A control method and system for an air conditioning apparatus, and an air conditioning apparatus

Abstract

The application relates to the technical field of air conditioner control, in particular to a control method and device for an air conditioner and the air conditioner, which comprises the following steps: step S1: obtaining a user-specified temperature and an indoor temperature, and obtaining a first temperature difference according to the specified temperature and the indoor temperature; step S2: judging whether the first temperature difference is greater than a temperature threshold value, if yes, sending a first control instruction to a compressor, and if no, sending a second control instruction to the compressor; the first control instruction is sent to the compressor to improve the refrigeration or heating speed and improve the user experience. When the first temperature difference is small, it indicates that the temperature to be adjusted by the air conditioner is small, and the compressor does not need to work at a high frequency, so the second control instruction is sent to the compressor to slowly adjust the temperature, thereby meeting the energy-saving demand of the user.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of air conditioner control, in particular to a control method and device for air conditioner equipment and the air conditioner equipment. BACKGROUND

[0002] With the continuous progress of economy, the application of air conditioners is also more and more widely used, because the air conditioner can bring comfortable experience to the user by adjusting the indoor environment temperature, and the air conditioner becomes one of the most common household appliances. The frequency conversion air conditioner refers to the conventional air conditioner with a frequency converter, and the core is to control and adjust the speed of the compressor through the frequency converter, so that the air conditioner is always in the best speed state, thereby improving the energy efficiency ratio and realizing the energy saving effect.

[0003] However, the existing frequency conversion air conditioner keeps the indoor temperature constant by controlling the frequency of the compressor after the indoor temperature reaches the temperature specified by the user, thereby realizing the purpose of energy saving. However, before the temperature rises, the air conditioner works at a low frequency for a long time, so that the air conditioner equipment cannot meet the user's demand for rapid cooling or heating, affecting the user experience. SUMMARY

[0004] In view of the above defects, the purpose of the present application is to provide a control method and device for air conditioner equipment and air conditioner equipment, so that the air conditioner can quickly adjust the indoor temperature to the temperature specified by the user, and improve the user experience.

[0005] To achieve this purpose, the present application adopts the following technical scheme: a control method for air conditioner equipment, comprising the following steps:

[0006] Step S1: obtaining the temperature specified by the user and the indoor temperature, and obtaining the first temperature difference according to the specified temperature and the indoor temperature;

[0007] Step S2: determining whether the first temperature difference is greater than the temperature threshold, if greater, sending a first control instruction to the compressor; if less, sending a second control instruction to the compressor;

[0008] The first control instruction is: controlling the compressor to adjust the frequency to the first preset frequency within the first preset time and maintaining the first holding time, wherein the first preset time is greater than or equal to 0.1 seconds and less than or equal to 5 seconds, the first preset frequency is greater than or equal to 25%*aHz and less than or equal to 32.5%*aHz, and the first holding time is greater than or equal to 5 seconds and less than or equal to 15 seconds;

[0009] Then control the compressor to adjust the frequency to the second preset frequency within the second preset time, wherein the second preset time is greater than or equal to 0.1 seconds and less than or equal to 5 seconds, and the second preset frequency is greater than or equal to 50%*aHz and less than or equal to 80%*aHz;

[0010] The second control instruction is: controlling the compressor to adjust the frequency to a third preset frequency within a first preset time, wherein the third preset frequency is greater than or equal to 10%*a Hz and less than or equal to 20%*a Hz;

[0011] Wherein a is the maximum operating frequency of the compressor.

[0012] Preferably, after executing the first control instruction, a third preset time is waited, the operating parameter of the compressor is obtained, and the predicted maximum exhaust pressure of the current compressor is calculated according to the operating parameter.

[0013] The actual exhaust pressure of the current compressor is obtained, and it is judged whether the actual exhaust pressure is greater than the predicted maximum exhaust pressure. If it is greater, the frequency reduction processing of the compressor is performed, and the second control instruction is adjusted. If it is less, the first control instruction is maintained.

[0014] Preferably, the method for obtaining the predicted maximum exhaust pressure is:

[0015] After waiting for a second preset time, the temperature of the compressor is obtained as a first temperature.

[0016] After waiting for a third preset time, the temperature of the compressor is obtained as a second temperature.

[0017] The temperature change rate of the compressor is obtained according to the first temperature, the second temperature and the third preset time.

[0018] The humidity change rate in the environment of the compressor is obtained based on the temperature change rate.

[0019] The predicted maximum exhaust pressure is obtained through the temperature change rate, the humidity change rate and the operating parameter of the compressor.

[0020] Preferably, the formula for obtaining the humidity change rate is as follows:

[0021] ;

[0022] Wherein The temperature change rate, h is the humidity data in the weather data, A is the surface equivalent heat dissipation area of the compressor, The influence coefficient of air convection on humidity in the environment, The change amount of the humidity of the environment of the compressor between the end of the second preset time and the end of the third preset time;

[0023] The obtaining step of the predicted maximum exhaust pressure is as follows:

[0024] The ideal maximum exhaust pressure of the operating data in the compressor is obtained.

[0025] acquire the ambient humidity of the compressor based on the humidity change rate, humidity data in the weather data and the running time length, determine the value of the first adjustment coefficient based on the ambient humidity of the compressor;

[0026] acquire the intake temperature of the compressor based on the temperature change rate, the initial gas temperature of the compressor and the running time length;

[0027] correct the intake temperature of the compressor according to the ambient humidity of the compressor to obtain a corrected temperature, and determine the value of the second adjustment coefficient based on the corrected temperature;

[0028] correct the ideal maximum exhaust pressure by the first adjustment coefficient and the second adjustment coefficient to obtain the predicted maximum exhaust pressure;

[0029] wherein the formula for obtaining the corrected temperature is as follows:

[0030] ;

[0031] wherein T is the intake temperature of the compressor, H is the ambient humidity of the compressor, are adjustment parameters, is a constant greater than zero.

[0032] A control system for an air conditioning device, comprising a temperature difference acquisition module and an adjustment module;

[0033] The temperature difference acquisition module comprises acquiring a user-specified temperature and an indoor temperature, and acquiring a first temperature difference based on the specified temperature and the indoor temperature;

[0034] The adjustment module is configured to determine whether the first temperature difference is greater than a temperature threshold, and if so, send a first control instruction to the compressor, and if not, send a second control instruction to the compressor.

[0035] Preferably, it further comprises a security module;

[0036] The security module is configured to, after executing the first control instruction, wait for a third preset time, acquire the running parameters of the compressor, and calculate the predicted maximum exhaust pressure of the current compressor based on the running parameters;

[0037] acquire the actual exhaust pressure of the current compressor, determine whether the actual exhaust pressure is greater than the predicted maximum exhaust pressure, and if so, adjust to the second control instruction, and if not, maintain the first control instruction.

[0038] Preferably, the security module comprises a maximum exhaust pressure prediction sub-module;

[0039] The maximum exhaust pressure prediction sub-module is configured to, after waiting for a second preset time, acquire the temperature of the compressor as a first temperature;

[0040] After waiting for the third preset time, the temperature of the compressor is acquired as a second temperature;

[0041] A temperature change rate of the compressor is acquired according to the first temperature, the second temperature and the third preset time;

[0042] A humidity change rate in the compressor environment is acquired based on the temperature change rate;

[0043] A predicted maximum exhaust pressure is acquired through the temperature change rate, the humidity change rate and an operating parameter of the compressor.

[0044] An air conditioning device, comprising the control system for the air conditioning device.

[0045] The above technical solution has the following advantages or beneficial effects: in the present application, a first temperature difference is first acquired, and the first temperature difference can be used to determine the temperature that needs to be adjusted by the air conditioner; when the first temperature difference is large, the compressor needs to operate at a high frequency, and a first control instruction is sent to the compressor to increase the speed of refrigeration or heating and improve the user experience; when the first temperature difference is small, the temperature that needs to be adjusted by the air conditioner is small, and the compressor does not need to operate at a high frequency, and a second control instruction is sent to the compressor to adjust the temperature at a slow speed to meet the energy-saving needs of the user. BRIEF DESCRIPTION OF DRAWINGS

[0046] Fig. 1 is a flowchart of an embodiment of the method of the present application.

[0047] Fig. 2 is a structural schematic diagram of an embodiment of the system of the present application. DETAILED DESCRIPTION

[0048] Embodiments of the present application will be described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals represent the same or similar elements throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application, and cannot be understood as limiting the present application.

[0049] In the description of the embodiments of the present application, the terms "first", "second" are only used for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features. In the description of the embodiments of the present application, the meaning of "multiple" is two or more, unless otherwise specifically limited.

[0050] In addition, the terms "first", "second", "third", etc. are used only for descriptive purposes and should not be construed as indicating or implying relative importance or an ordered ranking of the indicated technical features. Thus, features defined with "first", "second" or "third" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "a plurality of" is two or more, unless otherwise specified. The specific meanings of the above terms in the present application can be understood by those of ordinary skill in the art on a case-by-case basis.

[0051] As shown in Figs. 1-2 A control method for an air conditioning device, comprising the following steps:

[0052] Step S1: Obtain the user specified temperature and the indoor temperature, and obtain the first temperature difference according to the specified temperature and the indoor temperature;

[0053] Step S2: Determine whether the first temperature difference is greater than the temperature threshold value, if greater, send the first control instruction to the compressor; if less, send the second control instruction to the compressor;

[0054] In the present application, the first temperature difference will be obtained first, and the temperature that needs to be adjusted by the air conditioner can be determined by the first temperature difference. When the first temperature difference is large, the compressor needs to operate at high frequency, at this time the first control instruction is sent to the compressor to improve the speed of refrigeration or heating and improve the user experience. When the first temperature difference is small, it means that the temperature that needs to be adjusted by the air conditioner is small, and the compressor does not need to work at high frequency, at this time the second control instruction is sent to the compressor to adjust the temperature at a slow speed to meet the user's energy saving demand.

[0055] Of course, when the indoor temperature reaches the user specified temperature, the conventional variable frequency technology can be used to control the compressor, which will not be described in detail here.

[0056] The first control instruction is to control the compressor to adjust the frequency to the first preset frequency within the first preset time and maintain the first holding time, wherein the first preset time is greater than or equal to 0.1 seconds and less than or equal to 5 seconds, the first preset frequency is greater than or equal to 25%*aHz and less than or equal to 32.5%*aHz, and the first holding time is greater than or equal to 5 seconds and less than or equal to 15 seconds;

[0057] When the air conditioning device receives the first control instruction to enter the cooling or heating mode, the compressor is controlled to quickly increase from 0 to a first preset frequency in a short first preset time, wherein the first time is preferably 1-5 seconds, for example 3 seconds, and the first preset frequency is preferably 32.5%*aHz, so as to quickly increase to an intermediate frequency in a very short time. The compressor is maintained at the intermediate frequency for a short first holding time, which is preferably 8-12 seconds, for example 12 seconds. It should be noted that the above-mentioned frequency conversion of the compressor is converted into the rotating speed at a rate of 1 Hz equal to 60 r / min.

[0058] The second control instruction is to control the compressor to increase to a third preset frequency in the first preset time, wherein the third preset frequency is greater than or equal to 10%*aHz and less than or equal to 20%*aHz.

[0059] The second control instruction is to control the compressor to increase to a third preset frequency in the first preset time, wherein the third preset frequency is greater than or equal to 10%*aHz and less than or equal to 20%*aHz.

[0060] The compressor is then increased to 80%*aHz in 3 seconds. That is, the compressor is increased from 0 to 80%*aHz in a total of 18 seconds. Thus, the compressor is quickly increased to a high frequency in a very short time, so that the air conditioning device can quickly enter the cooling state, and the cooling capacity is quickly increased, thereby meeting the user's demand for quick cooling and improving the user experience.

[0061] In this embodiment, the compressor is increased to a high frequency in two stages, which can avoid some problems that are prone to occur in the process of quickly increasing the frequency of the compressor. It has been found through experiments that if the compressor is controlled to increase from 0 to a high frequency in a very short time, the problem of overcurrent protection is prone to occur in the process of increasing the frequency of the compressor. In this embodiment, the compressor is increased to a high frequency in two stages, that is, the compressor is first increased to an intermediate frequency and maintained for a period of time in the first stage, and then increased to a high frequency, which can effectively avoid the problem of overcurrent protection that is prone to occur in the process of quickly increasing the frequency of the compressor. Moreover, according to the characteristics of the compressor, the compressor is maintained at the intermediate frequency for a period of time after the first-stage frequency conversion, which can ensure that the lubricating oil supply of the compressor is sufficient, so as to ensure that the internal rotor and other mechanical parts of the compressor are in a normal lubrication state, thereby improving the working reliability of the compressor. Although the total time for increasing the compressor to a high frequency is relatively increased compared with the mode of increasing the compressor to a high frequency at one time, the time is very short, for example 18 seconds, which can fully meet the user's demand for quick cooling, and can avoid the problems of overcurrent protection of the compressor and insufficient oil supply of the compressor in the process of increasing the frequency, thereby improving the working reliability of the air conditioning device.

[0062] The control method for the air conditioning equipment according to the embodiment of the present application controls the compressor to be frequency-modulated to a first preset frequency within a first preset time and maintained for a first holding time after the air conditioning equipment is started, and then controls the compressor to be frequency-modulated to a second preset frequency which is higher within a second preset time, so that the compressor can be raised to a higher frequency within a very short time, satisfying the user's requirement for rapid refrigeration and heating. Moreover, since the two frequency-raising stages are passed through, a frequency maintaining process is provided between the two frequency-raising stages, so as to avoid the over-current protection and the lubrication problem caused by insufficient oil supply which are prone to occur in the process of rapid frequency raising of the compressor, improving the working reliability of the air conditioning equipment.

[0063] The second control instruction is to control the compressor to be frequency-modulated to a third preset frequency within the first preset time, wherein the third preset frequency is greater than or equal to 10%*a Hz and less than or equal to 20%*a Hz.

[0064] When the low-frequency operation is performed, the third preset frequency can be reduced, and then the frequency is adjusted within a short time, so that the air conditioner can quickly enter the working state. Since the rotating speed of the compressor is not fast when the low-frequency operation is performed, it is not necessary to consider whether the lubrication is sufficient, so the operating power of the compressor can be forcibly adjusted from 0 to between 10%*a Hz and 20%*a Hz within the first preset time.

[0065] Wherein a is the maximum operating frequency of the compressor.

[0066] Preferably, after the first control instruction is executed, a third preset time is waited, the operating parameter of the compressor is acquired, and the predicted maximum discharge pressure of the current compressor is calculated according to the operating parameter.

[0067] The actual discharge pressure of the current compressor is acquired, it is judged whether the actual discharge pressure is greater than the predicted maximum discharge pressure, if greater, the second control instruction is adjusted, and if less, the first control instruction is maintained.

[0068] Since the compressor works at a high frequency after executing the first control instruction, the pressure of the exhaust gas of the compressor will become large, and when the pressure of the exhaust gas is greater than the maximum exhaust pressure, the compressor will be difficult to exhaust, thereby causing the compressor to stop. The maximum exhaust pressure is usually detected by the manufacturer in a standard environment. However, the actual application scene is different from the scene when the detection is performed, and is affected by the humidity and temperature of the weather and the aging of the equipment. If the maximum exhaust pressure (ideal maximum exhaust pressure) given by the manufacturer is directly used for control, the equipment may be damaged. Therefore, in the present application, when the compressor is executed for the third preset time according to the first control instruction, the compressor tends to be stable, and the subsequent exhaust pressure also tends to be stable. At this time, the operating parameters of the compressor are obtained, wherein the operating parameters include the temperature, humidity and ideal maximum exhaust pressure for actual maximum exhaust pressure prediction, to obtain the predicted maximum exhaust pressure, and then the predicted maximum exhaust pressure is adjusted.

[0069] When the actual exhaust pressure of the compressor is greater than the predicted maximum exhaust pressure, the exhaust of the compressor may have problems, and therefore the frequency of the compressor needs to be reduced, and the second control instruction needs to be adjusted to reduce the frequency to ensure that the compressor can normally exhaust.

[0070] When the actual exhaust pressure is less than the predicted maximum exhaust pressure, the first control instruction can be continued and maintained to continue working at a high power. Preferably, the method for obtaining the predicted maximum exhaust pressure is as follows:

[0071] After waiting for the second preset time, the temperature of the compressor is obtained as the first temperature;

[0072] After waiting for the third preset time, the temperature of the compressor is obtained as the second temperature;

[0073] According to the first temperature, the second temperature and the third preset time, the temperature change rate of the compressor is obtained;

[0074] Based on the temperature change rate, the humidity change rate in the environment of the compressor is obtained;

[0075] The predicted maximum exhaust pressure is obtained by the temperature change rate, the humidity change rate and the operating parameters of the compressor.

[0076] The first temperature is the temperature of the compressor when the first control instruction is maintained, and the temperature is not stable and changes with the working time. The second temperature is the temperature of the compressor after working for the third preset time, and the temperature of the compressor tends to be stable and does not change after working for a period of time. At this time, the temperature change rate of the compressor can be obtained by the first temperature and the second temperature.

[0077] Another factor affecting the exhaust pressure is humidity. Generally, the compressor of an air conditioner is placed outdoors, and the compressor is greatly affected by the humidity of the external environment. In addition, temperature also affects humidity, so the humidity change rate cannot be obtained in a linear manner as the temperature change rate. Therefore, in the present application, the humidity change rate in the compressor environment is obtained based on the temperature change rate. This method avoids the errors and inconvenience that may be caused by directly measuring humidity, and can reflect the dynamic changes of environmental humidity in real time, thereby improving the accuracy of the calculation.

[0078] The technical solution indirectly obtains the humidity change rate in the environment by real-time monitoring of the temperature change rate of the compressor, and then predicts the maximum exhaust pressure of the compressor. This has the advantages of real-time, accuracy, intelligence, automation, cost control, and maintenance optimization. These advantages collectively improve the operating efficiency and stability of the compressor, and reduce maintenance costs and downtime risks.

[0079] Preferably, the formula for obtaining the humidity change rate is as follows:

[0080] ;

[0081] wherein is the temperature change rate, h is the humidity data in the weather data, A is the surface equivalent heat dissipation area of the compressor, is the influence coefficient of air convection on humidity in the environment, is the change amount of the environmental humidity of the compressor between the end of the second preset time and the end of the third preset time;

[0082] The steps for obtaining the predicted maximum exhaust pressure are as follows:

[0083] Obtain the ideal maximum exhaust pressure of the compressor in the running data;

[0084] Obtain the environmental humidity of the compressor based on the humidity change rate, the humidity data in the weather data, and the running time length. Determine the value of the first adjustment coefficient based on the environmental humidity of the compressor;

[0085] The running time length is the first preset time + the first holding time + the second preset time + the third preset time. The environmental humidity of the compressor can be calculated based on the humidity data in the weather data, the humidity change rate, and the running time length. For example, the humidity data in the weather data is 70%, the humidity change rate is 0.25% / s, and the running time length is 2 minutes.

[0086] The ambient humidity of the compressor at this time is: 70%-0.25% / s*120=40%. The humidity range of each compressor corresponds to a value of the first adjustment coefficient, for example, when the humidity is 0-10%, the value of the first adjustment coefficient is A1, when the humidity is 10%-20%, the value of the first adjustment coefficient is A2, and so on.

[0087] The intake temperature of the compressor is obtained based on the temperature change rate, the initial gas temperature of the compressor, and the running time length;

[0088] The intake temperature of the compressor is corrected according to the ambient humidity of the compressor to obtain a corrected temperature, and the value of the second adjustment coefficient is determined according to the corrected temperature;

[0089] The initial gas temperature of the compressor is the temperature when the first control instruction is not received, at this time, since the compressor has not started, the initial gas temperature of the compressor can be set as the temperature measured by the manufacturer by default, and then the intake temperature of the compressor, for example, the initial gas temperature of the compressor is 10°C, the temperature change rate is 0.5°C / s, and the running time length is 2 minutes;

[0090] The intake temperature of the compressor at this time is: (10°C+0.5°C / s*120)*0.5=35°C. 0.5 is an adjustment parameter. However, the calculated intake temperature of the compressor is calculated by the temperature change rate of the external environment, and the external temperature change is caused by the change of the temperature of the compressor gas component. Moreover, the humidity of the air also affects the propagation of external heat. Therefore, in the present application, the intake temperature of the compressor is corrected according to the ambient humidity of the compressor, so that the intake temperature can be close to the actual intake temperature.

[0091] The humidity range of each compressor corresponds to a value of the first adjustment coefficient, for example, when the humidity is 0-10%, the value of the first adjustment coefficient is A1, when the humidity is 10%-20%, the value of the first adjustment coefficient is A2, and so on.

[0092] The predicted maximum exhaust pressure is obtained by correcting the ideal maximum exhaust pressure by the first adjustment coefficient and the second adjustment coefficient;

[0093] The formula for obtaining the corrected temperature is as follows:

[0094] ;

[0095] Where T is the intake temperature of the compressor, H is the ambient humidity of the compressor, are adjustment parameters, is a constant greater than zero.

[0096] A control system for an air conditioning device, comprising a temperature difference obtaining module and an adjusting module;

[0097] The temperature difference obtaining module comprises obtaining a user specified temperature and an indoor temperature, and obtaining a first temperature difference according to the specified temperature and the indoor temperature;

[0098] The adjusting module is used for judging whether the first temperature difference is greater than a temperature threshold value, if yes, sending a first control instruction to a compressor, if no, sending a second control instruction to the compressor.

[0099] Preferably, further comprising a security module;

[0100] The security module is used for waiting for a third preset time after executing the first control instruction, obtaining an operating parameter of the compressor, and calculating a predicted maximum exhaust pressure of the current compressor according to the operating parameter;

[0101] Obtaining an actual exhaust pressure of the current compressor, judging whether the actual exhaust pressure is greater than the predicted maximum exhaust pressure, if yes, adjusting to the second control instruction, if no, keeping the first control instruction.

[0102] Preferably, the security module comprises a maximum exhaust pressure prediction sub-module;

[0103] The maximum exhaust pressure prediction sub-module is used for obtaining a temperature of the compressor as a first temperature after waiting for a second preset time;

[0104] Obtaining a temperature of the compressor as a second temperature after waiting for a third preset time;

[0105] Obtaining a temperature change rate of the compressor according to the first temperature, the second temperature and the third preset time;

[0106] Obtaining a humidity change rate in an environment of the compressor based on the temperature change rate;

[0107] Obtaining the predicted maximum exhaust pressure through the temperature change rate, the humidity change rate and the operating parameter of the compressor.

[0108] An air conditioning device, comprising the control system for the air conditioning device.

[0109] In the description of the specification, reference to "one embodiment", "some embodiments", "an exemplary embodiment", "an example", "a specific example", or "some examples" means that a particular feature, structure, material, or characteristic being described is included in at least one embodiment or example of the application. The appearances of the phrases "in one embodiment", "in some embodiments", "in an exemplary embodiment", "an example", "a specific example", or "some examples" in various places in the specification are not necessarily referring to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics can be combined in any suitable manner in one or more embodiments or examples.

[0110] Although embodiments of the application have been shown and described, it will be appreciated that those skilled in the art can make various changes, modifications, substitutions and alterations thereto without departing from the principles and scope of the application, which are defined by the claims and their equivalents.

Claims

1. A control method for an air conditioning apparatus, characterized by, The method comprises the following steps: Step S1: obtaining a user-specified temperature and an indoor temperature, and obtaining a first temperature difference based on the specified temperature and the indoor temperature; Step S2: determining whether the first temperature difference is greater than a temperature threshold, and if so, sending a first control instruction to the compressor; if not, sending a second control instruction to the compressor; The first control instruction is to control the compressor to adjust the frequency to a first preset frequency within a first preset time and maintain the first preset frequency for a first holding time, wherein the first preset time is greater than or equal to 0.1 seconds and less than or equal to 5 seconds, the first preset frequency is greater than or equal to 25%*aHz and less than or equal to 32.5%*aHz, and the first holding time is greater than or equal to 5 seconds and less than or equal to 15 seconds; Then, the compressor is controlled to adjust the frequency to a second preset frequency within a second preset time, wherein the second preset time is greater than or equal to 0.1 seconds and less than or equal to 5 seconds, and the second preset frequency is greater than or equal to 50%*aHz and less than or equal to 80%*aHz; The second control instruction is to control the compressor to adjust the frequency to a third preset frequency within a first preset time, wherein the third preset frequency is greater than or equal to 10%*aHz and less than or equal to 20%*aHz; Wherein a is the maximum operating frequency of the compressor; After executing the first control instruction, a third preset time is waited, an operating parameter of the compressor is obtained, and a predicted maximum exhaust pressure of the current compressor is calculated based on the operating parameter; An actual exhaust pressure of the current compressor is obtained, and it is determined whether the actual exhaust pressure is greater than the predicted maximum exhaust pressure, and if so, the second control instruction is adjusted, and if not, the first control instruction is maintained; The method for obtaining the predicted maximum exhaust pressure is as follows: After waiting for a second preset time, the temperature of the compressor is obtained as a first temperature; After waiting for a third preset time, the temperature of the compressor is obtained as a second temperature; A temperature change rate of the compressor is obtained based on the first temperature, the second temperature, and the third preset time; A humidity change rate in the environment of the compressor is obtained based on the temperature change rate; The predicted maximum exhaust pressure is obtained by the temperature change rate, the humidity change rate, and the operating parameter of the compressor.

2. The control method for an air conditioning apparatus according to claim 1, wherein The formula for obtaining the humidity change rate is as follows: ； wherein is a rate of temperature change, h is humidity data in the weather data, A is a surface equivalent heat dissipation area of the compressor, is an influence coefficient of air convection in the environment on humidity, is a change amount of the environmental humidity of the compressor between the end of the second preset time and the end of the third preset time; The steps for obtaining the predicted maximum exhaust pressure are as follows: An ideal maximum exhaust pressure of the operating data in the compressor is obtained; An environmental humidity of the compressor is obtained based on the humidity change rate, humidity data in weather data, and operating duration, and a value of a first adjustment coefficient is determined based on the environmental humidity of the compressor; An intake temperature of the compressor is obtained based on the temperature change rate, an initial gas temperature of the compressor, and the operating duration; The intake temperature of the compressor is corrected based on the environmental humidity of the compressor to obtain a corrected temperature, and a value of a second adjustment coefficient is determined based on the corrected temperature; The predicted maximum exhaust pressure is obtained by correcting the ideal maximum exhaust pressure by the first adjustment coefficient and the second adjustment coefficient; The formula for obtaining the corrected temperature is as follows: ； where T is the intake temperature of the compressor, H is the ambient humidity of the compressor, are respectively adjustment parameters, is a constant greater than zero.

3. A control system for an air conditioning apparatus, characterized by, The method comprises a temperature difference obtaining module and an adjustment module; The temperature difference obtaining module comprises obtaining a user-specified temperature and an indoor temperature, and obtaining a first temperature difference based on the specified temperature and the indoor temperature; The adjusting module is configured to determine whether the first temperature difference is greater than a temperature threshold, and if so, send a first control instruction to the compressor, and if not, send a second control instruction to the compressor; Further comprising a security module; The security module is configured to, after executing the first control instruction, wait for a third preset time, acquire an operating parameter of the compressor, and calculate a predicted maximum exhaust pressure of the compressor according to the operating parameter; Acquire an actual exhaust pressure of the compressor, determine whether the actual exhaust pressure is greater than the predicted maximum exhaust pressure, and if so, perform a frequency reduction process on the compressor, adjust to the second control instruction, and if not, maintain the first control instruction; The security module comprises a maximum exhaust pressure prediction submodule; The maximum exhaust pressure prediction submodule is configured to, after waiting for a second preset time, acquire a temperature of the compressor as a first temperature; After waiting for a third preset time, acquire a temperature of the compressor as a second temperature; Acquire a temperature change rate of the compressor according to the first temperature, the second temperature, and the third preset time; Acquire a humidity change rate in an environment of the compressor based on the temperature change rate; Acquire the predicted maximum exhaust pressure through the temperature change rate, the humidity change rate, and the operating parameter of the compressor.

4. An air conditioning apparatus characterized by comprising: The air conditioning equipment comprises a control system for air conditioning equipment as claimed in claim 3.

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