WO2021103815A1 - Air conditioner, air conditioning control method and control device thereof, and readable storage medium - Google Patents

Abstract

Disclosed is an air conditioning control method. The method comprises: controlling an air conditioner to operate for cooling, so that an outdoor heat exchanger defrosts; after the frost on the surface of the outdoor heat exchanger is melted, controlling the air conditioner to switch to operate for heating, and obtaining a first temperature of an indoor heat exchanger; when the first temperature is less than a preset threshold, controlling an indoor fan to operate at a rotational speed less than a preset rotational speed, and controlling a compressor to operate at a frequency greater than or equal to a first preset frequency; and when the first temperature is greater than or equal to the preset threshold, controlling the indoor fan to operate at a rotational speed greater than or equal to the preset rotational speed. Also disclosed are an air conditioning control device, an air conditioner, and a readable storage medium.

Description

Air conditioner and its air conditioning control method, control device and readable storage medium

Cross-references to related applications

This application claims the priority of the Chinese patent application filed with the Chinese Patent Office on November 28, 2019, the application number is 201911191317.7, and the application title is "air conditioner and its air conditioning control method, control device and readable storage medium", all of which The content is incorporated in this application by reference.

Technical field

This application relates to the field of air conditioning technology, in particular to an air conditioning control method, an air conditioning control device, an air conditioner, and a readable storage medium.

Background technique

When the air conditioner is heating and running in a low temperature environment, the outdoor unit is prone to frosting. If the defrosting is not timely, it will affect the use of the air conditioner. Therefore, if frosting occurs during the heating operation of the air conditioner, the air conditioner is operated in cooling, the temperature of the outdoor heat exchanger is increased to achieve defrosting, and the heating operation is switched to after the defrosting is completed.

However, air conditioners generally have the function of preventing cold wind, and the air outlet temperature does not reach a certain temperature, and the air is not discharged into the room, so as to prevent the cold air from blowing into the room and affecting the user's comfort. In this state, the air conditioner enters heating operation after defrosting. Generally, the frequency of the compressor is controlled according to the current working condition. However, at this time, the temperature of the outdoor heat exchanger is higher and the temperature of the indoor heat exchanger is lower, which leads to the compressor The operating frequency is low, so the air outlet temperature cannot reach the required temperature for a long time, and the air conditioner is in the cold-proof state for a long time, which causes the user to not feel the hot air for a long time, which affects the user experience.

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

Technical solutions

The main purpose of this application is to provide an air conditioner control method, which aims to speed up the efficiency of hot air from the air conditioner after defrosting and improve user experience.

In order to achieve the above objective, the present application provides an air conditioning control method. The air conditioning control method includes the following steps:

Control the cooling operation of the air conditioner to defrost the outdoor heat exchanger;

After the frost on the surface of the outdoor heat exchanger has melted, controlling the air conditioner to switch to heating operation to obtain the first temperature of the indoor heat exchanger;

In the case that the first temperature is less than the preset threshold, controlling the indoor fan to run at a speed less than the preset speed, and controlling the compressor to run at a frequency greater than or equal to the first preset frequency;

In a case where the first temperature is greater than or equal to the preset threshold, the indoor fan is controlled to operate at a rotation speed greater than or equal to the preset rotation speed.

In an embodiment, when the first temperature is less than a preset threshold, the indoor fan is controlled to run at a speed less than the preset speed, and the compressor is controlled to run at a frequency greater than or equal to the first preset frequency. Before the steps, it also includes:

When the air conditioner starts heating operation, controlling the compressor to increase to a second preset frequency to operate, where the second preset frequency is less than the first preset frequency;

Controlling the compressor to maintain the second preset frequency to operate for a first preset period of time;

Judging whether the first temperature is less than the preset threshold;

If yes, execute the step of controlling the indoor fan to run at a speed less than the preset speed and controlling the compressor to run at a frequency greater than or equal to the first preset frequency when the first temperature is less than the preset threshold;

If not, control the indoor fan to run at a rotation speed greater than or equal to the preset rotation speed.

In an embodiment, after controlling the indoor fan to run at a rotation speed greater than or equal to the preset rotation speed, the method further includes:

Obtain the indoor ambient temperature and the set temperature of the air conditioner;

Adjust the operating frequency of the compressor according to the indoor ambient temperature and the set temperature.

In an embodiment, after the step of controlling the indoor fan to run at a rotation speed greater than or equal to the preset rotation speed, the method further includes:

Acquiring the second temperature of the outdoor heat exchanger;

The operating frequency of the compressor is adjusted according to the second temperature.

In an embodiment, when the first temperature is less than a preset threshold, before the step of controlling the compressor to run at a frequency greater than or equal to the first preset frequency, the method further includes:

Acquiring the indoor ambient temperature and the set temperature of the air conditioner, and acquiring the second temperature of the outdoor heat exchanger;

When the temperature difference between the indoor ambient temperature and the set temperature is less than or equal to a first preset value, or, when the second temperature is greater than or equal to a second preset value, execute the control compressor to The step of running at a frequency greater than or equal to the first preset frequency.

In an embodiment, after the step of obtaining the indoor ambient temperature and the set temperature of the air conditioner, and obtaining the second temperature of the outdoor heat exchanger, the method further includes:

When the temperature difference value is greater than the first preset value, and when the second temperature is less than the second preset value, the compressor is controlled according to the temperature difference value or the second temperature Operating frequency.

In an embodiment, after the step of controlling the operating frequency of the compressor according to the temperature difference value or the second temperature, the method further includes:

When the air conditioner is switched to heating operation for a second preset time period, determining whether the first temperature is less than a preset threshold;

When the first temperature is less than the preset threshold, the step of controlling the compressor to operate at a frequency greater than or equal to the first preset frequency is executed.

In addition, in order to achieve the above object, this application also proposes an air conditioning control device, the air conditioning control device comprising: a memory, a processor, and an air conditioning control program stored in the memory and running on the processor, so When the air-conditioning control program is executed by the processor, the steps of the air-conditioning control method as described in any one of the above are implemented.

In addition, in order to achieve the above object, the present application also proposes an air conditioner, which includes the air conditioner control device as described above.

In addition, in order to achieve the above-mentioned object, the present application also proposes a readable storage medium that stores an air-conditioning control program, and when the air-conditioning control program is executed by a processor, the air-conditioning system described in any one of the preceding items is implemented. Steps of the control method.

This application proposes an air conditioning control method. When the air conditioner is switched to heating operation after cooling and defrosting, when the temperature of the indoor heat exchanger is less than a preset threshold, when the indoor fan is running at less than the preset speed, the compressor is running at a speed greater than It runs at a frequency equal to or equal to the first preset frequency. When the temperature of the indoor heat exchanger is greater than the preset threshold, the outdoor fan runs at a speed greater than or equal to the preset speed. In this way, when the air conditioner enters heating operation after defrosting, the compressor does not operate at low frequency in accordance with the conventional control method, but quickly raises the temperature of the indoor heat exchanger at high frequency, so that the air outlet can quickly reach the preheated temperature. Setting a threshold and blowing air into the room prevents the air conditioner from being in a cold-proof state for a long time, greatly speeding up the efficiency of hot air from the air conditioner after defrosting and improving user experience.

Description of the drawings

FIG. 1 is a schematic diagram of the hardware structure involved in the operation of an embodiment of an air conditioning control device according to the present application;

2 is a schematic flowchart of a first embodiment of an air conditioning control method according to this application;

3 is a schematic flowchart of a second embodiment of an air conditioning control method according to this application;

4 is a schematic flowchart of a third embodiment of an air conditioning control method according to this application;

5 is a schematic flowchart of a fourth embodiment of an air conditioning control method according to this application;

FIG. 6 is a schematic flowchart of a fifth embodiment of an air conditioning control method according to this 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.

Embodiments of the present invention

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

The main solution of the embodiment of the present application is to control the cooling operation of the air conditioner; after the frost on the surface of the outdoor heat exchanger melts, control the air conditioner to switch to heating operation to obtain the first temperature of the indoor heat exchanger; When the first temperature is less than the preset threshold, the indoor fan is controlled to run at a speed less than the preset speed, and the compressor is controlled to run at a frequency greater than or equal to the first preset frequency; when the first temperature is greater than or equal to the In the case of a preset threshold, the indoor fan is controlled to operate at a rotation speed greater than or equal to the preset rotation speed.

In the prior art, when the air conditioner is switched to heating operation after cooling and defrosting, the air conditioner controls the compressor to operate based on the current actual operating conditions, resulting in a lower compressor frequency and a slower increase in the temperature of the indoor heat exchanger. However, due to the anti-cold air function of the air conditioner, the air outlet temperature does not reach a certain temperature, and no air is discharged into the room. Therefore, the current compressor control method causes the air conditioner to not emit hot air for a long time after defrosting, which affects the user experience.

This application provides the above-mentioned solution, which aims to speed up the efficiency of hot air from the air conditioner after defrosting, and improve user experience.

This application proposes an air conditioner control device, which can be applied to any type of air conditioner, such as window machines, cabinet machines, wall-mounted machines, and the like.

In the embodiment of the present application, referring to FIG. 1, the air conditioning control device includes: a processor 1001, such as a CPU, a memory 1002, a first temperature sensor 1003, a second temperature sensor 1004, a third temperature sensor 1005, a fourth temperature sensor 1006, etc. . The memory 1002 may be a high-speed RAM memory, or a stable memory (non-volatile memory), such as a magnetic disk memory. Optionally, the memory 1002 may also be a storage device independent of the aforementioned processor 1001.

Among them, the first temperature sensor 1003 is set on the coil of the indoor heat exchanger to detect the temperature of the indoor heat exchanger; the second temperature sensor 1004 is set on the coil of the outdoor heat exchanger to detect the temperature of the outdoor heat exchanger Temperature: The third temperature sensor 1005 is located at the air return of the air conditioner and is used to detect the indoor ambient temperature.

The processor 1001 is in communication connection with the memory 1002, the first temperature sensor 1003, the second temperature sensor 1004, the third temperature sensor 1005, and the fourth temperature sensor 1006, respectively.

Those skilled in the art can understand that the device structure shown in FIG. 1 does not constitute a limitation on the device, and may include more or fewer components than shown in the figure, or a combination of certain components, or different component arrangements.

As shown in FIG. 1, the memory 1002, which is a readable storage medium, may include an air conditioning control program. In the device shown in FIG. 1, the processor 1001 may be used to call the air conditioning control program stored in the memory 1002 and execute the relevant steps of the air conditioning control method in the following embodiments.

The application also provides an air conditioning control method.

2, a first embodiment of the air-conditioning control method of the present application is proposed. The air-conditioning control method includes:

Step S10, controlling the cooling operation of the air conditioner to defrost the outdoor heat exchanger;

During the operation of the air conditioner, when the air conditioner meets the defrosting conditions (such as the temperature of the outdoor heat exchanger is lower than the preset temperature and maintains the preset time, etc.), the air conditioner enters the defrost mode. In the defrosting mode, the air conditioner is in cooling operation, and the outdoor heat exchanger acts as a condenser to release heat to melt the frost on the surface of the outdoor heat exchanger.

Step S20, after the frost on the surface of the outdoor heat exchanger melts, control the air conditioner to switch to heating operation, and obtain the first temperature of the indoor heat exchanger;

When the air conditioner enters the defrosting mode for a preset period of time or the outdoor heat exchanger reaches a specified temperature or higher, it can be considered that the surface frost of the outdoor heat exchanger has melted. At this time, the air conditioner is controlled to switch to heating operation. At this time, the outdoor heat exchanger acts as an evaporator to absorb heat, and the indoor heat exchanger acts as a condenser to release heat. At this time, the temperature data detected by the temperature sensor provided in the indoor heat exchanger coil is acquired to obtain the above-mentioned first temperature.

Step S30, when the first temperature is less than the preset threshold, control the indoor fan to run at a speed less than the preset speed, and control the compressor to run at a frequency greater than or equal to the first preset frequency;

The preset threshold here can be set according to actual needs, and specifically is a temperature that does not allow the user to feel cold. For example, a human body temperature of 37° C. can be used as the preset threshold. The preset speed and the first preset frequency can be set according to actual control requirements.

When the first temperature is less than the preset threshold, it indicates that the air from the air conditioner will affect the comfort of the user. At this time, the indoor fan runs at a low speed or at a speed of 0 (stop) to prevent the air conditioner from emitting cold air. At the same time, the compressor runs at a frequency greater than or equal to the first preset frequency, so that the first temperature rises rapidly. Among them, the operating frequency of the compressor can be divided into multiple frequency intervals, and the compressor can be controlled to maintain operation in the highest frequency interval. In order to achieve the fastest increase in the first temperature, the compressor can be controlled to run at the highest operating frequency.

Step S40: When the first temperature is greater than or equal to the preset threshold, control the indoor fan to operate at a rotation speed greater than or equal to the preset rotation speed.

After the compressor runs at a high frequency, the first temperature continuously increases. When the first temperature is greater than or equal to the preset threshold, it indicates that the air outlet temperature of the air conditioner will not make the user feel cold. At this time, the indoor fan can output air at a higher wind speed, so that the hot air blows into the room to quickly adjust the indoor environment. Among them, the operating speed of the indoor fan can be determined according to the user's current windshield setting parameters.

An air conditioner control method proposed in an embodiment of the present application. When the air conditioner is switched to heating operation after cooling and defrosting, when the temperature of the indoor heat exchanger is less than a preset threshold, and the indoor fan is running at less than the preset speed, the compressor Operate at a frequency greater than or equal to the first preset frequency, and when the temperature of the indoor heat exchanger is greater than the preset threshold, the outdoor fan runs at a rotational speed greater than or equal to the preset rotational speed. In this way, when the air conditioner enters heating operation after defrosting, the compressor does not operate at low frequency in accordance with the conventional control method, but quickly raises the temperature of the indoor heat exchanger at high frequency, so that the air outlet can quickly reach the preheated temperature. Setting a threshold and blowing air into the room prevents the air conditioner from being in a cold-proof state for a long time, greatly speeding up the efficiency of hot air from the air conditioner after defrosting, and improving user experience.

In one embodiment, based on the first embodiment, a second embodiment of the air conditioning control method of the present application is proposed. In the second embodiment, referring to FIG. 3, before the step S30, the method further includes:

Step S21, when the air conditioner starts heating operation, control the compressor to increase to a second preset frequency to run, where the second preset frequency is less than the first preset frequency;

After the air conditioner exits the defrosting mode (refrigeration operation), the compressor will stop until the four-way valve switch is completed, the compressor will start again. Therefore, after the compressor starts to operate for heating, the compressor will first perform an upscaling operation. Before the compressor is increased to run at a frequency above the first preset frequency, the compressor will first be increased to a second preset frequency. The second preset frequency is specifically a frequency value that ensures the operating reliability of the air conditioning system, and can be set according to the actual operating characteristics of the system.

Step S22, controlling the compressor to maintain the second preset frequency to run for a first preset period of time;

The first preset duration can be set according to the actual operating characteristics of the system, specifically to ensure that the compressor can run at the second frequency to ensure that the system has sufficient oil return to achieve the time required for reliable operation of the system.

Step S23, judging whether the first temperature is less than the preset threshold;

If yes, execute the step S30; if not, execute the step S50.

Step S50, controlling the indoor fan to run at a rotation speed greater than or equal to the preset rotation speed.

In this embodiment, before the high frequency operation of the compressor, the low frequency operation is performed for a period of time to avoid insufficient oil return of the air conditioner when the cooling and heating operation is switched, thereby ensuring the reliability of the system operation.

In an embodiment, based on any of the above embodiments, a third embodiment of the air conditioning control method of the present application is proposed. In the third embodiment, referring to FIG. 4, after the step S40 or S50, the method further includes:

Step S61, acquiring the indoor ambient temperature and the set temperature of the air conditioner;

The outdoor ambient temperature can be obtained by obtaining temperature data detected by a temperature sensor located at the air return vent of the air conditioner.

The set temperature is specifically obtained by reading the parameters set by the user on the air conditioner.

Step S62: Adjust the operating frequency of the compressor according to the indoor ambient temperature and the set temperature.

Specifically, the operating frequency of the compressor is adjusted according to the temperature difference between the indoor ambient temperature and the set temperature. The greater the temperature difference, the higher the operating frequency; the lower the temperature difference, the lower the operating frequency.

In this embodiment, after the hot air is blown out in a short time after the air conditioner is guaranteed to be defrosted, the operation of the compressor is controlled based on the actual indoor heat exchange demand, thereby ensuring user comfort and improving the output energy efficiency of the compressor.

Wherein, after the step S40 or S50, the indoor fan can operate at a rotation speed greater than or equal to the preset rotation speed, until the air conditioner enters the heating operation for a duration of the third preset duration, and then steps S61 and S62 are executed. Realize rapid heat exchange to the indoor environment.

In an embodiment, based on any of the foregoing embodiments, a fourth embodiment of the air conditioning control method of the present application is proposed. In the fourth embodiment, referring to FIG. 5, after the step S40 or S50, the method further includes:

Step S71, acquiring the second temperature of the outdoor heat exchanger;

The outdoor ambient temperature can be specifically obtained by obtaining temperature data detected by a temperature sensor installed in the outdoor heat exchanger coil.

Step S72: Adjust the operating frequency of the compressor according to the second temperature.

Different second temperatures can correspond to different operating frequencies. The higher the second temperature, the lower the operating frequency. Specifically, when the second temperature is greater than or equal to the preset value, the compressor is controlled to run at a frequency not higher than the third preset frequency. When the second temperature is less than the preset value, the operation frequency of the compressor can be controlled according to the above steps S61 and S62, or the frequency operation of the compressor can be controlled according to other control methods.

In this embodiment, since the temperature of the outdoor heat exchanger is higher after the cooling and defrosting of the air conditioner is completed, adjusting the operating frequency of the compressor based on the second temperature of the outdoor heat exchanger can avoid the excessive temperature of the outdoor heat exchanger causing the system The pressure is too high, thereby improving the stability and reliability of the system operation, and ensuring that the system can have high heat exchange energy efficiency.

Wherein, after the step S40 or S50, the indoor fan can operate at a rotation speed greater than or equal to the preset rotation speed until the air conditioner enters the heating operation for a duration of the third preset duration, and then steps S71 and S72 are executed. Realize rapid heat exchange to the indoor environment.

In one embodiment, based on any of the above embodiments, a fifth embodiment of the air conditioning control method of the present application is proposed. In the fifth embodiment, in the step S30, the step of controlling the compressor to operate at a frequency greater than or equal to the first preset frequency is defined as step S31. Referring to FIG. 6, when the first temperature is less than the preset frequency, In the case of setting a threshold, before performing step S31, the method further includes:

Step S01, acquiring the indoor ambient temperature and the set temperature of the air conditioner, and acquiring the second temperature of the outdoor heat exchanger;

Step S02, judging whether the temperature difference between the indoor ambient temperature and the set temperature is less than or equal to a first preset value;

When the temperature difference value is less than or equal to the first preset value, the step S31 and the like are executed; when the temperature difference value is greater than the first preset value, step S03 is executed.

Step S03, judging whether the second temperature is greater than or equal to a second preset value;

When the second temperature is greater than or equal to the second preset value, the step S31 is executed; when the second temperature is less than the second preset value, the step S04 is executed.

Step S04, controlling the operating frequency of the compressor according to the temperature difference value or the second temperature.

Different temperature differences correspond to different operating frequencies. The greater the temperature difference, the greater the operating frequency. Different second temperatures correspond to different compressor operating frequencies. The higher the second temperature, the lower the compressor operating frequency.

In the existing compressor control method, the smaller the temperature difference between the indoor environment and the set temperature or the higher the temperature of the outdoor heat exchanger, the lower the operating frequency of the compressor. Therefore, in this embodiment, in order to prevent the compressor operating frequency from being too small to cause the indoor heat exchanger to have a slow heating rate, when the temperature difference is less than or equal to the first preset value, or when the temperature of the outdoor heat exchanger is greater than When it is equal to or equal to the second preset value, step S31 is executed to ensure that the indoor heat exchanger can quickly heat up, and that the air conditioner can quickly emit hot air after defrosting and heating; and it is determined that the temperature difference will not be too small, and the outdoor If the temperature of the heat exchanger is not too high, it indicates that the operating frequency of the compressor will not be too small, and the indoor heat exchanger will heat up faster. Therefore, the operating frequency of the compressor can be controlled according to the temperature difference or the temperature of the outdoor heat exchanger. This ensures that the air conditioner system can adapt to the current working conditions and has high heat exchange energy efficiency.

In an embodiment, after step S04, the method may further include: when the air conditioner is switched to heating operation for a second preset time period, judging whether the first temperature is less than a preset threshold; When the temperature is less than the preset threshold, step S31, step S40, etc. are executed; when the first temperature is greater than or equal to the preset threshold, the indoor fan is controlled to run at a rotation speed greater than or equal to the preset rotation speed. Among them, the second preset duration can be set according to actual needs. In this way, on the premise of ensuring that the air conditioner system adapts to the current working conditions and has high heat exchange energy efficiency, it is avoided that the first temperature does not meet the air outlet requirement for a long time, so that the compression can be increased in time when the second preset duration is reached The operating frequency of the air conditioner effectively avoids the phenomenon that the air conditioner does not emit hot air for a long time.

It should be noted that, in any embodiment of the present application, when the first temperature is less than the preset threshold, the indoor fan maintains a rotation speed less than the preset rotation speed.

In addition, an embodiment of the present application also proposes an air conditioner, which includes an indoor fan, a compressor, and the air conditioner control device in the foregoing embodiment. The air-conditioning control device is respectively connected with an indoor fan, a compressor, etc., so as to obtain the operation data of each component and control the operation of the component according to the relevant steps in any embodiment of the above-mentioned air-conditioning control method.

In addition, an embodiment of the present application also proposes a readable storage medium having an air conditioning control program stored on the readable storage medium, and when the air conditioning control program is executed by a processor, the relevant steps of any embodiment of the above air conditioning control method are implemented. .

It should be noted that in this article, the terms "include", "include" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or system including a series of elements not only includes those elements, It also includes other elements that are not explicitly listed, or elements inherent to the process, method, article, or system. If there are no more restrictions, the element defined by the sentence "including a..." does not exclude the existence of other identical elements in the process, method, article, or system that includes the element.

The serial numbers of the foregoing embodiments of the present application are for description only, and do not represent the superiority or inferiority of the embodiments.

Through the description of the above embodiments, those skilled in the art can clearly understand that the method of the above embodiments can be implemented by means of software plus the necessary general hardware platform. Of course, it can also be implemented by hardware, but in many cases the former is better.的实施方式。 Based on this understanding, the technical solution of this application essentially or the part that contributes to the existing technology can be embodied in the form of a software product, and the computer software product is stored in a storage medium (such as ROM/RAM) as described above. , Magnetic disks, optical disks), including several instructions to make a terminal device (which can be a mobile phone, a computer, a server, an air conditioner, or a network device, etc.) execute the methods described in the various embodiments of the present application.

The above are only the preferred 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 used in other related technical fields , The same reason is included in the scope of patent protection of this application.

Claims (16)

1. An air conditioner control method, wherein the air conditioner control method includes the following steps:

   Control the cooling operation of the air conditioner to defrost the outdoor heat exchanger;

   After the frost on the surface of the outdoor heat exchanger has melted, controlling the air conditioner to switch to heating operation to obtain the first temperature of the indoor heat exchanger;

   In the case that the first temperature is less than the preset threshold, controlling the indoor fan to run at a speed less than the preset speed, and controlling the compressor to run at a frequency greater than or equal to the first preset frequency;

   In a case where the first temperature is greater than or equal to the preset threshold, the indoor fan is controlled to operate at a rotation speed greater than or equal to the preset rotation speed.
2. The air conditioning control method according to claim 1, wherein when the first temperature is less than a preset threshold, the indoor fan is controlled to run at a speed less than the preset speed, and the compressor is controlled to be greater than or equal to the first speed. Before the step of frequency operation of preset frequency, it also includes:

   When the air conditioner starts heating operation, controlling the compressor to increase to a second preset frequency to operate, where the second preset frequency is less than the first preset frequency;

   Controlling the compressor to maintain the second preset frequency to operate for a first preset period of time;

   Judging whether the first temperature is less than the preset threshold;

   If yes, execute the step of controlling the indoor fan to run at a speed less than the preset speed and controlling the compressor to run at a frequency greater than or equal to the first preset frequency when the first temperature is less than the preset threshold;

   If not, control the indoor fan to run at a rotation speed greater than or equal to the preset rotation speed.
3. The air conditioning control method according to claim 1, wherein after said controlling said indoor fan to operate at a rotation speed greater than or equal to said preset rotation speed, further comprising:

   Obtain the indoor ambient temperature and the set temperature of the air conditioner;

   Adjust the operating frequency of the compressor according to the indoor ambient temperature and the set temperature.
4. The air conditioning control method of claim 1, wherein after the step of controlling the indoor fan to run at a rotation speed greater than or equal to the preset rotation speed, the method further comprises:

   Acquiring the second temperature of the outdoor heat exchanger;

   The operating frequency of the compressor is adjusted according to the second temperature.
5. The air conditioning control method according to any one of claims 1 to 4, wherein, in a case where the first temperature is less than a preset threshold, the control compressor operates at a frequency greater than or equal to the first preset frequency Before the steps, it also includes:

   Acquiring the indoor ambient temperature and the set temperature of the air conditioner, and acquiring the second temperature of the outdoor heat exchanger;

   When the temperature difference between the indoor ambient temperature and the set temperature is less than or equal to a first preset value, or, when the second temperature is greater than or equal to a second preset value, execute the control compressor to The step of running at a frequency greater than or equal to the first preset frequency.
6. The air conditioning control method of claim 5, wherein after the step of obtaining the indoor ambient temperature and the set temperature of the air conditioner, and obtaining the second temperature of the outdoor heat exchanger, the method further comprises:

   When the temperature difference value is greater than the first preset value, and when the second temperature is less than the second preset value, the compressor is controlled according to the temperature difference value or the second temperature Operating frequency.
7. 7. The air conditioning control method according to claim 6, wherein after the step of controlling the operating frequency of the compressor according to the temperature difference value or the second temperature, the method further comprises:

   When the air conditioner is switched to heating operation for a second preset time period, determining whether the first temperature is less than a preset threshold;

   When the first temperature is less than the preset threshold, the step of controlling the compressor to operate at a frequency greater than or equal to the first preset frequency is executed.
8. An air-conditioning control device, wherein the air-conditioning control device includes a memory, a processor, and an air-conditioning control program stored in the memory and running on the processor, and the air-conditioning control program is controlled by the processor. The steps of the air-conditioning control method described below are realized during execution: controlling the cooling operation of the air-conditioner to defrost the outdoor heat exchanger;

   After the frost on the surface of the outdoor heat exchanger has melted, controlling the air conditioner to switch to heating operation to obtain the first temperature of the indoor heat exchanger;

   In the case that the first temperature is less than the preset threshold, controlling the indoor fan to run at a speed less than the preset speed, and controlling the compressor to run at a frequency greater than or equal to the first preset frequency;

   In a case where the first temperature is greater than or equal to the preset threshold, the indoor fan is controlled to operate at a rotation speed greater than or equal to the preset rotation speed.
9. The air-conditioning control device according to claim 8, wherein, when the air-conditioning control program is executed by the processor, when the first temperature is less than a preset threshold, the indoor fan is controlled to rotate at a speed less than a preset speed. Before the step of controlling the compressor to run at a frequency greater than or equal to the first preset frequency, it is also achieved:

   When the air conditioner starts heating operation, controlling the compressor to increase to a second preset frequency to operate, where the second preset frequency is less than the first preset frequency;

   Controlling the compressor to maintain the second preset frequency to operate for a first preset period of time;

   Judging whether the first temperature is less than the preset threshold;

   If yes, execute the step of controlling the indoor fan to run at a speed less than the preset speed and controlling the compressor to run at a frequency greater than or equal to the first preset frequency when the first temperature is less than the preset threshold;

   If not, control the indoor fan to run at a rotation speed greater than or equal to the preset rotation speed.
10. 8. The air conditioner control device according to claim 8, wherein after the air conditioner control program is executed by the processor to realize the control of the indoor fan to run at a rotation speed greater than or equal to the preset rotation speed, it further realizes:

    Obtain the indoor ambient temperature and the set temperature of the air conditioner;

    Adjust the operating frequency of the compressor according to the indoor ambient temperature and the set temperature.
11. The air-conditioning control device according to claim 8, wherein, after the step of controlling the indoor fan to run at a rotation speed greater than or equal to the preset rotation speed when the air-conditioning control program is executed by the processor, further achieve:

    Acquiring the second temperature of the outdoor heat exchanger;

    The operating frequency of the compressor is adjusted according to the second temperature.
12. The air conditioning control device according to any one of claims 8 to 11, wherein, when the air conditioning control program is executed by the processor, when the first temperature is less than a preset threshold, the control compressor Before the step of running at a frequency greater than or equal to the first preset frequency, it is also realized:

    Acquiring the indoor ambient temperature and the set temperature of the air conditioner, and acquiring the second temperature of the outdoor heat exchanger;

    When the temperature difference between the indoor ambient temperature and the set temperature is less than or equal to a first preset value, or, when the second temperature is greater than or equal to a second preset value, execute the control compressor to The step of running at a frequency greater than or equal to the first preset frequency.
13. The air-conditioning control device according to claim 12, wherein, when the air-conditioning control program is executed by the processor, the acquisition of the indoor ambient temperature and the set temperature of the air conditioner is achieved, and the second of the outdoor heat exchanger is acquired. After the temperature step, it also achieves:

    When the temperature difference value is greater than the first preset value, and when the second temperature is less than the second preset value, the compressor is controlled according to the temperature difference value or the second temperature Operating frequency.
14. The air-conditioning control device according to claim 13, wherein the step of controlling the operating frequency of the compressor according to the temperature difference value or the second temperature is implemented after the air-conditioning control program is executed by the processor , And also achieve:

    When the air conditioner is switched to heating operation for a second preset time period, determining whether the first temperature is less than a preset threshold;

    When the first temperature is less than the preset threshold, the step of controlling the compressor to operate at a frequency greater than or equal to the first preset frequency is executed.
15. An air conditioner, wherein the air conditioner includes the air conditioner control device according to claim 8.
16. A readable storage medium, wherein an air conditioning control program is stored on the readable storage medium, and when the air conditioning control program is executed by a processor, the air conditioning control method according to any one of claims 1 to 7 is implemented step.