WO2021042666A1 - Air conditioner intermediate capability control method, air conditioner and memory - Google Patents

Abstract

An air conditioner intermediate capability control method, an air conditioner and a storage medium. The air conditioner intermediate capability control method comprises the following steps: after an air conditioner enters an intermediate capability test mode, acquiring the actual operation power of the air conditioner; when the ratio of the actual operation power to intermediate capability rated power is not within a preset threshold range, adjusting operation parameters of refrigeration components of the air conditioner so as to adjust the actual operation power of the air conditioner; and returning to execute the step of acquiring the actual operation power of the air conditioner. The air conditioner and the storage medium can realize the air conditioner intermediate capability control method above.

Description

Method for controlling intermediate capacity of air conditioner, air conditioner and storage

Related application

This application claims the priority of the Chinese patent application filed on September 3, 2019, with the application number 201910836604.2, titled "Control Method of Air Conditioner Intermediate Capacity, Air Conditioner and Storage Medium".

Technical field

This application relates to the technical field of air conditioners, and in particular to a method for controlling the intermediate capacity of an air conditioner, an air conditioner and a storage medium.

Background technique

Inverter air conditioners generally include two working conditions of full capacity and intermediate capacity. In actual operation, the operating power of the air conditioner often deviates from the rated power of the corresponding working condition. Therefore, the air conditioner is generally set with the allowable deviation range of the working condition. When operating under a certain working condition, if the operating power is within the allowable deviation range of the operating condition, it means that the air conditioner is operating normally, and if the operating power is not within the allowable deviation range of the operating condition, it means that the air conditioner cannot operate normally. . For the intermediate capacity, the allowable deviation range is small, especially for high-efficiency inverter air conditioners. Therefore, in order to ensure that the air conditioner meets the normal operation standards, the air conditioner needs to be tested for the intermediate capacity. The existing air conditioners generally have an intermediate capacity test mode. , When the intermediate capacity test of the air conditioner is performed, the air conditioner runs directly according to the fixed target parameters corresponding to the intermediate capacity. If its operating power is within the allowable deviation range of the intermediate capacity working condition, the intermediate capacity test of the output air conditioner meets the standard. If the operating power of the air conditioner is not within the allowable deviation range of the intermediate capacity working condition, the intermediate capacity test of the output air conditioner does not meet the standard. However, the air conditioner is affected by the production, experiment and even the actual operating environment, and the actual operating power is deviated. When the air conditioner enters the intermediate capacity test mode, running with fixed target parameters can easily cause inaccurate test results and reduce the test pass rate.

The above content is only used to assist the understanding of the technical solutions of this application, and does not mean that the above content is recognized as prior art.

Summary of the invention

technical problem

The solution to the problem

Technical solutions

The main purpose of this application is to provide a method for controlling the intermediate capacity of an air conditioner, an air conditioner, and a storage medium, which aims to solve the problem that the air conditioner has different operating capacities when affected by different environments during the actual operation of the air conditioner. The air conditioner enters the intermediate capacity test Running with fixed target parameters in the mode is likely to cause inaccurate test results and reduce the technical problem of test pass rate.

To achieve the above objective, the present application provides a method for controlling the intermediate capacity of an air conditioner. The method for controlling the intermediate capacity of an air conditioner includes the following steps:

After the air conditioner enters the intermediate capacity test mode, obtain the actual operating power of the air conditioner;

If the ratio of the actual operating power to the rated power of the intermediate capacity is not within the preset threshold range, adjusting the operating parameters of the refrigeration components of the air conditioner to adjust the actual operating power of the air conditioner;

Return to the step of obtaining the actual operating power of the air conditioner.

Optionally, the air conditioner does not have an electronic expansion valve, and the step of adjusting the operating parameters of the refrigeration component of the air conditioner includes:

The operating frequency of the compressor of the air conditioner is adjusted.

Optionally, the step of adjusting the operating frequency of the compressor of the air conditioner includes:

Acquiring the indoor heat exchanger temperature of the air conditioner;

The difference between the indoor heat exchanger temperature and the rated indoor heat exchanger temperature corresponding to the intermediate capacity is within a first preset difference range, and the operating frequency of the compressor of the air conditioner is adjusted.

Optionally, when the air conditioner has an electronic expansion valve, the step of adjusting the operating parameters of the refrigeration component of the air conditioner includes:

Obtain the exhaust temperature of the compressor of the air conditioner;

Determining the target refrigeration component according to the difference between the exhaust temperature and the rated exhaust temperature corresponding to the intermediate capacity, wherein the refrigeration component includes at least one of a regulating compressor and an electronic expansion valve;

Adjust the operating parameters of the target refrigeration component.

Optionally, the ratio of the actual operating power to the rated power of the intermediate capacity is greater than the maximum threshold of the preset threshold range, and the target refrigeration is determined according to the difference between the exhaust gas temperature and the rated exhaust temperature corresponding to the intermediate capacity The component steps include:

The difference between the exhaust temperature and the rated exhaust temperature corresponding to the intermediate capacity is greater than a first preset difference, and it is determined that the target refrigeration component is an electronic expansion valve;

The difference between the exhaust temperature and the rated exhaust temperature corresponding to the intermediate capacity is less than a first preset difference, and it is determined that the target refrigeration component is the compressor.

Optionally, the target refrigeration component is an electronic expansion valve, and the step of adjusting the target refrigeration component includes: increasing the opening of the electronic expansion valve;

The target refrigeration component is a compressor, and the step of adjusting the target refrigeration component includes: reducing the operating frequency of the compressor.

Optionally, the ratio of the actual operating power to the intermediate capacity rated power is less than the minimum value in the preset threshold range, and the operating power is determined according to the difference between the exhaust gas temperature and the intermediate capacity rated exhaust temperature The steps of the target refrigeration component include:

The difference between the exhaust temperature and the rated exhaust temperature corresponding to the intermediate capacity is less than a second preset threshold, and it is determined that the target refrigeration component is an electronic expansion valve;

If the difference between the exhaust temperature and the rated exhaust temperature corresponding to the intermediate capacity is greater than a second preset threshold, it is determined that the target refrigeration component is a compressor;

Wherein, the first preset threshold is greater than the second preset threshold.

Optionally, the target refrigeration component is an electronic expansion valve, and the step of adjusting the operating parameters of the target refrigeration component includes: reducing the opening degree of the electronic expansion valve;

The target refrigeration component is a compressor, and the step of adjusting the operating parameter of the target refrigeration component includes: increasing the operating frequency of the compressor.

Optionally, after the step of adjusting the operating parameters of the refrigeration component of the air conditioner, the method further includes:

After the exit condition is met, exit the intermediate ability test mode.

Optionally, the determination method for satisfying the exit condition includes at least one of the following:

The ratio of the actual operating power to the rated power of the intermediate capacity is within the preset threshold range;

The running time of the intermediate ability test mode is greater than the preset time;

The ratio of the actual operating power to the rated power of the intermediate capacity is not within the preset threshold range;

A command to switch the operating mode was received.

Optionally, the method for controlling the intermediate capacity of the air conditioner further includes:

After the air conditioner enters the intermediate capacity test mode, it runs for a preset time according to the target operating parameters;

Get the current ambient temperature;

It is determined that the difference between the current ambient temperature and the target ambient temperature of the intermediate capacity is within a second preset difference range, and the step of collecting the operating voltage value and the operating current value of the air conditioner is performed.

In order to achieve the above object, the present application also provides an air conditioner, the air conditioner comprising: a memory, a processor, and a control program stored in the memory and capable of running on the processor, and the control program is controlled by the processor. When the processor is executed, each step of the method for controlling the intermediate capacity of the air conditioner as described above is realized.

In addition, the present application also provides a storage medium on which a control program is stored, and when the control program is executed by a processor, each step of the method for controlling the intermediate capacity of the air conditioner as described above is realized.

A method for controlling the intermediate capacity of an air conditioner, an air conditioner, and a storage medium proposed in the embodiments of the present application. After the air conditioner enters the intermediate capacity test mode, the actual operating power of the air conditioner and the rated power of the intermediate capacity are used to determine the actual air conditioner. Whether the operating power is within the allowable deviation range of the intermediate capacity, if not, adjust the operating parameters of the refrigeration components of the air conditioner to adjust the actual operating power of the air conditioner to avoid the air conditioner from being produced or affected by the environment Deviations or laboratory deviations cause the actual operating power to exceed the control range, ensuring that the adjusted actual operating power is more accurate and improving the accuracy of the test results.

The beneficial effects of the invention

Brief description of the drawings

Description of the drawings

FIG. 1 is a schematic diagram of a terminal structure of a hardware operating environment involved in a solution of an embodiment of the present application;

2 is a schematic flowchart of a first embodiment of a method for controlling the intermediate capacity of an air conditioner according to the present application;

3 is a schematic flowchart of a second embodiment of a method for controlling the intermediate capacity of an air conditioner according to the present application;

FIG. 4 is a schematic diagram of the detailed flow of step S31 in FIG. 3;

5 is a schematic flowchart of a third embodiment of a method for controlling the intermediate capacity of an air conditioner according to the present application;

Fig. 6 is a schematic flowchart of a fourth embodiment of a method for controlling the intermediate capacity of an air conditioner according to the present application.

The realization, functional characteristics, and advantages of the purpose of this application will be further described in conjunction with the embodiments and with reference to the accompanying drawings.

Invention embodiment

Embodiments of the present invention

It should be understood that the specific embodiments described here are only used to explain the application, and not used to limit the application.

The main solution of the embodiment of the present application is: after the air conditioner enters the intermediate capacity test mode, the actual operating power of the air conditioner is obtained; the ratio of the actual operating power to the rated power of the intermediate capacity is not within the preset threshold range, and the air conditioner is adjusted The operating parameters of the refrigeration components of the air conditioner are used to adjust the actual operating power of the air conditioner; returning to the step of obtaining the actual operating power of the air conditioner.

As shown in FIG. 1, FIG. 1 is a schematic diagram of a terminal structure of a hardware operating environment involved in a solution of an embodiment of the present application. The terminal in the embodiment of the present application is an air conditioner, and the air conditioner is an inverter air conditioner.

As shown in FIG. 1, the terminal may include: a processor 1001, such as a CPU, a network interface 1004, a user interface 1003, a memory 1005, and a communication bus 1002. Among them, the communication bus 1002 is used to implement connection and communication between these components. The user interface 1003 may include a display screen (Display) and an input unit such as a keyboard (Keyboard), and the optional user interface 1003 may also include a standard wired interface and a wireless interface. The network interface 1004 may optionally include a standard wired interface and a wireless interface (such as a WI-FI interface). The memory 1005 may be a high-speed RAM memory, or a non-volatile memory (non-volatile memory), such as a magnetic disk memory. Optionally, the memory 1005 may also be a storage device independent of the aforementioned processor 1001.

Optionally, the terminal may also include a camera, an RF (Radio Frequency) circuit, a sensor, an audio circuit, a WiFi module, a positioning module, and so on. Among them, sensors such as temperature sensors, humidity sensors, wind speed sensors and so on. Specifically, the temperature sensor is used to detect indoor temperature, outdoor temperature, indoor heat exchanger temperature, etc., the humidity sensor is used to detect indoor humidity, outdoor humidity, etc., and the wind speed sensor is used to detect wind speed at the air outlet of the air conditioner, etc. , The sensor is connected to the processor 1001.

Those skilled in the art can understand that the terminal structure shown in FIG. 1 does not constitute a limitation on the terminal, and may include more or fewer components than shown in the figure, or combine some components, or arrange different components.

As shown with reference to FIG. 1, the memory 1005, which is a computer storage medium, may include an operating system, a network communication module, a user interface module, and a control program.

In the terminal shown in FIG. 1, the network interface 1004 is mainly used to connect to a back-end server and communicate with the back-end server; the user interface 1003 is mainly used to connect to a client (user side) to communicate with the client; and the processor 1001 can be used to call the control program stored in the memory 1005 and perform the following operations:

After the air conditioner enters the intermediate capacity test mode, obtain the actual operating power of the air conditioner;

If the ratio of the actual operating power to the rated power of the intermediate capacity is not within the preset threshold range, adjusting the operating parameters of the refrigeration components of the air conditioner to adjust the actual operating power of the air conditioner;

Return to the step of obtaining the actual operating power of the air conditioner.

Further, the processor 1001 may call a control program stored in the memory 1005, and also perform the following operations:

The operating frequency of the compressor of the air conditioner is adjusted.

Further, the processor 1001 may call a control program stored in the memory 1005, and also perform the following operations:

Acquiring the indoor heat exchanger temperature of the air conditioner;

The difference between the indoor heat exchanger temperature and the rated indoor heat exchanger temperature corresponding to the intermediate capacity is within a first preset difference range, and the operating frequency of the compressor of the air conditioner is adjusted.

Further, the processor 1001 may call a control program stored in the memory 1005, and also perform the following operations:

Obtain the exhaust temperature of the compressor of the air conditioner;

Determining the target refrigeration component according to the difference between the exhaust temperature and the rated exhaust temperature corresponding to the intermediate capacity, wherein the refrigeration component includes at least one of a regulating compressor and an electronic expansion valve;

Adjust the operating parameters of the target refrigeration component.

Further, the processor 1001 may call a control program stored in the memory 1005, and also perform the following operations:

If the difference between the exhaust temperature and the rated exhaust temperature corresponding to the intermediate capacity is greater than a first preset difference, it is determined that the target refrigeration component is an electronic expansion valve;

The difference between the exhaust temperature and the rated exhaust temperature corresponding to the intermediate capacity is less than a first preset difference, and it is determined that the target refrigeration component is the compressor.

Further, the processor 1001 may call a control program stored in the memory 1005, and also perform the following operations:

The target refrigeration component is a compressor, and the step of adjusting the target refrigeration component includes: reducing the operating frequency of the compressor.

Further, the processor 1001 may call a control program stored in the memory 1005, and also perform the following operations:

The difference between the exhaust temperature and the rated exhaust temperature corresponding to the intermediate capacity is less than a second preset threshold, and it is determined that the target refrigeration component is an electronic expansion valve;

If the difference between the exhaust temperature and the rated exhaust temperature corresponding to the intermediate capacity is greater than a second preset threshold, it is determined that the target refrigeration component is a compressor;

Wherein, the first preset threshold is greater than the second preset threshold.

Further, the processor 1001 may call a control program stored in the memory 1005, and also perform the following operations:

Reduce the opening of the electronic expansion valve; or,

Increase the operating frequency of the compressor.

Further, the processor 1001 may call a control program stored in the memory 1005, and also perform the following operations:

After the exit condition is met, exit the intermediate ability test mode.

Further, the processor 1001 may call a control program stored in the memory 1005, and also perform the following operations:

The ratio of the actual operating power to the rated power of the intermediate capacity is within the preset threshold range;

The running time of the intermediate ability test mode is greater than the preset time;

The ratio of the actual operating power to the rated power of the intermediate capacity is not within the preset threshold range;

A command to switch the operating mode was received.

Further, the processor 1001 may call a control program stored in the memory 1005, and also perform the following operations:

After the air conditioner enters the intermediate capacity test mode, it runs for a preset time according to the target operating parameters;

Get the current ambient temperature;

It is determined that the difference between the current ambient temperature and the target ambient temperature of the intermediate capacity is within a second preset difference range, and the step of collecting the operating voltage value and the operating current value of the air conditioner is performed.

2, this application provides a first embodiment of a method for controlling the intermediate capacity of an air conditioner. The method for controlling the intermediate capacity of an air conditioner includes the following steps:

Step S10, after the air conditioner enters the intermediate capacity test mode, obtain the actual operating power of the air conditioner;

Step S20, judging whether the ratio of the actual operating power to the rated power of the intermediate capacity is within a preset threshold range;

Step S30, if the ratio of the actual operating power to the intermediate capacity rated power is not within the preset threshold range, adjust the operating parameters of the refrigeration components of the air conditioner to adjust the actual operating power of the air conditioner;

Return to the step of obtaining the actual operating power of the air conditioner.

Similarly, if the ratio of the actual operating power to the rated power of the intermediate capacity is within the preset threshold range, return to the step of obtaining the actual operating power of the air conditioner.

The air conditioner described in this embodiment includes two working conditions of full capacity and intermediate capacity. In order to ensure that the air conditioner meets the national standard when operating at intermediate capacity, to prevent the air conditioner from operating outside the allowable deviation range of the national standard and failing to perform normal cooling, resulting in waste of resources. The air conditioner is provided with an intermediate capacity test mode to test whether each refrigerating component and the operating conditions of the air conditioner meet the requirements corresponding to the intermediate capacity. Since the air conditioner is affected by environmental parameters in different environments, the actual operating power may be different and there may be deviations. Therefore, in order to improve the test accuracy, this embodiment sets the air conditioner intermediate capacity test mode. After the air conditioner enters the intermediate capacity test mode According to the actual operating parameters of the air conditioner, the refrigeration components of the air conditioner are fine-tuned. After the air conditioner is fine-tuned, it is judged whether it meets the requirements of the national standard. In this way, the accuracy of the test is improved.

Specifically, after the air conditioner enters the intermediate capacity test mode, the operating voltage value U and the operating current value of the air conditioner are collected, and the actual operating power P of the air conditioner is calculated according to the operating voltage value U and the operating current value I, For example, P=U*I. Since the allowable power deviation range corresponding to the intermediate capacity is getting smaller and smaller, in order to improve the accuracy of the calculation of the actual operating power, this embodiment adopts P=U*Iin*Φin+U*Iout*Φout to calculate the actual Operating power, wherein the U is the operating voltage value of the air conditioner, the inside of I is the current value of the indoor unit, the inside of Φ is the power correction value of the indoor unit, the outside of I is the current value of the outdoor unit, and the outside of Φ is Outdoor unit power correction value, calculate the actual operating power of the air conditioner based on the corrected operating power of the indoor unit and the corrected operating power of the outdoor unit, and then determine whether the air conditioner meets the allowable deviation of the intermediate capacity according to the actual operating power and the rated power of the intermediate capacity If the value is met, the current operating parameters are maintained for a preset time interval, then the intermediate capacity test mode is exited, and the air conditioner is determined to pass the intermediate capacity test; if not, the cooling of the air conditioner is adjusted The operating parameters of the components are used to adjust the actual operating power of the air conditioner, and continue to obtain the actual operating power of the air conditioner after adjustment, and continue to detect whether the adjusted actual operating power of the air conditioner meets the operating deviation requirements of the intermediate capacity, If it is still not satisfied, continue to adjust. After the preset time interval according to this cycle, if it is not satisfied, exit the intermediate capacity test mode, and determine that the air conditioner fails the intermediate capacity test.

In this embodiment, the preset threshold value range is determined according to the allowable deviation value of the rated power of the air conditioner's intermediate capacity. For example, the preset threshold value range is (c, d), and the actual value after the air conditioner enters the intermediate capacity test mode is obtained. Operating power P, judge whether P/PM∈(c,d) is satisfied, if so, determine that the ratio of the actual operating power P to the intermediate capacity rated power PM is within the preset threshold range, and maintain the current operating state; if If it is not satisfied, it is determined that the ratio of the actual operating power P to the intermediate capacity rated power PM is not within the preset threshold range, and the operating parameters of the refrigeration components of the air conditioner are adjusted to adjust the actual operating power of the air conditioner . Wherein, the preset threshold range (c, d) can take a value (0.9-1, 1.-1.10), and the specific C can take 0.95, and d takes 1.05.

In order to further improve the accuracy of the intermediate capacity test of the air conditioner, after the air conditioner enters the intermediate capacity test, it is determined whether the actual operating power of the air conditioner is within the allowable deviation range of the intermediate capacity after the operation of the air conditioner is stable. The control method of the intermediate capacity of the air conditioner also includes:

After the air conditioner enters the intermediate capacity test mode, it runs for a preset time according to the target operating parameters;

Get the current ambient temperature;

It is determined that the difference between the current ambient temperature and the target ambient temperature of the intermediate capacity is within a second preset difference range, and the step of collecting the operating voltage value and the operating current value of the air conditioner is performed.

After the air conditioner enters the intermediate test mode, the air conditioner will obtain the current environment where the air conditioner is located after running for M minutes, such as 30 minutes, according to the target operating parameters corresponding to the preset intermediate capacity, such as target frequency, fan speed, electronic expansion valve opening, etc. Temperature, determine whether the air conditioner is operating stably according to the difference between the current ambient temperature and the target temperature of the intermediate capacity, if the difference between the current ambient temperature after the air conditioner has been running for M minutes and the target temperature of the intermediate capacity is within the second preset difference Within the value range, it is determined that the air conditioner is in a stable operating state. At this time, the operating voltage value and operating current value of the air conditioner can be collected, and then the actual operating power of the air conditioner can be calculated. Higher operating power accuracy. If the difference between the current ambient temperature after the air conditioner has been running for M minutes and the target temperature value of the intermediate capacity is not within the second preset difference range, it is determined that the air conditioner has not reached a stable operating state, and the interval is t minutes. Then re-acquire the current ambient temperature, continue to determine whether the difference between the current ambient temperature and the target ambient temperature of the intermediate capacity is within the second preset difference range, until the air conditioner is operating stably, execute the collection of the air conditioner The steps of the operating voltage value and operating current value.

Wherein, the current ambient temperature includes at least one of a current indoor ambient temperature T1 and a current outdoor ambient temperature T4, and the second preset difference range includes a second preset indoor temperature value difference range and a second preset Outdoor temperature difference range, the second preset indoor difference range is (-a, a), the second preset outdoor difference range is (-b, b), the target temperature corresponding to the intermediate capacity Including indoor environment target temperature T1s and outdoor environment target temperature T4s. In order to improve the accuracy of the stability judgment of the air conditioner and prevent misjudgment when one of the indoor unit or the outdoor unit is abnormal, the difference between the current indoor environment temperature T1 and the indoor environment target temperature T1s of the intermediate capacity in this embodiment Value T1-T1s ∈ (-a, a), and the difference between the current outdoor ambient temperature T4 and the outdoor ambient target temperature T4s corresponding to the intermediate capacity T4-T4s ∈ (-b, b), it is determined that the air conditioner is operating stably. Collect the operating voltage value and operating current value of the air conditioner, and calculate the actual operating power of the air conditioner.

It is understandable that the refrigeration components of the air conditioner include one or more of compressors, fans, heat exchangers, and electronic expansion valves. During the test, if the actual operating power of the air conditioner is not at the rated power corresponding to the intermediate capacity Within the operating deviation range, the actual operating power of the air conditioner is adjusted by adjusting the compressor operating frequency, fan speed, or electronic expansion valve opening, etc., so that the actual operating power is within the allowable deviation range. Specifically, if the actual If the operating power is too large, reduce the compressor operating frequency or increase the opening of the electronic expansion valve to reduce the actual operating power of the air conditioner. If the actual operating power is too small, increase or decrease the operating frequency of the compressor The opening degree of the electronic expansion valve is used to increase the actual operating power of the air conditioner. Wherein, the adjustment range is determined according to the deviation range of the actual operating power of the air conditioner when it is affected by the environment. After adjustment, if the actual operating power is within the operating deviation range of the rated power corresponding to the intermediate capacity, it will pass the intermediate capacity test; After adjustment, if the actual operating power is still not within the operating deviation range of the rated power corresponding to the intermediate capacity, the intermediate capacity test will not be passed.

In this embodiment, after the air conditioner enters the intermediate capacity test mode, the ratio of the actual operating power of the air conditioner to the rated power of the intermediate capacity is used to determine whether the actual operating power of the air conditioner is within the allowable deviation range of the intermediate capacity, and if not, adjust The operating parameters of the refrigeration components of the air conditioner are used to adjust the actual operating power of the air conditioner, so as to avoid deviations of the air conditioner due to production or environmental influences or laboratory deviations that cause the actual operating power to exceed the control range, and to ensure that the adjustment After the actual operating power is more accurate, the accuracy of the test results is improved.

The intermediate capacity control method provided in this application is applicable to various types of air conditioners, such as air conditioners whose refrigeration components include electronic expansion valves and air conditioners whose refrigeration components do not include electronic expansion valves. In the process of adjusting the refrigeration components of the air conditioner, first It is judged whether the air conditioner has an electronic expansion valve, if so, it is adjusted according to the adjustment program with an electronic expansion valve, and if there is no electronic expansion valve, it is adjusted according to the adjustment program without an electronic expansion valve.

Specifically, referring to FIG. 3, the present application provides a second embodiment of a method for controlling the intermediate capacity of an air conditioner. Based on the embodiment shown in FIG. 2, the air conditioner has no electronic expansion valve, and the air conditioner is adjusted The steps of the operating parameters of the refrigeration components include:

Step S31: Adjust the operating frequency of the compressor of the air conditioner to adjust the actual operating power of the air conditioner.

When there is no electronic expansion valve in the air conditioner, the refrigeration components of the air conditioner include a compressor, and the actual operating power of the air conditioner can be adjusted by adjusting the operating frequency of the compressor.

When P/PM is greater than the maximum threshold d of the preset threshold range, the actual operating power of the air conditioner is reduced by reducing the operating frequency of the compressor, wherein the operating frequency of the air conditioner compressor is reduced by ΔfrHz.

When P/PM is less than the minimum threshold c of the preset preset value range, the actual operating power of the air conditioner is increased by increasing the operating frequency of the compressor, wherein the operating frequency of the air conditioner compressor is increased by Δfr.

Further, referring to FIG. 4, in order to improve the adjustment effect and reduce unnecessary adjustment processes, in step S31 of this embodiment, the step of adjusting the operating frequency of the compressor of the air conditioner includes:

Step S311, acquiring the indoor heat exchanger temperature of the air conditioner;

Step S312: Determine whether the difference between the indoor heat exchanger temperature and the rated indoor heat exchanger temperature corresponding to the intermediate capacity is within a first preset difference range;

Step S313: If the difference between the indoor heat exchanger temperature and the rated indoor heat exchanger temperature corresponding to the intermediate capacity is within the first preset difference range, adjust the operating frequency of the compressor of the air conditioner.

If the difference between the indoor heat exchanger temperature T2 and the rated indoor heat exchanger temperature T2s corresponding to the intermediate capacity is not within the first preset difference range (-e, e), an alarm prompt is directly output to prompt The air conditioner does not pass the intermediate capacity test. Wherein, the first preset difference range (-e, e) takes a value (-1, 1).

The first preset difference range is the allowable deviation range of the indoor heat exchanger temperature based on the environment, production error, and experimental error during the heat exchange process of the air conditioner.

If it is calculated that the ratio of the actual operating power to the rated power of the intermediate capacity is not within the preset threshold range, first determine whether the difference between the temperature of the indoor heat exchanger and the temperature of the rated indoor heat exchanger corresponding to the intermediate capacity is too large, or If the difference is too large or too small, it means that the air conditioner is operating abnormally under this working condition, and the unqualified prompt is directly output to save the adjustment process.

If the difference between the temperature of the indoor heat exchanger and the temperature of the rated indoor heat exchanger corresponding to the intermediate capacity is within the first preset difference range, it means that the current deviation of the air conditioner is a normal deviation, which can be adjusted by adjusting the operating frequency of the compressor The actual operating power of the air conditioner.

In this embodiment, when the air conditioner has no electronic expansion valve, the actual operating power of the air conditioner is adjusted by adjusting the operating frequency of the compressor of the air conditioner, so as to realize the intermediate capacity test and adjustment of the air conditioner without the electronic expansion valve. Increase the scope of use.

5 again, the present application provides a third embodiment of a method for controlling the intermediate capacity of an air conditioner. When the air conditioner has an electronic expansion valve, when the air conditioner has an electronic expansion valve, that is, the air conditioner When the electronic expansion valve is used for throttling on the refrigeration cycle of the air conditioner, the refrigeration components of the air conditioner include a compressor and an electronic expansion valve. In this embodiment, the compressor and/or the electronic expansion valve can be adjusted to realize the actual performance of the air conditioner. To adjust the operating power, you can choose at least one of them to adjust the actual operating power of the air conditioner, or in order to improve the regulation efficiency and accuracy of the refrigeration components, you can choose one of them to adjust the air conditioner according to the discharge temperature of the compressor of the air conditioner. The actual operating power, such as:

The step of adjusting the operating parameters of the refrigeration component of the air conditioner includes:

Step S32, acquiring the exhaust temperature of the compressor of the air conditioner;

Step S33: Determine a target refrigeration component according to the difference between the exhaust temperature and the rated exhaust temperature corresponding to the intermediate capacity, where the refrigeration component includes at least one of a regulating compressor and an electronic expansion valve;

Step S34: Adjust the operating parameters of the target refrigeration component.

When the air conditioner includes multiple refrigerating components, the operating parameter of one of the refrigerating components can be adjusted to achieve the purpose of adjusting the actual operating power of the air conditioner. Among them, the target refrigeration component must meet at least one of the following conditions:

1. The current operating parameters of the refrigeration components meet the adjustment requirements. For example, the current electronic expansion valve can also be increased or decreased, and the increase or decrease will affect the normal operation of other refrigeration components.

2. Adjust the refrigeration components to achieve the best adjustment effect.

3. After the refrigeration components are adjusted, other linked refrigeration components will follow the changes, and the change range is the allowable range at this time.

In order to achieve the foregoing objective, the present embodiment specifically determines the target refrigeration component based on the discharge temperature of the compressor, and then adjusts the operating parameters of the target refrigeration component to adjust the actual operating power of the air conditioner.

The following is an example of how to specifically determine the target refrigeration component according to the compressor discharge temperature. Since the actual operating power is too large and the adjustment mode is too small, this embodiment lists two according to the ratio of the actual operating power to the intermediate capacity rated power. Different adjustment methods:

1. The ratio of the actual operating power to the rated power of the intermediate capacity is greater than the maximum threshold of the preset threshold range, and the target refrigeration component is determined according to the difference between the exhaust temperature and the rated exhaust temperature corresponding to the intermediate capacity The steps include:

If the difference between the exhaust temperature and the rated exhaust temperature corresponding to the intermediate capacity is greater than a first preset difference, it is determined that the target refrigeration component is an electronic expansion valve;

The difference between the exhaust temperature and the rated exhaust temperature corresponding to the intermediate capacity is less than a first preset difference, and it is determined that the target refrigeration component is the compressor.

That is, when the air conditioner has an electronic expansion valve, if the ratio of the actual operating power to the rated power of the intermediate capacity is greater than the maximum threshold of the preset threshold range, TP-TPM is greater than f, then the actual operating power is too large and needs to be adjusted down. The actual operating power of the air conditioner. If the difference between the exhaust temperature TP and the rated exhaust temperature TPM corresponding to the intermediate capacity is greater than the first preset difference f, the current exhaust temperature of the compressor is too high. At this time, if the operating frequency of the compressor is reduced , It will cause the compressor's discharge temperature to become higher and higher, and damage the compressor. Therefore, an electronic expansion valve is selected as the target refrigeration component. By increasing the opening of the electronic expansion valve, the refrigeration cycle is reduced. Load, in order to achieve the purpose of reducing the actual operating power of the air conditioner. Specifically, the opening degree of the electronic expansion valve L is increased by ΔL step (increasing the upper limit value of the opening degree LMAX) to control the exhaust gas temperature so that TP-TPM ∈ (-g, g), where (- g, g) are in the range of (-f, f). If the difference between the exhaust temperature TP and the rated exhaust temperature TPM corresponding to the intermediate capacity is less than the first preset difference f, the current exhaust temperature of the compressor can increase the space. At this time, the compressor can be reduced by The operating frequency is used to increase the exhaust temperature of the compressor and at the same time achieve the purpose of reducing the actual operating power of the air conditioner. Specifically, the operating frequency of the compressor is reduced by ΔfrHz, ΔfrHz=1hz, f=2, g=1, ΔL=8 steps, and the upper limit of opening is increased by 16 steps.

It is understandable that if the difference between the exhaust temperature TP and the rated exhaust temperature TPM corresponding to the intermediate capacity is less than the first preset difference f, and T2-T2S is less than -e, the operating frequency ΔfrHz of the compressor is reduced , Where e=1.

2) The ratio of the actual operating power to the intermediate capacity rated power is less than the minimum value in the preset threshold range, and the operating power target is determined according to the difference between the exhaust gas temperature and the intermediate capacity rated exhaust temperature The steps for refrigeration components include:

The difference between the exhaust temperature and the rated exhaust temperature corresponding to the intermediate capacity is less than a second preset threshold, and it is determined that the target refrigeration component is an electronic expansion valve;

If the difference between the exhaust temperature and the rated exhaust temperature corresponding to the intermediate capacity is greater than a second preset threshold, it is determined that the target refrigeration component is a compressor;

Wherein, the first preset threshold is greater than the second preset threshold.

That is, when the air conditioner has an electronic expansion valve, if the ratio of the actual operating power to the rated power of the intermediate capacity is less than the maximum threshold of the preset threshold range TP-TPM is less than -f, it means that the actual operating power is too small and needs to be increased. The actual operating power of the air conditioner. If the difference between the exhaust temperature TP and the rated exhaust temperature TPM corresponding to the intermediate capacity is less than the first preset difference -f, the current exhaust temperature of the compressor is too low. At this time, if the compressor is increased The operating frequency will cause the compressor's discharge temperature to become smaller and smaller, and the compressor cannot operate normally. Therefore, an electronic expansion valve is selected as the target refrigeration component, and the opening of the electronic expansion valve is reduced to increase the refrigeration Circulate the load of the loop to achieve the purpose of increasing the actual operating power of the air conditioner. Specifically, the opening degree of the electronic expansion valve L is reduced by ΔL steps (the lower limit of the opening degree is reduced as LLIN) to control the exhaust gas temperature so that TP-TPM ∈ (-g, g), where The (-g, g) is in the range of (-f, f). If the difference between the exhaust temperature TP and the rated exhaust temperature TPM corresponding to the intermediate capacity is greater than the first preset difference -f, there is still room for adjusting the exhaust temperature of the current compressor. The operating frequency of the large compressor is used to reduce the exhaust temperature of the compressor and at the same time achieve the purpose of increasing the actual operating power of the air conditioner. Specifically, the operating frequency of the compressor is increased by ΔfrHz.

It is understandable that if the difference between the exhaust temperature TP and the rated exhaust temperature TPM corresponding to the intermediate capacity is greater than the first preset difference -f, and T2-T2S is greater than e, the operating frequency ΔfrHz of the compressor is reduced .

6, the present application provides a fourth embodiment of a method for controlling the intermediate capacity of an air conditioner. After the step of adjusting the operating parameters of the refrigeration component of the air conditioner, the method further includes:

Step S40, after meeting the exit condition, exit the intermediate ability test mode.

Wherein, the determination method that satisfies the exit condition includes but is not limited to one or more of the following:

The ratio of the actual operating power to the rated power of the intermediate capacity is within the preset threshold range;

The running time of the intermediate ability test mode is greater than the preset time;

The ratio of the actual operating power to the rated power of the intermediate capacity is not within the preset threshold range;

A command to switch the operating mode was received.

After the air conditioner enters the intermediate capacity test, if the test is qualified, it will automatically exit the test mode, or if the test is qualified after adjustment, it will automatically exit the test mode. If the actual operating power and the intermediate capacity rated power are detected If the ratio is within the preset threshold value range, it indicates that the intermediate capacity test of the air conditioner is qualified. At this time, the intermediate capacity test can be exited to facilitate the air conditioner to leave the factory or work normally.

It is understandable that the duration of the intermediate capacity test can also be set as a preset duration. The air conditioner starts timing from entering the intermediate capacity test mode, and when the air conditioner operates in the intermediate capacity test mode, the duration reaches the preset duration. Set the duration and exit the intermediate ability test mode, wherein if it is detected that the ratio of the actual operating power to the intermediate ability rated power is within the preset threshold range before exiting the intermediate ability test mode, the output test passes ; If it is detected that the ratio of the actual operating power to the rated power of the intermediate capacity is still not within the preset threshold range, the output test is different. Wherein, the preset duration may be 15min-60min.

Alternatively, when the air conditioner is operating in the intermediate capacity test mode, upon receiving a switching operation mode instruction, it first exits the intermediate capacity test mode, and then switches to the target operation mode corresponding to the switching operation mode instruction, and uses the target operation mode run. Wherein, the switching mode instruction can be automatically triggered based on current environmental parameters. For example, when the current environment is bad, when the intermediate capacity test of the air conditioner is run under the current environment, there is a big difference from the actual operating capacity of the air conditioner, resulting in inaccurate test results. The operation mode is automatically switched at time, and the switching mode instruction can also be manually triggered by the user.

In this embodiment, when the current operating state of the air conditioner satisfies the exit condition, the intermediate capacity test mode is exited, the intermediate test mode is automatically ended, and automated testing is realized.

The above are only optional embodiments of this application, and do not limit the scope of this application. Any equivalent structure or equivalent process transformation made using the content of the description and drawings of this application, or directly or indirectly applied to other related technologies In the same way, all fields are included in the scope of patent protection of this application.

Claims (17)

1. A method for controlling the intermediate capacity of an air conditioner, wherein the method for controlling the intermediate capacity of an air conditioner includes the following steps:

   After the air conditioner enters the intermediate capacity test mode, obtain the actual operating power of the air conditioner;

   If the ratio of the actual operating power to the rated power of the intermediate capacity is not within the preset threshold range, adjusting the operating parameters of the refrigeration components of the air conditioner to adjust the actual operating power of the air conditioner;

   Return to the step of obtaining the actual operating power of the air conditioner.
2. The method for controlling the intermediate capacity of an air conditioner according to claim 1, wherein the refrigeration components of the air conditioner include one or more of a compressor, a fan, a heat exchanger, and an electronic expansion valve.
3. The method for controlling the intermediate capacity of an air conditioner according to claim 1, wherein the air conditioner has no electronic expansion valve, and the step of adjusting the operating parameters of the refrigeration components of the air conditioner comprises:

   The operating frequency of the compressor of the air conditioner is adjusted.
4. The method for controlling the intermediate capacity of an air conditioner according to claim 3, wherein the step of adjusting the operating frequency of the compressor of the air conditioner comprises:

   If the ratio of the actual operating power to the rated power of the intermediate capacity is greater than the maximum threshold of the preset threshold range, the operating frequency of the compressor is reduced;

   The ratio of the actual operating power to the rated power of the intermediate capacity is less than the minimum threshold of the preset threshold range, and the operating frequency of the compressor is increased.
5. The method for controlling the intermediate capacity of an air conditioner according to claim 3, wherein the step of adjusting the operating frequency of the compressor of the air conditioner comprises:

   Acquiring the indoor heat exchanger temperature of the air conditioner;

   The difference between the indoor heat exchanger temperature and the rated indoor heat exchanger temperature corresponding to the intermediate capacity is within a first preset difference range, and the operating frequency of the compressor of the air conditioner is adjusted.
6. The method for controlling the intermediate capacity of an air conditioner according to claim 1, wherein, when the air conditioner has an electronic expansion valve, the step of adjusting the operating parameters of the refrigeration components of the air conditioner comprises:

   Obtain the exhaust temperature of the compressor of the air conditioner;

   Determining the target refrigeration component according to the difference between the exhaust temperature and the rated exhaust temperature corresponding to the intermediate capacity, wherein the refrigeration component includes at least one of a regulating compressor and an electronic expansion valve;

   Adjust the operating parameters of the target refrigeration component.
7. The method for controlling the intermediate capacity of an air conditioner according to claim 6, wherein the ratio of the actual operating power to the intermediate capacity rated power is greater than the maximum threshold of the preset threshold range, and the ratio of the actual operating power to the intermediate capacity is greater than the The steps of determining the target refrigeration component by the difference of the rated exhaust temperature corresponding to the capacity include:

   If the difference between the exhaust temperature and the rated exhaust temperature corresponding to the intermediate capacity is greater than a first preset difference, it is determined that the target refrigeration component is an electronic expansion valve;

   The difference between the exhaust temperature and the rated exhaust temperature corresponding to the intermediate capacity is less than a first preset difference, and it is determined that the target refrigeration component is the compressor.
8. 8. The method for controlling the intermediate capacity of an air conditioner according to claim 7, wherein the target refrigeration component is an electronic expansion valve, and the step of adjusting the target refrigeration component includes: increasing the opening degree of the electronic expansion valve;

   The target refrigeration component is a compressor, and the step of adjusting the target refrigeration component includes: reducing the operating frequency of the compressor.
9. The method for controlling the intermediate capacity of an air conditioner according to claim 5, wherein the ratio of the actual operating power to the rated power of the intermediate capacity is less than the minimum value in the preset threshold range, and the ratio of the actual operating power to the rated power of the intermediate capacity is smaller than the The steps of determining the target refrigeration component of the operating power by the difference between the intermediate capacity and rated exhaust temperature include:

   The difference between the exhaust temperature and the rated exhaust temperature corresponding to the intermediate capacity is less than a second preset threshold, and it is determined that the target refrigeration component is an electronic expansion valve;

   The difference between the exhaust temperature and the rated exhaust temperature corresponding to the intermediate capacity is greater than a second preset threshold, and it is determined that the target refrigeration component is a compressor;

   Wherein, the first preset threshold is greater than the second preset threshold.
10. 9. The method for controlling the intermediate capacity of an air conditioner according to claim 9, wherein the target refrigeration component is an electronic expansion valve, and the step of adjusting the operating parameters of the target refrigeration component includes:

    Reducing the opening degree of the electronic expansion valve;

    The target refrigeration component is a compressor, and the step of adjusting the operating parameter of the target refrigeration component includes: increasing the operating frequency of the compressor.
11. The method for controlling the intermediate capacity of an air conditioner according to claim 1, wherein after the step of adjusting the operating parameters of the refrigeration component of the air conditioner, the method further comprises:

    After the exit condition is met, exit the intermediate ability test mode.
12. The method for controlling the intermediate capacity of an air conditioner according to claim 11, wherein the determination method that satisfies the exit condition includes at least one of the following:

    The ratio of the actual operating power to the rated power of the intermediate capacity is within the preset threshold range;

    The running time of the intermediate ability test mode is greater than the preset time;

    The ratio of the actual operating power to the rated power of the intermediate capacity is not within the preset threshold range;

    A command to switch the operating mode was received.
13. The method for controlling the intermediate capacity of an air conditioner according to claim 1, wherein the method for controlling the intermediate capacity of the air conditioner further comprises:

    After the air conditioner enters the intermediate capacity test mode, it runs for a preset time according to the target operating parameters;

    Get the current ambient temperature;

    It is determined that the difference between the current ambient temperature and the target ambient temperature of the intermediate capacity is within a second preset difference range, and the step of collecting the operating voltage value and the operating current value of the air conditioner is performed.
14. The method for controlling the intermediate capacity of an air conditioner according to claim 1, wherein the step of obtaining the actual operating power of the air conditioner comprises:

    Obtain the operating power of the indoor unit and the operating power of the outdoor unit;

    The actual operating power of the air conditioner is calculated according to the operating power of the indoor unit and the operating power of the outdoor unit.
15. The method for controlling the intermediate capacity of an air conditioner according to claim 14, wherein the step of calculating the actual operating power of the air conditioner based on the operating power of the indoor unit and the operating power of the outdoor unit comprises:

    Using an indoor unit power correction value to correct the operating power of the indoor unit, and using an outdoor unit power correction value to correct the operating power of the outdoor unit;

    The actual operating power of the air conditioner is calculated according to the corrected operating power of the indoor unit and the corrected operating power of the outdoor unit.
16. An air conditioner, wherein the air conditioner includes a memory, a processor, and a control program stored in the memory and capable of running on the processor, and the control program is executed by the processor and realizes The following steps:

    After the air conditioner enters the intermediate capacity test mode, obtain the actual operating power of the air conditioner;

    If the ratio of the actual operating power to the rated power of the intermediate capacity is not within the preset threshold range, adjusting the operating parameters of the refrigeration components of the air conditioner to adjust the actual operating power of the air conditioner;

    Return to the step of obtaining the actual operating power of the air conditioner.
17. A storage medium, wherein a control program is stored on the storage medium, and the control program is executed by a processor and implements the following steps:

    After the air conditioner enters the intermediate capacity test mode, obtain the actual operating power of the air conditioner;

    If the ratio of the actual operating power to the rated power of the intermediate capacity is not within the preset threshold range, adjusting the operating parameters of the refrigeration components of the air conditioner to adjust the actual operating power of the air conditioner;

    Return to the step of obtaining the actual operating power of the air conditioner.

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