set temperatures, different internal fan speeds, and different operating periods, effectively suppressing the odor from the air conditioner and improving the user experience.

[0116]

[0117] Table 3

[0118] The present invention also provides a storage medium corresponding to the control method of the air conditioner, wherein a computer program is stored thereon, and the program, when executed by a processor, implements the steps of any of the aforementioned methods.

[0119] The present invention also provides an air conditioner corresponding to the control method of the air conditioner, comprising a processor, a memory, and a computer program stored in the memory that can run on the processor, wherein the processor executes the program to implement the steps of any of the aforementioned methods.

[0120] The present invention also provides an air conditioner corresponding to the control device of the air conditioner, including the control device of any of the aforementioned air conditioners.

[0121] Accordingly, the solution provided by this invention corrects the upper limit of the compressor's operating frequency and the target operating frequency of the compressor under operating parameter conditions that are prone to generating odors, ensuring that it can produce condensate and thus preventing odors. During the compressor shutdown phase, odor prevention is achieved by controlling the switching of the indoor fan's fan speed and the shutdown duration. This effectively suppresses odors from the air conditioner and improves the user experience.

[0122] The functions described herein can be implemented in hardware, software executed by a processor, firmware, or any combination thereof. If implemented in software executed by a processor, the functions can be stored as one or more instructions or codes on or transmitted via a computer-readable medium. Other examples and embodiments are within the scope and spirit of this invention and the appended claims. For example, due to the nature of software, the functions described above can be implemented using software executed by a processor, hardware, firmware, hardwired, or any combination thereof. Furthermore, the functional units can be integrated into a single processing unit, or each unit can exist physically separately, or two or more units can be integrated into a single unit.

[0123] In the several embodiments provided in this application, it should be understood that the disclosed technical content can be implemented in other ways. The device embodiments described above are merely illustrative; for example, the division of units can be a logical functional division, and in actual implementation, there may be other division methods. For instance, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the displayed or discussed mutual coupling, direct coupling, or communication connection may be through some interfaces; the indirect coupling or communication connection between units or modules may be electrical or other forms.

[0124] The units described as separate components may or may not be physically separate. Similarly, the components of the control device may or may not be physical units; they may be located in one place or distributed across multiple units. Some or all of the units can be selected to achieve the purpose of this embodiment, depending on actual needs.

[0125] If the integrated unit is implemented as a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention, in essence, or the part that contributes to related technologies, or all or part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of the present invention. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, read-only memory (ROM), random access memory (RAM), portable hard drives, magnetic disks, or optical disks.

[0126] The above description is merely an embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of the claims of the present invention.

Claims

1. A method for controlling an air conditioner, characterized in that, include: When the air conditioner is in cooling mode, the indoor ambient temperature, outdoor ambient temperature, indoor air dew point temperature, as well as the air conditioner's set temperature, indoor fan speed, and indoor heat exchanger temperature are acquired. Determine whether the obtained indoor ambient temperature, outdoor ambient temperature, indoor air dew point temperature, and the set temperature of the air conditioner, the fan speed of the indoor fan, and the temperature of the indoor heat exchanger meet the first preset condition. The first preset condition includes: The temperature difference between the indoor ambient temperature and the set temperature of the air conditioner is less than or equal to the preset temperature difference; the preset temperature difference is the preset temperature difference between the indoor ambient temperature and the set temperature of the air conditioner. The internal fan's airflow setting is a preset airflow setting; the preset airflow setting is the airflow setting that is prone to producing odors. The outdoor ambient temperature is less than or equal to the first preset outdoor ambient temperature threshold or greater than or equal to the second preset outdoor ambient temperature threshold. The indoor ambient temperature is less than or equal to the preset indoor ambient temperature threshold. The indoor heat exchanger temperature is greater than or equal to the sum of the first preset temperature difference threshold and the indoor air dew point temperature; If the first preset condition is met, then the odor prevention frequency correction control is entered to correct the operating frequency of the air conditioner's compressor to prevent odor generation, including: The modified maximum operating frequency of the compressor under the preset fan speed is equal to the sum of the current maximum operating frequency of the compressor under the preset fan speed and the preset additional upper limit frequency for odor prevention corresponding to the preset fan speed. And / or, The corrected compressor operating target frequency under the preset fan speed is equal to the sum of the compressor operating target frequency under the current preset fan speed and the preset anti-odor additional target frequency corresponding to the preset fan speed.

2. The method according to claim 1, characterized in that, Also includes: When the sum of the indoor heat exchanger temperature and the first preset temperature difference threshold of the air conditioner is less than the indoor air dew point temperature or the compressor of the air conditioner stops for a continuous first preset time, the odor prevention frequency correction control is exited.

3. The method according to claim 1 or 2, characterized in that, Also includes: After the compressor stops when the indoor ambient temperature reaches the set shutdown temperature, the fan speed of the air conditioner's indoor fan is reduced to a preset level. And / or, After the compressor stops when the indoor ambient temperature reaches the set shutdown temperature, the compressor is restarted when the second preset condition is met. The second preset condition includes at least one of the following conditions: The indoor heat exchanger temperature of the air conditioner is greater than or equal to the sum of the first preset temperature difference threshold and the indoor air dew point temperature. The indoor ambient temperature is greater than or equal to the sum of the second preset temperature difference threshold and the set temperature of the air conditioner; The compressor is shut down for a period of time that reaches the second preset time.

4. A control device for an air conditioner, characterized in that, include: The acquisition unit is used to acquire the indoor ambient temperature, outdoor ambient temperature, indoor air dew point temperature, and the set temperature, indoor fan speed, and indoor heat exchanger temperature of the air conditioner when the air conditioner is in cooling mode. The judgment unit is used to determine whether the indoor ambient temperature, outdoor ambient temperature, indoor air dew point temperature, and the set temperature of the air conditioner, the fan speed of the indoor fan, and the temperature of the indoor heat exchanger obtained by the acquisition unit meet the first preset condition. The first preset condition includes: The temperature difference between the indoor ambient temperature and the set temperature of the air conditioner is less than or equal to the preset temperature difference; the preset temperature difference is the preset temperature difference between the indoor ambient temperature and the set temperature of the air conditioner. The internal fan's airflow setting is a preset airflow setting; the preset airflow setting is the airflow setting that is prone to producing odors. The outdoor ambient temperature is less than or equal to the first preset outdoor ambient temperature threshold or greater than or equal to the second preset outdoor ambient temperature threshold. The indoor ambient temperature is less than or equal to the preset indoor ambient temperature threshold. The indoor heat exchanger temperature is greater than or equal to the sum of the first preset temperature difference threshold and the indoor air dew point temperature; The control unit is configured to, if the judgment unit determines that the first preset condition is met, enter odor prevention frequency correction control to correct the operating frequency of the air conditioner's compressor to prevent odor generation, including: The modified maximum operating frequency of the compressor under the preset fan speed is equal to the sum of the current maximum operating frequency of the compressor under the preset fan speed and the preset additional upper limit frequency for odor prevention corresponding to the preset fan speed. And / or, The corrected compressor operating target frequency under the preset fan speed is equal to the sum of the compressor operating target frequency under the current preset fan speed and the preset anti-odor additional target frequency corresponding to the preset fan speed.

5. A storage medium, characterized in that, It stores a computer program that, when executed by a processor, implements the steps of the method according to any one of claims 1-3.

6. An air conditioner, characterized in that, The air conditioner includes a processor, a memory, and a computer program stored in the memory that can run on the processor. When the processor executes the program, it implements the steps of the method according to any one of claims 1-3. Alternatively, the air conditioner includes a control device as described in claim 4.

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