Control method and system for air conditioning equipment and air conditioning equipment

Abstract

The invention relates to the technical field of air conditioner control, in particular to a control method and device for air conditioning equipment and the air conditioning equipment. The control method comprises the following steps that S1, the temperature specified by a user and the indoor temperature are obtained, and a first temperature difference is obtained according to the specified temperature and the indoor temperature; s2, whether the first temperature difference is larger than a temperature threshold value or not is judged, and if yes, a first control instruction is sent to a compressor; if yes, a second control instruction is sent to the compressor; and the first control instruction is sent to the compressor, so that the refrigerating or heating speed is increased, and the user experience is improved. And when the first temperature difference is small, it is indicated that the temperature needing to be adjusted by the air conditioner is small, the compressor does not need to work at high frequency, at the moment, a second control instruction is sent to the compressor, the temperature is adjusted at a slow speed, and the energy-saving requirement of a user is met.

Description

Technical Field

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

[0002] With the continuous progress of the economy, the application of air conditioners is becoming more and more widespread. Since air conditioners can bring users a comfortable experience by adjusting the indoor ambient temperature, air conditioners have become one of the most common household appliances. Inverter air conditioners refer to conventional air conditioners equipped with inverters. The core of inverter air conditioners is to control and adjust the speed of the compressor through the inverter so that the air conditioner is always in the best speed state, thereby improving the energy efficiency ratio and achieving energy saving effects.

[0003] However, the existing variable frequency air conditioner controls the frequency of the compressor to maintain a constant indoor temperature after the indoor temperature reaches the user's specified temperature, thereby achieving the purpose of energy saving. However, before the temperature rises, the air conditioner works at a lower frequency for a longer time, so that the air conditioner cannot meet the user's needs for rapid cooling or heating, affecting the user experience. Summary of the invention

[0004] In view of the above-mentioned defects, the purpose of the present invention is to propose a control method, a control device and an air-conditioning device for air-conditioning equipment, so that the air-conditioning equipment can quickly adjust the indoor temperature to the temperature specified by the user, thereby improving the user experience.

[0005] To achieve this purpose, the present invention adopts the following technical solution: a control method for air conditioning equipment, comprising the following steps:

[0006] 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;

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

[0008] The first control instruction is: 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;

[0009] Then control the compressor 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;

[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%*aHz and less than or equal to 20%*aHz;

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

[0012] Preferably, after executing the first control instruction, wait for a third preset time, obtain the operating parameters of the compressor, and calculate the predicted maximum exhaust pressure of the current compressor according to the operating parameters;

[0013] The 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. If so, the compressor is frequency-reduced and adjusted to the second control instruction. If so, 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, obtaining the temperature of the compressor as the first temperature;

[0016] After waiting for a third preset time, obtaining the temperature of the compressor as the second temperature;

[0017] Acquire a temperature change rate of the compressor according to the first temperature, the second temperature and a third preset time;

[0018] acquiring a humidity change rate in a compressor environment based on the temperature change rate;

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

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

[0021]

[0022] Where D r is the temperature change rate, h is the humidity data in the weather data, A is the equivalent heat dissipation area of ​​the compressor surface, β is the influence coefficient of air convection in the environment on humidity, and ΔH is the change in the ambient humidity of the compressor between the end of the second preset time and the end of the third preset time;

[0023] The steps to obtain the predicted maximum exhaust pressure are as follows:

[0024] Get the ideal maximum discharge pressure of the compressor operating data;

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

[0026] Obtaining the intake air temperature of the compressor based on the temperature change rate, the initial gas temperature of the compressor, and the operating time;

[0027] Correcting the intake air temperature of the compressor according to the ambient humidity of the compressor to obtain a corrected temperature, and determining the value of the second adjustment coefficient according to the corrected temperature;

[0028] The predicted maximum exhaust pressure is obtained by multiplying the ideal maximum exhaust pressure by the first adjustment coefficient and the second adjustment coefficient.

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

[0030] T i =T+ω*H*(T-θ)-τ*T*H;

[0031] Where T is the intake temperature of the compressor, H is the ambient humidity of the compressor, ω and τ are adjustment parameters, and θ is a constant greater than zero.

[0032] A control system for air conditioning equipment, comprising a temperature difference acquisition module and a regulation module;

[0033] The temperature difference adjustment module includes obtaining a user-specified temperature and an indoor temperature, and obtaining a first temperature difference according to the specified temperature and the indoor temperature;

[0034] The regulating module is used to determine whether the first temperature difference is greater than a temperature threshold, and if so, send a first control instruction to the compressor; if so, send a second control instruction to the compressor.

[0035] Preferably, it also includes a security module;

[0036] The security module is used to wait for a third preset time after executing the first control instruction, obtain the operating parameters of the compressor, and calculate the predicted maximum exhaust pressure of the current compressor according to the operating parameters;

[0037] The 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. If so, the pressure is adjusted to the second control instruction; if so, the first control instruction is maintained.

[0038] Preferably, the security module includes a maximum exhaust pressure prediction submodule;

[0039] The maximum exhaust pressure prediction submodule is used to obtain the temperature of the compressor as the first temperature after waiting for the second preset time;

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

[0041] Acquire a temperature change rate of the compressor according to the first temperature, the second temperature and a third preset time;

[0042] acquiring a humidity change rate in a compressor environment based on the temperature change rate;

[0043] The predicted maximum exhaust pressure is obtained through the temperature change rate, humidity change rate and compressor operating parameters.

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

[0045] One of the above technical solutions has the following advantages or beneficial effects: In the present invention, the first temperature difference is first obtained, and the temperature that the air conditioner needs to adjust can be determined by the first temperature difference. When the first temperature difference is large, the compressor needs to operate at a high frequency. At this time, a first control instruction is issued to the compressor to increase the speed of cooling or heating and improve the user experience. When the first temperature difference is small, it means that the temperature that the air conditioner needs to adjust is small, and the compressor does not need to work at a high frequency. At this time, a second control instruction is issued to the compressor to adjust the temperature at a slow speed to meet the user's energy-saving needs. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] Figure 1 is a flow chart of an embodiment of the method of the present invention.

[0047] Figure 2 It is a schematic diagram of the structure of an embodiment of the system of the present invention. DETAILED DESCRIPTION

[0048] The embodiments of the present invention are 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 or elements having the same or similar functions from beginning to end. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0049] In the description of the embodiments of the present invention, the terms "first" and "second" are used for descriptive purposes only and are not to be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the embodiments of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0050] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, the meaning of "plurality" is two or more. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0051] like Figures 1-2 As shown, a control method for air conditioning equipment includes the following steps:

[0052] 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;

[0053] Step S2: determining whether the first temperature difference is greater than a temperature threshold, if so, sending a first control instruction to the compressor; if less than, sending a second control instruction to the compressor;

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

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

[0056] The first control instruction is: 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 and enters the cooling or heating mode, the compressor is controlled to quickly adjust the frequency from zero to the first preset frequency within a short time of the first preset time, wherein the first time is further preferably 1 second to 5 seconds, for example, 3 seconds, and the first preset frequency is preferably 32.5%*aHz, so as to rise to an intermediate frequency in a very short time. And maintain the first holding time for a short time, and the first holding time is further preferably 8 seconds to 12 seconds, such as 12 seconds. It is worth noting that when the operating frequency of the above-mentioned compressor is converted into a rotation speed, 1Hz is equal to 60r / min (revolutions / minute) for conversion.

[0058] Then control the compressor 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;

[0059] The compressor rises to 80%*aHz in another 3 seconds. That is, it rises from zero to 80%*aHz in a total of 18 seconds. Thus, it rises to a higher frequency in a very short time, allowing the air-conditioning equipment to quickly enter the cooling state, and the cooling capacity increases rapidly, thereby meeting the user's rapid cooling needs and improving the user experience.

[0060] In this embodiment, the compressor rises to a higher frequency through two stages, which can avoid some problems that are prone to occur in the process of rapid frequency increase of the compressor. Through experiments, it is found that if the compressor is controlled to adjust the frequency from zero to a higher frequency in a very short time, it is easy to cause the problem of overcurrent protection caused by excessive operating current during the frequency increase operation of the compressor; in this embodiment, the compressor is adjusted to a higher frequency through two stages, that is, in the first stage, it first rises to an intermediate frequency and maintains for a period of time, and then rises to a higher frequency, which can effectively avoid the problem of overcurrent protection that is prone to occur in the process of rapid frequency increase of the compressor. Moreover, according to the characteristics of the compressor body, after adjusting the frequency to an intermediate frequency in the first stage and maintaining it for a period of time, it can ensure that the lubricating oil inside the compressor is adequately supplied, thereby ensuring that the mechanical parts such as the internal rotor are in a normal lubrication state, thereby improving the working reliability of the compressor. Although the total time to rise to a higher frequency is increased relative to the method of adjusting the frequency to a higher frequency, the time is also very short, such as the above-mentioned 18 seconds, which can fully meet the user needs of rapid cooling, and avoid the lubrication problems caused by compressor overcurrent protection and insufficient oil supply inside the compressor during the frequency increase process, thereby improving the working reliability of the air-conditioning equipment.

[0061] The control method for air conditioning equipment of the embodiment of the present invention controls the compressor to adjust the frequency to the first preset frequency within the first preset time and maintain the first holding time after the air conditioning equipment is turned on, and then controls the compressor to adjust the frequency to the higher second preset frequency within the second preset time, so that the compressor can rise to a higher frequency in a very short time to meet the user's rapid cooling and heating needs. In addition, since there are two frequency increase stages, there is a frequency holding process between the two frequency increase stages, thereby avoiding the lubrication problems caused by overcurrent protection and insufficient oil supply that are prone to occur in the compressor during the rapid frequency increase process, thereby improving the working reliability of the air conditioning equipment.

[0062] 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%*aHz and less than or equal to 20%*aHz;

[0063] When operating at a low frequency, the third preset frequency can be lowered, and then the frequency can be adjusted in a short time so that the air conditioner can quickly enter the working state. When operating at a low frequency, since the speed of the compressor is not fast, there is no need to consider whether the lubrication is sufficient. Therefore, the operating power of the compressor can be forced to be adjusted from 0 to 10%*aHz to 20%*aHz within the first preset time.

[0064] Where a is the maximum operating frequency of the compressor.

[0065] Preferably, after executing the first control instruction, wait for a third preset time, obtain the operating parameters of the compressor, and calculate the predicted maximum exhaust pressure of the current compressor according to the operating parameters;

[0066] The 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. If so, the pressure is adjusted to the second control instruction; if so, the first control instruction is maintained.

[0067] Since the compressor will work at a high frequency after executing the first control instruction, the exhaust pressure of the compressor will increase. When the exhaust pressure is greater than the maximum exhaust pressure, the compressor will be difficult to exhaust, resulting in the compressor shutting down. The maximum exhaust pressure is usually obtained by the manufacturer in a standard environment. However, the actual application scenario is different from the scenario during detection. In the actual scenario, it will be affected by the humidity, temperature and equipment aging of the weather. If the maximum exhaust pressure (ideal maximum exhaust pressure) given by the manufacturer is directly used for control, it may also cause equipment damage. For this reason, in the present invention, when the compressor executes the third preset time with the first control instruction, the compressor tends to stabilize, and the subsequent exhaust pressure will also tend to stabilize. At this time, the operating parameters of the compressor are obtained, wherein the operating parameters include temperature, humidity and ideal maximum exhaust pressure to predict the actual maximum exhaust pressure, obtain the predicted maximum exhaust pressure, and then adjust it by predicting the maximum exhaust pressure.

[0068] When the actual exhaust pressure of the compressor is greater than the predicted maximum exhaust pressure, there may be problems with the exhaust of the compressor. Therefore, the frequency of the compressor needs to be reduced. At this time, it is necessary to adjust to the second control instruction to reduce the frequency to ensure that the compressor can exhaust normally.

[0069] When the actual exhaust pressure is less than the predicted maximum exhaust pressure, the first control instruction can be continued to be executed and maintained, and the work can be continued with high-frequency power. Preferably, the method for obtaining the predicted maximum exhaust pressure is:

[0070] After waiting for a second preset time, obtaining the temperature of the compressor as the first temperature;

[0071] After waiting for a third preset time, obtaining the temperature of the compressor as the second temperature;

[0072] Acquire a temperature change rate of the compressor according to the first temperature, the second temperature and a third preset time;

[0073] acquiring a humidity change rate in a compressor environment based on the temperature change rate;

[0074] The predicted maximum exhaust pressure is obtained through the temperature change rate, humidity change rate and compressor operating parameters.

[0075] The first temperature is the temperature when the compressor starts to maintain the first control instruction. The temperature has not stabilized and will change with the working time. The second temperature is the temperature after the compressor has worked for a third preset time. At this time, the compressor has been running for a period of time and the temperature is close to being stable. At this time, the temperature change rate of the compressor can be obtained through the first temperature and the second temperature.

[0076] Another factor that affects the exhaust pressure is humidity. The compressor of a general air conditioner is placed outdoors. At this time, the compressor is greatly affected by the humidity of the external environment. At the same time, the temperature also affects the humidity. Therefore, the rate of change of humidity cannot be obtained in a linear manner like the rate of change of temperature. For this reason, in the present invention, the rate of change of humidity in the compressor environment is obtained based on the temperature rate of change. This method avoids the errors and inconveniences that may be caused by directly measuring humidity, and can reflect the dynamic changes of environmental humidity in real time. Improve the accuracy of the calculation.

[0077] This technical solution monitors the temperature change rate of the compressor in real time and indirectly obtains the humidity change rate in the environment to predict the maximum exhaust pressure of the compressor. It has the advantages of real-time, accuracy, intelligence, automation, cost control and maintenance optimization. These advantages jointly improve the operating efficiency and stability of the compressor and reduce maintenance costs and downtime risks.

[0078] Preferably, the formula for obtaining the humidity change rate is as follows:

[0079]

[0080] Where D r is the temperature change rate, h is the humidity data in the weather data, A is the equivalent heat dissipation area of ​​the compressor surface, β is the influence coefficient of air convection in the environment on humidity, and ΔH is the change in the ambient humidity of the compressor between the end of the second preset time and the end of the third preset time;

[0081] The steps to obtain the predicted maximum exhaust pressure are as follows:

[0082] Get the ideal maximum discharge pressure of the compressor operating data;

[0083] Acquire the ambient humidity of the compressor based on the humidity change rate, the humidity data in the weather data, and the running time, and determine the value of the first adjustment coefficient based on the ambient humidity of the compressor;

[0084] The operating time is the first preset time + the first holding time + the second preset time + the third preset time. The ambient humidity of the compressor can be calculated by the humidity data in the weather data, the humidity change rate and the operating time. For example, if the humidity data in the weather data is 70%, the humidity change rate is 0.25% / s, and the operating time is 2 minutes.

[0085] The ambient humidity of the compressor at this time is: 70%-0.25% / s*120=40%. Each range of ambient humidity of the compressor corresponds to a value of the first adjustment coefficient, for example, when the humidity is 0-10%, the corresponding value of the first adjustment coefficient is A1, and when the humidity is 10%-20%, the corresponding value of the first adjustment coefficient is A2, and so on.

[0086] Obtaining the intake air temperature of the compressor based on the temperature change rate, the initial gas temperature of the compressor, and the operating time;

[0087] Correcting the intake air temperature of the compressor according to the ambient humidity of the compressor to obtain a corrected temperature, and determining the value of the second adjustment coefficient according to the corrected temperature;

[0088] The initial gas temperature of the compressor is the temperature before the first control instruction is received. At this time, since the compressor has not started, the initial gas temperature of the compressor can be defaulted to the temperature measured by the manufacturer. Then, the intake temperature of the compressor can be obtained through the temperature change rate and the running time. 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 is 2 minutes;

[0089] At this time, the intake temperature of the compressor is: (10℃+0.5℃ / s*120)*0.5=35℃. 0.5 is the adjustment parameter. However, the calculated intake temperature of the compressor is calculated by the temperature change rate of the external environment, and the reason for the external temperature change is that the temperature of the working place of the gas component of the compressor changes. In addition, the humidity of the air will also affect the propagation of external heat. Therefore, in the present invention, the intake temperature of the compressor will be corrected according to the ambient humidity of the compressor, so that the intake temperature can be close to the actual intake temperature.

[0090] Each corrected temperature interval of the compressor corresponds to a value of the second adjustment coefficient. For example, when the temperature is 10°C to 13°C, the corresponding value of the second adjustment coefficient is B1, and when the temperature is 13°C to 16°C, the corresponding value of the second adjustment coefficient is B2, and so on.

[0091] The predicted maximum exhaust pressure is obtained by multiplying the ideal maximum exhaust pressure by the first adjustment coefficient and the second adjustment coefficient.

[0092] The formula for obtaining the corrected temperature is as follows:

[0093] T i =T+ω*H*(T-θ)-τ*T*H;

[0094] Where T is the intake temperature of the compressor, H is the ambient humidity of the compressor, ω and τ are adjustment parameters, and θ is a constant greater than zero.

[0095] A control system for air conditioning equipment, comprising a temperature difference acquisition module and a regulation module;

[0096] The temperature difference adjustment module includes obtaining a user-specified temperature and an indoor temperature, and obtaining a first temperature difference according to the specified temperature and the indoor temperature;

[0097] The regulating module is used to determine whether the first temperature difference is greater than a temperature threshold, and if so, send a first control instruction to the compressor; if so, send a second control instruction to the compressor.

[0098] Preferably, it also includes a security module;

[0099] The security module is used to wait for a third preset time after executing the first control instruction, obtain the operating parameters of the compressor, and calculate the predicted maximum exhaust pressure of the current compressor according to the operating parameters;

[0100] The 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. If so, the pressure is adjusted to the second control instruction; if so, the first control instruction is maintained.

[0101] Preferably, the security module includes a maximum exhaust pressure prediction submodule;

[0102] The maximum exhaust pressure prediction submodule is used to obtain the temperature of the compressor as the first temperature after waiting for the second preset time;

[0103] After waiting for a third preset time, obtaining the temperature of the compressor as the second temperature;

[0104] Acquire a temperature change rate of the compressor according to the first temperature, the second temperature and a third preset time;

[0105] acquiring a humidity change rate in a compressor environment based on the temperature change rate;

[0106] The predicted maximum exhaust pressure is obtained through the temperature change rate, humidity change rate and compressor operating parameters.

[0107] An air conditioning device comprises the control system for the air conditioning device.

[0108] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0109] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A control method for air conditioning equipment, characterized in that: The steps include: 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: determining whether the first temperature difference is greater than a temperature threshold, if so, sending a first control instruction to the compressor; if less than, sending a second control instruction to the compressor; The first control instruction is: 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; Then control the compressor 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: 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%*aHz and less than or equal to 20%*aHz; Where a is the maximum operating frequency of the compressor.

2. A control method for air conditioning equipment according to claim 1, characterized in that: After executing the first control instruction, waiting for a third preset time, obtaining the operating parameters of the compressor, and calculating the predicted maximum exhaust pressure of the current compressor according to the operating parameters; The 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. If so, the pressure is adjusted to the second control instruction; if so, the first control instruction is maintained.

3. A control method for air conditioning equipment according to claim 2, characterized in that: The method to obtain the predicted maximum exhaust pressure is: After waiting for a second preset time, obtaining the temperature of the compressor as the first temperature; After waiting for a third preset time, obtaining the temperature of the compressor as the second temperature; Acquire a temperature change rate of the compressor according to the first temperature, the second temperature and a third preset time; acquiring a humidity change rate in a compressor environment based on the temperature change rate; The predicted maximum exhaust pressure is obtained through the temperature change rate, humidity change rate and compressor operating parameters.

4. A control method for air conditioning equipment according to claim 3, characterized in that: The formula for obtaining the humidity change rate is as follows: Where D r is the temperature change rate, h is the humidity data in the weather data, A is the equivalent heat dissipation area of ​​the compressor surface, β is the influence coefficient of air convection in the environment on humidity, and ΔH is the change in the ambient humidity of the compressor between the end of the second preset time and the end of the third preset time; The steps to obtain the predicted maximum exhaust pressure are as follows: Get the ideal maximum discharge pressure of the compressor operating data; Acquire the ambient humidity of the compressor based on the humidity change rate, the humidity data in the weather data, and the running time, and determine the value of the first adjustment coefficient based on the ambient humidity of the compressor; Obtaining the intake air temperature of the compressor based on the temperature change rate, the initial gas temperature of the compressor, and the operating time; Correcting the intake air temperature of the compressor according to the ambient humidity of the compressor to obtain a corrected temperature, and determining the value of the second adjustment coefficient according to the corrected temperature; The predicted maximum exhaust pressure is obtained by multiplying 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: T=T+ω*H*(T-0)-τ*T*H; Where T is the intake temperature of the compressor, H is the ambient humidity of the compressor, ω and τ are adjustment parameters, and θ is a constant greater than zero.

5. A control system for air conditioning equipment, characterized in that: It includes a temperature difference acquisition module and a regulation module; The temperature difference adjustment module includes obtaining a user-specified temperature and an indoor temperature, and obtaining a first temperature difference according to the specified temperature and the indoor temperature; The regulating module is used to determine whether the first temperature difference is greater than a temperature threshold, and if so, send a first control instruction to the compressor; if so, send a second control instruction to the compressor.

6. A control system for air conditioning equipment according to claim 5, characterized in that: It also includes a security module; The security module is used to wait for a third preset time after executing the first control instruction, obtain the operating parameters of the compressor, and calculate the predicted maximum exhaust pressure of the current compressor according to the operating parameters; The 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. If so, the compressor is frequency-reduced and adjusted to the second control instruction. If so, the first control instruction is maintained.

7. A control system for air conditioning equipment according to claim 6, characterized in that: The security module includes a maximum exhaust pressure prediction submodule; The maximum exhaust pressure prediction submodule is used to obtain the temperature of the compressor as the first temperature after waiting for the second preset time; After waiting for a third preset time, obtaining the temperature of the compressor as the second temperature; Acquire a temperature change rate of the compressor according to the first temperature, the second temperature and a third preset time; acquiring a humidity change rate in a compressor environment based on the temperature change rate; The predicted maximum exhaust pressure is obtained through the temperature change rate, humidity change rate and compressor operating parameters.

8. An air conditioning device, characterized in that: The air conditioning equipment comprises a control system for air conditioning equipment as described in any one of claims 5 to 7.

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