CN118066664A

CN118066664A - Air conditioner control method and device, air conditioner and computer equipment

Info

Publication number: CN118066664A
Application number: CN202410329209.6A
Authority: CN
Inventors: 植雄智; 杨梅; 江标; 段欠丽
Original assignee: Gree Green Refrigeration Technology Center Co Ltd of Zhuhai
Current assignee: Gree Green Refrigeration Technology Center Co Ltd of Zhuhai
Priority date: 2024-03-21
Filing date: 2024-03-21
Publication date: 2024-05-24

Abstract

The application relates to an air conditioner control method, an air conditioner, computer equipment, a computer readable storage medium and a computer program product. The electronic expansion valve is used for adjusting the exhaust temperature of the refrigerant of the air conditioner. Different target starting modes are determined according to different dead times of the compressor, and the electronic expansion valve is controlled based on the different target starting modes, so that the electronic expansion valve can be flexibly controlled according to actual conditions in the air conditioner starting process, the adjusting process of the electronic expansion valve is smooth and accurate, and the applicability of the air conditioner is improved.

Description

Air conditioner control method and device, air conditioner and computer equipment

Technical Field

The present application relates to the field of air conditioning technology, and in particular, to an air conditioning control method, an apparatus, an air conditioner, a computer device, a computer readable storage medium, and a computer program product.

Background

In operation of an air conditioning product, an electronic expansion valve is used as a throttling element in a compression refrigeration system, typically to depressurize a high pressure refrigerant liquid from a condenser to a low pressure, low temperature refrigerant and into an evaporator for evaporation to absorb heat. The control of the electronic expansion valve is generally related to the exhaust temperature of the refrigerant, and the opening and closing (opening) of the electronic expansion valve is controlled to control the exhaust temperature, so that the air conditioner always operates in a relatively high-capacity and energy-efficient state. In actual control, the opening degree of the electronic expansion valve is also adjusted by exhaust temperature feedback when the electronic expansion valve is controlled.

However, when the electronic expansion valve is controlled in this way, certain hysteresis exists, which results in inaccurate control of the electronic expansion valve. For example, when the compressor is kept still for a long time and then is operated, the exhaust temperature of the refrigerant in the air conditioner rises relatively slowly, and at the moment, the electronic expansion valve is controlled to be turned down by mistake, so that the working effect of the air conditioner is affected, and the working capacity and applicability of the air conditioner in the starting stage are affected. Therefore, there is still room for improvement in the applicability and the working capacity of the current air conditioner in operation.

Disclosure of Invention

In view of the foregoing, it is desirable to provide an air conditioner control method, an apparatus, an air conditioner, a computer device, a computer readable storage medium, and a computer program product that can improve the applicability of an air conditioner.

In a first aspect, the present application provides an air conditioner control method, the method including:

acquiring working data of a compressor and exhaust temperature of a refrigerant, wherein the compressor is used for compressing the refrigerant in an air conditioner;

Determining a target starting mode from a plurality of starting modes according to the working data of the compressor and the magnitude of a preset dead time value;

Controlling the electronic expansion valve according to the target starting mode and the exhaust temperature of the refrigerant; the electronic expansion valve is used for adjusting the exhaust temperature of the refrigerant of the air conditioner.

In one embodiment, before the electronic expansion valve is controlled according to the target start-up mode and the exhaust temperature of the refrigerant, the method further includes:

judging whether the exhaust temperature is greater than a target exhaust temperature;

If yes, adjusting the electronic expansion valve according to the magnitude relation between the target exhaust temperature and the exhaust temperature;

and if not, executing the control of the electronic expansion valve according to the target starting mode and the exhaust temperature of the refrigerant.

In one embodiment, after the determining whether the exhaust temperature is greater than the target exhaust temperature, before the controlling the electronic expansion valve according to the target start-up mode and the exhaust temperature of the refrigerant, the method further includes:

if the exhaust temperature is less than or equal to the target exhaust temperature, judging whether the working state of the compressor is stable according to the working data of the compressor;

If not, executing the regulation of the electronic expansion valve according to the magnitude relation between the target exhaust temperature and the exhaust temperature;

If yes, executing the control of the electronic expansion valve according to the target starting mode and the exhaust temperature of the refrigerant.

In one embodiment, the controlling the electronic expansion valve according to the target start-up mode and the exhaust temperature of the refrigerant includes:

calculating the exhaust change rate of the refrigerant based on the exhaust temperature of the refrigerant;

and controlling the electronic expansion valve according to the exhaust change threshold value corresponding to the target starting mode.

In one embodiment, the target start mode includes a first start mode, and the exhaust change threshold corresponding to the first start mode includes a first threshold and a second threshold; the controlling the electronic expansion valve according to the exhaust change threshold corresponding to the exhaust change rate and the target starting mode includes:

And adjusting the opening degree of the electronic expansion valve according to the magnitude relation among the exhaust change rate, the first threshold value and the second threshold value.

In one embodiment, the adjusting the opening of the electronic expansion valve according to the magnitude relation among the exhaust gas change rate, the first threshold value and the second threshold value includes:

When the exhaust gas change rate is smaller than or equal to the first threshold value, adjusting the electronic expansion valve according to the magnitude relation between the target exhaust gas temperature and the exhaust gas temperature;

When the exhaust gas change rate is greater than the first threshold value and less than or equal to the second threshold value, prohibiting the opening degree of the electronic expansion valve from becoming smaller;

And when the schedule change rate is larger than the second threshold value, controlling the opening degree of the electronic expansion valve to increase by a first preset step number.

In one embodiment, the target start mode includes a second start mode, and the exhaust change threshold corresponding to the second start mode includes a third threshold and a fourth threshold; the controlling the electronic expansion valve according to the exhaust change threshold corresponding to the exhaust change rate and the target starting mode includes:

and adjusting the opening degree of the electronic expansion valve according to the magnitude relation among the exhaust change rate, the third threshold value and the fourth threshold value.

In one embodiment, the adjusting the opening of the electronic expansion valve according to the magnitude relation among the exhaust gas change rate, the third threshold value and the fourth threshold value includes:

When the exhaust gas change rate is less than or equal to the third threshold value, adjusting the electronic expansion valve according to the magnitude relation between the target exhaust gas temperature and the exhaust gas temperature;

When the exhaust gas change rate is greater than the third threshold value and less than or equal to the fourth threshold value, prohibiting the opening degree of the electronic expansion valve from becoming smaller;

and when the schedule change rate is larger than the fourth threshold value, controlling the opening degree of the electronic expansion valve to increase by a second preset step number.

In one embodiment, before determining the target start-up mode from the plurality of start-up modes according to the compressor operation data and the magnitude of the preset dead time value, the method further includes:

Acquiring the ambient temperature of the air conditioner;

and controlling the initial opening degree of the electronic expansion valve according to the ambient temperature and the working data of the compressor.

In a second aspect, the present application also provides an air conditioner control device, including:

the detection module is used for acquiring working data of a compressor and exhaust temperature of the refrigerant, and the compressor is used for compressing the refrigerant in the air conditioner;

The analysis module is used for determining a target starting mode from a plurality of starting modes according to the working data of the compressor and the magnitude of a preset dead time value;

The control module is used for controlling the electronic expansion valve according to the target starting mode and the exhaust temperature of the refrigerant; the electronic expansion valve is used for adjusting the exhaust temperature of the refrigerant of the air conditioner.

In a third aspect, the present application further provides an air conditioner, where the air conditioner includes a compressor, a heat exchanger, an electronic expansion valve, and a controller, the compressor, the heat exchanger, and the electronic expansion valve are all connected to the controller, the compressor and the electronic expansion valve are connected to the heat exchanger, the compressor is used for compressing a refrigerant, the electronic expansion valve is used for adjusting an exhaust temperature of the refrigerant, and the controller is used for implementing the air conditioner control method according to each embodiment.

In a fourth aspect, the present application also provides a computer device comprising a memory and a processor, the memory storing a computer program, the processor implementing the following steps when executing the computer program:

In a fifth aspect, the present application also provides a computer readable storage medium having stored thereon a computer program which when executed by a processor performs the steps of:

In a sixth aspect, the application also provides a computer program product comprising a computer program which, when executed by a processor, performs the steps of:

The air conditioner control method, the air conditioner control device, the air conditioner, the computer equipment, the computer readable storage medium and the computer program product comprise the steps of obtaining the working data of the compressor and the exhaust temperature of the refrigerant, determining a target starting mode from a plurality of starting modes according to the working data of the compressor and the magnitude of a preset dead time value, and controlling the electronic expansion valve according to the target starting mode and the exhaust temperature of the refrigerant. The electronic expansion valve is used for adjusting the exhaust temperature of the refrigerant of the air conditioner. Different target starting modes are determined according to different dead times of the compressor, and the electronic expansion valve is controlled based on the different target starting modes, so that the electronic expansion valve can be flexibly controlled according to actual conditions in the air conditioner starting process, the adjusting process of the electronic expansion valve is smooth and accurate, and the applicability of the air conditioner is improved.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments or the conventional techniques of the present application, the drawings required for the descriptions of the embodiments or the conventional techniques will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present application, and other drawings may be obtained according to the drawings without inventive effort for those skilled in the art.

FIG. 1 is a diagram of an application environment of a hollow-core control method according to an embodiment;

FIG. 2 is a flow chart of a method of controlling hollow fiber in one embodiment;

FIG. 3 is a flow chart of a method for controlling hollow fiber in another embodiment;

FIG. 4 is a flow chart of a method for controlling hollow modulator according to another embodiment;

FIG. 5 is a flow chart of a method of controlling hollow fibers according to yet another embodiment;

FIG. 6 is a flow chart illustrating a step of adjusting the opening of the electronic expansion valve according to the exhaust gas change rate, the first threshold and the second threshold in one embodiment;

FIG. 7 is a flow chart illustrating a step of adjusting the opening of the electronic expansion valve according to the magnitude relation among the exhaust gas change rate, the third threshold and the fourth threshold in one embodiment;

FIG. 8 is a flow chart of a method for controlling hollow modulator according to yet another embodiment;

FIG. 9 is a block diagram of a hollow-core control device according to one embodiment;

Fig. 10 is an internal structural view of a computer device in one embodiment.

Detailed Description

The present application will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present application more apparent. Embodiments of the application are illustrated in the drawings, but the application may be embodied in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the application.

It will be understood that the terms first, second, etc. as used herein may be used to describe various elements, but these elements are not limited by these terms. These terms are only used to distinguish one element from another element. For example, a first resistance may be referred to as a second resistance, and similarly, a second resistance may be referred to as a first resistance, without departing from the scope of the application. Both the first resistor and the second resistor are resistors, but they are not the same resistor.

It is to be understood that in the following embodiments, "connected" is understood to mean "electrically connected", "communicatively connected", etc., if the connected circuits, modules, units, etc., have electrical or data transfer between them.

It is understood that "at least one" means one or more and "a plurality" means two or more. "at least part of an element" means part or all of the element.

As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and/or "comprising," and/or the like, specify the presence of stated features, integers, steps, operations, elements, components, or groups thereof, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, or groups thereof. Also, the term "and/or" as used in this specification includes any and all combinations of the associated listed items.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the description of the application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.

The air conditioner control method provided by the embodiment of the application can be applied to an exemplary application environment shown in fig. 1. In one embodiment, the application provides an air conditioner, and the air conditioner is used as an application environment of the air conditioner control method. As shown in fig. 1, the air conditioner includes a compressor 102, a heat exchanger 104, an electronic expansion valve 106, and a controller (the controller is not shown in fig. 1), wherein the compressor 102, the heat exchanger 104, and the electronic expansion valve 106 are all connected to the controller, and the compressor 102 and the electronic expansion valve 106 are connected to the heat exchanger 104. The compressor 102 is used for compressing the refrigerant, the electronic expansion valve 106 is used for adjusting the exhaust temperature of the refrigerant, and the controller is used for realizing the air conditioning control method described in each embodiment of the present application.

Further, the heat exchanger 104 includes a condenser and an evaporator. The specific working flow of the air conditioner is as follows: the evaporator evaporates the refrigerant from liquid into gas and absorbs heat. The compressor 102 compresses a gaseous refrigerant, compresses a low-pressure gas into a high-pressure gas, and transmits the compressed gaseous refrigerant to the condenser. The condenser condenses the gaseous refrigerant into a liquid refrigerant, releases heat, and outputs the high-pressure liquid refrigerant generated after the heat release to the electronic expansion valve 106. The electronic expansion valve 106 is a throttle element capable of converting a high-pressure liquid refrigerant into a low-pressure liquid refrigerant. The evaporator is mainly used for reducing the pressure of the refrigerant, ensuring that the temperature of the refrigerant is in a temperature range capable of absorbing heat from air, and ensuring that the output refrigerant can smoothly finish the subsequent evaporation process in the evaporator.

During operation of the air conditioner, the controller controls the electronic expansion valve 106, the condenser, the evaporator, and the compressor 102, respectively, so that the above-described flow can be cyclically performed until the air conditioner stops operating. Among them, the control of the electronic expansion valve 106 is particularly important, and the exhaust temperature of the refrigerant is further controlled by controlling the electronic expansion valve 106. If the exhaust temperature of the refrigerant can be maintained in a proper range, the working efficiency of the air conditioner can be maintained at a higher level, and the energy efficiency of the air conditioner is improved.

However, when the air conditioner is suddenly started in a long-time non-working state, the compressor 102 starts to run after standing for a long time, and the change rate of the exhaust temperature of the refrigerant is relatively slow, at this time, if the traditional mode of controlling the electronic expansion valve 106 according to the exhaust temperature is adopted, the electronic expansion valve 106 is turned down by mistake due to obvious hysteresis quality of the change of the exhaust temperature, so that the working efficiency of the air conditioner is greatly fluctuated, and meanwhile, the use experience of a user is affected. The air conditioner control method adopted by the application can consider the starting condition, adjust the control of the electronic expansion valve 106, and ensure the working capacity and applicability of the air conditioner in the starting stage.

The air conditioner may be a variable frequency air conditioner or a fixed frequency air conditioner, and the specific model and parameters are not limited. Correspondingly, the type and parameters of the controller, the heat exchanger 104, the compressor 102, and the electronic expansion valve 106 are not limited. Illustratively, the controller may be a main control chip within the air conditioner and the compressor 102 may be a scroll compressor 102 or a rotor compressor 102.

In an exemplary embodiment, as shown in fig. 2, an air conditioner control method is provided, and an example of application of the method to the controller in fig. 1 is described, including the following steps 202 to 206. Wherein:

Step 202, obtaining compressor working data and exhaust temperature of refrigerant.

The compressor is used for compressing the refrigerant in the air conditioner, and the working process of the compressor is described above and will not be described herein. The compressor operation data may include a work log of the compressor, such as data describing whether the compressor is started, a start-up period, and a start-up frequency. The exhaust temperature of the refrigerant is the temperature when the refrigerant is compressed and discharged to the compressor port, and is mainly influenced by the opening degree of the electronic expansion valve.

Specifically, the controller may be connected to the compressor and monitor the whole refrigerant flow circuit to obtain the working data of the compressor and the exhaust temperature of the refrigerant, or may be provided with a sensor for detecting the temperature of the refrigerant in the refrigerant flow circuit, and obtain the exhaust temperature of the refrigerant through the sensor. The controller may be connected to the memory, and the working conditions of the air conditioner, such as a working log of the compressor, are recorded in the memory, and the controller obtains working data of the compressor through the memory.

Step 204, determining a target starting mode from a plurality of starting modes according to the compressor working data and the magnitude of the preset dead time value.

The preset dead time value is a set time length, and if the compressor is not started within the set time length, the compressor can be judged to be in a non-started state for a long time. If the compressor is started within the set time length, the compressor can be judged to be started in a short period of time and not to be in a non-started state for a long time. In contrast, different starting modes are corresponding to different states of the compressor.

Specifically, the controller may determine a state in which the compressor is located, for example, a long-time non-start state, by comparing the compressor operation data with a preset dead time value. And further determining a corresponding starting mode, and marking the corresponding starting mode as a target starting mode.

For example, the preset dead time value may be set to one week or 90 days, and the specific time length may be freely selected and adjusted according to the application scenario and the power consumption of the air conditioner.

And 206, controlling the electronic expansion valve according to the target starting mode and the exhaust temperature of the refrigerant.

The electronic expansion valve is used for adjusting the exhaust temperature of the refrigerant of the air conditioner, and the working process of the electronic expansion valve in the air conditioner is described above and will not be described herein. Specifically, after the controller determines the target starting mode, the controller controls the electronic expansion valve according to the target starting mode and the exhaust temperature of the refrigerant, including but not limited to controlling the allowable opening range of the electronic expansion valve, controlling the opening of the electronic expansion valve to reach a certain value, and controlling the opening of the electronic expansion valve to change a certain value.

The air conditioner control method comprises the steps of obtaining compressor working data and the exhaust temperature of a refrigerant, determining a target starting mode from a plurality of starting modes according to the compressor working data and the magnitude of a preset dead time value, and controlling the electronic expansion valve according to the target starting mode and the exhaust temperature of the refrigerant. The electronic expansion valve is used for adjusting the exhaust temperature of the refrigerant of the air conditioner. Different target starting modes are determined according to different dead times of the compressor, and the electronic expansion valve is controlled based on the different target starting modes, so that the electronic expansion valve can be flexibly controlled according to actual conditions in the air conditioner starting process, the adjusting process of the electronic expansion valve is smooth and accurate, and the applicability of the air conditioner is improved.

In an exemplary embodiment, as shown in fig. 3, the air conditioner control method further includes steps 302 to 304 before performing step 206. Wherein:

step 302, it is determined whether the exhaust temperature is greater than a target exhaust temperature.

The target exhaust temperature is the exhaust temperature of the set refrigerant, and is usually related to the working state of the air conditioner, when the working parameters of the air conditioner are set by a user, the air conditioner can adaptively adjust the target exhaust temperature, so that the air conditioner works stably and efficiently, and the user requirements are met.

If the exhaust temperature is greater than the target exhaust temperature, step 304 is performed to adjust the electronic expansion valve according to the magnitude relationship between the target exhaust temperature and the exhaust temperature.

Specifically, when the discharge temperature is greater than the target discharge temperature, it is generally meant that the compressor is already in a normal operating state, and the operating parameters of the air conditioner have satisfied the needs of the user. At this time, the electronic expansion valve is adjusted only according to the magnitude relation between the target exhaust temperature and the exhaust temperature of the refrigerant, so that the exhaust temperature of the refrigerant is matched with the target exhaust temperature.

If the exhaust temperature is not greater than the target exhaust temperature, the controller needs to control the electronic expansion valve according to the target start mode, specifically, step 206 is executed to control the electronic expansion valve according to the target start mode and the exhaust temperature of the refrigerant.

In this embodiment, through the judgement to exhaust temperature, further accurate air conditioner's operating condition to more accurate definite control mode of being favorable to accurate control electronic expansion valve, promotes air conditioner's work efficiency.

In an exemplary embodiment, as shown in fig. 4, after step 302, before step 206, the air conditioner control method further includes step 322: and if the exhaust temperature is less than or equal to the target exhaust temperature, judging whether the working state of the compressor is stable or not according to the working data of the compressor.

Specifically, when the air conditioner is a variable frequency air conditioner, the controller can also judge whether the working state of the compressor is stable according to the working data of the compressor. The controller obtains the compressor frequency in the compressor work data and calculates a compressor frequency variation value within a certain time. The certain time may be a set compressor stability determination time, for example 10 minutes or other set time value. The controller calculates a compressor frequency change value, and determines whether the working state of the compressor is stable by judging the magnitude of the compressor frequency change value. Illustratively, when the compressor frequency variation value is 0, the controller may determine that the operating state of the compressor is stable. When the frequency variation value of the compressor is not 0, the controller can determine that the working state of the compressor is unstable.

Further, if the working state of the compressor is unstable, the exhaust temperature may change along with the frequency change of the compressor, so that the relationship between the exhaust temperature and the electronic expansion valve cannot be accurately reflected, and the control is not performed in the target starting mode. Step 304 is performed to adjust the electronic expansion valve based on the magnitude relationship between the target exhaust temperature and the exhaust temperature.

If the working state of the compressor is stable, the compressor can be regarded as the working state of the air conditioner to be stable, the influence between the exhaust temperature and the electronic expansion valve is stable at the moment, and the electronic expansion valve can be controlled in a determined target starting mode. Step 206 is executed to control the electronic expansion valve according to the target start-up mode and the discharge temperature of the refrigerant.

In this embodiment, considering the influence of the frequency of the compressor in the variable frequency air conditioner on the exhaust temperature, further, by judging whether the working state of the compressor is stable, the variable frequency air conditioner is analyzed more carefully, and finally, the control mode of the electronic expansion valve is determined. The control of the controller to the electronic expansion valve is more accurate, the adjusting process of the electronic expansion valve is more smooth, and the working efficiency of the air conditioner and the experience of a user are improved.

In an exemplary embodiment, as shown in FIG. 5, step 206 includes steps 402 through 404.

Step 402, calculating the exhaust change rate of the refrigerant based on the exhaust temperature of the refrigerant.

Specifically, the controller continuously acquires the exhaust temperature of the refrigerant, and calculates the exhaust change rate of the refrigerant within a certain time. The certain time may be a set exhaust gas change determination time, for example, 10 minutes or other set time value.

Step 404, controlling the electronic expansion valve according to the exhaust gas change threshold value corresponding to the target starting mode.

Specifically, when the target start-up modes are different, there are different exhaust gas variation thresholds. And the controller compares the calculated exhaust change rate with an exhaust change threshold corresponding to the determined target starting mode, and controls the electronic expansion valve according to a comparison result. Then, the exhaust gas change thresholds to be compared for the exhaust gas change rates are also different in different target start modes. When the obtained comparison results are different, the control of the electronic expansion valve by the controller is also different.

The number of the starting modes is not unique, and the determined target starting mode is not unique. In one exemplary embodiment, the target start-up mode includes a first start-up mode, and the exhaust change threshold corresponding to the first start-up mode includes a first threshold and a second threshold. Step 404 includes step 502: and adjusting the opening degree of the electronic expansion valve according to the magnitude relation among the exhaust change rate, the first threshold value and the second threshold value.

Specifically, when the target starting mode is the first starting mode, the controller invokes a first threshold and a second threshold corresponding to the first starting mode, and compares the first threshold and the second threshold with the exhaust gas change rate. And adjusting the opening of the electronic expansion valve according to the comparison result of the sizes of the three. The following is an example:

In one exemplary embodiment, the first threshold is less than the second threshold. As shown in fig. 6, step 502 includes steps 602 through 606.

In step 602, when the exhaust gas change rate is less than or equal to a first threshold, the electronic expansion valve is adjusted according to a magnitude relationship between the target exhaust gas temperature and the exhaust gas temperature. Specifically, when the exhaust gas change rate is less than or equal to the first threshold, the exhaust gas temperature rising speed is indicated to be normal, and the electronic expansion valve can be controlled according to the flow of step 304, without additional adjustment.

In step 604, when the exhaust gas change rate is greater than the first threshold value and less than or equal to the second threshold value, the opening degree of the electronic expansion valve is prohibited from becoming smaller. Specifically, when the exhaust gas change rate is greater than the first threshold value and less than the second threshold value, the rising speed of the exhaust gas temperature is too fast, and although the rising speed does not exceed the second threshold value, the hidden danger of excessive regulation of the electronic expansion valve exists, and in order to reduce the hidden danger, the controller controls the minimum value of the opening degree of the electronic expansion valve to be the current value, namely, prohibits the opening degree of the electronic expansion valve from becoming smaller, so as to avoid excessive regulation caused by improper closing.

And step 606, when the schedule change rate is greater than the second threshold value, controlling the opening degree of the electronic expansion valve to increase by a first preset step number. Specifically, when the exhaust gas change rate is greater than the second threshold, the rising speed of the exhaust gas temperature is abnormally fast, meaning that there has been an over-regulation condition of the electronic expansion valve. The controller controls the opening of the electronic expansion valve to increase by a first preset step number at the moment, and the step number of the electronic expansion valve is adjusted back to be within a normal range.

Illustratively, the first threshold is less than 10 ℃/min, the second threshold is greater than 10 ℃/min, and less than 20 ℃/min, and the first preset number of steps may be any number of steps greater than 0 steps and less than 50 steps.

In another case, in an exemplary embodiment, the target start-up mode includes a second start-up mode, and the exhaust change threshold corresponding to the second start-up mode includes a third threshold and a fourth threshold. Step 404 includes step 702: and adjusting the opening degree of the electronic expansion valve according to the magnitude relation among the exhaust change rate, the third threshold value and the fourth threshold value.

Specifically, when the target starting mode is the second starting mode, the controller invokes a third threshold value and a fourth threshold value corresponding to the second starting mode, and compares the magnitudes with the exhaust gas change rate. And adjusting the opening of the electronic expansion valve according to the comparison result of the sizes of the three. The following is an example:

In an exemplary embodiment, the third threshold is less than the fourth threshold. As shown in fig. 7, step 702 includes steps 802 through 806.

Step 802, when the exhaust gas change rate is less than or equal to the third threshold value, adjusting the electronic expansion valve according to the magnitude relation between the target exhaust gas temperature and the exhaust gas temperature. Specifically, when the exhaust gas change rate is less than or equal to the third threshold, the exhaust gas temperature rising speed is indicated to be normal, and the electronic expansion valve can be controlled according to the flow of step 304, without additional adjustment.

In step 804, when the exhaust gas change rate is greater than the third threshold value and less than or equal to the fourth threshold value, the opening degree of the electronic expansion valve is prohibited from becoming smaller. Specifically, when the exhaust gas change rate is greater than the third threshold value and less than the fourth threshold value, the rising speed of the exhaust gas temperature is too fast, and although the rising speed does not exceed the fourth threshold value, there is a hidden danger that the electronic expansion valve is excessively regulated, and in order to reduce the hidden danger, the controller controls the minimum value of the opening degree of the electronic expansion valve to be the current value, namely, prohibits the opening degree of the electronic expansion valve from becoming smaller, so as to avoid excessive regulation caused by mistaken closing.

And step 806, when the schedule change rate is greater than the fourth threshold value, controlling the opening degree of the electronic expansion valve to increase by a second preset step number. Specifically, when the exhaust gas change rate is greater than the fourth threshold value, the rising speed of the exhaust gas temperature is abnormally fast, meaning that there has been an over-regulation condition of the electronic expansion valve. The controller controls the opening of the electronic expansion valve to increase by a second preset step number at the moment, and the step number of the electronic expansion valve is adjusted back to be within a normal range.

Illustratively, the third threshold is less than 6deg.C/min, the second threshold is greater than 6deg.C/min, and less than 18deg.C/min, and the second preset number of steps may be any number of steps greater than 0 steps and less than 50 steps.

In order to reduce the interference of external factors when determining the target starting mode, the air conditioner needs to be pre-controlled before determining the target starting mode, and the step number of the electronic expansion valve is adjusted. On the one hand, the step number of the electronic expansion valve is ensured to be in a reasonable range meeting the requirement of a user, the deviation of subsequent adjustment is reduced, and the control accuracy is improved. On the other hand, the method can respond to the demands of users in time and improve the applicability. In an exemplary embodiment, as shown in fig. 8, the air conditioner control method further includes steps 902 to 904 before performing step 204.

Step 902, obtaining the ambient temperature of the air conditioner.

Specifically, the controller obtains an ambient temperature at which the air conditioner is located, including an outdoor temperature and an indoor temperature. For example, the air conditioner includes an air conditioner indoor unit and an air conditioner outdoor unit (also referred to as an air conditioner outdoor unit), and temperature sensors may be respectively disposed in the air conditioner indoor unit and the air conditioner outdoor unit and connected to the controller. The controller obtains the ambient temperature of the environment where the air conditioner is located through each temperature sensor.

And 904, performing initial opening control on the electronic expansion valve according to the ambient temperature and the working data of the compressor.

Specifically, after the controller obtains the ambient temperature, the initial opening step number of the electronic expansion valve is obtained through comprehensive operation by combining the compressor frequency in the compressor working data and the set adjusting coefficient. And then the controller controls the electronic expansion valve according to the calculated initial opening step number. The controller can also process the ambient temperature after obtaining the ambient temperature, and then calculate by combining the compressor frequency and the adjustment coefficient. Alternatively, the processing of the ambient temperature may be averaging, or median, or may be averaging after removing part of the abnormal ambient temperature data after variance.

In this embodiment, by performing initial opening control on the electronic expansion valve before determining the target starting mode, when the electronic expansion valve is controlled in the target starting mode, it is ensured that the deviation of the electronic expansion valve cannot exceed the adjustable range of the target starting mode, which is favorable for improving the control accuracy of the controller on the electronic expansion valve and ensuring the smooth adjustment process.

In order to better understand the above solution, the following detailed explanation is made in connection with a specific embodiment in connection with the application scenario shown in fig. 1.

In one embodiment, the controller obtains the working data of the compressor and the exhaust temperature of the refrigerant, obtains the ambient temperature of the air conditioner, and performs initial opening control on the electronic expansion valve according to the ambient temperature and the working data of the compressor. After the initial opening control is continued for a period of time, a target starting mode is determined from a plurality of starting modes according to the compressor working data and the magnitude of a preset dead time value.

The controller first determines whether the exhaust temperature is greater than a target exhaust temperature. And if the exhaust temperature is greater than the target exhaust temperature, adjusting the electronic expansion valve according to the magnitude relation between the target exhaust temperature and the exhaust temperature. If the exhaust temperature is less than or equal to the target exhaust temperature, the controller judges whether the working state of the compressor is stable or not according to the working data of the compressor. And if the working state of the compressor is unstable, the controller adjusts the electronic expansion valve according to the magnitude relation between the target exhaust temperature and the exhaust temperature.

And if the working state of the compressor is stable, calculating the exhaust change rate of the refrigerant based on the exhaust temperature of the refrigerant, and controlling the electronic expansion valve according to an exhaust change threshold value corresponding to the exhaust change rate and the target starting mode. The target starting mode comprises a first starting mode and a second starting mode, the first starting mode corresponds to the condition that the working data of the compressor is smaller than a preset dead time value, and the corresponding exhaust change threshold comprises a first threshold and a second threshold. The second start mode corresponds to a condition that the compressor operating data is greater than or equal to a preset dead time value, and the corresponding exhaust change threshold includes a third threshold and a fourth threshold.

When the target starting mode is the first starting mode, the opening degree of the electronic expansion valve is adjusted according to the magnitude relation among the exhaust change rate, the first threshold value and the second threshold value: and when the exhaust gas change rate is smaller than or equal to the first threshold value, adjusting the electronic expansion valve according to the magnitude relation between the target exhaust gas temperature and the exhaust gas temperature. When the exhaust gas change rate is greater than the first threshold value and less than or equal to the second threshold value, the opening degree of the electronic expansion valve is prohibited from becoming smaller. And when the scheduling change rate is larger than the second threshold value, controlling the opening degree of the electronic expansion valve to increase by a first preset step number. The first threshold is less than 10 ℃/min, the second threshold is greater than 10 ℃/min and less than 20 ℃/min, and the first preset step number can be any step number greater than 0 step and less than 50 steps.

When the target starting mode is the second starting mode, the opening degree of the electronic expansion valve is adjusted according to the magnitude relation among the exhaust change rate, the third threshold value and the fourth threshold value: and when the exhaust gas change rate is smaller than or equal to a third threshold value, adjusting the electronic expansion valve according to the magnitude relation between the target exhaust gas temperature and the exhaust gas temperature. When the exhaust gas change rate is greater than the third threshold value and less than or equal to the fourth threshold value, the opening degree of the electronic expansion valve is prohibited from becoming smaller. And when the scheduling change rate is larger than the fourth threshold value, controlling the opening degree of the electronic expansion valve to increase by a second preset step number. The third threshold is less than 6 ℃/min, the second threshold is greater than 6 ℃/min and less than 18 ℃/min, and the second preset step number can be any step number greater than 0 step and less than 50 steps.

In this embodiment, the electronic expansion valve is controlled by determining different target start modes according to different dead times of the compressor and based on the different target start modes. The method has the advantages that the initial state of the compressor of the air conditioner is analyzed, the adjusting mode of the electronic expansion valve is determined, the electronic expansion valve is flexibly controlled according to actual conditions in the starting process of the air conditioner, the adjusting process of the electronic expansion valve is smooth and accurate, and the applicability of the air conditioner is improved.

It should be understood that, although the steps in the flowcharts related to the embodiments described above are sequentially shown as indicated by arrows, these steps are not necessarily sequentially performed in the order indicated by the arrows. The steps are not strictly limited to the order of execution unless explicitly recited herein, and the steps may be executed in other orders. Moreover, at least some of the steps in the flowcharts described in the above embodiments may include a plurality of steps or a plurality of stages, which are not necessarily performed at the same time, but may be performed at different times, and the order of the steps or stages is not necessarily performed sequentially, but may be performed alternately or alternately with at least some of the other steps or stages.

Based on the same inventive concept, the embodiment of the application also provides an air conditioner control device for realizing the air conditioner control method. The implementation of the solution provided by the device is similar to the implementation described in the above method, so the specific limitation in one or more embodiments of the air conditioner control device provided below may refer to the limitation of the air conditioner control method hereinabove, and will not be repeated herein.

In an exemplary embodiment, as shown in fig. 9, there is provided an air conditioner control device including: a detection module 920, an analysis module 940, and a control module 960, wherein:

The detection module 920 is configured to obtain working data of a compressor and an exhaust temperature of a refrigerant, where the compressor is configured to compress the refrigerant in the air conditioner.

The analysis module 940 is configured to determine a target start mode from a plurality of start modes according to the compressor operation data and a preset dead time value.

A control module 960 for controlling the electronic expansion valve according to the target start-up mode and the exhaust temperature of the refrigerant; the electronic expansion valve is used for adjusting the exhaust temperature of the refrigerant of the air conditioner.

In one embodiment, the air conditioner control device further includes an exhaust gas temperature analysis module for determining whether the exhaust gas temperature is greater than the target exhaust gas temperature before the control module 960 controls the electronic expansion valve according to the target start-up mode and the exhaust gas temperature of the refrigerant. If the exhaust temperature is greater than the target exhaust temperature, adjusting the electronic expansion valve according to the magnitude relation between the target exhaust temperature and the exhaust temperature; and if the exhaust temperature is not greater than the target exhaust temperature, executing control on the electronic expansion valve according to the target starting mode and the exhaust temperature of the refrigerant.

In one embodiment, the air conditioner control device further includes an air conditioner state analysis module, configured to determine whether the working state of the compressor is stable according to the compressor working data after the exhaust temperature analysis module determines whether the exhaust temperature is greater than the target exhaust temperature, and before the control module 960 controls the electronic expansion valve according to the target start mode and the exhaust temperature of the refrigerant, if the exhaust temperature is determined to be less than or equal to the target exhaust temperature. If the working state of the compressor is unstable, the electronic expansion valve is regulated according to the magnitude relation between the target exhaust temperature and the exhaust temperature; and if the working state of the compressor is stable, executing control of the electronic expansion valve according to the target starting mode and the exhaust temperature of the refrigerant.

In one embodiment, the control module 960 is further configured to calculate a discharge change rate of the refrigerant based on the discharge temperature of the refrigerant, and control the electronic expansion valve according to a discharge change threshold corresponding to the target start mode.

In one embodiment, the target start-up mode includes a first start-up mode, and the exhaust change threshold corresponding to the first start-up mode includes a first threshold and a second threshold. The control module 960 is further configured to adjust an opening of the electronic expansion valve according to a magnitude relationship of the exhaust gas change rate, the first threshold, and the second threshold.

In one embodiment, the control module 960 is further operable to adjust the electronic expansion valve based on a magnitude relationship between the target exhaust temperature and the exhaust temperature when the exhaust rate of change is less than or equal to the first threshold. When the exhaust gas change rate is greater than the first threshold value and less than or equal to the second threshold value, the opening degree of the electronic expansion valve is prohibited from becoming smaller. And when the scheduling change rate is larger than the second threshold value, controlling the opening degree of the electronic expansion valve to increase by a first preset step number.

In one embodiment, the target start-up mode includes a second start-up mode, and the exhaust change threshold corresponding to the second start-up mode includes a third threshold and a fourth threshold. The control module 960 is further configured to adjust an opening of the electronic expansion valve according to a magnitude relation of the exhaust gas change rate, the third threshold, and the fourth threshold.

In one embodiment, the control module 960 is further operable to adjust the electronic expansion valve based on a magnitude relationship between the target exhaust temperature and the exhaust temperature when the exhaust rate of change is less than or equal to a third threshold. When the exhaust gas change rate is greater than the third threshold value and less than or equal to the fourth threshold value, the opening degree of the electronic expansion valve is prohibited from becoming smaller. And when the scheduling change rate is larger than the fourth threshold value, controlling the opening degree of the electronic expansion valve to increase by a second preset step number.

In one embodiment, the air conditioner control device further includes an initial adjustment module, configured to obtain an ambient temperature at which the air conditioner is located before the analysis module 940 determines a target start mode from the plurality of start modes according to the compressor operation data and the magnitude of the preset dead time value, and perform initial opening control on the electronic expansion valve according to the ambient temperature and the compressor operation data.

The respective modules in the above-described air conditioner control device may be implemented in whole or in part by software, hardware, and combinations thereof. The above modules may be embedded in hardware or may be independent of a processor in the computer device, or may be stored in software in a memory in the computer device, so that the processor may call and execute operations corresponding to the above modules.

In an exemplary embodiment, a computer device, which may be a terminal, is provided, and an internal structure thereof may be as shown in fig. 10. The computer device includes a processor, a memory, an input/output interface, a communication interface, a display unit, and an input means. The processor, the memory and the input/output interface are connected through a system bus, and the communication interface, the display unit and the input device are connected to the system bus through the input/output interface. Wherein the processor of the computer device is configured to provide computing and control capabilities. The memory of the computer device includes a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system and a computer program. The internal memory provides an environment for the operation of the operating system and computer programs in the non-volatile storage media. The input/output interface of the computer device is used to exchange information between the processor and the external device. The communication interface of the computer device is used for carrying out wired or wireless communication with an external terminal, and the wireless mode can be realized through WIFI, a mobile cellular network, NFC (near field communication) or other technologies. The computer program, when executed by a processor, implements an air conditioning control method. The display unit of the computer device is used for forming a visual picture, and can be a display screen, a projection device or a virtual reality imaging device. The display screen can be a liquid crystal display screen or an electronic ink display screen, and the input device of the computer equipment can be a touch layer covered on the display screen, can also be a key, a track ball or a touch pad arranged on the shell of the computer equipment, and can also be an external keyboard, a touch pad or a mouse and the like.

It will be appreciated by those skilled in the art that the structure shown in FIG. 10 is merely a block diagram of some of the structures associated with the present inventive arrangements and is not limiting of the computer device to which the present inventive arrangements may be applied, and that a particular computer device may include more or fewer components than shown, or may combine some of the components, or have a different arrangement of components.

In one exemplary embodiment, a computer device is provided comprising a memory and a processor, the memory having stored therein a computer program, the processor when executing the computer program performing the steps of:

In one embodiment, the processor when executing the computer program further performs the steps of:

And judging whether the exhaust temperature is higher than the target exhaust temperature before the electronic expansion valve is controlled according to the target starting mode and the exhaust temperature of the refrigerant. If so, adjusting the electronic expansion valve according to the magnitude relation between the target exhaust temperature and the exhaust temperature; if not, the electronic expansion valve is controlled according to the target starting mode and the exhaust temperature of the refrigerant.

Judging whether the exhaust temperature is greater than the target exhaust temperature, and judging whether the working state of the compressor is stable according to the working data of the compressor if the exhaust temperature is less than or equal to the target exhaust temperature before the electronic expansion valve is controlled according to the target starting mode and the exhaust temperature of the refrigerant. If not, executing the adjustment of the electronic expansion valve according to the magnitude relation between the target exhaust temperature and the exhaust temperature; if yes, the electronic expansion valve is controlled according to the target starting mode and the exhaust temperature of the refrigerant.

And calculating the exhaust change rate of the refrigerant based on the exhaust temperature of the refrigerant, and controlling the electronic expansion valve according to an exhaust change threshold value corresponding to the exhaust change rate and the target starting mode.

In one embodiment, the target start-up mode includes a first start-up mode, and the exhaust change threshold corresponding to the first start-up mode includes a first threshold and a second threshold. The processor when executing the computer program also implements the steps of:

And when the exhaust gas change rate is smaller than or equal to the first threshold value, adjusting the electronic expansion valve according to the magnitude relation between the target exhaust gas temperature and the exhaust gas temperature. When the exhaust gas change rate is greater than the first threshold value and less than or equal to the second threshold value, the opening degree of the electronic expansion valve is prohibited from becoming smaller. And when the scheduling change rate is larger than the second threshold value, controlling the opening degree of the electronic expansion valve to increase by a first preset step number.

In one embodiment, the target start-up mode includes a second start-up mode, and the exhaust change threshold corresponding to the second start-up mode includes a third threshold and a fourth threshold. The processor when executing the computer program also implements the steps of:

And when the exhaust gas change rate is smaller than or equal to a third threshold value, adjusting the electronic expansion valve according to the magnitude relation between the target exhaust gas temperature and the exhaust gas temperature. When the exhaust gas change rate is greater than the third threshold value and less than or equal to the fourth threshold value, the opening degree of the electronic expansion valve is prohibited from becoming smaller. And when the scheduling change rate is larger than the fourth threshold value, controlling the opening degree of the electronic expansion valve to increase by a second preset step number.

And acquiring the environment temperature of the air conditioner before determining a target starting mode from a plurality of starting modes according to the working data of the compressor and the preset dead time value, and controlling the initial opening of the electronic expansion valve according to the environment temperature and the working data of the compressor.

In one embodiment, a computer readable storage medium is provided having a computer program stored thereon, which when executed by a processor, performs the steps of:

In one embodiment, the computer program when executed by the processor further performs the steps of:

In one embodiment, the target start-up mode includes a first start-up mode, and the exhaust change threshold corresponding to the first start-up mode includes a first threshold and a second threshold. The computer program when executed by the processor also performs the steps of:

In one embodiment, the target start-up mode includes a second start-up mode, and the exhaust change threshold corresponding to the second start-up mode includes a third threshold and a fourth threshold. The computer program when executed by the processor also performs the steps of:

In one embodiment, a computer program product is provided comprising a computer program which, when executed by a processor, performs the steps of:

Those skilled in the art will appreciate that implementing all or part of the above described methods may be accomplished by way of a computer program stored on a non-transitory computer readable storage medium, which when executed, may comprise the steps of the embodiments of the methods described above. Any reference to memory, database, or other medium used in embodiments provided herein may include at least one of non-volatile and volatile memory. The nonvolatile Memory may include Read-Only Memory (ROM), magnetic tape, floppy disk, flash Memory, optical Memory, high density embedded nonvolatile Memory, resistive random access Memory (ReRAM), magneto-resistive random access Memory (Magnetoresistive Random Access Memory, MRAM), ferroelectric Memory (Ferroelectric Random Access Memory, FRAM), phase change Memory (PHASE CHANGE Memory, PCM), graphene Memory, and the like. Volatile memory can include random access memory (Random Access Memory, RAM) or external cache memory, and the like. By way of illustration, and not limitation, RAM can be in various forms such as static random access memory (Static Random Access Memory, SRAM) or dynamic random access memory (Dynamic Random Access Memory, DRAM), etc. The databases referred to in the embodiments provided herein may include at least one of a relational database and a non-relational database. The non-relational database may include, but is not limited to, a blockchain-based distributed database, and the like. The processor referred to in the embodiments provided in the present application may be a general-purpose processor, a central processing unit, a graphics processor, a digital signal processor, a programmable logic unit, a data processing logic unit based on quantum computing, or the like, but is not limited thereto.

The technical features of the above embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.

The foregoing examples illustrate only a few embodiments of the application and are described in detail herein without thereby limiting the scope of the application. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the application, which are all within the scope of the application. Accordingly, the scope of the application should be assessed as that of the appended claims.

Claims

1. An air conditioner control method, characterized in that the method comprises:

2. The method of claim 1, wherein prior to controlling the electronic expansion valve based on the target start-up mode and the discharge temperature of the refrigerant, the method further comprises:

3. The method of claim 2, wherein after said determining whether the discharge temperature is greater than the target discharge temperature, and before said controlling the electronic expansion valve according to the target start-up mode and the discharge temperature of the refrigerant, the method further comprises:

4. The method of claim 2, wherein said controlling the electronic expansion valve according to the target start-up mode and the discharge temperature of the refrigerant comprises:

5. The method of claim 4, wherein the target start-up mode comprises a first start-up mode, and wherein the exhaust change threshold corresponding to the first start-up mode comprises a first threshold and a second threshold; the controlling the electronic expansion valve according to the exhaust change threshold corresponding to the exhaust change rate and the target starting mode includes:

6. The method of claim 5, wherein the adjusting the opening of the electronic expansion valve according to the magnitude relation of the exhaust gas change rate, the first threshold value, and the second threshold value comprises:

7. The method of claim 4, wherein the target start-up mode comprises a second start-up mode, and wherein the exhaust variation threshold corresponding to the second start-up mode comprises a third threshold and a fourth threshold; the controlling the electronic expansion valve according to the exhaust change threshold corresponding to the exhaust change rate and the target starting mode includes:

8. The method of claim 7, wherein the adjusting the opening of the electronic expansion valve according to the magnitude relation of the exhaust gas change rate, the third threshold, and the fourth threshold comprises:

9. The method of claim 1, wherein prior to determining a target start-up mode from a plurality of start-up modes based on the compressor operating data and a magnitude of a preset dead time value, the method further comprises:

Acquiring the ambient temperature of the air conditioner;

10. An air conditioner control device, characterized in that the device comprises:

11. An air conditioner, characterized in that the air conditioner comprises a compressor, a heat exchanger, an electronic expansion valve and a controller, wherein the compressor, the heat exchanger and the electronic expansion valve are all connected with the controller, the compressor and the electronic expansion valve are connected with the heat exchanger, the compressor is used for compressing a refrigerant, the electronic expansion valve is used for adjusting the exhaust temperature of the refrigerant, and the controller is used for realizing the air conditioner control method according to any one of claims 1-9.

12. A computer device comprising a memory and a processor, the memory storing a computer program, characterized in that the processor implements the steps of the method of any one of claims 1 to 9 when the computer program is executed.

13. A computer readable storage medium, on which a computer program is stored, characterized in that the computer program, when being executed by a processor, implements the steps of the method of any of claims 1 to 9.

14. A computer program product comprising a computer program, characterized in that the computer program, when being executed by a processor, implements the steps of the method of any one of claims 1 to 9.