CN113790508B - APF automatic debugging control method and device, computer equipment and computer readable storage medium - Google Patents

Abstract

The invention provides an APF automatic debugging control method and device, computer equipment and a computer readable storage medium, and relates to the technical field of air conditioners. The APF automatic debugging control method comprises the following steps: s1: debugging the maximum refrigeration mode, and determining the minimum valve step; s2: maintaining the minimum valve step, debugging the first intermediate refrigeration mode, and determining the minimum frequency of the low-temperature intermediate refrigeration mode; s3: debugging a low-temperature intermediate refrigeration mode, and determining a low-temperature intermediate refrigeration valve step for maximizing the APF; s4: and debugging a rated refrigeration mode, and determining the optimal valve step considering both the low-temperature intermediate refrigeration mode and the rated refrigeration mode. The method can be suitable for the new national standard and air conditioners with determined throttling specifications, debugging logics of various running modes are mutually connected and automatically completed, manual participation is not needed, the debugging efficiency is high, and the APF can be improved to the maximum extent.

Description

APF automatic debugging control method, device, computer equipment and computer-readable storage medium

technical field

The present invention relates to the technical field of air conditioners, and in particular, to an APF automatic debugging control method, device, computer equipment and computer-readable storage medium.

Background technique

With the improvement of people's quality of life, inverter air conditioners are becoming more and more popular. The APF (full name: Annual Performance Factor, Chinese name: Annual Energy Consumption Rate) test of the inverter air conditioner involves multiple test items, which need to be determined by manual experiments. During the experiment, there are many debugging variables, which need to be changed many times and require long-term manual participation. , and the data is manually valued, and the test efficiency is low. When the personnel leave the post, the prototype runs all the time, wasting time.

SUMMARY OF THE INVENTION

The problem solved by the present invention is that the APF test of the existing air conditioner has a high degree of manual participation, which leads to the problem of low test efficiency.

In order to solve the above problems, in the first aspect, the present invention provides an APF automatic debugging control method, and the APF automatic debugging control method includes:

S1: Debug the maximum cooling mode and determine the minimum valve step;

S2: Keep the minimum valve step, debug the first intermediate cooling mode, and determine the minimum frequency of the low-temperature intermediate cooling mode;

S3: Debug the low temperature intermediate refrigeration mode, and determine the low temperature intermediate refrigeration valve step that maximizes the APF;

S4: Debug the rated cooling mode, and determine the best valve step for both the low-temperature intermediate cooling mode and the rated cooling mode.

Compared with the prior art, the APF automatic debugging control method provided by the present invention has at least the following beneficial effects:

1. This method can be applied to the new national standard, the APF of the new national standard can be calculated synchronously, and it is also suitable for air conditioners whose throttling specifications are determined. The debugging logics of the different operation modes are connected with each other and completed automatically, that is, the method provided by the present invention does not require manual participation, can realize automatic debugging of APF, and has high debugging efficiency;

2. A specific debugging sequence is set. Test items that have a greater impact on APF first, and then test items that have less impact on APF, can not only determine the best valve step, but also maximize APF;

3. The debugging sequence adopted should take into account the test items under the same working conditions as far as possible, such as the debugging of the first intermediate cooling mode, the low temperature intermediate cooling mode and the rated cooling mode, to avoid switching back and forth between the experimental conditions and improve the test efficiency;

4. First, the debugging of the maximum cooling mode is carried out to avoid the situation that the determined optimal valve step cannot make the cooling capacity in the maximum cooling mode insufficient and cause the machine to trip after the completion of other test items.

In an optional embodiment, the step of S1 includes:

Determine whether the number of debugging is greater than 1;

If the number of debugging times is not greater than 1, adjust the frequency and valve step until the frequency and valve step are stable, and keep the stable valve step;

If the debugging times is greater than 1, reduce the valve step until the current valve step is stable, and the current valve step is greater than the last valve step or the exhaust temperature is greater than the preset temperature, and the current valve step after stabilization is the minimum valve step.

In an optional embodiment, the step of S2 includes:

Maintain the minimum valve step and maximum speed;

Determine whether the capacity value of the air conditioner is greater than the sum of the capacity lower limit value and the first preset value;

If the capability value is not greater than the sum of the capability lower limit value and the first preset value, reduce the frequency;

If the capability value is greater than the sum of the capability lower limit value and the first preset value, determine whether the capability value is smaller than the capability lower limit value;

If the ability value is not less than the lower limit value of the ability, increase the frequency;

If the capacity value is less than the capacity lower limit value, the minimum frequency of the low temperature intermediate cooling mode is determined.

In an optional embodiment, the step of S3 includes:

Determine whether the number of debugging is greater than 1;

If the number of debugging is not more than 1, keep the valve step unchanged, and the frequency is the same as the frequency in the first intermediate cooling mode, until the frequency and valve step are stable, and keep the stable data;

If the debugging times are greater than 1, increase the valve step until the APF is less than the difference between the APF _MAX and the second preset value or the APF drops at least twice continuously, and the current valve step is determined as the low temperature intermediate refrigeration valve step.

In an optional embodiment, if the number of debugging times is greater than 1, the valve step is increased until the APF is less than the difference between the APF _MAX and the second preset value or the APF drops at least twice in a row, and the current valve step is determined to be the low-temperature intermediate refrigeration valve step. The steps include:

Increase valve steps and save data after stabilization;

Determine whether the APF is less than the difference between the APF _MAX and the second preset value or whether the APF drops at least twice in a row;

If the APF is not less than the difference between the APF _MAX and the second preset value and the APF does not drop at least twice in a row, continue to increase the valve step;

If the APF is less than the difference between the APF _MAX and the second preset value or the APF drops at least twice in a row, it is determined that the current valve step is a low temperature intermediate refrigeration valve step.

In an optional embodiment, the step of S4 includes:

Use multiple groups of valve steps in the low temperature intermediate cooling mode to test the rated cooling mode respectively;

Calculate the APF from the data of the low temperature intermediate cooling mode and the rated cooling mode of the same valve step, and determine the valve step corresponding to the best APF, which is the best valve step.

In an optional implementation manner, the APF automatic debugging control method further includes:

S5: Debug the second intermediate cooling mode, use the best valve step, minimum frequency and maximum speed to test to determine the frequency locking parameters.

In an optional embodiment, the step of S5 includes:

Determine whether the optimal valve step is the same as the maximum refrigeration valve step;

If the optimal valve step is different from the maximum refrigeration valve step, use the optimal valve step to test the second intermediate refrigeration mode to determine the frequency-locking parameters;

If the optimum valve step is the same as the maximum cooling valve step, the debugging of the current second intermediate cooling mode will be skipped.

In a second aspect, the present invention provides an APF automatic debugging control device, and the APF automatic debugging control device includes:

The maximum cooling debugging module is used to execute S1: Debug the maximum cooling mode and determine the minimum valve step;

The first intermediate refrigeration debugging module is used to execute S2: keep the minimum valve step, debug the first intermediate refrigeration mode, and determine the minimum frequency of the low-temperature intermediate refrigeration mode;

Low temperature intermediate refrigeration debugging module, used to execute S3: Debug low temperature intermediate refrigeration mode, determine the low temperature intermediate refrigeration valve step that maximizes APF;

The rated cooling debugging module is used to perform S4: Debugging the rated cooling mode, and determine the best valve step that takes into account both the low-temperature intermediate cooling mode and the rated cooling mode.

In a third aspect, the present invention provides a computer device, the computer device comprising:

one or more processors;

The memory is used to store one or more programs, and when the one or more programs are executed by one or more processors, enables the one or more processors to implement the APF automatic debugging control method according to any one of the foregoing embodiments.

In a fourth aspect, the present invention provides a computer-readable storage medium on which a computer program is stored, and when the computer-readable storage medium is executed by a processor, implements the APF automatic debugging control method according to any one of the foregoing embodiments.

Description of drawings

1 is a schematic diagram of an application scenario of an APF automatic debugging control method provided by the present invention;

2 is a schematic block diagram of a computer device provided by the present invention;

Fig. 3 is the test sequence of the APF automatic debugging control method provided by the present invention to each test item;

4 is a schematic flowchart of an APF automatic debugging control method provided by the present invention;

Figure 5 is the specific flow chart of the maximum cooling mode debugging;

Fig. 6 is the specific flow chart of the debugging of the first intermediate cooling mode;

Fig. 7 is the specific flow chart of the low temperature intermediate refrigeration mode debugging;

Fig. 8 is the specific flow chart of the rated cooling mode debugging;

FIG. 9 is a schematic block diagram of an APF automatic debugging control device provided by the present invention.

Description of reference numbers:

10-computer equipment; 11-processor; 12-memory; 13-bus; 100-APF automatic debugging control device; 110-maximum refrigeration debugging module; 120-first intermediate refrigeration debugging module; 130-low temperature intermediate refrigeration debugging module; 140-rated cooling debugging module; 150-second intermediate cooling debugging module; 160-other mode debugging module.

Detailed ways

In order to make the above objects, features and advantages of the present invention more clearly understood, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

Please refer to FIG. 1, FIG. 1 is a schematic diagram of an application scenario of the APF automatic debugging control method provided by the present invention, including computer equipment, a test bench and an air conditioner, the computer equipment and the test bench and the air conditioner are all connected in communication, and the air conditioner is placed on the test bench Above, the air conditioner refers to the air conditioner that needs to be tested, that is, the air conditioner under test.

The computer equipment is used for automatic testing of the air conditioner, and it is pre-installed with testing software and a database. The test software has a software interface for man-machine interaction with the tester. For example, the tester can set the air conditioner model through the software interface, that is, select or input the model of the air conditioner under test through the software interface. At the same time, the computer The device can display the test results of the air conditioner under test through the software interface.

The test software includes various control algorithms and test algorithms, and can control the working state of the air conditioner and the test bench by running various control algorithms and test algorithms, and realize the APF automatic debugging control method described in the following embodiments.

Test data of various models of air conditioners that have been tested are stored in the database, for example, historical test data of the air conditioner under test, and test data of other air conditioners similar to the model of the air conditioner under test.

Optionally, the computer equipment can be any one of a smart phone, a tablet computer, a portable notebook computer, a desktop computer, an industrial computer, a server, etc., and the above equipment can be used to implement the APF automatic debugging control method described in the following embodiments. .

The test bench is used to work according to the set working condition requirements under the control of the computer equipment, and to collect the environmental parameters in the test process and send them to the computer equipment. Environmental parameters may include, but are not limited to, indoor dry bulb temperature, indoor wet bulb temperature, outdoor dry bulb temperature, outdoor wet bulb temperature, and the like.

The air conditioner is used to work under the control of the computer equipment according to the given initial values of the operating parameters, and to collect the actual values of the operating parameters during the testing process and send them to the computer equipment. The operating parameters may include, but are not limited to, compressor frequency, expansion valve Valve step, actual speed of indoor unit and actual speed of outdoor unit, etc.

The air conditioner includes a remote control launch module and a communication module, and the computer equipment can send an operation command to the air conditioner through the remote control launch module, so that the air conditioner operates according to the operation command. At the same time, the air conditioner can send operating parameters, fault codes, etc. to the computer equipment through the communication module.

Please refer to FIG. 2 , which is a schematic block diagram of a computer device provided by the present invention. The computer device 10 includes a processor 11 , a memory 12 and a bus 13 , and the processor 11 and the memory 12 are connected through the bus 13 .

The memory 12 is used to store programs, such as the APF automatic debugging control device 100 shown in FIG. 9 . The APF automatic debugging control device 100 includes at least one software function module which can be stored in the memory 12 in the form of software or firmware (firmware) or fixed in an operating system (operating system, OS) of the computer device 10 . After receiving the execution instruction, the processor 11 executes the program to implement the APF automatic debugging control method disclosed in the following embodiments.

The processor 11 may be an integrated circuit chip with signal processing capability. In the implementation process, each step of the APF automatic debugging control method can be completed by an integrated logic circuit of hardware in the processor 11 or an instruction in the form of software.

The above-mentioned processor 11 may be a general-purpose processor, including a central processing unit (CPU for short), a network processor (NP for short), etc.; it may also be a digital signal processor (DSP), an application-specific integrated circuit (ASIC). ASIC), off-the-shelf programmable gate array (FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components.

In the APF calculation of the new national standard, the energy efficiency of some test items is proportional to the APF, and some items are inversely proportional to the APF. In order to adapt to the calculation logic of the new national standard, this embodiment provides an APF automatic debugging control method, which does not take the energy efficiency of a single test item as the test target, but takes the overall APF as the test target.

In the program stored in the memory 12 of this embodiment, the calculation logic of the APF of the new national standard can be written into the background code, and when the test is not performed, the nameplate value in the database is temporarily used for APF calculation; after each test item data is saved, the This capability and power replace the nameplate value, perform APF calculation, calculate the APF of the current data, and compare it with the previously saved data. If the APF increases, continue debugging in the current direction, and if the AFP decreases, adjust in the opposite direction. .

At the same time, in order to make the automatic debugging program also applicable to the situation where the throttling specification is determined, it is necessary to confirm the optimal throttling specification through experiments. Generally, designers need to constantly replace the throttling device and take into account the frequency locking test results of different test items in order to confirm the optimal throttling specification. In order to avoid replacing the throttling device and facilitate the software to automatically control the throttling specifications, the optimized APF automatic debugging program uses the expansion valve as the throttling device, and simulates the throttling device of different specifications with different valve steps of the expansion valve.

During the commissioning process, the test items that have a greater impact on the APF are firstly carried out, and the valve steps of the expansion valve are continuously adjusted to determine the optimal valve steps of the expansion valve, that is, the optimal throttling specification. After the optimal expansion valve valve step is determined, other test items that have less influence on the APF are optimized and debugged on the basis of the optimal expansion valve valve step for frequency and rotational speed. After the test items required for the APF calculation are all debugged, the throttling specification can be estimated based on the temperature and pressure obtained from the rated refrigeration test, which can be estimated using the empirical formula. In the following introduction, the expansion valve step is used to replace the throttling specification.

On the basis of the computer device 10 shown in FIG. 2 , a possible implementation of the APF automatic debugging control method is given below. Specifically, FIG. 3 is the test of each test item by the APF automatic debugging control method provided by the present invention. Sequence, that is to say, the test sequence of the APF automatic debugging control method provided by the present invention is: maximum cooling mode, first intermediate cooling mode, low temperature intermediate cooling mode, rated cooling mode, second intermediate cooling mode, 25% rated cooling mode , 25% low temperature cooling mode, low temperature rated cooling mode, rated heating mode, intermediate heating mode and 25% heating mode.

Fig. 4 is a kind of schematic flow chart of the APF automatic debugging control method provided by the present invention, please refer to Fig. 3, the APF automatic debugging control method may comprise steps:

S1: Debug the maximum cooling mode and determine the minimum valve step.

When confirming the cooling throttling device, there is a possibility that the maximum cooling mode cannot meet the capacity requirements or the exhaust gas temperature is too high. Therefore, the method provided in this embodiment starts the test from the maximum cooling mode, and then tests the frequency and temperature in the maximum cooling mode. Valve step adjustment, determine the minimum valve step.

Specifically, please refer to Figure 5, the steps of S1 include:

S11: Determine whether the number of debugging times is greater than 1.

If the number of debugging is not greater than 1, go to S12: adjust the frequency and valve steps until the frequency and valve steps are stable, and keep the stable valve steps.

If the debugging times are greater than 1, go to S13: reduce the valve step until the current valve step is stable, and save the current valve step and exhaust temperature.

S14: Determine whether the current valve step is greater than the last valve step or whether the exhaust gas temperature is greater than the preset temperature.

The range of the preset temperature may be: 110°C to 115°C, and the specific value may be 112°C.

If the current valve step is not greater than the previous valve step and the exhaust gas temperature is not greater than the preset temperature, return to S13.

If the current valve step is greater than the previous valve step or the exhaust gas temperature is greater than the preset temperature, perform S15: the current valve step after stabilization is the minimum valve step.

S2: Keep the minimum valve step, debug the first intermediate cooling mode, and determine the minimum frequency of the low-temperature intermediate cooling mode.

Because in the new national standard, the low temperature intermediate cooling mode has a greater impact on the APF, and the APF is proportional to the energy efficiency of the low temperature intermediate cooling mode. Therefore, the lower the frequency of the low temperature intermediate cooling mode, the higher the APF, and the low temperature intermediate cooling mode needs to be refined first. However, because the new national standard requires the frequency of the low-temperature intermediate cooling mode and the first intermediate cooling mode to be the same, and the capacity of the first intermediate cooling mode has a minimum requirement, the frequency of the low-temperature intermediate cooling mode and the first intermediate cooling mode needs to be determined by the first intermediate cooling mode. The intermediate cooling mode is determined, so before debugging the low-temperature intermediate cooling mode, first confirm the minimum frequency of the first intermediate cooling mode.

When adjusting the first intermediate cooling mode, the minimum valve step determined by the maximum cooling mode is used. At the same time, the internal and external motors run at the maximum speed, and the frequency is adjusted to determine the minimum frequency that meets the lower limit capacity of the first intermediate cooling mode.

Specifically, please refer to Figure 6, the steps of S2 include:

S21: Keep the minimum valve step and maximum speed.

S22: Determine whether the capacity value of the air conditioner is greater than the sum of the capacity lower limit value and the first preset value.

The value of the first preset value may be 50.

If the capability value is not greater than the sum of the capability lower limit value and the first preset value, proceed to S23: reduce the frequency.

If the capability value is greater than the sum of the capability lower limit value and the first preset value, proceed to S24: determine whether the capability value is smaller than the capability lower limit value.

If the capability value is not less than the capability lower limit value, proceed to S25: increase the frequency.

If the capacity value is less than the capacity lower limit value, proceed to S26: determine the minimum frequency of the low-temperature intermediate cooling mode.

S3: Debug the low-temperature intermediate cooling mode, and determine the low-temperature intermediate cooling valve step that maximizes the APF.

The low-temperature intermediate cooling mode runs at the minimum valve step and minimum frequency, saves the data after stabilization, and performs the next set of additional valve step tests. After the operation is stable, save the data, and compare the size of the current APF and the optimal APF. If the current APF rises, Continue to increase the valve step, otherwise, end the valve step adjustment, and determine the valve step of the optimal low temperature intermediate cooling mode.

Because the flow rate of the low temperature intermediate cooling mode is small, the valve step is relatively small, and the APF is high. However, in the cooling condition, in addition to the low temperature intermediate cooling mode, the rated cooling mode also has a greater impact on the APF, and the rated cooling mode has a large refrigerant flow, and the valve step increases a little, and the APF will increase. In order to neutralize the two working conditions, determine the optimal refrigeration valve step, add two more valve steps on the basis of the optimal low temperature intermediate refrigeration valve step, and test the low temperature intermediate refrigeration mode and the rated refrigeration mode, according to the best value of APF , to determine the optimal valve step for cooling.

Specifically, please refer to Fig. 7, the steps of S3 include:

S31: Determine whether the number of debugging times is greater than 1.

If the number of debugging is not greater than 1, go to S32: keep the valve step unchanged, and the frequency is the same as the frequency in the first intermediate cooling mode, until the frequency and valve step are stable, and keep the stable data.

If the number of debugging is greater than 1, go to S33: increase the valve step, and save the data after stabilization.

S34: Determine whether the APF is less than the difference between the APF _MAX and the second preset value or whether the APF drops continuously for at least two times.

Wherein, the second preset value may be 0.001.

If the APF is not less than the difference between the APF _MAX and the second preset value and the APF does not drop at least twice in a row, the process returns to S33.

If the APF is smaller than the difference between the APF _MAX and the second preset value or the APF drops at least twice in a row, then go to S35 : determine that the current valve step is a low temperature intermediate refrigeration valve step.

S36: Increase the valve step by a preset ratio, and test two groups. Wherein, the preset ratio may be 3%.

S4: Debug the rated cooling mode, and determine the best valve step for both the low-temperature intermediate cooling mode and the rated cooling mode.

During the test of the rated cooling mode, use the three valve steps of the above-mentioned low-temperature intermediate cooling mode to perform the test respectively. The valve step corresponding to the best APF is the best valve step.

Specifically, please refer to Fig. 8, the steps of S4 include:

S41: Use the three groups of valve steps of the low temperature intermediate cooling mode to test the rated cooling mode respectively.

S42: Calculate the APF from the data of the low temperature intermediate cooling mode and the rated cooling mode of the same valve step.

S43: Determine the valve step corresponding to the optimal APF, which is the optimal valve step.

S5: Debug the second intermediate cooling mode, use the best valve step, minimum frequency and maximum speed to test to determine the frequency locking parameters.

Specifically, the steps of S5 include:

Determine whether the optimal valve step is the same as the maximum refrigeration valve step; if the optimal valve step is not the same as the maximum refrigeration valve step, use the optimal valve step to perform the second intermediate refrigeration mode test to determine the frequency locking parameters; The same as the maximum cooling valve step, the debugging of the current second intermediate cooling mode is skipped.

S6: Perform tests of other test items in sequence.

Other test items are tested with the best valve step, and then the frequency and rotational speed are adjusted, which is basically the same as the conventional method, and will not be repeated here.

In order to execute the corresponding steps in the above embodiments and possible implementation manners, an implementation manner of an APF automatic debugging control apparatus is given below. Please refer to FIG. 9 , which is a schematic diagram of functional modules of the APF automatic debugging control device 100 provided by the present invention. It should be noted that, the basic principles and technical effects of the APF automatic debugging control device 100 in this embodiment are the same as those in the foregoing method embodiments. For brief description, the parts not mentioned in this embodiment may refer to the foregoing method embodiments. corresponding content. The APF automatic debugging control device 100 is applied to the computer equipment 10. The APF automatic debugging control device 100 will be introduced below with reference to FIG. The cooling debugging module 130 , the rated cooling debugging module 140 , the second intermediate cooling debugging module 150 and the other mode debugging module 160 .

The maximum cooling debugging module 110 is used for executing S1: debugging the maximum cooling mode, and determining the minimum valve step.

The first intermediate refrigeration debugging module 120 is configured to perform S2: maintain the minimum valve step, debug the first intermediate refrigeration mode, and determine the minimum frequency of the low-temperature intermediate refrigeration mode.

The low-temperature intermediate refrigeration debugging module 130 is configured to perform S3: debug the low-temperature intermediate refrigeration mode, and determine the low-temperature intermediate refrigeration valve step that maximizes the APF.

The rated refrigeration debugging module 140 is configured to perform S4: debug the rated refrigeration mode, and determine the optimal valve step that takes into account both the low-temperature intermediate refrigeration mode and the rated refrigeration mode.

The second intermediate refrigeration debugging module 150 is configured to perform S5 : debug the second intermediate refrigeration mode, use the optimal valve step, the minimum frequency and the maximum rotational speed to test, and determine the frequency locking parameter.

The other mode debugging module 160 is configured to execute S6: successively test other test items.

Compared with the prior art, the APF automatic debugging control method, device, computer equipment and computer-readable storage medium provided by the present invention have at least the following beneficial effects:

1. This method can be applied to the new national standard, the APF of the new national standard can be calculated synchronously, and it is also suitable for air conditioners whose throttling specifications are determined. The debugging logics of the different operation modes are connected with each other and completed automatically, that is, the method provided by the present invention does not require manual participation, can realize automatic debugging of APF, and has high debugging efficiency;

2. A specific debugging sequence is set. Test items that have a greater impact on APF first, and then test items that have less impact on APF, can not only determine the best valve step, but also maximize APF;

3. The debugging sequence adopted should take into account the test items under the same working conditions as far as possible, such as the debugging of the first intermediate cooling mode, the low temperature intermediate cooling mode and the rated cooling mode, to avoid switching back and forth between the experimental conditions and improve the test efficiency;

4. First, the debugging of the maximum cooling mode is carried out to avoid the situation that the determined optimal valve step cannot make the cooling capacity in the maximum cooling mode insufficient and cause the machine to trip after the completion of other test items;

5. The APF automatic debugging control method can calculate the APF according to the logic of the new national standard, and determine the direction of the next debugging according to the rising and falling trend of the APF. The software performs the calculation, which is simple and efficient.

Although the present invention is disclosed above, the present invention is not limited thereto. Any person skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the protection scope of the present invention should be based on the scope defined by the claims.

Claims (7)

1. APF automatic debugging control method is characterized in that, described APF automatic debugging control method comprises: S1: Debug the maximum cooling mode to determine the minimum valve step, including: judging whether the number of debugging is greater than 1; if the number of debugging is not greater than 1, adjust the frequency and valve step until the frequency and valve step are stable and remain stable If the debugging times is greater than 1, reduce the valve step until the current valve step is stable, and the current valve step is greater than the last valve step or the exhaust temperature is greater than the preset temperature, the current valve step after stabilization step is the minimum valve step; S2: Keeping the minimum valve step, debugging the first intermediate cooling mode, and determining the minimum frequency of the low-temperature intermediate cooling mode, including: maintaining the minimum valve step and the maximum rotational speed; judging whether the capacity value of the air conditioner is greater than the lower capacity limit The sum of the value and the first preset value; if the capability value is not greater than the sum of the capability lower limit value and the first preset value, reduce the frequency; if the capability value is greater than the capability lower limit value and the first preset value, then judge whether the capability value is less than the capability lower limit value; if the capability value is not less than the capability lower limit value, increase the frequency; if the capability value is not less than the capability lower limit value, increase the frequency; is less than the lower limit value of the capability, then determine the minimum frequency of the low-temperature intermediate cooling mode; S3: Debug the low-temperature intermediate refrigeration mode, and determine the low-temperature intermediate refrigeration valve step that maximizes the APF, including: judging whether the number of times of debugging is greater than 1; if the number of times of debugging is not greater than 1, keep the valve step unchanged, and the frequency is the same as The frequency in the first intermediate cooling mode is the same until the frequency and the valve step are stable, and the stable data is maintained; if the debugging times is greater than 1, the valve step is increased until the APF is less than the APF _MAX and the second preset value The difference or the APF drops continuously at least twice, and the current valve step is determined to be the low-temperature intermediate refrigeration valve step; S4: Debugging the rated cooling mode, and determining the optimal valve step that takes both the low-temperature intermediate cooling mode and the rated cooling mode into consideration, including: using multiple groups of valve steps of the low-temperature intermediate cooling mode to test the rated cooling mode respectively; The APF is calculated from the data of the low-temperature intermediate refrigeration mode and the rated refrigeration mode of the same valve step, and the valve step corresponding to the optimal APF is determined, that is, the optimal valve step. 2. The APF automatic debugging control method according to claim 1, wherein if the debugging times is greater than 1, the valve step is increased until the APF is less than the difference between the APF _MAX and the second preset value or the APF is continuous Descending at least twice, the step of determining that the current valve step is the low-temperature intermediate refrigeration valve step includes: increasing the valve step, and saving the data after stabilization; Determine whether the APF is less than the difference between the APF _MAX and the second preset value or whether the APF drops at least twice in a row; if the APF is not less than the difference between the APF _MAX and the second preset value and the APF does not drop at least twice in a row, continue to increase the valve step; If the APF is less than the difference between the APF _MAX and the second preset value or the APF drops at least twice in a row, it is determined that the current valve step is the low-temperature intermediate refrigeration valve step. 3. APF automatic debugging control method according to claim 1, is characterized in that, described APF automatic debugging control method also comprises: S5: Debugging the second intermediate refrigeration mode, using the optimal valve step, the minimum frequency and the maximum rotational speed to perform a test to determine a frequency locking parameter. 4. APF automatic debugging control method according to claim 3, is characterized in that, the step of S5 comprises: Determine whether the optimal valve step is the same as the maximum refrigeration valve step; If the optimal valve step is different from the maximum refrigeration valve step, use the optimal valve step to perform the second intermediate refrigeration mode test to determine the frequency locking parameter; If the optimal valve step is the same as the maximum cooling valve step, the debugging of the current second intermediate cooling mode is skipped. 5. APF automatic debugging control device, is characterized in that, described APF automatic debugging control device comprises: The maximum cooling debugging module (110) is used for executing S1: debugging the maximum cooling mode, and determining the minimum valve step includes: judging whether the debugging times is greater than 1; if the debugging times is not greater than 1, adjusting the frequency and valve steps until The frequency and valve step are stable, and keep the valve step after stabilization; if the debugging times is greater than 1, reduce the valve step until the current valve step is stable, and the current valve step is greater than the last valve step or the exhaust temperature is greater than the preset value. Set the temperature, the current valve step after stabilization is the minimum valve step; A first intermediate refrigeration debugging module (120), configured to perform S2: maintaining the minimum valve step, debugging the first intermediate refrigeration mode, and determining the minimum frequency of the low-temperature intermediate refrigeration mode, including: maintaining the minimum valve step and the maximum Rotation speed; determine whether the capacity value of the air conditioner is greater than the sum of the capacity lower limit value and the first preset value; if the capacity value is not greater than the sum of the capacity lower limit value and the first preset value, reduce the frequency ; If the capability value is greater than the sum of the capability lower limit value and the first preset value, determine whether the capability value is less than the capability lower limit value; if the capability value is not less than the capability lower limit value If the capacity value is less than the capacity lower limit value, then determine the minimum frequency of the low-temperature intermediate cooling mode; A low-temperature intermediate refrigeration debugging module (130), configured to perform S3: debug the low-temperature intermediate refrigeration mode, and determine a low-temperature intermediate refrigeration valve step that maximizes the APF, including: judging whether the number of times of debugging is greater than 1; if the number of times of debugging is not If it is greater than 1, keep the valve step unchanged, and the frequency is the same as the frequency in the first intermediate cooling mode, until the frequency and valve step are stable, and keep the stable data; if the debugging times is greater than 1, increase the valve step , until the APF is less than the difference between the APF _MAX and the second preset value or the APF drops continuously for at least two times, determining that the current valve step is the low-temperature intermediate refrigeration valve step; A rated cooling debugging module (140), configured to perform S4: perform rated cooling mode debugging, and determine an optimal valve step that takes both the low-temperature intermediate cooling mode and the rated cooling mode into consideration, including: using multiple low-temperature intermediate cooling modes Group valve steps to test the rated cooling mode respectively; calculate the APF from the data of the low-temperature intermediate cooling mode and the rated cooling mode of the same valve step, and determine the valve step corresponding to the best APF, which is the best valve step . 6. A computer device, characterized in that the computer device comprises: one or more processors (11); A memory (12) for storing one or more programs which, when executed by the one or more processors (11), cause the one or more processors (11) to implement The APF automatic debugging control method according to any one of claims 1 to 4. 7. A computer-readable storage medium on which a computer program is stored, characterized in that, when the computer-readable storage medium is executed by a processor (11), the APF according to any one of claims 1 to 4 is implemented Automatically debug control method.

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