Integrated control method and system of multi-connected air conditioner

Abstract

An integrated control method of a multi-connected air conditioner, comprising the following method: in a first period, statistics of all indoor units received control instructions, and according to the control instruction, the temperature change value of the region is accumulated, and the total value is obtained, wherein after the outdoor unit starts, the input time of the first control instruction is taken as the starting time of the first first period; according to the running parameter, the maximum exhaust gas pressure is corrected to obtain the corrected gas pressure, and the judgment through the corrected gas pressure will be more in line with the actual exhaust of the compressor, and the normal operation of the compressor is guaranteed. When the actual gas pressure is greater than the corrected gas pressure, the frequency of the compressor needs to be reduced to reduce the actual gas pressure, so that the actual gas pressure can meet the exhaust demand of the compressor, thereby solving the situation that the outdoor unit of the multi-connected air conditioner is dead due to exhaust pressure when temperature control is performed.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of air conditioner control, in particular to a multi-connected air conditioner integrated control method and system. BACKGROUND

[0002] Multi-connected air conditioner, also known as multi-connected air conditioner system, is an advanced central air conditioning system, which is composed of a single refrigeration cycle system connected with a plurality of different or same type and capacity direct evaporative indoor units by a wind-cooled outdoor unit. This system can directly provide processed air to one or several areas to achieve the purpose of delivering cold or hot air to each room.

[0003] In the multi-connected air conditioner, one outdoor unit needs to be responsible for the air conditioning output of multiple areas (multiple indoor units), and when the air conditioner is just started, multiple areas need to be rapidly cooled or rapidly heated. At this time, the power of the outdoor unit compressor needs to be adjusted. At this time, the compressor is in the stage of just starting, and the internal gas pressure is relatively poor in stability. If the power is increased to a large extent, the gas pressure in the compressor will be large, and when the gas pressure is greater than the maximum exhaust gas pressure, the gas in the compressor will not be able to be discharged, thereby causing damage to the compressor. Therefore, how to control the power of the multi-connected air conditioner has become a problem to be solved. SUMMARY

[0004] In view of the above defects, the purpose of the present application is to provide a multi-connected air conditioner integrated control method and system to solve the problem of difficult control of compressor frequency at the initial stage of multi-connected air conditioner start.

[0005] To achieve this purpose, the present application adopts the following technical scheme: a multi-connected air conditioner integrated control method, comprising the following method:

[0006] In the first period, the control instructions received by all indoor units are counted, and the temperature change value of the area where the indoor unit is located is accumulated according to the control instruction to obtain a total change value, wherein the temperature change value is obtained by obtaining the indoor temperature of the area where the indoor unit is located as the first temperature, obtaining the temperature to be adjusted by the control instruction as the second temperature, and taking the difference between the first temperature and the second temperature as the temperature change value, wherein the input time of the first control instruction after the outdoor unit starts is taken as the starting time of the first first period;

[0007] It is judged whether the total change value is greater than the temperature threshold value, if greater than the temperature threshold value, the running parameters of the compressor are obtained, the maximum exhaust gas pressure of the compressor is corrected according to the running parameters to obtain a corrected gas pressure;

[0008] The actual gas pressure in the compressor is obtained, and it is judged whether the actual gas pressure is greater than the corrected gas pressure, if greater, the frequency of the compressor is reduced, if not greater, the frequency of the compressor is maintained.

[0009] Preferably, the operating parameter comprises an initial temperature of the compressor, a temperature after the compressor is operated, and humidity in the weather environment;

[0010] The corrected air pressure is obtained in the following manner:

[0011] A temperature change rate of the compressor is obtained according to the initial temperature of the compressor, the temperature after the compressor is operated, and a second threshold time;

[0012] A humidity change rate in the environment of the compressor is obtained based on the temperature change rate;

[0013] A corrected air pressure is obtained by the temperature change rate, the humidity change rate, and the operating parameter of the compressor.

[0014] Preferably, the humidity change rate is obtained in the following formula:

[0015]

[0016] wherein D r is the temperature change rate, h is the humidity in the weather environment, A is the surface equivalent heat dissipation area of the compressor, β is the influence coefficient of air convection in the environment on the humidity, and ΔHH is the change amount of the humidity in the environment where the compressor is located within the second threshold time.

[0017] Preferably, the corrected air pressure is obtained in the following manner:

[0018] An environmental humidity of the compressor is obtained based on the humidity change rate, the humidity in the weather environment, and the second threshold time, and a value of a first adjustment coefficient is determined based on the environmental humidity of the compressor;

[0019] An intake air temperature of the compressor is obtained based on the temperature change rate, an initial gas temperature of the compressor, and an operating time length;

[0020] The intake air temperature of the compressor is corrected according to the environmental humidity of the compressor to obtain a corrected temperature, and a value of a second adjustment coefficient is determined according to the corrected temperature;

[0021] wherein the corrected temperature is obtained in the following formula:

[0022] T i = T + ω*H*(T-θ)-τ*T*H;

[0023] wherein T is the intake air temperature of the compressor, H is the environmental humidity of the compressor, ω and τ are adjustment parameters, and θ is a constant greater than zero;

[0024] The corrected air pressure is obtained by correcting the maximum exhaust air pressure by the first adjustment coefficient and the second adjustment coefficient.

[0025] Preferably, the step of reducing the frequency of the compressor is as follows:

[0026] Setting an adjustment threshold value;

[0027] Ranking the temperature change values of the areas where the indoor units are located in size;

[0028] Accumulating the temperature change values from small to large until the sum of the temperature change values is greater than or equal to the adjustment threshold value, and marking the accumulated areas where the indoor units are located as the first area;

[0029] Taking half of the temperature change value in the first area plus the indoor temperature as the temporary temperature, and replacing the user-specified temperature with the temporary temperature;

[0030] After the third threshold time, replacing the temporary temperature with the user-specified temperature;

[0031] Wherein the duration of the second threshold time plus the duration of the third threshold time is equal to the duration of the first period.

[0032] Preferably, the method further comprises the following steps:

[0033] Setting the number of cycles of the first period;

[0034] In the non-first period adjustment, obtaining the temperature change remaining amount of the previous first period;

[0035] Accumulating the temperature change remaining amount with the temperature change value of the area where the control instruction is located in the current first period to obtain the total change value;

[0036] Wherein the temperature change remaining amount is the difference between the first temperature and the second temperature of the area where the control instruction is located in the previous first period after the end of the first period.

[0037] An integrated control system of a multi-connected air conditioner, using the integrated control method of the multi-connected air conditioner, comprising: a change amount acquisition module, a correction module, and a processing module;

[0038] The change amount acquisition module is used to, in a first period, count the temperature change values of all areas where indoor units are located to obtain a total change value;

[0039] The correction module is used to determine whether the total change value is greater than a temperature threshold value, and if it is greater than the temperature threshold value, to obtain the operating parameters of the compressor, correct the maximum exhaust gas pressure of the compressor according to the operating parameters, and obtain a corrected gas pressure;

[0040] The processing module is used to obtain the actual gas pressure in the compressor, determine whether the actual gas pressure is greater than the corrected gas pressure, and if it is greater, reduce the frequency of the compressor, and if it is less, maintain the frequency of the compressor.

[0041] Preferably, the correction module comprises a gas correction sub-module;

[0042] The gas correction sub-module is configured to obtain a temperature change rate of the compressor according to an initial temperature of the compressor, a temperature of the compressor after operation, and a second threshold time;

[0043] The temperature change rate is used to obtain a humidity change rate in an environment of the compressor;

[0044] A corrected gas pressure is obtained by the temperature change rate, the humidity change rate, and an operation parameter of the compressor.

[0045] Preferably, the gas correction sub-module comprises a first coefficient obtaining unit, a second coefficient obtaining unit, and an adjusting unit;

[0046] The first coefficient obtaining unit is configured to obtain an environmental humidity of the compressor based on the humidity change rate, a humidity in a weather environment, and a second threshold time, and determine a value of a first adjustment coefficient based on the environmental humidity of the compressor;

[0047] The second coefficient obtaining unit is configured to obtain an intake gas temperature of the compressor based on the temperature change rate, an initial gas temperature of the compressor, and a running time length;

[0048] The intake gas temperature of the compressor is corrected according to the environmental humidity of the compressor to obtain a corrected temperature, and a value of a second adjustment coefficient is determined according to the corrected temperature;

[0049] The adjusting unit is configured to correct the maximum exhaust gas pressure by multiplying the maximum exhaust gas pressure by the first adjustment coefficient and the second adjustment coefficient to obtain the corrected gas pressure.

[0050] Preferably, the processing module comprises a frequency reduction sub-module;

[0051] The frequency reduction sub-module is configured to set an adjustment threshold;

[0052] Temperature change values of areas where indoor units are located are sorted in size;

[0053] The temperature change values are accumulated from small to large until a total of the temperature change values is greater than or equal to the adjustment threshold, and the accumulated areas where the indoor units are located are marked as a first area;

[0054] Half of the temperature change values in the first area plus an indoor temperature is taken as a temporary temperature, and the temporary temperature is used to replace the user-specified temperature;

[0055] After a third threshold time, the temporary temperature is replaced by the user-specified temperature;

[0056] The length of the second threshold time plus the length of the third threshold time is equal to the length of the first period. One of the above technical solutions has the following advantages or beneficial effects: when the total value of the change is greater than the temperature threshold, it indicates that the compressor opportunity needs to work at a high frequency, at which time the exhaust pressure of the compressor will become larger, and when the actual air pressure is greater than the maximum exhaust air pressure, the compressor will have difficulty in exhaust, thereby causing the compressor to stop. The maximum exhaust air pressure is usually detected by the manufacturer in a standard environment. However, the actual application scenario is different from the scenario at the time of detection, and is affected by the humidity and temperature of the weather and the aging of the equipment. If the maximum exhaust air pressure given by the manufacturer is directly used for control, it may cause damage to the equipment. Therefore, in the present application, the maximum exhaust air pressure is corrected according to the operating parameters to obtain a corrected air pressure, and the judgment by the corrected air pressure is more in line with the actual exhaust of the compressor, thereby ensuring the normal operation of the compressor. When the actual air pressure is greater than the corrected air pressure, the frequency of the compressor needs to be reduced to reduce the actual air pressure, so that the actual air pressure can meet the exhaust demand of the compressor, thereby solving the problem of air conditioner outdoor unit shutdown caused by exhaust pressure when the temperature of the multi-connected air conditioner is controlled. BRIEF DESCRIPTION OF DRAWINGS

[0057] Fig. 1 is a flow chart of an embodiment of the method of the present application.

[0058] Fig. 2 is a structural schematic diagram of an embodiment of the system of the present application. DETAILED DESCRIPTION

[0059] Embodiments of the present application are described in detail below, examples of which 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 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 a limitation of the present application.

[0060] In the description of the embodiments of the present application, the terms "first", "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of 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 "a plurality of" is two or more, unless otherwise specifically limited.

[0061] In addition, the terms "first", "second", "third", etc. are used only for descriptive purposes and do not connote or imply relative importance or a quantity of the indicated technical features. Thus, features with "first", "second", "third" designations can include one or more of the features explicitly or implicitly. In the description of the present application, the meaning of "a plurality" is two or more, unless otherwise specified. The specific meaning 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.

[0062] As shown in Figs. 1-2 An integrated control method of a multi-connected air conditioner, comprising the following methods:

[0063] In the first period, the control instructions received by all indoor units are counted, and the temperature change value of the area where the indoor unit is located is accumulated according to the control instruction to obtain a total change value, wherein the temperature change value is obtained by obtaining the indoor temperature of the area where the indoor unit is located as the first temperature, obtaining the temperature to be adjusted by the control instruction as the second temperature, and taking the difference between the first temperature and the second temperature as the temperature change value, wherein the input time of the first control instruction after the outdoor unit starts is taken as the start time of the first first period;

[0064] It is judged whether the total change value is greater than the temperature threshold value, and if it is greater than the temperature threshold value, the operating parameters of the compressor are obtained, the maximum exhaust gas pressure of the compressor is corrected according to the operating parameters to obtain a corrected gas pressure;

[0065] The actual gas pressure in the compressor is obtained, and it is judged whether the actual gas pressure is greater than the corrected gas pressure, and if it is greater than the corrected gas pressure, the frequency of the compressor is reduced, and if it is not greater than the corrected gas pressure, the frequency of the compressor is maintained.

[0066] In one embodiment, assuming there are four indoor units A, B, C and D in the area, the first control instruction is issued at 10:10 in A area, the second control instruction is issued at 10:12 in B area, and the third control instruction is issued at 10:16 in C area.

[0067] And the first period is 5 minutes. At this time, the temperature change value of all indoor units in the area at 10:15 is obtained. At this time, the temperature change value of A area and B area is counted to obtain a total change value, and the temperature change value of C area is obtained in the next statistical operation. Specifically, if the indoor temperature of A indoor unit area is 39℃, and the first control instruction is to adjust the temperature to 26℃, then the temperature change value of A area at this time is 39℃-26℃=13℃. Similarly, if the indoor temperature of B indoor unit area is 37℃, and the first control instruction is to adjust the temperature to 27℃, then the temperature change value of A area at this time is 10℃. Finally, the temperature change values of A area and B area are added to obtain a total change value of 23℃.

[0068] When the total value of the change is greater than the temperature threshold value, it indicates that the compressor needs to work at a high frequency, and the pressure of the exhaust gas of the compressor will increase. When the actual air pressure is greater than the maximum exhaust gas pressure, the compressor will have difficulty in exhaust, thereby causing the compressor to stop. The maximum exhaust gas pressure is usually detected by the manufacturer in a standard environment. However, the actual application scenario is different from the detection scenario, and is affected by the humidity and temperature of the weather and the aging of the equipment. If the maximum exhaust gas pressure given by the manufacturer is directly used for control, it may cause damage to the equipment. Therefore, in the present application, the maximum exhaust gas pressure is corrected according to the operating parameters to obtain a corrected air pressure. The judgment by the corrected air pressure is more in line with the actual exhaust of the compressor, and ensures the normal operation of the compressor. When the actual air pressure is greater than the corrected air pressure, the frequency of the compressor needs to be reduced to reduce the actual air pressure, so that the actual air pressure can meet the exhaust demand of the compressor, thereby solving the problem of air conditioner outdoor unit shutdown caused by exhaust pressure when the temperature of the multi-connected air conditioner is controlled.

[0069] Preferably, the operating parameters include the initial temperature of the compressor, the temperature after the compressor runs, and the humidity in the weather environment.

[0070] The method for obtaining the corrected air pressure is as follows:

[0071] According to the initial temperature of the compressor, the temperature after the compressor runs, and the second threshold time, the temperature change rate of the compressor is obtained.

[0072] The initial temperature of the compressor is the temperature obtained at the beginning of the first period, and the temperature after the compressor runs is the temperature at the second threshold time after the first period starts. The specific temperature change rate is obtained by subtracting the initial temperature of the compressor from the temperature after the compressor runs, and then dividing by the second threshold time, i.e. the temperature change rate.

[0073] Based on the temperature change rate, the humidity change rate in the compressor environment is obtained.

[0074] The corrected air pressure is obtained by the temperature change rate, the humidity change rate, and the operating parameters of the compressor.

[0075] In addition to temperature, humidity is another factor affecting exhaust gas pressure. Generally, the compressor of an air conditioner is placed outdoors, and the compressor is greatly affected by the humidity of the external environment. At the same time, the change of temperature also affects the humidity. Therefore, the humidity change rate cannot be obtained in the same linear way 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. The accuracy of the calculation is improved.

[0076] The technical scheme indirectly obtains the humidity change rate in the environment by monitoring the temperature change rate of the compressor in real time, and further predicts the maximum exhaust gas pressure of the compressor, having 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.

[0077] It is worth mentioning that the length of the second threshold time is less than the first period, generally 1-2 minutes. At this time, the air conditioner outdoor unit tends to be stable, and the data obtained at this time is more accurate.

[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 in the weather environment, A is the surface equivalent heat dissipation area of the compressor, β is the influence coefficient of air convection on humidity in the environment, and ΔH is the change amount of humidity in the environment where the compressor is located within the second threshold time.

[0081] The humidity in the weather environment can be obtained through meteorological data, and the humidity data displayed in the meteorological data is the humidity in the weather environment. ΔH is calculated based on the humidity data obtained by the sensor. The humidity transmitted by the sensor is obtained at the start time of the second threshold time, and then the humidity transmitted by the sensor at the end time of the second threshold time is obtained. The two humidity data are subtracted to obtain the ΔH.

[0082] Preferably, the step of obtaining the corrected air pressure is as follows:

[0083] Based on the humidity change rate, the humidity in the weather environment, and the second threshold time, the environmental humidity of the compressor is obtained, and the value of the first adjustment coefficient is determined based on the environmental humidity of the compressor.

[0084] The environmental humidity of the compressor can be calculated based on the humidity in the weather environment, the humidity change rate, and the running time. For example, the humidity in the weather environment is 70%, the humidity change rate is 0.25% / s, and the running time is 2 minutes.

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

[0086] acquiring the intake temperature of the compressor based on the temperature change rate, the initial gas temperature of the compressor and the running time length;

[0087] correcting the intake 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 formula for obtaining the corrected temperature is as follows:

[0089] T i = T + ω*H*(T-θ)-τ*T*H;

[0090] wherein T is the intake temperature of the compressor, H is the ambient humidity of the compressor, ω and τ are adjustment parameters respectively, and θ is a constant greater than zero;

[0091] The initial gas temperature of the compressor is the temperature when no control instruction is received, and then the intake temperature of the compressor can be obtained through the temperature change rate and the running time length. 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.

[0092] At this time, the intake temperature of the compressor is (10°C + 0.5°C / s*120)*0.5 = 35°C. The value of 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 cause of the change of the external temperature is 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.

[0093] The interval of the corrected temperature of each compressor corresponds to a value of the second adjustment coefficient. For example, when the temperature is 10°C-13°C, the value of the second adjustment coefficient is B1, when the temperature is 13°C-16°C, the value of the second adjustment coefficient is B2, and so on.

[0094] The corrected gas pressure is obtained by multiplying the maximum exhaust gas pressure by the first adjustment coefficient and the second adjustment coefficient.

[0095] Preferably, the step of reducing the frequency of the compressor is as follows:

[0096] setting an adjustment threshold;

[0097] sorting the temperature change values of the areas where the indoor units are located in size;

[0098] adding the temperature change values from small to large until the sum of the temperature change values is greater than or equal to the adjustment threshold, and marking the added areas where the indoor units are located as the first area;

[0099] temporarily replace the user specified temperature with a temperature change value of the first region by half plus the indoor temperature, as the temporary temperature, with the temporary temperature instead of the user specified temperature;

[0100] temporarily replace the user specified temperature with a temperature change value of the first region by half plus the indoor temperature, as the temporary temperature, with the temporary temperature instead of the user specified temperature;

[0101] wherein the length of the second threshold time plus the length of the third threshold time is equal to the length of the first period.

[0102] The adjustment threshold is a temperature value given by experience. In an embodiment, the adjustment threshold is 10℃. The temperature change value of the region where the indoor unit is located is as follows: A zone 12℃, B zone 10℃, C zone 8℃, D zone 5℃. At this time, the temperature change value of D zone+C zone is greater than 10℃, at this time D zone+C zone is marked as the first region, if the indoor temperature of D zone and C zone is 36℃ and 38℃ respectively, at this time the temporary temperature of D zone is 36-5 / 2=33.5℃, and the temporary temperature of C zone is 38-8 / 2=34℃. Since the user specified temperature is replaced by the temporary temperature, and the temporary temperature is relatively small compared to the specified temperature, at this time the frequency of the compressor can be reduced. Moreover, the adjustment is from the direction of the smaller temperature change value, which means that the indoor temperature and the user specified temperature are relatively small, and the user's experience of temperature adjustment will not be so strong. At this time, the experience of people in the region (A zone and B zone) that needs to be quickly adjusted can be taken into account.

[0103] At the same time, the length of the second threshold time plus the length of the third threshold time is equal to the length of the first period. After the third threshold time, the next statistical work is entered, and the temporary temperature is replaced by the user specified temperature to generate a new temperature change instruction, i.e. a new control instruction, at this time the temperature change of the first region can be monitored.

[0104] Preferably, the method further comprises the following steps:

[0105] setting the number of cycles of the first period;

[0106] in the non-first period adjustment, obtaining the temperature change remaining amount of the previous first period;

[0107] adding the temperature change remaining amount and the temperature change value of the region where the control instruction is located in the current first period to obtain the total change value;

[0108] wherein the temperature change remaining amount is the difference between the first temperature and the second temperature of the region where the control instruction is located in the previous first period after the end of the first period.

[0109] Since the compressor tends to be stable after working, any temperature control instruction is acceptable in the stable state. Therefore, the number of cycles of the first period is also required to be set in the application. When the number of cycles meets the requirements, the compressor tends to be stable, and no further control is performed at this time to reduce the consumption of control computing power.

[0110] Since the temperature change value of the partial area may be large during the adjustment of the previous first period, the indoor temperature of the area may not be adjusted to the user-specified temperature through one first period. Therefore, when adjusting in the next first period, the temperature change remaining amount of the previous first period needs to be considered. For example, the control instruction of area A is to adjust the temperature to 26℃, and after the adjustment of the first period, the indoor temperature of area A decreases from 39℃ to 30℃, and the temperature change remaining amount of area A is 30℃-26℃=4℃. Then, the temperature change remaining amount and the temperature change value of the area where the control instruction is located in the current first period are added to obtain the total change value.

[0111] An integrated control system of a multi-connected air conditioner, using an integrated control method of the multi-connected air conditioner, comprising: a change amount acquisition module, a correction module, and a processing module;

[0112] The change amount acquisition module is used to, in the first period, count the temperature change values of all areas where the indoor units are located to obtain a total change value;

[0113] The correction module is used to judge whether the total change value is greater than a temperature threshold value. If it is greater than the temperature threshold value, the operating parameters of the compressor are obtained, the maximum exhaust gas pressure of the compressor is corrected according to the operating parameters to obtain a corrected gas pressure;

[0114] The processing module is used to obtain the actual gas pressure in the compressor, judge whether the actual gas pressure is greater than the corrected gas pressure, and if it is greater, reduce the frequency of the compressor, and if it is less, keep the frequency of the compressor.

[0115] Preferably, the correction module comprises a gas correction submodule;

[0116] The gas correction submodule is used to obtain the temperature change rate of the compressor according to the initial temperature of the compressor, the temperature after the compressor operates, and a second threshold time;

[0117] Based on the temperature change rate, the humidity change rate in the environment of the compressor is obtained;

[0118] The corrected gas pressure is obtained through the temperature change rate, the humidity change rate, and the operating parameters of the compressor.

[0119] Preferably, the gas correction submodule comprises a first coefficient acquisition unit, a second coefficient acquisition unit, and an adjustment unit;

[0120] The first coefficient obtaining unit is configured to obtain an ambient humidity of the compressor based on the humidity change rate, a humidity in a weather environment, and a second threshold time, and determine a value of the first adjustment coefficient based on the ambient humidity of the compressor;

[0121] The second coefficient obtaining unit is configured to obtain an intake temperature of the compressor based on the temperature change rate, an initial gas temperature of the compressor, and a running time length;

[0122] The intake temperature of the compressor is corrected based on the ambient humidity of the compressor to obtain a corrected temperature, and a value of the second adjustment coefficient is determined based on the corrected temperature;

[0123] The adjustment unit is configured to correct the maximum exhaust gas pressure by multiplying the maximum exhaust gas pressure by the first adjustment coefficient and the second adjustment coefficient to obtain a corrected gas pressure.

[0124] Preferably, the processing module comprises a frequency reduction submodule.

[0125] The frequency reduction submodule is configured to set an adjustment threshold.

[0126] The temperature change values of the areas where the indoor units are located are sorted in size;

[0127] The temperature change values are accumulated from small to large until the sum of the temperature change values is greater than or equal to the adjustment threshold, and the accumulated area where the indoor unit is located is marked as a first area;

[0128] Half of the temperature change value in the first area is added to the indoor temperature to obtain a temporary temperature, and the temporary temperature is used to replace the user-specified temperature;

[0129] After the third threshold time, the temporary temperature is replaced by the user-specified temperature;

[0130] The length of the second threshold time plus the length of the third threshold time is equal to the length of the first period.

[0131] In the description of the present specification, the description of the terms "one embodiment", "some embodiments", "exemplary embodiment", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the exemplary description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0132] While embodiments of the application have been shown and described, it is to be understood that the embodiments described are merely exemplary of the principles and application of the present application. Numerous modifications and changes can be made by those skilled in the art without departing from the spirit and scope of the application. The scope of the application is not to be limited by the embodiments shown and described, but only by the claims and their equivalents.

Claims

1. A method of integrated control of a multi-connected air conditioner, characterized by, The method comprises the following steps: In the first cycle, all the control instructions received by the indoor unit are counted, and the temperature change value of the area where the indoor unit is located is accumulated according to the control instructions to obtain a total change value, wherein the temperature change value is obtained by taking the indoor temperature of the area where the indoor unit is located as a first temperature, taking the temperature to be adjusted by the control instruction as a second temperature, and taking the difference between the first temperature and the second temperature as the temperature change value, wherein the input time of the first control instruction after the outdoor unit is started is taken as the starting time of the first first cycle; It is judged whether the total change value is greater than a temperature threshold value, if it is greater than the temperature threshold value, the operating parameters of the compressor are obtained, and the maximum exhaust gas pressure of the compressor is corrected according to the operating parameters to obtain a corrected gas pressure; The actual gas pressure in the compressor is obtained, and it is judged whether the actual gas pressure is greater than the corrected gas pressure, if it is greater, the frequency of the compressor is reduced, and if it is not greater, the frequency of the compressor is maintained; The operating parameters include the initial temperature of the compressor, the temperature after the compressor operates, and the humidity in the weather environment; The corrected gas pressure is obtained in the following way: The temperature change rate of the compressor is obtained according to the initial temperature of the compressor, the temperature after the compressor operates, and a second threshold time; The humidity change rate in the environment of the compressor is obtained based on the temperature change rate; The corrected gas pressure is obtained by the temperature change rate, the humidity change rate, and the operating parameters of the compressor. 2.The integrated control method of a multi-connected air conditioner 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 in the weather environment, A is a surface equivalent heat dissipation area of the compressor, is a humidity influence coefficient of air convection in the environment, is a change amount of humidity in the environment in which the compressor is located within the second threshold time. 3.The integrated control method of a multi-connected air conditioner according to claim 2, wherein, The corrected gas pressure is obtained in the following way: The environmental humidity of the compressor is obtained based on the humidity change rate, the humidity in the weather environment, and a second threshold time, and the value of the first adjustment coefficient is determined based on the environmental humidity of the compressor; The inlet gas temperature of the compressor is obtained based on the temperature change rate, the initial gas temperature of the compressor, and the operating time; The inlet gas temperature of the compressor is corrected according to the environmental humidity of the compressor to obtain a corrected temperature, and the value of the second adjustment coefficient is determined according to the corrected temperature; 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; The corrected gas pressure is obtained by correcting the maximum exhaust gas pressure by the first adjustment coefficient and the second adjustment coefficient. 4.The integrated control method of a multi-connected air conditioner according to claim 3, wherein, The frequency of the compressor is reduced in the following way: An adjustment threshold value is set; The temperature change values of the areas where the indoor units are located are sorted in size; The temperature change values are accumulated from small to large until the total sum of the temperature change values is greater than or equal to the adjustment threshold value, and the accumulated areas where the indoor units are located are marked as the first area; Half of the temperature change value in the first area plus the indoor temperature is taken as a temporary temperature, and the temporary temperature is used instead of the user-specified temperature; After a third threshold time, the temporary temperature is replaced by the user-specified temperature; The duration of the second threshold time plus the duration of the third threshold time is equal to the duration of the first cycle. 5.The integrated control method of a multi-connected air conditioner according to claim 4, wherein, It further comprises the following steps: The number of cycles of the first cycle is set; In the non-first cycle adjustment, the temperature change remaining amount of the previous first cycle is obtained; The temperature change remaining amount and the temperature change value of the area where the control instruction is located in the current first cycle are accumulated to obtain a total change value; The temperature change residual amount is a difference between a first temperature and a second temperature of a region where a control instruction of a previous first period is located after the first period ends.

6. An integrated control system of a multi-connected air conditioner using the integrated control method of any one of claims 1 to 5. The method comprises: The method comprises: The change amount obtaining module is configured to obtain a total change value by counting temperature change values of all regions where indoor units are located in a first period. The correction module is configured to determine whether the total change value is greater than a temperature threshold value, and if so, obtain an operating parameter of the compressor, correct a maximum exhaust gas pressure of the compressor according to the operating parameter, and obtain a corrected gas pressure. The processing module is configured to obtain an actual gas pressure in the compressor, determine whether the actual gas pressure is greater than the corrected gas pressure, and if so, reduce a frequency of the compressor, and if not, maintain the frequency of the compressor.

7. The integrated control system of a multi-connected air conditioner according to claim 6, wherein The correction module comprises a gas correction submodule. The gas correction submodule is configured to obtain a temperature change rate of the compressor according to an initial temperature of the compressor, a temperature of the compressor after operation, and a second threshold time. The gas correction submodule is configured to obtain a humidity change rate in an environment of the compressor based on the temperature change rate. The gas correction submodule is configured to obtain the corrected gas pressure by the temperature change rate, the humidity change rate, and the operating parameter of the compressor.

8. The integrated control system of a multi-connected air conditioner according to claim 7, wherein The gas correction submodule comprises a first coefficient obtaining unit, a second coefficient obtaining unit, and an adjustment unit. The first coefficient obtaining unit is configured to obtain an environmental humidity of the compressor based on the humidity change rate, a humidity in a weather environment, and the second threshold time, and determine a value of a first adjustment coefficient based on the environmental humidity of the compressor. The second coefficient obtaining unit is configured to obtain an intake gas temperature of the compressor based on the temperature change rate, an initial gas temperature of the compressor, and a running time length. The second coefficient obtaining unit is configured to correct the intake gas temperature of the compressor according to the environmental humidity of the compressor to obtain a corrected temperature, and determine a value of a second adjustment coefficient based on the corrected temperature. The adjustment unit is configured to correct the maximum exhaust gas pressure by multiplying the maximum exhaust gas pressure by the first adjustment coefficient and the second adjustment coefficient to obtain the corrected gas pressure. 9.The integrated control system of a multi-connected air conditioner according to claim 8, wherein, The processing module comprises a frequency reduction submodule. The frequency reduction submodule is configured to set an adjustment threshold value. The frequency reduction submodule is configured to sort the temperature change values of the regions where the indoor units are located in size. The frequency reduction submodule is configured to accumulate the temperature change values from small to large until a total sum of the temperature change values is greater than or equal to the adjustment threshold value, mark the accumulated regions where the indoor units are located as a first region, and set a temperature change value in the first region as a temporary temperature. The frequency reduction submodule is configured to replace the user-specified temperature with the temporary temperature after a third threshold time. The second threshold time and the third threshold time are equal to the first period. ​

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