Method and device for controlling air conditioner and air conditioner

Abstract

The invention relates to the technical field of air conditioner control, and discloses a method for controlling an air conditioner, which comprises the following steps: in response to a refrigerant recovery mode starting instruction, controlling the air conditioner to operate in a refrigeration mode or a dehumidification mode; under the condition that the stable operation duration of the air conditioner reaches the first preset duration, the air conditioner is controlled to close a first electromagnetic valve arranged on a liquid supply pipe; and under the condition that the valve closing duration of the first electromagnetic valve reaches the second preset duration, the air conditioner is controlled to close a second electromagnetic valve arranged on the air return pipe. According to the scheme, accurate recovery of the refrigerant is facilitated, leakage and waste of the refrigerant in the machine moving process are avoided, meanwhile, the process of machine moving operation is simplified, and operation convenience and efficiency are improved. The invention further discloses a device for controlling the air conditioner and the air conditioner.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of air conditioner control, for example to a method and device for controlling an air conditioner and an air conditioner. BACKGROUND

[0002] In the use process of a household split-type air conditioner, due to various reasons such as change of house structure, upgrading of decoration, adjustment of functional area, etc., users often need to change the installation position of the air conditioner. This demand makes the indoor and outdoor units of the air conditioner need to be removed from the original position and reinstalled to the new designated position, i.e. air conditioner moving. However, the handling of the refrigerant of the air conditioner is particularly critical during the air conditioner moving process. Specifically, the refrigerant needs to be completely recovered to the outdoor unit, and the reconnected indoor unit and its pipeline are evacuated after reinstallation to ensure the purity and efficiency of the system after moving. However, this process is not easy for non-professionals to operate. For most users, they often do not have professional knowledge of air conditioner moving and refrigerant handling. If not handled properly, it may cause refrigerant leakage, system pollution, etc., thereby affecting the cooling and heating effect of the air conditioner, and even damaging the air conditioner equipment.

[0003] A refrigerant recovery method is disclosed in the related art, which specifically discloses that when a refrigerant recovery instruction is received, a first connection valve is controlled to be closed, and a compressor is controlled to operate in a cooling mode; the first connection valve is used to control the conduction and disconnection between the indoor unit and a fourth port of a four-way valve, and the fourth port is used to transmit refrigerant to the indoor unit in the cooling mode; if the pressure value of a first pipeline is less than a set value, a second connection valve is controlled to be closed, and the compressor is controlled to stop operating for refrigerant recovery.

[0004] In the process of implementing the embodiments of the present disclosure, it is found that at least the following problems exist in the related art:

[0005] Although the related art can recover refrigerant, the method relies on the monitoring of the pressure value of the pipeline to judge the completion of the refrigerant recovery. However, the measurement of the pressure value of the pipeline may be affected by various factors such as internal pressure fluctuation of the system, sensor accuracy, etc., thereby causing misjudgment or omission. If the recovery is stopped when the pressure value does not reach the set value, it may lead to insufficient refrigerant recovery; on the contrary, if the recovery continues, it may waste time and energy, and even cause unnecessary damage to the system.

[0006] It should be noted that the information disclosed in the above background section is only used to strengthen the understanding of the background of the present application, and therefore can include information that does not constitute prior art known to those of ordinary skill in the art. SUMMARY

[0007] The following presents a simplified summary of some aspects of the disclosure in order to provide a basic understanding of such aspects. This summary is not an extensive overview of the disclosure and is not intended to identify key / critical elements or to delineate the scope of the embodiments. Its sole purpose is to present some aspects of the disclosure in a simplified form as a prelude to the more detailed description that is presented later.

[0008] The embodiments of the present disclosure provide a method and device for controlling an air conditioner and the air conditioner, so as to more accurately perform refrigerant recovery.

[0009] In some embodiments, the method for controlling the air conditioner comprises: in response to a refrigerant recovery mode starting instruction, controlling the air conditioner to operate in a refrigeration mode or a dehumidification mode; in a case where a stable operation duration of the air conditioner reaches a first preset duration, controlling the air conditioner to close a first electromagnetic valve arranged on a liquid supply pipe; in a case where a valve closing duration of the first electromagnetic valve reaches a second preset duration, controlling the air conditioner to close a second electromagnetic valve arranged on a gas return pipe.

[0010] In some embodiments, the method for controlling the air conditioner comprises: obtaining a current ambient temperature; determining a target operating frequency matched with the current ambient temperature according to a preset correspondence relationship; in a case where a current operating frequency of the compressor reaches the target operating frequency, controlling a timing module of the air conditioner to perform timing and taking a timing result as the stable operation duration of the air conditioner.

[0011] In some embodiments, the method for controlling the air conditioner comprises: obtaining a displacement of the air conditioner compressor and a refrigerant charge of the air conditioner; and determining the second preset duration according to the displacement of the air conditioner compressor and the refrigerant charge of the air conditioner.

[0012] In some embodiments, the method for controlling the air conditioner comprises: in a case where the displacement of the air conditioner compressor is the same, the refrigerant charge of the air conditioner is positively correlated with the second preset duration; or in a case where the refrigerant charge of the air conditioner is the same, the displacement of the air conditioner compressor is negatively correlated with the second preset duration.

[0013] In some embodiments, the method for controlling the air conditioner comprises: in a case where the valve closing duration of the second electromagnetic valve reaches a third preset duration, controlling the compressor of the air conditioner to be powered off; sending a closing reminder of a two-way stop valve and a three-way stop valve to a user, so as to remind the user to manually close the two-way stop valve and the three-way stop valve; wherein the two-way stop valve is arranged on the liquid supply pipe and located on an indoor side of the first electromagnetic valve, and the three-way stop valve is arranged on the gas return pipe and located on an indoor side of the second electromagnetic valve.

[0014] In some embodiments, the method for controlling the air conditioner comprises: obtaining a first current value of the air conditioner before refrigerant recovery and a second current value of the air conditioner after refrigerant recovery; calculating a difference between the first current value and the second current value; determining a target prompting strategy of the air conditioner according to the difference between the first current value and the second current value; and controlling the air conditioner to execute the target prompting strategy.

[0015] In some embodiments, the method for controlling the air conditioner comprises: in the case that the difference between the first current value and the second current value is within the preset operation range, determining that the target prompting strategy of the air conditioner is to prompt the user that the refrigerant recovery is completed; or in the case that the difference between the first current value and the second current value is not within the preset operation range, determining that the target prompting strategy of the air conditioner is to prompt the corresponding code to remind the user that the refrigerant recovery is insufficient.

[0016] In some embodiments, the device for controlling the air conditioner comprises: a first module configured to control the air conditioner to operate in the refrigeration mode or the dehumidification mode in response to a refrigerant recovery mode starting instruction; a second module configured to control the air conditioner to close a first electromagnetic valve arranged at a liquid supply pipe in the case that the stable operation duration of the air conditioner reaches a first preset duration; and a third module configured to control the air conditioner to close a second electromagnetic valve arranged at a gas return pipe in the case that the valve closing duration of the first electromagnetic valve reaches a second preset duration.

[0017] In some embodiments, the device for controlling the air conditioner comprises: a processor and a memory storing program instructions, the processor being configured to execute the foregoing method for controlling the air conditioner when executing the program instructions.

[0018] In some embodiments, the air conditioner comprises: an air conditioner body; and the foregoing device for controlling the air conditioner installed on the air conditioner body.

[0019] The method, device and air conditioner for controlling the air conditioner provided by the embodiments of the present disclosure can achieve the following technical effects: the scheme can efficiently guide the refrigerant from the indoor unit to the outdoor unit by controlling the air conditioner to operate in the refrigeration mode or the dehumidification mode, so that, after the air conditioner is stably operated for a first preset duration, the new refrigerant is prevented from entering the indoor unit from the outdoor unit by closing the first electromagnetic valve, and the circulation of the refrigerant between the indoor unit and the outdoor unit is completely isolated by controlling the air conditioner to close the second electromagnetic valve, so as to ensure that the refrigerant will not flow back to the indoor unit through the gas return pipe, so as to perform accurate recovery of the refrigerant, avoid leakage and waste of the refrigerant during the machine moving process, and also simplify the process of the machine moving operation, and improve the convenience and efficiency of the operation.

[0020] The foregoing general description and the following description are only exemplary and explanatory, and are not intended to limit the present application. BRIEF DESCRIPTION OF DRAWINGS

[0021] One or more embodiments are exemplarily illustrated by the corresponding drawings, which do not constitute limitation on the embodiments, and the elements with the same reference numerals in the drawings are shown as similar elements, the drawings do not constitute proportional limitation, and wherein:

[0022] Figure 1-1is a schematic diagram of a method for controlling an air conditioner provided by an embodiment of the present disclosure;

[0023] Figure 1-2 is a schematic diagram of a partial structure of an air conditioner provided by an embodiment of the present disclosure;

[0024] Figure 2 is a schematic diagram of a method for determining a stable running duration provided by an embodiment of the present disclosure;

[0025] Figure 3 is a schematic diagram of a method for determining a second preset duration provided by an embodiment of the present disclosure;

[0026] Figure 4 is another schematic diagram of a method for controlling an air conditioner provided by an embodiment of the present disclosure;

[0027] Figure 5 is another schematic diagram of a method for controlling an air conditioner provided by an embodiment of the present disclosure;

[0028] Figure 6 is a schematic diagram of a device for controlling an air conditioner provided by an embodiment of the present disclosure;

[0029] Figure 7 is another schematic diagram of a device for controlling an air conditioner provided by an embodiment of the present disclosure;

[0030] Figure 8 is a schematic diagram of a structure of an air conditioner provided by an embodiment of the present disclosure.

[0031] Reference signs:

[0032] 1: air conditioner outdoor unit; 2: outdoor unit computer board; 3: electromagnetic valve wire harness; 4: liquid supply pipe; 5: gas return pipe; 6: first electromagnetic valve; 7: second electromagnetic valve; 8: two-way stop valve; 9: three-way stop valve;

[0033] 200(300): device for controlling an air conditioner; 61: first module; 62: second module; 63: third module; 301: processor; 302: memory; 303: communication interface; 304: bus; 100: air conditioner. DETAILED DESCRIPTION

[0034] In order to enable persons skilled in the art to better understand the features and technical contents of the embodiments of the present disclosure, the implementation of the embodiments of the present disclosure will be described in detail below with reference to the drawings, which are only used for reference and do not limit the embodiments of the present disclosure. In the following technical description, in order to facilitate explanation, a plurality of details are provided to provide a full understanding of the disclosed embodiments. However, one or more embodiments can still be implemented without these details. In other cases, in order to simplify the drawings, well-known structures and devices can be simplified.

[0035] The terms "first", "second", and the like in the description and claims of the present disclosure and the above drawings are used to distinguish similar objects, and do not necessarily indicate a specific order or sequence. It should be understood that the data thus used can be interchanged under appropriate circumstances, so that the embodiments of the present disclosure described herein can be implemented. In addition, the terms "comprise" and "have" and any variations thereof are intended to cover non-exclusive inclusion.

[0036] Unless otherwise specified, the term "a plurality of" means two or more.

[0037] In the embodiments of the present disclosure, the character " / " represents an "or" relationship between the preceding and following objects. For example, A / B represents: A or B.

[0038] The term "and / or" is a description of the association relationship between objects, which means that there can be three relationships. For example, A and / or B means: A or B, or, A and B, the three relationships.

[0039] The term "corresponding" can refer to an association relationship or a binding relationship. A and B correspond to each other means that A and B have an association relationship or a binding relationship.

[0040] In the embodiments of the present disclosure, the smart home appliance refers to a home appliance product formed after introducing microprocessors, sensor technology, network communication technology into home appliances, having the characteristics of intelligent control, intelligent sensing and intelligent application. The operation process of the smart home appliance often depends on the application and processing of modern technologies such as the Internet of Things, the Internet and electronic chips. For example, the smart home appliance can realize remote control and management of the smart home appliance by the user through the connection of electronic devices.

[0041] In the embodiments of the present disclosure, the terminal device refers to an electronic device with wireless connection function. The terminal device can be connected to the smart home appliance as above through the Internet, or can be directly connected to the smart home appliance as above through Bluetooth, Wi-Fi and the like. In some embodiments, the terminal device is, for example, a mobile device, a computer, or a built-in vehicle device in a hovercar, or any combination thereof. The mobile device may, for example, include a mobile phone, a smart home device, a wearable device, a smart mobile device, a virtual reality device, or any combination thereof, wherein the wearable device may, for example, include a smart watch, a smart bracelet, a pedometer, and the like.

[0042] Figure 1-2 is a partial structure schematic diagram of an air conditioner provided by the embodiments of the present disclosure; in combination with Figure 1-2As shown, the embodiment of the present disclosure provides an air conditioner, which comprises an air conditioner outdoor unit 1, an outdoor unit computer board 2 and an indoor and outdoor unit online pipe. The indoor and outdoor unit online pipe comprises a liquid supply pipe 4 and a gas return pipe 5. The liquid supply pipe 4 is provided with a first electromagnetic valve 6, and the indoor side of the first electromagnetic valve 6, i.e. the right side in the drawing, is provided with a two-way stop valve 8. The gas return pipe 5 is provided with a second electromagnetic valve 7, and the indoor side of the second electromagnetic valve 7, i.e. the right side in the drawing, is provided with a three-way stop valve 9. Specifically, the first electromagnetic valve 6 and the second electromagnetic valve 7 can be connected to the outdoor unit computer board 2 through an electromagnetic valve wire harness 3.

[0043] Figure 1-1 is a method for controlling an air conditioner provided by the embodiment of the present disclosure; in combination with Figure 1-1 As shown, the embodiment of the present disclosure provides a method for controlling an air conditioner, which comprises the following steps.

[0044] S11, in response to a refrigerant recovery mode starting instruction, the air conditioner controls the air conditioner to run in a refrigeration mode or a dehumidification mode.

[0045] S12, in the case where the stable running duration of the air conditioner reaches a first preset duration, the air conditioner controls the air conditioner to close the first electromagnetic valve arranged on the liquid supply pipe.

[0046] S13, in the case where the valve closing duration of the first electromagnetic valve reaches a second preset duration, the air conditioner controls the air conditioner to close the second electromagnetic valve arranged on the gas return pipe.

[0047] In this scheme, in the case where the air conditioner receives a refrigerant recovery mode starting instruction, the air conditioner can be controlled to run in a refrigeration mode or a dehumidification mode in response to the refrigerant recovery mode starting instruction. In this way, since the compressor is located outdoors, by controlling the air conditioner to run in a refrigeration mode or a dehumidification mode, the refrigerant can be introduced to the compressor and the condenser outdoors through the liquid supply pipe and the gas return pipe, so as to realize the concentration and recovery of the refrigerant.

[0048] Further, the air conditioner can determine a stable operation duration. Specifically, the stable operation duration of the air conditioner is obtained by: the air conditioner obtaining a current ambient temperature. The air conditioner determines a target operating frequency matched with the current ambient temperature according to a preset correspondence relationship. In a case where the current operating frequency of the compressor reaches the target operating frequency, the air conditioner controls a timing module of the air conditioner to time, and takes the timing result as the stable operation duration of the air conditioner. In this way, the stable operation duration can be accurately obtained. Thus, in a case where the stable operation duration of the air conditioner reaches a first preset duration, the air conditioner controls the air conditioner to close the first electromagnetic valve arranged on the liquid supply pipe. As an example, the first preset duration can be stored in the air conditioner in advance. For example, the first preset duration is 2 minutes or 3 minutes. In this way, since the liquid supply pipe is connected to the indoor unit and the condenser of the outdoor unit, the new refrigerant can be prevented from entering the indoor unit from the condenser by closing the first electromagnetic valve, so that the refrigerant already existing in the system is mainly concentrated in the outdoor part.

[0049] Further, in a case where the valve closing duration of the first electromagnetic valve reaches a second preset duration, the air conditioner controls the air conditioner to close the second electromagnetic valve arranged on the gas return pipe. The second preset duration can be determined by: the air conditioner obtaining a displacement of the air conditioner compressor and a refrigerant charge of the air conditioner. The air conditioner determines the second preset duration according to the displacement of the air conditioner compressor and the refrigerant charge of the air conditioner.

[0050] By using the method for controlling the air conditioner provided in the embodiments of the present disclosure, the refrigerant can be efficiently drained from the indoor unit to the outdoor unit by controlling the air conditioner to operate in the cooling mode or the dehumidifying mode, so that the new refrigerant can be prevented from entering the indoor unit from the outdoor unit by closing the first electromagnetic valve after the air conditioner is stably operated for the first preset duration, and the refrigerant circulation between the indoor unit and the outdoor unit can be completely isolated by controlling the air conditioner to close the second electromagnetic valve, so as to ensure that the refrigerant cannot flow back to the indoor unit through the gas return pipe, so as to accurately recover the refrigerant, avoid the leakage and waste of the refrigerant during the machine moving process, and simplify the process of the machine moving operation, and improve the convenience and efficiency of the operation.

[0051] Figure 2 is a schematic diagram of a method for determining a stable operation duration provided in the embodiments of the present disclosure; in combination with Figure 2 As shown in FIG. 8, the stable operation duration of the air conditioner can be obtained by: the air conditioner obtaining a current ambient temperature.

[0052] S21, the air conditioner obtains a current ambient temperature.

[0053] S22, the air conditioner determines a target operating frequency matched with the current ambient temperature according to a preset correspondence relationship.

[0054] S23, in the case where the current operating frequency of the compressor reaches the target operating frequency, the air conditioner controls the timing module of the air conditioner to time, and the timing result is taken as the stable running time length of the air conditioner.

[0055] In this scheme, the air conditioner can obtain the current ambient temperature through its associated ambient temperature sensor. With this scheme, accurate acquisition of the current ambient temperature can be achieved.

[0056] Further, the air conditioner stores a preset correspondence relationship. Here, the preset correspondence relationship is the target operating frequency of the compressor corresponding to different ambient temperatures. In this way, the air conditioner can determine the target operating frequency matching the current ambient temperature in combination with the preset correspondence relationship. With this scheme, accurate determination of the target operating frequency can be achieved.

[0057] Further, in the case where the current operating frequency of the compressor reaches the target operating frequency, the air conditioner controls the timing module of the air conditioner to time, and the timing result is taken as the stable running time length of the air conditioner. With this scheme, the target operating frequency of the compressor can be automatically determined in combination with the current environmental condition, and the stable running time length is recorded after reaching the target operating frequency. This not only improves the intelligent level of air conditioner operation, but also ensures the efficient and stable operation of the air conditioner under different environments, and improves the user experience.

[0058] Figure 3 is a method for determining a second preset time length provided by an embodiment of the present disclosure; in combination with Figure 3 As shown in the figure, optionally, the second preset time length is determined by the following method:

[0059] S31, the air conditioner obtains the displacement of the air conditioner compressor and the refrigerant charge of the air conditioner.

[0060] S32, the air conditioner determines the second preset time length according to the displacement of the air conditioner compressor and the refrigerant charge of the air conditioner.

[0061] In this scheme, the air conditioner can calculate the displacement of the air conditioner compressor in various ways. In one example, the displacement of the air conditioner compressor can be obtained by querying the technical specification book or nameplate of the air conditioner. In another example, the displacement of the air conditioner compressor can be calculated by measuring some parameters of the compressor, such as piston stroke, piston area, speed, etc., and using the piston displacement method or rotor centrifugal force method. With this scheme, accurate acquisition of the displacement of the air conditioner compressor can be achieved. In addition, the refrigerant charge can also be determined by factors such as the refrigerating capacity of the air conditioner, the displacement of the compressor, and the system pipeline design. It can be understood that in actual application, the accurate refrigerant charge can also be obtained by checking the installation manual of the air conditioner or consulting the manufacturer. With this scheme, accurate acquisition of the refrigerant charge of the air conditioner can be achieved.

[0062] Further, after the air conditioner obtains the displacement of the air conditioner compressor and the refrigerant charge of the air conditioner, the second preset time length can be determined in combination with a pre-stored correspondence relationship between the displacement of the air conditioner compressor, the refrigerant charge of the air conditioner and the second preset time length. With this scheme, accurate determination of the second preset time length can be achieved.

[0063] It can be understood that the pipeline design of the air conditioning system and environmental factors also affect the determination of the second preset time length. Here, the pipeline design of the air conditioning system refers to parameters such as the length, diameter and layout of the pipeline. Environmental factors include indoor temperature and humidity, etc. Therefore, the second preset time length can also be determined in combination with the pipeline design of the air conditioning system and environmental factors. With this scheme, accurate determination of the second preset time length can be achieved.

[0064] Alternatively, in the case of the same displacement of the air conditioner compressor, the refrigerant charge of the air conditioner is positively correlated with the second preset time length. Or, in the case of the same refrigerant charge of the air conditioner, the displacement of the air conditioner compressor is negatively correlated with the second preset time length.

[0065] In this scheme, the second preset time length can also be determined through the debugging data of the air conditioner development process. Specifically, in the case of the same displacement of the air conditioner compressor, the refrigerant charge of the air conditioner is positively correlated with the second preset time length. Or, in the case of the same refrigerant charge of the air conditioner, the displacement of the air conditioner compressor is negatively correlated with the second preset time length. With this scheme, accurate determination of the second preset time length is facilitated.

[0066] Figure 4 is another method for controlling an air conditioner provided by an embodiment of the present disclosure; in combination with Figure 4 As shown in the figure, optionally, after the air conditioner controls the second electromagnetic valve arranged in the return air pipe to be closed, it further includes:

[0067] S41, in the case where the closing time length of the second electromagnetic valve reaches the third preset time length, the air conditioner controls the compressor of the air conditioner to be powered off.

[0068] S42, the air conditioner sends a closing reminder of the two-way stop valve and the three-way stop valve to the user to remind the user to manually close the two-way stop valve and the three-way stop valve.

[0069] Among them, the two-way stop valve is arranged in the liquid supply pipe and located on the indoor side of the first electromagnetic valve, and the three-way stop valve is arranged in the return air pipe and located on the indoor side of the second electromagnetic valve.

[0070] In this scheme, the timing module can be used for timing to record the valve closing duration of the second electromagnetic valve. When the valve closing duration of the second electromagnetic valve reaches the third preset duration, the air conditioner controls the compressor of the air conditioner to be powered off. The third preset duration can be 5 seconds. In this way, the power-off timing of the compressor can be accurately determined, and the compressor can be prevented from running for a long time without effect, thereby saving energy and prolonging the service life of the equipment. At the same time, in order to ensure that the electromagnetic valve fully responds and completes its action, a reasonable delay time can be reserved before power-off.

[0071] It can be understood that in the refrigerant recovery mode, after the compressor is powered off, although the main machine power is still in the open state, the electromagnetic valve will remain in the closed state. This design ensures that the refrigerant can safely stay in the outdoor unit during the recovery process, effectively preventing it from flowing back to the indoor unit, thereby avoiding possible refrigerant leakage and mixing problems. However, if the main machine is completely powered off, the electromagnetic valve will lose power support and fail, thereby remaining in the open state. At this time, if the two-way stop valve and the three-way stop valve are not manually closed, the refrigerant may flow back to the indoor unit, which not only may cause waste of refrigerant, but also may adversely affect the operation of the indoor unit. Therefore, in order to ensure the thoroughness of refrigerant recovery and the smoothness of disassembly, the user can be reminded to manually close the two-way stop valve and the three-way stop valve after the compressor is powered off, but the main machine is still powered on. This operation will effectively separate the refrigerant in the outdoor unit, providing safety for subsequent disassembly work, and also ensuring the efficiency and reliability of the entire recovery process. Specifically, the air conditioner can send a closing reminder of the two-way stop valve and the three-way stop valve to the user to remind the user to manually close the two-way stop valve and the three-way stop valve. In one example, the closing reminder can be sent to the user through a system interface, a mobile phone application, or a short message. The reminder content will clearly inform the user of the type and location of the valve that needs to be closed, and will also attach simple closing steps or operation guidelines, so that the user can easily complete the closing task. It should be noted that the two-way stop valve is arranged on the liquid supply pipe and located on the indoor side of the first electromagnetic valve, and the three-way stop valve is arranged on the gas return pipe and located on the indoor side of the second electromagnetic valve. In this way, the user can safely perform refrigerant recovery and disassembly work without worrying about refrigerant leakage or backflow problems, thereby ensuring the overall performance and stability of the air conditioning system.

[0072] Figure 5 is another method for controlling an air conditioner provided by the embodiments of the present disclosure; in combination with Figure 5 As shown in the figure, optionally, after the user manually closes the two-way stop valve and the three-way stop valve, the method further comprises:

[0073] S51, the air conditioner obtains a first current value before refrigerant recovery of the air conditioner and a second current value after refrigerant recovery of the air conditioner.

[0074] S52, the air conditioner calculates the difference between the first current value and the second current value.

[0075] S53, the air conditioner determines the target prompt strategy of the air conditioner according to the difference between the first current value and the second current value.

[0076] S54, the air conditioner controls the air conditioner to execute the target prompt strategy.

[0077] In this scheme, the air conditioner obtains the first current value before refrigerant recovery and the second current value after refrigerant recovery. Here, the first current value and the second current value are both detected current values of the compressor. The first current value reflects the current consumption of the air conditioner in the normal running state, providing basic data for subsequent analysis. The second current value reflects the influence of the recovery operation on the current consumption of the air conditioner, and is an important basis for judging the recovery effect.

[0078] Further, the air conditioner can calculate the difference between the first current value and the second current value. And determine the target prompt strategy of the air conditioner in combination with the difference between the first current value and the second current value. Specifically, the air conditioner determines the target prompt strategy of the air conditioner according to the difference between the first current value and the second current value, including: in the case that the difference between the first current value and the second current value is in a preset running range, the air conditioner determines that the target prompt strategy of the air conditioner is to prompt the user that the refrigerant recovery is completed. Or, in the case that the difference between the first current value and the second current value is not in the preset running range, the air conditioner determines that the target prompt strategy of the air conditioner is to prompt the corresponding code to remind the user that the refrigerant recovery is insufficient. Here, the preset running range can be set in advance. With this scheme, the target prompt strategy of the air conditioner can be accurately determined in combination with the difference between the first current value and the second current value.

[0079] Further, the air conditioner can control the air conditioner to execute the target prompt strategy. With this scheme, the current change before and after the refrigerant recovery can be intelligently determined to provide targeted prompts and suggestions for the user, helping the user to better manage and maintain the air conditioning system, and improving the use effect and energy saving performance.

[0080] Optionally, S53, the air conditioner determines the target prompt strategy of the air conditioner according to the difference between the first current value and the second current value, including:

[0081] In the case that the difference between the first current value and the second current value is in a preset running range, the air conditioner determines that the target prompt strategy of the air conditioner is to prompt the user that the refrigerant recovery is completed. Or,

[0082] In the case that the difference between the first current value and the second current value is not in the preset running range, the air conditioner determines that the target prompt strategy of the air conditioner is to prompt the corresponding code to remind the user that the refrigerant recovery is insufficient.

[0083] In this scheme, when the current difference is within the preset operating range, it can be accurately determined that the refrigerant recovery has been completed, and the corresponding prompt information is sent to the user. This strategy can timely inform the user of the completion of the recovery operation, enhancing the user's satisfaction. At the same time, by prompting the user that the refrigerant recovery is complete, it can also encourage the user to perform subsequent disassembly or other operations, improving the overall operation continuity and efficiency.

[0084] In addition, when the current difference is not within the preset operating range, it can be identified that the refrigerant recovery is insufficient, and the user is reminded by prompting the corresponding code. This strategy helps users to timely discover problems in the recovery operation and take appropriate measures to solve them. By providing specific code prompts, users can quickly locate the problem according to the code information, reducing the time and difficulty of troubleshooting.

[0085] With this scheme, by automatically detecting the current difference and determining the target prompt strategy, the air conditioner can realize real-time monitoring and judgment of the refrigerant recovery state, reducing the need for manual intervention. Not only can it improve the convenience and accuracy of operation, but also can reduce errors and omissions caused by human factors, improving the operation stability and reliability of the entire air conditioning system.

[0086] It should be noted that the setting of the preset operating range is crucial to the effectiveness of the scheme. If the range is set too wide, it may not be able to accurately determine the completion of the refrigerant recovery; if the range is set too narrow, it may misjudge the recovery state due to small current fluctuations. Therefore, in actual application, reasonable range setting needs to be made according to the specific characteristics and actual operation of the air conditioning system.

[0087] In a preferred scheme, after the refrigerant recovery is completed and the air conditioner connection pipe is reconnected, the two-way stop valve and the three-way stop valve are fully opened. In this way, the circulation of refrigerant between the indoor unit and the outdoor unit can be controlled. Through correct operation and maintenance, the normal operation and high efficiency of the air conditioning system can be effectively ensured.

[0088] Figure 6 is a schematic diagram of an apparatus for controlling an air conditioner provided by an embodiment of the present disclosure; in conjunction with Figure 6 As shown in the figure, optionally, the present disclosure provides an apparatus 200 for controlling an air conditioner, comprising a first module 61, a second module 62 and a third module 63. The first module 61 is configured to control the air conditioner to run in a refrigeration mode or a dehumidification mode in response to a refrigerant recovery mode start instruction; the second module 62 is configured to control the air conditioner to close a first electromagnetic valve arranged on a liquid supply pipe when the stable running time of the air conditioner reaches a first preset time; and the third module 63 is configured to control the air conditioner to close a second electromagnetic valve arranged on a return air pipe when the valve closing time of the first electromagnetic valve reaches a second preset time.

[0089] The device 200 for controlling the air conditioner provided by the embodiment of the present disclosure can efficiently guide the refrigerant from the indoor unit to the outdoor unit by controlling the air conditioner to run in the cooling mode or the dehumidifying mode, so that after the air conditioner stably runs for a first preset time length, the new refrigerant is prevented from entering the indoor unit from the outdoor unit by closing the first electromagnetic valve, and the refrigerant circulation between the indoor unit and the outdoor unit is completely isolated by controlling the air conditioner to close the second electromagnetic valve, so as to ensure that the refrigerant cannot flow back to the indoor unit through the return air pipe, so as to accurately recover the refrigerant, avoid the leakage and waste of the refrigerant during the moving of the air conditioner, and also simplify the process of the moving operation, and improve the convenience and efficiency of the operation.

[0090] Figure 7 is another schematic diagram of a device for controlling an air conditioner provided by the embodiment of the present disclosure; in combination with Figure 7 As shown in the figure, optionally, the present disclosure provides a device 300 for controlling an air conditioner, which comprises a processor 301 and a memory 302. Optionally, the device 300 can further comprise a communication interface 303 and a bus 304. Wherein the processor 301, the communication interface 303 and the memory 302 can complete the communication among each other through the bus 304. The communication interface 303 can be used for information transmission. The processor 301 can call the logical instructions in the memory 302 to execute the method for controlling the air conditioner of the above-mentioned embodiments.

[0091] In addition, the logical instructions in the memory 302 described above can be implemented in the form of a software function unit and sold or used as an independent product, which can be stored in a computer readable storage medium.

[0092] The memory 302 as a kind of computer readable storage medium can be used to store software programs, computer executable programs, such as program instructions / modules corresponding to the method in the embodiment of the present disclosure. The processor 301 executes the program instructions / modules stored in the memory 302, thereby executing the function application and data processing, i.e. realizing the method for controlling the air conditioner in the above-mentioned embodiments.

[0093] The memory 302 can include a program storage area and a data storage area, wherein the program storage area can store an operating system and at least one application required by a function; the data storage area can store data created according to the use of the terminal device, etc. In addition, the memory 302 can include a high-speed random access memory, and can also include a non-volatile memory.

[0094] Figure 8 is a structural schematic diagram of an air conditioner provided by the embodiment of the present disclosure; in combination with Figure 8As shown, the embodiment of the present disclosure provides an air conditioner 100, comprising: an air conditioner body, and the above-mentioned device 200 (300) for controlling air conditioner. The mounting relationship expressed herein is not limited to placing in the interior of the air conditioner body, but also includes mounting connection with other components of the air conditioner 100, including but not limited to physical connection, electrical connection or signal transmission connection, etc. Those skilled in the art can understand that the device 200 (300) for controlling air conditioner can be adapted to the feasible air conditioner body, and then realize other feasible embodiments.

[0095] The embodiment of the present disclosure provides a computer readable storage medium, which stores computer executable instructions, and the computer executable instructions are configured to execute the above-mentioned method for controlling air conditioner.

[0096] The technical scheme of the embodiment of the present disclosure can be embodied in the form of a software product. The computer software product is stored in a storage medium and includes one or more instructions to make a computer device (which can be a personal computer, a server, or a network device, etc.) execute all or part of the steps of the method described in the embodiment of the present disclosure. The aforementioned storage medium can be a non-transitory storage medium, such as a U disk, a mobile hard disk, a read-only memory (ROM, Read-Only Memory), a random access memory (RAM, Random Access Memory), a magnetic disk or an optical disk, and various media that can store program codes.

[0097] The above description and the accompanying drawings fully illustrate the embodiments of the present disclosure so that those skilled in the art can practice them. Other embodiments may include structural, logical, electrical, process and other changes. The embodiments represent only possible variations. Unless explicitly required, individual components and functions are optional, and the order of operations may vary. Parts and features of some embodiments may be included in or replace parts and features of other embodiments. Moreover, the words used in this application are only used to describe the embodiments and are not used to limit the claims. As used in the description of the embodiments and claims, unless the context clearly indicates otherwise, the singular forms "a", "an" and "the" are intended to also include plural forms. Similarly, the term "and / or" as used in this application refers to any and all possible combinations of one or more associated listings. In addition, when used in this application, the term "comprise" and its variations "comprises" and / or comprising refer to the presence of stated features, wholes, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, wholes, steps, operations, elements, components and / or groups of these. In the absence of further restrictions, an element defined by the sentence "comprising a..." does not exclude the presence of other identical elements in the process, method or device that includes the element. In this article, each embodiment may focus on the differences from other embodiments, and the same and similar parts between the various embodiments can be referenced to each other. For the methods, products, etc. disclosed in the embodiments, if they correspond to the method part disclosed in the embodiments, then the relevant parts can be found in the description of the method part.

[0098] Those skilled in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software may depend on the specific application and design constraints of the technical solution. The technicians may use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of the embodiments of the present disclosure. The technicians will clearly understand that, for the convenience and brevity of description, the specific working processes of the systems, devices and units described above can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

[0099] In the embodiments disclosed herein, the disclosed methods, products (including but not limited to apparatuses, devices, etc.) can be implemented in other manners. For example, the described apparatus embodiments are merely schematic. For example, the division of the units is merely a logical function division. There can be another division manner for the actual implementation, for example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. In addition, the displayed or discussed mutual couplings or direct couplings or communication connections between different units, or among them, can be indirect couplings or communication connections through some interfaces, devices, or units, and can be in electric, mechanical, or other forms.

[0100] The flowcharts and block diagrams in the drawings show the possible implementation architectures, functions, and operations of the system, method, and computer program product according to the embodiments of the present disclosure. In this regard, each block in the flowcharts or block diagrams can represent a module, a program segment, or a part of code, which contains one or more executable instructions for implementing the specified logical function. In some alternative implementations, the functions noted in the blocks can occur in an order different from that noted in the drawings. For example, two consecutive blocks can actually be executed substantially in parallel, and sometimes they can be executed in reverse order, depending on the functions involved. In the descriptions corresponding to the flowcharts and block diagrams in the drawings, the operations or steps corresponding to different blocks can also occur in an order different from that disclosed in the descriptions, and sometimes there is no specific order between different operations or steps. For example, two consecutive operations or steps can actually be executed substantially in parallel, and sometimes they can be executed in reverse order, depending on the functions involved. Each block in the block diagrams and / or flowcharts, and the combination of blocks in the block diagrams and / or flowcharts, can be implemented by a dedicated hardware-based system that performs the specified functions or actions, or can be implemented by a combination of dedicated hardware and computer instructions.

Claims

1. A method for controlling an air conditioner, characterized by, The method comprises the following steps: controlling the air conditioner to run in a cooling mode or a dehumidifying mode in response to a refrigerant recovery mode starting instruction; controlling the air conditioner to close a first electromagnetic valve arranged on a liquid supply pipe when a stable running duration of the air conditioner reaches a first preset duration; controlling the air conditioner to close a second electromagnetic valve arranged on a gas return pipe when a valve closing duration of the first electromagnetic valve reaches a second preset duration.

2. The method of claim 1, wherein, The stable running duration of the air conditioner is obtained by the following method: obtaining a current ambient temperature; determining a target running frequency matched with the current ambient temperature according to a preset correspondence relationship; controlling a timing module of the air conditioner to time and taking a timing result as the stable running duration of the air conditioner when a current running frequency of the compressor reaches the target running frequency.

3. The method of claim 1, wherein, The second preset duration is determined by the following method: obtaining a displacement of the air conditioner compressor and a refrigerant charge of the air conditioner; determining the second preset duration according to the displacement of the air conditioner compressor and the refrigerant charge of the air conditioner.

4. The method of claim 3, wherein, The method comprises the following: when the displacement of the air conditioner compressor is the same, the refrigerant charge of the air conditioner is positively correlated with the second preset duration; or when the refrigerant charge of the air conditioner is the same, the displacement of the air conditioner compressor is negatively correlated with the second preset duration. After the second electromagnetic valve arranged on the gas return pipe is closed, the method further comprises the following steps:

5. The method of claim 1, wherein, controlling the compressor of the air conditioner to be powered off when a valve closing duration of the second electromagnetic valve reaches a third preset duration; sending a closing reminder of a two-way stop valve and a three-way stop valve to the user to remind the user to manually close the two-way stop valve and the three-way stop valve, wherein the two-way stop valve is arranged on the liquid supply pipe and located on an indoor side of the first electromagnetic valve, and the three-way stop valve is arranged on the gas return pipe and located on an indoor side of the second electromagnetic valve. After the two-way stop valve and the three-way stop valve are manually closed by the user, the method further comprises the following steps: obtaining a first current value of the air conditioner before refrigerant recovery and a second current value of the air conditioner after refrigerant recovery; 6. The method of claim 5, wherein, calculating a difference between the first current value and the second current value; determining a target prompt strategy of the air conditioner according to the difference between the first current value and the second current value; controlling the air conditioner to execute the target prompt strategy. The method of determining the target prompt strategy of the air conditioner according to the difference between the first current value and the second current value comprises the following: when the difference between the first current value and the second current value is within a preset running range, determining that the target prompt strategy of the air conditioner is to prompt the user that the refrigerant recovery is completed; or 7. The method of claim 6, wherein, when the difference between the first current value and the second current value is not within the preset running range, determining that the target prompt strategy of the air conditioner is to prompt a corresponding code to remind the user that the refrigerant recovery is insufficient. The method comprises the following: a first module configured to control the air conditioner to run in a cooling mode or a dehumidifying mode in response to a refrigerant recovery mode starting instruction; 8. A device for controlling an air conditioner, characterized in that: a second module configured to control the air conditioner to close a first electromagnetic valve arranged on a liquid supply pipe when a stable running duration of the air conditioner reaches a first preset duration; a third module configured to control the air conditioner to close a second electromagnetic valve arranged on a gas return pipe when a valve closing duration of the first electromagnetic valve reaches a second preset duration. The processor is configured to execute the method for controlling the air conditioner as claimed in any one of claims 1 to 7 when the program instructions are run. The air conditioner comprises the following:

9. An apparatus for controlling an air conditioner, comprising a processor and a memory having stored program instructions, wherein, ​ 10. An air conditioner characterized by comprising: ​ ​ The apparatus for controlling an air conditioner as claimed in claim 8 or 9, is installed in the body of the air conditioner.

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