WO2022227186A1 - Control method and apparatus for air conditioner, air conditioner and storage medium - Google Patents

Abstract

The present application relates to the technical field of air conditioners, and provides a control method and apparatus for an air conditioner, the air conditioner, and a storage medium. The method comprises: when detecting that the air conditioner enters a heating mode, first acquiring the current outdoor temperature of the outdoor environment where the air conditioner is located; controlling a compressor to start running when the current outdoor temperature is greater than preset outdoor temperature, and acquiring a first indoor heat exchanger temperature after the compressor runs for first preset time, and then adjusting the running state of an outdoor fan of the air conditioner according to the first indoor heat exchanger temperature.

Description

Air conditioner control method, device, air conditioner, and storage medium

This application claims the priority of the Chinese patent application filed on April 28, 2021, the application number is 202110470686.0, and the title is "Control Method, Device, Air Conditioner and Storage Medium for Air Conditioner", which is hereby incorporated by reference in its entirety .

technical field

The present application relates to the technical field of air conditioners, and in particular, to a control method, device, air conditioner, and storage medium of an air conditioner.

Background technique

Today's air-conditioning manufacturers optimize the system through technology upgrades, switch environmentally friendly refrigerants, and achieve technological cost reductions to improve the cost-effectiveness and competitiveness of air-conditioning systems. Through refrigerant switching, use R32 refrigerant instead of R22 or R410a refrigerant to reduce the configuration of internal and external units and achieve technical cost reduction.

Due to the reduced configuration, the external fan and the compressor of the fixed-frequency air conditioner start at the same time, and the internal fan is in the stage of preventing cold air, especially when the outdoor temperature is relatively high, the external fan and the compressor are started at the same time, and the internal heating is at this time. The demand is small, and the compressor of the fixed-frequency air conditioner cannot reduce the heat output by unloading itself, resulting in an excessively high operating pressure of the air conditioner, which in turn leads to protection shutdown.

technical problem

The present application provides a control method, device, air conditioner and storage medium for an air conditioner, aiming to solve the technical problem that the current fixed frequency air conditioner is prone to frequent start and stop during the hot start stage of the compressor.

technical solutions

To achieve the above purpose, the present application provides a control method for an air conditioner, the method comprising:

It is determined that it is detected that the air conditioner enters the heating mode, and the current outdoor temperature of the outdoor environment where the air conditioner is located is obtained;

determining that the current outdoor temperature is greater than a preset outdoor temperature, controlling the compressor to start running, and acquiring the temperature of the first indoor heat exchanger after the compressor has been running for a first preset time; and

According to the temperature of the first indoor heat exchanger, the operating state of the outdoor fan of the air conditioner is adjusted.

Optionally, the step of adjusting the operating state of the outdoor fan of the air conditioner according to the temperature of the first indoor heat exchanger includes:

It is determined that the temperature of the first indoor heat exchanger is less than or equal to the first preset temperature, and the first outdoor fan and the second outdoor fan of the air conditioner are controlled to start running, wherein the first outdoor fan and the second outdoor fan are both It is a fan arranged at the outdoor heat exchanger of the air conditioner.

Optionally, the step of adjusting the operating state of the outdoor fan of the air conditioner according to the temperature of the first indoor heat exchanger includes:

It is determined that the temperature of the first indoor heat exchanger is greater than the first preset temperature, and the temperature of the first indoor heat exchanger is less than the second preset temperature, then control the first outdoor fan of the air conditioner or the second outdoor fan of the air conditioner. The fan starts running.

Optionally, after the step of adjusting the operating state of the outdoor fan of the air conditioner according to the temperature of the first indoor heat exchanger, the method further includes:

Obtain the temperature of the second indoor heat exchanger after the air conditioner operates in the adjusted operating state of the outdoor fan for a second preset time, and use the temperature of the second indoor heat exchanger as the temperature of the first indoor heat exchanger ;as well as

Continue to perform the step of adjusting the operating state of the outdoor fan of the air conditioner according to the temperature of the first indoor heat exchanger.

Optionally, the continuing to perform the step of adjusting the operating state of the outdoor fan of the air conditioner according to the temperature of the first indoor heat exchanger further includes:

Determine that the temperature of the first indoor heat exchanger is less than or equal to the first preset temperature, then increase the rotational speed of the first outdoor fan and the rotational speed of the second outdoor fan of the air conditioner;

If it is determined that the temperature of the first indoor heat exchanger is greater than or equal to the second preset temperature, the first outdoor fan and the second outdoor fan of the air conditioner are controlled to stop running.

Optionally, the continuing to perform the step of adjusting the operating state of the outdoor fan of the air conditioner according to the temperature of the first indoor heat exchanger further includes:

It is determined that the temperature of the first indoor heat exchanger is less than or equal to the first preset temperature, and then it is determined whether the rotation speed of the outdoor fan of the air conditioner reaches a preset limit rotation speed;

If it is determined that the rotational speed of the outdoor fan of the air conditioner reaches a preset limit rotational speed, the rotational speed of the indoor fan of the air conditioner is reduced.

Optionally, the continuing to perform the step of adjusting the operating state of the outdoor fan of the air conditioner according to the temperature of the first indoor heat exchanger further includes:

If it is determined that the temperature of the first indoor heat exchanger is greater than or equal to the second preset temperature, the rotational speed of the indoor fan of the air conditioner is increased.

Optionally, after the step of acquiring the current outdoor temperature of the outdoor environment where the air conditioner is located when it is detected that the air conditioner enters the heating mode, the method further includes:

It is determined that the current outdoor temperature is less than or equal to the preset outdoor temperature, the compressor is controlled to start operation, and the first outdoor fan and the second outdoor fan of the air conditioner are controlled to start operation.

In addition, in order to achieve the above purpose, the present application also provides a control device for an air conditioner, and the control device for the air conditioner includes:

an acquisition module, which acquires the current outdoor temperature of the outdoor environment where the air conditioner is located when it is detected that the air conditioner enters the heating mode;

a control module, configured to control the compressor to start running when the current outdoor temperature is greater than the preset outdoor temperature, and obtain the temperature of the first indoor heat exchanger after the compressor runs for a first preset time; and

The adjustment module is configured to adjust the operation state of the outdoor fan of the air conditioner according to the temperature of the first indoor heat exchanger.

In addition, in order to achieve the above object, the present application also provides an air conditioner, the air conditioner includes a processor, a memory, and a control program of the air conditioner stored in the memory, and the control program of the air conditioner is processed by the When the air conditioner is running, the steps of the control method of the air conditioner as described above are realized.

In addition, in order to achieve the above object, the present application also provides a computer storage medium, where a control program of an air conditioner is stored on the computer storage medium, and when the control program of the air conditioner is run by a processor, the above-mentioned air conditioner control program is realized. The steps of the control method.

beneficial effect

Compared with the related art, the present application provides a control method for an air conditioner, by controlling the fixed-frequency compressor to start running when it is detected that the air conditioner enters the heating mode, and obtaining the outdoor temperature of the current outdoor environment where the air conditioner is located; When the outdoor temperature is greater than the preset outdoor temperature, the temperature of the first indoor heat exchanger after the compressor runs for the first preset time is obtained; according to the temperature of the first indoor heat exchanger, the state of the outdoor fan of the air conditioner is adjusted. In the application, when the outdoor temperature is relatively high, the compressor of the air conditioner and the outdoor fan of the air conditioner are controlled to start non-simultaneously, and the operating state of the external fan is regulated according to the temperature of the indoor heat exchanger of the air conditioner, so that the operation state of the external fan is controlled. The compressor of the air conditioner reduces the heat output through the running state of the external fan, thereby reducing the operating pressure of the air conditioner, thereby avoiding the frequent protection shutdown of the air conditioner.

Description of drawings

1 is a schematic diagram of the hardware structure of an air conditioner involved in various embodiments of the present application;

2 is a schematic structural diagram of an air conditioner involved in the control method of the air conditioner of the present application;

3 is a schematic flowchart of a first embodiment of a control method for an air conditioner of the present application;

4 is a schematic flowchart of a second embodiment of a control method for an air conditioner of the present application;

FIG. 5 is a schematic diagram of functional modules of an embodiment of a control device for an air conditioner of the present application.

Description of drawings:

label	name	label	name
1	Indoor fan	7	outdoor heat exchanger
2	Indoor heat exchanger	8	Second line temperature sensor
3	first line temperature sensor	9	The first outdoor fan
4	compressor	10	Second outdoor fan
5	Gas-liquid separator	11	first filter
6	Four-way valve	12	throttle valve
		13	second filter

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

Embodiments of the present invention

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

Referring to FIG. 1 , FIG. 1 is a schematic diagram of a hardware structure of an air conditioner according to various embodiments of the present application. In this embodiment of the present application, the air conditioner may include a processor 1001 (for example, a central processing unit Central Processing Unit, CPU), communication bus 1002 , input port 1003 , output port 1004 , memory 1005 . Among them, the communication bus 1002 is used to realize the connection communication between these components; the input port 1003 is used for data input; the output port 1004 is used for data output, and the memory 1005 can be a high-speed RAM memory or a stable memory (non-volatile memory). memory), such as a disk memory, the memory 1005 may optionally also be a storage device independent of the aforementioned processor 1001 . Those skilled in the art can understand that the hardware structure shown in FIG. 1 does not constitute a limitation to the present application, and may include more or less components than the one shown, or combine some components, or arrange different components.

Continuing to refer to FIG. 1 , the memory 1005 as a readable storage medium in FIG. 1 may include an operating system, a network communication module, an application program module and a control program of the air conditioner. In the terminal shown in FIG. 1 , the network interface 1004 is mainly used to connect to the background server and perform data communication with the background server; the user interface 1003 is mainly used to connect to the client (client) and perform data communication with the client; and the processor 1001 can be used to call the control program of the air conditioner stored in the memory 1005 .

In this embodiment, the air conditioner includes: a memory 1005, a processor 1001, and a control program of the air conditioner stored on the memory 1005 and running on the processor 1001, wherein the processor 1001 calls the memory 1005 When the control program of the air conditioner is stored, do the following:

When it is detected that the air conditioner enters the heating mode, acquiring the current outdoor temperature of the outdoor environment where the air conditioner is located;

When the current outdoor temperature is greater than the preset outdoor temperature, controlling the compressor to start running, and acquiring the temperature of the first indoor heat exchanger after the compressor has been running for a first preset time;

According to the temperature of the first indoor heat exchanger, the operating state of the outdoor fan of the air conditioner is adjusted.

Based on the hardware structure shown in FIG. 1 , a first embodiment of the present application provides a control method for an air conditioner.

It should be noted that the above-mentioned air conditioner proposed in this embodiment refers to a fixed frequency air conditioner, that is, the rotational speed of the compressor of the air conditioner is not variable, and it is a fixed frequency compressor. Specifically, refer to FIG. 2 , which is the present application. The structure diagram of the air conditioner involved, as shown in Figure 2, the air conditioner is divided into an outdoor side and an indoor side, wherein the indoor side includes an indoor fan 1, an indoor heat exchanger 2 and a No. A pipeline temperature sensor 3, wherein the indoor fan 1 is used to drive the indoor air to pass through the indoor heat exchanger, so that the indoor air exchanges heat with the refrigerant in the coil of the indoor heat exchanger, and the indoor heat exchanger 2 acts as an evaporating medium during cooling. At the end, it absorbs heat for the refrigerant. When heating, it acts as the condensing end to dissipate heat from the refrigerant. Further, the outdoor side sequentially includes a compressor 4 with a constant rotational speed, a gas-liquid separator 5, a four-way valve 6, The outdoor heat exchanger 7, the second pipeline temperature sensor 8 for detecting the temperature of the outdoor heat exchanger 7, the first outdoor fan 9, the second outdoor fan 10, are used to filter the impurities in the refrigerant pipeline of the air conditioner to avoid Impurities enter the throttling part, resulting in poor throttling effect or dirty blockage of the first filter 11, the throttling valve 12 and the impurities in the air conditioner refrigerant pipeline to prevent impurities from entering the throttling part, resulting in the throttling effect Deteriorated or dirty second filter 13 .

Among them, in this embodiment, the throttle valve 12 is composed of a cooling throttle valve and a heating throttle valve. It should be noted that the heating throttle valve plays the role of throttling and reducing the pressure when the air conditioner is heating. When the air conditioner is refrigerating, it does not have a throttling effect, that is, one-way throttling, and no throttling in the reverse direction. Similarly, the refrigeration throttle valve plays the role of throttling and reducing pressure when the air conditioner is refrigerating. When it is hot, it does not have a throttling effect, that is, one-way throttling, and no throttling in the reverse direction.

Wherein, in this embodiment, the first outdoor fan 9 is a fan arranged at the outdoor heat exchanger 7 of the air conditioner, and the second outdoor fan 10 is also a fan arranged at the outdoor heat exchanger 7 of the air conditioner, wherein, The above-mentioned outdoor fan is used to drive the outdoor air to pass through the outdoor heat exchanger 7 , so that the outdoor air exchanges heat with the refrigerant in the pipes of the outdoor heat exchanger 7 .

It should be further noted that, in this embodiment, the number of outdoor fans at the outdoor heat exchanger 7 of the air conditioner is not limited. In other words, in this embodiment, in the vertical direction of the outdoor heat exchanger 7 of the air conditioner Other outdoor fans may also be installed, which are not limited in this embodiment.

Further, in this embodiment, in order to flexibly regulate the heat dissipation of the outdoor heat exchanger, the air outlet of the above-mentioned first outdoor fan 9 can be directed to the upper part of the outdoor heat exchanger 7, so that the The outdoor air is driven to the upper area of the outdoor heat exchanger 7 for heat exchange. At the same time, the air outlet of the second outdoor fan 10 can also be directed to the lower part of the outdoor heat exchanger 7. Based on the first outdoor fan 9 and the The coordination and cooperation of the second outdoor fan 10 can achieve the purpose of flexibly regulating the heat dissipation of the outdoor heat exchanger.

It should be noted that the outdoor fans in this embodiment may be located on the same side of the outdoor heat exchanger 7, or may be located on different sides of the outdoor heat exchanger 7, which is not limited in this embodiment.

Based on the air conditioner shown in FIG. 2 , a control method of the air conditioner of the present application is proposed. Referring to FIG. 3 , FIG. 3 is a schematic flowchart of the first embodiment of the control method of the air conditioner of the present application.

The embodiments of the present application provide embodiments of the control method of the air conditioner. It should be noted that, although the logical sequence is shown in the flowchart, in some cases, the shown sequence may be executed in a different sequence than the one shown here. or the described steps.

Specifically, the control method of the air conditioner in this embodiment includes:

Step S10: when it is detected that the air conditioner enters the heating mode, obtain the current outdoor temperature of the outdoor environment where the air conditioner is located;

It should be noted that the executive body of this embodiment is the air conditioner involved in FIG. 2 above, and details are not described herein again in this embodiment.

It should be understood that the outdoor temperature can be acquired by a temperature sensor pre-installed on the outside of the air conditioner, wherein the installation position of the temperature sensor can be located at any position outside the air conditioner, such as the inside of the cabinet or the outside of the air conditioner. Externally, this embodiment does not limit this.

Step S20: when the current outdoor temperature is greater than the preset outdoor temperature, control the compressor to start running, and obtain the temperature of the first indoor heat exchanger after the compressor runs for a first preset time;

Specifically, the above-mentioned preset outdoor temperature refers to a preset specific temperature value used to distinguish the heating state of the current air conditioner, wherein the heating state refers to high-temperature heating and non-high-temperature heating, that is, when the outdoor temperature is greater than When the preset outdoor temperature is used, the air conditioner is in high temperature heating, and when the outdoor temperature is less than or equal to the preset outdoor temperature, the air conditioner is in non-high temperature heating.

It is worth noting that when the air conditioner enters the heating mode from standby mode, shutdown mode or cooling mode, the high-temperature and high-pressure gas refrigerant discharged from the compressor flows through the four-way valve and enters the indoor heat exchanger side for heat dissipation. After that, it is throttled through the heating throttle valve to form a low-temperature and low-pressure refrigerant. The refrigerant enters the outdoor heat exchanger on the outdoor side for heat absorption and evaporation, and then flows into the gas-liquid separator for vapor-liquid separation. The gaseous refrigerant returns to It circulates in the compressor, and the liquid refrigerant is stored in the gas-liquid separator. It is easy to understand that when the outdoor temperature is relatively high, due to the small heating demand inside the air conditioner, when the outdoor fan of the air conditioner is connected to the compressor. When the air conditioners are started at the same time, because the fixed-frequency compressor cannot reduce the heat output by changing the rotational speed at this time, the air conditioner is likely to have an excessively high operating pressure, and the air conditioner will be in a state of protection shutdown. Therefore, in this embodiment, the ambient temperature sensor is used first. Obtain the outdoor temperature of the outdoor environment, and then execute the corresponding control strategy according to the outdoor environment temperature.

Specifically, in practical applications, if it is detected that the outdoor temperature of the air conditioner is greater than the preset specific temperature value, it indicates that it is currently heating at high temperature. Therefore, in this embodiment, in order to avoid excessive operating pressure of the air conditioner, the The compressor enters the running state, and the outdoor fan of the air conditioner is controlled to start after the compressor starts to run for the first preset time.

Further, in order to improve the operation stability of the air conditioner, in this embodiment, when the compressor starts and runs for a first preset time, the temperature value of the indoor heat exchanger is obtained through the first pipeline temperature sensor, and then the temperature value of the indoor heat exchanger is obtained through the first pipeline temperature sensor. The temperature value is used to determine the regulation strategy of the outdoor fan of the air conditioner.

It should be understood that, the above-mentioned first preset time may be a certain preset time value, such as 10s, 15s, and the like.

It should be understood that the above-mentioned first preset time may also be the time taken for switching the refrigerant flow direction in the refrigerant pipeline of the air conditioner to the heating flow direction. The delayed start condition causes the four-way valve to actually be in a cooling state at the initial stage of the heating mode, so that the temperature of the indoor heat exchanger is in a falling stage. When the four-way valve is switched to the heating state, the refrigerant at the four-way valve collides in reverse. , the temperature of the indoor heat exchanger rises slowly, so that the pressure of the air conditioner gradually increases, which in turn causes the compressor to stop. Therefore, in this embodiment, after the compressor runs for the first preset time, the first pipeline temperature sensor is used to obtain the temperature sensor. The temperature value of the indoor heat exchanger, so as to execute the corresponding control strategy according to the temperature value.

Step S30: Adjust the operating state of the outdoor fan of the air conditioner according to the temperature of the first indoor heat exchanger.

Specifically, the above-mentioned outdoor fan refers to the fan in the outdoor area of the air conditioner, such as the first outdoor fan or the second outdoor fan as shown in FIG. Other outdoor fans other than those shown are not limited in this embodiment, and this embodiment is described with the outdoor fan shown in FIG. 3 as a representative.

In this step, since the outdoor heat exchanger is located between the air outlet of the first outdoor fan and the air suction port of the second outdoor fan, the outdoor air flowing through the outdoor heat exchanger can be adjusted by adjusting the operating state of the outdoor fan The air volume is adjusted to adjust the heat exchange of the outdoor heat exchanger, thereby achieving the purpose of adjusting the operating pressure of the air conditioner.

Specifically, in practical applications, the temperature of the indoor heat exchanger is first in the stage of falling and then in the stage of slowly rising due to the delayed start of the four-way valve due to the hot-start stage of the compressor. When the temperature of the first indoor heat exchanger (that is, the temperature value obtained by the first pipeline temperature sensor) reaches the start-up operation condition of the outdoor fan, for example, the first preset temperature is 48°C, when the indoor heat exchanger is detected When the temperature value of the heater temperature is less than the first preset temperature of 48°C, it is determined that the operating condition for starting the outdoor fan is reached. In addition, when the temperature value of the indoor heat exchanger temperature is detected to be 48°C, which is equal to the first preset temperature of 48°C When it is also determined that the outdoor fan start-up operation condition is reached, when the temperature of the indoor heat exchanger reaches the outdoor fan start-up operation condition, the above two outdoor fans of the air conditioner are controlled to start operation at the same time.

Specifically, the above-mentioned first preset temperature is used to measure whether the heat exchange of the outdoor heat exchanger is low. The coil temperature is low, and the air outlet temperature at the air outlet of the air conditioner is low, so the outdoor heat exchanger needs to strengthen the absorption of heat and transfer it to the indoor heat exchanger, so that the air outlet temperature at the air outlet of the air conditioner can meet user requirements.

Therefore, in this embodiment, when the temperature of the first indoor heat exchanger reaches the start-up condition of the outdoor fan, the first outdoor fan and the second outdoor fan start to operate at the same time, thereby driving a large amount of outdoor air to flow through the outdoor through the simultaneously running outdoor fans heat exchanger, thereby enhancing the heat absorbed by the outdoor heat exchanger.

In an application scenario, in order to improve the heat exchange efficiency, the air suction port of the second outdoor fan is opposite to the air outlet of the first outdoor fan, and the outdoor heat exchanger is located between the air outlet of the first outdoor fan and the second outdoor fan. Between the suction ports of the second outdoor fan, a cooling air duct is formed between the suction port of the second outdoor fan and the exhaust port of the first outdoor fan, and the outdoor heat exchanger is located on the cooling air duct, so that the second outdoor fan can pass through the cooling air duct. Under the action of the suction force of the first outdoor fan, all the air discharged from the first outdoor fan flows through the cooling air duct, thereby greatly improving the heat exchange efficiency of the outdoor heat exchanger.

Further, in order to avoid that the outdoor heat exchanger absorbs too much heat and causes the air conditioner to have strong heat exchange when the above-mentioned two outdoor fans are started to operate at the same time to enhance the heat absorbed by the outdoor heat exchanger, in this step, the above two can be controlled first. Each outdoor fan starts and runs at a stepped speed. For example, the stepped speed starts and runs based on the preset speed gear of the outdoor fan. For example, take the first outdoor fan as an example. The first outdoor fan is divided into the lowest speed gear in order. When the first outdoor fan is started to run for the first time, the first outdoor fan is controlled to start at the lowest gear, and when it is detected again that the heat absorbed by the outdoor heat exchanger needs to be strengthened, the first outdoor fan is controlled. The fans start running at mid-range, and so on.

Further, in order to improve the accuracy of air conditioner regulation, when the above two outdoor fans are activated at the same time, the rotational speed of the above two outdoor fans can be reduced as the temperature of the first indoor heat exchanger increases. An example of an outdoor fan, after it is detected that the temperature of the first indoor heat exchanger reaches the operating condition of the outdoor fan, and the temperature difference between the temperature of the first indoor heat exchanger and the first preset temperature is calculated to be 5°C, then Control the first outdoor fan to start running at 40rpm/min. When the temperature difference is 10°C, control the first outdoor fan to start running at 80rpm/min. When the temperature difference is 15°C, control the first outdoor fan to run at 120rpm/min. min starts running, and so on.

In another application scenario, performing the above step S30 further includes: if the temperature of the first indoor heat exchanger is greater than or equal to the second preset temperature, controlling the outdoor fan of the air conditioner to stop running.

Specifically, the above-mentioned second preset temperature is used to measure whether the heat exchange of the outdoor heat exchanger is too high. It should be noted that when the heat exchange of the outdoor heat exchanger is too high, it indicates that the heat exchange of the current air conditioner is strong. , the operating pressure of the air conditioner is high. Therefore, in order to prevent the operating pressure of the air conditioner from continuing to rise and causing the compressor to shut down, the outdoor fan of the air conditioner can be controlled to stop running, thereby reducing the heat exchange of the outdoor heat exchanger, thereby reducing the air conditioner. operating pressure of the device.

Further, in order to improve the heating effect of the air conditioner during the stable operation of the air conditioner, when the temperature of the first indoor heat exchanger is greater than the first preset temperature, and the temperature of the first indoor heat exchanger is less than the second preset temperature, Turn on an outdoor fan, that is, turn on the first outdoor fan of the air conditioner to start running, or turn on the second outdoor fan of the air conditioner to drive a small amount of outdoor air to flow through the heat exchanger to partially exchange heat with the outdoor heat exchanger.

Further, in order to avoid that when an outdoor fan is activated to enhance the heat absorbed by the outdoor heat exchanger, the outdoor heat exchanger absorbs too much heat, which results in strong heat exchange of the air conditioner. In this step, an outdoor fan of the air conditioner can be controlled first. It should be noted that the steps of starting the operation of the external fan at the stepped rotating speed in this embodiment can be the same as the steps of starting the operation with the stepped rotating speed in the above-mentioned first embodiment, and this embodiment will not be repeated here. Repeat.

It should be understood that the above is only an example, and does not constitute any limitation to the technical solutions of the present application. Those skilled in the art can make settings based on needs in practical applications, and will not be listed one by one here.

In this embodiment, when the outdoor temperature is relatively high, the compressor is first controlled to start running, and then the external fan is regulated according to the temperature of the indoor heat exchanger, thereby controlling the compressor and the external fan to start non-simultaneously, and through The regulation of the outdoor fan can reduce the heat output, thereby reducing the operating pressure of the air conditioner, thereby avoiding the frequent protection shutdown of the air conditioner.

Further, based on the first embodiment of the air conditioner control method of the air conditioner of the present application, a second embodiment of the air conditioner control method of the present application is proposed.

Referring to FIG. 4 , FIG. 4 is a schematic flowchart of a second embodiment of an electronically controlled cooling method for an air conditioner of the present application;

The difference between the second embodiment of the electronically controlled cooling method for the air conditioner and the first embodiment of the electronically controlled cooling method for the air conditioner is that after the above step S30, the method further includes:

Step S40: Obtain the temperature of the second indoor heat exchanger after the air conditioner operates in the adjusted operating state of the outdoor fan for a second preset time, and use the temperature of the second indoor heat exchanger as the first indoor heat exchanger. heater temperature;

Step S50: Continue to perform the step of adjusting the operating state of the outdoor fan of the air conditioner according to the temperature of the first indoor heat exchanger.

Specifically, the second preset time may be a preset specific time value, such as 10s, 20s, etc., wherein the second preset time may be the same as the first preset time in the first embodiment. is equal to or may not be equal to the first preset time in the above-mentioned first embodiment, which is not limited in this embodiment.

In this step, it should be understood that in order to prevent the compressor from starting and stopping frequently during operation, after obtaining the temperature of the indoor heat exchanger, the above steps are continued, so that the operating pressure of the air conditioner is within the normal operating pressure range by executing the above steps. .

In addition, it should be noted that the external fan will be adjusted after the air conditioner enters the heating mode. Therefore, before the external fan is adjusted again, there are at least three states of the external fan of the air conditioner: both of the above-mentioned external fans are running. state, the first outdoor fan or the second outdoor fan is in the running state, and both the above-mentioned two outdoor fans are in the stopped running state, so in this embodiment, when the above step S50 is executed, this embodiment is based on the temperature of the first indoor heat exchanger. The above steps are divided into three cases for specific description.

The first case: if the temperature of the first indoor heat exchanger is less than or equal to the first preset temperature.

In this step, if it is detected that the above two outdoor fans are currently running, for example, one outdoor fan starts to run at 40 rpm/min, and the other outdoor fan starts to run at 80 rpm/min, the external fan that starts to run at 40 rpm/min can be used. The fan was increased to 80 rpm/min, and at the same time, the outdoor fan that started running at 80 rpm/min was increased to 120 rpm/min.

It should be further noted that when increasing the speed of the outdoor fan, it is necessary to first determine whether the speed of the outdoor fan of the air conditioner reaches the preset limit speed, that is, whether the current speed of the outdoor fan can continue to increase, if the current speed of the outdoor fan cannot continue. If it increases, the rotation speed of the indoor fan of the air conditioner will be reduced.

Specifically, the above-mentioned preset rotational speed limit refers to the maximum rotational speed of the outdoor fan. It is easy to understand that when the rotational speed of the outdoor fan of the air conditioner cannot continue to increase, in this embodiment, the rotational speed of the indoor fan can also be reduced to reduce the number of indoor fans. The heat dissipation of the heat exchanger, thereby increasing the coil temperature of the indoor heat exchanger.

In addition, in some embodiments, if it is detected that neither of the above two outdoor fans is currently in an operating state, the two outdoor fans are controlled to start running. It should be noted that in this embodiment, the above two outdoor fans are controlled The step of starting and running each outdoor fan is the same as the step S30 in the above-mentioned first embodiment, which is not repeated in this embodiment.

Further, in some embodiments, if it is detected that one of the two outdoor fans is currently in the running state, for example, the first outdoor fan is in the running state, or both the second outdoor fans are in the running state, then in this case It can be by turning on another outdoor fan that is in a shutdown state to start running, and when controlling another outdoor fan to start running, it can be controlling the outdoor fan to start running at a stepped speed, or it can be based on the current running state. The running speed of the outdoor fan determines the speed at which another outdoor fan starts to run.

For ease of understanding, this embodiment illustrates the above steps of controlling another outdoor fan to start and run as an example.

For example, when the first preset temperature is 48°C and the second preset temperature is 54°C, the first outdoor fan of the air conditioner is currently in a stopped operation state, and the second outdoor fan is running at a mid-range speed of 80 rpm/min. When the temperature is between 48°C and 54°C, for the control of the first outdoor fan, in this embodiment, the first outdoor fan can be started at the lowest speed of 40 rpm/min, or the first outdoor fan can be controlled at a speed of 40 rpm/min. The same rotational speed as the second outdoor fan is 80 rpm/min, which is not limited in this embodiment.

The second case: if the temperature of the first indoor heat exchanger is greater than the first preset temperature, and the temperature of the first indoor heat exchanger is less than the second preset temperature.

In this step, when it is detected that the first outdoor fan is in a running state and the second outdoor fan is in a stopped state, the rotational speed of the first outdoor fan of the air conditioner is increased, or when it is detected that the second outdoor fan is in a running state , when the first outdoor fan is in a shutdown state, the rotational speed of the second outdoor fan is increased.

In addition, in another application scenario, if it is detected that the above two outdoor fans of the air conditioner are in a stopped operation state, one of the outdoor fans can be driven to start operation. It should be noted that, the step of starting the operation of the outdoor fan in this embodiment is the same as the step S30 in the above-mentioned first embodiment, which will not be repeated in this embodiment.

The third situation: if the temperature of the first indoor heat exchanger is greater than or equal to the second preset temperature.

In this step, when the temperature of the indoor heat exchanger belongs to the third situation, it indicates that the heat exchange of the current outdoor heat exchanger is relatively high, the heat exchange of the current air conditioner is strong, and the operating pressure of the air conditioner is high. The operating pressure of the air conditioner continues to rise, causing the compressor to stop, and the two outdoor fans that control the air conditioner stop running, thereby reducing the heat exchange of the outdoor heat exchanger, thereby reducing the operating pressure of the air conditioner.

Further, in some embodiments, the external fan of the current air conditioner may be in a stopped operation state, in order to slow down the heat exchange of the outdoor heat exchanger, in this embodiment, the rotation speed of the internal fan of the air conditioner may be increased by This reduces the influence of the high heat exchange of the outdoor heat exchanger by increasing the heat dissipation of the indoor heat exchanger.

In this embodiment, after the air conditioner enters the heating mode, the above steps are performed cyclically again, so that the air conditioner can run stably during the operation process through multiple cycle steps, avoiding the frequent start and stop of the compressor to generate noise.

In addition, this embodiment also provides a control device for an air conditioner. Referring to FIG. 5, FIG. 5 is the present application

A schematic diagram of functional modules of an embodiment of a control device for an air conditioner.

Specifically, referring to FIG. 5 , the control device of the air conditioner includes:

The acquiring module 10 acquires the current outdoor temperature of the outdoor environment where the air conditioner is located when it is detected that the air conditioner enters the heating mode;

It should be understood that the outdoor temperature can be acquired by a temperature sensor pre-installed on the outside of the air conditioner, wherein the installation position of the temperature sensor can be located at any position outside the air conditioner, such as the inside of the cabinet or the outside of the air conditioner. Externally, this embodiment does not limit this.

The control module 20 is configured to control the compressor to start running when the current outdoor temperature is greater than the preset outdoor temperature, and obtain the temperature of the first indoor heat exchanger after the compressor runs for a first preset time;

Specifically, the above-mentioned preset outdoor temperature refers to a preset specific temperature value used to distinguish the heating state of the current air conditioner, wherein the heating state refers to high-temperature heating and non-high-temperature heating, that is, when the outdoor temperature is greater than When the preset outdoor temperature is used, the air conditioner is in high temperature heating, and when the outdoor temperature is less than or equal to the preset outdoor temperature, the air conditioner is in non-high temperature heating.

It is worth noting that when the air conditioner enters the heating mode from standby mode, shutdown mode or cooling mode, the high-temperature and high-pressure gas refrigerant discharged from the compressor flows through the four-way valve and enters the indoor heat exchanger side for heat dissipation. After that, it is throttled through the heating throttle valve to form a low-temperature and low-pressure refrigerant. The refrigerant enters the outdoor heat exchanger on the outdoor side for heat absorption and evaporation, and then flows into the gas-liquid separator for vapor-liquid separation. The gaseous refrigerant returns to It circulates in the compressor, and the liquid refrigerant is stored in the gas-liquid separator. It is easy to understand that when the outdoor temperature is relatively high, due to the small heating demand inside the air conditioner, when the outdoor fan of the air conditioner is connected to the compressor. When the air conditioners are started at the same time, because the fixed-frequency compressor cannot reduce the heat output by changing the rotational speed at this time, the air conditioner is likely to have an excessively high operating pressure, and the air conditioner will be in a state of protection shutdown. Therefore, in this embodiment, the ambient temperature sensor is used first. The outdoor temperature of the outdoor environment is obtained, thereby executing the corresponding control strategy according to the outdoor environment temperature.

Specifically, in practical applications, if it is detected that the outdoor temperature of the air conditioner is greater than the preset specific temperature value, it indicates that it is currently heating at high temperature. Therefore, in this embodiment, in order to avoid excessive operating pressure of the air conditioner, the The compressor enters the running state, and the outdoor fan of the air conditioner is controlled to start after the compressor starts to run for the first preset time.

Further, in order to improve the operation stability of the air conditioner, in this embodiment, when the compressor starts and runs for a first preset time, the temperature value of the indoor heat exchanger is obtained through the first pipeline temperature sensor, and then the temperature value of the indoor heat exchanger is obtained through the first pipeline temperature sensor. The temperature value is used to determine the regulation strategy of the outdoor fan of the air conditioner.

It should be understood that, the above-mentioned first preset time may be a certain preset time value, such as 10s, 15s, and the like.

It should be understood that the above-mentioned first preset time may also be the time taken for switching the refrigerant flow direction in the refrigerant pipeline of the air conditioner to the heating flow direction. The delayed start condition causes the four-way valve to actually be in a cooling state at the initial stage of the heating mode, so that the temperature of the indoor heat exchanger is in a falling stage. When the four-way valve is switched to the heating state, the refrigerant at the four-way valve collides in reverse. , the temperature of the indoor heat exchanger rises slowly, so that the pressure of the air conditioner gradually increases, which in turn causes the compressor to stop. Therefore, in this embodiment, after the compressor runs for the first preset time, the first pipeline temperature sensor is used to obtain the temperature sensor. The temperature value of the indoor heat exchanger, so as to execute the corresponding control strategy according to the temperature value.

The adjustment module 30 is configured to adjust the operating state of the outdoor fan of the air conditioner according to the temperature of the first indoor heat exchanger.

Specifically, the above-mentioned outdoor fan refers to the fan in the outdoor area of the air conditioner, such as the first outdoor fan or the second outdoor fan as shown in FIG. Other outdoor fans other than those shown are not limited in this embodiment, and this embodiment is described with the outdoor fan shown in FIG. 3 as a representative.

In this step, since the outdoor heat exchanger is located between the air outlet of the first outdoor fan and the air suction port of the second outdoor fan, the outdoor air flowing through the outdoor heat exchanger can be adjusted by adjusting the operating state of the outdoor fan The air volume is adjusted to adjust the heat exchange of the outdoor heat exchanger, thereby achieving the purpose of adjusting the operating pressure of the air conditioner.

Specifically, in practical applications, the temperature of the indoor heat exchanger is first in the stage of falling and then in the stage of slowly rising due to the delayed start of the four-way valve due to the hot-start stage of the compressor. When the temperature of the first indoor heat exchanger (that is, the temperature value obtained by the first pipeline temperature sensor) reaches the start-up condition of the outdoor fan, for example, the first preset temperature is 54°C, then when the indoor heat exchanger is detected When the temperature value of the heater temperature is less than the first preset temperature of 54°C, it is determined that the operating condition for starting the outdoor fan has been reached. In addition, when it is detected that the temperature value of the indoor heat exchanger temperature is equal to the first preset temperature of 54°C, it is also determined that the temperature value has reached the first preset temperature of 54°C. If the outdoor fan is activated, when the temperature of the indoor heat exchanger reaches the outdoor fan activation condition, the two outdoor fans of the air conditioner will be activated at the same time.

Specifically, the above-mentioned first preset temperature is used to measure whether the heat exchange of the outdoor heat exchanger is low. The coil temperature is low, and the air outlet temperature at the air outlet of the air conditioner is low, so the outdoor heat exchanger needs to strengthen the absorption of heat and transfer it to the indoor heat exchanger, so that the air outlet temperature at the air outlet of the air conditioner can meet user requirements.

Therefore, in this embodiment, when the temperature of the first indoor heat exchanger reaches the start-up condition of the outdoor fan, the first outdoor fan and the second outdoor fan start to operate at the same time, thereby driving a large amount of outdoor air to flow through the outdoor through the simultaneously running outdoor fans heat exchanger, thereby enhancing the heat absorbed by the outdoor heat exchanger.

In an application scenario, in order to improve the heat exchange efficiency, the air suction port of the second outdoor fan is opposite to the air outlet of the first outdoor fan, and the outdoor heat exchanger is located between the air outlet of the first outdoor fan and the second outdoor fan. Between the suction ports of the second outdoor fan, a cooling air duct is formed between the suction port of the second outdoor fan and the exhaust port of the first outdoor fan, and the outdoor heat exchanger is located on the cooling air duct, so that the second outdoor fan can pass through the cooling air duct. Under the action of the suction force of the first outdoor fan, all the air discharged from the first outdoor fan flows through the cooling air duct, thereby greatly improving the heat exchange efficiency of the outdoor heat exchanger.

Further, in order to avoid that the outdoor heat exchanger absorbs too much heat when the above two outdoor fans are started at the same time to increase the heat absorbed by the outdoor heat exchanger, which leads to strong heat exchange of the air conditioner, in this step, both Step-by-step speed start-up operation, such as the step-by-step speed start-up operation based on the preset outdoor fan speed gear, for example, take the first outdoor fan as an example, the first outdoor fan speed gear is divided into the lowest gear, the middle gear and the highest. High-grade, when the first outdoor fan is started for the first time, the first outdoor fan is controlled to start at the lowest gear, and when it is detected that the heat absorbed by the outdoor heat exchanger needs to be strengthened again, the first outdoor fan is controlled to start at the middle gear. , and so on.

Further, in order to improve the accuracy of air conditioner regulation, when the above two outdoor fans are activated at the same time, the rotational speed of the above two outdoor fans can be reduced as the temperature of the first indoor heat exchanger increases. Take an outdoor fan as an example. After detection, the temperature difference between the temperature of the first indoor heat exchanger and the first preset temperature is calculated to be 5°C, and the first outdoor fan is controlled to start running at 40 rpm/min. When the temperature difference is 10°C, the first outdoor fan is controlled to start running at 80 rpm/min; when the temperature difference is 15°C, the first outdoor fan is controlled to start running at 120 rpm/min, and so on.

In another application scenario, performing the above step S30 further includes: if the temperature of the first indoor heat exchanger is greater than or equal to the second preset temperature, controlling the outdoor fan of the air conditioner to stop running.

Specifically, the above-mentioned second preset temperature is used to measure whether the heat exchange of the outdoor heat exchanger is too high. It should be noted that when the heat exchange of the outdoor heat exchanger is too high, it indicates that the heat exchange of the current air conditioner is strong. , the operating pressure of the air conditioner is high. Therefore, in order to prevent the operating pressure of the air conditioner from continuing to rise and causing the compressor to shut down, the outdoor fan of the air conditioner can be controlled to stop running, thereby reducing the heat exchange of the outdoor heat exchanger, thereby reducing the air conditioner. operating pressure of the device.

Further, in order to improve the heating effect of the air conditioner during the stable operation of the air conditioner, when the temperature of the first indoor heat exchanger is greater than the first preset temperature, and the temperature of the first indoor heat exchanger is less than the second preset temperature, Turn on an outdoor fan, that is, turn on the first outdoor fan of the air conditioner to start running, or turn on the second outdoor fan of the air conditioner to drive a small amount of outdoor air to flow through the heat exchanger to partially exchange heat with the outdoor heat exchanger.

In this embodiment, when the outdoor temperature is relatively high, the compressor and the outdoor fan are controlled to start non-simultaneously, and the external fan is regulated according to the temperature of the indoor heat exchanger, so that the compressor can reduce heat through the regulation of the outdoor fan The output of the air conditioner reduces the operating pressure of the air conditioner, thereby avoiding the frequent protection shutdown of the air conditioner.

In addition, an embodiment of the present application also provides a computer storage medium, where a control program of an air conditioner is stored on the computer storage medium, and when the control program of the air conditioner is run by a processor, the above-mentioned control method of the air conditioner is realized. The steps are not repeated here.

It should be noted that, herein, the terms "comprising", "comprising" or any other variation thereof are intended to encompass non-exclusive inclusion, such that a process, method, article or system comprising a series of elements includes not only those elements, It also includes other elements not expressly listed or inherent to such a process, method, article or system. Without further limitation, an element qualified by the phrase "comprising a..." does not preclude the presence of additional identical elements in the process, method, article or system that includes the element.

The above-mentioned serial numbers of the embodiments of the present application are only for description, and do not represent the advantages or disadvantages of the embodiments.

From the description of the above embodiments, those skilled in the art can clearly understand that the methods of the above embodiments can be implemented by means of software plus a necessary general hardware platform, and of course hardware can also be used, but in many cases the former is better implementation. Based on this understanding, the technical solutions of the present application can be embodied in the form of software products in essence or the parts that make contributions to the prior art. The computer software products are stored in a storage medium (such as ROM/RAM) as described above. , magnetic disk, optical disk), including several instructions to make a terminal device execute the method described in each embodiment of the present application.

The above descriptions are only preferred embodiments of the present application, and are not intended to limit the scope of the patent of the present application. Any equivalent structure or process transformation made by using the contents of the description and drawings of the present application, or directly or indirectly applied in other related technical fields , are similarly included within the scope of patent protection of this application.

Claims (11)

1. A control method of an air conditioner, wherein the method comprises:

   It is determined that it is detected that the air conditioner enters the heating mode, and the current outdoor temperature of the outdoor environment where the air conditioner is located is obtained;

   determining that the current outdoor temperature is greater than a preset outdoor temperature, controlling the compressor to start running, and acquiring the temperature of the first indoor heat exchanger after the compressor has been running for a first preset time; and

   According to the temperature of the first indoor heat exchanger, the operating state of the outdoor fan of the air conditioner is adjusted.
2. The control method of an air conditioner according to claim 1, wherein the step of adjusting the operating state of the outdoor fan of the air conditioner according to the temperature of the first indoor heat exchanger comprises:

   It is determined that the temperature of the first indoor heat exchanger is less than or equal to the first preset temperature, and the first outdoor fan and the second outdoor fan of the air conditioner are controlled to start running, wherein the first outdoor fan and the second outdoor fan are both It is a fan arranged at the outdoor heat exchanger of the air conditioner.
3. The control method of an air conditioner according to claim 1, wherein the step of adjusting the operating state of the outdoor fan of the air conditioner according to the temperature of the first indoor heat exchanger comprises:

   It is determined that the temperature of the first indoor heat exchanger is greater than the first preset temperature, and the temperature of the first indoor heat exchanger is less than the second preset temperature, then control the first outdoor fan of the air conditioner or the second outdoor fan of the air conditioner. The fan starts running.
4. The method for controlling an air conditioner according to claim 1, wherein after the step of adjusting the operating state of the outdoor fan of the air conditioner according to the temperature of the first indoor heat exchanger, the method further comprises:

   Obtain the temperature of the second indoor heat exchanger after the air conditioner operates in the adjusted operating state of the outdoor fan for a second preset time, and use the temperature of the second indoor heat exchanger as the temperature of the first indoor heat exchanger ;as well as

   Continue to perform the step of adjusting the operating state of the outdoor fan of the air conditioner according to the temperature of the first indoor heat exchanger.
5. The control method for an air conditioner according to claim 4, wherein the step of continuing to perform the step of adjusting the operating state of the outdoor fan of the air conditioner according to the temperature of the first indoor heat exchanger further comprises:

   Determine that the temperature of the first indoor heat exchanger is less than or equal to the first preset temperature, then increase the rotational speed of the first outdoor fan and the rotational speed of the second outdoor fan of the air conditioner;

   If it is determined that the temperature of the first indoor heat exchanger is greater than or equal to the second preset temperature, the first outdoor fan and the second outdoor fan of the air conditioner are controlled to stop running.
6. The control method for an air conditioner according to claim 4, wherein the step of continuing to perform the step of adjusting the operating state of the outdoor fan of the air conditioner according to the temperature of the first indoor heat exchanger further comprises:

   It is determined that the temperature of the first indoor heat exchanger is less than or equal to the first preset temperature, and then it is determined whether the rotation speed of the outdoor fan of the air conditioner reaches a preset limit rotation speed;

   If it is determined that the rotational speed of the outdoor fan of the air conditioner reaches a preset limit rotational speed, the rotational speed of the indoor fan of the air conditioner is reduced.
7. The control method for an air conditioner according to claim 4, wherein the step of continuing to perform the step of adjusting the operating state of the outdoor fan of the air conditioner according to the temperature of the first indoor heat exchanger further comprises:

   If it is determined that the temperature of the first indoor heat exchanger is greater than or equal to the second preset temperature, the rotational speed of the indoor fan of the air conditioner is increased.
8. The control method for an air conditioner according to any one of claims 1 to 7, wherein after the step of acquiring the current outdoor temperature of the outdoor environment where the air conditioner is located when it is detected that the air conditioner enters the heating mode, Also includes:

   It is determined that the current outdoor temperature is less than or equal to the preset outdoor temperature, the compressor is controlled to start operation, and the first outdoor fan and the second outdoor fan of the air conditioner are controlled to start operation.
9. A control device for an air conditioner, wherein the control device for an air conditioner includes:

   an acquisition module, which acquires the current outdoor temperature of the outdoor environment where the air conditioner is located when it is detected that the air conditioner enters the heating mode;

   a control module, configured to control the compressor to start running when the current outdoor temperature is greater than the preset outdoor temperature, and obtain the temperature of the first indoor heat exchanger after the compressor runs for a first preset time; and

   The adjustment module is configured to adjust the operation state of the outdoor fan of the air conditioner according to the temperature of the first indoor heat exchanger.
10. An air conditioner, wherein the air conditioner includes a processor, a memory, and a control program of the air conditioner stored in the memory, and when the control program of the air conditioner is run by the processor, the control program of claim 1 is implemented. -A step of the control method of an air conditioner according to any one of 8.
11. A computer storage medium, wherein a control program of an air conditioner is stored on the computer storage medium, and when the control program of the air conditioner is run by a processor, the control program of the air conditioner according to any one of claims 1-8 is realized. The steps of the control method.