Control method and device for air conditioner, air conditioner, storage medium

Abstract

The application relates to the technical field of air conditioners, and discloses a control method for an air conditioner, wherein the air conditioner is provided with a refrigerant circulation loop and a supply device containing liquid refrigerant, the refrigerant circulation loop and the supply device are communicated through a pipeline, the pipeline is provided with a control valve, the method comprises the following steps: obtaining a refrigerant leakage degree of the refrigerant circulation loop; determining a target opening value corresponding to the refrigerant leakage degree according to the refrigerant leakage degree; and controlling the control valve to operate at the target opening value, so that the liquid refrigerant is sucked into the refrigerant circulation loop through the pipeline. The method can improve the accuracy of refrigerant supply. The application further discloses a control device for an air conditioner, an air conditioner and a storage medium.

Description

TECHNICAL FIELD

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

[0002] At present, during use of an air conditioner, the refrigerant may be slowly lost. In the case of refrigerant loss, the refrigerating and / or heating effect of the air conditioner will be affected to a certain extent. In addition, in the case of large refrigerant loss, the air conditioner may malfunction, such as abnormal shutdown. Therefore, how to supplement refrigerant in time when refrigerant is lost or leaks during operation of the air conditioner is a technical problem to be solved at present.

[0003] A related technology discloses a refrigerant supplement device, which comprises a refrigerant storage tank, a capillary tube, a flow control valve, a pressure sensor and a control module. The refrigerant storage tank is communicated with a suction pipe of a compressor through the capillary tube, and is used to supplement refrigerant to the compressor. The pressure sensor is installed on the suction pipe of the compressor, and is used to detect an actual measured pressure value of the refrigerant when the compressor is sucking. The flow control valve is arranged on the capillary tube, and is used to control the opening degree according to a flow control instruction, so that the flow of the refrigerant supplement is within a preset flow range. The control module is electrically connected with the pressure sensor and the flow control valve, and is used to compare the actual measured pressure value of the refrigerant with a normal pressure value to obtain a refrigerant deficiency value, and send a flow control instruction to the flow control valve when the refrigerant deficiency value is lower than a set threshold. The refrigerant supplement device disclosed by the related technology judges that the refrigerant is deficient when the refrigerant deficiency value is lower than the set threshold, and sends a flow control instruction to the flow control valve to control the opening degree thereof, so as to supplement an appropriate amount of refrigerant.

[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] The refrigerant supplement device adopted by the related technology only compares the refrigerant deficiency value with a set threshold, and cannot obtain the specific refrigerant supplement amount, so the accuracy of refrigerant supplement is poor. SUMMARY

[0006] To provide a basic understanding of some aspects of the disclosed embodiments, the following brief summary is given. The summary is not an overall description of the embodiments, nor is it intended to determine key / important elements or delineate the scope of the protection of these embodiments, but as a prelude to the detailed description below.

[0007] The embodiments of the present disclosure provide a control method and device for an air conditioner, an air conditioner and a storage medium, so as to improve the accuracy of refrigerant supplement.

[0008] In some embodiments, the air conditioner is configured with a refrigerant circulation loop and a supply device containing liquid refrigerant, the refrigerant circulation loop is in communication with the supply device through a pipeline, the pipeline is configured with a control valve, the method comprises: obtaining the refrigerant leakage degree of the refrigerant circulation loop; determining a target opening value corresponding to the refrigerant leakage degree according to the refrigerant leakage degree; controlling the control valve to operate at the target opening value, so that the liquid refrigerant is sucked into the refrigerant circulation loop through the pipeline.

[0009] In some embodiments, the device comprises: a processor and a memory storing program instructions, the processor is configured to execute the control method for the air conditioner as described above when running the program instructions.

[0010] In some embodiments, an air conditioner comprises a control device for the air conditioner as described above.

[0011] In some embodiments, a storage medium stores program instructions, the program instructions execute the control method for the air conditioner as described above when running.

[0012] The control method for the air conditioner, the device, the air conditioner and the storage medium provided by the embodiments of the present disclosure can achieve the following technical effects:

[0013] After the air conditioner determines the target opening value corresponding to the refrigerant leakage degree of the refrigerant circulation loop, the control valve on the pipeline is controlled to operate at the target opening value. The embodiments of the present disclosure can accurately obtain the target opening value corresponding to the refrigerant leakage degree, and accurately input the refrigerant stored in the supply device into the refrigerant circulation loop by controlling the opening value of the control valve, thereby improving the accuracy of refrigerant supply.

[0014] The general description above and the following description below are exemplary and explanatory only and are not intended to be limiting of the present application. BRIEF DESCRIPTION OF DRAWINGS

[0015] One or more embodiments are exemplified by the accompanying drawings corresponding thereto, which are exemplary and explanatory and do not constitute a limitation on the embodiments, elements with the same reference numerals in the drawings are shown as similar elements, the drawings do not constitute a proportional limit, and wherein:

[0016] Figure 1 is a structural schematic diagram of an air conditioner provided by the embodiments of the present disclosure;

[0017] Figure 2 is a schematic diagram of a control method for an air conditioner provided by the embodiments of the present disclosure;

[0018] Figure 3is a schematic diagram of another control method for an air conditioner provided by an embodiment of the present disclosure;

[0019] Figure 4 is a schematic diagram of another control method for an air conditioner provided by an embodiment of the present disclosure;

[0020] Figure 5 is a schematic diagram of another control method for an air conditioner provided by an embodiment of the present disclosure;

[0021] Figure 6 is a schematic diagram of another control method for an air conditioner provided by an embodiment of the present disclosure;

[0022] Figure 7 is a schematic diagram of another control method for an air conditioner provided by an embodiment of the present disclosure;

[0023] Figure 8 is a schematic diagram of a control device for an air conditioner provided by an embodiment of the present disclosure. DETAILED DESCRIPTION

[0024] In order to enable persons skilled in the art to more fully understand the features and technical contents of the embodiments of the present disclosure, the implementation of the embodiments of the present disclosure is described in detail below with reference to the accompanying 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, well-known structures and devices can be simplified to facilitate the drawings.

[0025] The terms "first", "second", and the like in the specification and claims of the embodiments of the present disclosure and the above-mentioned drawings are used to distinguish similar objects and do not necessarily describe a specific order or sequence. It should be understood that the data thus used can be interchanged under appropriate circumstances to implement the embodiments of the present disclosure described herein. In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion.

[0026] Unless otherwise specified, the term "a plurality of" means two or more.

[0027] In the embodiments of the present disclosure, the character " / " represents an "or" relationship between the objects before and after it. For example, A / B represents: A or B.

[0028] The term "and / or" is a description of the association 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.

[0029] The term "corresponding" can refer to a kind of association or binding relationship, A corresponding to B means that there is an association or binding relationship between A and B.

[0030] During the operation phase of the air conditioner, how to supplement the refrigerant in time when the refrigerant is lost or leaked is a technical problem that needs to be solved at present.

[0031] The related technology discloses a refrigerant supplement device, which comprises a refrigerant storage tank, a capillary tube, a flow control valve, a pressure sensor and a control module. The refrigerant storage tank is communicated with the suction pipe of the compressor through the capillary tube, and is used to supplement the refrigerant to the compressor. The pressure sensor is installed on the suction pipe of the compressor, and is used to detect the measured pressure value of the refrigerant when the compressor is suctioned. The flow control valve is arranged on the capillary tube, and the flow control valve is used to control the opening degree according to the flow control instruction, so that the flow of the refrigerant supplement is within the preset flow range. The control module is electrically connected with the pressure sensor and the flow control valve respectively, and is used to compare the measured pressure value of the refrigerant with the normal pressure value to obtain the lack value of the refrigerant, and send the flow control instruction to the flow control valve when the lack value of the refrigerant is lower than the set threshold value. The refrigerant supplement device disclosed by the related technology judges that the refrigerant is lacking when the lack value of the refrigerant is lower than the set threshold value, and sends the flow control instruction to the flow control valve to control the opening degree, so as to supplement the appropriate amount of refrigerant.

[0032] The refrigerant supplement device adopted by the related technology only compares the lack value of the refrigerant with a set threshold value, and cannot know the specific refrigerant supplement amount, so that the accuracy of the refrigerant supplement is poor.

[0033] In combination with Figure 1 As shown in the figure, the embodiment of the present disclosure provides an air conditioner. The air conditioner is configured with a refrigerant circulation loop and a supplement device 200 containing liquid refrigerant. The refrigerant circulation loop and the supplement device 200 are communicated and arranged through a pipeline 300. The pipeline 300 is configured with a control valve 301. The refrigerant circulation loop is configured with a throttling element.

[0034] Based on the structure of the air conditioner, in combination with Figure 2 As shown in the figure, the embodiment of the present disclosure provides a control method for an air conditioner, comprising:

[0035] S01, the air conditioner obtains the refrigerant leakage degree of the refrigerant circulation loop.

[0036] S02, the air conditioner determines the target opening degree value corresponding to the refrigerant leakage degree according to the refrigerant leakage degree.

[0037] S03, the air conditioner controls the control valve to operate at the target opening degree value, so that the liquid refrigerant is suctioned into the refrigerant circulation loop through the pipeline.

[0038] The control method for the air conditioner provided by the embodiment of the present disclosure is used, and the air conditioner determines the target opening value corresponding to the refrigerant leakage degree of the refrigerant circulation loop, and then controls the control valve on the pipeline to operate at the target opening value. The embodiment of the present disclosure can accurately obtain the target opening value corresponding to the refrigerant leakage degree, and accurately input the refrigerant stored in the replenishing device into the refrigerant circulation loop by controlling the opening value of the control valve, thereby improving the accuracy of refrigerant replenishment.

[0039] In addition, when the air conditioner determines that the refrigerant leaks, if the amount of replenished refrigerant is large, the amount of refrigerant sucked into the refrigerant circulation loop will be too large when the refrigerant is replenished by controlling the valve. However, the embodiment of the present disclosure controls the control valve to operate at the target opening value corresponding to the refrigerant leakage degree, so that the controllability of the amount of replenished refrigerant is higher.

[0040] Optionally, the control valve can be an electromagnetic valve, a needle valve, or an electric valve. The type of the control valve is not limited in the embodiment of the present disclosure.

[0041] Optionally, in combination with Figure 3 As shown in the figure, the air conditioner determines the target opening value corresponding to the refrigerant leakage degree according to the refrigerant leakage degree, and the method comprises the following steps:

[0042] S11, when the refrigerant leakage degree indicates that the refrigerant leaks slightly, the air conditioner determines that the target opening value is a first opening.

[0043] S12, when the refrigerant leakage degree indicates that the refrigerant leaks moderately, the air conditioner determines that the target opening value is a second opening.

[0044] S13, when the refrigerant leakage degree indicates that the refrigerant leaks severely, the air conditioner determines that the target opening value is a third opening.

[0045] The third opening is greater than the second opening, and the second opening is greater than the first opening.

[0046] In this way, the air conditioner determines the missing degree of the refrigerant according to the refrigerant leakage degree. Then, the corresponding target opening value is determined according to the missing degree of the refrigerant, so that the target opening value matches the missing degree of the refrigerant. Specifically, when the refrigerant leakage degree indicates that the refrigerant leaks slightly, the refrigerant leaks slightly. When the refrigerant leakage degree indicates that the refrigerant leaks moderately, the refrigerant leaks moderately. When the refrigerant leakage degree indicates that the refrigerant leaks severely, the refrigerant leaks severely.

[0047] It can be understood that when the refrigerant leakage degree indicates that the refrigerant leaks severely, the air conditioner pushes a prompt information to prompt the user to contact the after-sales personnel for timely maintenance. The prompt information includes but is not limited to text information, audio information, and vibration information.

[0048] In actual application, the control valve comprises a needle valve. When the air conditioner determines that the refrigerant is slightly leaked, the first opening degree of the needle valve is determined as 10-20 steps. When the air conditioner determines that the refrigerant is moderately leaked, the second opening degree of the needle valve is determined as 20-30 steps. When the air conditioner determines that the refrigerant is heavily leaked, the third opening degree of the needle valve is determined as 30-40 steps.

[0049] In combination Figure 4 As shown in the drawings, the disclosure also provides a control method for an air conditioner, comprising:

[0050] S21, the air conditioner obtains a refrigerant leakage degree of a refrigerant circulation loop.

[0051] S22, the air conditioner determines a target opening degree value corresponding to the refrigerant leakage degree according to the refrigerant leakage degree.

[0052] S23, the air conditioner runs in a refrigeration mode.

[0053] S24, the air conditioner controls the control valve to run at the target opening degree value, so that the liquid refrigerant is sucked into the refrigerant circulation loop through the pipeline.

[0054] By using the control method for an air conditioner provided by the disclosure, the air conditioner runs in the refrigeration mode before the control valve runs at the target opening degree value, so that the control valve sucks the refrigerant in the replenishing device into the refrigerant circulation loop in the refrigeration mode, which is beneficial to improving the efficiency of refrigerant replenishment on the basis of improving the accuracy of refrigerant replenishment.

[0055] Optionally, the air conditioner runs in the refrigeration mode, comprising:

[0056] controlling the compressor to run at an initial running frequency, and controlling the throttling element to run at an initial opening degree.

[0057] The initial running frequency represents an initial value of the running frequency of the compressor when it starts. The initial opening degree represents the minimum opening degree value of the throttling element in the running stage.

[0058] In this way, by controlling the compressor to run at the initial running frequency and the throttling element to run at the initial opening degree, the air conditioner has basic heat exchange capacity when it runs in the refrigeration mode. This avoids the situation that the refrigerant replenishment speed is too fast due to the high running frequency of the compressor and the large opening degree value of the throttling element, and is beneficial to controlling the suction rate of the refrigerant in the replenishing device.

[0059] It should be noted that the air conditioner runs in the refrigeration mode, and further comprises:

[0060] controlling the indoor fan and the outdoor fan to run at respective corresponding preset rotation speeds.

[0061] The preset rotating speed of the indoor fan can be any value during operation of the indoor fan. The preset rotating speed of the outdoor fan can be any value during operation of the outdoor fan.

[0062] In this way, the rotating speed values of the indoor and outdoor fans have certain influence on the heat exchange capacity of the refrigerant circulation loop. On the basis of controlling the compressor to operate at the initial operating frequency and controlling the throttling element to operate at the initial opening degree, the present embodiment further controls the indoor and outdoor fans to operate at respective corresponding preset rotating speeds, which is more conducive to realizing accurate control of the suction rate of the refrigerant in the replenishing device.

[0063] As an example, a certain model of a vertical air conditioner operates in a cooling mode, the compressor is controlled to operate at an initial operating frequency of 20 Hz, the indoor and outdoor fans are controlled to operate at respective corresponding preset rotating speeds of 700 revolutions per minute, and the throttling element is controlled to operate at an initial opening degree of 79 steps. The preset rotating speed of 700 revolutions per minute of the indoor fan represents the minimum rotating speed value of the indoor fan. The preset rotating speed of 700 revolutions per minute of the outdoor fan represents the minimum rotating speed value of the outdoor fan.

[0064] Optionally, in combination with Figure 5 As shown in the figure, the air conditioner obtains the refrigerant leakage degree of the refrigerant circulation loop, including:

[0065] S31, the air conditioner obtains the current working condition of the air conditioner and the current whole-machine current value.

[0066] S32, the air conditioner determines the refrigerant leakage degree according to the current working condition and the current whole-machine current value.

[0067] In this way, in the process of refrigerant leakage detection of the air conditioner, the current working condition and the current current value that can indirectly reflect the refrigerant leakage degree are used to judge the refrigerant leakage, without the need to increase hardware such as sensors related to the refrigerant pressure value. Therefore, the method reduces the hardware cost of refrigerant leakage self-detection while performing automatic detection of refrigerant leakage.

[0068] It should be noted that the whole-machine current value of the air conditioner during normal operation is different under different working conditions of the air conditioner. At the same time, under any working condition, if the refrigerant leaks, the current value of the whole-machine current value decreases. And the greater the absolute value of the difference between the whole-machine current value under this working condition and the whole-machine current value during normal operation of the air conditioner, the more serious the refrigerant leakage degree. Therefore, the present embodiment determines the refrigerant leakage degree according to the current working condition and the current current value, thereby accurately performing automatic detection of refrigerant leakage.

[0069] Optionally, in combination with Figure 6 As shown in the figure, the air conditioner determines the refrigerant leakage degree according to the current working condition and the current whole-machine current value, including:

[0070] S41, the air conditioner acquires an information table, the information table storing different preset working conditions and preset power values and preset whole machine current values corresponding to the preset working conditions.

[0071] In this step, the preset power value represents the whole machine power value of the air conditioner. The preset current value represents the whole machine current value of the air conditioner. Since the whole machine power value of the air conditioner is different under different working conditions, and the whole machine current value is also different, the information table pre-stores different preset working conditions and preset power values and preset current values corresponding to the preset working conditions.

[0072] S42, the air conditioner matches the target power value and the target whole machine current value corresponding to the current working condition from the information table.

[0073] S43, the air conditioner acquires the current whole machine current value corresponding to the target power value of the air conditioner.

[0074] S44, the air conditioner determines the leakage degree of the refrigerant according to the matching condition of the current whole machine current value and the target whole machine current value.

[0075] In this way, first, the target power value under the current working condition can be accurately obtained by querying the information table. Then, the air conditioner is controlled to run at the target power value, and the corresponding current value is obtained. Finally, the leakage degree of the refrigerant is indirectly known according to the matching condition of the current current value and the target current value. Thus, the automatic detection of refrigerant leakage can be realized, and the intelligent detection capability of refrigerant leakage is improved.

[0076] Optionally, the air conditioner determines the leakage degree of the refrigerant according to the matching condition of the current current value and the target current value, comprising:

[0077] The air conditioner determines that the refrigerant is lightly leaked when the current current value is in a first preset range.

[0078] The air conditioner determines that the refrigerant is moderately leaked when the current current value is in a second preset range.

[0079] The air conditioner determines that the refrigerant is heavily leaked when the current current value is in a third preset range.

[0080] The air conditioner determines that the refrigerant is seriously leaked when the current current value is in a fourth preset range.

[0081] The first preset range represents [target current value x 80%, target current value x 90%]. The second preset range represents [target current value x 70%, target current value x 80%]. The third preset range represents [target current value x 50%, target current value x 70%]. The fourth preset range represents (0, target current value x 50%).

[0082] Thus, the greater the absolute value of the difference between the current value of the air conditioner and the current value of the air conditioner in normal operation, the more serious the refrigerant leakage, so the present embodiment can determine the degree of refrigerant leakage according to the matching of the current value with different preset ranges, thereby improving the accuracy of the refrigerant leakage self-check.

[0083] In combination with Figure 7 The present embodiment also provides a control method for an air conditioner, comprising:

[0084] S51, the air conditioner obtains the degree of refrigerant leakage of the refrigerant circulation loop.

[0085] S52, the air conditioner determines a target opening value corresponding to the degree of refrigerant leakage according to the degree of refrigerant leakage.

[0086] S53, the air conditioner controls the control valve to operate at the target opening value, so that the liquid refrigerant is sucked into the refrigerant circulation loop through the pipeline.

[0087] S54, the air conditioner re-obtains the degree of refrigerant leakage of the refrigerant circulation loop.

[0088] S55, the air conditioner controls the control valve to be closed in the case that the new degree of refrigerant leakage indicates that the refrigerant is sufficient.

[0089] The control method for an air conditioner provided by the present embodiment is adopted, the air conditioner re-obtains the degree of refrigerant leakage of the refrigerant circulation loop after controlling the liquid refrigerant to be sucked into the refrigerant circulation loop through management. And when it is determined that the refrigerant is sufficient, the control valve is controlled to be closed, which realizes intelligent control of refrigerant supply on the basis of improving the accuracy of refrigerant supply.

[0090] In combination with Figure 8 The present embodiment provides a control device for an air conditioner, comprising a processor 100 and a memory 101. Optionally, the device can also include a communication interface 102 and a bus 103. Wherein the processor 100, the communication interface 102, the memory 101 can complete the communication among each other through the bus 103. The communication interface 102 can be used for information transmission. The processor 100 can call the logical instructions in the memory 101 to execute the control method for an air conditioner of the above-mentioned embodiments.

[0091] In addition, the logical instructions in the memory 101 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 101 can be used to store software programs, computer executable programs, such as program instructions / modules corresponding to the method in the embodiments of the present disclosure. The processor 100 executes the function application and data processing by running the program instructions / modules stored in the memory 101, that is, implements the control method for the air conditioner in the above embodiments.

[0093] The memory 101 can include a program storage area and a data storage area. 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 101 can include a high-speed random access memory, and can also include a non-volatile memory.

[0094] The embodiments of the present disclosure provide an air conditioner comprising the above control device for the air conditioner.

[0095] The embodiments of the present disclosure provide a computer readable storage medium, which stores computer executable instructions, and the computer executable instructions are configured to execute the above control method for the air conditioner.

[0096] The embodiments of the present disclosure provide a computer program product, which comprises a computer program stored on a computer readable storage medium, and the computer program comprises program instructions. When the program instructions are executed by a computer, the computer executes the above control method for the air conditioner.

[0097] The above computer readable storage medium can be a transitory computer readable storage medium or a non-transitory computer readable storage medium.

[0098] The technical solutions of the embodiments 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 embodiments of the present disclosure. The above storage medium can be a non-transitory storage medium, including a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk, etc. various media that can store program codes, or a transitory storage medium.

[0099] 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.

[0100] 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.

[0101] 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 can be implemented only in a form of a logical function, and can be implemented by using a manner such as software (for example, application program) or the like. In some embodiments, a plurality of 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 coupling or direct coupling or indirect coupling between different units, or the coupling or direct coupling or indirect coupling between the displayed or discussed communication connections can be in a form of electrical, mechanical or other forms.

[0102] 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 containing 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 control method for an air conditioner, characterized by, The air conditioner is provided with a refrigerant circulation loop and a supply device containing liquid refrigerant, the refrigerant circulation loop is in communication with the supply device through a pipeline, the pipeline is provided with a control valve, and the method comprises: Obtaining the current working condition and the current whole-machine current value of the air conditioner; Obtaining an information table, which stores different preset working conditions, preset power values corresponding to each preset working condition, and preset whole-machine current values; Matching the corresponding target power value and target whole-machine current value under the current working condition from the information table; Obtaining the current whole-machine current value corresponding to the target power value when the air conditioner is running; According to the matching condition of the current whole-machine current value and the target whole-machine current value, the leakage degree of the refrigerant is determined; wherein the greater the absolute value of the difference between the current whole-machine current value under the preset working condition and the whole-machine current value when the air conditioner is running, the more serious the leakage degree of the refrigerant; According to the refrigerant leakage degree, a target opening value corresponding to the refrigerant leakage degree is determined; Controlling the control valve to run at the target opening value, so that the liquid refrigerant is sucked into the refrigerant circulation loop through the pipeline.

2. The method of claim 1, wherein, According to the refrigerant leakage degree, a target opening value corresponding to the refrigerant leakage degree is determined, comprising: In the case that the refrigerant leakage degree represents a slight refrigerant leakage, the target opening value is determined as a first opening; In the case that the refrigerant leakage degree represents a moderate refrigerant leakage, the target opening value is determined as a second opening; In the case that the refrigerant leakage degree represents a severe refrigerant leakage, the target opening value is determined as a third opening; Wherein, the third opening is greater than the second opening, and the second opening is greater than the first opening.

3. The method of claim 1, wherein, Before controlling the control valve to run at the target opening value, it further comprises: Running in refrigeration mode.

4. The method of claim 3, wherein, The refrigerant circulation loop is provided with a throttling element, and the running in refrigeration mode comprises: Controlling the compressor to run at an initial running frequency; Controlling the throttling element to run at an initial opening.

5. The method according to any one of claims 1 to 4, characterized in that, After controlling the control valve to run at the target opening value, it further comprises: Re-obtaining the refrigerant leakage degree of the refrigerant circulation loop; In the case that the new refrigerant leakage degree represents sufficient refrigerant, the control valve is controlled to be closed.

6. A control device for an air conditioner comprising a processor and a memory having stored program instructions, characterized in that, The processor is configured to execute the control method for the air conditioner as claimed in any one of claims 1 to 5 when running the program instructions.

7. An air conditioner characterized by comprising: The control device for the air conditioner as claimed in claim 6.

8. A storage medium storing program instructions, characterized in that, The program instructions execute the control method for the air conditioner as claimed in any one of claims 1 to 5 when running.

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