1. A method of controlling an air conditioner, comprising:

acquiring working parameters representing the pressure state of a compressor pipeline;

and starting the compressor if the compressor pipeline is determined to meet the starting condition based on the working parameters.

2. The method of claim 1, wherein the operating parameters comprise: the first temperature of the heat exchanger on the side of the air conditioner and the second temperature at the air inlet of the air conditioner, and the determining that the compressor pipeline meets the starting condition based on the working parameters comprises the following steps:

and determining that the absolute value of the difference between the first temperature and the second temperature is less than or equal to a first threshold value, and determining that the compressor pipeline meets the starting condition.

3. The method of claim 1, wherein the operating parameters comprise: the third temperature of the heat exchanger on the side of the air conditioner external unit and the fourth temperature of the air outlet of the air conditioner external unit, and the determining that the compressor pipeline meets the starting condition based on the working parameters comprises the following steps:

and determining that the absolute value of the difference between the third temperature and the fourth temperature is less than or equal to a second threshold value, and determining that the compressor pipeline meets the starting condition.

4. The method of claim 1, wherein the operating parameters comprise: the temperature control method comprises the following steps of (1) enabling a first temperature of a heat exchanger on the side of an air conditioner internal unit, a second temperature of an air outlet of the air conditioner internal unit, a third temperature of the heat exchanger on the side of the air conditioner external unit and a fourth temperature of the air outlet of the air conditioner external unit to be higher than the first temperature; the determining that the compressor circuit meets a start-up condition based on the operating parameter comprises:

and determining that the absolute value of the difference between the first temperature and the second temperature is less than or equal to a first threshold value and the absolute value of the difference between the third temperature and the fourth temperature is less than or equal to a second threshold value, and determining that the compressor pipeline meets the starting condition.

5. The method of claim 1, wherein the operating parameters comprise: at least one of a compressor exhaust temperature, a second temperature at an air inlet of an air conditioner internal unit, and a fourth temperature at an air inlet of an air conditioner external unit, wherein determining that the compressor pipeline meets the starting condition based on the working parameters comprises:

determining that an absolute value of a difference between the compressor discharge temperature and the second temperature is less than a third threshold; and/or;

determining that an absolute value of a difference between the compressor discharge temperature and the fourth temperature is less than a fourth threshold; the compressor pipeline is determined to meet the starting condition.

6. The method of claim 1, wherein the operating parameters comprise: a compressor suction pressure and/or a compressor discharge pressure, said determining that the compressor circuit meets a start-up condition based on the operating parameter comprising:

determining that the suction pressure of the compressor falls into a first pressure interval; and/or the presence of a gas in the gas,

determining that the compressor discharge pressure falls within a second pressure interval; the compressor pipeline is determined to meet the starting condition.

7. The method of claim 1, further comprising:

and determining whether the waiting time length reaches a set time length or not based on the working parameters when the compressor pipeline is determined not to meet the starting conditions, if not, continuing to determine whether the compressor pipeline meets the starting conditions or not based on the current working parameters until the compressor pipeline is determined to meet the starting conditions or the waiting time length reaches the set time length, and starting the compressor.

8. The method of claim 7, wherein after said determining that said compressor circuit is not in compliance with a start-up condition based on said operating parameter, said method further comprises:

starting a fan of the air conditioner and/or increasing the opening degree of an expansion valve on a compressor pipeline.

9. The method of claim 1, further comprising:

acquiring a gear instruction, and determining the target frequency of the compressor operation and/or the target rotating speed of the fan operation based on the gear instruction.

10. The method of claim 1, further comprising:

and responding to a shutdown instruction, controlling the compressor to shut down, determining that the compressor pipeline meets shutdown conditions, and controlling the fan of the air conditioner to shut down.

11. A control apparatus of an air conditioner, comprising:

the acquisition module is used for acquiring working parameters representing the pressure state of the compressor pipeline;

and the control module is used for determining that the compressor pipeline meets the starting condition based on the working parameters, and then starting the compressor.

12. An air conditioner, comprising: a processor and a memory for storing a computer program capable of running on the processor, wherein,

the processor, when executing the computer program, is adapted to perform the steps of the method of any of claims 1 to 10.

13. A storage medium having a computer program stored thereon, wherein the computer program, when executed by a processor, performs the steps of the method of any one of claims 1 to 10.

Background

Air conditioners have been widely used as electric appliances for adjusting ambient temperature. In the related art, a certain starting interval is required between two adjacent starting of a compressor of an air conditioner to release the pressure of a cooling or heating system, and the starting interval is often fixedly set, for example, set to three minutes, so as to avoid hardware damage caused by failed starting of the compressor or current overcurrent impact. However, although the start interval with the fixed setting can meet the operation safety requirement of the compressor, the start interval lacks flexibility and affects the user experience.

Disclosure of Invention

In view of this, embodiments of the present application provide an air conditioner, a control method and apparatus for the air conditioner, and a storage medium, and aim to consider both the operation safety and the user experience of a compressor and improve the comfort of the air conditioner.

The technical scheme of the embodiment of the application is realized as follows:

in a first aspect, an embodiment of the present application provides a method for controlling an air conditioner, including:

acquiring working parameters representing the pressure state of a compressor pipeline;

and starting the compressor if the compressor pipeline is determined to meet the starting condition based on the working parameters.

In some embodiments, the operating parameters include: the first temperature of the heat exchanger on the side of the air conditioner and the second temperature at the air inlet of the air conditioner, and the determining that the compressor pipeline meets the starting condition based on the working parameters comprises the following steps:

and determining that the absolute value of the difference between the first temperature and the second temperature is less than or equal to a first threshold value, and determining that the compressor pipeline meets the starting condition.

In some embodiments, the operating parameters include: the third temperature of the heat exchanger on the side of the air conditioner external unit and the fourth temperature of the air outlet of the air conditioner external unit, and the determining that the compressor pipeline meets the starting condition based on the working parameters comprises the following steps:

and determining that the absolute value of the difference between the third temperature and the fourth temperature is less than or equal to a second threshold value, and determining that the compressor pipeline meets the starting condition.

In some embodiments, the operating parameters include: the temperature control method comprises the following steps of (1) enabling a first temperature of a heat exchanger on the side of an air conditioner internal unit, a second temperature of an air outlet of the air conditioner internal unit, a third temperature of the heat exchanger on the side of the air conditioner external unit and a fourth temperature of the air outlet of the air conditioner external unit to be higher than the first temperature; the determining that the compressor circuit meets a start-up condition based on the operating parameter comprises:

and determining that the absolute value of the difference between the first temperature and the second temperature is less than or equal to a first threshold value and the absolute value of the difference between the third temperature and the fourth temperature is less than or equal to a second threshold value, and determining that the compressor pipeline meets the starting condition.

In some embodiments, the operating parameters include: at least one of a compressor exhaust temperature, a second temperature at an air inlet of an air conditioner internal unit, and a fourth temperature at an air inlet of an air conditioner external unit, wherein determining that the compressor pipeline meets the starting condition based on the working parameters comprises:

determining that an absolute value of a difference between the compressor discharge temperature and the second temperature is less than a third threshold; and/or the presence of a gas in the gas,

determining that an absolute value of a difference between the compressor discharge temperature and the fourth temperature is less than a fourth threshold; the compressor pipeline is determined to meet the starting condition.

In some embodiments, the operating parameters include: a compressor suction pressure and/or a compressor discharge pressure, said determining that the compressor circuit meets a start-up condition based on the operating parameter comprising:

determining that the suction pressure of the compressor falls into a first pressure interval; and/or the presence of a gas in the gas,

determining that the compressor discharge pressure falls within a second pressure interval; the compressor pipeline is determined to meet the starting condition.

In some embodiments, the method further comprises:

and determining whether the waiting time length reaches a set time length or not based on the working parameters when the compressor pipeline is determined not to meet the starting conditions, if not, continuing to determine whether the compressor pipeline meets the starting conditions or not based on the current working parameters until the compressor pipeline is determined to meet the starting conditions or the waiting time length reaches the set time length, and starting the compressor.

In some embodiments, after determining that the compressor circuit is not in compliance with a start-up condition based on the operating parameter, the method further comprises:

starting a fan of the air conditioner and/or increasing the opening degree of an expansion valve on a compressor pipeline.

In some embodiments, the method further comprises:

acquiring a gear instruction, and determining the target frequency of the compressor operation and/or the target rotating speed of the fan operation based on the gear instruction.

In some embodiments, the method further comprises:

and responding to a shutdown instruction, controlling the compressor to shut down, determining that the compressor pipeline meets shutdown conditions, and controlling the fan of the air conditioner to shut down.

In a second aspect, an embodiment of the present application further provides a control device for an air conditioner, including:

the acquisition module is used for acquiring working parameters representing the pressure state of the compressor pipeline;

and the control module is used for determining that the compressor pipeline meets the starting condition based on the working parameters, and then starting the compressor.

In a third aspect, an embodiment of the present application further provides an air conditioner, including: a processor and a memory for storing a computer program capable of running on the processor, wherein the processor, when running the computer program, is configured to perform the steps of the method according to an embodiment of the present application.

In a fourth aspect, the present application further provides a storage medium, where a computer program is stored on the storage medium, and when the computer program is executed by a processor, the steps of the method in the embodiments of the present application are implemented.

According to the technical scheme provided by the embodiment of the application, the working parameters representing the pressure state of the compressor pipeline are obtained; and starting the compressor if the compressor pipeline is determined to meet the starting condition based on the working parameters. Different from the traditional compressor that starts based on fixed start-up interval, can judge whether the compressor pipeline accords with the start-up condition based on operating parameter to can follow the change of air conditioner load condition and adjust the start-up interval, and then compromise the operation security and the user experience of compressor, promote the travelling comfort of air conditioner.

Drawings

FIG. 1 is a schematic flow chart illustrating a control method of an air conditioner according to an embodiment of the present disclosure;

FIG. 2 is a schematic flow chart illustrating a control method of an exemplary air conditioner according to an embodiment of the present disclosure;

FIG. 3 is a flow chart illustrating a control method of an air conditioner according to another exemplary embodiment of the present disclosure;

FIG. 4 is a schematic structural diagram of a control device of an air conditioner according to an embodiment of the present application;

fig. 5 is a schematic structural diagram of an air conditioner according to an embodiment of the present application.

Detailed Description

The present application will be described in further detail with reference to the following drawings and examples.

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

The embodiment of the application provides a control method of an air conditioner, and the air conditioner is used for adjusting the temperature, the humidity and the like of an environment. The air conditioner can be a single-cooling air conditioner or a cooling and heating dual-purpose air conditioner, and the air conditioner can be in the form of a wall-mounted air conditioner, a cabinet air conditioner, a window air conditioner or a ceiling air conditioner, and the like, and the embodiment of the application is not particularly limited to this.

It can be understood that the air conditioner includes an air conditioner external unit and an air conditioner internal unit, which may be separate structures, for example, the air conditioner internal unit is disposed indoors and the air conditioner external unit is disposed outdoors. The air conditioner external unit and the air conditioner internal unit can also be of integrated structures, namely the air conditioner internal unit and the air conditioner external unit are arranged together to form an integrated air conditioner such as a mobile air conditioner, a portable air conditioner, a window air conditioner and the like. It should be noted that, for the integrated air conditioner, it has advantages such as convenient installation and removal, but because the distance of condenser and evaporimeter is close, can only partially refrigerate or heat, in addition, because the structure size is little, is sensitive to system load fluctuation, and is close to the user, noise, vibration, refrigeration or heating volume change etc. often directly influence user's use impression.

In the related art, after a compressor of an air conditioner is stopped, refrigerant in a pipeline cannot flow back to the compressor immediately due to a restrictor. If the compressor is started immediately, residual refrigerant exists in the pipeline, and the compressor can generate strong starting current instantly due to pipeline stress, so that the compressor generates high temperature, a protection circuit of the compressor can automatically cut off the power supply, and a coil of the compressor can be burnt out instantly when strong current is generated. Therefore, a certain starting interval is needed for the compressor of the air conditioner, the starting interval is often fixedly set, and the fixedly set starting interval can meet the operation safety requirement of the compressor, but lacks flexibility and affects user experience. Especially for the integrated air conditioner, since the size of the air conditioner is small, the pipeline pressure is quickly established and quickly released, and meanwhile, the integrated air conditioner is not friendly to users if the traditional starting interval is adopted.

Based on this, the embodiment of the present application provides a control method of an air conditioner, as shown in fig. 1, the method includes:

step 101, obtaining working parameters representing the pressure state of a compressor pipeline.

For example, the air conditioner may acquire the operating parameter based on an instruction of a failed restart, an intermittent restart, or a user restart.

The fault restart may be a restart implemented by the air conditioner based on a safety protection mechanism, for example, protection triggered by overcurrent protection of working current, overvoltage protection of working voltage, and overhigh exhaust temperature of the compressor, and the embodiment of the present application is not particularly limited thereto.

The intermittent restart may be a case where the compressor is controlled to be intermittently operated based on the ambient temperature during the operation of the fixed-frequency air conditioner.

After the user restart may be the location switch of the portable air conditioner, the air conditioner is turned on based on the instruction of the user, for example, the user needs to restart the air conditioner when moving the air conditioner from a study room to a living room.

And 102, starting the compressor if the compressor pipeline is determined to meet the starting condition based on the working parameters.

Here, the air conditioner may determine whether the compressor pipeline meets a start condition based on the acquired operating parameter, and if so, start the compressor.

It will be appreciated that the compressor can be started when the pressure in the compressor line returns to a normal level, indicating that the compressor is fully depressurized.

The control method of the embodiment of the application is different from the traditional starting method of the compressor based on the fixed starting interval, and whether the pipeline of the compressor meets the starting condition or not can be judged based on the working parameters, so that the starting interval can be adjusted along with the change of the load state of the air conditioner, the running safety and the user experience of the compressor are considered, and the comfort of the air conditioner is improved.

It should be noted that, for a fixedly set start interval, if the start interval is too short, there may be a start failure caused by the on-load start due to incomplete recovery of the pressure of the compressor pipeline, if the start interval is set to be too long, user experience is easily affected, especially for a combined air conditioner, the pipeline pressure is quickly established and quickly released, and based on a conventional start interval, the comfort of the air conditioner is affected.

The embodiment of the application judges whether the compressor pipeline accords with the starting condition or not based on the acquired working parameters, so that the starting interval can change along with the change of the load state of the air conditioner, the requirement on the operation safety of the compressor is met, the user experience can be improved, and the comfort of the air conditioner is improved.

It is understood that the air conditioner may periodically collect the operating parameters based on a set frequency, so that whether the compressor pipeline meets the starting condition may be judged based on the current operating parameters.

The following is an exemplary description of operating parameters that characterize the pressure state of the compressor circuit.

In some embodiments, the operating parameters include: the first temperature of air conditioner side heat exchanger and the second temperature of air conditioner wind gap department, it includes to foretell based on operating parameter confirms that the compressor pipeline accords with the start condition:

and determining that the absolute value of the difference between the first temperature and the second temperature is less than or equal to a first threshold value, and determining that the compressor pipeline meets the starting condition.

Illustratively, assume that the first temperature is T1, the second temperature is T2, and the first threshold is Δ T1. Taking the air conditioner working in a refrigeration mode as an example, T1 is equivalent to the temperature of an evaporator, T2 is equivalent to the ambient temperature on the side of an internal unit of the air conditioner, T1 is less than T2, if T2-T1 is less than or equal to delta T1, the condition that a pipeline of the compressor meets the starting condition is judged, namely the system pressure of the compressor is recovered to be normal, and the compressor can be directly started.

In some embodiments, the operating parameters include: the third temperature of the heat exchanger on the side of the air conditioner external unit and the fourth temperature of the air outlet of the air conditioner external unit, and the determining that the compressor pipeline meets the starting condition based on the working parameters comprises the following steps:

and determining that the absolute value of the difference between the third temperature and the fourth temperature is less than or equal to a second threshold value, and determining that the compressor pipeline meets the starting condition.

Illustratively, assume that the third temperature is T3, the fourth temperature is T4, and the second threshold is Δ T2. Taking the air conditioner working in a refrigeration mode as an example, T3 is equivalent to the temperature of a condenser, T4 is equivalent to the ambient temperature on the side of an outdoor unit of the air conditioner, T4 is less than T3, if T3-T4 is less than or equal to delta T2, the condition that a pipeline of the compressor meets the starting condition is judged, namely the system pressure of the compressor is recovered to be normal, and the compressor can be directly started.

In some embodiments, the operating parameters include: the temperature control method comprises the following steps of (1) enabling a first temperature of a heat exchanger on the side of an air conditioner internal unit, a second temperature of an air outlet of the air conditioner internal unit, a third temperature of the heat exchanger on the side of the air conditioner external unit and a fourth temperature of the air outlet of the air conditioner external unit to be higher than the first temperature; the determining that the compressor pipeline meets the starting condition based on the working parameters comprises:

and determining that the absolute value of the difference between the first temperature and the second temperature is less than or equal to a first threshold value and the absolute value of the difference between the third temperature and the fourth temperature is less than or equal to a second threshold value, and determining that the compressor pipeline meets the starting condition.

Exemplarily, assume the first temperature is T1, the second temperature is T2, and the first threshold is Δ T1; the third temperature is T3, the fourth temperature is T4, and the second threshold is Δ T2. Taking the air conditioner working in a refrigeration mode as an example, T1 is equivalent to the temperature of an evaporator, T2 is equivalent to the temperature of the environment on the side of an air conditioner internal unit, T3 is equivalent to the temperature of a condenser, T4 is equivalent to the temperature of the environment on the side of an air conditioner external unit, if T2-T1 is less than or equal to delta T1 and T3-T4 is less than or equal to delta T2, the condition that a compressor pipeline meets the starting condition is judged, namely the system pressure of the compressor is recovered to be normal, and the compressor can be directly started.

It should be noted that the first threshold and the second threshold may be reasonably determined based on experimental data of the operation of the air conditioner. The first temperature, the second temperature, the third temperature and the fourth temperature can be collected based on corresponding temperature sensors, and the air conditioner can receive the temperature collected by each temperature sensor and further obtain the first temperature, the second temperature, the third temperature and the fourth temperature.

In some embodiments, the operating parameters include: at least one of the exhaust temperature of the compressor, the second temperature at the air inlet of the air conditioner and the fourth temperature at the air inlet of the air conditioner external unit, wherein the determination that the pipeline of the compressor meets the starting condition based on the working parameters comprises:

determining that an absolute value of a difference between the compressor discharge temperature and the second temperature is less than a third threshold; and/or the presence of a gas in the gas,

determining that an absolute value of a difference between the compressor discharge temperature and the fourth temperature is less than a fourth threshold; the compressor pipeline is judged to meet the starting condition.

It should be noted that the third threshold and the fourth threshold may be reasonably determined based on experimental data of the operation of the air conditioner. The air conditioner can also acquire the exhaust temperature of the compressor based on a temperature sensor, and the air conditioner receives the exhaust temperature of the compressor acquired by the temperature sensor to further acquire the exhaust temperature of the compressor.

It will be appreciated that if it is determined that the absolute value of the difference between the compressor discharge temperature and the second temperature is less than the third threshold value; and/or determining that the absolute value of the difference between the exhaust temperature of the compressor and the fourth temperature is smaller than a fourth threshold value, judging that the system pressure of the compressor is recovered to be normal, and directly starting the compressor.

In some embodiments, the operating parameters include: the compressor suction pressure and/or compressor discharge pressure, wherein the determining that the compressor circuit meets the start-up condition based on the operating parameter comprises:

determining that the suction pressure of the compressor falls into a first pressure interval; and/or the presence of a gas in the gas,

determining that the exhaust pressure of the compressor falls into a second pressure interval; the compressor pipeline is judged to meet the starting condition.

It should be noted that the first pressure interval and the second pressure interval may be reasonably determined based on experimental data of the operation of the air conditioner. The air suction pressure and the exhaust pressure of the compressor can be collected based on corresponding pressure sensors, and the air conditioner can receive the pressure collected by each pressure sensor so as to obtain the air suction pressure and the exhaust pressure of the compressor.

It will be appreciated that if it is determined that the compressor suction pressure falls within the first pressure interval; and/or determining that the system pressure of the compressor is recovered to be normal if the discharge pressure of the compressor is determined to fall into the second pressure interval, and directly starting the compressor.

In some embodiments, the control method further comprises:

and determining whether the waiting time length reaches the set time length or not based on the working parameters when the compressor pipeline is determined not to accord with the starting conditions, and if not, continuing determining whether the compressor pipeline accords with the starting conditions or whether the waiting time length reaches the set time length based on the current working parameters until the compressor pipeline is determined to accord with the starting conditions or the waiting time length reaches the set time length, and starting the compressor.

It can be understood that if the compressor pipeline is determined not to be in accordance with the starting condition based on the working parameters, waiting is needed, and whether the compressor pipeline is in accordance with the starting condition or not is judged based on the newly acquired working parameters until the compressor pipeline is determined to be in accordance with the starting condition or the waiting time reaches the set time, and the compressor is started. Therefore, the compressor can be started forcibly after the waiting time reaches the set time.

The waiting time can be the time counted by the timer started by the air conditioner in response to the command of the fault restart, the intermittent restart or the user restart. The set time period may be a preset interval time period that ensures that the air conditioner can still successfully start the compressor under severe load.

In some embodiments, after determining that the compressor circuit is not in compliance with the start-up condition based on the operating parameter, the method further comprises:

starting a fan of the air conditioner and/or increasing the opening degree of an expansion valve on a compressor pipeline.

It can be understood that after the air conditioner determines that the compressor pipeline does not accord with the starting condition based on the working parameters, the air conditioner can start the fan and/or increase the opening degree of the expansion valve on the compressor pipeline, so that the pressure relief of the compressor pipeline is facilitated, the compressor pipeline can accord with the starting condition more quickly, and the starting interval duration is shortened.

For example, the air conditioner may adjust the opening degree of the expansion valve to the maximum.

For example, the air conditioner may turn on both the fans on the air conditioner internal unit side and the air conditioner external unit side, or the air conditioner may turn on the fan on the air conditioner internal unit side or the fan on the air conditioner external unit side.

It can be understood that the fan of the air conditioner may be a fan on an inner side of the air conditioner, a fan on an outer side of the air conditioner, or other fans facilitating load release of the whole air conditioner, which is not specifically limited in this embodiment of the present application.

In some embodiments, the control method further comprises:

and acquiring a gear instruction, and determining the target frequency of the compressor operation and/or the target rotating speed of the fan operation based on the gear instruction.

It can be understood that a user can input a gear instruction based on a remote controller or a key on the air conditioner, the air conditioner obtains the gear instruction, and determines a target frequency of operation of the compressor and/or a target rotation speed of operation of the fan based on the gear instruction.

In some embodiments, the control method further comprises:

and responding to a shutdown instruction, controlling the compressor to shut down, determining that the pipeline of the compressor meets shutdown conditions, and controlling the fan of the air conditioner to shut down.

For example, whether the compressor pipeline meets the shutdown condition or not may be determined based on the aforementioned operating parameters and the preset shutdown condition, and if not, the blower of the air conditioner is maintained to operate until the compressor pipeline meets the shutdown condition, and the blower of the air conditioner is controlled to be shut down. The shutdown condition may be reasonably determined based on experimental data. The fan of the air conditioner can be an inner machine side fan and/or an outer machine side fan, so that the starting interval of the next starting of the compressor can be shortened.

The following describes an example of a control method of an air conditioner in conjunction with an application example.

Application example 1

The control method of the air conditioner of the present application example, taking the air conditioner operating in the cooling mode as an example, as shown in fig. 2, includes the following steps:

step 201, acquiring a gear instruction, and determining a target frequency of compressor operation and a target rotating speed of fan operation based on the gear instruction.

For example, the air conditioner may have a plurality of gears, each gear has a target frequency of the compressor and a target speed of the fan corresponding to the gear, and the air conditioner may obtain a gear instruction input by a user, and determine the target frequency of the compressor operation and the target speed of the fan operation based on the gear instruction.

In step 202, a first temperature T1, a second temperature T2, a third temperature T3, and a fourth temperature T4 are obtained.

Here, the air conditioner may periodically obtain a first temperature T1, a second temperature T2, a third temperature T3, and a fourth temperature T4, where T1 corresponds to an evaporator temperature, T2 corresponds to an indoor unit-side ambient temperature, T3 corresponds to a condenser temperature, and T4 corresponds to an outdoor unit-side ambient temperature.

For example, the air conditioner may start to periodically acquire the first, second, third and fourth temperatures T1, T2, T3 and T4 in response to an instruction of a failed restart, an intermittent restart or a user restart.

Step 203, judging whether T2-T1< ═ delta T1 and T3-T4< ═ delta T2, if not, executing step 204; if yes, go to step 205.

It will be appreciated that if T2-T1 ≦ Δ T1 and T3-T4 ≦ Δ T2, then the compressor circuit is determined to be in a start-up condition, i.e., the system pressure of the compressor has returned to normal, and step 205 may be performed to start the compressor directly.

Step 204, judging whether the waiting time T is larger than or equal to the set time T, if not, returning to the step 203; if yes, go to step 205.

The waiting time period t may be a time period for the air conditioner to start a timer in response to the aforementioned instruction of fault restart, intermittent restart, or user restart. The set time period T may be a preset interval time period that ensures that the air conditioner can still successfully start the compressor under severe load. In this way, step 205 may be executed to forcibly start the compressor when the waiting time period T is greater than or equal to the set time period T.

Step 205, start the compressor.

It is understood that when the air conditioner is operated in the heating mode, the heat exchanger of the air conditioner indoor unit corresponds to a condenser, the heat exchanger of the air conditioner indoor unit corresponds to an evaporator, and the determination condition of step 203 may be replaced with T1-T2< ═ Δ T1 and T4-T3< ═ Δ T2.

It is understood that the step 202 may only acquire the first temperature T1 and the second temperature T2 or the third temperature T3 and the fourth temperature T4, and accordingly, the determination condition of the step 203 may be replaced by T2-T1< ═ Δ T1 or T3-T4< ═ Δ T2.

Application example two

The control method of the air conditioner of the present application example, taking the air conditioner operating in the cooling mode as an example, as shown in fig. 3, includes the following steps:

step 301, a gear instruction is obtained, and a target frequency of compressor operation and a target rotating speed of fan operation are determined based on the gear instruction.

In step 302, a first temperature T1, a second temperature T2, a third temperature T3, and a fourth temperature T4 are obtained.

Step 303, judging whether T2-T1< ═ delta T1 and T3-T4< ═ delta T2, if not, executing step 304; if yes, go to step 306.

And step 304, starting a fan of the air conditioner and increasing the opening of an expansion valve on a compressor pipeline.

Step 305, judging whether the waiting time T is larger than or equal to the set time T, if not, returning to the step 303; if yes, go to step 306.

Step 306, start the compressor.

The above steps 301 to 303 correspond to the above steps 201 to 203, and the steps 305 to 306 correspond to the above steps 204 to 205, which may refer to the description of the application example specifically, and are not repeated herein.

The difference between this application example and the aforementioned first application example is that, after step 303, step 304 is added, and the air conditioner can start the fan and increase the opening degree of the expansion valve on the compressor pipeline, so as to facilitate pressure relief of the compressor pipeline, so that the compressor pipeline can meet the starting condition more quickly, and further shorten the time of the starting interval.

In order to implement the method of the embodiment of the present application, an embodiment of the present application further provides a control device of an air conditioner, where the control device of the air conditioner corresponds to the control method of the air conditioner, and each step in the embodiment of the control method of the air conditioner is also completely applicable to the embodiment of the control device of the air conditioner.

As shown in fig. 4, the control apparatus of the air conditioner includes: a control module 401 and a control module 402.

The obtaining module 401 is configured to obtain a working parameter representing a pressure state of a compressor pipeline; the control module 402 is configured to start the compressor if the compressor circuit is determined to meet a start condition based on the operating parameter.

In some embodiments, the operating parameters include: the first temperature of air conditioner side heat exchanger and the second temperature of air conditioner wind gap department, control module 402 specifically is used for:

and determining that the absolute value of the difference between the first temperature and the second temperature is less than or equal to a first threshold value, and determining that the compressor pipeline meets the starting condition.

In some embodiments, the operating parameters include: the third temperature of the heat exchanger on the side of the external unit of the air conditioner and the fourth temperature at the air inlet of the external unit of the air conditioner, and the control module 402 is specifically configured to:

and determining that the absolute value of the difference between the third temperature and the fourth temperature is less than or equal to a second threshold value, and determining that the compressor pipeline meets the starting condition.

In some embodiments, the operating parameters include: the temperature control method comprises the following steps of (1) enabling a first temperature of a heat exchanger on the side of an air conditioner internal unit, a second temperature of an air outlet of the air conditioner internal unit, a third temperature of the heat exchanger on the side of the air conditioner external unit and a fourth temperature of the air outlet of the air conditioner external unit to be higher than the first temperature; the control module 402 is specifically configured to:

and determining that the absolute value of the difference between the first temperature and the second temperature is less than or equal to a first threshold value and the absolute value of the difference between the third temperature and the fourth temperature is less than or equal to a second threshold value, and determining that the compressor pipeline meets the starting condition.

In some embodiments, the operating parameters include: at least one of a second temperature at the air outlet of the air conditioner and a fourth temperature at the air outlet of the air conditioner, and the control module 402 is specifically configured to:

determining that an absolute value of a difference between the compressor discharge temperature and the second temperature is less than a third threshold; and/or;

determining that an absolute value of a difference between the compressor discharge temperature and the fourth temperature is less than a fourth threshold; the compressor pipeline is determined to meet the starting condition.

In some embodiments, the operating parameters include: compressor suction pressure and/or compressor discharge pressure, the control module 402 is specifically configured to:

determining that the suction pressure of the compressor falls into a first pressure interval; and/or the presence of a gas in the gas,

determining that the compressor discharge pressure falls within a second pressure interval; the compressor pipeline is determined to meet the starting condition.

In some embodiments, the control module 402 is further configured to:

and determining whether the waiting time length reaches a set time length or not based on the working parameters when the compressor pipeline is determined not to meet the starting conditions, if not, continuing to determine whether the compressor pipeline meets the starting conditions or not based on the current working parameters until the compressor pipeline is determined to meet the starting conditions or the waiting time length reaches the set time length, and starting the compressor.

In some embodiments, the control module 402 is further configured to:

and starting a fan of the air conditioner and/or increasing the opening degree of an expansion valve on the compressor pipeline after determining that the compressor pipeline does not meet the starting condition based on the working parameters.

In some embodiments, the control module 402 is further configured to:

acquiring a gear instruction, and determining the target frequency of the compressor operation and/or the target rotating speed of the fan operation based on the gear instruction.

In some embodiments, the control module 402 is further configured to:

and responding to a shutdown instruction, controlling the compressor to shut down, determining that the pipeline of the compressor meets shutdown conditions, and controlling the fan of the air conditioner to shut down.

In actual application, the obtaining module 401 and the control module 402 may be implemented by a processor of an air conditioner. Of course, the processor needs to run a computer program in memory to implement its functions.

It should be noted that: in the control device of the air conditioner provided in the above embodiment, when the air conditioner is controlled, only the division of the above program modules is taken as an example, and in practical applications, the above processing distribution may be completed by different program modules according to needs, that is, the internal structure of the device may be divided into different program modules to complete all or part of the above described processing. In addition, the control device of the air conditioner and the control method embodiment of the air conditioner provided by the above embodiments belong to the same concept, and the specific implementation process thereof is detailed in the method embodiment and will not be described again.

Based on the hardware implementation of the program module, in order to implement the method of the embodiment of the present application, an embodiment of the present application further provides an air conditioner. Fig. 5 shows only an exemplary structure of the air conditioner, not the entire structure, and a part or the entire structure shown in fig. 5 may be implemented as necessary.

As shown in fig. 5, an air conditioner 500 provided in the embodiment of the present application includes: at least one processor 501, memory 502, and a user interface 503. The various components in the air conditioner 500 are coupled together by a bus system 504. It will be appreciated that the bus system 504 is used to enable communications among the components. The bus system 504 includes a power bus, a control bus, and a status signal bus in addition to a data bus. For clarity of illustration, however, the various buses are labeled as bus system 504 in fig. 5.

The user interface 503 may include a display, a keyboard, a mouse, a trackball, a click wheel, a key, a button, a touch pad, a touch screen, or the like, among others.

The memory 502 in the embodiment of the present application is used to store various types of data to support the operation of the air conditioner. Examples of such data include: any computer program for operating on an air conditioner.

The control method of the air conditioner disclosed in the embodiment of the present application may be applied to the processor 501, or may be implemented by the processor 501. The processor 501 may be an integrated circuit chip having signal processing capabilities. In implementation, the steps of the control method of the air conditioner may be implemented by an integrated logic circuit of hardware in the processor 501 or instructions in the form of software. The Processor 501 may be a general purpose Processor, a Digital Signal Processor (DSP), or other programmable logic device, discrete gate or transistor logic device, discrete hardware components, etc. The processor 501 may implement or perform the methods, steps, and logic blocks disclosed in the embodiments of the present application. A general purpose processor may be a microprocessor or any conventional processor or the like. The steps of the method disclosed in the embodiments of the present application may be directly implemented by a hardware decoding processor, or implemented by a combination of hardware and software modules in the decoding processor. The software module may be located in a storage medium located in the memory 502, and the processor 501 reads information in the memory 502, and completes the steps of the control method of the air conditioner provided in the embodiment of the present application in combination with hardware thereof.

In an exemplary embodiment, the air conditioner may be implemented by one or more Application Specific Integrated Circuits (ASICs), DSPs, Programmable Logic Devices (PLDs), Complex Programmable Logic Devices (CPLDs), Field Programmable Gate Arrays (FPGAs), general purpose processors, controllers, Micro Controllers (MCUs), microprocessors (microprocessors), or other electronic components for performing the aforementioned methods.

It will be appreciated that the memory 502 can be either volatile memory or nonvolatile memory, and can include both volatile and nonvolatile memory. Among them, the nonvolatile Memory may be a Read Only Memory (ROM), a Programmable Read Only Memory (PROM), an Erasable Programmable Read-Only Memory (EPROM), an Electrically Erasable Programmable Read-Only Memory (EEPROM), a magnetic random access Memory (FRAM), a Flash Memory (Flash Memory), a magnetic surface Memory, an optical disk, or a Compact Disc Read-Only Memory (CD-ROM); the magnetic surface storage may be disk storage or tape storage. Volatile Memory can be Random Access Memory (RAM), which acts as external cache Memory. By way of illustration and not limitation, many forms of RAM are available, such as Static Random Access Memory (SRAM), Synchronous Static Random Access Memory (SSRAM), Dynamic Random Access Memory (DRAM), Synchronous Dynamic Random Access Memory (SDRAM), Double Data Rate Synchronous Dynamic Random Access Memory (DDRSDRAM), Enhanced Synchronous Dynamic Random Access Memory (ESDRAM), Enhanced Synchronous Dynamic Random Access Memory (Enhanced DRAM), Synchronous Dynamic Random Access Memory (SLDRAM), Direct Memory (DRmb Access), and Random Access Memory (DRAM). The memories described in the embodiments of the present application are intended to comprise, without being limited to, these and any other suitable types of memory.

In an exemplary embodiment, the present application further provides a storage medium, that is, a computer storage medium, which may be a computer readable storage medium, for example, a memory 502 storing a computer program, where the computer program is executable by a processor 501 of an air conditioner to perform the steps of the method of the present application. The computer readable storage medium may be a ROM, PROM, EPROM, EEPROM, Flash Memory, magnetic surface Memory, optical disk, or CD-ROM, among others.

It should be noted that: "first," "second," and the like are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order.

The technical means described in the embodiments of the present application may be arbitrarily combined without conflict.

The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily conceive of changes or substitutions within the technical scope of the present application, and shall be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.