Air conditioner control method and air conditioner

Abstract

The invention relates to the technical field of intelligent household appliances, particularly provides an air conditioner control method and an air conditioner, and aims to solve the problem that an existing air conditioner still reports a high-voltage fault after being shut down due to high-voltage alarm and restarted. The control method comprises the steps that the opening value X of a throttling valve and / or the working frequency Y of a compressor are / is obtained when the air conditioner is shut down; the air conditioner is restarted, the opening degree X of the throttling valve is corrected to obtain the corrected opening degree W, and / or the working frequency Y of the compressor is corrected to obtain the corrected frequency V; when the air conditioner runs, the opening degree of the throttling valve is not smaller than the corrected opening degree W and / or the working frequency of the compressor is not larger than the corrected frequency V; wherein W > X and / or V < Y. Through the method, the opening value of the throttle valve and / or the working frequency of the compressor can be corrected, so that the pressure of a refrigerant and the temperature of an indoor heat exchanger are reduced, and the problem that a high-voltage fault is still reported when the air conditioner is started again is effectively solved.

Description

Technical Field

[0001] The present invention relates to the technical field of intelligent household appliances, and particularly provides a control method for an air conditioner and an air conditioner. Background Art

[0002] An air conditioner generally includes an evaporator, a condenser, a compressor, a throttle valve, a blower, a control system, a housing, etc. The working principle is that when the air conditioner is working, the compressor and the blower start to work; absorb low-temperature and low-pressure refrigerant gas from the evaporator, compress it into high-temperature and high-pressure gas by the compressor, enter the condenser, condense into high-temperature and high-pressure liquid, release heat, enter the evaporator after throttling by the throttle valve, absorb the heat of the air, evaporate into gas, and then enter the compressor through the suction pipe, thus completing a refrigeration or heating cycle. In extremely high-temperature weather, since the outdoor temperature is relatively high, the temperature difference between the outdoor air and the condenser will be reduced, resulting in poor heat dissipation effect of the condenser. In this way, the heat of the high-temperature and high-pressure refrigerant cannot be dissipated well, which will cause the compressor to alarm for high pressure.

[0003] Currently, an air conditioner generally judges whether the air conditioner reaches the high-pressure alarm condition by detecting the temperature of the condenser through a sensor. When the sensor detects that the temperature of the condenser is too high and reaches the alarm condition, the air conditioner reports a high-pressure fault and shuts down. After restarting the air conditioner, the air conditioner will continue to operate according to the program before shutdown. As a result, after a period of time, the air conditioner will report a high-pressure fault again and shut down again. Thus, after repeated start and stop of the air conditioner, it will cause the compressor to crash and damage the internal components of the compressor, affecting the service life of the air conditioner.

[0004] Therefore, a new technical solution is needed in this field to solve the above problems. Summary of the Invention

[0005] The present invention aims to solve the above technical problems, that is, to solve the problem that when the existing air conditioner shuts down due to high-pressure alarm and then starts again, it still reports a high-pressure fault.

[0006] In a first aspect, the present invention provides a control method for an air conditioner. The air conditioner includes an indoor unit and an outdoor unit. The indoor unit includes an indoor heat exchanger and a throttle valve. The outdoor unit includes a compressor. When the air conditioner shuts down due to a high-pressure fault, the control method includes:

[0007] S100: Obtain the opening value X of the throttle valve and / or the operating frequency Y of the compressor when the air conditioner shuts down;

[0008] S200: Restart the air conditioner, correct the opening X of the throttle valve to obtain a corrected opening W and / or correct the operating frequency Y of the compressor to obtain a corrected frequency V;

[0009] S300: When the air conditioner is operating, make the opening degree of the throttle valve not less than the corrected opening degree W and / or make the operating frequency of the compressor not greater than the corrected frequency V;

[0010] Wherein, W > X and / or V < Y.

[0011] In a preferred technical solution of the above air conditioner control method, W = X × t,

[0012] Wherein, t is a constant.

[0013] In a preferred technical solution of the above air conditioner control method, V = Y × s,

[0014] Wherein, s is a constant.

[0015] In a preferred technical solution of the above air conditioner control method, the air conditioner control method further includes:

[0016] S400: After the operation time of the air conditioner reaches the first preset time T1, make the air conditioner resume normal operation and no longer limit the opening degree of the throttle valve and / or the operating frequency of the compressor according to S300.

[0017] In a preferred technical solution of the above air conditioner control method, the indoor heat exchanger and the throttle valve are respectively provided with a plurality of, the plurality of indoor heat exchangers are arranged in parallel, the plurality of throttle valves correspond to the plurality of indoor heat exchangers one by one, and the specific steps of "acquiring the opening degree value X of the throttle valve" include:

[0018] S101: Acquire the opening degree of each throttle valve;

[0019] S102: Compare the opening degrees of the plurality of throttle valves, and the one with the smallest opening degree is the opening degree value X.

[0020] In a preferred technical solution of the above air conditioner control method, the specific steps of "when the air conditioner is operating, make the opening degree of the throttle valve not less than the corrected opening degree W" include:

[0021] When the air conditioner is operating, make the opening degree of each throttle valve not less than the corrected opening degree W.

[0022] In a preferred technical solution of the above air conditioner control method, the value range of t is 1.2 to 1.8.

[0023] In a preferred technical solution of the above air conditioner control method, the value range of s is 0.6 to 0.9.

[0024] In a preferred technical solution of the above air conditioner control method, the control method further includes:

[0025] When the shutdown time of the air conditioner reaches the second preset time T2, restart the air conditioner.

[0026] In a second aspect, the present invention also provides an air conditioner, including a controller configured to be able to execute the above control method.

[0027] Those skilled in the art can understand that the technical solution of the present invention provides a control method for an air conditioner. The air conditioner includes an indoor unit and an outdoor unit. The indoor unit includes an indoor heat exchanger and a throttle valve, and the outdoor unit includes a compressor. When the air conditioner shuts down due to a high-pressure fault, the control method includes: S100: Obtain the opening value X of the throttle valve and / or the operating frequency Y of the compressor when the air conditioner shuts down; S200: Restart the air conditioner, correct the opening X of the throttle valve to obtain a corrected opening W and / or correct the operating frequency Y of the compressor to obtain a corrected frequency V; S300: When the air conditioner is running, make the opening of the throttle valve not less than the corrected opening W and / or make the operating frequency of the compressor not greater than the corrected frequency V; where W > X and / or V < Y. In the case of adopting the above technical solution, the present invention can solve the problem that the air conditioner still reports a high-pressure fault when restarted after shutting down due to a high-pressure alarm. Specifically, the present invention obtains the opening value X of the throttle valve and the operating frequency Y of the compressor after the air conditioner shuts down, and corrects the opening value X of the throttle valve and the operating frequency Y of the compressor after restarting to obtain the corrected opening W of the throttle valve and the corrected frequency V of the compressor, and W > X, V < Y. Thus, after the air conditioner restarts, by increasing the opening of the throttle valve (W > X), the flow rate of the refrigerant through the throttle valve increases, which can accelerate the outflow speed of the refrigerant from the indoor heat exchanger, thereby reducing the temperature of the indoor heat exchanger and preventing the pressure in the pipe section from the compressor to the indoor heat exchanger from increasing due to overheating of the indoor heat exchanger. Therefore, it can avoid the problems of excessive exhaust pressure and high temperature of the compressor, resulting in the air conditioner reporting a high-pressure alarm again. In addition, after the air conditioner restarts, by reducing the operating frequency of the compressor (V < Y), the refrigerating capacity per unit mass of the refrigerant can be reduced, and then the flow rate of the refrigerant can be reduced, which can reduce the temperature of the indoor heat exchanger and prevent the temperature of the indoor heat exchanger from overheating, resulting in an increase in the pressure in the pipe section from the compressor to the indoor heat exchanger and the air conditioner reporting a high-pressure alarm again. Thus, the present invention can correct one or all of the opening of the throttle valve and the frequency of the compressor, and can reduce the temperature of the indoor heat exchanger and the pressure in the pipe section from the compressor to the indoor heat exchanger after the air conditioner restarts due to a high-pressure alarm, avoiding the problem that the air conditioner reports a high-pressure alarm again and shuts down.

[0028] Further, the control method of the air conditioner according to the present invention further includes: after the operation time of the air conditioner reaches the first preset time T1, the air conditioner resumes normal operation, and no longer restricts the opening degree of the throttle valve and / or the operating frequency of the compressor according to S300. Through this method setting, after the air conditioner operates for a period of time with the corrected opening degree of the throttle valve and / or the operating frequency of the compressor, the temperature of the indoor heat exchanger can gradually return to the normal value, and the pressure from the compressor to the indoor heat exchanger pipe section can return to normal. Therefore, after the air conditioner resumes normal operation, the stability of the normal operation of the air conditioner can be ensured, and high-pressure alarms can be avoided from occurring again.

[0029] Still further, the indoor heat exchanger and the throttle valve of the present invention are respectively provided with a plurality of them. The plurality of indoor heat exchangers are arranged in parallel, and the plurality of throttle valves correspond to the plurality of indoor heat exchangers one by one. The specific steps of "obtaining the opening value X of the throttle valve" include: S101: obtaining the opening degree of each throttle valve; S102: comparing the opening degrees of the plurality of throttle valves, and the one with the smallest opening degree is the opening value X. Through this method setting, it is helpful to determine the specific reason for the shutdown of the multi-system air conditioner due to high-pressure faults, so as to specifically correct the opening degree of the throttle valve and further ensure the normal operation of the air conditioner after restart.

[0030] Still further, the control method of the air conditioner according to the present invention further includes: when the shutdown time of the air conditioner reaches the second preset time T2, the air conditioner is restarted again. Through this method setting, before the air conditioner is restarted, a certain time can be reserved for the air conditioner to balance its own pressure and for the indoor heat exchanger to dissipate heat, so as to reduce the system pressure and the temperature of the heat exchanger, thereby helping the air conditioner to restart successfully. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings, in which:

[0032] Figure 1 is a flowchart of the control method of the present invention;

[0033] Figure 2 is a flowchart of an embodiment of the control method of the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0034] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are only used to explain the technical principle of the present invention and are not intended to limit the protection scope of the present invention. For example, although the following embodiments are introduced in combination with air conditioners, the control method of the air conditioner provided by the present invention is equally applicable to other products that need to solve the problem that after shutdown due to high-pressure alarms and then restart, high-pressure faults will still be reported.

[0035] It should be noted that in the description of the present invention, unless otherwise clearly specified and defined, the terms "arrangement" and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. In addition, unless otherwise stated, the term "a plurality of" means two or more. The term "and / or" is a description of the associated relationship of an object, indicating that three relationships can exist. For example, A and / or B means: A or B, or, the three relationships of A and B.

[0036] Based on the problem pointed out in the background art that the existing air conditioner will still report a high-pressure fault when restarted after shutting down due to high-pressure alarm. The present invention provides a control method for an air conditioner, aiming to effectively solve the problem that the air conditioner will still report a high-pressure fault when restarted after shutting down due to high-pressure alarm by correcting the opening value of the throttle valve and / or the operating frequency of the compressor.

[0037] First, refer to Figure 1 , where Figure 1 is a schematic flow chart of the control method of the present invention.

[0038] As Figure 1 shown, in the first aspect, the present invention provides a control method for an air conditioner. The air conditioner includes an indoor unit and an outdoor unit. The indoor unit includes an indoor heat exchanger and a throttle valve, and the outdoor unit includes a compressor. When the air conditioner shuts down due to a high-pressure fault, the control method includes:

[0039] S100: Obtain the opening value X of the throttle valve and / or the operating frequency Y of the compressor when the air conditioner shuts down.

[0040] S200: Restart the air conditioner, correct the opening X of the throttle valve to obtain a corrected opening W and / or correct the operating frequency Y of the compressor to obtain a corrected frequency V.

[0041] S300: When the air conditioner is operating, make the opening of the throttle valve not less than the corrected opening W and / or make the operating frequency of the compressor not greater than the corrected frequency V.

[0042] Wherein, W > X and / or V < Y.

[0043] Taking the heat release of the indoor heat exchanger as an example, during the operation of the air conditioner, the refrigerant is pressurized by the compressor and becomes a high-temperature and high-pressure gas. Then it enters the indoor heat exchanger, where the gas is condensed and liquefied. After the gas is condensed and liquefied and releases heat, it becomes a liquid. During the heat release process, the temperature indoors rises, and at the same time, the indoor air is heated, thus raising the indoor temperature. The refrigerant is depressurized by the throttle valve and enters the outdoor heat exchanger, where the liquid evaporates. Evaporation absorbs heat and the refrigerant becomes a gas, while absorbing the heat of the outdoor air and transferring the heat of the outdoor air to the indoor. The refrigerant that has become a gas enters the compressor again to start the next cycle. After repeating the cycle many times, through the continuous cycle of liquefaction and vaporization of the refrigerant, heat is absorbed at the outdoor heat exchanger and transferred to the indoor heat exchanger for release. The heat from the outdoor is transferred to the indoor, thus realizing the transfer of heat and achieving the purpose of heating. During this cycle of the refrigerant, under some working conditions, due to untimely heat exchange in the indoor heat exchanger, the ambient temperature of the indoor heat exchanger rises, resulting in abnormal heat exchange, increasing the condensation temperature, reducing condensation, causing the pressure in the pipe section from the compressor to the indoor heat exchanger to rise, increasing the compressor discharge pressure and temperature, and triggering the air conditioner to report a high-pressure fault and shut down. For example, in extremely hot weather, due to the high outdoor temperature, the temperature difference between the outdoor air and the indoor heat exchanger is reduced, making the heat dissipation effect of the indoor heat exchanger poor, and the heat of the refrigerant cannot be dissipated in time. The air conditioner reports a high-pressure fault and shuts down.

[0044] In order to avoid the air conditioner reporting a high-pressure fault again after restarting when it shuts down due to a high-pressure alarm, in the present invention, after the air conditioner shuts down, the opening value X of the throttle valve and / or the operating frequency Y of the compressor are obtained, and after restarting, the opening value X of the throttle valve and / or the operating frequency Y of the compressor are corrected to obtain the corrected opening W of the throttle valve and / or the corrected frequency V of the compressor, and W > X, V < Y. Thus, after the air conditioner restarts, since the opening of the throttle valve is increased (W > X), the flow rate of the refrigerant passing through the throttle valve increases, which can accelerate the outflow speed of the refrigerant from the indoor heat exchanger, thereby reducing the temperature of the indoor heat exchanger and preventing the pressure in the pipe section from the compressor to the indoor heat exchanger from increasing due to overheating of the indoor heat exchanger. Therefore, it is possible to avoid excessive exhaust pressure and high temperature of the compressor, and prevent the problem of the air conditioner reporting a high-pressure alarm again. In addition, after the air conditioner restarts, the present invention also reduces the operating frequency of the compressor (V < Y), which can reduce the refrigerating capacity per unit mass of the refrigerant, and then reduce the flow rate of the refrigerant, which can reduce the temperature of the indoor heat exchanger and prevent the temperature of the indoor heat exchanger from overheating, resulting in an increase in the pressure in the pipe section from the compressor to the indoor heat exchanger and the problem of the air conditioner reporting a high-pressure alarm again. Thus, by correcting any one or all of the opening of the throttle valve and the frequency of the compressor, the present invention can reduce the temperature of the indoor heat exchanger and the pressure in the pipe section from the compressor to the indoor heat exchanger after the air conditioner restarts due to a high-pressure alarm and then avoid the problem of the air conditioner reporting a high-pressure alarm again and shutting down, which can ensure the normal operation of the air conditioner and prevent damage to the internal components of the compressor, and extend the service life of the air conditioner.

[0045] Preferably, W = X × t, where t is a constant.

[0046] Exemplarily, the value range of t is 1.2 to 1.8. This makes the corrected opening W of the throttle valve greater than the opening value X of the throttle valve. Thus, after the air conditioner restarts, the pressure of the refrigerant passing through the throttle valve can be effectively reduced, the flow rate of the refrigerant can be increased, and further the pressure in the pipe section from the compressor to the indoor heat exchanger can be reduced, avoiding the air conditioner reporting a high-pressure alarm again.

[0047] In addition, in other embodiments, the value of t can also be 1.1, 1.9, 2.0, etc. The larger the value of t, the larger the opening of the corrected throttle valve, and thus the weaker the current-limiting effect on the refrigerant. Of course, the specific value of t needs to be reasonably set according to the actual situation, and the present invention does not make specific limitations on this.

[0048] Preferably, V = Y × s, where s is a constant.

[0049] Exemplarily, the value range of s is 0.6 to 0.9. This makes the corrected frequency V of the compressor less than the operating frequency Y of the compressor. Thus, after the air conditioner restarts, the refrigerating capacity per unit mass of the refrigerant can be effectively reduced, and further the flow rate of the refrigerant can be reduced, and the pressure of the pipe section from the compressor to the indoor heat exchanger can be reduced, avoiding high-pressure alarm of the air conditioner again.

[0050] In addition, in other embodiments, the value of s can also be 0.5, 0.4, 0.3, etc. The smaller the value of s, the smaller the operating frequency of the corrected compressor, and thus the smaller the flow rate of the refrigerant and the smaller the circulating pressure of the refrigerant. Of course, the specific value of s needs to be reasonably set according to the actual situation, and the present invention does not make specific limitations on this.

[0051] Preferably, as Figure 2 shown, the control method of the air conditioner of the present invention further includes:

[0052] S400: After the operating time of the air conditioner reaches the first preset time T1, the air conditioner resumes normal operation and no longer restricts the opening degree of the throttle valve and / or the operating frequency of the compressor according to S300.

[0053] The present invention corrects the opening degree of the throttle valve and / or the frequency of the compressor in order to make the temperature of the inner heat exchanger and the pressure of the pipe section from the compressor to the indoor heat exchanger return to the size during normal operation of the air conditioner as soon as possible after the air conditioner restarts. Therefore, after the air conditioner operates for the first preset time T1 through the corrected opening degree of the throttle valve and / or the operating frequency of the compressor, the temperature of the indoor heat exchanger and the pressure of the system can be restored to the normal value. Thus, it is not necessary to make the air conditioner operate at the corrected opening degree W of the throttle valve and / or the corrected frequency V of the compressor, otherwise the problem of insufficient heat exchange of the indoor heat exchanger will further occur. Thus, the stability of the normal operation of the air conditioner can be ensured.

[0054] Exemplarily, T1 in the present invention is 20 min to 40 min, which makes the temperature of the indoor heat exchanger and the pipe section from the compressor to the indoor heat exchanger return to the normal value after the air conditioner operates through the corrected opening degree of the throttle valve and / or the operating frequency of the compressor.

[0055] In addition, in other embodiments, the value of T1 can also be 10, 15, 20, etc. The value of T1 can be reasonably set according to the actual situation, and the present invention does not make specific limitations on this.

[0056] Preferably, as Figure 2 shown, a plurality of indoor heat exchangers and throttle valves are respectively provided. The plurality of indoor heat exchangers are arranged in parallel, and the plurality of throttle valves correspond to the plurality of indoor heat exchangers one by one. The specific steps of "obtaining the opening degree value X of the throttle valve" include:

[0057] S101: Obtain the opening degree of each throttle valve.

[0058] S102: Compare the opening degrees of multiple throttle valves, and the one with the smallest opening degree is the opening value X.

[0059] For a multi-system air conditioner, there is a situation where one compressor is connected to multiple indoor heat exchangers. If the multi-system air conditioner shuts down due to a high-pressure fault, it is most likely that the indoor heat exchanger on the branch with the smallest throttle valve opening does not exchange heat in time, resulting in too high pressure in the pipe section from the compressor to the indoor heat exchanger, and the air conditioner reports a high-pressure fault. Therefore, for a multi-system air conditioner, by obtaining the opening degree of each throttle valve, comparing the opening degrees of multiple throttle valves, determining the one with the smallest opening degree as the opening value X, and correcting it, the pressure on the branch with the smallest throttle valve opening can be reduced, which helps prevent the air conditioner from reporting a high-pressure fault again after restarting and ensures the normal operation of the air conditioner.

[0060] Preferably, as Figure 2 shown, the specific steps of "when the air conditioner is running, make the opening degree of the throttle valve not less than the corrected opening degree W" include:

[0061] When the air conditioner is running, make the opening degree of each throttle valve not less than the corrected opening degree W.

[0062] To prevent the air conditioner from reporting a high-pressure fault because of too high pressure in the pipe section from the compressor to the indoor heat exchanger on other branches rather than on the branch with the smallest throttle valve opening, after the air conditioner restarts, the present invention makes the opening degree of each throttle valve not less than the corrected opening degree W to run. Thus, the throttle valves on all branches can be corrected to adjust the flow rate of the refrigerant flowing through all branches within a reasonable range, correct the pressure in the pipe section from the compressor to each indoor heat exchanger, and ensure that after the air conditioner restarts for a period of time, it will not report a high-pressure fault due to too high pressure in the pipe section from the compressor to the indoor heat exchanger, further ensuring the normal operation of the air conditioner after restarting.

[0063] Preferably, as Figure 2 shown, the control method of the present invention further includes:

[0064] When the shutdown time of the air conditioner reaches the second preset time T2, restart the air conditioner.

[0065] Since the pressure in the pipe section from the compressor to the indoor heat exchanger and the temperature of the indoor heat exchanger are both at relatively high levels after the air conditioner shuts down due to a high-pressure fault, the air conditioner cannot be restarted immediately after shutdown. Otherwise, the air conditioner will still shut down due to a high-pressure fault. In this embodiment, when the shutdown time of the air conditioner reaches the second preset time T2, the air conditioner is restarted. Thus, before restarting the air conditioner, a certain amount of time can be reserved for the air conditioner to balance the pressure and dissipate heat from the indoor heat exchanger, so as to reduce the pressure in the pipe section from the compressor to the indoor heat exchanger and the temperature of the indoor heat exchanger, thereby contributing to the successful restart of the air conditioner.

[0066] Exemplarily, T2 in the present invention is 10 min to 20 min, so that the air conditioner can effectively balance the pressure and effectively dissipate heat from the indoor heat exchanger, ensuring the successful restart of the air conditioner.

[0067] In addition, in other embodiments, the value of T2 can also be 5, 25, 30, etc. The value of T2 can be reasonably set according to the actual situation, and the present invention does not make specific limitations on this.

[0068] In addition, the present invention also provides an air conditioner, including a controller configured to be able to execute the above control method.

[0069] Specifically, the controller includes a processing element, a storage element, a communication interface, and a bus. Among them, the processing element, the communication interface, and the storage element can complete mutual communication through the bus. The communication interface can be used for information transmission. The processing element can call the logical instructions in the storage element to execute the control method of the air conditioner in the above embodiment.

[0070] In addition, when the logical instructions in the above storage element are implemented in the form of a software functional unit and sold or used as an independent product, they can be stored in a computer-readable storage medium.

[0071] The storage element, as a computer-readable storage medium, can be used to store software programs and computer-executable programs, such as the program instructions / modules corresponding to the control method of the air conditioner in the embodiment of the present invention. The processing element executes functional applications and data processing by running the program instructions / modules stored in the storage element, that is, implements the control method of the air conditioner in the above embodiment.

[0072] The storage element includes a storage program area and a storage data area. Among them, the storage program area can store an operating system and application programs required for at least one function; the storage data area can store data created according to the use of the terminal device, etc. In addition, the storage element can include a high-speed random access memory and can also include a non-volatile memory.

[0073] So far, the technical solution of the present invention has been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it is easily understood by those skilled in the art that the protection scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principle of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the present invention.

Claims

1. A control method for an air conditioner, characterized in that, The air conditioner includes an indoor unit and an outdoor unit. The indoor unit includes an indoor heat exchanger and a throttle valve, and the outdoor unit includes a compressor. When the air conditioner stops due to a high-pressure fault, the control method includes: S100: Obtain the opening value X of the throttle valve and / or the operating frequency Y of the compressor when the air conditioner stops; S200: Restart the air conditioner, correct the opening X of the throttle valve to obtain a corrected opening W and / or correct the operating frequency Y of the compressor to obtain a corrected frequency V; S300: When the air conditioner is running, make the opening of the throttle valve not less than the corrected opening W and / or make the operating frequency of the compressor not greater than the corrected frequency V; Wherein, W > X and / or V < Y.

2. The control method of the air conditioner according to claim 1, wherein W = X × t, Wherein, t is a constant.

3. The control method of the air conditioner according to claim 1, wherein V = Y × s, Wherein, s is a constant.

4. The control method of the air conditioner according to claim 1, characterized in that, The control method of the air conditioner further includes: S400: After the operating time of the air conditioner reaches a first preset time T1, make the air conditioner resume normal operation and no longer limit the opening of the throttle valve and / or the operating frequency of the compressor according to S300.

5. The control method of the air conditioner according to claim 1, characterized in that, A plurality of the indoor heat exchangers and the throttle valves are respectively provided. The plurality of indoor heat exchangers are arranged in parallel, and the plurality of throttle valves correspond to the plurality of indoor heat exchangers one by one. The specific steps of "obtaining the opening value X of the throttle valve" include: S101: Obtain the opening of each throttle valve; S102: Compare the openings of the plurality of throttle valves, and the one with the smallest opening is the opening value X.

6. The control method of the air conditioner according to claim 5, wherein The specific steps of "when the air conditioner is running, make the opening of the throttle valve not less than the corrected opening W" include: When the air conditioner is running, make the opening of each throttle valve not less than the corrected opening W.

7. The control method of the air conditioner according to claim 2, wherein, The value range of t is 1.2 to 1.

8.

8. The control method of the air conditioner according to claim 3, characterized in that, The value range of s is 0.6 to 0.

9.

9. The control method of an air conditioner according to any one of claims 1 to 8, characterized in that, The control method further includes: When the shutdown time of the air conditioner reaches a second preset time T2, restart the air conditioner again.

10. An air conditioner, characterized in that, It includes a controller, and the controller is configured to be able to execute the control method according to any one of claims 1 to 9.

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