WO2021120497A1

WO2021120497A1 - Air conditioner, refrigeration control method for air conditioner, and storage medium

Info

Publication number: WO2021120497A1
Application number: PCT/CN2020/088407
Authority: WO
Inventors: 邹大枢
Original assignee: 广东美的制冷设备有限公司
Priority date: 2019-12-18
Filing date: 2020-04-30
Publication date: 2021-06-24
Also published as: CN111023515A; CN111023515B

Abstract

An air conditioner, a refrigeration control method for an air conditioner, and a storage medium. The refrigeration control method for an air conditioner comprises: when an air conditioner is in a low-temperature refrigeration mode, acquiring a first indoor pipeline temperature of an evaporator, and calculating a first temperature difference between a preset anti-freezing temperature threshold and the first indoor pipeline temperature; and according to the first temperature difference, controlling a corresponding number of fans in a fan group to operate.

Description

Air conditioner, air conditioner refrigeration control method and storage medium

This application claims the priority of the Chinese patent application filed on December 18, 2019, with application number 201911321492.3, titled "air conditioner, air conditioner refrigeration control method and storage medium", the entire content of which is incorporated herein by reference Applying.

Technical field

This application relates to the technical field of air conditioners, and in particular to an air conditioner, a refrigeration control method of an air conditioner, and a computer-readable storage medium.

Background technique

In a general air conditioning system in a low temperature environment, the refrigeration capacity cannot reach the nominal value, nor can it meet the demand for large capacity output at low temperatures. At present, in order to reach the nominal value, the air conditioner controls the high frequency operation of the compressor at low temperature or controls the frequent start and stop of the external fan, thereby increasing the pressure ratio and thereby enhancing the cooling capacity. When the heat exchange area of the internal machine is small, this solution is likely to cause the anti-freezing program to start, causing the compressor to frequently switch between high and low frequencies, which affects the service life of the compressor. In addition, in a low-temperature environment, the frequent start and stop of the fan of the external unit of the air conditioner not only affects the service life of the motor, but also causes noise and reduces the user experience.

Summary of the invention

technical problem

The solution to the problem

Technical solutions

The main purpose of this application is to provide an air conditioner, an air conditioner refrigeration control method, and a computer-readable storage medium, aiming to solve the technical problem that the existing air conditioner easily affects the service life of the compressor and the motor and generates noise when the air conditioner is refrigerated.

To achieve the above objective, the present application provides a refrigeration control method for an air conditioner. The refrigeration control method of the air conditioner is applied to a refrigeration control system of the air conditioner, the refrigeration control system includes a fan unit, and the air conditioner The refrigeration control methods include:

When the air conditioner is in the low-temperature cooling mode, acquiring the first indoor pipeline temperature of the evaporator, and calculating the first temperature difference between the preset anti-freezing temperature threshold and the first indoor pipeline temperature; and

According to the first temperature difference, the operation of a corresponding number of fans in the fan group is controlled.

In one embodiment, the fan unit includes an upper fan and a lower fan, and in the case of "when the air conditioner is in a low-temperature cooling mode, the first indoor pipe temperature of the evaporator is acquired, and the preset anti-freezing temperature is calculated Before the step of "the first temperature difference between the threshold and the first indoor pipeline temperature", the method further includes:

When the current outdoor ambient temperature is lower than the preset low temperature threshold, turn on the low temperature cooling mode of the air conditioner, and control the upper fan and the lower fan of the air conditioner to start running according to the preset low temperature cooling control parameter;

The step of "controlling the operation of a corresponding number of fans in the fan group according to the first temperature difference to correspondingly reduce or increase the cooling temperature of the air conditioner" includes:

If the temperature of the first indoor pipeline is not less than the anti-freezing temperature threshold, and the first temperature difference is less than the first preset threshold, the upper fan is controlled to stop running, and the lower fan is controlled to continue to run .

In an embodiment, the step of "controlling the operation of a corresponding number of fans in the fan group according to the first temperature difference" further includes:

If the temperature of the first indoor pipeline is not less than the anti-freezing temperature threshold, and the first temperature difference is greater than the first preset threshold, the upper temperature of the air conditioner is controlled according to the low-temperature refrigeration control parameter. The fan and the lower fan continue to run.

In one embodiment, if the temperature of the first indoor pipeline is not less than the anti-freezing temperature threshold, and the first temperature difference is less than the first preset threshold, the upper fan is controlled to stop After the step of "operating and controlling the lower fan to continue to run", the method further includes:

After the upper fan stops running for a preset time, obtain the second indoor pipeline temperature of the evaporator, and calculate the second temperature difference between the second indoor pipeline temperature and the anti-freezing temperature threshold; and

If the second indoor pipeline temperature is not less than the anti-freezing temperature threshold, and the second temperature difference is less than the first preset threshold, the upper fan and the lower fan are controlled to stop running.

In one embodiment, in the case of "if the temperature of the second indoor pipeline is not less than the anti-freezing temperature threshold, and the second temperature difference is less than the first preset threshold, control the upper After the step of stopping the operation of the fan and the lower fan, the method further includes:

After the upper fan and the lower fan stop running for a preset time, take the third indoor pipeline temperature of the evaporator, and calculate the third temperature difference between the third indoor pipeline temperature and the anti-freezing temperature threshold Value; and

If the temperature of the third indoor pipeline is not less than the anti-freezing temperature threshold, and the third temperature difference is less than the first preset threshold, control the compressor of the air conditioner to reduce the preset frequency to run .

In one embodiment, after the “after the upper fan and the lower fan stop running for a preset time, the temperature of the third indoor pipeline of the evaporator is taken, and the temperature of the third indoor pipeline is calculated as After the step of "the third temperature difference of the anti-freezing temperature threshold", the method further includes:

If the temperature of the third indoor pipeline is not less than the anti-freezing temperature threshold, and the third temperature difference is greater than the second preset threshold, the lower fan is controlled to resume operation according to the low-temperature refrigeration control parameter, and The upper fan is controlled to continue to stop running, wherein the first preset threshold is less than the second preset threshold.

In one embodiment, after the “after the upper fan stops running for a preset time, the second indoor pipeline temperature of the evaporator is acquired, and the second indoor pipeline temperature and the anti-freezing After the step of "the second temperature difference of the temperature threshold", the method further includes:

If the second indoor pipeline temperature is not less than the anti-freezing temperature threshold, and the second temperature difference is greater than the second preset threshold, control the upper fan to resume operation according to the low-temperature refrigeration control parameter , And control the lower fan to continue running.

In one embodiment, in the “when the air conditioner is in the low temperature cooling mode, the first indoor pipe temperature of the evaporator is acquired, and the difference between the preset anti-freezing temperature threshold and the first indoor pipe temperature is calculated. The steps of "first temperature difference" include:

When the air conditioner is in the low temperature cooling mode, acquiring the first indoor pipeline temperature of the evaporator, and determining whether the first indoor pipeline temperature is not less than the anti-freezing temperature threshold;

If the first indoor pipeline temperature is not less than the anti-freezing temperature threshold, calculating the first temperature difference between the anti-freezing temperature threshold and the first indoor pipeline temperature; and

If the temperature of the first indoor pipeline is less than the anti-freezing temperature threshold, the entire air conditioner is controlled to stop running.

To achieve the above object, the present application also provides an air conditioner, the air conditioner including a memory, a processor, and a cooling control program of the air conditioner stored in the memory and running on the processor, the air conditioner When the cooling control program is executed by the processor, the cooling control method of the air conditioner as described above is realized.

In order to achieve the above objective, the present application also provides a computer-readable storage medium, the computer-readable storage medium includes a refrigeration control program of an air conditioner, the refrigeration control program of the air conditioner is executed by a processor to achieve the above Refrigeration control method of air conditioner.

The air conditioner, the refrigeration control method of the air conditioner, and the computer-readable storage medium provided by the present application, the refrigeration control method of the air conditioner is applied to the refrigeration control system of the air conditioner, the refrigeration control system includes a fan unit, the The refrigeration control method of the air conditioner obtains the first indoor pipe temperature of the evaporator when the air conditioner is in the low temperature refrigeration mode, and calculates the first temperature between the preset anti-freezing temperature threshold and the first indoor pipe temperature Difference; according to the first temperature difference, control the operation of a corresponding number of fans in the fan group. Through the above method, when the application is cooling under low temperature conditions, based on the temperature difference between the first indoor pipeline temperature of the evaporator and the anti-freezing temperature threshold, the operation of the corresponding number of fans in the fan group is correspondingly controlled, such as in cooling When the capacity is insufficient, increase the number of fans operating in the fan group, and reduce the number of fans operating in the fan group when the cooling capacity is large. The high and low frequency switching operation of the compressor and the frequent start and stop of the fan are avoided, the service life of the compressor and the fan of the air conditioner is increased, the working noise of the air conditioner is reduced, the user experience is improved, and the cooling time of the existing air conditioner is solved. Technical problems that easily affect the service life of compressors and motors and produce noise.

The beneficial effects of the invention

Brief description of the drawings

Description of the drawings

FIG. 1 is a schematic diagram of the hardware structure of an air conditioner involved in an embodiment of the application;

2 is a schematic flowchart of a first embodiment of a refrigeration control method for an air conditioner according to the present application;

Figure 3 is a schematic diagram of the structure of the refrigeration control system of the application;

4 is a schematic flowchart of a second embodiment of a refrigeration control method for an air conditioner according to this application;

Fig. 5 is a schematic flowchart of a third embodiment of a refrigeration control method for an air conditioner according to the present application.

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

Invention embodiment

Embodiments of the present invention

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

The main solution of the embodiment of the present application is: when the air conditioner is in the low temperature cooling mode, obtain the first indoor pipeline temperature of the evaporator, and calculate the difference between the preset anti-freezing temperature threshold and the first indoor pipeline temperature A first temperature difference value; according to the first temperature difference value, the operation of a corresponding number of fans in the fan group is controlled. Through the above method, when the application is cooling under low temperature conditions, based on the temperature difference between the first indoor pipeline temperature of the evaporator and the anti-freezing temperature threshold, the operation of the corresponding number of fans in the fan group is correspondingly controlled, such as in cooling When the capacity is insufficient, increase the number of fans operating in the fan group, and reduce the number of fans operating in the fan group when the cooling capacity is large. The high and low frequency switching operation of the compressor and the frequent start and stop of the fan are avoided, the service life of the compressor and the fan of the air conditioner is increased, the working noise of the air conditioner is reduced, and the user experience is improved.

As an implementation scheme, the air conditioner can be as shown in Figure 1.

The solution of the embodiment of the present application relates to an air conditioner. The air conditioner includes a processor 1001 (for example, a CPU), a communication bus 1002, a user interface 1003, a network interface 1004, and a memory 1005. Among them, the communication bus 1002 is used to implement connection and communication between these components.

The memory 1005 may be a high-speed RAM memory, or a stable memory (non-volatile memory), such as a magnetic disk memory. As shown in FIG. 1, the memory 1005, which is a computer storage medium, may include a cooling control program of an air conditioner; and the processor 1001 may be used to call the cooling control program of the air conditioner stored in the memory 1005 and perform the following operations:

In an embodiment, the processor 1001 may be used to call the cooling control program of the air conditioner stored in the memory 1005, and perform the following operations:

According to the above solution, this embodiment controls the operation of a corresponding number of fans in the fan group based on the temperature difference between the first indoor pipeline temperature of the evaporator and the anti-freezing temperature threshold when cooling under low temperature conditions, such as When the cooling capacity is insufficient, increase the number of fans operating in the fan group, and reduce the number of fans operating in the fan group when the cooling capacity is high. The high and low frequency switching operation of the compressor and the frequent start and stop of the fan are avoided, the service life of the compressor and the fan of the air conditioner is increased, the working noise of the air conditioner is reduced, and the user experience is improved.

Based on the above hardware architecture, an embodiment of the refrigeration control method of the air conditioner of the present application is proposed.

Referring to Figure 2, Figure 2 is a first embodiment of a refrigeration control method for an air conditioner of this application. The refrigeration control method of the air conditioner is applied to the refrigeration control system of the air conditioner, and the refrigeration control system includes a fan unit, and The refrigeration control method of the air conditioner includes the following steps:

Step S10, when the air conditioner is in the low temperature cooling mode, obtain the first indoor pipeline temperature of the evaporator, and calculate a first temperature difference between a preset anti-freezing temperature threshold and the first indoor pipeline temperature.

At present, the air conditioning system is in a low temperature environment, and the refrigeration capacity cannot reach the nominal value, and cannot meet the demand for large capacity output at low temperature. In order to achieve the nominal value of some air conditioners, the compressor is designed to operate at high frequency or the external fan frequently starts and stops at low temperatures to increase the pressure ratio and thereby increase the capacity. When the heat exchange area of the internal machine is small, this may cause the anti-freeze program to start, causing the compressor to frequently switch between high and low frequencies. Therefore, the existing technical solutions have the following problems:

1. In order to reach the nominal value of the refrigeration capacity in a low temperature environment, the compressor is designed to operate at high frequency or the external fan frequently starts and stops in a low temperature environment to increase the pressure ratio and thereby increase the capacity, which causes noise problems;

2. When the heat exchange area of the internal machine is small, it is easy to cause the anti-freeze program to start, which causes the compressor to switch frequently between high and low frequencies, which not only produces noise problems, causes poor user comfort, and affects the life of the compressor;

3. In a low temperature environment, the fan of the external unit of the air conditioner frequently starts and stops, which not only shortens the life of the motor, but also causes noise and poor comfort.

In order to solve the above problems, when the application is cooling under low temperature conditions, based on the temperature difference between the first indoor pipeline temperature of the evaporator and the anti-freezing temperature threshold, the corresponding number of fans in the fan group are controlled to operate, such as in When the cooling capacity is insufficient, increase the number of fans operating in the fan group, and reduce the number of fans operating in the fan group when the cooling capacity is high. The high and low frequency switching operation of the compressor and the frequent start and stop of the fan are avoided, the service life of the compressor and the fan of the air conditioner is increased, the working noise of the air conditioner is reduced, and the user experience is improved.

The fan group includes an upper fan and a lower fan. In a specific embodiment, the upper fan and the lower fan may also be a left fan and a right fan, and the fan group may also include multiple fans, such as a first fan, a second fan, The third fan or the fourth fan, etc. The structure of the refrigeration control system is shown in Figure 3. 1 is the inverter compressor, 2 is the four-way valve, 3 is the condenser, 31 is the upper fan, 32 is the lower fan, 33 is the pipeline temperature sensor, and 34 is the external ambient temperature. Sensor, 4 is filter, 5 is heating electronic expansion valve, 6 is electric control of refrigerant pipe, 7 is cooling throttle valve, 8 is filter, 9 is evaporator, 91 is internal fan, 92 is indoor pipeline temperature The sensor, 10 is a vapor-liquid separator. Among them, when the system is cooling, the high temperature and high pressure gas refrigerant discharged from the compressor 1 flows through the four-way valve 2, enters the condenser 3 side for heat dissipation, passes through the filter 4, the heating electronic expansion valve 5, and passes through the refrigerant tube electronic control 6 , To achieve cooling of the electronically controlled heating components, and then throttling through the refrigeration throttle valve 7 to form a low temperature and low pressure refrigerant. The refrigerant then enters the indoor side evaporator 9 for heat absorption and evaporation, and then flows into the vapor-liquid separator 10 for vaporization. Liquid separation, the gas refrigerant returns to the compressor 1 for circulation, and the liquid refrigerant is stored in the gas-liquid separator 10. When the system is heating, the high-temperature and high-pressure gas refrigerant discharged from the compressor flows through the four-way valve, enters the evaporator side for heat dissipation, passes through the filter, the refrigeration throttle valve, and is electrically controlled by the refrigerant tube to realize the electronic control of the heating components. After cooling, it is throttled by the heating electronic expansion valve to form a low-temperature and low-pressure refrigerant. The refrigerant enters the outdoor condenser for heat absorption and evaporation, and then flows into the gas-liquid separator for vapor-liquid separation, and the gaseous refrigerant returns to the compressor The liquid refrigerant is stored in the gas-liquid separator. In this application, the execution body is the refrigeration control system. When the refrigeration control system detects that the air conditioner is currently in the low-temperature cooling mode, it detects and acquires the current indoor pipeline temperature of the evaporator as the first indoor pipeline temperature, and then compares the first indoor pipeline temperature with the preset temperature. The anti-freezing temperature threshold is compared, and the first temperature difference between the preset anti-freezing temperature threshold and the first indoor pipeline temperature is calculated. Wherein, if the current indoor pipeline temperature is less than the anti-freezing temperature threshold, it means that the current indoor temperature is very low, causing the original components of the air conditioner to freeze.

It should be noted that the step S10 includes:

In this embodiment, in order to prevent the air conditioner from being damaged when the components may freeze, it is first determined whether the current indoor pipeline temperature is not less than the anti-freezing temperature threshold, and if it is less than the anti-freezing temperature threshold , The entire air conditioner is controlled to stop running. Until it is detected that the indoor pipeline temperature of the evaporator is not less than the anti-freezing temperature threshold, the subsequent control process is entered.

Step S20, controlling the operation of a corresponding number of fans in the fan group according to the first temperature difference.

In this embodiment, when the temperature of the first indoor pipeline is not less than the anti-freezing temperature threshold, that is, the first temperature difference is that the temperature of the first indoor pipeline is higher than the anti-freezing temperature threshold The difference. According to the first temperature difference, it is determined whether the current indoor temperature needs to increase the refrigeration capacity or decrease the refrigeration capacity. Therefore, the operation of the corresponding number of fans in the fan group is correspondingly controlled, that is, when the cooling capacity needs to be increased, the number of fans in the fan group that start to operate is increased, and when the cooling capacity needs to be reduced, the fan group is reduced. The number of fans running in the middle is to increase the number of fans that stop running in the fan group.

It should be noted that, according to the difference between the indoor management temperature and the anti-freezing temperature threshold, this application accurately controls the number of running fans in the fan group according to the specific size of the difference when preventing the air conditioner components from freezing .

In the technical solution provided by this embodiment, when cooling under low temperature conditions, based on the temperature difference between the first indoor pipeline temperature of the evaporator and the anti-freezing temperature threshold, the operation of a corresponding number of fans in the fan group is correspondingly controlled For example, when the cooling capacity is insufficient, increase the number of fans running in the fan group, and when the cooling capacity is high, reduce the number of fans running in the fan group. The high and low frequency switching operation of the compressor and the frequent start and stop of the fan are avoided, the service life of the compressor and the fan of the air conditioner is increased, the working noise of the air conditioner is reduced, and the user experience is improved.

4, FIG. 4 is a second embodiment of the refrigeration control method of an air conditioner according to the present application. Based on the first embodiment, the fan unit includes an upper fan and a lower fan, and the step S20 includes:

Step S21, if the temperature of the first indoor pipeline is not less than the anti-freezing temperature threshold, and the first temperature difference is less than a first preset threshold, control the upper fan to stop running, and control the lower The fan continues to run.

In this embodiment, specific description will be given by assuming that the fan unit includes an upper fan and a lower fan. If the temperature of the first indoor pipeline is not less than the anti-freezing temperature threshold, and the first temperature difference is less than the first preset threshold, it means that the current indoor temperature is sufficiently low, that is, the indoor cooling capacity is sufficient, which means At present, the cooling capacity of the air conditioner can be reduced, and the number of fans currently running can be reduced, that is, the upper fan in the fan group is controlled to stop running, and the lower fan is controlled to continue to operate.

It should be noted that, before the step S10, it further includes:

When the current outdoor ambient temperature is lower than the preset low temperature threshold, the low temperature cooling mode of the air conditioner is turned on, and the upper fan and the lower fan of the air conditioner are controlled to start running according to the preset low temperature cooling control parameter.

In this embodiment, firstly, the outdoor environment temperature sensor is used to detect whether the current outdoor environment is lower than the preset low temperature threshold, that is, when the current outdoor environment is lower than the low temperature threshold, the low temperature cooling mode needs to be turned on, otherwise, the normal cooling control is followed. Parameters, such as preset compressor operating frequency and fan speed, control the operation of the air conditioner. When it is detected that the current air conditioner needs to turn on the low temperature cooling mode, the preset low temperature cooling control parameter corresponding to the low temperature cooling mode is acquired, and the upper fan and the lower fan in the fan group corresponding to the air conditioner are controlled to start running. In a specific embodiment, it further includes controlling the compressor of the air conditioner to operate at a preset frequency. After controlling the compressor and the fan to work for a preset time, obtain the current indoor pipeline temperature to perform related control operations.

Further, the step S20 further includes:

In this embodiment, if it is detected that the temperature of the first indoor pipeline is not less than the anti-freezing temperature threshold, and the first temperature difference is greater than the first preset threshold, it means the temperature of the current indoor temperature Higher, the indoor cooling capacity is insufficient, and the continued cooling of the air conditioner is required. Therefore, the air conditioner is controlled to continue to operate with the low-temperature cooling control parameters, that is, the upper fan and the lower fan in the fan group are controlled to continue cooling with the initial parameters.

In the technical solution provided in this embodiment, when the cooling capacity is insufficient, the number of fans operating in the fan group is increased, and when the cooling capacity is high, the upper fan in the fan group is controlled to stop running or the lower fan is controlled to stop Operation, reduce the number of fans in the fan group. The high and low frequency switching operation of the compressor and the frequent start and stop of the fan are avoided, the service life of the compressor and the fan of the air conditioner is increased, the working noise of the air conditioner is reduced, and the user experience is improved.

Referring to Fig. 5, Fig. 5 is a third embodiment of a refrigeration control method for an air conditioner according to the present application. Based on the first embodiment, after the step S21, the method further includes:

Step S30, after the upper fan stops running for a preset time, obtain the second indoor pipeline temperature of the evaporator, and calculate the second temperature difference between the second indoor pipeline temperature and the anti-freezing temperature threshold Value; and

Step S40, if the second indoor pipeline temperature is not less than the anti-freezing temperature threshold, and the second temperature difference is less than the first preset threshold, control the upper fan and the lower fan to stop run.

In this embodiment, after controlling the preset number of fans in the fan group to stop running, that is, controlling the upper fans to stop, continue to detect changes in the current indoor pipeline temperature, that is, to obtain the evaporator And calculate the second temperature difference between the second indoor pipeline temperature and the anti-freezing temperature threshold. If the second indoor pipeline temperature is not less than the anti-freezing temperature threshold, and the second temperature difference is less than the first preset threshold, that is, after the upper fan is stopped, the current indoor pipeline temperature is still sufficiently low , The lower fan can be further controlled to stop running, so as to further reduce the cooling capacity of the air conditioner.

In an embodiment, after the step S40, the method further includes:

If the second indoor pipeline temperature is not less than the anti-freezing temperature threshold, and the second temperature difference is greater than the second preset threshold, control the upper fan to resume operation according to the low-temperature refrigeration control parameter , And control the lower fan to continue to run, wherein the first preset threshold is less than the second preset threshold.

In this embodiment, after controlling some fans in the fan group to stop running, the indoor temperature exceeds the second preset threshold, which means that after the upper or lower fans are turned off, the current indoor temperature rises, and the current indoor temperature The cooling capacity is insufficient, and the operation of the stopped upper fan or lower fan needs to be restored to increase the cooling capacity of the air conditioner. Wherein, the first preset threshold is less than the second preset threshold. For example, the first preset threshold is the anti-freezing threshold +6, and the second preset threshold is the anti-freezing threshold +8.

It should be noted that when it is detected that the current indoor pipeline temperature is sufficiently low, either the upper fan or the lower fan can be controlled to stop running. If the current indoor pipeline temperature is still sufficiently low after any one of the fans stops running, the remaining fans of the fan group are further controlled to stop running, so as to further reduce the cooling capacity of the air conditioner. In a specific embodiment, the specific difference of the temperature difference and the specific power value of the fans in the fan group may also be combined to determine the priority of stopping the fans. If the temperature difference is large, that is, the current indoor cooling capacity is sufficient, the fan with higher power will be stopped first. When the temperature difference is small, that is, the current indoor cooling capacity is normal, the lower power fan will be stopped first.

In the technical solution provided in this embodiment, when the cooling capacity is insufficient, the number of fans operating in the fan group is increased, and when the cooling capacity is high, the upper fan in the fan group is controlled to stop running or the lower fan is controlled to stop Operation, reduce the number of fans in the fan group. And after controlling the corresponding number of fans to stop running, if it is detected that the current indoor refrigeration capacity is still large, the number of fans running in the fan group is further reduced, thereby accurately controlling the number of working fans in the fan group, and accurately controlling the air conditioner The cooling capacity of the air conditioner avoids the high and low frequency switching operation of the compressor and the frequent start and stop of the fan, increases the service life of the compressor and the fan of the air conditioner, reduces the working noise of the air conditioner, and improves the user experience.

In an embodiment, after the step S40, the method further includes:

In this embodiment, after controlling both the upper fan and the lower fan in the fan group to stop running for a preset time, that is, after controlling all fans of the fan group to stop running for a preset time, the second detection of the evaporator is performed again. Three indoor pipeline temperatures, and then calculate a third temperature difference between the third indoor pipeline temperature and the anti-freezing temperature threshold. If the temperature of the third indoor pipeline is not less than the anti-freezing temperature threshold, and the third temperature difference is less than the first preset threshold, which means that the current indoor environment is still sufficiently cold, then further control all The compressor of the air conditioner reduces the preset frequency value, such as 3HZ, thereby further reducing the cooling capacity of the air conditioner. In a specific embodiment, after controlling the compressor of the air conditioner to reduce the preset frequency and run for a preset time, the indoor pipeline temperature is detected again, and if the cooling capacity is still sufficient, the working frequency of the compressor is further reduced until it is turned off. The compressor.

In one embodiment, after the upper fan and the lower fan stop running for a preset time, the temperature of the third indoor pipeline of the evaporator is taken, and the temperature of the third indoor pipeline is calculated as compared with the temperature of the prevention. After the step of freezing the third temperature difference of the temperature threshold, the method further includes:

In this embodiment, after controlling both the upper fan and the lower fan in the fan group to stop running for a preset time, that is, after controlling all fans of the fan group to stop running for a preset time, the second detection of the evaporator is performed again. Three indoor pipeline temperatures, and then calculate a third temperature difference between the third indoor pipeline temperature and the anti-freezing temperature threshold. If the temperature of the third indoor pipeline is not less than the anti-freezing temperature threshold, and the third temperature difference is greater than the second preset threshold, it means that the current indoor temperature rises after the upper fan and the lower fan are turned off, The current indoor refrigeration capacity is insufficient, therefore, the fans in the fan group are gradually controlled to resume operation in sequence. For example, control the lower fan to resume operation according to the low-temperature refrigeration control parameter and control the upper fan to continue to stop running, or control the upper fan to resume operation according to the low-temperature refrigeration control parameter and control the lower fan to continue to stop run.

The present application also provides an air conditioner including a memory, a processor, and a cooling control program of the air conditioner stored in the memory and operable on the processor, and the cooling control program of the air conditioner is The processor implements the steps of the refrigeration control method of the air conditioner described in the above embodiment when executed.

The present application also provides a computer-readable storage medium, the computer-readable storage medium includes a refrigeration control program of an air conditioner, and when the refrigeration control program of the air conditioner is executed by a processor, the air conditioner as described in the above embodiment is implemented Steps of refrigeration control method.

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.

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 device 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 device. 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 device that includes the element.

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. , Disks, optical disks), including several instructions to make a terminal air conditioner (can be a mobile phone, a computer, a server, an air conditioner, or a network air conditioner, etc.) execute the method described in each embodiment of the present application.

The above are only the preferred embodiments of the application, and do not limit the scope of the patent for this application. Any equivalent structure or equivalent process transformation made using the content of the description and drawings of the application, or directly or indirectly applied to other related technical fields , The same reason is included in the scope of patent protection of this application.

Claims

A refrigeration control method of an air conditioner, wherein the refrigeration control method of the air conditioner is applied to a refrigeration control system of the air conditioner, the refrigeration control system includes a fan unit, and the refrigeration control method of the air conditioner includes:

When the air conditioner is in the low-temperature cooling mode, acquiring the first indoor pipeline temperature of the evaporator, and calculating the first temperature difference between the preset anti-freezing temperature threshold and the first indoor pipeline temperature; and

According to the first temperature difference, the operation of a corresponding number of fans in the fan group is controlled.
The cooling control method of an air conditioner according to claim 1, wherein the fan unit includes an upper fan and a lower fan, and the first indoor pipe of the evaporator is obtained when the air conditioner is in a low-temperature cooling mode. Before the step of calculating the first temperature difference between the preset anti-freezing temperature threshold and the first indoor pipeline temperature", the method further includes:

When the current outdoor ambient temperature is lower than the preset low temperature threshold, turn on the low temperature cooling mode of the air conditioner, and control the upper fan and the lower fan of the air conditioner to start running according to the preset low temperature cooling control parameter;

The step of "controlling the operation of a corresponding number of fans in the fan group according to the first temperature difference to correspondingly reduce or increase the cooling temperature of the air conditioner" includes:

If the temperature of the first indoor pipeline is not less than the anti-freezing temperature threshold, and the first temperature difference is less than the first preset threshold, the upper fan is controlled to stop running, and the lower fan is controlled to continue to run .
The refrigeration control method of an air conditioner according to claim 2, wherein the step of "controlling the operation of a corresponding number of fans in the fan group according to the first temperature difference" further comprises:

If the temperature of the first indoor pipeline is not less than the anti-freezing temperature threshold, and the first temperature difference is greater than the first preset threshold, the upper temperature of the air conditioner is controlled according to the low-temperature refrigeration control parameter. The fan and the lower fan continue to run.
The refrigeration control method of an air conditioner according to claim 2, wherein, in the "if the temperature of the first indoor pipeline is not less than the anti-freezing temperature threshold, and the first temperature difference is less than the first predetermined After setting the threshold, control the upper fan to stop running and control the lower fan to continue to run" step, the method further includes:

After the upper fan stops running for a preset time, obtain the second indoor pipeline temperature of the evaporator, and calculate the second temperature difference between the second indoor pipeline temperature and the anti-freezing temperature threshold; and

If the second indoor pipeline temperature is not less than the anti-freezing temperature threshold, and the second temperature difference is less than the first preset threshold, the upper fan and the lower fan are controlled to stop running.
The refrigeration control method of an air conditioner according to claim 4, wherein in the "if the second indoor pipe temperature is not less than the anti-freezing temperature threshold, and the second temperature difference is less than the first After the step of controlling the upper fan and the lower fan to stop running" with a preset threshold, the method further includes:

After the upper fan and the lower fan stop running for a preset time, take the third indoor pipeline temperature of the evaporator, and calculate the third temperature difference between the third indoor pipeline temperature and the anti-freezing temperature threshold Value; and

If the temperature of the third indoor pipeline is not less than the anti-freezing temperature threshold, and the third temperature difference is less than the first preset threshold, control the compressor of the air conditioner to reduce the preset frequency to run .
The refrigeration control method of an air conditioner according to claim 5, wherein, after said "after the upper fan and the lower fan stop operating for a preset time, the third indoor pipe temperature of the evaporator is taken and calculated After the step of "the third temperature difference between the third indoor pipeline temperature and the anti-freezing temperature threshold", the method further includes:

If the temperature of the third indoor pipeline is not less than the anti-freezing temperature threshold, and the third temperature difference is greater than the second preset threshold, the lower fan is controlled to resume operation according to the low-temperature refrigeration control parameter, and The upper fan is controlled to continue to stop running, wherein the first preset threshold is less than the second preset threshold.
The refrigeration control method of an air conditioner according to claim 4, wherein, after said “after the upper fan stops operating for a preset time, the second indoor pipe temperature of the evaporator is acquired, and the first indoor pipe temperature is calculated. After the second temperature difference between the second indoor pipeline temperature and the anti-freezing temperature threshold, the method further includes:

If the second indoor pipeline temperature is not less than the anti-freezing temperature threshold, and the second temperature difference is greater than the second preset threshold, control the upper fan to resume operation according to the low-temperature refrigeration control parameter , And control the lower fan to continue running.
The refrigeration control method of an air conditioner according to any one of claims 1-7, wherein the "when the air conditioner is in a low temperature cooling mode, obtain the first indoor pipe temperature of the evaporator, and calculate a preset The step of "the first temperature difference between the anti-freezing temperature threshold and the first indoor pipeline temperature" includes:

When the air conditioner is in the low temperature cooling mode, acquiring the first indoor pipeline temperature of the evaporator, and determining whether the first indoor pipeline temperature is not less than the anti-freezing temperature threshold;

If the temperature of the first indoor pipeline is not less than the anti-freezing temperature threshold, calculating the first temperature difference between the anti-freezing temperature threshold and the temperature of the first indoor pipeline; and if the first indoor pipeline If the circuit temperature is less than the anti-freezing temperature threshold, the entire air conditioner is controlled to stop running.
An air conditioner, wherein the air conditioner includes a memory, a processor, and a cooling control program of the air conditioner stored in the memory and running on the processor, and the cooling control program of the air conditioner is controlled by the processor. When executed, the refrigeration control method of the air conditioner according to any one of claims 1-8 is realized.
A computer-readable storage medium, wherein the computer-readable storage medium includes a refrigeration control program of an air conditioner, and when the refrigeration control program of the air conditioner is executed by a processor, the refrigeration control program of the air conditioner is implemented as described in any one of claims 1-8 The refrigeration control method of the air conditioner.