Method and device for controlling operation frequency of compressor of air conditioner

Abstract

The invention discloses a method and a device for controlling the running frequency of a compressor of an air conditioner. The method comprises the steps that when it is determined that the air conditioner operates in a refrigeration mode, a first temperature difference value between the indoor environment temperature of a target room where the air conditioner is located and the set temperature is obtained; when it is determined that the first temperature difference value is smaller than or equal to the first temperature difference threshold value, a compressor of the air conditioner is triggered to operate in an ultralow-frequency operation mode, and the first temperature difference value is continuously obtained; the operation mode of the compressor is determined according to the size relation between the first temperature difference value and a first temperature difference threshold value and between the first temperature difference value and a second temperature difference threshold value, and the first temperature difference threshold value is larger than the second temperature difference threshold value; and the compressor is controlled to operate according to the operation mode, so that the drying speed of an indoor heat exchanger of the air conditioner reaches the preset drying speed. The technical problem that quick drying of the evaporator in the normal refrigeration mode cannot be achieved through frequency conversion control of the air conditioner in the related technology is solved.

Description

Technical Field

[0001] This invention relates to the field of home appliance control technology, and more specifically, to a method and apparatus for controlling the operating frequency of an air conditioner compressor. Background Technology

[0002] During air conditioning cooling operation, the indoor unit's evaporator operates at a low temperature below the indoor air dew point, resulting in condensation on the heat exchanger. During indoor air circulation, organic pollutants such as dust are adsorbed and desorbed by the air conditioner's evaporator. Humidity, ambient temperature, and organic matter in the dust layer create a complex internal environment, making it difficult to control room air quality and leading to a poor user experience.

[0003] Existing technologies cannot prevent air conditioners from producing condensate during the cooling process. Some technologies use hydrophobic fins to remove condensate, but the condensate can form water bridges between the fins, leading to reduced heat exchange capacity and water blowing from the air outlet. Other technologies try to prevent condensate by keeping the internal pipe temperature above the dew point temperature, but the dew point temperature is difficult to predict directly under different operating conditions, making it impossible to control all operating conditions simultaneously. At the same time, the cooling output of the air conditioner is greatly reduced, and the cooling effect is extremely poor when the room load is high, failing to meet the user's comfort needs.

[0004] There is currently no effective solution to the above problems. Summary of the Invention

[0005] This invention provides a method and apparatus for controlling the operating frequency of an air conditioner compressor, thereby at least solving the technical problem in the related art that variable frequency control of air conditioners cannot achieve rapid drying of the evaporator in normal cooling mode.

[0006] According to one aspect of the present invention, a method for controlling the operating frequency of an air conditioner compressor is provided, comprising: when it is determined that the air conditioner is operating in a cooling mode, acquiring a first temperature difference between the indoor ambient temperature of the target room where the air conditioner is located and a set temperature; when it is determined that the first temperature difference is less than or equal to a first temperature difference threshold, triggering the air conditioner compressor to operate in an ultra-low frequency operating mode, and continuously acquiring the first temperature difference, wherein the ultra-low frequency operating mode is a mode in which the operating frequency of the compressor is lower than the first frequency threshold; determining the operating mode of the compressor according to the magnitude relationship between the first temperature difference and the first temperature difference threshold and a second temperature difference threshold, wherein the first temperature difference threshold is greater than the second temperature difference threshold; controlling the compressor to operate according to the operating mode, so that the drying speed of the indoor heat exchanger of the air conditioner reaches a predetermined drying speed.

[0007] Optionally, triggering the compressor of the air conditioner to operate in an ultra-low frequency operating mode includes: after determining that the compressor has entered the ultra-low frequency operating mode, acquiring the current operating frequency of the compressor and the outdoor ambient temperature of the target room; when determining that the current operating frequency needs to be corrected based on the relationship between the outdoor ambient temperature and a first outdoor temperature threshold and a second outdoor temperature threshold, determining a first correction value for the current operating frequency, wherein the first outdoor temperature threshold is less than the second outdoor temperature threshold; correcting the current operating frequency according to the first correction value to obtain a first corrected frequency; and determining the operating frequency of the compressor and the indoor fan speed of the air conditioner based on the relationship between the first corrected frequency and a preset frequency.

[0008] Optionally, determining whether the current operating frequency needs to be corrected based on the relationship between the outdoor ambient temperature and the first outdoor temperature threshold and the second outdoor temperature threshold includes: determining that the current operating frequency needs to be corrected when the outdoor ambient temperature is less than the first outdoor temperature threshold, or when the outdoor ambient temperature is greater than or equal to the first outdoor temperature threshold and less than the second outdoor temperature threshold, wherein the first correction frequency corresponding to the outdoor ambient temperature being less than the first outdoor temperature threshold is greater than the first correction frequency corresponding to the outdoor ambient temperature being greater than or equal to the first outdoor temperature threshold and less than the second outdoor temperature threshold.

[0009] Optionally, correcting the current operating frequency according to the correction value to obtain a first corrected frequency includes: determining the frequency difference between the current operating frequency and the first correction value as the first corrected frequency.

[0010] Optionally, determining the operating frequency of the compressor and the speed of the indoor fan of the air conditioner based on the relationship between the first corrected frequency and the preset frequency includes: when the first corrected frequency is less than the preset frequency, determining the operating frequency as the preset frequency and reducing the speed of the indoor fan; when the first corrected frequency is greater than or equal to the preset frequency, determining the operating frequency as the first corrected frequency and reducing the speed of the indoor fan.

[0011] Optionally, determining the compressor's operating mode based on the relationship between the first temperature difference and the first temperature difference threshold and the second temperature difference threshold includes: when the first temperature difference is less than the second temperature difference threshold, determining the operating mode as: exiting the ultra-low frequency operating mode and entering a high frequency operating mode, wherein the high frequency operating mode is a mode in which the compressor's operating frequency is higher than the second frequency threshold; when the first temperature difference is greater than or equal to the second temperature difference threshold and less than the first temperature difference threshold, determining the operating mode as: maintaining the ultra-low frequency operating mode; and when the first temperature difference is greater than or equal to the first temperature difference threshold, determining the operating mode based on the relationship between the first correction frequency and the second temperature difference threshold.

[0012] Optionally, when the first temperature difference is determined to be greater than or equal to the first temperature difference threshold, the operating mode is determined according to the relationship between the first correction frequency and the frequency threshold, including: when the first correction frequency is greater than the frequency threshold, determining the operating mode as: exiting the ultra-low frequency operating mode; when the first correction frequency is less than or equal to the frequency threshold, controlling the first correction frequency to increase by a preset frequency every predetermined period, and cyclically correcting the operating frequency of the compressor according to the change of the first temperature difference, so that the indoor ambient temperature is within the preset temperature range.

[0013] Optionally, when the operating mode is the high-frequency operating mode, controlling the compressor to operate according to the operating mode includes: acquiring the first correction frequency of the compressor and the outdoor ambient temperature of the target room; when it is determined that the first correction frequency needs to be corrected based on the outdoor ambient temperature, determining a second correction value for the first correction frequency; using the second correction value to correct the first correction frequency to obtain a second correction frequency; controlling the compressor to operate according to the second correction frequency, and controlling the indoor fan speed of the air conditioner to remain unchanged.

[0014] Optionally, the compressor operating frequency control method of the air conditioner further includes: calculating the cumulative operating time of the compressor in the high-frequency operating mode; and controlling the compressor to stop when the cumulative operating time reaches a preset cumulative operating time.

[0015] According to another aspect of the present invention, a compressor operating frequency control device for an air conditioner is also provided, comprising: an acquisition module, configured to acquire a first temperature difference between the indoor ambient temperature of the target room where the air conditioner is located and a set temperature when it is determined that the air conditioner is operating in a cooling mode; a triggering module, configured to trigger the compressor of the air conditioner to operate in an ultra-low frequency operating mode when it is determined that the first temperature difference is less than or equal to a first temperature difference threshold, and continuously acquire the first temperature difference, wherein the ultra-low frequency operating mode is a mode in which the operating frequency of the compressor is lower than the first frequency threshold; a determination module, configured to determine the operating mode of the compressor according to the magnitude relationship between the first temperature difference and the first temperature difference threshold and a second temperature difference threshold, wherein the first temperature difference threshold is greater than the second temperature difference threshold; and a control module, configured to control the compressor to operate according to the operating mode so that the drying speed of the indoor heat exchanger of the air conditioner reaches a predetermined drying speed.

[0016] Optionally, the triggering module includes: a first acquisition unit, configured to acquire the current operating frequency of the compressor and the outdoor ambient temperature of the target room after determining that the compressor has entered the ultra-low frequency operation mode; a first determination unit, configured to determine a first correction value for the current operating frequency when it is determined that the current operating frequency needs to be corrected based on the relationship between the outdoor ambient temperature and a first outdoor temperature threshold and a second outdoor temperature threshold, wherein the first outdoor temperature threshold is less than the second outdoor temperature threshold; a first correction unit, configured to correct the current operating frequency according to the first correction value to obtain a first corrected frequency; and a second determination unit, configured to determine the operating frequency of the compressor and the indoor fan speed of the air conditioner based on the relationship between the first corrected frequency and a preset frequency.

[0017] Optionally, the first determining unit includes: a first determining subunit, configured to determine that the current operating frequency needs to be corrected when the outdoor ambient temperature is less than the first outdoor temperature threshold, or when the outdoor ambient temperature is greater than or equal to the first outdoor temperature threshold and less than the second outdoor temperature threshold, wherein the first correction frequency corresponding to the outdoor ambient temperature being less than the first outdoor temperature threshold is greater than the first correction frequency corresponding to the outdoor ambient temperature being greater than or equal to the first outdoor temperature threshold and less than the second outdoor temperature threshold.

[0018] Optionally, the first correction unit includes: a second determining subunit, configured to determine the frequency difference between the current operating frequency and the first correction value as the first correction frequency.

[0019] Optionally, the second determining unit includes: a third determining subunit, configured to determine the operating frequency as the preset frequency and reduce the internal fan speed when the first corrected frequency is less than the preset frequency; and a fourth determining subunit, configured to determine the operating frequency as the first corrected frequency and reduce the internal fan speed when the first corrected frequency is greater than or equal to the preset frequency.

[0020] Optionally, the determining module includes: a third determining unit, configured to determine the operating mode as follows when the first temperature difference is less than the second temperature difference threshold: exiting the ultra-low frequency operating mode and entering a high frequency operating mode, wherein the high frequency operating mode is a mode in which the operating frequency of the compressor is higher than the second frequency threshold; a fourth determining unit, configured to determine the operating mode as follows: maintaining the ultra-low frequency operating mode when the first temperature difference is greater than or equal to the second temperature difference threshold and less than the first temperature difference threshold; and a fifth determining unit, configured to determine the operating mode based on the relationship between the first correction frequency and the second temperature difference threshold when the first temperature difference is greater than or equal to the first temperature difference threshold.

[0021] Optionally, the fifth determining unit includes: a fifth determining subunit, configured to determine the operating mode as: exiting the ultra-low frequency operating mode when the first correction frequency is greater than the frequency threshold; and a control subunit, configured to control the first correction frequency to increase by a preset frequency at predetermined intervals when the first correction frequency is less than or equal to the frequency threshold, and to cyclically correct the operating frequency of the compressor according to the change of the first temperature difference, so that the indoor ambient temperature is within a preset temperature range.

[0022] Optionally, the control module includes: a second acquisition unit, configured to acquire the first correction frequency of the compressor and the outdoor ambient temperature of the target room; a sixth determination unit, configured to determine a second correction value for the first correction frequency when it is determined that the first correction frequency needs to be corrected based on the outdoor ambient temperature; a second correction unit, configured to correct the first correction frequency using the second correction value to obtain a second correction frequency; and a first control unit, configured to control the compressor to operate according to the second correction frequency and control the indoor fan speed of the air conditioner to remain constant.

[0023] Optionally, the compressor operating frequency control device of the air conditioner further includes: a statistics unit for calculating the cumulative operating time of the compressor in the high-frequency operating mode; and a second control unit for controlling the compressor to stop when the cumulative operating time reaches a preset cumulative operating time.

[0024] According to another aspect of the present invention, an air conditioner is also provided, which uses the compressor operating frequency control method of any one of the above-described air conditioners.

[0025] According to another aspect of the present invention, a computer-readable storage medium is also provided, the computer-readable storage medium including a stored program, wherein the program executes the compressor operating frequency control method of the air conditioner described in any one of the above embodiments.

[0026] According to another aspect of the present invention, a processor is also provided, the processor being configured to run a program, wherein the program, when running, executes the compressor operating frequency control method for an air conditioner as described in any one of the above embodiments.

[0027] According to another aspect of the present invention, a computer program product is also provided, including computer instructions, which, when executed by a processor, perform the compressor operating frequency control method for an air conditioner as described above.

[0028] In this embodiment of the invention, when it is determined that the air conditioner is operating in cooling mode, a first temperature difference between the indoor ambient temperature of the target room where the air conditioner is located and the set temperature is obtained; when it is determined that the first temperature difference is less than or equal to a first temperature difference threshold, the compressor of the air conditioner is triggered to operate in ultra-low frequency operation mode, and the first temperature difference is continuously obtained, wherein the ultra-low frequency operation mode is a mode in which the operating frequency of the compressor is lower than the first frequency threshold; the operating mode of the compressor is determined according to the relationship between the first temperature difference and the first temperature difference threshold and the second temperature difference threshold, wherein the first temperature difference threshold is greater than the second temperature difference threshold; the compressor is controlled to operate according to the operating mode so that the drying speed of the indoor heat exchanger of the air conditioner reaches the predetermined drying speed. The technical solution provided by this invention achieves the following: before the air conditioner compressor stops at the set temperature, it first controls the compressor to run at a low frequency to achieve low-temperature pre-drying of the evaporator; then, it controls the compressor to run at a high frequency for a short period to increase the system's high and low pressure difference and refrigerant circulation flow. This allows more refrigerant to enter the indoor heat exchanger after the compressor stops, suppressing the temperature rise of the inner pipe at the moment of shutdown and accelerating the temperature rise of the outer pipe. The pipe temperature rises rapidly just as the condensate in the indoor heat exchanger is about to dry. This achieves the technical effect of rapid drying, reducing the concentration of unpleasant odors and pollutants diffused into the room, improving the efficiency and performance of the air conditioner, and thus solving the technical problem in related technologies where the frequency conversion control of air conditioners cannot achieve rapid drying of the evaporator in normal cooling mode. Attached Figure Description

[0029] The accompanying drawings, which are included to provide a further understanding of the invention and form part of this application, illustrate exemplary embodiments of the invention and, together with their description, serve to explain the invention and do not constitute an undue limitation thereof. In the drawings:

[0030] Figure 1 This is a hardware structure block diagram of a mobile terminal for a compressor operating frequency control method for an air conditioner according to an embodiment of the present invention.

[0031] Figure 2 This is a flowchart of a compressor operating frequency control method for an air conditioner according to an embodiment of the present invention;

[0032] Figure 3 This is a schematic diagram of the air conditioning cooling ultra-low frequency operation control logic according to an embodiment of the present invention;

[0033] Figure 4 This is a schematic diagram of the high-frequency operation control logic for air conditioning cooling according to an embodiment of the present invention;

[0034] Figure 5 This is a schematic diagram of a compressor operating frequency control device for an air conditioner according to an embodiment of the present invention. Detailed Implementation

[0035] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present invention.

[0036] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this invention are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of the invention described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover a non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0037] As described in the background section, variable frequency control in related technologies cannot achieve rapid drying of the evaporator in normal cooling mode. To address these shortcomings, embodiments of the present invention provide a method and apparatus for controlling the compressor operating frequency of an air conditioner, an air conditioner, a computer-readable storage medium, a processor, and a computer program product.

[0038] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

[0039] The methods and embodiments provided in this invention can be executed on a mobile terminal, a computer terminal, or a similar computing device. Taking running on a mobile terminal as an example, Figure 1 This is a hardware structure block diagram of a mobile terminal for a compressor operating frequency control method for an air conditioner according to an embodiment of the present invention. Figure 1 As shown, a mobile terminal may include one or more ( Figure 1 Only one is shown in the diagram. A processor 102 (which may include, but is not limited to, a microprocessor MCU or a programmable logic device FPGA, etc.) and a memory 104 for storing data are also shown. The mobile terminal may further include a transmission device 106 for communication functions and an input / output device 108. Those skilled in the art will understand that... Figure 1 The structure shown is for illustrative purposes only and does not limit the structure of the mobile terminal described above. For example, the mobile terminal may also include components that are more... Figure 1 The more or fewer components shown, or having the same Figure 1 The different configurations shown.

[0040] The memory 104 can be used to store computer programs, such as application software programs and modules, like the computer program corresponding to the compressor operating frequency control method of the air conditioner in this embodiment of the invention. The processor 102 executes various functional applications and data processing by running the computer program stored in the memory 104, thereby implementing the above-described method. The memory 104 may include high-speed random access memory, and may also include non-volatile memory, such as one or more magnetic storage devices, flash memory, or other non-volatile solid-state memory. In some instances, the memory 104 may further include memory remotely located relative to the processor 102, and these remote memories can be connected to the mobile terminal via a network. Examples of the aforementioned networks include, but are not limited to, the Internet, corporate intranets, local area networks, mobile communication networks, and combinations thereof. The transmission device 106 is used to receive or send data via a network. Specific examples of the aforementioned networks may include wireless networks provided by the mobile terminal's communication provider. In one example, the transmission device 106 includes a network interface controller (NIC), which can be connected to other network devices via a base station to communicate with the Internet. In one example, the transmission device 106 may be a radio frequency (RF) module, which is used to communicate with the Internet wirelessly.

[0041] According to an embodiment of the present invention, a method embodiment for controlling the operating frequency of an air conditioner compressor is provided. It should be noted that the steps shown in the flowchart in the accompanying drawings can be executed in a computer system such as a set of computer-executable instructions. Furthermore, although a logical order is shown in the flowchart, in some cases, the steps shown or described may be executed in a different order than that shown here.

[0042] Figure 2 This is a flowchart of a compressor operating frequency control method for an air conditioner according to an embodiment of the present invention, as shown below. Figure 2 As shown, the method includes the following steps:

[0043] Step S202: When it is determined that the air conditioner is operating in cooling mode, the first temperature difference between the indoor ambient temperature of the target room where the air conditioner is located and the set temperature is obtained.

[0044] It should be noted that the air conditioner mentioned above is a device used to regulate indoor temperature and humidity. It regulates the temperature of indoor air by circulating airflow. Air conditioners typically include components such as compressors, condensers, evaporators, and fans, and use refrigerant circulation to achieve the cooling effect.

[0045] In this embodiment, obtaining the first temperature difference between the indoor ambient temperature of the target room where the air conditioner is located and the set temperature can help the system determine the difference between the current ambient temperature and the set temperature, thereby adjusting the operating frequency of the compressor so that the air conditioner can more effectively regulate the indoor temperature, improve energy efficiency and energy saving. By monitoring the first temperature difference, the system can adjust the operating frequency of the compressor as needed to achieve more precise temperature control and improve the operating efficiency and comfort of the air conditioner.

[0046] Figure 3 This is a schematic diagram of the ultra-low frequency operation control logic for air conditioning cooling according to an embodiment of the present invention, as shown below. Figure 3 As shown, after the air conditioner starts cooling, it detects and records in real time the difference between the indoor ambient temperature Tn (i.e., the indoor ambient temperature of the target room) and the set temperature Ts, ΔT (i.e., the first temperature difference) = Tn - Ts.

[0047] Step S204: When it is determined that the first temperature difference is less than or equal to the first temperature difference threshold, the compressor of the air conditioner is triggered to operate in the ultra-low frequency operation mode and the first temperature difference is continuously acquired. The ultra-low frequency operation mode is a mode in which the operating frequency of the compressor is lower than the first frequency threshold.

[0048] It should be noted that the compressor in the air conditioner is an important component, which has the function of compressing and circulating refrigerant. The compressor draws in low-pressure refrigerant gas, compresses it into high-pressure gas, and raises its temperature. After being cooled by the condenser, the high-temperature and high-pressure gas becomes liquid refrigerant. Then, it releases pressure through the expansion valve, lowers its temperature, and forms low-temperature and low-pressure refrigerant gas, which enters the evaporator to absorb heat. This cycle is repeated continuously, thereby achieving the cooling effect of the air conditioner.

[0049] In this embodiment, when the first temperature difference is less than or equal to the first temperature difference threshold, the compressor is triggered to enter the ultra-low frequency operation mode. By flexibly adjusting the operating frequency of the compressor according to the actual situation, the energy efficiency ratio of the air conditioner can be improved, the equipment life can be extended, and the user's comfort experience can be enhanced. At the same time, continuous monitoring of the first temperature difference can help the air conditioner to operate effectively in energy-saving conditions under low load or low temperature difference, thereby reducing energy consumption and operating costs.

[0050] like Figure 3 As shown, after the air conditioner starts cooling, it determines the relationship between the temperature difference ΔT and the preset value ΔT1 (i.e., the first temperature difference threshold), where ΔT1 is [-3℃, 2℃]: 1) If ΔT is greater than ΔT1, that is, the room temperature is higher than the set temperature, then the current state is maintained and operation continues; 2) If ΔT is less than or equal to ΔT1, that is, the room temperature is close to the set temperature, then the air conditioner enters the ultra-low frequency operation mode.

[0051] Step S206: Determine the compressor's operating mode based on the relationship between the first temperature difference value and the first temperature difference threshold and the second temperature difference threshold, wherein the first temperature difference threshold is greater than the second temperature difference threshold.

[0052] In this embodiment, the compressor's operating mode is determined based on the relationship between the first temperature difference value, the first temperature difference threshold, and the second temperature difference threshold. This helps the system flexibly adjust the compressor's operating frequency according to the real-time temperature difference, thereby achieving more efficient energy consumption control and temperature regulation. By reasonably controlling the compressor's operating mode, energy consumption can be minimized while ensuring comfort, thus improving the air conditioner's energy efficiency ratio and achieving the goal of energy conservation and emission reduction.

[0053] Step S208: Control the compressor to operate in the operating mode so that the drying speed of the indoor heat exchanger of the air conditioner reaches the predetermined drying speed.

[0054] It should be noted that the indoor heat exchanger mentioned above generally refers to the heat exchanger in the indoor unit, also known as the evaporator. It is an important component of the air conditioner, and its main function is to absorb heat from the indoor air, cool the air, and lower its temperature. When the air conditioner is working, the refrigerant in the indoor heat exchanger evaporates, absorbs heat, and carries the heat away, thereby cooling the indoor air.

[0055] In this embodiment, by controlling the operating frequency of the compressor, the cooling and dehumidification functions of the air conditioner can be effectively adjusted. The operating mode of the compressor can be adjusted according to the current environmental conditions and needs to ensure that the drying speed of the indoor heat exchanger reaches the predetermined drying speed, thereby improving the drying effect of the indoor air and maintaining a comfortable indoor environment.

[0056] As described above, in this embodiment of the invention, when it is determined that the air conditioner is operating in cooling mode, a first temperature difference between the indoor ambient temperature of the target room where the air conditioner is located and the set temperature is obtained; when it is determined that the first temperature difference is less than or equal to a first temperature difference threshold, the air conditioner's compressor is triggered to operate in ultra-low frequency operation mode, and the first temperature difference is continuously obtained, wherein the ultra-low frequency operation mode is a mode in which the compressor's operating frequency is lower than the first frequency threshold; the compressor's operating mode is determined according to the relationship between the first temperature difference and the first temperature difference threshold and the second temperature difference threshold, wherein the first temperature difference threshold is greater than the second temperature difference threshold; the compressor is controlled. The system operates according to a set mode to ensure that the indoor heat exchanger of the air conditioner reaches the predetermined drying speed. This is achieved by controlling the compressor to run at a low frequency before it stops at the set temperature to pre-dry the evaporator at a low temperature, and then controlling the compressor to run at a high frequency for a short period to increase the system's high and low pressure difference and refrigerant circulation flow. This allows more refrigerant to enter the indoor heat exchanger after the compressor stops, suppressing the temperature rise of the inner pipe at the moment of shutdown and accelerating the temperature rise of the outer pipe. The pipe temperature rises rapidly just as the condensate in the indoor heat exchanger is about to dry, thus achieving rapid drying and reducing the concentration of unpleasant odors and pollutants diffused into the room. This improves the efficiency and performance of the air conditioner.

[0057] The technical solutions provided by the embodiments of the present invention solve the technical problem in the related art that the frequency conversion control of air conditioners cannot achieve rapid drying of the evaporator in normal cooling mode.

[0058] According to the above embodiments of the present invention, triggering the compressor of an air conditioner to operate in an ultra-low frequency operating mode includes: after determining that the compressor has entered the ultra-low frequency operating mode, acquiring the current operating frequency of the compressor and the outdoor ambient temperature of the target room; when determining that the current operating frequency needs to be corrected based on the relationship between the outdoor ambient temperature and a first outdoor temperature threshold and a second outdoor temperature threshold, determining a first correction value for the current operating frequency, wherein the first outdoor temperature threshold is less than the second outdoor temperature threshold; correcting the current operating frequency according to the first correction value to obtain a first corrected frequency; and determining the operating frequency of the compressor and the speed of the indoor fan of the air conditioner based on the relationship between the first corrected frequency and a preset frequency.

[0059] In this embodiment, by acquiring the current operating frequency of the compressor and the outdoor ambient temperature of the target room, the operating frequency of the compressor can be dynamically adjusted according to the actual situation to improve the efficiency and performance of the air conditioner. When it is determined that the current operating frequency needs to be corrected based on the relationship between the outdoor ambient temperature and the set threshold, it can effectively adapt to the working state under different environments, improve the applicability and stability of the air conditioner, and determine the operating frequency of the compressor and the speed of the indoor fan to achieve energy-saving operation and comfort adjustment of the air conditioner, thereby improving the user experience and energy utilization efficiency.

[0060] like Figure 3 As shown, the compressor's current operating frequency F0 and outdoor ambient temperature Tw are continuously detected and recorded. The compressor frequency correction value ΔF1 (i.e., the first correction value) is determined based on the temperature range of the outdoor ambient temperature Tw. The current operating frequency is corrected according to ΔF1 to obtain the first corrected frequency F1. The compressor's operating frequency and the indoor fan speed of the air conditioner are determined based on the relationship between F1 and the preset frequency Fd.

[0061] In the above embodiments of the present invention, determining the need to correct the current operating frequency based on the relationship between the outdoor ambient temperature and the first outdoor temperature threshold and the second outdoor temperature threshold includes: determining the need to correct the current operating frequency when the outdoor ambient temperature is less than the first outdoor temperature threshold, or when the outdoor ambient temperature is greater than or equal to the first outdoor temperature threshold and less than the second outdoor temperature threshold, wherein the first correction frequency corresponding to the outdoor ambient temperature being less than the first outdoor temperature threshold is greater than the first correction frequency corresponding to the outdoor ambient temperature being greater than or equal to the first outdoor temperature threshold and less than the second outdoor temperature threshold.

[0062] In this embodiment, when the outdoor ambient temperature is within a certain range, the operating frequency of the compressor needs to be corrected. When the outdoor ambient temperature is below the first threshold, the first correction frequency will be higher than the first correction frequency when the temperature is between the first and second thresholds. This can ensure that the compressor can operate more effectively at lower temperatures and can adjust the operating frequency of the compressor according to different ambient temperature conditions, thereby improving the efficiency and performance of the air conditioner.

[0063] Specifically, the compressor frequency correction value ΔF1 is determined based on the temperature range of the outdoor ambient temperature Tw. When Tw (i.e., the outdoor ambient temperature) is less than A (i.e., the first outdoor temperature threshold), ΔF1 is a; when Tw is greater than or equal to A and less than B (i.e., the second outdoor temperature threshold), ΔF1 is b; when Tw is greater than or equal to less than B, ΔF1 is 0, meaning the frequency is not corrected. Here, the preset temperature value A is less than B, the preset frequency value a is greater than b, and the higher the outdoor ambient temperature, the smaller the frequency correction value ΔF1.

[0064] In the above embodiments of the present invention, the current operating frequency is corrected according to the correction value to obtain the first corrected frequency, including: determining the frequency difference between the current operating frequency and the first correction value as the first corrected frequency.

[0065] In this embodiment, the first correction frequency can be used to adjust the frequency. By monitoring the frequency difference between the current operating frequency and the first correction value, the system can adjust the compressor's operating frequency according to this difference to ensure the stable operation of the air conditioner and achieve the expected effect. By continuously correcting the compressor's operating frequency, the system can better adapt to environmental changes and load demands, thereby improving the efficiency and performance of the air conditioner.

[0066] like Figure 3 As shown, after obtaining the frequency correction value ΔF1, the first correction frequency F1 of the compressor is calculated, which is the initial frequency F0 when entering the ultra-low frequency operation mode, minus the frequency correction value ΔF1.

[0067] In the above embodiments of the present invention, determining the operating frequency of the compressor and the speed of the indoor fan of the air conditioner based on the relationship between the first correction frequency and the preset frequency includes: when the first correction frequency is less than the preset frequency, determining the operating frequency as the preset frequency and reducing the speed of the indoor fan; when the first correction frequency is greater than or equal to the preset frequency, determining the operating frequency as the first correction frequency and reducing the speed of the indoor fan.

[0068] In this embodiment, when the first correction frequency is less than the preset frequency, the system can be kept running stably at the preset frequency by reducing the speed of the internal fan; when the first correction frequency is greater than or equal to the preset frequency, the operating frequency can be adjusted according to actual needs, and the speed of the internal fan can be reduced to keep the system running stably at a higher frequency. This ensures that the preset frequency is kept stable during operation and can be adjusted according to actual conditions to improve system efficiency and energy saving.

[0069] like Figure 3 As shown, the relationship between the compressor's first corrected frequency F1 and the preset value Fd (i.e., the preset frequency) is further determined: 1) If F1 is less than Fd, that is, the compressor frequency after correction is lower than the compressor's preset lower limit frequency, further frequency reduction may easily lead to extremely poor cooling effect, noise or reliability problems, then the corrected frequency F1 is taken from the lower limit frequency Fd, the compressor is adjusted to operate at this frequency, and the speed of the internal fan is reduced at the same time; 2) If F1 is greater than or equal to Fd, that is, the compressor corrected frequency is higher than the lower limit frequency, then the compressor operates at the corrected frequency F1, and the speed of the internal fan is reduced at the same time.

[0070] According to the above embodiments of the present invention, determining the compressor's operating mode based on the relationship between the first temperature difference and a first temperature difference threshold and a second temperature difference threshold includes: when the first temperature difference is determined to be less than the second temperature difference threshold, determining the operating mode as: exiting the ultra-low frequency operating mode and entering the high frequency operating mode, wherein the high frequency operating mode is a mode in which the compressor's operating frequency is higher than the second frequency threshold; when the first temperature difference is determined to be greater than or equal to the second temperature difference threshold and less than the first temperature difference threshold, determining the operating mode as: maintaining the ultra-low frequency operating mode; and when the first temperature difference is determined to be greater than or equal to the first temperature difference threshold, determining the operating mode based on the relationship between a first correction frequency and the corresponding frequency threshold.

[0071] In this embodiment, the operating frequency of the compressor is controlled according to the temperature difference to achieve energy saving and improve efficiency. By dynamically adjusting the operating frequency of the compressor, the cooling or heating effect of the air conditioner can be adjusted according to actual needs, thereby improving energy efficiency and comfort. At the same time, different operating modes are determined according to different temperature differences, which can effectively protect the compressor and extend the service life of the air conditioner.

[0072] like Figure 3 As shown, during the compressor's ultra-low frequency operation, the difference ΔT between the room temperature and the set temperature is detected and recorded in real time, and the relationship between ΔT and the preset values ​​ΔT1 (i.e., the first temperature difference threshold) and ΔT2 (i.e., the second temperature difference threshold) is determined, where ΔT1 > ΔT2: 1) If ΔT is less than ΔT2, that is, the indoor ambient temperature is significantly lower than the set temperature, the ultra-low frequency operation mode is exited and the high frequency operation mode is entered; 2) If ΔT is greater than or equal to ΔT2 and ΔT is less than ΔT1, that is, the room temperature is maintained near the set temperature, the current ultra-low frequency operation state is maintained, so that the inner pipe temperature is close to the dew point temperature, reducing the amount of evaporator condensate and achieving low-temperature pre-drying. 3) If ΔT is greater than or equal to ΔT1, that is, the room temperature is already higher than the set temperature, then continue to determine the relationship between the current compressor frequency F1 (i.e., the first correction frequency) and the preset value Fk (i.e., the frequency threshold), where Fk=F1+C*k, C≥3, Fk represents the target upper limit frequency after the air conditioner enters the ultra-low frequency operation mode (i.e., the upper limit frequency value of the compressor frequency to be corrected upward when the room temperature is significantly higher than the set temperature value after the compressor enters the ultra-low frequency operation mode), c represents the number of times the compressor frequency is corrected upward from the first correction frequency F1 after the air conditioner enters the ultra-low operation mode, and k represents the frequency amplitude of the compressor each time it is corrected upward.

[0073] In addition, C*k represents the frequency increase value after the compressor corrects upward 3 times. If the room temperature is still high after the compressor corrects upward 3 times, it means that the ultra-low frequency operation mode is not applicable and the air conditioner needs to be controlled to exit the ultra-low frequency operation mode to meet the cooling effect requirements.

[0074] In the above embodiments of the present invention, when it is determined that the first temperature difference is greater than or equal to the first temperature difference threshold, the operating mode is determined according to the relationship between the first correction frequency and the frequency threshold, including: when the first correction frequency is greater than the frequency threshold, the operating mode is determined to be: exit the ultra-low frequency operating mode; when the first correction frequency is less than or equal to the frequency threshold, the first correction frequency is controlled to increase by a preset frequency every predetermined period, and the operating frequency of the compressor is cyclically corrected according to the change of the first temperature difference, so that the indoor ambient temperature is within the preset temperature range.

[0075] In this embodiment, the indoor ambient temperature is maintained within a preset range by adjusting the compressor operating frequency according to changes in the indoor ambient temperature, thereby improving the energy efficiency and comfort of the air conditioner. At the same time, by exiting the ultra-low frequency operation mode, the air conditioner can be ensured to operate under normal working conditions, improving its stability and performance.

[0076] like Figure 3 As shown, the operating mode is determined by judging the relationship between the current compressor frequency F1 and the preset value Fk: 1) If F1 (i.e., the first correction frequency) is greater than Fk (i.e., the frequency threshold), that is, the current compressor frequency after correction is already high and the room temperature is higher than the set temperature, then exit the ultra-low frequency operating mode and enter the normal cooling mode to accelerate the indoor temperature drop; 2) If F1 is less than or equal to Fk, that is, the current compressor frequency is lower than the upper limit frequency of the ultra-low frequency operating mode, then the compressor frequency increases by k every a minutes (i.e., the predetermined cycle), the change of the room temperature and the set temperature is judged in a cycle and the compressor frequency is corrected in real time to control the room temperature within the set temperature range.

[0077] According to the above embodiments of the present invention, when the operating mode is a high-frequency operating mode, controlling the compressor to operate according to the operating mode includes: acquiring a first correction frequency of the compressor and the outdoor ambient temperature of the target room; when it is determined that the first correction frequency needs to be corrected based on the outdoor ambient temperature, determining a second correction value for the first correction frequency; correcting the first correction frequency using the second correction value to obtain a second correction frequency; controlling the compressor to operate according to the second correction frequency, and controlling the indoor fan speed of the air conditioner to remain unchanged.

[0078] In this embodiment, by correcting the first correction frequency, the operating frequency of the compressor can be adjusted according to the actual ambient temperature, thereby improving the overall performance and energy efficiency ratio of the air conditioner. Controlling the compressor to operate at the second correction frequency allows for more precise control of the air conditioner's cooling or heating effect, enhancing user comfort and energy saving. At the same time, maintaining a constant indoor fan speed ensures stable cooling or heating performance, improving the air conditioner's lifespan and operational stability. This allows for dynamic adjustment of the compressor's operating frequency based on changes in outdoor ambient temperature, achieving a more efficient cooling or heating effect.

[0079] Figure 4 This is a schematic diagram of the high-frequency operation control logic for air conditioning cooling according to an embodiment of the present invention, as shown below. Figure 4 As shown, after the air conditioner exits the ultra-low frequency operation mode, and the temperature difference ΔT between the room temperature and the set temperature meets the conditions for entering high-frequency operation, it immediately enters the high-frequency operation mode. It detects and records the compressor's current operating frequency F1 and the outdoor ambient temperature Tw. Based on the temperature range of Tw, it determines the compressor frequency correction value ΔF2 (i.e., the second correction value): 1) When Tw is less than A, ΔF2 is c; 2) When Tw is greater than or equal to A and less than B, ΔF2 is d; 3) When Tw is greater than or equal to less than B, ΔF2 is 0, meaning no frequency correction is performed. The preset temperature value A is less than B, and the preset frequency value c is less than d. Because the higher the outdoor ambient temperature, the higher the system balance pressure when the machine is stopped, and the easier it is for the internal pipe temperature to rise. At this time, the larger the frequency correction value ΔF2, the larger the system high and low pressure difference, the larger the refrigerant circulation flow, the higher the external pipe temperature after the machine is stopped, and the longer the internal pipe temperature remains at a low temperature. After obtaining the frequency correction value ΔF2, the second correction frequency F2 of the compressor is calculated, which is the initial frequency F1 when entering the high frequency operation mode. Adding the frequency correction value ΔF2, the compressor runs at the correction frequency F2, and the internal fan speed remains unchanged.

[0080] According to the above embodiments of the present invention, the compressor operating frequency control method of the air conditioner further includes: calculating the cumulative operating time of the compressor in high-frequency operating mode; and controlling the compressor to stop when the cumulative operating time reaches a preset cumulative operating time.

[0081] In this embodiment, the compressor's operating time can be monitored and recorded to ensure that its cumulative operating time in high-frequency operation mode does not exceed a preset cumulative operating time. Once the preset cumulative operating time is reached, the control system will automatically stop the compressor to avoid over-operation leading to equipment damage or energy waste. This helps to extend the compressor's service life, improve the air conditioner's energy efficiency, and reduce maintenance costs.

[0082] like Figure 4 As shown, the cumulative running time of the compressor in high-frequency operation mode is continuously detected and recorded. The relationship between t (i.e., cumulative running time) and the preset value t1 (i.e., preset cumulative running time) is determined. When the cumulative running time in high-frequency operation mode reaches t1, the compressor is controlled to stop and the air conditioner returns to normal cooling mode. At this time, the indoor fan still runs at a low speed.

[0083] The technical solution provided by the above embodiments of the present invention allows for the use of an ultra-low frequency operation mode when the room temperature is close to the set temperature. This increases the temperature of the inner pipe to be close to or above the dew point temperature, and the air conditioner's internal fan slowly dries the condensate on the evaporator surface, reducing condensation. Simultaneously, the low temperature inhibits the volatilization concentration of various pollutants adsorbed on the evaporator, extending the cooling operation time. When the room temperature reaches the set temperature and the compressor is about to stop, the low-frequency operation system has a small circulation flow, and the refrigerant is more concentrated in the outdoor heat exchanger. At this time, the high-frequency operation mode increases the system circulation flow in a short time, allowing more low-temperature refrigerant to enter the indoor side. With minimal impact on room temperature, the inner pipe temperature remains low for a longer period when the compressor stops, and the outer pipe temperature rises faster. The rapid rise in the inner pipe temperature just before the condensate on the evaporator surface dries achieves rapid drying, suppressing the concentration of unpleasant odors and pollutants diffusing into the room, improving user experience and cooling comfort.

[0084] Therefore, the technical solution provided by the above embodiments of the present invention solves the following problems: 1) It solves the problem that the unreasonable frequency control of existing air conditioners causes the indoor evaporator to frequently switch between dry and wet states for a long time before and after the compressor stops; 2) It solves the problem that the existing air conditioner inverter control cannot achieve rapid drying of the evaporator in normal cooling mode. It also has the following beneficial effects: By controlling the compressor to run at low frequency for a long time when the room temperature is close to the set temperature, the temperature of the inner pipe is kept as high as possible or close to the dew point temperature within a certain range, achieving low-temperature pre-drying and reducing condensate volume; then, before the compressor stops, the compressor is controlled to run at high frequency for a short time, increasing the system circulation flow and pressure difference, allowing more low-temperature refrigerant to enter the indoor side, accelerating the temperature rise of the outer pipe and slowing down the temperature rise of the inner pipe, changing the temperature and duration of the constant temperature stage of the inner pipe. As the evaporator condensate gradually decreases and the inner pipe temperature rise gradually accelerates, rapid drying is achieved at the moment the air conditioner stops cooling, meeting the user's cooling needs while accelerating the drying speed of condensate in the normal temperature air stage, improving the air quality of the air conditioner's outlet air, enhancing the user experience, and meeting the needs for health and comfort.

[0085] As described above, in this embodiment of the invention, based on parameters such as the temperature difference between the indoor ambient temperature and the set temperature during cooling, the low-frequency operation frequency of the compressor, and the rate of change of indoor temperature, the compressor is controlled to operate at a long time at low frequency and a short time at high frequency when it stops. This achieves pre-drying of the evaporator under lower internal pipe temperature conditions, and then changes the condensate drying process and accelerates the drying speed, improving indoor air quality. While ensuring the cooling effect, this improves the user experience and meets the needs for health and comfort. It reduces the amount of condensate before the air conditioner compressor stops, and achieves rapid drying of the evaporator after the compressor stops. While ensuring normal cooling comfort, it improves indoor air quality and solves the problem of poor user experience.

[0086] In other words, the technical solution provided by the embodiments of the present invention comprehensively considers multiple factors and achieves low-temperature pre-drying of the evaporator through long-term low-frequency operation, solving the problem of repeated drying and wetting of the evaporator before and after the compressor stops at the temperature point. This allows the evaporator to approach a dry state in advance before the compressor stops, improving air quality after shutdown. By controlling the change process of the inner and outer pipe temperatures through short-term high-frequency operation before the compressor stops, rapid drying is achieved, solving the problem of slow temperature rise of the inner pipe and inability to achieve rapid drying in existing air conditioners after the compressor stops. Under the premise of ensuring room comfort, the evaporator is rapidly dried after the compressor stops.

[0087] It should be noted that, for the sake of simplicity, the foregoing method embodiments are all described as a series of actions. However, those skilled in the art should understand that this application is not limited to the described order of actions, as some steps may be performed in other orders or simultaneously according to this application. Furthermore, those skilled in the art should also understand that the embodiments described in the specification are preferred embodiments, and the actions and modules involved are not necessarily essential to this application.

[0088] Through the above description of the embodiments, those skilled in the art can clearly understand that the methods according to the above embodiments can be implemented by means of software plus necessary general-purpose hardware platforms. Of course, they can also be implemented by hardware, but in many cases the former is a better implementation method. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, can be embodied in the form of a software product. This computer software product is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disk) and includes several instructions to cause a terminal device (which may be a mobile phone, computer, server, or network device, etc.) to execute the methods of the various embodiments of this application.

[0089] According to embodiments of the present invention, a compressor operating frequency control device for an air conditioner for implementing the above-described compressor operating frequency control method for an air conditioner is also provided. Figure 5 This is a schematic diagram of a compressor operating frequency control device for an air conditioner according to an embodiment of the present invention, as shown below. Figure 5 As shown, the device includes: an acquisition module 501, a trigger module 503, a determination module 505, and a control module 507. The compressor operating frequency control device for this air conditioner will be described below.

[0090] The acquisition module 501 is used to acquire the first temperature difference between the indoor ambient temperature of the target room where the air conditioner is located and the set temperature when it is determined that the air conditioner is operating in cooling mode.

[0091] The trigger module 503 is used to trigger the compressor of the air conditioner to operate in an ultra-low frequency operation mode when the first temperature difference is determined to be less than or equal to the first temperature difference threshold, and to continuously acquire the first temperature difference. The ultra-low frequency operation mode is a mode in which the operating frequency of the compressor is lower than the first frequency threshold.

[0092] The determining module 505 is used to determine the operating mode of the compressor based on the relationship between the first temperature difference value and the first temperature difference threshold and the second temperature difference threshold, wherein the first temperature difference threshold is greater than the second temperature difference threshold.

[0093] The control module 507 is used to control the compressor to operate according to the operating mode so that the drying speed of the indoor heat exchanger of the air conditioner reaches the predetermined drying speed.

[0094] It should be noted that the above-mentioned acquisition module 501, trigger module 503, determination module 505 and control module 507 correspond to steps S202 to S208 in the above embodiments. The four modules and the corresponding steps implement the same instances and application scenarios, but are not limited to the content disclosed in the above embodiments.

[0095] As can be seen from the above, in the solution described in the above embodiments of the present invention, firstly, when the acquisition module determines that the air conditioner is operating in cooling mode, it acquires a first temperature difference between the indoor ambient temperature of the target room where the air conditioner is located and the set temperature; then, when the triggering module determines that the first temperature difference is less than or equal to a first temperature difference threshold, it triggers the air conditioner's compressor to operate in an ultra-low frequency operating mode and continuously acquires the first temperature difference, wherein the ultra-low frequency operating mode is a mode in which the compressor's operating frequency is lower than the first frequency threshold; then, the determining module determines the compressor's operating mode based on the magnitude relationship between the first temperature difference and the first temperature difference threshold and the second temperature difference threshold, wherein the first temperature difference threshold is larger than the first temperature difference threshold. At the second temperature difference threshold; finally, the control module can be used to control the compressor to operate according to the operating mode so that the drying speed of the indoor heat exchanger of the air conditioner reaches the predetermined drying speed. This achieves the goal of controlling the compressor to run at low frequency before stopping at the set temperature point to achieve low-temperature pre-drying of the evaporator, and then controlling the compressor to run at high frequency for a short time to increase the high and low pressure difference of the system and the refrigerant circulation flow. This allows more refrigerant to enter the indoor heat exchanger after the compressor stops, suppressing the temperature rise of the inner pipe at the time of shutdown and accelerating the temperature rise of the outer pipe. The pipe temperature rises rapidly when the condensate of the indoor heat exchanger is about to be dried, thereby achieving the technical effect of rapid drying, reducing the concentration of abnormal odors and pollutants diffused into the room, and improving the efficiency and performance of the air conditioner.

[0096] The technical solutions provided by the embodiments of the present invention solve the technical problem in the related art that the frequency conversion control of air conditioners cannot achieve rapid drying of the evaporator in normal cooling mode.

[0097] In one optional embodiment, the triggering module includes: a first acquisition unit, configured to acquire the current operating frequency of the compressor and the outdoor ambient temperature of the target room after determining that the compressor has entered an ultra-low frequency operating mode; a first determination unit, configured to determine a first correction value for the current operating frequency when it is determined that the current operating frequency needs to be corrected based on the relationship between the outdoor ambient temperature and a first outdoor temperature threshold and a second outdoor temperature threshold, wherein the first outdoor temperature threshold is less than the second outdoor temperature threshold; a first correction unit, configured to correct the current operating frequency according to the first correction value to obtain a first corrected frequency; and a second determination unit, configured to determine the operating frequency of the compressor and the indoor fan speed of the air conditioner based on the relationship between the first corrected frequency and a preset frequency.

[0098] In an optional embodiment, the first determining unit includes: a first determining subunit, configured to determine that the current operating frequency needs to be corrected when the outdoor ambient temperature is less than a first outdoor temperature threshold, or when the outdoor ambient temperature is greater than or equal to the first outdoor temperature threshold and less than a second outdoor temperature threshold, wherein the first correction frequency corresponding to the outdoor ambient temperature being less than the first outdoor temperature threshold is greater than the first correction frequency corresponding to the outdoor ambient temperature being greater than or equal to the first outdoor temperature threshold and less than the second outdoor temperature threshold.

[0099] In one optional embodiment, the first correction unit includes: a second determining subunit, configured to determine the frequency difference between the current operating frequency and the first correction value as the first correction frequency.

[0100] In one optional embodiment, the second determining unit includes: a third determining subunit, configured to determine the operating frequency as the preset frequency and reduce the internal fan speed when the first correction frequency is less than the preset frequency; and a fourth determining subunit, configured to determine the operating frequency as the first correction frequency and reduce the internal fan speed when the first correction frequency is greater than or equal to the preset frequency.

[0101] In one optional embodiment, the determining module includes: a third determining unit, configured to determine the operating mode as follows when the first temperature difference is less than a second temperature difference threshold: exiting the ultra-low frequency operating mode and entering a high frequency operating mode, wherein the high frequency operating mode is a mode in which the compressor's operating frequency is higher than the second frequency threshold; a fourth determining unit, configured to determine the operating mode as follows: maintaining the ultra-low frequency operating mode when the first temperature difference is greater than or equal to the second temperature difference threshold and less than the first temperature difference threshold; and a fifth determining unit, configured to determine the operating mode based on the magnitude relationship between a first correction frequency and the frequency threshold when the first temperature difference is greater than or equal to the first temperature difference threshold.

[0102] In an optional embodiment, the fifth determining unit includes: a fifth determining subunit, configured to determine the operating mode as: exiting the ultra-low frequency operating mode when the first correction frequency is greater than the frequency threshold; and a control subunit, configured to control the first correction frequency to increase by a preset frequency at predetermined intervals when the first correction frequency is less than or equal to the frequency threshold, and to cyclically correct the operating frequency of the compressor according to the change of the first temperature difference, so that the indoor ambient temperature is within the preset temperature range.

[0103] In one optional embodiment, the control module includes: a second acquisition unit, configured to acquire a first correction frequency of the compressor and the outdoor ambient temperature of the target room; a sixth determination unit, configured to determine a second correction value of the first correction frequency when it is determined that the first correction frequency needs to be corrected based on the outdoor ambient temperature; a second correction unit, configured to correct the first correction frequency using the second correction value to obtain a second correction frequency; and a first control unit, configured to control the compressor to operate according to the second correction frequency and control the indoor fan speed of the air conditioner to remain constant.

[0104] In one optional embodiment, the compressor operating frequency control device of the air conditioner further includes: a statistics unit for calculating the cumulative operating time of the compressor in high-frequency operating mode; and a second control unit for controlling the compressor to stop when the cumulative operating time reaches a preset cumulative operating time.

[0105] According to another aspect of the present invention, an air conditioner is also provided, which uses the compressor operating frequency control method of any of the above-described air conditioner methods.

[0106] According to another aspect of the present invention, a processor is also provided, the processor being used to run a program, wherein the program executes the compressor operating frequency control method of any one of the above-described methods.

[0107] According to another aspect of the present invention, a computer program product is also provided, including computer instructions, which, when executed by a processor, perform the compressor operating frequency control method of an air conditioner as described above.

[0108] According to another aspect of the present invention, a computer-readable storage medium is also provided, the computer-readable storage medium including a stored program, wherein the program executes the compressor operating frequency control method of any of the above-described methods.

[0109] Optionally, in this embodiment, the computer-readable storage medium may be located in any computer terminal in a group of computer terminals in a computer network, or in any communication device in a group of communication devices.

[0110] Optionally, in this embodiment, the computer-readable storage medium is configured to store program code for performing the following steps: when it is determined that the air conditioner is operating in cooling mode, acquiring a first temperature difference between the indoor ambient temperature of the target room where the air conditioner is located and a set temperature; when it is determined that the first temperature difference is less than or equal to a first temperature difference threshold, triggering the air conditioner's compressor to operate in an ultra-low frequency operating mode and continuously acquiring the first temperature difference, wherein the ultra-low frequency operating mode is a mode in which the compressor's operating frequency is lower than the first frequency threshold; determining the compressor's operating mode according to the magnitude relationship between the first temperature difference and the first temperature difference threshold and the second temperature difference threshold, wherein the first temperature difference threshold is greater than the second temperature difference threshold; controlling the compressor to operate according to the operating mode so that the drying speed of the air conditioner's indoor heat exchanger reaches a predetermined drying speed.

[0111] Optionally, in this embodiment, the computer-readable storage medium is configured to store program code for performing the following steps: after determining that the compressor has entered an ultra-low frequency operating mode, obtaining the current operating frequency of the compressor and the outdoor ambient temperature of the target room; when determining that the current operating frequency needs to be corrected based on the relationship between the outdoor ambient temperature and a first outdoor temperature threshold and a second outdoor temperature threshold, determining a first correction value for the current operating frequency, wherein the first outdoor temperature threshold is less than the second outdoor temperature threshold; correcting the current operating frequency according to the first correction value to obtain a first corrected frequency; determining the operating frequency of the compressor and the indoor fan speed of the air conditioner based on the relationship between the first corrected frequency and a preset frequency.

[0112] Optionally, in this embodiment, the computer-readable storage medium is configured to store program code for performing the following steps: when the outdoor ambient temperature is less than a first outdoor temperature threshold, or when the outdoor ambient temperature is greater than or equal to the first outdoor temperature threshold and less than a second outdoor temperature threshold, determining that the current operating frequency needs to be corrected, wherein the first correction frequency corresponding to the outdoor ambient temperature being less than the first outdoor temperature threshold is greater than the first correction frequency corresponding to the outdoor ambient temperature being greater than or equal to the first outdoor temperature threshold and less than the second outdoor temperature threshold.

[0113] Optionally, in this embodiment, the computer-readable storage medium is configured to store program code for performing the following steps: determining the frequency difference between the current operating frequency and a first correction value as a first correction frequency.

[0114] Optionally, in this embodiment, the computer-readable storage medium is configured to store program code for performing the following steps: when the first correction frequency is less than the preset frequency, determining the operating frequency to the preset frequency and reducing the internal fan speed; when the first correction frequency is greater than or equal to the preset frequency, determining the operating frequency to the first correction frequency and reducing the internal fan speed.

[0115] Optionally, in this embodiment, the computer-readable storage medium is configured to store program code for performing the following steps: when it is determined that the first temperature difference is less than the second temperature difference threshold, the operating mode is determined to be: exiting the ultra-low frequency operating mode and entering the high frequency operating mode, wherein the high frequency operating mode is a mode in which the compressor's operating frequency is higher than the second frequency threshold; when it is determined that the first temperature difference is greater than or equal to the second temperature difference threshold and less than the first temperature difference threshold, the operating mode is determined to be: maintaining the ultra-low frequency operating mode; when it is determined that the first temperature difference is greater than or equal to the first temperature difference threshold, the operating mode is determined according to the magnitude relationship between the first correction frequency and the frequency threshold.

[0116] Optionally, in this embodiment, the computer-readable storage medium is configured to store program code for performing the following steps: when the first correction frequency is greater than a frequency threshold, determining the operating mode as: exiting the ultra-low frequency operating mode; when the first correction frequency is less than or equal to the frequency threshold, controlling the first correction frequency to increase by a preset frequency at predetermined intervals, and cyclically correcting the compressor's operating frequency according to the change in the first temperature difference, so that the indoor ambient temperature is within a preset temperature range.

[0117] Optionally, in this embodiment, the computer-readable storage medium is configured to store program code for performing the following steps: obtaining a first correction frequency of the compressor and the outdoor ambient temperature of the target room; when it is determined that the first correction frequency needs to be corrected based on the outdoor ambient temperature, determining a second correction value for the first correction frequency; correcting the first correction frequency using the second correction value to obtain a second correction frequency; controlling the compressor to operate according to the second correction frequency, and controlling the indoor fan speed of the air conditioner to remain constant.

[0118] Optionally, in this embodiment, the computer-readable storage medium is configured to store program code for performing the following steps: counting the cumulative running time of the compressor in high-frequency operation mode; and controlling the compressor to stop when the cumulative running time reaches a preset cumulative running time.

[0119] The sequence numbers of the above embodiments of the present invention are for descriptive purposes only and do not represent the superiority or inferiority of the embodiments.

[0120] In the above embodiments of the present invention, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions of other embodiments.

[0121] In the several embodiments provided in this application, it should be understood that the disclosed technical content can be implemented in other ways. The device embodiments described above are merely illustrative; for example, the division of units can be a logical functional division, and in actual implementation, there may be other division methods. For instance, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the displayed or discussed mutual coupling, direct coupling, or communication connection may be through some interfaces; the indirect coupling or communication connection between units or modules may be electrical or other forms.

[0122] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0123] Furthermore, the functional units in the various embodiments of the present invention can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The integrated unit can be implemented in hardware or as a software functional unit.

[0124] If the integrated unit is implemented as a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention, in essence, or the part that contributes to the prior art, or all or part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of the present invention. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, read-only memory (ROM), random access memory (RAM), portable hard drives, magnetic disks, or optical disks.

[0125] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A method for controlling the operating frequency of an air conditioner compressor, characterized in that, include: When it is determined that the air conditioner is operating in cooling mode, the first temperature difference between the indoor ambient temperature of the target room where the air conditioner is located and the set temperature is obtained. When the first temperature difference is determined to be less than or equal to the first temperature difference threshold, the compressor of the air conditioner is triggered to operate in an ultra-low frequency operation mode and the first temperature difference is continuously acquired. The ultra-low frequency operation mode is a mode in which the operating frequency of the compressor is lower than the first frequency threshold. The operating mode of the compressor is determined based on the relationship between the first temperature difference value and the first temperature difference threshold and the second temperature difference threshold, wherein the first temperature difference threshold is greater than the second temperature difference threshold. The compressor is controlled to operate according to the operating mode so that the drying speed of the indoor heat exchanger of the air conditioner reaches the predetermined drying speed.

2. The compressor operating frequency control method for an air conditioner according to claim 1, characterized in that, Triggering the compressor of the air conditioner to operate in ultra-low frequency mode includes: After determining that the compressor has entered the ultra-low frequency operation mode, the current operating frequency of the compressor and the outdoor ambient temperature of the target room are obtained. When it is determined that the current operating frequency needs to be corrected based on the relationship between the outdoor ambient temperature and the first outdoor temperature threshold and the second outdoor temperature threshold, a first correction value for the current operating frequency is determined, wherein the first outdoor temperature threshold is less than the second outdoor temperature threshold. The current operating frequency is corrected according to the first correction value to obtain the first corrected frequency; The operating frequency of the compressor and the speed of the indoor fan of the air conditioner are determined based on the relationship between the first correction frequency and the preset frequency.

3. The compressor operating frequency control method for an air conditioner according to claim 2, characterized in that, Based on the relationship between the outdoor ambient temperature and the first and second outdoor temperature thresholds, it is determined whether the current operating frequency needs to be corrected, including: When the outdoor ambient temperature is less than the first outdoor temperature threshold, or when the outdoor ambient temperature is greater than or equal to the first outdoor temperature threshold and less than the second outdoor temperature threshold, it is determined that the current operating frequency needs to be corrected. The first correction frequency corresponding to the outdoor ambient temperature being less than the first outdoor temperature threshold is greater than the first correction frequency corresponding to the outdoor ambient temperature being greater than or equal to the first outdoor temperature threshold and less than the second outdoor temperature threshold.

4. The compressor operating frequency control method for an air conditioner according to claim 2, characterized in that, The current operating frequency is corrected according to the correction value to obtain a first corrected frequency, including: The frequency difference between the current operating frequency and the first correction value is determined as the first correction frequency.

5. The compressor operating frequency control method for an air conditioner according to claim 2, characterized in that, Determining the operating frequency of the compressor and the speed of the indoor fan of the air conditioner based on the relationship between the first corrected frequency and the preset frequency includes: When the first correction frequency is less than the preset frequency, the operating frequency is determined to be the preset frequency and the internal fan speed is reduced; When the first correction frequency is greater than or equal to the preset frequency, the operating frequency is determined to be the first correction frequency and the internal fan speed is reduced.

6. The compressor operating frequency control method for an air conditioner according to claim 2, characterized in that, The operating mode of the compressor is determined based on the relationship between the first temperature difference value and the first temperature difference threshold and the second temperature difference threshold, including: When it is determined that the first temperature difference is less than the second temperature difference threshold, the operating mode is determined to be: exiting the ultra-low frequency operating mode and entering the high frequency operating mode, wherein the high frequency operating mode is the mode in which the operating frequency of the compressor is higher than the second frequency threshold; When it is determined that the first temperature difference is greater than or equal to the second temperature difference threshold and less than the first temperature difference threshold, the operating mode is determined to be: maintaining the ultra-low frequency operating mode; When it is determined that the first temperature difference is greater than or equal to the first temperature difference threshold, the operating mode is determined according to the relationship between the first correction frequency and the frequency threshold.

7. The compressor operating frequency control method for an air conditioner according to claim 6, characterized in that, When it is determined that the first temperature difference is greater than or equal to the first temperature difference threshold, the operating mode is determined based on the relationship between the first correction frequency and the frequency threshold, including: When the first correction frequency is greater than the frequency threshold, the operating mode is determined to be: exit the ultra-low frequency operating mode; When the first correction frequency is less than or equal to the frequency threshold, the first correction frequency is controlled to increase by a preset frequency every predetermined period, and the operating frequency of the compressor is cyclically corrected according to the change of the first temperature difference, so that the indoor ambient temperature is within the preset temperature range.

8. The compressor operating frequency control method for an air conditioner according to claim 6 or 7, characterized in that, When the operating mode is the high-frequency operating mode, controlling the compressor to operate according to the operating mode includes: The first correction frequency of the compressor and the outdoor ambient temperature of the target room are obtained; When it is determined that the first correction frequency needs to be corrected based on the outdoor ambient temperature, a second correction value for the first correction frequency is determined. The first correction frequency is corrected using the second correction value to obtain the second correction frequency; The compressor is controlled to operate at the second correction frequency, and the speed of the indoor fan of the air conditioner is controlled to remain constant.

9. The compressor operating frequency control method for an air conditioner according to claim 8, characterized in that, Also includes: The cumulative operating time of the compressor in the high-frequency operating mode is calculated. When the cumulative running time reaches the preset cumulative running time, the compressor is controlled to stop.

10. A compressor operating frequency control device for an air conditioner, characterized in that, include: The acquisition module is used to acquire a first temperature difference between the indoor ambient temperature of the target room where the air conditioner is located and the set temperature when it is determined that the air conditioner is operating in cooling mode. The triggering module is used to trigger the compressor of the air conditioner to operate in an ultra-low frequency operation mode when it is determined that the first temperature difference is less than or equal to the first temperature difference threshold, and to continuously acquire the first temperature difference, wherein the ultra-low frequency operation mode is a mode in which the operating frequency of the compressor is lower than the first frequency threshold. The determining module is used to determine the operating mode of the compressor based on the relationship between the first temperature difference value and the first temperature difference threshold and the second temperature difference threshold, wherein the first temperature difference threshold is greater than the second temperature difference threshold. The control module is used to control the compressor to operate according to the operating mode so that the drying speed of the indoor heat exchanger of the air conditioner reaches the predetermined drying speed.

11. An air conditioner, characterized in that, The air conditioner uses the compressor operating frequency control method of any one of claims 1 to 9.

12. A computer-readable storage medium, characterized in that, The computer-readable storage medium includes a stored program, wherein the program executes the compressor operating frequency control method for an air conditioner according to any one of claims 1 to 9.

13. A processor, characterized in that, The processor is used to run a program, wherein the program executes the compressor operating frequency control method of the air conditioner according to any one of claims 1 to 9.

14. A computer program product comprising computer instructions, characterized in that, When the computer instructions are executed by the processor, the compressor operating frequency control method of the air conditioner according to any one of claims 1 to 9 is performed.

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