Air conditioner defrosting control method, device and equipment, storage medium and air conditioner

Abstract

The invention provides an air conditioner defrosting control method, device and equipment, a storage medium and an air conditioner, and relates to the technical field of air conditioners. The method comprises the steps that an outdoor environment temperature sensor is used for detecting the outdoor environment temperature, and an outer coil pipe temperature sensor is used for detecting the outer coil pipe temperature; based on the outdoor environment temperature and the outer coil pipe temperature, a first defrosting opportunity is determined; an inner coil pipe temperature sensor is used for detecting the temperature of an inner coil pipe and obtaining the indoor set temperature; based on the temperature of the inner coil pipe and the indoor set temperature, second defrosting time is determined; and under the condition that the current defrosting parameters meet the first defrosting time and the second defrosting time at the same time, the air conditioner is controlled to execute the target defrosting mode. According to the embodiment, under the condition that the first defrosting time and the second defrosting time are met at the same time, the air conditioner is controlled to conduct defrosting in the target defrosting mode, the more accurate defrosting time can be determined, the indoor heating efficiency can be improved, and the experience feeling of a user is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of air conditioners, and in particular to an air conditioner defrosting control method, device, equipment, storage medium and air conditioner. Background Art

[0002] An air conditioner is a device that can adjust the indoor temperature. In the related art, the defrosting time of the air conditioner is usually determined by using a defrost coil sensor corresponding to each fan machine to detect the thickness of frost, and then determine the defrosting time. However, for multi-fan machines, such as dual-fan air conditioners, some manufacturers only configure one defrost coil sensor to determine the defrosting time in order to save costs.

[0003] However, due to factors such as the design of the external unit pipeline and different wind resistance, dual-fan models will inevitably have uneven heat exchange. During the heating process, the frost thickness on the back of the two fans will be inconsistent. For example, the upper fan has thin frost and the lower fan has thick frost. When only one defrost coil sensor is installed on the upper fan, when the frost degree of the upper fan is compared with the defrost thickness threshold and the defrost mechanism has not been triggered, the lower fan is already very frosted, which will greatly affect the heating efficiency of the air conditioner. If the defrost thickness threshold is set too low, it will lead to frequent defrosting, which will also greatly affect the heating efficiency.

[0004] Therefore, for multi-fan machines, especially dual-fan machines, how to defrost the air conditioner is a technical problem that needs to be solved urgently. Summary of the invention

[0005] The present invention provides an air conditioner defrost control method, device, equipment, storage medium and air conditioner, which can control the air conditioner to defrost in a target defrost mode when a first defrost timing and a second defrost timing are met at the same time. Not only can a more accurate defrost timing be determined, but also the indoor heating efficiency can be improved, thereby enhancing the user experience.

[0006] In a first aspect, the present invention provides an air conditioner defrosting control method, which is applied to an air conditioner, wherein the air conditioner at least comprises: an outdoor unit and an indoor unit; the outdoor unit at least comprises: a first fan machine, a second fan machine, an external coil temperature sensor and an outdoor environment temperature sensor, wherein the external coil temperature sensor is arranged at the coil of the second fan machine; the indoor unit is provided with an internal coil temperature sensor; the air conditioner defrosting control method comprises the following steps: Using the outdoor environment temperature sensor to detect the outdoor environment temperature when the air conditioner is running, and using the external coil temperature sensor to detect the external coil temperature at the second fan coil; Determining a first defrost timing based on the outdoor ambient temperature and the external coil temperature; Utilizing the inner coil temperature sensor to detect the inner coil temperature of the indoor coil, and obtaining the indoor set temperature set by the user; determining a second defrost timing based on the inner coil temperature and the indoor set temperature; When current defrost parameters satisfy both the first defrost timing and the second defrost timing, the air conditioner is controlled to execute a target defrost mode.

[0007] Preferably, according to an air conditioner defrost control method provided by the present invention, the first defrost timing is determined based on the outdoor ambient temperature and the external coil temperature, comprising: Comparing the outdoor environment temperature with a first temperature threshold, and comparing the external coil temperature with a second temperature threshold; When the outdoor ambient temperature is lower than the first temperature threshold and the external coil temperature is lower than the second temperature threshold, it is determined that the current defrost parameter of the air conditioner meets the first defrost timing.

[0008] Preferably, according to an air conditioner defrost control method provided by the present invention, the second defrost timing is determined based on the inner coil temperature and the indoor set temperature, comprising: Calculating and processing the inner coil temperature and the indoor set temperature to obtain an indoor temperature difference; Comparing the indoor temperature difference with a third temperature threshold, and comparing the inner coil temperature with a fourth temperature threshold; When the indoor temperature difference is less than the third temperature threshold and the inner coil temperature is less than the fourth temperature threshold, it is determined that the current defrost parameter of the air conditioner meets the second defrost timing.

[0009] Preferably, according to an air conditioner defrost control method provided by the present invention, the current defrost parameters of the air conditioner include at least: the outdoor ambient temperature, the outer coil temperature, the inner coil temperature and the indoor set temperature.

[0010] Preferably, according to the air conditioner defrosting control method provided by the present invention, after the step of comparing the indoor temperature difference with the third temperature threshold, the method further comprises: Compare the indoor temperature difference with a fifth temperature threshold; the fifth temperature threshold is greater than the third temperature threshold; When the indoor temperature difference is greater than or equal to the fifth temperature threshold, controlling the air conditioner to execute an original heating mode; and When the indoor temperature difference is greater than or equal to the third temperature threshold and the indoor temperature difference is less than the fifth temperature threshold, the air conditioner is controlled to operate at a target rotation speed.

[0011] Preferably, according to the air conditioner defrost control method provided by the present invention, the target speed at least includes: a target speed of the first fan and a target speed of the second fan; the step of determining the target speed includes: Acquire an original rotation speed of the first fan and an original rotation speed of the second fan in the original heating mode; Determining a rated speed based on a preset inverse speed increase strategy and the indoor temperature difference; The target speed of the first fan is determined according to the original speed of the first fan and the rated speed, and the target speed of the second fan is determined according to the original speed of the second fan and the rated speed.

[0012] In a second aspect, the present invention further provides an air conditioner defrost control device, which is applied to an air conditioner, wherein the air conditioner at least comprises: an outdoor unit and an indoor unit; the outdoor unit at least comprises: a first fan machine, a second fan machine, an external coil temperature sensor and an outdoor environment temperature sensor, wherein the external coil temperature sensor is arranged at the coil of the second fan machine; the indoor unit is provided with an internal coil temperature sensor; the air conditioner defrost control device comprises: a detection module, used to detect the outdoor ambient temperature when the air conditioner is running by using the outdoor ambient temperature sensor, and to detect the external coil temperature at the second fan coil by using the external coil temperature sensor; A first defrost timing determination module, configured to determine a first defrost timing based on the outdoor ambient temperature and the external coil temperature; An acquisition module, used to detect the inner coil temperature of the indoor coil using the inner coil temperature sensor, and to acquire the indoor set temperature set by the user; A second defrost timing determination module, configured to determine a second defrost timing based on the inner coil temperature and the indoor set temperature; The defrost control module is used to control the air conditioner to execute a target defrost mode when the current defrost parameters simultaneously meet the first defrost timing and the second defrost timing.

[0013] In a third aspect, the present invention further provides an electronic device comprising a memory, a processor and a computer program stored in the memory and executable on the processor, wherein when the processor executes the program, it implements any of the above-described air conditioner defrost control methods.

[0014] In a fourth aspect, the present invention further provides a non-transitory computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements any of the above-described air conditioner defrost control methods.

[0015] In a fifth aspect, the present invention further provides a computer program product, comprising a computer program, wherein when the computer program is executed by a processor, the air conditioner defrost control method as described above is implemented.

[0016] In the sixth aspect, the present invention also provides an air conditioner, which comprises at least: an outdoor unit and an indoor unit, the outdoor unit comprises at least: a first fan machine, a second fan machine, an external coil temperature sensor and an outdoor ambient temperature sensor, the external coil temperature sensor is arranged at the coil of the second fan machine; the indoor unit is provided with an internal coil temperature sensor, and the air conditioner also comprises an air conditioner defrost control device.

[0017] The present invention provides an air conditioner defrosting control method, device, equipment, storage medium and air conditioner, which detects the outdoor ambient temperature when the air conditioner is running by using the outdoor ambient temperature sensor, and detects the outer coil temperature at the second fan coil by using the outer coil temperature sensor; determines the first defrosting time based on the outdoor ambient temperature and the outer coil temperature; detects the inner coil temperature of the indoor coil by using the inner coil temperature sensor, and obtains the indoor set temperature set by the user; determines the second defrosting time based on the inner coil temperature and the indoor set temperature; and controls the air conditioner to execute the target defrosting mode when the current defrosting parameters simultaneously meet the first defrosting time and the second defrosting time. When the first defrosting time and the second defrosting time are met at the same time, the air conditioner is controlled to perform defrosting in the target defrosting mode, which can not only determine a more accurate defrosting time, but also improve the indoor heating efficiency and enhance the user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 This is one of the flow charts of the air conditioner defrosting control method provided by the present invention.

[0020] Figure 2 This is the second flow chart of the air conditioner defrosting control method provided by the present invention.

[0021] Figure 3 It is a structural schematic diagram of the air conditioner defrost control device provided by the present invention.

[0022] Figure 4 It is a structural schematic diagram of the electronic device provided by the present invention. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the drawings of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0024] First, several nouns involved in the present invention are analyzed: First, several nouns involved in the present invention are analyzed: 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, air humidity, etc.

[0025] Parts prone to frost: The evaporator is the most prone to frost. The air inlet and panel of the indoor unit are also prone to frost.

[0026] Consequences of frost: The impact of frost on the evaporator includes increasing the thermal resistance of the frost layer. The frost layer blocks part of the air flow area, thereby increasing the resistance of the air flowing through the evaporator. According to the characteristics of the fan, the increase in resistance will cause the air volume to decrease, thereby reducing the surface heat transfer coefficient and increasing energy consumption. The reduction in air volume caused by the frost layer is the main factor that leads to the deterioration of system operation.

[0027] Combine the following Figure 1-Figure 4 The present invention describes an air conditioner defrost control method, device, equipment, storage medium and air conditioner, which can control the air conditioner to defrost in a target defrost mode when a first defrost timing and a second defrost timing are met at the same time. This can not only determine a more accurate defrost timing, but also improve the indoor heating efficiency and enhance the user experience.

[0028] Figure 1 FIG. 1 is one of the flow charts of an air conditioner defrosting control method provided by the present invention, such as 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 detect the outdoor ambient temperature when the air conditioner is running, and using the external coil temperature sensor to detect the external coil temperature at the second fan coil; S200, determining a first defrosting time based on the outdoor ambient temperature and the external coil temperature; S300, using the inner coil temperature sensor to detect the inner coil temperature of the indoor coil, and obtaining the indoor set temperature set by the user; S400, determining a second defrosting time based on the inner coil temperature and the indoor set temperature; S500: When the current defrost parameters satisfy both the first defrost timing and the second defrost timing, control the air conditioner to execute a target defrost mode.

[0029] It should be noted that the air conditioner provided by the present invention includes a controller, an outdoor unit and an indoor unit; the outdoor unit includes at least: a first fan machine, a second fan machine, an external coil temperature sensor and an outdoor ambient temperature sensor, the external coil temperature sensor is arranged at the coil of the second fan machine, and the external coil temperature sensor is used to detect the external coil temperature at the coil of the second fan machine.

[0030] It should be noted that in the embodiment of the present invention, the frosting condition at the second fan can be determined based on the temperature of the outer coil at the second fan, but the outer coil temperature at the first fan cannot be determined, and therefore the frosting condition at the first fan cannot be determined.

[0031] It should be further explained that the positions of the first fan and the second fan are not further limited, and the first fan can be above the second fan, or the first fan can be arranged to the left of the second fan. Similarly, the second fan can be arranged above the first fan, or the second fan can be arranged to the left of the first fan.

[0032] In step S100 of some embodiments, the outdoor ambient temperature sensor is used to detect the outdoor ambient temperature when the air conditioner is running, and the external coil temperature sensor is used to detect the external coil temperature at the second fan coil.

[0033] It can be understood that, let the outdoor ambient temperature be T1 and the external coil temperature of the second fan unit be T2.

[0034] In step S200 of some embodiments, a first defrost timing is determined based on the outdoor ambient temperature and the external coil temperature.

[0035] Furthermore, the specific steps of determining the first defrost timing based on the outdoor ambient temperature and the external coil temperature may be: Comparing the outdoor environment temperature with a first temperature threshold, and comparing the external coil temperature with a second temperature threshold; When the outdoor ambient temperature is less than the first temperature threshold and the temperature of the outdoor coil is less than the second temperature threshold, it is determined that the current defrosting parameter of the air conditioner meets the first defrosting opportunity.

[0036] Let the first temperature threshold be T0 and the second temperature threshold be T3. In some embodiments, T0 can be 10 degrees Celsius and T3 can be 0 degrees Celsius. When the outdoor ambient temperature is lower than 10 degrees Celsius and the temperature of the outdoor coil is lower than 0 degrees Celsius, the evaporator of the air conditioner is prone to frosting. Then, when the air conditioner is under such environmental parameters, it is determined that this is the first defrosting opportunity for the air conditioner to defrost.

[0037] Furthermore, the determination of the second temperature threshold can be based on the outdoor ambient temperature. For example: T1 >= 6 degrees Celsius, T3 = -6 degrees Celsius; -15 degrees Celsius <= T1 < 6 degrees Celsius, T3 = (5 T1 - 72) / 7; -23 degrees Celsius <= T1 < -15 degrees Celsius, T3 = (T1 - 69) / 4; T1 < -23 degrees Celsius, T3 = -23 degrees Celsius.

[0038] In step S300 of some embodiments, the inner coil temperature sensor is used to detect the inner coil temperature of the indoor coil and obtain the indoor set temperature set by the user.

[0039] It can be understood that let the detected inner coil temperature be T4 and the indoor set temperature set by the user be T5.

[0040] In step S400 of some embodiments, based on the inner coil temperature and the indoor set temperature, a second defrosting opportunity is determined.

[0041] Furthermore, the step of determining the second defrosting opportunity based on the inner coil temperature and the indoor set temperature can specifically be: Perform calculation processing on the inner coil temperature and the indoor set temperature to obtain an indoor temperature difference; Compare the indoor temperature difference with a third temperature threshold, and compare the inner coil temperature with a fourth temperature threshold; When the indoor temperature difference is less than the third temperature threshold and the inner coil temperature is less than the fourth temperature threshold, it is determined that the current defrosting parameter of the air conditioner meets the second defrosting opportunity.

[0042] Let the indoor temperature difference be T6. T6 = T4 - T5, where T6 is the indoor temperature difference, T4 is the inner coil temperature, and T5 is the indoor set temperature.

[0043] Let the third temperature threshold be T7 and the fourth temperature threshold be T8. In some embodiments, T7 may be 5 degrees Celsius and T8 may be 20 degrees Celsius.

[0044] The indoor temperature difference T6 is compared with the third temperature threshold T7, and the inner coil temperature T4 is compared with the fourth temperature threshold T8.

[0045] When the indoor temperature difference T6 is less than the third temperature threshold value T7, and the inner coil temperature T4 is less than the fourth temperature threshold value T8, it is determined that the current defrosting parameters of the air conditioner meet the second defrosting opportunity. In this scenario, it means that the inner coil temperature is relatively low, and the indoor air outlet temperature of the air conditioner is relatively low. At this time, it means that the frost degree of the outdoor first fan and the second fan is relatively thick, which has seriously affected the indoor heating, and it is necessary to defrost as soon as possible. Therefore, it is determined that this is the second defrosting opportunity.

[0046] In some embodiments of the present invention, after the step of comparing the indoor temperature difference with the third temperature threshold, the method further includes: The indoor temperature difference is compared with a fifth temperature threshold value, wherein the fifth temperature threshold value is greater than the third temperature threshold value; and the fifth temperature threshold value is set to T9, which may be 10 degrees Celsius.

[0047] When the indoor temperature difference is greater than or equal to the fifth temperature threshold, controlling the air conditioner to execute an original heating mode; and When the indoor temperature difference is greater than or equal to the third temperature threshold and the indoor temperature difference is less than the fifth temperature threshold, the air conditioner is controlled to operate at a target rotation speed.

[0048] When the indoor temperature difference is greater than or equal to the fifth temperature threshold, such as 10 degrees Celsius, it means that the heating effect of the air conditioner is still relatively good at this time, so no defrosting is performed at this time, and the air conditioner continues to be controlled to execute the original heating mode.

[0049] When the indoor temperature difference is greater than or equal to the third temperature threshold and the indoor temperature difference is less than the fifth temperature threshold, it means that the heating effect, although slightly reduced, the air conditioner still has a good heating capacity, so the air conditioner can be controlled to operate at the target speed.

[0050] Further, the target speed includes at least: a target speed of the first fan and a target speed of the second fan; and the target speed determination step may specifically be: Acquire an original rotation speed of the first fan and an original rotation speed of the second fan in the original heating mode; Determining a rated speed based on a preset inverse speed increase strategy and the indoor temperature difference; The target speed of the first fan is determined according to the original speed of the first fan and the rated speed, and the target speed of the second fan is determined according to the original speed of the second fan and the rated speed.

[0051] It can be understood that, in the original heating mode, the original speed of the first fan is K1, the original speed of the second fan is K2, and the rated speed is determined based on a preset inverse speed strategy and the indoor temperature difference.

[0052] The inverse speed strategy is to determine the speed (rated speed) that needs to be increased from the original speed of the fan machine based on the indoor temperature difference and the original speed of the fan machine.

[0053] Let the rated speed be K3. For example, if the indoor temperature difference is 6 degrees Celsius, K3 increases by 50 revolutions. If the indoor temperature difference is 9 degrees Celsius, K3 increases by 10 revolutions.

[0054] Then, the original speed K1 of the first fan and the rated speed K3 are added together to obtain the target speed of the first fan. The original speed K2 of the second fan and the rated speed K3 are added together to obtain the target speed of the first fan.

[0055] When the indoor temperature difference is greater than or equal to the third temperature threshold, and the indoor temperature difference is less than the fifth temperature threshold, it means that the heating effect, although slightly reduced, at this time, the air conditioner still has a good heating capacity. By controlling the air conditioner to operate at the target speed, specifically by controlling the first fan of the air conditioner to operate at the target speed of the first fan, and controlling the second fan of the air conditioner to operate at the target speed of the second fan, the heating efficiency of the air conditioner can be significantly improved.

[0056] In step S500 of some embodiments, when the current defrost parameters satisfy both the first defrost timing and the second defrost timing, the air conditioner is controlled to execute a target defrost mode.

[0057] The current defrosting parameters of the air conditioner include at least: the outdoor ambient temperature, the outer coil temperature, the inner coil temperature and the indoor set temperature.

[0058] It can be understood that when the defrost parameters of the air conditioner in the current situation satisfy both the first defrost timing and the second defrost timing, the air conditioner is controlled to execute the target defrost mode.

[0059] When the outdoor ambient temperature is lower than the first temperature threshold and the outer coil temperature is lower than the second temperature threshold, it is determined that the current defrost parameters of the air conditioner meet the first defrost timing. When the indoor temperature difference is lower than the third temperature threshold and the inner coil temperature is lower than the fourth temperature threshold, it is determined that the current defrost parameters of the air conditioner meet the second defrost timing. This is the best time for the air conditioner to defrost. At this best time, controlling the air conditioner to execute the target defrost mode can improve the indoor heating efficiency and enhance the user experience.

[0060] In some embodiments of the present invention, after determining the first defrost timing, the initial current value at the initial moment when the first fan runs at the target speed, the intermediate current value at the intermediate moment, and the terminal current value at the terminal moment can also be collected respectively.

[0061] The initial current value at the initial moment, the intermediate current value at the intermediate moment, and the terminal current value at the terminal moment are calculated and processed to obtain a first current average value of the first fan running for a first running time.

[0062] Similarly, a second current average value of the second fan running for the first running time may also be calculated.

[0063] The frosting conditions of the first fan and the second fan are determined according to whether the first current average value and the second current average value are the same.

[0064] The first current average value and the second current average value are the same, and it is determined that the frost degrees of the first fan and the second fan are the same.

[0065] The first current average value and the second current average value are different, and it is determined that the frost degree of the first fan machine and the second fan machine is different. Further, when the best defrosting time is determined, the air conditioner is controlled to execute the target defrosting mode. Furthermore, when the air conditioning control system receives the outdoor unit frost signal and executes the defrosting program, the defrosting function is automatically started: 1. The internal and external air supply motors stop supplying air, and the air conditioning system directly switches from heating to cooling mode; 2. When the cooling mode is in operation, the indoor air supply motor stops and the outdoor air supply motor starts; 3. Defrosting is completed (time setting and signal release), and the outdoor air supply motor stops; 4. The air conditioning system directly switches from cooling to heating mode, and the outdoor air supply motor starts; 5. When the condenser on the indoor side reaches the basic temperature, the indoor motor will resume air supply.

[0066] In an embodiment of the present invention, ultrasonic defrosting may be performed: 1. Use the mechanical vibration of ultrasound to destroy the ice crystal structure and melt the frost.

[0067] 2. Ultrasonic generator frequency 20-100kHz.

[0068] 3. The effect is affected by parameters such as frequency, sound pressure, and propagation distance.

[0069] 4. Can be used in conjunction with hot air defrosting and electric heating.

[0070] In an embodiment of the present invention, magnetic field defrosting may be performed: 1. Apply a magnetic field on the evaporator surface to change the structure of water molecules and inhibit frost.

[0071] 2. Coils are often used to generate alternating electromagnetic fields with a frequency of tens of hertz.

[0072] 3. Permanent magnetic materials can also be implanted to form a static magnetic field.

[0073] 4. Stable operation, no loss, and good frost inhibition effect.

[0074] In an embodiment of the present invention, nano-coating defrosting may be performed: 1. Nano coating can improve the surface structure of the evaporator and reduce the probability of frosting.

[0075] 2. Common ones include nano-silicone glue coating, etc.

[0076] 3. Nano coating can increase surface roughness and improve heat conduction.

[0077] 4. Anti-icing agents can also be added to improve the defrosting performance of the coating.

[0078] Figure 2 This is the second flow chart of the air conditioner defrosting control method provided by the present invention. First, the dual-fan outdoor unit of the air conditioner with dual-fan machine operates normally, and it is determined whether the outdoor ambient temperature T1 is less than the first temperature threshold T0. When it is determined that the outdoor ambient temperature is less than the first temperature threshold, it is determined whether the external coil temperature T2 is less than the second temperature threshold T3. When the external coil temperature is less than the second temperature threshold, the first current average value C1 of the first fan machine running at the target speed for the first operating time is determined, and the second current average value C2 of the second fan machine running at the target speed for the first operating time is determined. It is determined whether the first current average value and the second current average value are the same. If they are the same, it means that the frost degree of the first fan machine and the second fan machine is the same. The internal coil temperature T4 and the indoor set temperature T5 are detected, and the internal coil temperature T4 and the indoor set temperature T5 are calculated and processed to obtain the indoor temperature difference T6.

[0079] It is determined whether the indoor temperature difference T6 is greater than or equal to 5 degrees Celsius. When the indoor temperature difference T6 is less than 5 degrees Celsius, the air conditioner is controlled to execute the target defrosting mode.

[0080] When the indoor temperature difference T6 is greater than or equal to 5 degrees Celsius, although the degree of frost on the first fan unit and the second fan unit is the same, the air conditioner still has a good heating effect. It is not suitable for defrosting at this time, and the heating operation should continue until the indoor temperature difference is less than 5 degrees Celsius, then the air conditioner is controlled to execute the target defrost mode.

[0081] In some embodiments, the first fan and the second fan are controlled to rotate at 600 rpm simultaneously for 30 seconds, the average current values ​​C1 and C2 of the first fan and the second fan during 30 seconds are collected, and a=|(C1-C2) / C1| and b=|(C1-C2) / C2| are calculated. If a≤5% and b≤5%, C1=C2 is considered; if the deviation is greater than 5%, C1≠C2 is considered.

[0082] If C1≠C2, the frost thickness of the first and second fans is different, and the outdoor unit still has heating capacity and continues to operate until C1 and C2 are equal. If C1=C2, the frost thickness of the first fan and the second fan is the same.

[0083] In an embodiment of the present invention, the step of exiting the defrost mode is also included. For example, after the air conditioner enters the defrost mode, the temperature of the external coil of the air conditioner is detected. When the temperature of the external coil is higher than the set temperature (the set temperature can be reasonably set by a person skilled in the art according to the actual application scenario of the air conditioner), the continuous operation time of the air conditioner in this state is detected. When the continuous operation time is higher than the first preset time, for example, the continuous operation time is higher than 20 seconds (or any time between 15-25 seconds), it can be determined that the frost layer of the outdoor coil has been completely removed, and at this time, the air conditioner is exited from the defrost mode.

[0084] The present invention provides an air conditioner defrosting control method, device, equipment, storage medium and air conditioner, which detects the outdoor ambient temperature when the air conditioner is running by using the outdoor ambient temperature sensor, and detects the outer coil temperature at the second fan coil by using the outer coil temperature sensor; determines the first defrosting time based on the outdoor ambient temperature and the outer coil temperature; detects the inner coil temperature of the indoor coil by using the inner coil temperature sensor, and obtains the indoor set temperature set by the user; determines the second defrosting time based on the inner coil temperature and the indoor set temperature; and controls the air conditioner to execute the target defrosting mode when the current defrosting parameters simultaneously meet the first defrosting time and the second defrosting time. When the first defrosting time and the second defrosting time are met at the same time, the air conditioner is controlled to perform defrosting in the target defrosting mode, which can not only determine a more accurate defrosting time, but also improve the indoor heating efficiency and enhance the user experience.

[0085] The defrost control device for an air conditioner provided by the present invention is described below. The defrost control device for an air conditioner described below and the defrost control method for an air conditioner described above can be referred to each other.

[0086] like Figure 3 The figure shows a schematic diagram of the structure of the air conditioner defrost control device provided by the present invention, an air conditioner defrost control device, applied to an air conditioner, the air conditioner at least comprising: an outdoor unit and an indoor unit; the outdoor unit at least comprising: a first fan machine, a second fan machine, an external coil temperature sensor and an outdoor environment temperature sensor, the external coil temperature sensor being arranged at the coil of the second fan machine; the indoor unit being provided with an internal coil temperature sensor; the air conditioner defrost control device comprising: A detection module 310, configured to detect the outdoor ambient temperature when the air conditioner is running by using the outdoor ambient temperature sensor, and detect the external coil temperature at the second fan coil by using the external coil temperature sensor; A first defrost timing determination module 320 is configured to determine a first defrost timing based on the outdoor ambient temperature and the external coil temperature; An acquisition module 330 is used to detect the inner coil temperature of the indoor coil using the inner coil temperature sensor, and to acquire the indoor set temperature set by the user; A second defrost timing determination module 340 is used to determine a second defrost timing based on the inner coil temperature and the indoor set temperature; The defrost control module 350 is used to control the air conditioner to execute a target defrost mode when the current defrost parameters satisfy both the first defrost timing and the second defrost timing.

[0087] Preferably, the air conditioner defrost control device provided by the present invention determines the first defrost timing module 320 by specifically comparing the outdoor ambient temperature with the first temperature threshold, and comparing the external coil temperature with the second temperature threshold; When the outdoor ambient temperature is lower than the first temperature threshold and the external coil temperature is lower than the second temperature threshold, it is determined that the current defrost parameter of the air conditioner meets the first defrost timing.

[0088] Preferably, the air conditioner defrost control device provided by the present invention determines the second defrost timing module 340, which is specifically used to calculate and process the inner coil temperature and the indoor set temperature to obtain the indoor temperature difference; Comparing the indoor temperature difference with a third temperature threshold, and comparing the inner coil temperature with a fourth temperature threshold; When the indoor temperature difference is less than the third temperature threshold and the inner coil temperature is less than the fourth temperature threshold, it is determined that the current defrost parameter of the air conditioner meets the second defrost timing.

[0089] Preferably, the air conditioner defrost control device provided by the present invention is specifically used for the current defrost parameters of the air conditioner including at least: the outdoor ambient temperature, the outer coil temperature, the inner coil temperature and the indoor set temperature.

[0090] Preferably, the air conditioner defrost control device provided by the present invention is specifically used to compare and process the indoor temperature difference with a fifth temperature threshold; the fifth temperature threshold is greater than the third temperature threshold; When the indoor temperature difference is greater than or equal to the fifth temperature threshold, controlling the air conditioner to execute an original heating mode; and When the indoor temperature difference is greater than or equal to the third temperature threshold and the indoor temperature difference is less than the fifth temperature threshold, the air conditioner is controlled to operate at a target rotation speed.

[0091] Preferably, the air conditioner defrost control device provided by the present invention is specifically used for the target speed to include at least: the target speed of the first fan and the target speed of the second fan; obtaining the original speed of the first fan and the original speed of the second fan in the original heating mode; Determining a rated speed based on a preset inverse speed increase strategy and the indoor temperature difference; The target speed of the first fan is determined according to the original speed of the first fan and the rated speed, and the target speed of the second fan is determined according to the original speed of the second fan and the rated speed.

[0092] The present invention provides an air conditioner defrosting control method, device, equipment, storage medium and air conditioner, which detects the outdoor ambient temperature when the air conditioner is running by using the outdoor ambient temperature sensor, and detects the outer coil temperature at the second fan coil by using the outer coil temperature sensor; determines the first defrosting time based on the outdoor ambient temperature and the outer coil temperature; detects the inner coil temperature of the indoor coil by using the inner coil temperature sensor, and obtains the indoor set temperature set by the user; determines the second defrosting time based on the inner coil temperature and the indoor set temperature; and controls the air conditioner to execute the target defrosting mode when the current defrosting parameters simultaneously meet the first defrosting time and the second defrosting time. When the first defrosting time and the second defrosting time are met at the same time, the air conditioner is controlled to perform defrosting in the target defrosting mode, which can not only determine a more accurate defrosting time, but also improve the indoor heating efficiency and enhance the user experience.

[0093] Figure 4 An example of a physical structure diagram of an electronic device is shown in FIG. Figure 4 As shown, the electronic device may include: a processor 410, a communication interface 420, a memory 430 and a communication bus 440, wherein the processor 410, the communication interface 420 and the memory 430 communicate with each other through the communication bus 440. The processor 410 may call the logic instructions in the memory 430 to execute the air conditioner defrosting control method, the method comprising: using the outdoor environment temperature sensor to detect the outdoor environment temperature when the air conditioner is running, and using the outer coil temperature sensor to detect the outer coil temperature at the second fan coil; determining the first defrosting time based on the outdoor environment temperature and the outer coil temperature; using the inner coil temperature sensor to detect the inner coil temperature of the indoor coil, and obtaining the indoor set temperature set by the user; determining the second defrosting time based on the inner coil temperature and the indoor set temperature; and controlling the air conditioner to execute the target defrosting mode when the current defrosting parameters simultaneously meet the first defrosting time and the second defrosting time.

[0094] In addition, the logic instructions in the above-mentioned memory 430 can be implemented in the form of a software functional unit and can be stored in a computer-readable storage medium when it is sold or used as an independent product. Based on this understanding, the technical solution of the present invention, in essence, or the part that contributes to the prior art or the part of the technical solution, can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including a number of instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the method described in each embodiment of the present invention. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), disk or optical disk, etc. Various media that can store program codes.

[0095] On the other hand, the present invention also provides a computer program product, which includes a computer program. The computer program 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 air conditioner defrost control method provided by the above methods, the method including: using the outdoor ambient temperature sensor to detect the outdoor ambient temperature when the air conditioner is running, and using the external coil temperature sensor to detect the external coil temperature at the second fan coil; determining a first defrost timing based on the outdoor ambient temperature and the external coil temperature; using the internal coil temperature sensor to detect the internal coil temperature of the indoor coil, and obtaining the indoor set temperature set by the user; determining a second defrost timing based on the internal coil temperature and the indoor set temperature; and controlling the air conditioner to execute a target defrost mode when the current defrost parameters simultaneously meet the first defrost timing and the second defrost timing.

[0096] On the other hand, the present invention also provides a non-transitory computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, is implemented to execute the air conditioner defrost control method provided by the above-mentioned methods, the method comprising: using the outdoor ambient temperature sensor to detect the outdoor ambient temperature when the air conditioner is running, and using the external coil temperature sensor to detect the external coil temperature at the second fan coil; determining a first defrost timing based on the outdoor ambient temperature and the external coil temperature; using the internal coil temperature sensor to detect the internal coil temperature of the indoor coil, and obtaining the indoor set temperature set by the user; determining a second defrost timing based on the internal coil temperature and the indoor set temperature; and controlling the air conditioner to execute a target defrost mode when the current defrost parameters simultaneously meet the first defrost timing and the second defrost timing.

[0097] The device embodiments described above are merely illustrative, wherein the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the scheme of this embodiment. Ordinary technicians in this field can understand and implement it without paying creative labor.

[0098] Through the description of the above implementation methods, those skilled in the art can clearly understand that each implementation method can be implemented by means of software plus a necessary general hardware platform, and of course, can also be implemented by hardware. Based on this understanding, the above technical solution is essentially or the part that contributes to the prior art can be embodied in the form of a software product, and the computer software product can be stored in a computer-readable storage medium, such as ROM / RAM, a disk, an optical disk, etc., including a number of instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to execute the methods described in each embodiment or some parts of the embodiments.

[0099] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions 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, characterized in that: Applicable to an air conditioner, the air conditioner at least comprises: an outdoor unit and an indoor unit; the outdoor unit at least comprises: a first fan unit, a second fan unit, an external coil temperature sensor and an outdoor environment temperature sensor, the external coil temperature sensor being arranged at the coil of the second fan unit; the indoor unit is provided with an internal coil temperature sensor; The air conditioner defrosting control method comprises: Using the outdoor environment temperature sensor to detect the outdoor environment temperature when the air conditioner is running, and using the external coil temperature sensor to detect the external coil temperature at the second fan coil; Determining a first defrost timing based on the outdoor ambient temperature and the external coil temperature; Utilizing the inner coil temperature sensor to detect the inner coil temperature of the indoor coil, and obtaining the indoor set temperature set by the user; determining a second defrost timing based on the inner coil temperature and the indoor set temperature; When current defrost parameters satisfy both the first defrost timing and the second defrost timing, the air conditioner is controlled to execute a target defrost mode.

2. The air conditioner defrosting control method according to claim 1, characterized in that: The determining of the first defrosting timing based on the outdoor ambient temperature and the external coil temperature includes: Comparing the outdoor environment temperature with a first temperature threshold, and comparing the external coil temperature with a second temperature threshold; When the outdoor ambient temperature is lower than the first temperature threshold and the external coil temperature is lower than the second temperature threshold, it is determined that the current defrost parameter of the air conditioner meets the first defrost timing.

3. The air conditioner defrosting control method according to claim 1, characterized in that: The determining of the second defrosting timing based on the inner coil temperature and the indoor set temperature comprises: Calculating and processing the inner coil temperature and the indoor set temperature to obtain an indoor temperature difference; Comparing the indoor temperature difference with a third temperature threshold, and comparing the inner coil temperature with a fourth temperature threshold; When the indoor temperature difference is less than the third temperature threshold and the inner coil temperature is less than the fourth temperature threshold, it is determined that the current defrost parameter of the air conditioner meets the second defrost timing.

4. The air conditioner defrosting control method according to any one of claims 1 to 3, characterized in that: The current defrosting parameters of the air conditioner include at least: the outdoor ambient temperature, the outer coil temperature, the inner coil temperature and the indoor set temperature.

5. The air conditioner defrosting control method according to claim 3, characterized in that: After the step of comparing the indoor temperature difference with the third temperature threshold, the method further includes: Compare the indoor temperature difference with a fifth temperature threshold; the fifth temperature threshold is greater than the third temperature threshold; When the indoor temperature difference is greater than or equal to the fifth temperature threshold, controlling the air conditioner to execute an original heating mode; and When the indoor temperature difference is greater than or equal to the third temperature threshold and the indoor temperature difference is less than the fifth temperature threshold, the air conditioner is controlled to operate at a target rotation speed.

6. The air conditioner defrosting control method according to claim 5, characterized in that: The target speed includes at least: a target speed of the first fan and a target speed of the second fan; the step of determining the target speed includes: Acquire an original rotation speed of the first fan and an original rotation speed of the second fan in the original heating mode; Determining a rated speed based on a preset inverse speed increase strategy and the indoor temperature difference; The target speed of the first fan is determined according to the original speed of the first fan and the rated speed, and the target speed of the second fan is determined according to the original speed of the second fan and the rated speed.

7. An air conditioner defrost control device, characterized in that: Applied to an air conditioner, the air conditioner at least comprises: an outdoor unit and an indoor unit; the outdoor unit at least comprises: a first fan machine, a second fan machine, an external coil temperature sensor and an outdoor environment temperature sensor, the external coil temperature sensor is arranged at the coil of the second fan machine; the indoor unit is provided with an internal coil temperature sensor; the air conditioner defrost control device comprises: a detection module, used to detect the outdoor ambient temperature when the air conditioner is running by using the outdoor ambient temperature sensor, and to detect the external coil temperature at the second fan coil by using the external coil temperature sensor; A first defrost timing determination module, configured to determine a first defrost timing based on the outdoor ambient temperature and the external coil temperature; An acquisition module, used to detect the inner coil temperature of the indoor coil using the inner coil temperature sensor, and to acquire the indoor set temperature set by the user; A second defrost timing determination module, configured to determine a second defrost timing based on the inner coil temperature and the indoor set temperature; The defrost control module is used to control the air conditioner to execute a target defrost mode when the current defrost parameters simultaneously meet the first defrost timing and the second defrost timing.

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, the air conditioner defrost control method according to any one of claims 1 to 6 is implemented.

9. A non-transitory computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the air conditioner defrost control method according to any one of claims 1 to 6 is implemented.

10. An air conditioner, comprising at least: An outdoor unit and an indoor unit, characterized in that the outdoor unit at least includes: a first fan machine, a second fan machine, an external coil temperature sensor and an outdoor ambient temperature sensor, and the external coil temperature sensor is arranged at the coil of the second fan machine; the indoor unit is provided with an internal coil temperature sensor, and the air conditioner also includes an air conditioner defrost control device as described in claim 7.

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