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

Abstract

The application provides a kind of air conditioner control method, device, storage medium and air conditioner, the method comprises: after the air conditioner starts second time according to the set maximum frequency under current operating mode operation, when detecting that indoor environment temperature reaches the set temperature under current operating mode, the air conditioner is according to the low frequency operating frequency preset under current operating mode operation, obtain the current temperature variation rate of the air conditioner;Determine whether the current temperature variation rate of the air conditioner obtained is greater than the preset temperature variation rate under the current operating mode of the air conditioner;If it is determined that the current temperature variation rate of the air conditioner is greater than the preset temperature variation rate under the current operating mode, then the set maximum frequency under the current operating mode of the air conditioner is reduced by a preset frequency value.The scheme provided by the application can make the air conditioner can adapt to room size to correct the upper limit frequency to the optimal state matching the size of use space.

Description

Technical Field

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

[0002] Currently, most air conditioner users choose air conditioners based on the recommended room size range. However, in actual use, the room size may be too large or too small compared to the standard design of the air conditioner. This can lead to the air conditioner's cooling capacity being unsuitable for the room. When the room is small, the compressor runs at its maximum frequency every time the air conditioner starts up or switches from low to high frequency control, keeping the overall power consumption at maximum and increasing electricity consumption accordingly. When the room is particularly small, frequent shutdowns or room temperatures far below the set temperature may occur. Summary of the Invention

[0003] The main objective of this invention is to overcome the deficiencies of the aforementioned related technologies and provide an air conditioning control method, device, storage medium, and air conditioner to solve the problem of power waste caused by the air conditioner operating at maximum frequency to reach the set temperature point every time the air conditioner needs to be frequency-increased for temperature change when the selected air conditioner is too large for the room.

[0004] This invention provides a method for controlling an air conditioner, comprising: after the air conditioner is started and operates for the second time at a set maximum frequency in the current operating mode, when the indoor ambient temperature is detected to reach the set temperature in the current operating mode, the air conditioner operates at a preset low frequency in the current operating mode, and the method acquires the current temperature change rate of the air conditioner; determines whether the acquired current temperature change rate of the air conditioner is greater than the preset temperature change rate in the current operating mode; if it is determined that the current temperature change rate of the air conditioner is greater than the preset temperature change rate in the current operating mode, then the set maximum frequency in the current operating mode of the air conditioner is reduced by a preset frequency value; wherein, after the air conditioner is started, when the absolute value of the temperature difference between the indoor ambient temperature and the set temperature in the current operating mode is detected to be greater than the preset temperature value, the air conditioner operates at the set maximum frequency in the current operating mode, and when the indoor ambient temperature is detected to reach the set temperature in the current operating mode, the air conditioner operates at a preset low frequency in the current operating mode.

[0005] Optionally, when the indoor ambient temperature is detected to have reached the set temperature in the current operating mode, and the air conditioner operates at a preset low-frequency operating frequency in the current operating mode, the current temperature change rate of the air conditioner is obtained, including: obtaining the current indoor ambient temperature before the air conditioner starts operating at a preset maximum frequency in the current operating mode before the indoor ambient temperature is detected to have reached the set temperature in the current operating mode; obtaining the operating time from the start of the air conditioner operating at a preset maximum frequency in the current operating mode until the indoor ambient temperature is detected to have reached the set temperature in the current operating mode before the indoor ambient temperature is detected to have reached the set temperature in the current operating mode, the operating time being called the high-frequency operating time; and determining the current temperature change rate of the air conditioner based on the ratio of the difference between the current indoor ambient temperature and the set temperature in the current operating mode to the high-frequency operating time, or the ratio of the difference between the set temperature in the current operating mode and the current indoor ambient temperature to the high-frequency operating time.

[0006] Optionally, it further includes: determining whether the current operating mode of the air conditioner is a cooling mode or a heating mode; if the current operating mode of the air conditioner is determined to be a cooling mode or a heating mode, after the air conditioner is started and runs for the second time at the maximum frequency set in the current operating mode, when the indoor ambient temperature is detected to reach the set temperature, the air conditioner runs at the preset low frequency in the current operating mode, and the current temperature change rate of the air conditioner is obtained.

[0007] Optionally, it further includes: if it is determined that the current temperature change rate of the air conditioner is less than or equal to the preset temperature change rate in the current operating mode, then the set maximum frequency in the current operating mode of the air conditioner remains unchanged; when the air conditioner is turned off or the power is cut off, the set maximum frequency in the current operating mode of the air conditioner is restored to the initially set set maximum frequency.

[0008] Another aspect of the present invention provides a control device for an air conditioner, comprising: an acquisition unit, configured to acquire the current temperature change rate of the air conditioner when, after the air conditioner has been started and is running for the second time at a set maximum frequency in the current operating mode, the air conditioner is running at a preset low frequency in the current operating mode when the indoor ambient temperature is detected to reach the set temperature in the current operating mode; a first judgment unit, configured to judge whether the current temperature change rate of the air conditioner acquired by the acquisition unit is greater than the preset temperature change rate in the current operating mode; and an adjustment unit, configured to reduce the set maximum frequency in the current operating mode of the air conditioner by a preset frequency value if the first judgment unit judges that the current temperature change rate of the air conditioner is greater than the preset temperature change rate in the current operating mode; wherein, after the air conditioner is started, when the absolute value of the temperature difference between the indoor ambient temperature and the set temperature in the current operating mode is detected to be greater than the preset temperature difference value, the air conditioner runs at the set maximum frequency in the current operating mode; and when the indoor ambient temperature is detected to reach the set temperature in the current operating mode, the air conditioner runs at a preset low frequency in the current operating mode.

[0009] Optionally, the acquisition unit, when detecting that the indoor ambient temperature has reached the set temperature in the current operating mode, and the air conditioner is running at a preset low-frequency operating frequency in the current operating mode, acquires the current temperature change rate of the air conditioner, including: acquiring the current indoor ambient temperature before the air conditioner starts running at a preset maximum frequency in the current operating mode before detecting that the indoor ambient temperature has reached the set temperature in the current operating mode; acquiring the operating time from the start of the air conditioner running at a preset maximum frequency in the current operating mode until the detection that the indoor ambient temperature has reached the set temperature in the current operating mode, the operating time being called the high-frequency operating time; and determining the current temperature change rate of the air conditioner based on the ratio of the difference between the current indoor ambient temperature and the set temperature in the current operating mode to the high-frequency operating time, or the ratio of the difference between the set temperature in the current operating mode and the current indoor ambient temperature to the high-frequency operating time.

[0010] Optionally, it further includes: a second judgment unit, used to determine whether the current operating mode of the air conditioner is a cooling mode or a heating mode; the acquisition unit, when the second judgment unit determines that the current operating mode of the air conditioner is a cooling mode or a heating mode, after the air conditioner runs for the second time at the set maximum frequency in the current operating mode after starting, when the indoor ambient temperature is detected to reach the set temperature, and the air conditioner runs at the preset low frequency in the current operating mode, acquires the current temperature change rate of the air conditioner.

[0011] Optionally, the adjustment unit is further configured to: if the first judgment unit determines that the current temperature change rate of the air conditioner is less than or equal to the preset temperature change rate in the current operating mode, then the set maximum frequency in the current operating mode of the air conditioner remains unchanged; and / or, the adjustment unit is further configured to: when the air conditioner is turned off or the power is cut off, restore the set maximum frequency in the current operating mode of the air conditioner to the initially set set maximum frequency.

[0012] In another aspect, the present invention provides a storage medium having a computer program stored thereon, which, when executed by a processor, implements the steps of any of the methods described above.

[0013] In another aspect, the present invention provides an air conditioner, including a processor, a memory, and a computer program stored in the memory that can run on the processor, wherein the processor executes the program to implement the steps of any of the methods described above.

[0014] In another aspect, the present invention provides an air conditioner including any of the control devices described above.

[0015] According to the technical solution of the present invention, when the room area is small, the air conditioner can adapt to the room size and adjust the upper limit frequency to the optimal state that matches the size of the space. The power of the whole unit is reduced while the noise is also improved, which saves electricity and ensures comfort. At the same time, the service life of the air conditioner can also be extended.

[0016] The maximum operating frequency limit is adjusted based on the rate of temperature drop in the room under cooling conditions and the rate of temperature rise in the room under heating conditions. If the rate of temperature drop in the room under cooling conditions or the rate of temperature rise in the room under heating conditions is slow, the maximum operating frequency limit adjustment is terminated.

[0017] By detecting the rate of temperature change in the room where the air conditioner is used, the upper limit frequency of the air conditioner (i.e., the maximum set frequency) is gradually reduced until it adapts to the optimal state for the size of the room, thereby improving user comfort. Attached Figure Description

[0018] The accompanying drawings, which are included to provide a further understanding of the invention and form part of this invention, illustrate exemplary embodiments of the invention and are used to explain the invention, but do not constitute an undue limitation of the invention. In the drawings:

[0019] Figure 1 This is a schematic diagram of an embodiment of the air conditioner control method provided by the present invention;

[0020] Figure 2A flowchart illustrating a specific embodiment of the steps for obtaining the current rate of temperature change of the air conditioner is shown;

[0021] Figure 3 This is a schematic diagram of a specific embodiment of the air conditioner control method provided by the present invention;

[0022] Figure 4 A detailed control logic operation reference example of the air conditioner control method provided by the present invention is shown;

[0023] Figure 5 This is a structural block diagram of an embodiment of the air conditioner control device provided by the present invention. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be clearly and completely described below in conjunction with specific embodiments and corresponding drawings. Obviously, the described embodiments are only a part of the embodiments of this invention, and not all of them. Based on the embodiments of this invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this invention.

[0025] 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.

[0026] Figure 1 This is a schematic diagram of an embodiment of the air conditioner control method provided by the present invention.

[0027] like Figure 1 As shown, according to an embodiment of the present invention, the control method includes at least steps S110, S120 and S130.

[0028] Step S110: After the air conditioner starts and runs for the second time at the maximum frequency set in the current operating mode, when the indoor ambient temperature is detected to reach the set temperature in the current operating mode, the air conditioner runs at the preset low frequency in the current operating mode, and the current temperature change rate of the air conditioner is obtained.

[0029] Preferably, before executing step S110, it is first determined whether the current operating mode of the air conditioner is cooling mode or heating mode; if it is determined that the current operating mode of the air conditioner is cooling mode or heating mode, then step S110 is executed. Specifically, cooling mode and heating mode are performance operating modes, that is, the method of the present invention is only executed when the air conditioner is operating in performance mode. Non-performance operating modes, such as fan mode and dehumidification mode, do not involve changes in compressor frequency, so when the current operating mode of the air conditioner is a non-performance operating mode, the method of the present invention is not executed.

[0030] After the air conditioner is started, when the absolute value of the temperature difference between the indoor ambient temperature and the set temperature in the current operating mode is detected to be greater than the preset temperature difference value, the air conditioner operates at the maximum frequency set in the current operating mode. When the indoor ambient temperature is detected to reach the set temperature in the current operating mode, the air conditioner operates at the low frequency preset in the current operating mode.

[0031] Specifically, after the air conditioner is turned on, the compressor initially operates at the maximum frequency set in the current operating mode, i.e., high-frequency operation. Once the indoor ambient temperature reaches the set temperature (which can be set via the air conditioner's remote control), the compressor operates at a preset low-frequency frequency. When the indoor ambient temperature rises (in cooling mode) or falls (in heating mode), and the absolute value of the temperature difference between the indoor ambient temperature and the set temperature in the current operating mode is detected to be greater than a preset temperature difference value, the air conditioner resumes operation at the maximum frequency set in the current operating mode, and so on. For example, when the absolute value of the temperature difference between the indoor ambient temperature and the set temperature in the current operating mode is greater than 2°C, the air conditioner starts operating at high frequency; otherwise, it maintains low-frequency operation.

[0032] After the air conditioner starts and operates at the maximum frequency set in the current operating mode for the second time, whenever the indoor ambient temperature is detected to reach the set temperature in the current operating mode, and the air conditioner operates at a preset low-frequency operating frequency in the current operating mode (i.e., the compressor frequency of the air conditioner is reduced to the preset low-frequency operating frequency in the current operating mode), the method of the present invention is executed. That is, after the air conditioner is turned on and the indoor ambient temperature reaches the set temperature in the current operating mode, the air conditioner operates at a low frequency. When the indoor ambient temperature rises (in cooling mode) or falls (in heating mode), the air conditioner operates at a high frequency for the second time (i.e., at the maximum frequency set in the current operating mode) until the indoor ambient temperature reaches the set temperature in the current operating mode, and then operates at a low frequency (i.e., at the preset low-frequency operating frequency in the current operating mode), the control method of the present invention is executed. When the indoor ambient temperature is detected to reach the set temperature in the current operating mode again, and the air conditioner operates at the preset low-frequency operating frequency in the current operating mode, the method of the present invention is executed again.

[0033] The current operating mode includes either cooling mode or heating mode. In cooling mode and heating mode, different set temperatures, set maximum frequencies, and / or preset low-frequency operating frequencies can be used.

[0034] The current temperature change rate S of the air conditioner can be specifically defined as the temperature change rate S of the air conditioner when it operates at the maximum frequency set in the current operating mode until the indoor ambient temperature is detected to reach the set temperature in the current operating mode.

[0035] Figure 2 A flowchart illustrating one specific embodiment of the steps for obtaining the current rate of temperature change of the air conditioner is shown. Figure 2 As shown, in one specific embodiment, step S110 includes steps S111 to S113.

[0036] Step S111: Obtain the current indoor ambient temperature before the air conditioner starts running at the set maximum frequency in the current operating mode, before detecting that the indoor ambient temperature has reached the set temperature in the current operating mode.

[0037] Step S112: Obtain the running time from when the air conditioner starts running at the maximum frequency set in the current operating mode until the indoor ambient temperature is detected to reach the set temperature in the current operating mode before the indoor ambient temperature is detected to reach the set temperature in the current operating mode.

[0038] Specifically, the system acquires the current indoor ambient temperature before the air conditioner starts operating at the maximum frequency set in the current operating mode, and the operating time from the start of the air conditioner operating at the maximum frequency to the detection of the indoor ambient temperature reaching the set temperature in the current operating mode. This time is called the high-frequency operating time. That is, after the indoor ambient temperature reached the set temperature in the current operating mode, the air conditioner operates at a preset low-frequency operating frequency (i.e., low-frequency operation) in the current operating mode. When the indoor ambient temperature rises (cooling mode) or falls (heating mode) and does not reach the set temperature, the air conditioner operates at the maximum frequency set in the current operating mode. The system acquires the indoor ambient temperature when the air conditioner starts operating at the maximum frequency set in the current operating mode, and the operating time (T0-T1) between the start time T1 (referred to as the high-frequency start time T1) and the time T0 (referred to as the low-frequency start time T0) when the indoor ambient temperature reaches the set temperature in the current operating mode. This time is called the high-frequency operating time.

[0039] Step S113: Determine the current temperature change rate of the air conditioner based on the ratio of the difference between the current indoor ambient temperature and the set temperature in the current operating mode to the high-frequency operating time, or the ratio of the difference between the set temperature in the current operating mode and the current indoor ambient temperature to the high-frequency operating time.

[0040] Specifically, in cooling mode, the temperature change rate, or temperature drop rate, of the air conditioner is determined based on the ratio of the difference between the current indoor ambient temperature and the set temperature in the current operating mode to the high-frequency operating time. This rate is equal to the ratio of the temperature difference between the current indoor ambient temperature t0 and the set temperature t1 in cooling mode to the time difference between reaching the low-frequency setting time T0 and the high-frequency start-up time T1. That is, the temperature change rate S = (t0 - t1) / (T0 - T1).

[0041] In heating mode, the temperature change rate, or temperature rise rate, of the air conditioner is determined by the ratio of the difference between the set temperature in the current operating mode and the current indoor ambient temperature to the high-frequency operating time. This rate is equal to the ratio of the temperature difference between the set temperature t2 in heating mode and the current indoor ambient temperature t0 to the time difference between reaching the low-frequency setting time T0 and the high-frequency start-up time T1. That is, the temperature change rate S = (t2 - t0) / (T0 - T1).

[0042] Step S120: Determine whether the current temperature change rate of the air conditioner is greater than the preset temperature change rate in the current operating mode of the air conditioner.

[0043] If it is determined that the current temperature change rate of the air conditioner is less than or equal to the preset temperature change rate in the current operating mode, then the set maximum frequency in the current operating mode of the air conditioner remains unchanged.

[0044] Step S130: If it is determined that the current temperature change rate of the air conditioner is greater than the preset temperature change rate in the current operating mode, then the set maximum frequency in the current operating mode of the air conditioner is reduced by a preset frequency value.

[0045] Different operating modes correspond to different preset temperature change rates. For example, the preset temperature change rate in cooling mode is the preset cooling temperature drop rate S. 冷 The preset temperature change rate corresponding to the heating mode is the preset heating temperature rise rate S. 热 It determines whether the current temperature change rate S of the air conditioner is greater than the preset temperature change rate in the current operating mode. For example, in cooling mode, it determines whether S > S 冷 In heating mode, determine whether S > S 热 If the condition is met under cooling mode, then S > S 冷 In cooling mode, the maximum frequency setting is reduced by the preset frequency value; or, in heating mode, if the condition is satisfied that S > S 热 If the maximum frequency in the air conditioner's heating mode is reduced by a preset frequency value, the preset frequency value can be, for example, 2Hz.

[0046] Optionally, when the air conditioner is turned off or the power is cut off, the set maximum frequency of the air conditioner in its current operating mode is restored to the initially set maximum frequency. Specifically, this is done each time S > S 冷 Or S > S 热 At that time, the maximum frequency is set to decrease by the preset frequency value until S is detected to be less than the preset value, i.e., S ≤ S. 冷 or S≤S 热 When the air conditioner is turned off or the power is cut off, the maximum frequency setting will not decrease. When the air conditioner is turned off or the power is cut off, the previous maximum frequency setting will be restored, that is, it will be restored to the initial maximum frequency setting.

[0047] The purpose of restoring the initial maximum frequency setting here includes: First, because the actual starting temperature of the room varies each time the air conditioner is used, a higher frequency allows the room to reach the set temperature more quickly, improving user comfort. Second, if the reduced high frequency cannot meet the user experience, it cannot be restored to the initial high frequency (maximum frequency setting). Third, if the user's air conditioner needs to be used in a different space, it needs to readjust to the new environment.

[0048] In inverter air conditioners, after being remotely started, the unit operates at its maximum frequency until the set temperature is reached, then stops. When the indoor temperature rises, the air conditioner again operates at its maximum frequency until the set temperature is reached, then operates at a lower frequency. This system operates at maximum frequency every time it starts, which is suitable for larger rooms where the ambient temperature differs significantly from the set temperature, allowing the room temperature to reach the set temperature quickly. However, when the room is relatively small (i.e., the air conditioner is larger than the installation space), if it always operates at the highest frequency, the compressor remains in a high-power state, resulting in relatively high power consumption and louder compressor noise, which is detrimental to the user experience. When the selected air conditioner is larger than the room size, it operates at its maximum frequency every time the temperature needs to be adjusted, resulting in wasted power due to full-load operation. The high-frequency compressor noise is also relatively loud, transmitting a louder sound to the user through the indoor unit. Maintaining high-frequency operation also increases compressor wear and reduces the air conditioner's lifespan.

[0049] According to the technical solution of this invention, after the air conditioner is turned on, the compressor first runs at a low frequency according to the preset maximum frequency of the whole machine until it reaches the set temperature point. On the one hand, this can quickly cool the room and ensure comfort; on the other hand, because the initial temperature of the room when the air conditioner is turned on may not be the same each time, and the height of the air conditioner installation may also affect the accuracy of the air conditioner's temperature change rate, it is impossible to determine whether the air conditioner's temperature change rate is normal. When the ambient temperature rises, the air conditioner runs at a high frequency for the second time until it reaches the set temperature point, and then runs at a low frequency. At this time, the difference Δt between the ambient temperature t0 at the start of high-frequency operation and the set temperature t1 (or the difference Δt between the set temperature t1 and the ambient temperature t0 at the start of high-frequency operation), and the difference ΔT between the compressor's low-frequency operation start time T0 and the high-frequency start time T1 are detected. The temperature change rate is calculated in relation to the preset cooling temperature drop rate S. 冷 Or preset the heating temperature rise rate S 热 The upper limit frequency of the air conditioner is adjusted by adjusting the value of the preset frequency (e.g., 2Hz) until the optimal frequency point is reached, i.e., S≤S 冷 or S≤S 热 The maximum frequency can be set at any time to improve user comfort.

[0050] To clearly illustrate the technical solution of the present invention, the execution flow of the air conditioner control method provided by the present invention will be described below with reference to several specific embodiments.

[0051] Figure 3 This is a schematic diagram of a specific embodiment of the air conditioner control method provided by the present invention. Figure 3 As shown,

[0052] Step S11: Determine whether the air conditioner is in cooling or heating mode. Non-performance operation modes do not involve changes in compressor frequency, such as air supply mode and dehumidification mode.

[0053] Step S12: The air conditioner operates stably at the set maximum frequency. When the set temperature point is reached twice and the frequency is reduced to a low frequency, step S13 is executed.

[0054] Step S13: Determine whether the air conditioner is in cooling mode or heating mode, so as to determine the set temperature and preset temperature change rate in the current operating mode.

[0055] Step S14: Obtain the indoor ambient temperature, set temperature, and high-frequency operating time, and calculate the temperature change rate S according to the air conditioner's operating mode. In cooling mode, the temperature change rate (i.e., temperature drop rate) S = (ambient temperature t0 - cooling set temperature t1) / high-frequency operating time, where high-frequency operating time = time to reach low frequency T0 - high-frequency start-up time T1; in heating mode, the temperature change rate (i.e., temperature rise rate) S = (heating set temperature t2 - ambient temperature t0) / high-frequency operating time, where high-frequency operating time = time to reach low frequency T0 - high-frequency start-up time T1.

[0056] Step S15: Determine whether the measured temperature change rate S matches the preset temperature change rate S. 冷 or S 热 Size.

[0057] Step S16: Control the maximum frequency of the air conditioner. If the measured temperature change rate S is greater than the preset temperature change rate, the maximum frequency of the whole unit is reduced by 2 Hz from the preset frequency value; otherwise, the set frequency remains unchanged.

[0058] Step S17: Check if the air conditioner is turned off or powered off. If not, return to S3 to continue the frequency reduction action.

[0059] Figure 4 A detailed control logic operation reference example of the air conditioner control method provided by the present invention is shown, such as... Figure 4 As shown:

[0060] Step S21: The inverter air conditioner switches from the off state to the on state;

[0061] Step S22: Determine whether the air conditioner is in performance operation mode;

[0062] Step S23: If the air conditioner is detected to be in non-performance test mode, the unit will operate normally without the need for subsequent frequency reduction operation; if the air conditioner is detected to be in cooling or heating mode, the air conditioner will operate at low frequency after reaching the set temperature for the first time.

[0063] Step S24: As the indoor ambient temperature gradually rises (air conditioner turns on cooling mode) or falls (air conditioner turns on heating mode), the air conditioner will run at high frequency for the second time and then run at low frequency after reaching the set temperature.

[0064] Step S25: At this time, check whether the air conditioner is in cooling mode or heating mode;

[0065] When the air conditioner is in cooling mode: monitor the initial ambient temperature t0, the air conditioner set temperature t1, the high-frequency start time T1, and the low-frequency start time T0, and calculate the temperature drop rate S = (t0 - t1) / (T0 - T1). If S > preset cooling temperature drop rate S 冷 If the maximum frequency setting is 2Hz in cooling mode, the air conditioner will not reduce the frequency. Conversely, if the maximum frequency setting is 2Hz, the air conditioner will not reduce the frequency.

[0066] When the air conditioner is in heating mode: monitor the set air conditioner temperature t2, initial ambient temperature t0, high-frequency start time T1, and low-frequency start time T0, and calculate the temperature rise rate S = (t2 - t0) / (T0 - T1). If S > preset heating temperature rise rate S 热 If the maximum frequency is set in heating mode, it will be reduced by 2Hz. Otherwise, the air conditioner will not reduce the frequency.

[0067] Step S26: Determine whether to shut down or disconnect the power. If the unit needs to continue running, the system repeats step S24 until it detects that S > preset temperature change rate, and the set maximum frequency no longer decreases. When the air conditioner is shut down or disconnected from the power, it returns to the maximum frequency state before the frequency reduction until the next time it is turned on.

[0068] The present invention also provides a control device for an air conditioner.

[0069] Figure 5 This is a structural block diagram of an embodiment of the air conditioner control device provided by the present invention. Figure 5 As shown, the control device 100 includes: an acquisition unit 110, a first judgment unit 120, and an adjustment unit 130.

[0070] The acquisition unit 110 is used to acquire the current temperature change rate of the air conditioner after the air conditioner has been started and has been running for the second time at the maximum frequency set in the current operating mode, when the indoor ambient temperature is detected to have reached the set temperature in the current operating mode and the air conditioner is running at the low frequency preset in the current operating mode.

[0071] Preferably, the device 100 further includes a second judgment unit (not shown) for judging whether the current operating mode of the air conditioner is a cooling mode or a heating mode; the acquisition unit 110, when the second judgment unit judges that the current operating mode of the air conditioner is a cooling mode or a heating mode, after the air conditioner runs for the second time at the set maximum frequency in the current operating mode after starting, when the indoor ambient temperature is detected to reach the set temperature, and the air conditioner runs at the preset low frequency in the current operating mode, acquires the current temperature change rate of the air conditioner.

[0072] That is, the second determination unit first determines whether the current operating mode of the air conditioner is cooling mode or heating mode; if the second determination unit determines that the current operating mode of the air conditioner is cooling mode or heating mode, after the air conditioner starts and runs for the second time at the set maximum frequency in the current operating mode, when the indoor ambient temperature is detected to have reached the set temperature, the air conditioner runs at the preset low frequency in the current operating mode, and the acquisition unit then acquires the current temperature change rate of the air conditioner. Specifically, cooling mode and heating mode are performance operating modes, that is, the functions of the device of the present invention are only executed when the air conditioner is operating in performance mode. Non-performance operating modes, such as air supply mode and dehumidification mode, do not involve compressor frequency changes, so when the current operating mode of the air conditioner is a non-performance operating mode, the functions of the device of the present invention are not executed.

[0073] After the air conditioner is started, when the absolute value of the temperature difference between the indoor ambient temperature and the set temperature in the current operating mode is detected to be greater than the preset temperature difference value, the air conditioner operates at the maximum frequency set in the current operating mode. When the indoor ambient temperature is detected to reach the set temperature in the current operating mode, the air conditioner operates at the low frequency preset in the current operating mode.

[0074] Specifically, after the air conditioner is turned on, the compressor initially operates at the maximum frequency set in the current operating mode, i.e., high-frequency operation. Once the indoor ambient temperature reaches the set temperature (which can be set via the air conditioner's remote control), the compressor operates at a preset low-frequency frequency. When the indoor ambient temperature rises (in cooling mode) or falls (in heating mode), and the absolute value of the temperature difference between the indoor ambient temperature and the set temperature in the current operating mode is detected to be greater than a preset temperature difference value, the air conditioner resumes operation at the maximum frequency set in the current operating mode, and so on. For example, when the absolute value of the temperature difference between the indoor ambient temperature and the set temperature in the current operating mode is greater than 2°C, the air conditioner starts operating at high frequency; otherwise, it maintains low-frequency operation.

[0075] After the air conditioner starts and operates at the maximum frequency set in the current operating mode for the second time, whenever the indoor ambient temperature is detected to reach the set temperature in the current operating mode, and the air conditioner operates at a preset low-frequency operating frequency in the current operating mode (i.e., the compressor frequency of the air conditioner is reduced to the preset low-frequency operating frequency in the current operating mode), the method of the present invention is executed. That is, after the air conditioner is turned on and the indoor ambient temperature reaches the set temperature in the current operating mode, the air conditioner operates at a low frequency. When the indoor ambient temperature rises (in cooling mode) or falls (in heating mode), the air conditioner operates at a high frequency for the second time (i.e., at the maximum frequency set in the current operating mode) until the indoor ambient temperature reaches the set temperature in the current operating mode, and then operates at a low frequency (i.e., at the preset low-frequency operating frequency in the current operating mode), the control device of the present invention executes the corresponding function. When the indoor ambient temperature is detected to reach the set temperature in the current operating mode again, and the air conditioner operates at the preset low-frequency operating frequency in the current operating mode, the control device of the present invention executes the corresponding function again.

[0076] The current operating mode includes either cooling mode or heating mode. In cooling mode and heating mode, different set temperatures, set maximum frequencies, and / or preset low-frequency operating frequencies can be used.

[0077] The current temperature change rate S of the air conditioner can be specifically defined as the temperature change rate S of the air conditioner when it operates at the maximum frequency set in the current operating mode until the indoor ambient temperature is detected to reach the set temperature in the current operating mode.

[0078] In one specific embodiment, the acquisition unit 110, when detecting that the indoor ambient temperature has reached the set temperature in the current operating mode, and the air conditioner is running at a preset low-frequency operating frequency in the current operating mode, acquires the current temperature change rate of the air conditioner by: acquiring the current indoor ambient temperature before the air conditioner starts running at a preset maximum frequency in the current operating mode, prior to detecting that the indoor ambient temperature has reached the set temperature; acquiring the operating time from the start of the air conditioner running at a preset maximum frequency in the current operating mode until the detection that the indoor ambient temperature has reached the set temperature in the current operating mode, the operating time being referred to as the high-frequency operating time; and determining the current temperature change rate of the air conditioner based on the ratio of the difference between the current indoor ambient temperature and the set temperature in the current operating mode to the high-frequency operating time, or the ratio of the difference between the set temperature in the current operating mode and the current indoor ambient temperature to the high-frequency operating time.

[0079] Specifically, the system acquires the current indoor ambient temperature before the air conditioner starts operating at the maximum frequency set in the current operating mode, and the operating time from the start of the air conditioner operating at the maximum frequency to the detection of the indoor ambient temperature reaching the set temperature in the current operating mode. This time is called the high-frequency operating time. That is, after the indoor ambient temperature reached the set temperature in the current operating mode, the air conditioner operates at a preset low-frequency operating frequency (i.e., low-frequency operation) in the current operating mode. When the indoor ambient temperature rises (cooling mode) or falls (heating mode) and does not reach the set temperature, the air conditioner operates at the maximum frequency set in the current operating mode. The system acquires the indoor ambient temperature when the air conditioner starts operating at the maximum frequency set in the current operating mode, and the operating time (T0-T1) between the start time T1 (referred to as the high-frequency start time T1) and the time T0 (referred to as the low-frequency start time T0) when the indoor ambient temperature reaches the set temperature in the current operating mode. This time is called the high-frequency operating time.

[0080] In cooling mode, the temperature change rate, or temperature drop rate, of the air conditioner is determined based on the ratio of the difference between the current indoor ambient temperature and the set temperature in the current operating mode to the high-frequency operating time. This rate is equal to the ratio of the temperature difference between the current indoor ambient temperature t0 and the set temperature t1 in cooling mode to the time difference between the time to reach the low-frequency setting T0 and the high-frequency start-up time T1. That is, the temperature change rate S = (t0 - t1) / (T0 - T1).

[0081] In heating mode, the temperature change rate, or temperature rise rate, of the air conditioner is determined by the ratio of the difference between the set temperature in the current operating mode and the current indoor ambient temperature to the high-frequency operating time. This rate is equal to the ratio of the temperature difference between the set temperature t2 in heating mode and the current indoor ambient temperature t0 to the time difference between reaching the low-frequency setting time T0 and the high-frequency start-up time T1. That is, the temperature change rate S = (t2 - t0) / (T0 - T1).

[0082] The first judgment unit 120 is used to determine whether the current temperature change rate of the air conditioner obtained by the acquisition unit is greater than the preset temperature change rate in the current operating mode of the air conditioner.

[0083] The adjustment unit 130 is configured to, if the first determination unit determines that the current temperature change rate of the air conditioner is greater than the preset temperature change rate in the current operating mode, reduce the set maximum frequency in the current operating mode of the air conditioner by a preset frequency value; if the first determination unit determines that the current temperature change rate of the air conditioner is less than or equal to the preset temperature change rate in the current operating mode, the set maximum frequency in the current operating mode of the air conditioner remains unchanged.

[0084] Specifically, after the air conditioner is started, if the indoor ambient temperature is detected to be below the set temperature of the current operating mode, the air conditioner will operate at the maximum frequency set in the current operating mode; if the indoor ambient temperature is detected to be above the set temperature of the current operating mode, the air conditioner will operate at the low frequency preset in the current operating mode.

[0085] Different operating modes correspond to different preset temperature change rates. For example, the preset temperature change rate in cooling mode is the preset cooling temperature drop rate S. 冷 The preset temperature change rate corresponding to the heating mode is the preset heating temperature rise rate S. 热 It determines whether the current temperature change rate S of the air conditioner is greater than the preset temperature change rate in the current operating mode. For example, in cooling mode, it determines whether S > S 冷 In heating mode, determine whether S > S 热 If the condition is met under cooling mode, then S > S 冷 In cooling mode, the maximum frequency setting is reduced by the preset frequency value; or, in heating mode, if the condition is satisfied that S > S 热 If the maximum frequency in the air conditioner's heating mode is reduced by a preset frequency value, the preset frequency value can be, for example, 2Hz.

[0086] The adjustment unit 130 is also used to: restore the set maximum frequency of the air conditioner in the current operating mode to the initially set maximum frequency after the air conditioner is turned off or the power is cut off.

[0087] Specifically, each time S > S 冷 Or S > S 热 At that time, the maximum frequency is set to decrease by the preset frequency value until S is detected to be less than the preset value, i.e., S ≤ S. 冷 or S≤S 热 When the air conditioner is turned off or the power is cut off, the maximum frequency setting will not decrease. When the air conditioner is turned off or the power is cut off, the previous maximum frequency setting will be restored, that is, it will be restored to the initial maximum frequency setting.

[0088] The purpose of restoring the initial maximum frequency setting here includes: First, because the actual starting temperature of the room varies each time the air conditioner is used, a higher frequency allows the room to reach the set temperature more quickly, improving user comfort. Second, if the reduced high frequency cannot meet the user experience, it cannot be restored to the initial high frequency (maximum frequency setting). Third, if the user's air conditioner needs to be used in a different space, it needs to readjust to the new environment.

[0089] In inverter air conditioners, after being remotely started, the unit operates at its maximum frequency until the set temperature is reached, then stops. When the indoor temperature rises, the air conditioner again operates at its maximum frequency until the set temperature is reached, then operates at a lower frequency. This system operates at maximum frequency every time it starts, which is suitable for larger rooms where the ambient temperature differs significantly from the set temperature, allowing the room temperature to reach the set temperature quickly. However, when the room is relatively small (i.e., the air conditioner is larger than the installation space), if it always operates at the highest frequency, the compressor remains in a high-power state, resulting in relatively high power consumption and louder compressor noise, which is detrimental to the user experience. When the selected air conditioner is larger than the room size, it operates at its maximum frequency every time the temperature needs to be adjusted, resulting in wasted power due to full-load operation. The high-frequency compressor noise is also relatively loud, transmitting a louder sound to the user through the indoor unit. Maintaining high-frequency operation also increases compressor wear and reduces the air conditioner's lifespan.

[0090] According to the technical solution of this invention, after the air conditioner is turned on, the compressor first runs at a low frequency according to the preset maximum frequency of the whole machine until it reaches the set temperature point. On the one hand, this can quickly cool the room and ensure comfort; on the other hand, because the initial temperature of the room when the air conditioner is turned on may not be the same each time, and the height of the air conditioner installation may affect whether the temperature change rate of the air conditioner is normal. When the ambient temperature rises, the air conditioner runs at a high frequency for the second time until it reaches the set temperature point, and then runs at a low frequency. At this time, the difference Δt between the ambient temperature t0 at the start of high frequency operation and the set temperature t1 (or the difference Δt between the set temperature t1 and the ambient temperature t0 at the start of high frequency operation), and the difference ΔT between the compressor low frequency operation start time T0 and the high frequency start time T1 are detected. By calculating the temperature change rate and the preset cooling temperature drop rate S_cold or the preset heating temperature rise rate S_heat, the upper limit frequency of the air conditioner is corrected. The preset frequency value is decreased by 2 Hz each time until the optimal frequency point is reached, that is, the preset maximum frequency when S ≤ S_cold or S ≤ S_heat, thereby improving the user's comfort.

[0091] The present invention also provides a storage medium corresponding to the control method of the air conditioner, wherein a computer program is stored thereon, and the program, when executed by a processor, implements the steps of any of the aforementioned methods.

[0092] The present invention also provides an air conditioner corresponding to the control method of the air conditioner, comprising a processor, a memory, and a computer program stored in the memory that can run on the processor, wherein the processor executes the program to implement the steps of any of the aforementioned methods.

[0093] The present invention also provides an air conditioner corresponding to the control device of the air conditioner, including any of the control devices described above.

[0094] Accordingly, the solution provided by this invention determines the rate of temperature drop in room mode and the rate of temperature rise in room mode, and then adjusts the upper limit of the maximum operable frequency based on the determination result. If the rate of temperature drop in room mode under cooling conditions and the rate of temperature rise in room mode under heating conditions are slow, the adjustment of the upper limit of the maximum operable frequency is then terminated.

[0095] By detecting the rate of temperature change in the room where the air conditioner is used, the upper limit frequency of the air conditioner (i.e., the maximum set frequency) is gradually reduced until it adapts to the optimal state for the size of the room, thereby improving user comfort.

[0096] The functions described herein can be implemented in hardware, software executed by a processor, firmware, or any combination thereof. If implemented in software executed by a processor, the functions can be stored as one or more instructions or codes on or transmitted via a computer-readable medium. Other examples and embodiments are within the scope and spirit of this invention and the appended claims. For example, due to the nature of software, the functions described above can be implemented using software executed by a processor, hardware, firmware, hardwired, or any combination thereof. Furthermore, the functional units can be integrated into a single processing unit, or each unit can exist physically separately, or two or more units can be integrated into a single unit.

[0097] 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.

[0098] The units described as separate components may or may not be physically separate. Similarly, the components of the control device may or may not be physical units; they may be located in one place or distributed across multiple units. Some or all of the units can be selected to achieve the purpose of this embodiment, depending on actual needs.

[0099] If the integrated unit is implemented as a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention, in essence, or the part that contributes to related technologies, or all or part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of the present invention. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, read-only memory (ROM), random access memory (RAM), portable hard drives, magnetic disks, or optical disks.

[0100] The above description is merely an embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of the claims of the present invention.

Claims

1. A method for controlling an air conditioner, characterized in that, include: After the air conditioner is started and runs at the maximum frequency set in the current operating mode for the second time, when the indoor ambient temperature is detected to reach the set temperature in the current operating mode, the air conditioner runs at the low frequency preset in the current operating mode, and the current temperature change rate of the air conditioner is obtained. The current temperature change rate of the air conditioner is the rate at which the air conditioner changes temperature when it starts running at the maximum frequency set in the current operating mode until the indoor ambient temperature is detected to reach the set temperature in the current operating mode. Determine whether the current temperature change rate of the air conditioner is greater than the preset temperature change rate under the current operating mode of the air conditioner; If it is determined that the current temperature change rate of the air conditioner is greater than the preset temperature change rate in the current operating mode, then the set maximum frequency in the current operating mode of the air conditioner is reduced by a preset frequency value. Wherein, after the air conditioner is started, when the absolute value of the temperature difference between the indoor ambient temperature and the set temperature in the current operating mode is detected to be greater than the preset temperature difference value, the air conditioner operates at the maximum frequency set in the current operating mode; when the indoor ambient temperature is detected to reach the set temperature in the current operating mode, the air conditioner operates at the preset low frequency in the current operating mode. When the air conditioner is turned off or the power is cut off, the maximum frequency set in the current operating mode of the air conditioner will be restored to the initial maximum frequency set.

2. The method according to claim 1, characterized in that, When the indoor ambient temperature is detected to have reached the set temperature in the current operating mode, the air conditioner operates at a preset low-frequency operating frequency in the current operating mode, and the current temperature change rate of the air conditioner is obtained, including: The system obtains the current indoor ambient temperature before the air conditioner starts operating at the maximum set frequency in the current operating mode, before detecting that the indoor ambient temperature has reached the set temperature in the current operating mode. The time taken for the air conditioner to operate at the maximum frequency set in the current operating mode until the indoor ambient temperature is detected to reach the set temperature in the current operating mode is obtained. This operating time is called the high-frequency operating time. The current temperature change rate of the air conditioner is determined based on the ratio of the difference between the current indoor ambient temperature and the set temperature in the current operating mode to the high-frequency operating time, or the ratio of the difference between the set temperature in the current operating mode and the current indoor ambient temperature to the high-frequency operating time.

3. The method according to claim 1 or 2, characterized in that, Also includes: Determine whether the current operating mode of the air conditioner is cooling mode or heating mode; If the current operating mode of the air conditioner is determined to be either cooling mode or heating mode, after the air conditioner starts and runs for the second time at the maximum frequency set in the current operating mode, when the indoor ambient temperature is detected to have reached the set temperature, the air conditioner runs at the preset low frequency in the current operating mode, and the current temperature change rate of the air conditioner is obtained.

4. The method according to claim 1 or 2, characterized in that, Also includes: If it is determined that the current temperature change rate of the air conditioner is less than or equal to the preset temperature change rate in the current operating mode, then the set maximum frequency in the current operating mode of the air conditioner remains unchanged.

5. A control device for an air conditioner, characterized in that, include: The acquisition unit is used to acquire the current temperature change rate of the air conditioner after the air conditioner has been started and has been running for the second time at the maximum frequency set in the current operating mode. When the indoor ambient temperature is detected to have reached the set temperature in the current operating mode and the air conditioner is running at a preset low frequency in the current operating mode, the acquisition unit is used to acquire the current temperature change rate of the air conditioner. The current temperature change rate of the air conditioner is the rate at which the air conditioner changes temperature when it starts running at the maximum frequency set in the current operating mode until the indoor ambient temperature is detected to reach the set temperature in the current operating mode. The first judgment unit is used to judge whether the current temperature change rate of the air conditioner obtained by the acquisition unit is greater than the preset temperature change rate in the current operating mode of the air conditioner. An adjustment unit is configured to reduce the set maximum frequency of the current operating mode of the air conditioner by a preset frequency value if the first judgment unit determines that the current temperature change rate of the air conditioner is greater than the preset temperature change rate in the current operating mode. Wherein, after the air conditioner is started, when the absolute value of the temperature difference between the indoor ambient temperature and the set temperature in the current operating mode is detected to be greater than the preset temperature difference value, the air conditioner operates at the maximum frequency set in the current operating mode; when the indoor ambient temperature is detected to reach the set temperature in the current operating mode, the air conditioner operates at the preset low frequency in the current operating mode. The adjustment unit is also used to: restore the set maximum frequency of the air conditioner in its current operating mode to the initially set maximum frequency after the air conditioner is turned off or the power is cut off.

6. The apparatus according to claim 5, characterized in that, The acquisition unit, when detecting that the indoor ambient temperature has reached the set temperature in the current operating mode, and the air conditioner is running at a preset low-frequency operating frequency in the current operating mode, acquires the current temperature change rate of the air conditioner, including: The system obtains the current indoor ambient temperature before the air conditioner starts operating at the maximum set frequency in the current operating mode, before detecting that the indoor ambient temperature has reached the set temperature in the current operating mode. The time taken for the air conditioner to operate at the maximum frequency set in the current operating mode until the indoor ambient temperature is detected to reach the set temperature in the current operating mode is obtained. This operating time is called the high-frequency operating time. The current temperature change rate of the air conditioner is determined based on the ratio of the difference between the current indoor ambient temperature and the set temperature in the current operating mode to the high-frequency operating time, or the ratio of the difference between the set temperature in the current operating mode and the current indoor ambient temperature to the high-frequency operating time.

7. The apparatus according to claim 5 or 6, characterized in that, Also includes: The second judgment unit is used to determine whether the current operating mode of the air conditioner is cooling mode or heating mode. When the second judgment unit determines that the current operating mode of the air conditioner is cooling mode or heating mode, after the air conditioner starts and runs for the second time at the maximum frequency set in the current operating mode, when the indoor ambient temperature is detected to reach the set temperature, the air conditioner runs at the preset low frequency in the current operating mode, and the acquisition unit acquires the current temperature change rate of the air conditioner.

8. The apparatus according to claim 5 or 6, characterized in that, The adjustment unit is further configured to: if the first judgment unit determines that the current temperature change rate of the air conditioner is less than or equal to the preset temperature change rate in the current operating mode, then the set maximum frequency in the current operating mode of the air conditioner remains unchanged.

9. A storage medium, characterized in that, It stores a computer program that, when executed by a processor, implements the steps of the method according to any one of claims 1-4.

10. An air conditioner, characterized in that, It includes a processor, a memory, and a computer program stored in the memory that can run on the processor, wherein the processor executes the program to implement the steps of the method of any one of claims 1-4, or includes a control device for an air conditioner as described in any one of claims 5-8.

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