Air conditioning control method, device and air conditioning

Abstract

The present invention provides an air conditioning control method, device, and air conditioner. The method comprises: obtaining coil temperature; controlling an indoor unit to activate an electric heating function when all coil temperatures are less than a first preset threshold value within a first preset time period; and adjusting the operating frequency of an outdoor unit based on the outlet air temperature. The air conditioning control method, device, and air conditioner provided by the present invention decide to activate the electric heating function based on the coil temperature. By subsequently monitoring the outlet air temperature, the outdoor unit is controlled to dynamically adjust its operating frequency. This enables analysis of the heating load based on the coil temperature. After heat compensation using electric heating, the frequency change is controlled using the outlet air temperature. This ensures that the air conditioner maintains an outlet air temperature of 56°C during the defrost phase, meeting the sterilization requirements of high-temperature self-cleaning in terms of both temperature and time, thereby enhancing the self-cleaning effect.

Description

Technical Field

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

[0002] 56°C is the safe temperature for inactivating viruses, and similarly, 56°C is the safe temperature for high-temperature sterilization in self-cleaning air conditioners. The high-temperature self-cleaning process includes: During the self-cleaning process, the evaporator coil surface rapidly cools down to frost, stripping off bacteria, dust, and other particles. It then rapidly heats up (above 56°C) to defrost, turning the frost into water to wash away bacteria and dust. Continuing this temperature effectively kills relevant pathogens, achieving a sterilization rate of 99%.

[0003] However, if the indoor and outdoor temperatures are too low or the air conditioner itself has a small displacement, it will be difficult for the air conditioner to reach a temperature of 56 degrees Celsius due to its poor heating capacity, and to maintain continuous and stable heating at this temperature for more than 30 minutes. This cannot meet the sterilization requirements of high-temperature self-cleaning, resulting in poor self-cleaning effects and affecting the health of users. Summary of the Invention

[0004] The present invention provides an air conditioning control method, an apparatus and an air conditioner, which are used to solve the defect in the prior art that the self-cleaning effect cannot meet the sterilization requirements of high-temperature self-cleaning.

[0005] The present invention provides an air conditioning control method, comprising:

[0006] Get coil temperature;

[0007] When the temperatures of all the coils are lower than a first preset threshold value within a first preset time period, controlling the indoor unit to activate the electric heating function;

[0008] Adjust the operating frequency of the outdoor unit based on the outlet air temperature;

[0009] Among them, the coil temperature is obtained when the air conditioner starts the high-temperature self-cleaning mode; the air outlet temperature is obtained after the indoor unit activates the electric heating function; the first preset threshold is the lower limit of the normal temperature range of the coil in the high-temperature self-cleaning mode.

[0010] According to an air conditioning control method provided by the present invention, adjusting the operating frequency of the outdoor unit based on the air outlet temperature includes:

[0011] When it is determined that the outlet air temperature is greater than or equal to a second preset threshold, dividing the outlet air temperature range greater than the second preset threshold into intervals to obtain at least two outlet air temperature intervals;

[0012] If it is determined that the outlet air temperature is within the first outlet air temperature range, controlling the outdoor unit to increase the operating frequency;

[0013] If it is determined that the outlet air temperature is within the second outlet air temperature range, controlling the outdoor unit to maintain the operating frequency;

[0014] If it is determined that the outlet air temperature is in the third outlet air temperature range, the outdoor unit is controlled to reduce the operating frequency.

[0015] According to an air conditioning control method provided by the present invention, if it is determined that the outlet air temperature is in the first outlet air temperature range, controlling the outdoor unit to increase the operating frequency includes:

[0016] obtaining a first frequency change corresponding to the first target subinterval according to the first target subinterval corresponding to the outlet air temperature;

[0017] Based on the first frequency change, controlling the outdoor unit to increase the operating frequency;

[0018] The first target sub-interval is obtained by dividing the first air outlet temperature interval; and the first frequency change is greater than zero.

[0019] According to an air conditioning control method provided by the present invention, if it is determined that the outlet air temperature is in the third outlet air temperature range, controlling the outdoor unit to reduce the operating frequency includes:

[0020] obtaining a second frequency change corresponding to the second target subinterval according to the second target subinterval corresponding to the outlet air temperature;

[0021] Based on the second frequency change, controlling the outdoor unit to reduce the operating frequency;

[0022] The second target sub-interval is obtained by dividing the third air outlet temperature interval; and the second frequency change is less than zero.

[0023] According to an air conditioning control method provided by the present invention, the step of adjusting the operating frequency of the outdoor unit based on the air outlet temperature further includes:

[0024] If it is determined that the air outlet temperature is less than a second preset threshold, determining a target operating frequency based on the air outlet temperature and the initial frequency of the outdoor unit;

[0025] Based on the target operating frequency, the operating frequency of the outdoor unit is adjusted.

[0026] According to an air conditioning control method provided by the present invention, after adjusting the operating frequency of the outdoor unit based on the air outlet temperature, the method further includes:

[0027] Get the new coil temperature;

[0028] When the temperature of each of the new coils is greater than a third preset threshold value within a second preset time period, controlling the indoor unit to turn off the electric heating function;

[0029] The third preset threshold is the upper limit of the normal temperature range of the coil in the high-temperature self-cleaning mode; and the second preset time is less than the first preset time.

[0030] The present invention also provides an air conditioning control device, comprising:

[0031] Coil temperature monitoring module, used to obtain coil temperature;

[0032] An electric heating activation module is configured to control the indoor unit to activate the electric heating function when the temperatures of all the coils are lower than a first preset threshold value within a first preset time period;

[0033] An operating frequency control module is used to adjust the operating frequency of the outdoor unit based on the outlet air temperature;

[0034] Among them, the coil temperature is obtained when the air conditioner starts the high-temperature self-cleaning mode; the air outlet temperature is obtained after the indoor unit activates the electric heating function; the first preset threshold is the lower limit of the normal temperature range of the coil in the high-temperature self-cleaning mode.

[0035] The present invention also provides an air conditioner, comprising an indoor unit and an outdoor unit, wherein the indoor unit is provided with a control processor, a first sensor module and a second sensor module, the first sensor module is provided at the coil of the indoor unit, and the second sensor module is provided at the air outlet of the indoor unit; and further comprises a memory and a program or instruction stored in the memory and executable on the control processor, wherein when the program or instruction is executed by the control processor, any one of the above-mentioned air conditioning control methods is executed.

[0036] The present invention also provides a non-transitory computer-readable storage medium having a computer program stored thereon, which implements any of the above-described air conditioning control methods when executed by a processor.

[0037] The present invention also provides a computer program product, comprising a computer program, wherein when the computer program is executed by a processor, the computer program implements any of the above-mentioned air-conditioning control methods.

[0038] The air conditioning control method, device and air conditioner provided by the present invention decide to turn on the electric heating function based on the coil temperature, and control the outdoor unit to dynamically adjust the operating frequency by subsequently monitoring the outlet air temperature, thereby realizing analysis of the heating load according to the coil temperature. After using electric heating for heat compensation, the outlet air temperature is used to control the frequency change, so that the air conditioner always maintains the outlet air temperature at 56°C during the defrost stage, meeting the sterilization requirements of high-temperature self-cleaning in terms of temperature and time, and enhancing the self-cleaning effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] In order to more clearly illustrate the technical solutions in the present invention or the prior art, a brief introduction is given below to 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 any creative work.

[0040] Figure 1 1 is a flow chart of the air conditioning control method provided by the present invention;

[0041] Figure 2 It is a structural schematic diagram of the air conditioning control device provided by the present invention;

[0042] Figure 3 It is a structural schematic diagram of the air conditioner provided by the present invention. DETAILED DESCRIPTION

[0043] To make the objectives, technical solutions, and advantages of the present invention more clear, the technical solutions of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts shall fall within the scope of protection of the present invention.

[0044] The terms "first," "second," and the like in this application are used to distinguish similar objects, and are not used to describe a particular order or precedence. It should be understood that the terms used in this manner are interchangeable where appropriate, so that the embodiments of this application can be implemented in orders other than those illustrated or described herein. Furthermore, the objects distinguished by "first," "second," and the like generally refer to a class of objects and do not limit the number of objects. For example, the first object may be one or more.

[0045] It should be understood that the terms used in this specification are only for the purpose of describing specific embodiments and are not intended to limit the present invention. As used in the present invention, unless the context clearly indicates otherwise, the singular forms "a", "an" and "the" are intended to include the plural forms.

[0046] The terms “include” and “comprising” indicate the presence of described features, integers, steps, operations, elements and / or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components and / or groups thereof.

[0047] Figure 1 FIG. 1 is a flow chart of the air conditioning control method provided by the present invention. Figure 1 As shown, the air conditioning control method provided by the embodiment of the present invention includes: step 101, obtaining the coil temperature.

[0048] The coil temperature is obtained when the air conditioner is in high-temperature self-cleaning mode.

[0049] It should be noted that the execution subject of the air-conditioning control method provided in the embodiment of the present invention is an air-conditioning control device.

[0050] The application scenario of the air-conditioning control method provided by the embodiment of the present invention is that after the user activates the high-temperature self-cleaning mode of the air-conditioning system, the electric heating function is turned on by the coil temperature fed back in real time by the sensor module set at the coil, and the operating frequency of the outdoor unit is adjusted using the air outlet temperature, so that the air outlet temperature of air conditioners of various displacements can be quickly stabilized and maintained at a higher temperature.

[0051] The sensor module provided at the coil periodically collects the coil temperature of the indoor unit at a specified time interval and sends the coil temperature to the air conditioning control device. The embodiment of the present invention does not specifically limit the working cycle of the sensor module.

[0052] Optionally, the sensor module can perform data collection operations in a default working cycle.

[0053] Optionally, the user may issue a cycle change instruction so that the sensor module receives and responds to the instruction and changes the working cycle to the cycle indicated by the instruction to perform the acquisition operation.

[0054] It should be noted that before step 101, the user needs to send an activation instruction through the transmission medium to activate the high-temperature self-cleaning mode of the air-conditioning system, so that the air-conditioning system enters the default frosting stage and defrosting stage successively to remove dust particles and bacteria attached to the inside of the indoor unit.

[0055] Optionally, the user may transmit an activation instruction through the control device by wireless communication between the control device and the air-conditioning system, so that the air-conditioning system initializes the high-temperature self-cleaning mode.

[0056] Optionally, the user may issue an activation instruction through voice interaction, and the air-conditioning system receives the activation instruction and initializes the high-temperature self-cleaning mode after performing voice recognition.

[0057] Specifically, in step 101, after the air conditioning control device determines that the air conditioning starts the high-temperature self-cleaning mode according to the operating information fed back by each component according to the activation instruction, it continuously receives the coil temperature collected by the sensor module set at the coil.

[0058] Step 102: When the temperatures of all coils are lower than a first preset threshold value within a first preset time period, the indoor unit is controlled to activate the electric heating function.

[0059] The first preset threshold is the lower limit of the normal temperature range of the coil in the high-temperature self-cleaning mode.

[0060] It should be noted that the first preset threshold refers to the lower limit of the normal temperature range of the coil in the high-temperature self-cleaning mode.

[0061] For example, in the high-temperature self-cleaning mode, if the air outlet temperature in the defrost stage is 56°C, the normal temperature range corresponding to the coil is between 52°C and 63°C, so the first preset threshold may be 52°C.

[0062] The first preset time period refers to the time period for monitoring the coil temperature before the electric heating function is turned on. For example, the first preset time period may be 5 minutes.

[0063] Specifically, in step 102 , the air conditioning control device compares each coil temperature monitored within a first preset time period with a first preset threshold.

[0064] If the coil temperature at all times is less than the first preset threshold, it means that the coil temperature is relatively low during the corresponding period, which means that the heating capacity of the small-displacement air conditioner itself is poor, or the heating amount generated by the large-displacement air conditioner does not reach the temperature specified by the high-temperature self-cleaning mode, resulting in a slow defrosting process. An activation instruction is generated and distributed to the indoor unit.

[0065] The indoor unit receives and responds to the activation instruction, activates the electric auxiliary heating element, and monitors the outlet air temperature at the indoor unit's air outlet to adjust the operating frequency of the outdoor unit while promoting defrosting through the additional heat provided by the element.

[0066] The electric auxiliary heating element built into the indoor unit includes but is not limited to a PTC heater, a resistance element, etc., which is not specifically limited in the embodiment of the present invention.

[0067] If the coil temperature is less than the first preset threshold at at least one moment, it means that the coil temperature is not stable during the corresponding period, so the heating load of the air conditioner cannot be determined. Therefore, the coil temperature continues to be monitored until all coil temperatures within the next first preset time period are less than the first preset threshold, and then relevant logical judgment is performed.

[0068] If the coil temperature at all times is greater than or equal to the first preset threshold, it means that the coil temperature is relatively high during the corresponding period, that is, the heating amount generated by both small-displacement and large-displacement air conditioners can reach the temperature specified by the high-temperature self-cleaning mode, and the defrost process is not disturbed. There is no need to turn on the electric heating function, and the air conditioner can still run at the current intensity.

[0069] Step 103: Adjust the operating frequency of the outdoor unit based on the outlet air temperature.

[0070] Among them, the air outlet temperature is obtained after the electric heating function of the indoor unit is activated.

[0071] Specifically, in step 103, the air conditioning control device determines that the electric heating function has been started based on the operating information fed back by the electric auxiliary heating element, uses the outlet air temperature collected by the sensor module set at the air outlet, obtains the frequency adjustment strategy corresponding to the outlet air temperature, and encapsulates the adjustment amount and adjustment frequency indicated by the frequency adjustment strategy into a control instruction and sends it to the outdoor unit.

[0072] The outdoor unit receives and responds to the control instruction, and makes adjustments based on the current operating frequency according to the adjustment amount and adjustment frequency carried in the control instruction.

[0073] The embodiment of the present invention decides to turn on the electric heating function based on the coil temperature. By subsequently monitoring the outlet air temperature, the outdoor unit is controlled to dynamically adjust the operating frequency, thereby analyzing the heating load according to the coil temperature. After using electric heating for heat compensation, the outlet air temperature is used to control the frequency change, so that the air conditioner always maintains the outlet air temperature at 56°C during the defrost stage, meeting the sterilization requirements of high-temperature self-cleaning in terms of temperature and time, and enhancing the self-cleaning effect.

[0074] On the basis of any of the above embodiments, the operating frequency of the outdoor unit is adjusted based on the outlet air temperature, including: when it is determined that the outlet air temperature is greater than or equal to a second preset threshold, the outlet air temperature range greater than the second preset threshold is divided into intervals to obtain at least two outlet air temperature intervals.

[0075] If it is determined that the air outlet temperature is in the first air outlet temperature range, the outdoor unit is controlled to increase the operating frequency.

[0076] If it is determined that the outlet air temperature is in the second outlet air temperature range, the outdoor unit is controlled to maintain the operating frequency.

[0077] If it is determined that the outlet air temperature is in the third outlet air temperature range, the outdoor unit is controlled to reduce the operating frequency.

[0078] It should be noted that the second preset threshold refers to the optimal air outlet temperature in the high-temperature self-cleaning mode. For example, the second preset threshold may be 56°C.

[0079] Specifically, in step 103, after determining that the outlet air temperature is greater than or equal to the second preset threshold, the air conditioning control device uses the second preset threshold as the starting endpoint of the threshold interval, and sets n points within the threshold interval for division to obtain n+1 outlet air temperature intervals.

[0080] Wherein, n is a positive integer greater than or equal to 1. Each coil temperature sub-interval corresponds to a different fan speed adjustment strategy.

[0081] The embodiment of the present invention does not specifically limit the value of n.

[0082] For example, n may be 2. The threshold interval not less than the second preset threshold is divided into three outlet air temperature intervals, namely, a first outlet air temperature interval, a second outlet air temperature interval, and a third coil temperature sub-interval, wherein:

[0083] The first outlet air temperature range can be [56, 58). If the outlet air temperature belongs to the first outlet air temperature range, it means that the heating capacity of the current defrost stage just meets the basic requirements of high-temperature self-cleaning. In this way, the compressor of the outdoor unit is controlled to slightly increase the operating frequency and slightly compensate for the outlet air temperature to avoid heat loss caused by the action of the indoor fan, resulting in the actual outlet air temperature being slightly lower than the corresponding design value.

[0084] The second air outlet temperature range can be [58, 62). If the air outlet temperature belongs to the second air outlet temperature range, it means that even under the action of the indoor fan, its corresponding heating capacity can meet the high-temperature self-cleaning sterilization requirements, then the compressor of the outdoor unit is controlled to continue running at the current operating frequency.

[0085] The third air outlet temperature range can be [62, 68). If the air outlet temperature belongs to the third air outlet temperature range, it means that under the action of the indoor fan, the corresponding heating capacity is much higher than the sterilization requirement of high-temperature self-cleaning. In this case, the compressor of the outdoor unit is controlled to slightly reduce the operating frequency to avoid generating excess heating capacity and causing energy waste.

[0086] The embodiment of the present invention is based on the different outlet air temperature ranges when the outlet air temperature after the electric heating is turned on is greater than the second preset threshold value, and decides that the outdoor unit shall execute different adjustment strategies for the operating frequency, thereby realizing dynamic adjustment of the operating frequency of the outdoor unit according to the outlet air temperature, so that under the joint action of the air conditioner electric heating and the outdoor machine heating, the outlet air temperature is always maintained within a reasonable temperature range, while enhancing the self-cleaning effect, also taking into account the effect of saving energy efficiency.

[0087] Based on any of the above embodiments, if it is determined that the outlet air temperature is in the first outlet air temperature range, controlling the outdoor unit to increase the operating frequency includes: obtaining a first frequency change corresponding to the first target sub-range according to the first target sub-range corresponding to the outlet air temperature.

[0088] The first target sub-interval is obtained by dividing the first outlet air temperature interval. The first frequency change is greater than zero.

[0089] It should be noted that the air conditioning control device pre-sets N1 points in the first air outlet temperature interval for division to obtain N1+1 sub-intervals.

[0090] Wherein, N1 is an integer greater than or equal to 0. A different first frequency change is set for each sub-interval. Furthermore, each first speed change is greater than zero, and its absolute value decreases as the upper limit of the corresponding sub-interval approaches the upper limit of the first outlet air temperature interval.

[0091] Specifically, the air conditioning control device takes the sub-interval where the outlet air temperature is within the first outlet air temperature interval as the first target sub-interval, and obtains the first frequency change corresponding to the sub-interval.

[0092] The first frequency variation is the value of the operating frequency increased per unit time and is used to indicate the rate of increase of the operating frequency in the outdoor unit.

[0093] Based on the first frequency change, the outdoor unit is controlled to increase the operating frequency.

[0094] Specifically, the air conditioning control device encapsulates the acquired first frequency variation into a frequency increase control instruction, and sends the instruction to the outdoor unit.

[0095] The outdoor unit receives and responds to the frequency increase control instruction, controls the compressor inside it, and increases the operating frequency according to the increase rate indicated by the first frequency change amount based on the limited operating frequency when the heating mode is initially started for defrosting being the initial operating frequency.

[0096] The embodiment of the present invention does not specifically limit the frequency increase process. For example, taking N1 equal to 0 as an example, the outlet air temperature is judged based on the first outlet air temperature range as a whole, where:

[0097] If the air outlet temperature is at [56,58), the corresponding first frequency change is +0.1 Hz / s, that is, the operating frequency of the outdoor unit starts to increase at a speed of 1 Hz / 10s.

[0098] It is understandable that during the frequency increase process, after the frequency is continuously increased at this rate for 1 minute, the operating frequency after this frequency increase is maintained for 1 minute, and the outlet air temperature is continued to be determined to prevent the frequency from jumping back and forth and affecting the stability of the equipment.

[0099] It is understandable that during the frequency increase process, if the operating frequency after the frequency increase reaches the rated maximum operating frequency of the outdoor unit, the frequency increase will no longer continue and the outdoor unit will continue to operate at the maximum operating frequency.

[0100] In this embodiment of the present invention, when determining the outdoor unit's operating frequency based on the outlet air temperature after electric heating is activated, a first frequency variation is determined based on the sub-interval within which the outlet air temperature falls. This allows the outdoor unit to regularly increase its operating frequency in accordance with the first frequency variation. This achieves a quantitative increase in the operating frequency adapted to subsequent outlet air temperatures, gradually increasing the outlet air temperature in high-temperature self-cleaning mode while maintaining it within a reasonable temperature range. This ensures that small-displacement air conditioners can maintain a continuously stable output temperature, while large-displacement air conditioners achieve a higher output temperature to accelerate the defrosting process, enhancing the self-cleaning effect and efficiency.

[0101] Based on any of the above embodiments, if it is determined that the outlet air temperature is in the third outlet air temperature range, controlling the outdoor unit to reduce the operating frequency includes: obtaining a second frequency change corresponding to the second target sub-range according to the second target sub-range corresponding to the outlet air temperature.

[0102] The second target sub-interval is obtained by dividing the third outlet air temperature interval. The second frequency change is less than zero.

[0103] It should be noted that the air conditioning control device pre-sets N2 points in the third air outlet temperature interval for division to obtain N2+1 sub-intervals.

[0104] Wherein, N2 is a positive integer greater than or equal to 1. A different second frequency change is set for each sub-interval. Furthermore, each second speed change is less than zero, and its absolute value decreases as the lower limit of the corresponding sub-interval approaches the lower limit of the third outlet air temperature range.

[0105] Specifically, the air conditioning control device uses the sub-interval in which the outlet air temperature is within the third outlet air temperature interval as the second target sub-interval, and obtains the second frequency change corresponding to the sub-interval.

[0106] The second frequency variation is the value of the operating frequency reduced per unit time and is used to indicate the reduction rate of the operating frequency in the outdoor unit.

[0107] Based on the second frequency change amount, the outdoor unit is controlled to reduce the operating frequency.

[0108] Specifically, the air conditioning control device encapsulates the acquired second frequency variation into a frequency reduction control instruction, and sends the instruction to the outdoor unit.

[0109] The outdoor unit receives and responds to the frequency reduction control instruction, controls the compressor inside it, and reduces the operating frequency according to the reduction rate indicated by the second frequency change amount based on the limited operating frequency when the heating mode is initially started for defrosting being the initial operating frequency.

[0110] The embodiment of the present invention does not specifically limit the above frequency reduction process. For example, taking N2 equal to 1 as an example, the third outlet temperature range is divided into two sub-ranges, namely [62, 65) and [65, 68), where:

[0111] If the air outlet temperature is in [62, 65), the corresponding second frequency change is -0.1 Hz / s, that is, the operating frequency of the outdoor unit starts to decrease at a rate of 1 Hz / 10s.

[0112] If the air outlet temperature is in [65, 68), the corresponding second frequency change is -0.2 Hz / s, that is, the operating frequency of the outdoor unit starts to decrease at a rate of 2 Hz / 10s.

[0113] It is understandable that during the frequency reduction process, after the frequency is continuously reduced at this rate for 1 minute, the operating frequency after this frequency reduction is maintained for 30 seconds, and the outlet temperature is continued to be determined to prevent the frequency from jumping back and forth and affecting the stability of the equipment.

[0114] It is understandable that, during the frequency reduction process, different frequency reduction strategies may be formulated based on the divided sub-intervals, the corresponding second frequency change amount, and the duration of reducing the operating frequency at the corresponding rate.

[0115] This embodiment of the present invention controls the outdoor unit's operating frequency reduction based on the outlet air temperature after electric heating is activated. A second frequency variation is determined based on the outlet air temperature's subrange, allowing the outdoor unit to regularly reduce its operating frequency in accordance with the second frequency variation. This achieves a quantitative reduction in the operating frequency based on subsequent outlet air temperatures, gradually lowering the outlet air temperature in high-temperature self-cleaning mode and maintaining it within a reasonable temperature range. This ensures that small-displacement air conditioners can maintain a continuous and stable output temperature, while large-displacement air conditioners achieve a higher output temperature to accelerate the defrosting process, enhancing the self-cleaning effect and efficiency.

[0116] Based on any of the above embodiments, adjusting the operating frequency of the outdoor unit based on the outlet air temperature also includes: when it is determined that the outlet air temperature is less than a second preset threshold, determining the target operating frequency based on the outlet air temperature and the initial frequency of the outdoor unit.

[0117] It should be noted that the initial frequency of the outdoor unit refers to the period from when the compressor starts running, during which the unit operates at the limited frequency as the initial frequency.

[0118] The embodiment of the present invention does not specifically limit the initial frequency. For example, the initial frequency may be 68 Hz.

[0119] Specifically, in step 103, after the outdoor unit has been running at the initial frequency for a period of time, if the air outlet temperature is still determined to be less than the second preset threshold, the air outlet temperature and the initial frequency of the outdoor unit are input into a mathematical model to calculate the target operating frequency.

[0120] The calculation process is not specifically limited in the embodiment of the present invention. For example, the target operating frequency is calculated as follows:

[0121] f targe =(Tn-T)*k+b

[0122] Among them, f targe is the target operating frequency, Tn is the ideal outlet air temperature in high-temperature self-cleaning mode, T is the currently collected outlet air temperature, k is the temperature-frequency conversion coefficient, and b is the initial frequency of the outdoor unit.

[0123] Exemplarily, Tn=56, k=5, b=68.

[0124] Based on the target operating frequency, adjust the operating frequency of the outdoor unit.

[0125] Specifically, the air conditioning control device encapsulates the converted target operating frequency into a frequency increase control instruction and sends it to the outdoor unit.

[0126] The outdoor unit receives and responds to the frequency increase control command, adjusting the limited operating frequency during the initial startup of the heating mode for defrosting to the target operating frequency. Furthermore, the target operating frequency must not exceed the rated maximum operating frequency of the compressor in the outdoor unit.

[0127] This embodiment of the present invention dynamically adjusts the outdoor unit's operating frequency based on the outlet air temperature when the outlet air temperature after electric heating is activated is less than a second preset threshold. The system calculates a target operating frequency, which the outdoor unit then increases to. This allows the combined effects of the air conditioner's electric heating and outdoor unit heating to significantly increase the outlet air temperature and stabilize it within a reasonable temperature range, enhancing the self-cleaning effect while also achieving energy savings.

[0128] Based on any of the above embodiments, after adjusting the operating frequency of the outdoor unit based on the outlet air temperature, the method further includes: obtaining a new coil temperature.

[0129] Specifically, after step 103, while the compressor of the outdoor unit is adjusting its operating frequency, the air conditioning control device reacquires a new coil temperature based on the coil temperature continuously fed back by the sensor module provided at the coil.

[0130] When each new coil temperature within the second preset time period is greater than the third preset threshold, the indoor unit is controlled to turn off the electric heating function.

[0131] The third preset threshold is the upper limit of the normal temperature range of the coil in the high-temperature self-cleaning mode. The second preset time length is less than the first preset time length.

[0132] It should be noted that the third preset threshold refers to the upper limit of the normal temperature range of the coil in the high-temperature self-cleaning mode.

[0133] For example, in the high-temperature self-cleaning mode, if the air outlet temperature in the defrost stage is 56°C, the normal temperature range corresponding to the coil is between 52°C and 63°C, so the first preset threshold may be 63°C.

[0134] The second preset duration refers to the duration of coil temperature monitoring after the electric heating function is turned on. Due to the rapid temperature loss process, the second preset duration is shorter than the first preset duration.

[0135] Exemplarily, the second preset duration may be 2 minutes.

[0136] Specifically, after step 103 , during the frequency adjustment process, the air conditioning control device compares each new coil temperature monitored within the second preset time period with the third preset threshold.

[0137] If the coil temperature at all times is greater than the third preset threshold, it means that the coil temperature is relatively high during the corresponding period. That is, under the combined effect of electric heating and adjustable operating frequency, the heating capacity of the air conditioner of any displacement fully meets the operation of the high-temperature self-cleaning mode, and a shutdown command is generated and distributed to the indoor unit.

[0138] The indoor unit receives and responds to the shutdown command, turns off the electric auxiliary heating element, suspends the additional heat provided by the element, and only maintains the subsequent air outlet temperature at the ideal value of the high-temperature self-cleaning mode by adjusting the operating frequency.

[0139] If the coil temperature is not greater than the third preset threshold at at least one moment, it means that the coil temperature is not stable during the corresponding period, so the heating load of the air conditioner cannot be determined. Therefore, the coil temperature continues to be monitored until all coil temperatures within the next second preset time period are greater than the third preset threshold, and then relevant logical judgment is performed.

[0140] If the coil temperature at all times is less than or equal to the third preset threshold, it means that the coil temperature is relatively low during the corresponding period, that is, the heating amount generated by both small-displacement and large-displacement air conditioners fails to meet the requirements of the high-temperature self-cleaning mode. In this case, there is no need to turn off the electric heating function, and the air conditioner electric heating can continue to operate in conjunction with adjusting the operating frequency.

[0141] In this embodiment of the present invention, during the frequency adjustment process after electric heating is activated, if the new coil temperature remains stable at a higher temperature, the indoor unit's electric heating function is turned off. This approach enables the indoor unit to shut down the electric heating function when heating load saturation is determined based on the new coil temperature. Frequency control relies solely on the outlet air temperature, maintaining the outlet air temperature at 56°C from the end of the defrost cycle with minimal energy consumption. This meets the sterilization requirements of high-temperature self-cleaning in terms of both temperature and duration, enhancing the self-cleaning effect and saving energy.

[0142] Figure 2 Schematic diagram of the structure of the air conditioning control device provided by the present invention. Figure 2 As shown, the air conditioning control device provided by the embodiment of the present invention includes: a coil temperature monitoring module 210, an electric heating start module 220 and an operating frequency control module 230, wherein:

[0143] The coil temperature monitoring module 210 is used to obtain the coil temperature.

[0144] The electric heating activation module 220 is configured to control the indoor unit to activate the electric heating function when the temperatures of all coils are lower than a first preset threshold value within a first preset time period.

[0145] The operating frequency control module 230 is configured to adjust the operating frequency of the outdoor unit based on the outlet air temperature.

[0146] The coil temperature is obtained when the air conditioner is in high-temperature self-cleaning mode. The air outlet temperature is obtained when the indoor unit's electric heating function is activated. The first preset threshold is the lower limit of the normal coil temperature range in high-temperature self-cleaning mode.

[0147] Specifically, the coil temperature monitoring module 210 , the electric heating start module 220 and the operation frequency control module 230 are electrically connected in sequence.

[0148] After the coil temperature monitoring module 210 determines that the air conditioner starts the high-temperature self-cleaning mode based on the operating information fed back by each component according to the activation instruction, it continuously receives the coil temperature collected by the sensor module set at the coil.

[0149] The electric heating start module 220 compares each coil temperature monitored within a first preset time period with a first preset threshold.

[0150] If the coil temperature at all times is less than the first preset threshold, an activation instruction is generated and distributed to the indoor unit.

[0151] The operating frequency control module 230 determines that the electric heating function has been started based on the operating information fed back by the electric auxiliary heating element, uses the outlet air temperature collected by the sensor module set at the air outlet to obtain the frequency adjustment strategy corresponding to the outlet air temperature, and encapsulates the adjustment amount and adjustment frequency indicated by the frequency adjustment strategy into a control instruction and sends it to the outdoor unit.

[0152] Optionally, the operating frequency control module 230 includes a partition unit, a first control unit, a second control unit, and a third control unit, wherein:

[0153] The partitioning unit is used to divide the range of the outlet air temperature greater than the second preset threshold into intervals when it is determined that the outlet air temperature is greater than or equal to the second preset threshold, and obtain at least two outlet air temperature intervals.

[0154] The first control unit is configured to control the outdoor unit to increase the operating frequency if it is determined that the outlet air temperature is within the first outlet air temperature range.

[0155] The second control unit is configured to control the outdoor unit to maintain an operating frequency if it is determined that the outlet air temperature is within a second outlet air temperature range.

[0156] The third control unit is configured to control the outdoor unit to reduce the operating frequency if it is determined that the air outlet temperature is within a third air outlet temperature range.

[0157] Optionally, the first control unit includes a first variation determination subunit and a first control subunit, wherein:

[0158] The first variation determination subunit is configured to obtain a first frequency variation corresponding to the first target subinterval according to the first target subinterval corresponding to the outlet air temperature.

[0159] The first control subunit is configured to control the outdoor unit to increase the operating frequency based on the first frequency variation.

[0160] The first target sub-interval is obtained by dividing the first outlet air temperature interval. The first frequency change is greater than zero.

[0161] Optionally, the third control unit includes a second variation determination subunit and a second control subunit, wherein:

[0162] The second variation determination subunit is configured to obtain a second frequency variation corresponding to the second target subinterval according to the second target subinterval corresponding to the outlet air temperature.

[0163] The second control subunit is configured to control the outdoor unit to reduce the operating frequency based on the second frequency variation.

[0164] The second target sub-interval is obtained by dividing the third air outlet temperature interval; and the second frequency change is less than zero.

[0165] Optionally, the operating frequency control module 230 further includes a target operating frequency determination unit and a fourth control unit, wherein:

[0166] The target operating frequency determining unit is configured to determine the target operating frequency based on the air outlet temperature and the initial frequency of the outdoor unit when it is determined that the air outlet temperature is less than a second preset threshold.

[0167] The fourth control unit is configured to adjust the operating frequency of the outdoor unit based on the target operating frequency.

[0168] Optionally, the air conditioning control device further includes a coil temperature monitoring module and an electric heating shutoff module, wherein:

[0169] The coil temperature monitoring module is used to obtain the new coil temperature.

[0170] The electric heating shutoff module is used to control the indoor unit to shut off the electric heating function when each new coil temperature is greater than a third preset threshold within a second preset time period.

[0171] The third preset threshold is the upper limit of the normal temperature range of the coil in the high-temperature self-cleaning mode. The second preset time length is less than the first preset time length.

[0172] The air conditioning control device provided in an embodiment of the present invention is used to execute the above-mentioned air conditioning control method of the present invention. Its implementation method is consistent with the implementation method of the air conditioning control method provided by the present invention and can achieve the same beneficial effects, which will not be repeated here.

[0173] The embodiment of the present invention decides to turn on the electric heating function based on the coil temperature. By subsequently monitoring the outlet air temperature, the outdoor unit is controlled to dynamically adjust the operating frequency, thereby analyzing the heating load according to the coil temperature. After using electric heating for heat compensation, the outlet air temperature is used to control the frequency change, so that the air conditioner always maintains the outlet air temperature at 56°C during the defrost stage, meeting the sterilization requirements of high-temperature self-cleaning in terms of temperature and time, and enhancing the self-cleaning effect.

[0174] Figure 3 Schematic diagram of the structure of the air conditioner provided by the present invention. Figure 3As shown, the air conditioner includes an indoor unit 310 and an outdoor unit 320. The indoor unit 310 is provided with a control processor 311, a first sensor module 312 and a second sensor module 313. The first sensor module 312 is arranged at the coil of the indoor unit 310, and the second sensor module 313 is arranged at the air outlet of the indoor unit 310; it also includes a memory and a program or instruction stored in the memory and executable on the control processor. When the program or instruction is executed by the control processor 311, a control method of the air conditioner is executed.

[0175] Specifically, the air conditioner consists of an indoor unit 310 and an outdoor unit 320. A control processor 311, which can be integrated into the control development board of the indoor unit 310 as a chip or microprocessor, communicates with the indoor unit 310, the first sensor module 312, and the second sensor module 313 to control the electric heating and operating frequency in the high-temperature self-cleaning mode.

[0176] It is also necessary to set a first sensor module 312 at the coil in the indoor unit 310 to collect the coil temperature in real time and feed it back to the control processor 311 for logical judgment of the electric heating function switch control of the indoor unit 310.

[0177] It is also necessary to set a second sensor module 313 at the air outlet of the indoor unit 310 to collect the outlet air temperature in real time and feed it back to the control processor 311 for logical judgment of the operating frequency control of the outdoor unit 320.

[0178] The embodiment of the present invention does not specifically limit the number of temperature sensors in the first sensing module 312 and the second sensing module 313 .

[0179] Optionally, the first sensor module 312 may include a temperature sensor provided at the indoor unit coil, and the air conditioner control device uses the temperature data collected by the temperature sensor as the coil temperature, and the second sensor module 313 is similar.

[0180] Optionally, the first sensor module 312 may include multiple temperature sensors evenly spaced at the indoor unit coil. The air conditioner control device uses the temperature data collected by each temperature sensor to add and average the temperature data to obtain the current coil temperature, and the second sensor module 313 is similar.

[0181] The control processor 311 uses wireless communication technology to transmit signals with the indoor unit 310, the first sensor module 312 and the second sensor module 313 respectively.

[0182] Among them, wireless communication technology includes but is not limited to WIFI wireless cellular signals (2G, 3G, 4G, 5G), Bluetooth, Zigbee and other methods, which are not specifically limited in the embodiments of the present invention.

[0183] The air conditioner of the present invention further includes a memory and a program or instruction stored in the memory and executable by a control processor 311. The control processor 311 can call the logic instructions in the memory to execute the air conditioner control method of the present invention, which includes: obtaining the coil temperature; controlling the indoor unit to activate the electric heating function if all coil temperatures are less than a first preset threshold value within a first preset time period; and adjusting the operating frequency of the outdoor unit based on the outlet air temperature; wherein the coil temperature is obtained when the air conditioner is in high-temperature self-cleaning mode; the outlet air temperature is obtained after the indoor unit activates the electric heating function; and the first preset threshold value is the lower limit of the normal temperature range of the coil in high-temperature self-cleaning mode.

[0184] In addition, the logic instructions in the above-mentioned memory 830 can be implemented in the form of a software functional unit and can be stored in a computer-readable storage medium when sold or used as an independent product. Based on this understanding, the technical solution of the present invention, 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. The computer software product is stored in a storage medium and includes several instructions for enabling a computer device (which can be a personal computer, server, or 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: various media that can store program codes, such as a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk.

[0185] The embodiment of the present invention decides to turn on the electric heating function based on the coil temperature. By subsequently monitoring the outlet air temperature, the outdoor unit is controlled to dynamically adjust the operating frequency, thereby analyzing the heating load according to the coil temperature. After using electric heating for heat compensation, the outlet air temperature is used to control the frequency change, so that the air conditioner always maintains the outlet air temperature at 56°C during the defrost stage, meeting the sterilization requirements of high-temperature self-cleaning in terms of temperature and time, and enhancing the self-cleaning effect.

[0186] On the other hand, the present invention also provides a computer program product, which includes a computer program, which 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-conditioning control method provided by the above methods, which includes: obtaining the coil temperature; when all coil temperatures are less than a first preset threshold within a first preset time period, controlling the indoor unit to activate the electric heating function; adjusting the operating frequency of the outdoor unit based on the outlet air temperature; wherein the coil temperature is obtained when the air conditioner starts the high-temperature self-cleaning mode; the outlet air temperature is obtained after the indoor unit activates the electric heating function; the first preset threshold is the lower limit of the normal temperature range of the coil in the high-temperature self-cleaning mode.

[0187] 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 conditioning control method provided by the above-mentioned methods, the method comprising: obtaining the coil temperature; controlling the indoor unit to activate the electric heating function when all coil temperatures are less than a first preset threshold value within a first preset time period; adjusting the operating frequency of the outdoor unit based on the air outlet temperature; wherein the coil temperature is obtained when the air conditioner starts the high-temperature self-cleaning mode; the air outlet temperature is obtained after the indoor unit activates the electric heating function; the first preset threshold value is the lower limit of the normal temperature range of the coil in the high-temperature self-cleaning mode.

[0188] The device embodiments described above are merely illustrative. The units described as separate components may or may not be physically separate, and the components shown as units may or may not be physical units, i.e., they may be located in one location or distributed across multiple network units. Some or all of the modules may be selected based on actual needs to achieve the objectives of the present embodiment. Persons of ordinary skill in the art will be able to understand and implement the present invention without inventive effort.

[0189] Through the description of the above embodiments, those skilled in the art can clearly understand that each embodiment can be implemented by means of software plus a necessary general hardware platform, or of course, by hardware. Based on this understanding, the essence of the above technical solution or the part that contributes to the existing technology can be embodied in the form of a software product. The computer software product can be stored in a computer-readable storage medium, such as ROM / RAM, a magnetic disk, an optical disk, etc., and includes a number of instructions for enabling 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 certain parts of the embodiments.

[0190] 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 various embodiments of the present invention.

Claims

1. An air conditioning control method, characterized in that: include: Get coil temperature; When the temperatures of all the coils are lower than a first preset threshold value within a first preset time period, controlling the indoor unit to activate the electric heating function; Based on the outlet air temperature, the operating frequency of the outdoor unit is adjusted, and the outlet air temperature is used to control the frequency change so that the air conditioner always maintains the outlet air temperature at a second preset threshold during the defrost stage; The coil temperature is obtained when the air conditioner is in high-temperature self-cleaning mode, and the coil temperature is periodically collected at specified time intervals. The air outlet temperature is obtained after the electric heating function of the indoor unit is activated. The first preset threshold is the lower limit of the normal temperature range of the coil in the high-temperature self-cleaning mode, and the second preset threshold is the optimal air outlet temperature in the high-temperature self-cleaning mode. The step of adjusting the operating frequency of the outdoor unit based on the outlet air temperature includes: When it is determined that the outlet air temperature is greater than or equal to the second preset threshold, dividing the outlet air temperature range greater than the second preset threshold into intervals to obtain at least two outlet air temperature intervals; If it is determined that the outlet air temperature is within the first outlet air temperature range, controlling the outdoor unit to increase the operating frequency; If it is determined that the outlet air temperature is within the second outlet air temperature range, controlling the outdoor unit to maintain the operating frequency; If it is determined that the outlet air temperature is in the third outlet air temperature range, the outdoor unit is controlled to reduce the operating frequency.

2. The air conditioning control method according to claim 1, characterized in that: If it is determined that the air outlet temperature is within the first air outlet temperature range, controlling the outdoor unit to increase the operating frequency includes: obtaining a first frequency change corresponding to the first target subinterval according to the first target subinterval corresponding to the outlet air temperature; Based on the first frequency change, controlling the outdoor unit to increase the operating frequency; The first target sub-interval is obtained by dividing the first air outlet temperature interval; and the first frequency change is greater than zero.

3. The air conditioning control method according to claim 1, wherein: If it is determined that the outlet air temperature is within the third outlet air temperature range, controlling the outdoor unit to reduce the operating frequency includes: obtaining a second frequency change corresponding to the second target subinterval according to the second target subinterval corresponding to the outlet air temperature; Based on the second frequency change, controlling the outdoor unit to reduce the operating frequency; The second target sub-interval is obtained by dividing the third air outlet temperature interval; and the second frequency change is less than zero.

4. The air conditioning control method according to claim 1, wherein: The adjusting the operating frequency of the outdoor unit based on the air outlet temperature further includes: When it is determined that the air outlet temperature is less than a second preset threshold, determining a target operating frequency based on the air outlet temperature and the initial frequency of the outdoor unit; Based on the target operating frequency, the operating frequency of the outdoor unit is adjusted.

5. The air conditioning control method according to claim 1, characterized in that: After adjusting the operating frequency of the outdoor unit based on the air outlet temperature, the method further includes: Get the new coil temperature; When the temperature of each of the new coils is greater than a third preset threshold value within a second preset time period, controlling the indoor unit to turn off the electric heating function; The third preset threshold is the upper limit of the normal temperature range of the coil in the high-temperature self-cleaning mode; and the second preset time is less than the first preset time.

6. An air conditioning control device, characterized in that: include: Coil temperature monitoring module, used to obtain coil temperature; An electric heating activation module is configured to control the indoor unit to activate the electric heating function when the temperatures of all the coils are lower than a first preset threshold value within a first preset time period; An operating frequency control module is used to adjust the operating frequency of the outdoor unit based on the outlet air temperature, and the outlet air temperature is used to control the frequency change so that the air conditioner always maintains the outlet air temperature at a second preset threshold during the defrost stage; The coil temperature is obtained when the air conditioner is in high-temperature self-cleaning mode, and is periodically collected at specified time intervals. The outlet air temperature is obtained after the indoor unit activates the electric heating function. The first preset threshold is the lower limit of the normal temperature range of the coil in the high-temperature self-cleaning mode. The second preset threshold is the optimal outlet air temperature in the high-temperature self-cleaning mode. The step of adjusting the operating frequency of the outdoor unit based on the outlet air temperature includes: When it is determined that the outlet air temperature is greater than or equal to the second preset threshold, dividing the outlet air temperature range greater than the second preset threshold into intervals to obtain at least two outlet air temperature intervals; If it is determined that the outlet air temperature is within the first outlet air temperature range, controlling the outdoor unit to increase the operating frequency; If it is determined that the outlet air temperature is within the second outlet air temperature range, controlling the outdoor unit to maintain the operating frequency; If it is determined that the outlet air temperature is in the third outlet air temperature range, the outdoor unit is controlled to reduce the operating frequency.

7. An air conditioner, characterized in that: The invention comprises an indoor unit and an outdoor unit, wherein the indoor unit is provided with a control processor, a first sensor module and a second sensor module, the first sensor module is provided at the coil of the indoor unit, and the second sensor module is provided at the air outlet of the indoor unit; the invention also comprises a memory and a program or instruction stored in the memory and executable on the control processor, wherein the program or instruction, when executed by the control processor, executes the air conditioning control method as claimed in any one of claims 1 to 5.

8. 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 conditioning control method according to any one of claims 1 to 5 is implemented.

9. A computer program product comprising a computer program, characterized in that When the computer program is executed by a processor, the air conditioning control method according to any one of claims 1 to 5 is implemented.

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