Air conditioning compressor starting method, system and terminal

Abstract

The present invention provides an air-conditioning compressor starting method, system and terminal, comprising the following steps: performing a power-on operation on the air-conditioning compressor; determining whether the power-on operation is the first power-on operation; if so, starting the air-conditioning compressor using a first starting sequence; otherwise starting the air-conditioning compressor using a second starting sequence. The air-conditioning compressor starting method, system and terminal of the present invention achieve balanced wear of multiple compressors in an outdoor water cooling unit, effectively extending the service life of the VRF air-conditioning system; can reasonably configure the number of compressors according to the air-conditioning compressor capacity requirements required by the user, and has a significant energy-saving effect; the implementation method is simple, the operating cost is low, and the energy loss caused by frequent start and stop of the compressor is effectively reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of air-conditioning compressors, and in particular to an air-conditioning compressor starting method, system and terminal. Background Art

[0002] Variable Refrigerant Flow (VRF) is an air conditioning system whose structure includes an outdoor water-cooled unit and multiple indoor units connected to the outdoor water-cooled unit. Large VRF systems contain multiple outdoor water-cooled units, each of which uses a digital scroll compressor or a variable frequency compressor. In a digital scroll compressor, the motor runs continuously at full speed, and the capacity of the compressor is adjusted by a numerically controlled mechanical unloader (slide), which can adjust the vertical position of the fixed scroll relative to the orbiting scroll, thereby reducing its capacity. In the variable frequency compressor, the VRF air conditioning system uses a variable frequency control method to control the speed of the compressor in the outdoor water-cooled unit according to the number of indoor units turned on, thereby controlling the refrigerant flow rate. Refrigerant is usually used as a cooling or heating medium, and its flow rate will change according to the changes in cooling or heating requirements in the air-conditioned area.

[0003] To ensure the stability of the entire air conditioning system, each time the VRF air conditioning system is started, the outdoor water cooling unit and each compressor inside it are not turned on at the same time, but are turned on one by one at a certain interval. At this time, if each outdoor water cooling unit and each compressor inside it are turned on in a fixed order for a long time, it is bound to cause different degrees of wear on different outdoor water cooling units and different compressors. In addition, if the system capacity requirement does not reach the maximum value, not all compressors will be turned on, and the difference in the degree of wear of different compressors will be further increased, which will indirectly affect the service life of the whole machine. Summary of the invention

[0004] In view of the above-mentioned shortcomings of the prior art, the purpose of the present invention is to provide an air-conditioning compressor starting method, system and terminal, which are used to solve the technical problem that the wear degree of different compressors in the outdoor water cooling unit in the prior art is different. Compared with the existing air-conditioning compressor starting method, the present invention realizes the balanced wear of multiple compressors in the outdoor water cooling unit, effectively extending the service life of the VRF air-conditioning system.

[0005] To achieve the above-mentioned object and other related objects, the present invention provides an air-conditioning compressor starting method, comprising the following steps: performing a power-on operation on the air-conditioning compressor; determining whether the power-on operation is the first power-on operation; if so, starting the air-conditioning compressor using a first starting sequence; otherwise, starting the air-conditioning compressor using a second starting sequence.

[0006] Preferably, before the air-conditioning compressor is powered on, the following steps are also included:

[0007] Obtain the air conditioning compressor capacity requirements required by users;

[0008] Determining the total number N of outdoor water cooling units and the total number n of air conditioning compressors based on the air conditioning compressor capacity requirements;

[0009] A power-on operation is performed on the N outdoor water cooling units and the n air-conditioning compressors.

[0010] Preferably, the outdoor water cooling unit includes a host unit and at least one slave unit; each of the host unit and the slave unit includes a first compressor and a second compressor.

[0011] Preferably, performing a power-on operation on the air-conditioning compressor includes the following steps:

[0012] Turn on the host unit to obtain a start control signal;

[0013] A startup sequence of the slave units is controlled based on the startup control signal.

[0014] Preferably, starting the air conditioning compressor using the first starting sequence comprises the following steps:

[0015] Get the number x of air conditioning compressors that have been started;

[0016] Determine whether the number x of the started air-conditioning compressors is greater than or equal to 1 and less than the total number N of the outdoor water cooling units;

[0017] If yes, start the first compressor in the (x+1)th unit; otherwise, determine whether the number x of the air-conditioning compressors that have been started is less than the total number n of the air-conditioning compressors;

[0018] If so, the second compressor in the (x+1-N)th unit is started.

[0019] Preferably, starting the compressor using the second starting sequence comprises the following steps:

[0020] Get the number x of air conditioning compressors that have been started;

[0021] Determine whether the number x of the started air-conditioning compressors is greater than or equal to 1 and less than the total number N of the outdoor water cooling units;

[0022] If yes, start the first compressor in the (N-x+1)th unit; otherwise, determine whether the number x of the air-conditioning compressors that have been started is less than the total number n of the air-conditioning compressors;

[0023] If so, the second compressor in the (nx)th unit is started.

[0024] Preferably, the method further includes starting the air-conditioning compressor alternately in a first starting sequence and a second starting sequence based on the starting control signal each time the air-conditioning compressor is shut down and restarted.

[0025] Preferably, the method further comprises the following steps:

[0026] Each time the power is turned off and then on again, the slave address of the current slave unit is obtained;

[0027] cyclically changing the slave address according to a preset rule based on the start control signal to obtain a changed slave address;

[0028] The air conditioner compressor in the slave unit is started based on the changed slave address.

[0029] The present invention provides an air-conditioning compressor starting system, the air-conditioning compressor starting system comprises a power-on module, a judgment module and a starting module;

[0030] The power-on module is used to perform a power-on operation on the air-conditioning compressor;

[0031] The judging module is connected to the power-on module and is used to judge whether the power-on operation is an initial power-on operation;

[0032] The starting module is connected to the judging module, and when the power-on operation is the first power-on operation, the air-conditioning compressor is started using a first starting sequence; otherwise, the air-conditioning compressor is started using a second starting sequence.

[0033] The present invention provides an air-conditioning compressor starting terminal, comprising: a processor and a memory;

[0034] The memory is used to store computer programs;

[0035] The processor is used to execute the computer program stored in the memory so that the terminal executes the air-conditioning compressor starting method according to any one of claims 1 to 8.

[0036] As described above, the air-conditioning compressor starting method, system and terminal provided by the present invention have the following beneficial effects:

[0037] (1) It achieves balanced wear of multiple compressors in the outdoor water cooling unit, effectively extending the service life of the VRF air conditioning system;

[0038] (2) The number of compressors can be reasonably configured according to the air-conditioning compressor capacity required by the user, which has a significant energy-saving effect;

[0039] (3) The implementation method is simple, the operating cost is low, and the energy loss caused by frequent start and stop of the compressor is effectively reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] Figure 1 Shown is a flow chart of an air-conditioning compressor starting method in one embodiment of the present invention.

[0041] Figure 2 It is a schematic diagram showing a first starting sequence of an air-conditioning compressor starting method in one embodiment of the present invention.

[0042] Figure 3 It is a schematic diagram showing a second starting sequence of the air-conditioning compressor starting method in one embodiment of the present invention.

[0043] Figure 4 The diagram shows a schematic diagram of a cyclic start-up sequence when the air-conditioning compressor is shut down and then restarted in one embodiment of the air-conditioning compressor start-up method of the present invention.

[0044] Figure 5 The diagram shows a cyclic start sequence diagram of the air-conditioning compressor start-up method in one embodiment of the present invention when the compressor is shut down and restarted again.

[0045] Figure 6 Shown is a schematic structural diagram of an air-conditioning compressor starting system in one embodiment of the present invention.

[0046] Figure 7 Shown is a schematic structural diagram of an air-conditioning compressor starting terminal in one embodiment of the present invention.

[0047] Component number description

[0048] S1~S3 Air Conditioning Compressor Startup Method and Steps

[0049] 61 Power on module

[0050] 62 Judgment module

[0051] 63 Startup Module

[0052] 71 Processor

[0053] 72 Memory DETAILED DESCRIPTION

[0054] The following describes the embodiments of the present invention through specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present invention.

[0055] In addition, the descriptions of "first", "second", etc. involved in the invention are only used for descriptive purposes and cannot be understood as indicating or implying their 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 at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0056] like Figure 1 As shown, in one embodiment, a method for starting an air conditioner compressor of the present invention comprises the following steps:

[0057] Step S1, powering on the air-conditioning compressor.

[0058] In one embodiment, before the air-conditioning compressor is powered on, the following steps are also included:

[0059] (1) Obtain the air conditioning compressor capacity requirements required by the user.

[0060] Specifically, obtaining the air-conditioning compressor capacity required by the user includes the following steps:

[0061] Obtain the current ambient temperature; obtain the ambient temperature set by the user; calculate the temperature difference between the current ambient temperature and the ambient temperature set by the user; calculate the power requirement of the air-conditioning compressor based on the temperature difference, and use the power requirement of the air-conditioning compressor as the air-conditioning compressor capacity requirement.

[0062] For example, the current indoor temperature in a workshop is 35°C. If the user expects to reduce the indoor temperature to 26°C, the temperature difference between the current indoor temperature and the indoor temperature set by the user is 9°C. According to the conversion formula of the preset temperature and the compressor power, it can be known that if the air-conditioning compressor wants to achieve a temperature change of 9°C, it will consume about 4000 watts (W). Here, 4000W is the air-conditioning compressor capacity required by the user. Generally, the greater the temperature difference, the greater the power consumed by the air-conditioning compressor, and accordingly, the higher the user's demand for the capacity of the air-conditioning compressor.

[0063] (2) Determine the total number N of outdoor water cooling units and the total number n of air conditioning compressors based on the air conditioning compressor capacity requirements.

[0064] In one embodiment, the outdoor water cooling unit includes a host unit and at least one slave unit; each of the host unit and the slave unit includes a first compressor and a second compressor. For example, when the outdoor water cooling unit assembly includes 1 host unit and 7 slave units, the outdoor water cooling unit assembly includes a total of 16 compressors. In one embodiment, the present invention sets the first compressor in the host unit as a variable frequency compressor and the second compressor as a fixed frequency compressor; at the same time, the first compressor and the second compressor in the slave unit are both set as fixed frequency compressors.

[0065] The variable frequency compressor is a compressor with adjustable speed. The speed of the compressor is adjusted by detecting the weight of the compressor load, the number of indoor units, and the changes in the ambient temperature. When the compressor load is heavy, or the number of indoor units is large, or the current temperature is far from the set target temperature, the compressor speed becomes faster, thereby increasing the cooling and heat output of the compressor; when the indoor units are less turned on, or the compressor load is light, or the current temperature is close to the set target temperature, the compressor speed becomes slower, thereby reducing the cooling and heat output of the compressor; this achieves the purpose of energy regulation. In addition to achieving a wide range of energy regulation, the variable frequency compressor also has the characteristics of low voltage starting, energy saving, and good defrosting performance.

[0066] Traditional fixed-frequency compressors mainly use the control panel to start and stop the compressor. Because the power of fixed-frequency compressors is constant, the output cooling capacity is also constant. If you want to control the room temperature, you need to start and stop the compressor continuously. When the cooling temperature reaches the set temperature, the compressor stops working, and when the temperature rises, the compressor starts cooling again.

[0067] The combined control method of variable frequency compressor and fixed frequency compressor can make the power change of the whole system tend to be moderate and smooth. Specifically, when the variable frequency air conditioner starts each time, it first heats or cools at the maximum power and maximum air volume. After the current room temperature quickly approaches the set temperature, the air conditioner compressor will operate at a low speed and low energy consumption state, and only maintain the set temperature with the required power. This not only stabilizes the temperature, but also avoids the frequent start and stop of the air conditioner compressor, which causes the attenuation of life and energy loss, and achieves smaller temperature fluctuations.

[0068] In one embodiment, the present invention configures the number of outdoor water cooling units and the air conditioning compressors therein based on the power requirements of the air conditioning compressors.

[0069] For example, due to differences in the displacement of air-conditioning compressors, different air-conditioning compressors are calibrated with different rated powers. Assuming that the output power of the variable frequency compressor is 1000W and the output power of the fixed frequency compressor is 500W, if the user's air-conditioning compressor power requirement of 8500W is to be met, at least 1 variable frequency compressor and 15 fixed frequency compressors need to be configured. The present invention can reasonably configure the number of compressors according to the air-conditioning compressor capacity requirements required by the user, and has a significant energy-saving effect.

[0070] (3) Powering on the N outdoor water cooling units and the n air-conditioning compressors.

[0071] In one embodiment, performing a power-on operation on an air-conditioning compressor includes the following steps:

[0072] Step S11, turning on the host unit to obtain a start control signal.

[0073] In one embodiment, powering on the air-conditioning compressor includes powering on the air-conditioning compressors of all host units and slave units in the outdoor water cooling unit at the same time; and starting them in the order of the host unit first, then the slave unit, and the first compressor first, then the second compressor.

[0074] Step S12: Control the startup sequence of the slave units based on the startup control signal.

[0075] Specifically, the start control signal is used to control the slave unit to start and work normally according to the set start time and start sequence, so as to achieve the effect of delayed start, while avoiding the problem of instantaneous large current caused by the simultaneous start of multiple slave units, thereby improving the overall reliability and stability of the air-conditioning system.

[0076] For example, the difference between the response time of the startup time and the time when the slave unit obtains the startup control signal sent by the host unit is set to 60 seconds (s). That is, after receiving the startup control signal from the host unit, the first slave unit can delay 60 seconds before starting the second slave unit.

[0077] Step S2: Determine whether the power-on operation is the first power-on operation.

[0078] Specifically, whether the power-on operation is the first power-on operation is determined based on whether the air-conditioning compressor is powered off. Common power-off scenarios of the air-conditioning compressor include scenarios where the air-conditioning compressor cannot work normally due to power failure, power loss, or power quality that does not meet requirements, and the first power-on operation when normal power is restored after power failure is regarded as the first power-on operation, while the operation of disconnecting and restarting the power supply of the air-conditioning compressor through the main switch of the control system does not belong to the first power-on operation of the present invention.

[0079] Step S3: If the power-on operation is the first power-on operation, start the air-conditioning compressor using the first start-up sequence; otherwise, start the air-conditioning compressor using the second start-up sequence.

[0080] In one embodiment, starting the air conditioning compressor using a first starting sequence includes the following steps:

[0081] Get the number x of air conditioning compressors that have been started;

[0082] Determine whether the number x of the started air-conditioning compressors is greater than or equal to 1 and less than the total number N of the outdoor water cooling units;

[0083] If yes, start the first compressor in the (x+1)th unit; otherwise, determine whether the number x of the air-conditioning compressors that have been started is less than the total number n of the air-conditioning compressors;

[0084] If so, the second compressor in the (x+1-N)th unit is started.

[0085] The first startup sequence is a fixed startup sequence, which is used to obtain the initial working state of each compressor in the outdoor water cooling unit.

[0086] As shown in Table 1 and Figure 2 As shown, it is assumed that the total number of outdoor water cooling units N=8 and the total number of air-conditioning compressors n=16, where unit 1 is the host unit and units 2 to 8 are slave units, and each host unit and slave unit includes a first compressor A and a second compressor B.

[0087] When units 1 to 8 are powered on for the first time, the first compressor A in unit 1 is started first. At this time, the number of air-conditioning compressors that have been started is x=1; if x=1 is judged to be greater than or equal to 1 and less than the total number of outdoor water cooling units N=8, then the first compressor A in unit 2 is started; and so on, when the number of air-conditioning compressors that have been started is x=8, if x=8 is judged to be less than the total number of air-conditioning compressors n=16, then the second compressor B in unit 1 is started; and so on, after a complete round of startup, the above process is repeated for the next round of cyclic startup.

[0088] Table 1. Air conditioning compressor startup sequence table when powering on for the first time

[0089]

[0090] In one embodiment, starting the compressor using the second starting sequence comprises the following steps:

[0091] Get the number x of air conditioning compressors that have been started;

[0092] Determine whether the number x of the started air-conditioning compressors is greater than or equal to 1 and less than the total number N of the outdoor water cooling units;

[0093] If yes, start the first compressor in the (N-x+1)th unit; otherwise, determine whether the number x of the air-conditioning compressors that have been started is less than the total number n of the air-conditioning compressors;

[0094] If so, the second compressor in the (nx)th unit is started.

[0095] As shown in Table 2 and Figure 3 As shown, when units 1 to 8 are shut down and then restarted, the first compressor A in unit 1 is started first. At this time, the number of air-conditioning compressors that have been started is x=1; if x=1 is judged to be greater than or equal to 1 and less than the total number of outdoor water-cooling units N=8, then the first compressor A in unit 8 is started; and so on, when the number of air-conditioning compressors that have been started is x=8, if x=8 is judged to be less than the total number of air-conditioning compressors n=16, then the second compressor B in unit 8 is started; and so on, after a complete round of startup, the above process is repeated for the next round of cyclic startup.

[0096] Table 2. Air conditioning compressor startup sequence when shutting down and restarting

[0097]

[0098]

[0099] In one embodiment, the air-conditioning compressor startup method of the present invention further includes starting the air-conditioning compressor alternately in a first startup sequence and a second startup sequence based on the startup control signal each time the air-conditioning compressor is shut down and restarted. The air-conditioning compressors in the master and slave machines are switched according to the preset first sequence and second sequence, so as to achieve balanced wear of multiple air-conditioning compressors in the outdoor water cooling unit, and effectively extend the service life of the VRF air-conditioning system.

[0100] In one embodiment, the air conditioner compressor starting method of the present invention further includes the following steps:

[0101] (1) Each time the device is turned off and then on again, the slave address of the current slave unit is obtained;

[0102] (2) cyclically changing the slave address according to a preset rule based on the start control signal to obtain a changed slave address;

[0103] (3) Starting the air conditioner compressor in the slave unit based on the changed slave address.

[0104] When powering on units 1 to 8 for the first time, follow Table 1 or Figure 2The air conditioner compressor startup sequence table shown in the figure is used to start the air conditioner compressor at the first power-on, and obtain the slave address of the current slave unit. For example, at the first power-on, the host address corresponding to unit 1 is 1, the slave address corresponding to unit 2 is 2, and the slave address corresponding to unit 3 is 3; and so on, the slave address corresponding to unit 8 is 8; finally, the air conditioner compressor in the slave unit is started in the order of slave addresses 2 to 8.

[0105] As shown in Table 3 and Figure 4 As shown, when units 1 to 8 are turned off and then turned on again, the slave addresses are changed cyclically in an increasing or decreasing manner to obtain the changed slave addresses. For example, when the preset rule is a decreasing rule, the host address corresponding to unit 1 is always 1, while the slave address corresponding to unit 3 is changed to 2, and the slave address corresponding to unit 4 is changed to 3; and so on, the slave address corresponding to unit 2 is 8; finally, the air-conditioning compressors in the slave units are started in the order of slave addresses 2 to 8.

[0106] As shown in Table 4 and Figure 5 As shown, when units 1 to 8 are turned off and on again, the slave addresses are changed in the same decreasing rule. For example, at this time, the host address corresponding to unit 1 is always 1, while the slave address corresponding to unit 4 becomes 2, and the slave address corresponding to unit 5 is 3; and so on, the slave address corresponding to unit 2 is 7, and the slave address corresponding to unit 3 is 8; finally, the air-conditioning compressors in the slave units are started in the order of slave addresses 2 to 8.

[0107] Table 3. Air conditioning compressor startup sequence when shutting down and restarting

[0108]

[0109] Table 4. Air conditioning compressor startup sequence when shutting down and restarting again

[0110]

[0111]

[0112] like Figure 6 As shown, the air-conditioning compressor starting system of the present invention includes a power-on module 61 , a judgment module 62 and a starting module 63 .

[0113] The power-on module 61 is used to power on the air-conditioning compressor.

[0114] The judging module 62 is connected to the power-on module 61 and is used to judge whether the power-on operation is the first power-on operation.

[0115] The starting module 63 is connected to the judging module 62 , and when the power-on operation is the first power-on operation, the air-conditioning compressor is started using a first starting sequence; otherwise, the air-conditioning compressor is started using a second starting sequence.

[0116] The embodiment of the air-conditioning compressor starting system of the present invention is the same as the embodiment of the air-conditioning compressor starting method, and will not be described in detail herein.

[0117] It should be noted that it should be understood that the division of the above modules is only a division of logical functions. In actual implementation, they can be fully or partially integrated into one physical entity, or they can be physically separated. And these modules can all be implemented in the form of software called by processing elements; they can also be all implemented in the form of hardware; some modules can also be implemented in the form of software called by processing elements, and some modules can be implemented in the form of hardware. For example, the x module can be a separately established processing element, or it can be integrated in a chip of the above-mentioned device for implementation. In addition, it can also be stored in the memory of the above-mentioned device in the form of program code, and called and executed by a processing element of the above-mentioned device. The implementation of other modules is similar. In addition, these modules can be fully or partially integrated together, or they can be implemented independently. The processing element described here can be an integrated circuit with signal processing capabilities. In the implementation process, each step of the above method or each module above can be completed by an integrated logic circuit of hardware in the processor element or instructions in the form of software.

[0118] For example, the above modules may be one or more integrated circuits configured to implement the above methods, such as one or more application specific integrated circuits (ASICs), or one or more digital signal processors (DSPs), or one or more field programmable gate arrays (FPGAs). For another example, when a module above is implemented in the form of a processing element scheduling program code, the processing element may be a general-purpose processor, such as a central processing unit (CPU) or other processors that can call program codes. For another example, these modules may be integrated together and implemented in the form of a system-on-a-chip (SOC).

[0119] like Figure 7 As shown, in one embodiment, the air-conditioning compressor starting terminal of the present invention further includes a processor 71 and a memory 72 .

[0120] The memory 72 is used to store computer programs;

[0121] The memory 72 includes: ROM, RAM, disk, USB flash drive, memory card or optical disk and other media that can store program codes.

[0122] The processor 71 is used to execute the computer program stored in the memory 72 so that the terminal executes the above-mentioned air-conditioning compressor starting method.

[0123] Preferably, the processor 71 can be a general-purpose processor, including a central processing unit (CPU), a network processor (NP), etc.; it can also be a digital signal processor (DSP), an application specific integrated circuit (ASIC), a field programmable gate array (FPGA) or other programmable logic devices, discrete gates or transistor logic devices, discrete hardware components.

[0124] In summary, the air-conditioning compressor startup method, system and terminal of the present invention realizes balanced wear of multiple compressors in the outdoor water cooling unit, effectively prolonging the service life of the VRF air-conditioning system; can reasonably configure the number of compressors according to the air-conditioning compressor capacity requirements required by the user, and has obvious energy-saving effects; the implementation method is simple, the operating cost is low, and the energy loss caused by frequent start and stop of the compressor is effectively reduced. Therefore, the present invention effectively overcomes various shortcomings in the prior art and has a high industrial utilization value.

[0125] The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Anyone familiar with the art may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by a person of ordinary skill in the art without departing from the spirit and technical concept disclosed by the present invention shall still be covered by the claims of the present invention.

Claims

1. A method for starting an air-conditioning compressor, characterized in that: The air conditioning compressor starting method comprises the following steps: Power on the air conditioning compressor; Determining whether the power-on operation is an initial power-on operation; If yes, the air-conditioning compressor is started using the first starting sequence; otherwise, the air-conditioning compressor is started using the second starting sequence; The first power-on operation after power failure and restoration of normal power supply is regarded as the initial power-on operation; Before powering on the air conditioner compressor, the following steps are also included: Obtain the air conditioning compressor capacity requirements required by users; Determine the total number N of outdoor water cooling units and the total number n of air conditioning compressors based on the air conditioning compressor capacity requirement; the outdoor water cooling unit includes a host unit and at least one slave unit; each of the host unit and the slave unit includes a first compressor and a second compressor; Starting the air conditioning compressor using a first starting sequence includes the following steps: Get the number x of air conditioning compressors that have been started; Determine whether the number x of the started air-conditioning compressors is greater than or equal to 1 and less than the total number N of the outdoor water cooling units; If yes, start the first compressor in the (x+1)th unit; otherwise, determine whether the number x of the air-conditioning compressors that have been started is less than the total number n of the air-conditioning compressors; If yes, start the second compressor in the (x+1-N)th unit; Starting the compressor using the second starting sequence comprises the following steps: Get the number x of air conditioning compressors that have been started; Determine whether the number x of the started air-conditioning compressors is greater than or equal to 1 and less than the total number N of the outdoor water cooling units; If yes, start the first compressor in the (N-x+1)th unit; otherwise, determine whether the number x of the air-conditioning compressors that have been started is less than the total number n of the air-conditioning compressors; If so, the second compressor in the (nx)th unit is started.

2. The air conditioning compressor starting method according to claim 1, characterized in that: The following steps are required to power on the air conditioner compressor: Turn on the host unit to obtain a start control signal; A startup sequence of the slave units is controlled based on the startup control signal.

3. The air conditioning compressor starting method according to claim 2, characterized in that: The method also includes starting the air-conditioning compressor alternately in a first starting sequence and a second starting sequence based on the starting control signal each time the air-conditioning compressor is shut down and restarted.

4. The air conditioning compressor starting method according to claim 2, characterized in that: The following steps are also included: Each time the power is turned off and then on again, the slave address of the current slave unit is obtained; cyclically changing the slave address according to a preset rule based on the start control signal to obtain a changed slave address; The air conditioner compressor in the slave unit is started based on the changed slave address.

5. An air conditioning compressor starting system, characterized in that: The air-conditioning compressor starting system includes a power-on module, a judgment module and a starting module; The power-on module is used to perform a power-on operation on the air-conditioning compressor; The judging module is connected to the power-on module and is used to judge whether the power-on operation is an initial power-on operation; The starting module is connected to the judging module, and when the power-on operation is the first power-on operation, the air-conditioning compressor is started using a first starting sequence; otherwise, starting the air conditioning compressor using a second starting sequence; The first power-on operation after power failure and restoration of normal power supply is regarded as the initial power-on operation; Before powering on the air conditioner compressor, the following steps are also included: Obtain the air conditioning compressor capacity requirements required by users; Determine the total number N of outdoor water cooling units and the total number n of air conditioning compressors based on the air conditioning compressor capacity requirement; the outdoor water cooling unit includes a host unit and at least one slave unit; each of the host unit and the slave unit includes a first compressor and a second compressor; Starting the air conditioning compressor using a first starting sequence includes the following steps: Get the number x of air conditioning compressors that have been started; Determine whether the number x of the started air-conditioning compressors is greater than or equal to 1 and less than the total number N of the outdoor water cooling units; If yes, start the first compressor in the (x+1)th unit; otherwise, determine whether the number x of the air-conditioning compressors that have been started is less than the total number n of the air-conditioning compressors; If yes, start the second compressor in the (x+1-N)th unit; Starting the compressor using the second starting sequence comprises the following steps: Get the number x of air conditioning compressors that have been started; Determine whether the number x of the started air-conditioning compressors is greater than or equal to 1 and less than the total number N of the outdoor water cooling units; If yes, start the first compressor in the (N-x+1)th unit; otherwise, determine whether the number x of the air-conditioning compressors that have been started is less than the total number n of the air-conditioning compressors; If so, the second compressor in the (nx)th unit is started.

6. An air conditioning compressor starting terminal, characterized in that: include: Processor and memory; The memory is used to store computer programs; The processor is used to execute the computer program stored in the memory, so that the terminal executes the air-conditioning compressor starting method according to any one of claims 1 to 4.

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