Air conditioner defrosting control method, device and equipment based on double-fan machine, storage medium and air conditioner

Abstract

This invention provides a defrosting control method, apparatus, device, storage medium, and air conditioner based on a dual-fan unit, relating to the field of air conditioner technology. The embodiments provided by this invention determine the first operating time of the air conditioner by acquiring the outdoor ambient temperature during air conditioner operation; based on the outdoor ambient temperature and the first operating time, it is determined whether the current defrosting conditions of the air conditioner meet the pre-defrosting conditions; if the current defrosting conditions meet the pre-defrosting conditions, the first fan speed and the second fan speed are acquired; it is determined whether the current defrosting conditions of the air conditioner meet the target defrosting conditions; if the current defrosting conditions meet the target defrosting conditions, the air conditioner is controlled to perform defrosting. The embodiments provided by this invention determine the optimal defrosting time by using fan speed to determine whether the target defrosting conditions are met, thereby improving the heating efficiency of the air conditioner.

Description

Technical Field

[0001] This invention relates to the field of air conditioner technology, and in particular to an air conditioner defrosting control method, device, equipment, storage medium, and air conditioner based on a dual-fan unit. Background Technology

[0002] An air conditioner, as a device that regulates indoor temperature, works by circulating refrigerant through high-pressure / low-pressure / gas / liquid states to lower or raise the indoor temperature. From the perspective of the indoor unit, the air conditioner is in cooling or heating mode. When the air conditioner is in heating mode, under certain humidity conditions, if the outdoor coil temperature is too low, frost will form. Frost on the outdoor coil reduces the heat exchange efficiency of the outdoor heat exchanger, affecting the air conditioner's heating effect, reducing indoor comfort, and impacting user experience. Therefore, when the air conditioner is in heating mode, timely and effective defrosting of the outdoor coil is necessary.

[0003] In existing technologies, the defrosting timing of air conditioners is usually determined by using the defrost coil sensor corresponding to each fan unit to detect the frost thickness, thereby determining the defrosting timing. However, for multi-fan units, such as dual-fan air conditioners, some manufacturers, in order to save costs, only configure one defrost coil sensor to determine the defrosting timing.

[0004] However, dual-fan air conditioners inevitably experience uneven heat exchange due to differences in outdoor unit piping design and air resistance. During heating, the frost thickness behind the two fans may differ, for example, the upper fan may have thinner frost while the lower fan has thicker frost. If only one defrost coil sensor is installed at the upper fan, and the frost level on the upper fan hasn't yet triggered the defrost mechanism compared to the defrost thickness threshold, while the lower fan already has a very thick frost layer, it will significantly impact the air conditioner's heating efficiency. Conversely, setting the defrost thickness threshold too low will lead to frequent defrosting, also significantly affecting heating efficiency.

[0005] Therefore, determining the optimal defrosting time is a pressing technical problem for multi-fan machines, especially dual-fan machines. Summary of the Invention

[0006] This invention provides a defrosting control method, apparatus, equipment, storage medium, and air conditioner based on a dual-fan air conditioner. It addresses the shortcomings of existing technologies where the accuracy of determining the defrosting timing is low, leading to low heating efficiency, when performing defrosting control on dual-fan air conditioners with only one defrosting sensor. The invention utilizes fan speed to determine whether the target defrosting conditions are met, thereby determining the optimal defrosting timing and performing defrosting at the optimal time, thus improving the heating efficiency of the air conditioner.

[0007] In a first aspect, the present invention provides a defrosting control method for an air conditioner based on a dual-fan unit, applied to an air conditioner, the air conditioner comprising at least an outdoor unit and an indoor unit; the outdoor unit comprising at least a first fan, a second fan, an outdoor coil temperature sensor, and an outdoor ambient temperature sensor, the outdoor coil temperature sensor being disposed at the coil of the second fan; the defrosting control method for the air conditioner based on a dual-fan unit includes: The outdoor ambient temperature during the operation of the air conditioner is obtained using the outdoor ambient temperature sensor, and the first operating time of the air conditioner is determined. Based on the outdoor ambient temperature and the first operating time, it is determined whether the current defrosting conditions of the air conditioner meet the pre-defrosting conditions; If it is determined that the current defrosting conditions meet the pre-defrosting conditions, the first fan speed of the first fan and the second fan speed of the second fan are obtained. Based on the wind speed of the first fan and the wind speed of the second fan, determine whether the current defrosting conditions of the air conditioner meet the target defrosting conditions; If it is determined that the current defrosting conditions of the air conditioner meet the target defrosting conditions, the air conditioner is controlled to perform defrosting. The first running time is the duration during which the air conditioner operates when the outdoor ambient temperature is less than a first preset temperature threshold; the pre-defrosting condition is the condition for obtaining the fan speed; and the target defrosting condition is the condition for controlling the air conditioner to perform defrosting.

[0008] Preferably, the defrosting control method for an air conditioner based on a dual-fan unit provided by the present invention... The step of determining whether the current defrosting conditions of the air conditioner meet the pre-defrosting conditions based on the outdoor ambient temperature and the first operating time includes: The outdoor ambient temperature is compared with a first preset temperature threshold, and the first running time is compared with a preset duration threshold. When the outdoor ambient temperature is less than a first preset temperature threshold and the first running time is greater than or equal to a preset time threshold, the external coil temperature at the second fan coil unit is collected using the external coil temperature sensor. Based on the analysis results of the external coil temperature and the second preset temperature threshold, it is determined whether the current defrosting conditions of the air conditioner meet the pre-defrosting conditions.

[0009] Preferably, according to the defrosting control method for an air conditioner based on a dual-fan unit provided by the present invention, the step of determining whether the current defrosting conditions of the air conditioner meet the pre-defrosting conditions based on the analysis results of analyzing the temperature of the external coil and a second preset temperature threshold includes: If the temperature of the external coil is less than the second preset temperature threshold, it is determined that the current defrosting condition of the air conditioner meets the pre-defrosting condition. If the external coil temperature is greater than or equal to the second preset temperature threshold, it is determined that the current defrosting conditions of the air conditioner do not meet the pre-defrosting conditions.

[0010] Preferably, according to the defrosting control method for an air conditioner based on a dual-fan unit provided by the present invention, determining whether the current defrosting conditions of the air conditioner meet the target defrosting conditions based on the wind speed of the first fan and the wind speed of the second fan includes: Compare whether the wind speeds of the first fan and the second fan are the same; If the first fan speed and the second fan speed are determined to be the same, the first fan speed and the second fan speed of the air conditioner are increased respectively to the target fan speed and the air conditioner is run for a second running time. In this state, it is determined that the current defrosting conditions of the air conditioner meet the target defrosting conditions. The target fan speed is determined based on the set indoor temperature. If the wind speeds of the first fan and the second fan are different, it is determined that the current defrosting conditions of the air conditioner do not meet the target defrosting conditions.

[0011] Preferably, according to the defrosting control method for an air conditioner based on a dual-fan unit provided by the present invention, after determining that the current defrosting conditions of the air conditioner do not meet the target defrosting conditions, the method further includes: If the wind speed of the first fan is greater than the wind speed of the second fan, keep the wind speed of the first fan unchanged, increase the wind speed of the second fan to the wind speed of the first fan, and run for the second running time. When the wind speed of the first fan is less than that of the second fan, the wind speed of the second fan is kept constant, the wind speed of the first fan is increased to that of the second fan, and the second running time is maintained.

[0012] Preferably, in the defrosting control method for an air conditioner based on a dual-fan unit provided by the present invention, the target fan speed is determined according to the set indoor temperature, including: Obtain the actual indoor temperature of the air conditioner; When the actual indoor temperature reaches the set indoor temperature, the second fan speed corresponding to the actual indoor temperature is increased by a preset speed to obtain the target fan speed.

[0013] Secondly, the present invention also provides a defrosting control device for an air conditioner based on a dual-fan unit, applied to an air conditioner, the air conditioner comprising at least an outdoor unit and an indoor unit; the outdoor unit comprising at least a first fan, a second fan, an outdoor coil temperature sensor, and an outdoor ambient temperature sensor, the outdoor coil temperature sensor being disposed at the coil of the second fan; the defrosting control device for the air conditioner based on a dual-fan unit includes: The acquisition module is used to acquire the outdoor ambient temperature during the operation of the air conditioner using the outdoor ambient temperature sensor, and to determine the first operating time of the air conditioner. The first judgment module is used to determine whether the current defrosting conditions of the air conditioner meet the pre-defrosting conditions based on the outdoor ambient temperature and the first running time. The determination module is used to obtain the first fan speed of the first fan and the second fan speed of the second fan when it is determined that the current defrosting conditions meet the pre-defrosting conditions. The second judgment module is used to determine whether the current defrosting conditions of the air conditioner meet the target defrosting conditions based on the wind speed of the first fan and the wind speed of the second fan. The defrosting control module is used to control the air conditioner to perform defrosting when it is determined that the current defrosting conditions of the air conditioner meet the target defrosting conditions; the first running time is the duration for which the air conditioner runs when the outdoor ambient temperature is less than a first preset temperature threshold; the pre-defrosting condition is the condition for obtaining the fan speed, and the target defrosting condition is the condition for controlling the air conditioner to perform defrosting.

[0014] Thirdly, the present invention also provides an electronic device, including a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the program to implement the defrosting control method for an air conditioner based on a dual-fan unit as described above.

[0015] Fourthly, the present invention also provides a non-transitory computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the defrosting control method for an air conditioner based on a dual-fan unit as described above.

[0016] Fifthly, the present invention also provides a computer program product, including a computer program that, when executed by a processor, implements the defrosting control method for an air conditioner based on a dual-fan unit as described above.

[0017] In a sixth aspect, the present invention also provides an air conditioner, comprising at least a controller, an outdoor unit, and an indoor unit; the outdoor unit comprises at least a first fan, a second fan, an external coil temperature sensor, and an outdoor ambient temperature sensor, wherein the external coil temperature sensor is disposed at the coil of the second fan, and the controller, when executed, implements the defrosting control method for an air conditioner based on dual fans as described above.

[0018] This invention provides a defrosting control method, apparatus, device, storage medium, and air conditioner based on a dual-fan air conditioner. The method utilizes an outdoor ambient temperature sensor to acquire the outdoor ambient temperature during air conditioner operation and determines a first operating time for the air conditioner. Based on the outdoor ambient temperature and the first operating time, it determines whether the current defrosting conditions of the air conditioner meet pre-defrosting conditions. If the current defrosting conditions meet the pre-defrosting conditions, it acquires a first fan speed of the first fan and a second fan speed of the second fan. Based on the first and second fan speeds, it determines whether the current defrosting conditions of the air conditioner meet target defrosting conditions. If the current defrosting conditions meet the target defrosting conditions, it controls the air conditioner to perform defrosting. The first operating time is the duration the air conditioner operates when the outdoor ambient temperature is lower than a first preset temperature threshold. The pre-defrosting conditions are the conditions for acquiring the fan speeds, and the target defrosting conditions are the conditions for controlling the air conditioner to perform defrosting. This technology addresses the shortcomings of existing dual-fan air conditioners with only one defrost sensor, where the accuracy of defrosting timing is low, leading to low heating efficiency. It utilizes fan speed to determine whether target defrosting conditions are met, thereby identifying the optimal defrosting time and performing defrosting at the optimal moment to improve the air conditioner's heating efficiency. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in this invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0020] Figure 1 This is one of the flowcharts illustrating the defrosting control method for an air conditioner based on a dual-fan unit provided by the present invention.

[0021] Figure 2 This is the second flowchart of the defrosting control method for an air conditioner based on a dual-fan unit provided by the present invention.

[0022] Figure 3This is a schematic diagram of the defrosting control device for an air conditioner based on a dual-fan motor provided by the present invention.

[0023] Figure 4 This is a schematic diagram of the structure of the electronic device provided by the present invention. Detailed Implementation

[0024] 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 with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this invention. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without creative effort are within the scope of protection of this invention.

[0025] First, let's analyze some of the terms used in this invention: Frosting principle: When the surface temperature of the air conditioner evaporator is lower than the dew point temperature, the moisture in the air condenses and accumulates into frost. It is mainly affected by the evaporator temperature and air humidity.

[0026] Areas prone to frost buildup: The evaporator is the most prone to frost buildup. The indoor unit's air inlet and panel are also prone to frost buildup.

[0027] Consequences of Frosting: Frosting affects the evaporator by increasing thermal resistance due to the frost layer, and by obstructing airflow, thus increasing resistance to airflow through the evaporator. Based on fan characteristics, increased resistance leads to reduced airflow, which in turn decreases the surface heat transfer coefficient and increases energy consumption. The reduced airflow caused by frost is a major factor contributing to the deterioration of system operation.

[0028] In the relevant technologies, at least the following technical problems exist: In existing technologies, the defrosting timing of air conditioners is usually determined by using the defrost coil sensor corresponding to each fan unit to detect the frost thickness, thereby determining the defrosting timing. However, for multi-fan units, such as dual-fan air conditioners, some manufacturers, in order to save costs, only configure one defrost coil sensor to determine the defrosting timing.

[0029] However, dual-fan air conditioners inevitably experience uneven heat exchange due to differences in outdoor unit piping design and air resistance. During heating, the frost thickness behind the two fans may differ, for example, the upper fan may have thinner frost while the lower fan has thicker frost. If only one defrost coil sensor is installed at the upper fan, and the frost level on the upper fan hasn't yet triggered the defrost mechanism compared to the defrost thickness threshold, while the lower fan already has a very thick frost layer, it will significantly impact the air conditioner's heating efficiency. Conversely, setting the defrost thickness threshold too low will lead to frequent defrosting, also significantly affecting heating efficiency.

[0030] Therefore, determining the optimal defrosting time is a pressing technical problem for multi-fan machines, especially dual-fan machines.

[0031] Traditional defrosting method: This method, also known as reverse circulation defrosting or reversing defrosting, is a common defrosting method used in domestic household air conditioning systems. Its basic principle is to use a four-way reversing valve to absorb heat from the indoor unit and transfer it to the outdoor unit for defrosting. The main process is as follows: Air conditioner in heating mode → Defrosting required → Compressor stops → Four-way valve reverses → Compressor starts → Defrosting complete → Compressor stops → Four-way valve reverses → Compressor starts → Normal heating.

[0032] The disadvantages of this defrosting method are: 1. Poor room comfort during defrosting; 2. Long defrosting time; 3. Poor system reliability.

[0033] The following is combined Figures 1-4 This invention describes a defrosting control method, apparatus, device, storage medium, and air conditioner based on a dual-fan air conditioner. It addresses the shortcomings of existing technologies where, for dual-fan air conditioners with only one defrost sensor, the accuracy of determining the defrosting timing is low, leading to low heating efficiency. The invention utilizes fan speed to determine whether target defrosting conditions are met, thereby identifying the optimal defrosting timing and performing defrosting at the optimal time, thus improving the heating efficiency of the air conditioner.

[0034] Figure 1 This is one of the flowcharts illustrating a defrosting control method for an air conditioner based on a dual-fan unit provided by the present invention, as shown below. Figure 1 As shown, the method may include, but is not limited to, steps S100 to S500: S100, using the outdoor ambient temperature sensor to obtain the outdoor ambient temperature during the operation of the air conditioner, and to determine the first operating time of the air conditioner. S200, based on the outdoor ambient temperature and the first operating time, determine whether the current defrosting conditions of the air conditioner meet the pre-defrosting conditions; S300, if it is determined that the current defrosting conditions meet the pre-defrosting conditions, the first fan speed of the first fan and the second fan speed of the second fan are obtained. S400, based on the wind speed of the first fan and the wind speed of the second fan, determine whether the current defrosting conditions of the air conditioner meet the target defrosting conditions; S500: If it is determined that the current defrosting conditions of the air conditioner meet the target defrosting conditions, the air conditioner is controlled to perform defrosting.

[0035] In step S100 of some embodiments, the outdoor ambient temperature during the operation of the air conditioner is obtained using the outdoor ambient temperature sensor, and the first operating time of the air conditioner is determined.

[0036] Understandably, the outdoor ambient temperature sensor is located on the outdoor unit to detect the outdoor ambient temperature. After the air conditioner starts operating in heating mode, the outdoor ambient temperature is detected using the sensor.

[0037] The outdoor ambient temperature is compared with a first preset temperature threshold. The first preset temperature threshold is the temperature at which the air conditioner is prone to frost formation, and can be 10 degrees Celsius.

[0038] When the outdoor ambient temperature is greater than or equal to the first preset temperature threshold, it indicates that the outdoor ambient temperature is relatively high and frost is not likely to form.

[0039] When the outdoor ambient temperature is lower than the first preset temperature threshold, it indicates that the outdoor ambient temperature is relatively low and frost is likely to form. Since the outdoor ambient temperature is also dynamic, in order to improve the accuracy of determining the optimal defrosting time, the time when the outdoor ambient temperature is lower than the first preset temperature threshold is timed to obtain the first running time, which is the time when the timing starts when the outdoor ambient temperature is lower than the first preset temperature threshold.

[0040] In step S200 of some embodiments, based on the outdoor ambient temperature and the first operating time, it is determined whether the current defrosting conditions of the air conditioner meet the pre-defrosting conditions. Understandably, the first runtime is compared with a preset runtime threshold.

[0041] When the first running time is greater than or equal to the preset duration threshold, it indicates that the outdoor ambient temperature is consistently lower than the first preset temperature threshold, making it prone to frost formation.

[0042] When the first run time is less than the preset time threshold, it means that although there are short periods when the outdoor ambient temperature is prone to frost, the outdoor temperature changes rapidly, such as when the outdoor temperature rises, resulting in a high outdoor ambient temperature, so frost is not likely to form.

[0043] Furthermore, the preset duration threshold can be, but is not limited to, 30 minutes.

[0044] When the outdoor ambient temperature is less than a first preset temperature threshold and the first running time is greater than or equal to a preset duration threshold, the external coil temperature at the second fan coil unit is collected using the external coil temperature sensor.

[0045] When the outdoor ambient temperature is less than the first preset temperature threshold and the first operating time is greater than or equal to the preset duration threshold, it indicates that the air conditioner is prone to frost. In order to more accurately determine the defrosting time, the external coil temperature at the second fan coil unit is collected using an external coil temperature sensor.

[0046] It should be noted that the air conditioner of the present invention has a first fan and a second fan. An external coil temperature sensor is installed at the second fan to detect the temperature of the external coil at the second fan. The frost condition at the second fan can be determined based on the external coil temperature. However, the external coil temperature at the first fan cannot be determined, and therefore the frost condition at the first fan cannot be determined either.

[0047] It should be further noted that there are no further limitations on the positions of the first and second fans. The first fan can be positioned above or to the left of the second fan. Similarly, the second fan can be positioned above or to the left of the first fan.

[0048] Based on the analysis results of the external coil temperature and the second preset temperature threshold, it is determined whether the current defrosting conditions of the air conditioner meet the pre-defrosting conditions.

[0049] Furthermore, the external coil temperature is compared with the second preset temperature threshold.

[0050] If the temperature of the outer coil is greater than or equal to the second preset temperature threshold, it indicates that the temperature of the outer coil is relatively high, and at this time, frost is not easily formed at the second fan.

[0051] It should be noted that the second preset temperature threshold can be 0 degrees Celsius.

[0052] When the temperature of the external coil is lower than the second preset temperature threshold, the second fan is prone to frost formation. However, it is impossible to determine whether the first fan is prone to frost formation. If the air conditioner is rashly controlled to perform the defrost program simply because the second fan is prone to frost formation but the first fan is not actually frost formation, this will affect the heating efficiency and consume additional energy.

[0053] However, since frost easily forms at the second fan, if the external coil temperature is less than the second preset temperature threshold, it is determined whether the current defrosting conditions of the air conditioner meet the pre-defrosting conditions.

[0054] If the external coil temperature is greater than or equal to the second preset temperature threshold, it indicates that the external coil temperature is still relatively high, and it is not easy for frost to form. Therefore, if the external coil temperature is greater than or equal to the second preset temperature threshold, it is determined that the current defrosting condition of the air conditioner does not meet the pre-defrosting condition.

[0055] In step S300 of some embodiments, if it is determined that the current defrosting conditions meet the pre-defrosting conditions, the first fan speed of the first fan and the second fan speed of the second fan are obtained.

[0056] It is understandable that the pre-defrosting condition is the condition for obtaining the fan speed.

[0057] That is, when the temperature of the external coil is determined to be less than the second preset temperature threshold, the first fan speed of the first fan and the second fan speed of the second fan are obtained.

[0058] The first fan speed refers to the fan speed of the first fan under the current conditions, such as 80 revolutions per minute.

[0059] The second fan speed indicates the fan speed of the second fan under the current conditions, for example, 50 revolutions per minute.

[0060] In step S400 of some embodiments, based on the wind speed of the first fan and the wind speed of the second fan, it is determined whether the current defrosting conditions of the air conditioner meet the target defrosting conditions. It is understandable that the target defrosting condition is the condition that controls the air conditioner to perform defrosting.

[0061] Compare whether the wind speeds of the first fan and the second fan are the same; If the first fan speed and the second fan speed are determined to be the same, the first fan speed and the second fan speed of the air conditioner are increased respectively to the target fan speed and the air conditioner is run for a second running time. In this state, it is determined that the current defrosting conditions of the air conditioner meet the target defrosting conditions. The target fan speed is determined based on the set indoor temperature. If the wind speeds of the first fan and the second fan are different, it is determined that the current defrosting conditions of the air conditioner do not meet the target defrosting conditions.

[0062] Since the degree of frost formation at the first fan and the second fan is different, in order to more accurately determine the optimal time for defrosting, it is necessary to compare whether the wind speed of the first fan of the first fan and the wind speed of the second fan of the second fan are the same.

[0063] If the wind speeds of the first fan and the second fan are the same, it means that the degree of frost formation at the first fan and the second fan is the same. If the degree of frost formation is different, for example, the first fan has a thinner frost and the second fan has a thicker frost, then the wind speeds of the first fan and the second fan will definitely be different, with the second fan speed being less than the first fan speed.

[0064] Therefore, when the wind speeds of the first and second fans are determined to be the same, the wind speeds of both fans in the air conditioner are increased to the target fan speeds and run for a second operating period. In this state, it is determined that the current defrosting conditions of the air conditioner meet the target defrosting conditions. That is, at this time, the frost thickness of the first fan and the second fan is the same, which is the optimal defrosting time. Defrosting at this time can improve heating efficiency. This avoids a situation where the first fan does not meet the defrosting conditions, but the second fan does, yet defrosting is still performed, affecting heating efficiency.

[0065] To further improve the accuracy of determining the optimal defrosting time, the target fan speed is set according to the indoor temperature.

[0066] Furthermore, if it is determined that the wind speeds of the first fan and the second fan are different, it is determined that the current defrosting conditions of the air conditioner do not meet the target defrosting conditions.

[0067] The target defrosting condition is the optimal defrosting time, which is the time when the wind speed of the first fan and the wind speed of the second fan are the same. This indicates that the degree of frost on the first fan and the degree of frost on the second fan are the same.

[0068] After determining that the current defrosting conditions of the air conditioner do not meet the target defrosting conditions, the method further includes: If the wind speed of the first fan is greater than the wind speed of the second fan, keep the wind speed of the first fan unchanged, increase the wind speed of the second fan to the wind speed of the first fan, and run for the second running time.

[0069] If the wind speed of the first fan is greater than that of the second fan, it means that the degree of frost on the first fan is less than that of the second fan. Keeping the wind speed of the first fan constant and increasing the wind speed of the second fan to be the same as that of the first fan, and running it for a second running time, will make the wind speeds of the first fan and the second fan the same, that is, the degree of frost on the first fan and the second fan are the same. This is the best time to defrost.

[0070] This is because the first fan has less frost and higher heating efficiency, while the second fan has more frost and lower heating efficiency. Increasing the fan speed of the second fan will improve its heating efficiency to the same level as the first fan, which is the optimal time for defrosting.

[0071] Similarly, when the wind speed of the first fan is lower than that of the second fan, the wind speed of the second fan is kept constant, the wind speed of the first fan is increased to that of the second fan, and the second running time is maintained so that the degree of frost on the first fan is the same as that on the second fan. This is the optimal time for defrosting.

[0072] By obtaining the actual indoor temperature of the air conditioner, and when the actual indoor temperature reaches the set indoor temperature, the fan speed of the second fan corresponding to the actual indoor temperature is increased by a preset speed to obtain the target fan speed. In this way, it can be ensured that the indoor heating efficiency is high and the actual indoor temperature meets the user's set temperature at the optimal defrosting time. Therefore, the user experience can be improved during defrosting.

[0073] It should be further noted that the second run can last for 2 minutes.

[0074] In step S500 of some embodiments, if it is determined that the current defrosting conditions of the air conditioner meet the target defrosting conditions, the air conditioner is controlled to perform defrosting.

[0075] It is understandable that when it is determined that the current defrosting conditions of the air conditioner meet the target defrosting conditions, that is, when the optimal defrosting time is determined, the air conditioner is controlled to perform defrosting according to the preset defrosting program.

[0076] Furthermore, when the air conditioning control system receives a frosting signal from the outdoor unit and executes the defrosting procedure, the defrosting function is automatically activated: 1. The indoor and outdoor fan motors stop blowing air, and the air conditioning system directly switches to heating mode; 2. When operating in cooling mode, the indoor fan motor stops and the outdoor fan motor starts; 3. Defrosting complete (time setting and signal release), outdoor fan motor stops; 4. The air conditioning system directly switches from cooling to heating mode, and the outdoor fan motor starts; 5. The indoor motor will resume air supply once the indoor condenser reaches its basic temperature.

[0077] In embodiments of the present invention, ultrasonic defrosting can be performed: 1. The mechanical vibration of ultrasound is used to break down the ice crystal structure and melt the ice.

[0078] 2. Ultrasonic generator frequency 20-100kHz.

[0079] 3. The effect is affected by parameters such as frequency, sound pressure level, and propagation distance.

[0080] 4. Can be used in conjunction with hot air defrosting and electric heating.

[0081] In embodiments of the present invention, magnetic field defrosting can be performed: 1. Apply a magnetic field to the surface of the evaporator to change the structure of water molecules and inhibit frost formation.

[0082] 2. Coils are often used to generate alternating electromagnetic fields with frequencies of tens of hertz.

[0083] 3. It can also implant permanent magnetic materials to form a static magnetic field.

[0084] 4. Stable operation, no damage, and good anti-frost effect.

[0085] In embodiments of the present invention, nano-coating defrosting can be performed: 1. Nano-coatings can improve the surface structure of the evaporator and reduce the probability of frosting.

[0086] 2. Common examples include nano-silicone gel coatings.

[0087] 3. Nano-coatings can increase surface roughness and improve heat conduction.

[0088] 4. Anti-icing agents can also be added to improve the defrosting performance of the coating.

[0089] like Figure 2 The diagram shown is a second schematic of the defrosting control method for an air conditioner based on a dual-fan unit provided by the present invention. First, the dual-fan outdoor unit of the air conditioner operates normally. It determines whether the outdoor ambient temperature T1 is less than a first preset temperature threshold T0. If the outdoor ambient temperature is less than the first preset temperature threshold, it determines whether the outdoor coil temperature T2 is less than a second preset temperature threshold T3. If the outdoor coil temperature is less than the second preset temperature threshold, it acquires the first fan speed C1 of the first fan and the second fan speed C2 of the second fan, and determines whether the first fan speed and the second fan speed are the same. If they are the same, the first fan speed and the second fan speed are increased to improve heating efficiency. Then, the air conditioner is controlled to execute the defrosting procedure.

[0090] When the wind speeds of the first and second fans are different, by increasing the wind speed of the smaller fan, the degree of frost on the first and second fans can be made the same, thus determining the optimal defrosting time. Defrosting at the optimal time can improve the heating efficiency of the air conditioner.

[0091] In embodiments of the present invention, a step of exiting the defrost mode is also included. For example, after the air conditioner enters the defrost mode, the temperature of the outdoor coil of the air conditioner is detected. When the temperature of the outdoor coil is higher than the set temperature (which can be reasonably set by those skilled in the art according to the actual application scenario of the air conditioner), the continuous running time of the air conditioner in this state is detected. When the continuous running time is higher than a first preset time, for example, the continuous running time is higher than 20 seconds (or any time between 15 and 25 seconds), it can be determined that the frost layer on the outdoor coil has been completely removed. At this time, the air conditioner exits the defrost mode.

[0092] This invention provides a defrosting control method, apparatus, device, storage medium, and air conditioner based on a dual-fan air conditioner. The method utilizes an outdoor ambient temperature sensor to acquire the outdoor ambient temperature during air conditioner operation and determines a first operating time for the air conditioner. Based on the outdoor ambient temperature and the first operating time, it determines whether the current defrosting conditions of the air conditioner meet pre-defrosting conditions. If the current defrosting conditions meet the pre-defrosting conditions, it acquires a first fan speed of the first fan and a second fan speed of the second fan. Based on the first and second fan speeds, it determines whether the current defrosting conditions of the air conditioner meet target defrosting conditions. If the current defrosting conditions meet the target defrosting conditions, it controls the air conditioner to perform defrosting. The first operating time is the duration the air conditioner operates when the outdoor ambient temperature is lower than a first preset temperature threshold. The pre-defrosting conditions are the conditions for acquiring the fan speeds, and the target defrosting conditions are the conditions for controlling the air conditioner to perform defrosting. This technology addresses the shortcomings of existing dual-fan air conditioners with only one defrost sensor, where the accuracy of defrosting timing is low, leading to low heating efficiency. It utilizes fan speed to determine whether target defrosting conditions are met, thereby identifying the optimal defrosting time and performing defrosting at the optimal moment to improve the air conditioner's heating efficiency.

[0093] The defrosting control device for an air conditioner based on a dual-fan unit provided by the present invention will be described below. The defrosting control device for an air conditioner based on a dual-fan unit described below can be referred to in correspondence with the defrosting control method for an air conditioner based on a dual-fan unit described above.

[0094] Figure 3This is a schematic diagram of the structure of an air conditioner defrosting control device based on a dual-fan unit provided by the present invention. The device is applied to an air conditioner, which includes at least an outdoor unit and an indoor unit. The outdoor unit includes at least a first fan, a second fan, an outdoor coil temperature sensor, and an outdoor ambient temperature sensor. The outdoor coil temperature sensor is located at the coil of the second fan. The defrosting control device includes: The acquisition module 310 is used to acquire the outdoor ambient temperature during the operation of the air conditioner using the outdoor ambient temperature sensor, and to determine the first operating time of the air conditioner. The first judgment module 320 is used to determine whether the current defrosting conditions of the air conditioner meet the pre-defrosting conditions based on the outdoor ambient temperature and the first running time. The determination module 330 is used to obtain the first fan speed of the first fan and the second fan speed of the second fan when it is determined that the current defrosting conditions meet the pre-defrosting conditions. The second judgment module 340 is used to determine whether the current defrosting conditions of the air conditioner meet the target defrosting conditions based on the wind speed of the first fan and the wind speed of the second fan. The defrosting control module 350 is used to control the air conditioner to perform defrosting when it is determined that the current defrosting conditions of the air conditioner meet the target defrosting conditions; the first running time is the duration for which the air conditioner runs when the outdoor ambient temperature is less than a first preset temperature threshold; the pre-defrosting condition is the condition for obtaining the fan speed, and the target defrosting condition is the condition for controlling the air conditioner to perform defrosting.

[0095] Preferably, in the defrosting control device for an air conditioner based on a dual-fan unit provided by the present invention, the first judgment module 320 is specifically used to compare the outdoor ambient temperature with a first preset temperature threshold and to compare the first running time with a preset duration threshold. When the outdoor ambient temperature is less than a first preset temperature threshold and the first running time is greater than or equal to a preset time threshold, the external coil temperature at the second fan coil unit is collected using the external coil temperature sensor. Based on the analysis results of the external coil temperature and the second preset temperature threshold, it is determined whether the current defrosting conditions of the air conditioner meet the pre-defrosting conditions.

[0096] Preferably, in the defrosting control device for an air conditioner based on a dual-fan unit provided by the present invention, the first judgment module 320 is specifically used to determine whether the current defrosting condition of the air conditioner meets the pre-defrosting condition when the temperature of the external coil is less than the second preset temperature threshold. If the external coil temperature is greater than or equal to the second preset temperature threshold, it is determined that the current defrosting conditions of the air conditioner do not meet the pre-defrosting conditions.

[0097] Preferably, in the defrosting control device for an air conditioner based on a dual-fan unit provided by the present invention, the second judgment module 340 is specifically used to compare whether the wind speed of the first fan and the wind speed of the second fan are the same; If the first fan speed and the second fan speed are determined to be the same, the first fan speed and the second fan speed of the air conditioner are increased respectively to the target fan speed and the air conditioner is run for a second running time. In this state, it is determined that the current defrosting conditions of the air conditioner meet the target defrosting conditions. The target fan speed is determined based on the set indoor temperature. If the wind speeds of the first fan and the second fan are different, it is determined that the current defrosting conditions of the air conditioner do not meet the target defrosting conditions.

[0098] Preferably, the defrosting control device for an air conditioner based on a dual-fan motor provided by the present invention is further configured to, when the wind speed of the first fan is greater than the wind speed of the second fan, maintain the wind speed of the first fan unchanged, increase the wind speed of the second fan to the wind speed of the first fan, and run the second running time. When the wind speed of the first fan is less than that of the second fan, the wind speed of the second fan is kept constant, the wind speed of the first fan is increased to that of the second fan, and the second running time is maintained.

[0099] Preferably, according to the defrosting control device for an air conditioner based on a dual-fan unit provided by the present invention, the actual indoor temperature of the air conditioner is obtained; When the actual indoor temperature reaches the set indoor temperature, the second fan speed corresponding to the actual indoor temperature is increased by a preset speed to obtain the target fan speed.

[0100] This invention provides a defrosting control method, apparatus, device, storage medium, and air conditioner based on a dual-fan air conditioner. The method utilizes an outdoor ambient temperature sensor to acquire the outdoor ambient temperature during air conditioner operation and determines a first operating time for the air conditioner. Based on the outdoor ambient temperature and the first operating time, it determines whether the current defrosting conditions of the air conditioner meet pre-defrosting conditions. If the current defrosting conditions meet the pre-defrosting conditions, it acquires a first fan speed of the first fan and a second fan speed of the second fan. Based on the first and second fan speeds, it determines whether the current defrosting conditions of the air conditioner meet target defrosting conditions. If the current defrosting conditions meet the target defrosting conditions, it controls the air conditioner to perform defrosting. The first operating time is the duration the air conditioner operates when the outdoor ambient temperature is lower than a first preset temperature threshold. The pre-defrosting conditions are the conditions for acquiring the fan speeds, and the target defrosting conditions are the conditions for controlling the air conditioner to perform defrosting. This technology addresses the shortcomings of existing dual-fan air conditioners with only one defrost sensor, where the accuracy of defrosting timing is low, leading to low heating efficiency. It utilizes fan speed to determine whether target defrosting conditions are met, thereby identifying the optimal defrosting time and performing defrosting at the optimal moment to improve the air conditioner's heating efficiency.

[0101] Figure 4 An example is a schematic diagram of the physical structure of an electronic device, such as... Figure 4As shown, the electronic device may include: a processor 410, a communications interface 420, a memory 430, and a communications bus 440, wherein the processor 410, the communications interface 420, and the memory 430 communicate with each other through the communications bus 440. The processor 410 can call logic instructions in the memory 430 to execute a defrosting control method for an air conditioner based on a dual-fan unit. This method includes: acquiring the outdoor ambient temperature during air conditioner operation using the outdoor ambient temperature sensor, and determining a first operating time for the air conditioner; determining whether the current defrosting conditions of the air conditioner meet pre-defrosting conditions based on the outdoor ambient temperature and the first operating time; if the current defrosting conditions meet the pre-defrosting conditions, acquiring a first fan speed of the first fan and a second fan speed of the second fan; determining whether the current defrosting conditions of the air conditioner meet target defrosting conditions based on the first fan speed and the second fan speed; and controlling the air conditioner to perform defrosting if the current defrosting conditions meet the target defrosting conditions. The first operating time is the duration the air conditioner operates when the outdoor ambient temperature is less than a first preset temperature threshold; the pre-defrosting conditions are the conditions for acquiring the fan speed, and the target defrosting conditions are the conditions for controlling the air conditioner to perform defrosting.

[0102] Furthermore, the logical instructions in the aforementioned memory 430 can be implemented as software functional units and, when sold or used as independent products, can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention, or the part that contributes to the prior art, or a 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, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0103] On the other hand, the present invention also provides a computer program product, which includes a computer program that can be stored on a non-transitory computer-readable storage medium. When the computer program is executed by a processor, the computer can execute the defrosting control method for an air conditioner based on a dual-fan unit provided by the above methods. This method includes: acquiring the outdoor ambient temperature during air conditioner operation using the outdoor ambient temperature sensor, and determining a first operating time of the air conditioner; determining, based on the outdoor ambient temperature and the first operating time, whether the current defrosting conditions of the air conditioner meet the pre-defrosting conditions; and determining whether the current defrosting conditions meet the pre-defrosting conditions. Under the pre-defrosting conditions, the first fan speed of the first fan and the second fan speed of the second fan are obtained; based on the first fan speed and the second fan speed, it is determined whether the current defrosting conditions of the air conditioner meet the target defrosting conditions; if it is determined that the current defrosting conditions of the air conditioner meet the target defrosting conditions, the air conditioner is controlled to perform defrosting; the first running time is the duration for which the air conditioner operates when the outdoor ambient temperature is less than a first preset temperature threshold; the pre-defrosting conditions are the conditions for obtaining the fan speed, and the target defrosting conditions are the conditions for controlling the air conditioner to perform defrosting.

[0104] In another aspect, the present invention also provides a non-transitory computer-readable storage medium storing a computer program thereon, which, when executed by a processor, implements the defrosting control method for an air conditioner based on a dual-fan unit provided by the methods described above. This method includes: acquiring the outdoor ambient temperature during air conditioner operation using the outdoor ambient temperature sensor, and determining a first operating time of the air conditioner; determining, based on the outdoor ambient temperature and the first operating time, whether the current defrosting conditions of the air conditioner meet pre-defrosting conditions; if the current defrosting conditions meet the pre-defrosting conditions, acquiring a first fan speed of the first fan unit and a second fan speed of the second fan unit; determining, based on the first fan speed and the second fan speed, whether the current defrosting conditions of the air conditioner meet target defrosting conditions; and if the current defrosting conditions of the air conditioner meet the target defrosting conditions, controlling the air conditioner to perform defrosting; the first operating time is the duration during which the air conditioner operates when the outdoor ambient temperature is less than a first preset temperature threshold; the pre-defrosting conditions are the conditions for acquiring the fan speed, and the target defrosting conditions are the conditions for controlling the air conditioner to perform defrosting.

[0105] The device embodiments described above are merely illustrative. The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the modules can be selected to achieve the purpose of this embodiment according to actual needs. Those skilled in the art can understand and implement this without any creative effort.

[0106] Through the above description of the embodiments, those skilled in the art can clearly understand that each embodiment can be implemented by means of software plus necessary general-purpose hardware platforms, and of course, it can also be implemented by hardware. Based on this understanding, the above technical solutions, in essence or the part that contributes to the prior art, can be embodied in the form of a software product. This computer software product can be stored in a computer-readable storage medium, such as ROM / RAM, magnetic disk, optical disk, etc., and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute the methods described in the various embodiments or some parts of the embodiments.

[0107] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A defrosting control method for an air conditioner based on a dual-fan unit, characterized in that, The method is applied to an air conditioner, which includes at least an outdoor unit and an indoor unit; the outdoor unit includes at least a first fan, a second fan, an outdoor coil temperature sensor, and an outdoor ambient temperature sensor, wherein the outdoor coil temperature sensor is disposed at the coil of the second fan; the defrosting control method for the air conditioner based on dual fans includes: The outdoor ambient temperature during the operation of the air conditioner is obtained using the outdoor ambient temperature sensor, and the first operating time of the air conditioner is determined. Based on the outdoor ambient temperature and the first operating time, determine whether the current defrosting conditions of the air conditioner meet the pre-defrosting conditions; If it is determined that the current defrosting conditions meet the pre-defrosting conditions, the first fan speed of the first fan and the second fan speed of the second fan are obtained. Based on the wind speed of the first fan and the wind speed of the second fan, determine whether the current defrosting conditions of the air conditioner meet the target defrosting conditions; If it is determined that the current defrosting conditions of the air conditioner meet the target defrosting conditions, the air conditioner is controlled to perform defrosting. The first running time is the duration during which the air conditioner operates when the outdoor ambient temperature is less than a first preset temperature threshold; the pre-defrosting condition is the condition for obtaining the fan speed; and the target defrosting condition is the condition for controlling the air conditioner to perform defrosting.

2. The defrosting control method for an air conditioner based on a dual-fan unit according to claim 1, characterized in that, The step of determining whether the current defrosting conditions of the air conditioner meet the pre-defrosting conditions based on the outdoor ambient temperature and the first operating time includes: The outdoor ambient temperature is compared with a first preset temperature threshold, and the first running time is compared with a preset duration threshold. When the outdoor ambient temperature is less than a first preset temperature threshold and the first running time is greater than or equal to a preset time threshold, the external coil temperature at the second fan coil unit is collected using the external coil temperature sensor. Based on the analysis results of the external coil temperature and the second preset temperature threshold, it is determined whether the current defrosting conditions of the air conditioner meet the pre-defrosting conditions.

3. The defrosting control method for an air conditioner based on a dual-fan unit according to claim 2, characterized in that, The step of determining whether the current defrosting conditions of the air conditioner meet the pre-defrosting conditions based on the analysis results of the external coil temperature and the second preset temperature threshold includes: If the temperature of the external coil is less than the second preset temperature threshold, it is determined that the current defrosting condition of the air conditioner meets the pre-defrosting condition. If the external coil temperature is greater than or equal to the second preset temperature threshold, it is determined that the current defrosting conditions of the air conditioner do not meet the pre-defrosting conditions.

4. The defrosting control method for an air conditioner based on a dual-fan unit according to any one of claims 1 to 3, characterized in that, The step of determining whether the current defrosting conditions of the air conditioner meet the target defrosting conditions based on the wind speeds of the first and second fans includes: Compare whether the wind speeds of the first fan and the second fan are the same; If the first fan speed and the second fan speed are determined to be the same, the first fan speed and the second fan speed of the air conditioner are increased respectively to the target fan speed and the air conditioner is run for a second running time. In this state, it is determined that the current defrosting conditions of the air conditioner meet the target defrosting conditions. The target fan speed is determined based on the set indoor temperature. If the wind speeds of the first fan and the second fan are different, it is determined that the current defrosting conditions of the air conditioner do not meet the target defrosting conditions.

5. The defrosting control method for an air conditioner based on a dual-fan unit according to claim 4, characterized in that, After determining that the current defrosting conditions of the air conditioner do not meet the target defrosting conditions, the method further includes: If the wind speed of the first fan is greater than the wind speed of the second fan, keep the wind speed of the first fan unchanged, increase the wind speed of the second fan to the wind speed of the first fan, and run for the second running time. When the wind speed of the first fan is less than that of the second fan, the wind speed of the second fan is kept constant, the wind speed of the first fan is increased to that of the second fan, and the second running time is maintained.

6. The defrosting control method for an air conditioner based on a dual-fan unit according to claim 4, characterized in that, The target fan speed is determined based on the set indoor temperature, including: Obtain the actual indoor temperature of the air conditioner; When the actual indoor temperature reaches the set indoor temperature, the second fan speed corresponding to the actual indoor temperature is increased by a preset speed to obtain the target fan speed.

7. A defrosting control device for an air conditioner based on a dual-fan unit, characterized in that, The device is applied to an air conditioner, which includes at least an outdoor unit and an indoor unit; the outdoor unit includes at least a first fan, a second fan, an outdoor coil temperature sensor, and an outdoor ambient temperature sensor, wherein the outdoor coil temperature sensor is disposed at the coil of the second fan; the defrosting control device for the air conditioner based on dual fans includes: The acquisition module is used to acquire the outdoor ambient temperature during the operation of the air conditioner using the outdoor ambient temperature sensor, and to determine the first operating time of the air conditioner. The first judgment module is used to determine whether the current defrosting conditions of the air conditioner meet the pre-defrosting conditions based on the outdoor ambient temperature and the first running time. The determination module is used to obtain the first fan speed of the first fan and the second fan speed of the second fan when it is determined that the current defrosting conditions meet the pre-defrosting conditions. The second judgment module is used to determine whether the current defrosting conditions of the air conditioner meet the target defrosting conditions based on the wind speed of the first fan and the wind speed of the second fan. The defrosting control module is used to control the air conditioner to perform defrosting when it is determined that the current defrosting conditions of the air conditioner meet the target defrosting conditions; the first running time is the duration for which the air conditioner runs when the outdoor ambient temperature is less than a first preset temperature threshold; the pre-defrosting condition is the condition for obtaining the fan speed, and the target defrosting condition is the condition for controlling the air conditioner to perform defrosting.

8. An electronic device comprising a memory, a processor, and a computer program stored in the memory and running on the processor, characterized in that, When the processor executes the program, it implements the defrosting control method for an air conditioner based on a dual-fan unit as described in any one of claims 1 to 6.

9. A non-transitory computer-readable storage medium having a computer program stored thereon, characterized in that, When the computer program is executed by the processor, it implements the defrosting control method for an air conditioner based on a dual-fan unit as described in any one of claims 1 to 6.

10. An air conditioner, comprising at least a controller, an outdoor unit, and an indoor unit; said outdoor unit comprising at least: The system comprises a first fan, a second fan, an external coil temperature sensor, and an outdoor ambient temperature sensor, wherein the external coil temperature sensor is located at the coil of the second fan. The controller, when executed, implements the defrosting control method for an air conditioner based on a dual-fan unit as described in any one of claims 1 to 6.

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